Journal articles: 'Thermal insulating materials'

1

Shah, Sagarkumar, Vinay Bhatt, Jinesh Shah, Manojkumar Sheladiya, and Pratik Kikani. "Study of Thermal Insulating Materials And Costing of Economic Thickness of Insulation." Indian Journal of Applied Research 3, no. 8 (October 1, 2011): 77–80. http://dx.doi.org/10.15373/2249555x/aug2013/79.

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Klinklow, Nattida, Sethayuth Padungkul, Supoj Kanthong, Somjate Patcharaphun, and Ratchatee Techapiesancharoenkij. "Development of a Kraft Paper Box Lined with Thermal-Insulating Materials by Utilizing Natural Wastes." Key Engineering Materials 545 (March 2013): 82–88. http://dx.doi.org/10.4028/www.scientific.net/kem.545.82.

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This research studied the feasibility of using natural fibers extracted from natural wastes as a thermal-insulating material lined in a Kraft paper box packaging. The natural fibers were extracted from natural waste of rice straws using NaOH solutions. The extracted fibers were then formed as a porous thermal-insulating pad by a spray lay-up method using natural rubbers as binders. The thermal conductivities, specific heat capacities and temperature-rise time of the natural fiber insulation and other thermal-insulating materials including polystyrene foam, a polyethylene foam, and a glass fiber insulation were studied and compared. The glass fiber insulation showed the highest thermal conductivity, while the thermal conductivities of the other studied insulating materials were found to be similar. Moreover, the polymeric and natural-fiber insulations show better temperature-rise resistance than the glass fiber insulation. The temperature rises for different insulating materials were estimated using the analytical analysis of heat transfer. The calculated temperature-rise times were compared with the empirical results; both results are in the same order of magnitude. Consequently, a Kraft paper box lined with natural-fiber pads was constructed and compared with a Kraft paper box (without insulation lining) and a polystyrene box of equal sizes. The boxes were packed with an equal amount of ice and left under room temperature for 24 hours. The results show that, after 24 hours, the temperatures inside the natural-fiber lined box and the polystyrene box were contained below 15 °C, while the temperature inside the Kraft paper box increase to room temperature only after 16 hours. The observation shows that a natural fiber pad can potentially be used as an alternative insulating material in packaging industries, which can enhance environmental-friendly packaging products.

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Voznyak, Orest, Yuriy Yurkevych, Iryna Sukholova, Oleksandr Dovbush, and Mariana Kasynets. "Thermally conductive cost of the heat-insulating materials." Theory and Building Practice 2020, no. 2 (November 20, 2020): 92–98. http://dx.doi.org/10.23939/jtbp2020.02.092.

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The article presents the results of theoretical research to achieve the maximum effect in determination of the economically feasible level of buildings thermal protection. It must be optimal both thermally and economically, an indicator of which there are the costs. Graphical and analytical dependences are given. The research results substantiate the maximum effect when different thermal insulating materials are used. The aim is to increase the efficiency of energy saving measures, reduce their cost by optimizing the cost of thermal energy and insulating materials, determining the optimization criteria and justification for choice the optimal insulating material and its thickness, and determining the optimal thermal resistance, identifying ways to improve energy efficiency and substantiation of the calculation method. One of the most common thermal renovation measures, namely insulation of external walls, is considered. An economic assessment has been conducted, which is an important factor in a certain energy-saving proposition. The solution of the problem is presented, which includes two stages. The result of the first stage is the selection of the optimal heat-insulating material. The second stage is a substantiation of economically expedient thickness of the heatinsulating material. The obtained results make it possible to increase the efficiency of energy saving in thermal renovation of buildings taking into account both energy and economic aspects. In this paper the results of mathematical provement of such factor importance as the thermally conductive cost of the heat-insulating material at their thickness optimization are presented. Determining for the establishment of the normative thermal resistance in the future is the ratio of the cost of thermal energy to the thermal conductivity of the insulating material.

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Zach, Jiri, Jitka Peterková, and Nikol Žižková. "Development of Materials Based on Flax for Thermal Insulation and Thermal Rehabilitation of Structures." Advanced Materials Research 688 (May 2013): 153–57. http://dx.doi.org/10.4028/www.scientific.net/amr.688.153.

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Thermal restoration of building constructions presents a complex of measures during renovation and life prolongation of buildings. It is a solution including restoration of bearing parts of the construction, solutions of moisture questions and the thermal insulation and new surface treatments of the construction. After application of the thermal insulation total energy intensity for heating and cooling is reduced and the thermal comfort inside insulated object is improved. Nowadays at application of thermal insulating systems a huge amount of insulants produced from non-renewable materials (EPS, PUR) is needed or the production of these is energy demanding (rock wool). Some of them, namely foam-plastic insulating materials are not compatible with original walling materials and after its application the diffusion flow is frequently limited in direction to exterior. The paper describes possibilities of production of insulants from flax waste and use of such insulating materials in the field of exterior heat insulating materials for existing objects.

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Seneta, A. A., and N. K. Manakova. "Thermal insulating materials on liquid glass binder." Transaction Kola Science Centre 12, no. 2-2021 (December 13, 2021): 226–33. http://dx.doi.org/10.37614/2307-5252.2021.2.5.046.

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The article discusses the possibility of creating new inorganic heat-insulating materials based on liquid glass binder and mineral fillers. Within the framework of the article, the influence of various additives such as sawdust, chalk, coal and graphite on the physical and technical properties of an inorganic heat-insulating material is considered. The authors of the article proposed the compositions and conditions for obtaining materials that meet the regulatory requirements for materials and products for building thermal insulation

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Zach, Jiri, Jitka Peterková, Vít Petranek, Jana Kosíková, and Azra Korjenic. "Investigation of Thermal Insulation Materials Based on Easy Renewable Row Materials from Agriculture." Advanced Materials Research 335-336 (September 2011): 1412–17. http://dx.doi.org/10.4028/www.scientific.net/amr.335-336.1412.

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Production of building materials is mostly energy consuming. In the sphere of insulation materials we mostly see rock wool based materials or foam-plastic materials whose production process is demanding from material aspect and raw materials aspect as well. At present the demand for thermal insulation materials has been growing globally. The thermal insulation materials form integral part of all constructions in civil engineering. The materials mainly fulfill the thermal insulating functions and also the sound-insulating one. The majority of thermal insulation materials are able to fulfill both of the functions simultaneously. The paper describes questions of thermal insulation materials development with good sound properties based on natural fibres that represent a quickly renewable source of raw materials coming from agriculture. The main advantage of the materials are mainly the local availability and simple renewability of the raw materials. In addition an easy recycling of the materials after their service life end in the building construction and last but not least also the connection of human friendly properties of organic materials with advanced product manufacture qualities of modern insulation materials.

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Gomez, Ricardo S., Túlio R. N. Porto, Hortência L. F. Magalhães, Clotildes A. L. Guedes, Elisiane S. Lima, Dannyelle M. A. Wanderley, and Antonio G. B. Lima. "Transient Thermal Analysis in an Intermittent Ceramic Kiln with Thermal Insulation: A Theoretical Approach." Advances in Materials Science and Engineering 2020 (March 10, 2020): 1–15. http://dx.doi.org/10.1155/2020/6476723.

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Increasing the thermal efficiency of drying and firing processes of ceramic products plays an important role for industries that want to remain competitive in the market. Thus, this work aims to evaluate the influence of the type and thickness of thermal insulations, applied on the external sidewalls of an intermittent ceramic kiln, on heat transfer, temperature distribution in the insulating material, maximum external surface temperature, and energy gain, compared to the kiln without thermal insulation. All proposed mathematical formulations are based on the energy conservation, and mathematical procedures are implemented in Microsoft Excel software. Here, it was tested four types of thermal isolators: fiberglass, rockwool, calcium silicate, and ceramic fiber. Results indicate that the greater the thickness of the thermal insulation, the lower the maximum external surface temperature and the greater the energy gain when compared to the kiln without thermal insulation. In addition, fiberglass is the insulating material, among the four types analyzed, which provides greater energy gain and greater reduction in maximum external surface temperature.

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Yu, Xing, Liu Lei, Cao Chang, Fan Weidong, Yan Keju, and Cheng Zhongfu. "A Review of Research Status and Prospect of Vacuum Insulated Tubing Insulation System." E3S Web of Conferences 155 (2020): 01007. http://dx.doi.org/10.1051/e3sconf/202015501007.

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Vacuum heat insulating tubing is an important wellbore heat insulating facility for heavy oil thermal recovery at present. Its heat insulating performance directly affects the thermal recovery efficiency. The research on the heat insulating system of vacuum heat insulating tubing is of great significance to improve and improve the heat insulating performance and enhance the thermal recovery of heavy oil. This paper summarizes and analyses the current research status of vacuum insulated tubing insulation system. It elaborates the insulation structure, insulation materials, annular air charging and vacuum pumping, insulation coating and so on. It provides reference and reference for the future research of vacuum insulated tubing.

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9

Zheng, Chao, Dongfang Li, and Monica Ek. "Improving fire retardancy of cellulosic thermal insulating materials by coating with bio-based fire retardants." Nordic Pulp & Paper Research Journal 34, no. 1 (March 26, 2019): 96–106. http://dx.doi.org/10.1515/npprj-2018-0031.

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Abstract Sustainable thermal insulating materials produced from cellulosic fibers provide a viable alternative to plastic insulation foams. Industrially available, abundant, and inexpensive mechanical pulp fiber and recycled textile fiber provide potential raw materials to produce thermal insulating materials. To improve the fire retardancy of low-density thermal insulating materials produced from recycled cotton denim and mechanical pulp fibers, bio-based fire retardants, such as sulfonated kraft lignin, kraft lignin, and nanoclays, were coated onto sustainable insulating material surfaces to enhance their fire retardancy. Microfibrillated cellulose was used as a bio-based binder in the coating formula to disperse and bond the fire-retardant particles to the underlying thermal insulating materials. The flammability of the coated thermal insulating materials was tested using a single-flame source test and cone calorimetry. The results showed that sulfonated kraft lignin-coated cellulosic thermal insulating materials had a better fire retardancy compared with that for kraft lignin with a coating weight of 0.8 kg/m2. Nanoclay-coated samples had the best fire retardancy and did not ignite under a heat flux of 25 kW/m2, as shown by cone calorimetry and single-flame source tests, respectively. These cost-efficient and bio-based fire retardants have broad applications for improving fire retardancy of sustainable thermal insulating materials.

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Krashchenko, Vladislav, Nikita Tretyakov, Alexander Chernov, Ilmir Shaykhalov, and Alexey Zhukov. "Modeling and thermal calculation of a pipeline insulation system." E3S Web of Conferences 164 (2020): 14021. http://dx.doi.org/10.1051/e3sconf/202016414021.

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Energy efficiency of heating networks depends on the costs of the manufacture of insulation materials and components, its installation and exploitation of insulating jacket. As insulation materials for insulation of heating networks, products based on rock wool, polyurethane foam extruded polystyrene foam, foam rubber and polyethylene foam. In this contribution introduced basic principles of calculating the thickness of the thermal insulation of a pipeline by the value of the standard density of the heat flow are given using an example of the use of products based on polyethylene foam. Calculation of the heat flux from the surface of the heat-insulating structure is carried out at a given thickness of the heat-insulating layer if there is a need to determine heat loss (or cold loss). The basis for the calculation is a mathematical model of heat transfer, a developed calculation algorithm and a computer program. The method of installation of thermal insulation depends on the diameter of the pipeline and the selected type of product. Insulating cylinders or cylinders in combination with heat-insulating mats are used for pipelines of small diameters. Roll materials are used to isolate large diameters. Products are fixed on pipelines using mechanical fasteners.

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Spodyniuk, N., I. Sukholova, and O. Dovbush. "Thermally conductive cost of the heat-insulating materials." Energy and automation, no. 5(51) (October 28, 2020): 98–109. http://dx.doi.org/10.31548/energiya2020.05.098.

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The article presents the results of theoretical research to achieve the maximum effect in determination of the economically feasible level of buildings thermal protection. It must be optimal both thermally and economically, an indicator of which there are the costs. Graphical and analytical dependences are given. The research results substantiate the maximum effect when different thermal insulating materials are used. The aim is to increase the efficiency of energy saving measures, reduce their cost by optimizing the cost of thermal energy and insulating materials, determining the optimization criteria and justification for choice the optimal insulating material and its thickness, and determining the optimal thermal resistance, identifying ways to improve energy efficiency and substantiation of the calculation method. One of the most common thermal renovation measures, namely insulation of external walls, is considered. An economic assessment has been conducted, which is an important factor in a certain energy-saving proposition. The solution of the problem is presented, which includes two stages. The result of the first stage is the selection of the optimal heat-insulating material. The second stage is a substantiation of economically expedient thickness of the heat-insulating material. The obtained results make it possible to increase the efficiency of energy saving in thermal renovation of buildings taking into account both energy and economic aspects. In this paper the results of mathematical provement of such factor importance as the thermally conductive cost of the heat-insulating material at their thickness optimization are presented.

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12

Feng, Xiao Ping, Chun Ting Li, and Jun Jie Wu. "Thermal Simulation Analysis of Insulation of the New Heat-Insulation Bricks." Applied Mechanics and Materials 584-586 (July 2014): 1536–40. http://dx.doi.org/10.4028/www.scientific.net/amm.584-586.1536.

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Using the ANSYS thermal analysis module to do steady thermal analysis of given heat-insulating bricks. The results show that this kind of bricks can achieve better insulation in both sides; when the thermal conductivity of the heat insulating material in the hole space are less than 0.3 W/(m·K), the bricks can obtain the good insulation effect; the smaller the heat conductivity coefficients of the bricks materials and filling materials are, the better insulation bricks can achieve.

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Valachova, Denisa, Nada Zdrazilova, Vladan Panovec, and Iveta Skotnicova. "Using of Aerogel to Improve Thermal Insulating Properties of Windows." Civil and Environmental Engineering 14, no. 1 (June 1, 2018): 2–11. http://dx.doi.org/10.2478/cee-2018-0001.

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AbstractFor the best possible thermal-technical properties of building structures it is necessary to use materials with very low thermal conductivity. Due to the increasing thermal-technical requirements for building structures, the insulating materials are developed. One of the modern thermal insulating materials is so-called aerogel. Unfortunately, this material is not used in the field of external thermal insulation composite systems because of its price and its properties. The aim of this paper is to present possibilities of using this insulating material in the civil engineering - specifically a usage of aerogel in the production of windows.

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Boulaoued, I., F. Khemili, and A. Mhimid. "THERMAL CHARACTERIZATION OF INSULATING MATERIALS." International Journal of Heat and Technology 30, no. 02 (December 31, 2012): 63–68. http://dx.doi.org/10.18280/ijht.300209.

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15

Ricciu, Roberto, Luigi A. Besalduch, Alessandra Galatioto, and Giuseppina Ciulla. "Thermal characterization of insulating materials." Renewable and Sustainable Energy Reviews 82 (February 2018): 1765–73. http://dx.doi.org/10.1016/j.rser.2017.06.057.

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Sedlmajer, Martin, Jiri Zach, and Jitka Hroudova. "Possibilities of Development of Thermal Insulating Materials Based on Waste Textile Fibers." Advanced Materials Research 1124 (September 2015): 183–88. http://dx.doi.org/10.4028/www.scientific.net/amr.1124.183.

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The paper describes the possibility of using textile fibers (natural and synthetic) for the production of thermal insulation materials in the form of mats using in construction. The paper deals mainly with soft thermal insulation mats and the factors that affect the thermal insulation properties of the insulating material in its manufacture and subsequent incorporation into the structure.

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Yakovchuk, R., A. Kuzyk, O. Miller, and A. Lyn. "HEAT INSULATION-APPARATUS SYSTEMS OF HOUSEHOLD FACADE AS A FACTOR OF INCREASED FIRE HAZARD." Fire Safety, no. 32 (August 14, 2018): 80–89. http://dx.doi.org/10.32447/20786662.32.2018.12.

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The paper analyzes the problems associated with the fire hazard of the application of thermal insulation and finishing systems of facades of buildings, which directly depends on the design solution of the thermal insulation system and the type of thermal insulation material. The generalized requirements for physical and technical indicators of the quality of heat-insulating materials; the possibility of applying facade heat insulation structures depending on their class, the height of the houses and the combustibility of the materials of the heat-insulating and finishing layers; fire-technical characteristics of expanded polystyrene are considered. The threats of fire spreading by thermal insulation systems of facades are analyzed and possible ways of its propagation between floors are considered. It is concluded that the use of combustible thermal insulating materials poses an increased danger to life and health of people during a fire. The problem of ensuring the fire safety of buildings, in which the insulation and finishing systems of exterior walls are used, depends on a number of factors and requires a more thorough study.

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Lohtander, Tia, Reima Herrala, Päivi Laaksonen, Sami Franssila, and Monika Österberg. "Lightweight lignocellulosic foams for thermal insulation." Cellulose 29, no. 3 (January 6, 2022): 1855–71. http://dx.doi.org/10.1007/s10570-021-04385-6.

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AbstractFoams are mainly composed of dispersed gas trapped in a liquid or solid phase making them lightweight and thermally insulating materials. Additionally, they are applicable for large surfaces, which makes them attractive for thermal insulation. State-of-the-art thermally insulating foams are made of synthetic polymeric materials such as polystyrene. This work focuses on generating foam from surfactants and renewable lignocellulosic materials for thermally insulating stealth material. The effect of two surfactants (sodium dodecyl sulphate (SDS) and polysorbate (T80)), two cellulosic materials (bleached pulp and nanocellulose), and lignin on the foaming and stability of foam was investigated using experimental design and response surface methodology. The volume-optimized foams determined using experimental design were further studied with optical microscopy and infrared imaging. The results of experimental design, bubble structure of foams, and observations of their thermal conductivity showed that bleached pulp foam made using SDS as surfactant produced the highest foam volume, best stability, and good thermal insulation. Lignin did not improve the foaming or thermal insulation properties of the foam, but it was found to improve the structural stability of foam and brought natural brown color to the foam. Both wet and dry lignocellulosic foams provided thermal insulation comparable to dry polystyrene foam. Graphical abstract

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Noriega Morales, S., A. Valles Chávez, V. Torres-Argüelles, M. Castillo Venegas, A. H. Gómez, D. Alaniz-Lumbreras, and V. Castaño Meneses. "Cost-effective thermal-insulating building materials." Materiali in tehnologije 54, no. 4 (July 22, 2020): 439–45. http://dx.doi.org/10.17222/mit.2019.100.

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Hroudová, Jitka, and Jiri Zach. "Development and Study of the Possibilities to Use Natural Materials for Thermal-Insulation Systems of ETICS." Advanced Materials Research 587 (November 2012): 31–35. http://dx.doi.org/10.4028/www.scientific.net/amr.587.31.

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Thermal insulation systems of ETICS are now mostly solved in the building industry, whether in terms of insulating the structures, choices of materials and subsequent recycling after the end of their life period. From the environmental point of view and also in the perspective of sustainable development, it is essential to look for other suitable material bases which relate only to easily renewable sources of raw materials or to industrial wastes which have long been available in sufficient quantity and quality. It is important that production of the insulation systems is energetically efficient modest in terms of manufacturing facilities. The aim of this paper is to verify the possibility of using natural insulation materials for thermal insulation systems ETICS. This paper describes the results of studies of key properties of insulations based on industrial hemp and flax and the results of computational simulations of the behavior of these insulations incorporated in the real systems ETICS.

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Zach, Jiří, Jitka Hroudová, Jiří Brožovský, Zdeněk Krejza, and Albinas Gailius. "Development of Thermal Insulating Materials on Natural Base for Thermal Insulation Systems." Procedia Engineering 57 (2013): 1288–94. http://dx.doi.org/10.1016/j.proeng.2013.04.162.

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Cerkez, Idris, Hasan B. Kocer, and Roy M. Broughton. "A Practical Cost Model for Selecting Nonwoven Insulation Materials." Journal of Engineered Fibers and Fabrics 7, no. 1 (March 2012): 155892501200700. http://dx.doi.org/10.1177/155892501200700101.

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Elementary heat transfer in the range of density, thickness, and temperature normally used for house insulation, has been described experimentally for nonwoven structures. A model relating cost, density, and thermal efficiency of nonwoven insulating materials has been developed to aid in insulation materials selection and optimization of cost. Intrinsic to this system are material specific thermal conductivity slope coefficients readily derived from thermal conductivity versus specific volume plots.

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Kumar, Ashok, Rajesh Deoliya, and P. S. Chani. "Insulating Materials for Energy Saving in Buildings." Key Engineering Materials 632 (November 2014): 1–14. http://dx.doi.org/10.4028/www.scientific.net/kem.632.1.

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Insulation is considered one of the effective solutions to achieve energy savings in buidings. Better insulation having low thermal conductivity contributes significantly to new construction and retrofitting existing buildings. The Energy Conservation Building Code and National Building Code of India define the prescriptive and mandatory requirements for the U-factor and R-values for different climates but the way to achieve these values is left to the designers. As none of the walling and roofing assemblies in buildings fulfill the criteria for overall thermal transmittance, the study deals with determining the thermal conductivity of sustainable walling materials and prefab roofing technologies as well as insulating materials using Guarded Hot-Plate Apparatus. The MATLAB program is developed for computing the U-values and for predicting the desired retrofit insulation thicknesses to make different materials and roofing assembly combinations comply the Code requirements in different climatic regions of India. The results of the study are used for computing the performance with and without insulation using DesgnBuilder software for improving energy efficinecy of the buildings in composite climate in India.

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Hroudová, Jitka, Jiri Zach, Rudolf Hela, and Azra Korjenic. "Advanced, Thermal Insulation Materials Suitable for Insulation and Repair of Buildings." Advanced Materials Research 688 (May 2013): 54–59. http://dx.doi.org/10.4028/www.scientific.net/amr.688.54.

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The need of quality materials for thermal insulation and restoration of building constructions is without question an up-to-date subject. Considering the growing trend in the field of reduction of building construction energy intensity and reduction of CO2 production a general assumption at development of new thermal insulating plasters is the reduction of thermal conductivity and also reduction of density in mature conditions which results in general saving of raw materials necessary for production of 1m3 of applied plaster. Aim of the paper is to acquaint readers with results of research and development of "advanced" thermal insulating plasters obtained within the cooperation of Brno Technology University and Vienna Technical University. Main object of research works was a development of plasters that would show a very good ratio of thermal insulating and mechanical properties, low density, high durability and resistance to humidity and salt influences mainly in case of its possible applications within reconstructions of existing building objects with higher moisture content.

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Lakatos, Akos. "Comparison of the Thermal Properties of Different Insulating Materials." Advanced Materials Research 899 (February 2014): 381–86. http://dx.doi.org/10.4028/www.scientific.net/amr.899.381.

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Currently thermal insulating of the buildings is sorely needed from the point of view of energy as well as money savings. It is important to highlight that the most commonly used insulation materials in the building sector are the expanded polystyrene (EPS), the extruded polystyrene (XPS) and the fibrous (mineral, rock) ones. In this communication we confront 6 different insulating materials slabs (EPS 30, 100, 150, 200, a yellow XPS and a mineral wool by their thermal properties. Therefore two types of hypothetic building structures were created and they were insulated with the above presented materials from 0.01 m to 0.3 m thicknesses. For the calculations the thermal conductivity of each sample was determined using a Holometrix 2000 (HLS) heat flow meter. As a result their heat transfer coefficients, delaying abilities, energy storing capabilities and thermal diffusion coefficients were confronted. Besides a material constant had been defined and was paired with the measured thermal conductivity.

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Petranek, Vít, Sergii Guzii, Pavel Krivenko, Konstantinos Sotiriadis, and Jan Maňák. "Use of Thermal Insulating Perlite Composite Materials Based on Geocement to Protect Technological Equipment." Advanced Materials Research 860-863 (December 2013): 1342–45. http://dx.doi.org/10.4028/www.scientific.net/amr.860-863.1342.

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Two different thermal insulating materials based on geocement (formulated as Na2OAl2O36SiO220H2O) were produced as possible environmentally friendly materials, to substitute existing thermal insulation of technological equipment. Expanded perlite was added as filler during the mixing process. The two thermal insulating perlite composite materials were produced in the form of two-component mixture with a ratio of liquid phase (geocement dispersion) to solid phase (perlite) of 3:1.8 and 3:1.0. The developed materials are characterized by: compressive strength of 0.11-0.14 MPa; average density of 296-320 kg/m3; thermal conductivity coefficient of 0.068-0.078 W/mK; adhesion on metal surface of 1.15-1.32 MPa. The measured temperatures on the thermal insulation coatings of technological equipment confirm the effectiveness of the materials developed. These materials, having a thickness not exceeding 3.5 cm, are recommended for application to technological equipment of complex geometric shape at an operating temperature until 1073 K.

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Lakatos, Á., I. Deák, and U. Berardi. "Thermal characterization of different graphite polystyrene." International Review of Applied Sciences and Engineering 9, no. 2 (December 2018): 163–68. http://dx.doi.org/10.1556/1848.2018.9.2.12.

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The development of high performance insulating materials incorporating nanotechnologies has enabled considerable decrease in the effective thermal conductivity. Besides the use of conventional insulating materials, such as mineral fibers, the adoption of new nano-technological materials such as aerogel, vacuum insulation panels, graphite expanded polystyrene, is growing. In order to reduce the thermal conductivity of polystyrene insulation materials, during the manufacturing, nano/micro-sized graphite particles are added to the melt of the polystyrene grains. The mixing of graphite flakes into the polystyrene mould further reduces the lambda value, since graphite parts significantly reflect the radiant part of the thermal energy. In this study, laboratory tests carried out on graphite insulation materials are presented. Firstly, thermal conductivity results are described, and then sorption kinetic curves at high moisture content levels are shown. The moisture up-taking behaviour of the materials was investigated with a climatic chamber where the relative humidity was 90% at 293 K temperature. Finally, calorific values of the samples are presented after combusting in a bomb calorimeter.

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Bruyako, Mihail Gerasimovich, Larisa Grigorieva, and Evgeniya Viktorovna Sokoreva. "Influence of Reactive Organic Flame Retardants on Properties of Resol Phenoplast Foams." Advanced Materials Research 1025-1026 (September 2014): 451–54. http://dx.doi.org/10.4028/www.scientific.net/amr.1025-1026.451.

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Found that Organophosphorus Compounds Reduce the Flammability of Resol Phenoplast Foams. Quality Improves Thermal Insulation Materials, the Use of such Phenolicfoam. Analysis of Using the Heat-Insulating Materialsindicates that Heat Insulation Made with Filling Phenol Foam Plastics Havinglow Heat-Conductivity and Relatively Low Cost of Raw Materials is Superior Bytheir Technical and Economic Performance to Mineral and other Polymericheat-Insulating Materials. Meanwhile, Relatively Low Strength and Smolderingpropensity of Resole Foam Phenol Plastics, as well as Excessive Fumes Duringthe Production Process of Heat-Insulating Materials on their Base, Containwider Usage of Phenol Foam Plastics in Building.

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Meleshenko, V. N., V. G. Ogon’kov, A. V. Chirikov, S. V. Serebryannikov, S. S. Serebryannikov, and A. P. Cherkasov. "The thermal conductivity of electrical-insulating materials and insulation systems." Russian Electrical Engineering 88, no. 9 (September 2017): 609–14. http://dx.doi.org/10.3103/s1068371217090103.

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Bobrova, Ekaterina, Anton Pilipenko, and Alexey Zhukov. "Insulating sheath system and energy efficiency of buildings." E3S Web of Conferences 91 (2019): 02019. http://dx.doi.org/10.1051/e3sconf/20199102019.

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The article discusses the results of thermal imaging monitoring of building structures with and without insulation. Research and thermal and physical calculations showed that heat loss from the premises is determined by two groups of factors: surface loss depending on thermal conductivity, as well as vapor and air permeability of enclosing elements and heat loss at all types of joints, fasteners, etc. Thermal insulation with plate materials significantly reduces heat losses, but at the same time, heat flows through the joints between the heat-insulating plates and in the areas of their contact with other structures, necessitating the use of steam and waterproof windproof roll materials. The usage of elastic and thermoplastic materials in the insulation circuit allows minimizing heat loss at the joints between the heat-insulating elements and along the smooth surface of the wall due to the low air and vapor permeability of the material. In the systems of frame cottages, when used as a thermal insulation of rolled foam-polyethylene, it becomes possible to form a seamless insulating shell of a building. This is made possible by connecting individual sheets of polyethylene foam into a lock, followed by hot air welding. Seamless insulation systems are used both in the construction of cottages and in the construction of frame and frameless logistic facilities and housing and communal services.

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Cui, Yan Qiu, Yun Long Peng, and Cai Ling Luo. "Study on the Fire Protection Technologies for External Thermal Insulation System of the Buildings." Applied Mechanics and Materials 638-640 (September 2014): 1646–49. http://dx.doi.org/10.4028/www.scientific.net/amm.638-640.1646.

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EPS, XPS and PU plates etc. are often selected as the insulating layer in external thermal insulation system. Although featured by good thermal insulation properties and low costs, these materials are provided with major fire potential. Therefore, fireproof treatment methods for the thermal insulation materials and fireproof structural measure for the system are proposed in this paper based on the combustion tests on the thermal insulation materials, so as to increase the fire protection safety of the external thermal insulation system.

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32

Maslov, V. A. "Insulating materials of high thermal stability." Russian Electrical Engineering 85, no. 7 (July 2014): 460–63. http://dx.doi.org/10.3103/s1068371214070086.

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Zach, Jiri, and Jitka Peterková. "Study of Hygrothermal Behavior of Insulation Materials Based on Natural Fibers." Advanced Materials Research 1124 (September 2015): 97–102. http://dx.doi.org/10.4028/www.scientific.net/amr.1124.97.

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Natural fibre based thermal insulating materials belong to progressive building materials representing one of the possible ways in sustainable development and which are characterised with low carbon trace and low value of primary bound energy. In case of industrially produced insulating materials (for instance using thermal connection method) the insulating materials based on natural fibres showed comparable properties with industrially produced insulating materials on building markets. In the view of thermal insulating properties the natural insulating material show slightly different behavior in comparison with synthetic insulating materials which is caused by fibrous structure of insulating materials and low thermal conductivity of natural fibres (contrary to glass or mineral fibres). The paper describes results of research oriented on study of heat propagation within materials based on natural fibres originated from agriculture and stockbreeding.

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Zach, Jiri, Jitka Peterková, and Martin Sedlmajer. "Utilization of Alternative Insulation Materials for Thermal Insulating Ceramics Blocks Production." Advanced Materials Research 482-484 (February 2012): 1570–75. http://dx.doi.org/10.4028/www.scientific.net/amr.482-484.1570.

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There has been a substantional increase of atributes for building constructions in area of thermal protection in last decade. This was shown as increasing of requirements for materials and components intended for building of cover constructions as well. In case of shaped bricks used for perimeter walls advanced production technologies were applied. These technologies consist of decreasing thermal conductivity coefficient for brick clinker, of decreasing inner ribs thickness and in last years this concerns the technology of filling inner cavities of shaped bricks with thermal insulating materials as well. This paper describes possibilities of using alternative raw material sources (natural fibres originated in agriculture, separate textile waste, ....) as integrated insulating layers in contemporary ceramic shaped bricks with high usable qualities.

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Vėjelienė, Jolanta, and Albinas Gailius. "ANALYSIS OF THERMAL INSULATION FROM RENEWABLE RESOURCES." Engineering Structures and Technologies 2, no. 2 (June 30, 2010): 66–70. http://dx.doi.org/10.3846/skt.2010.09.

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One of the essential requirements for buildings is energy saving and heat retention. About 40% of the total energy consumed in the European Union is used for heating of buildings. Most of the energy consumed in buildings is used for heating during the cold period and cooling during the warm period. A significant part of energy can be saved due to suitable insulation of buildings. More efficient energy saving can be ensured by using heat-insulating materials produced from renewable resources. In Lithuania straw is often used for making thermal insulation obtained with a thermal conductivity of 0.040 W/(mK). Straw thermal conductivity under different conditions as well as possibilities to use it for producing heat-insulating materials are analysed in the work.

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Liu, S. W., J. K. Yu, L. Han, Z. Q. Li, and Z. G. Yan. "Thermal insulation performance analysis of nanoporous thermal insulating materials applied in torpedo ladle." Materials Research Innovations 18, sup2 (May 2014): S2–250—S2–254. http://dx.doi.org/10.1179/1432891714z.000000000404.

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Zach, Jiri, Rudolf Hela, Jitka Peterková, and Martin Sedlmajer. "Utilization of Lightweight Aggregate from Expanded Obsidian for Advanced Thermal Insulating Plasters Production." Advanced Materials Research 335-336 (September 2011): 1199–203. http://dx.doi.org/10.4028/www.scientific.net/amr.335-336.1199.

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The thermal insulating of new and existing buildings is of a key influence in reduction of their energetic demand factor resulting in reduction of emissions of gases, carbon particles and dust which directly improves the environment. At development of light thermal insulation plasters with very low thermal conductivity the foam-plastic matters or light porous aggregates are frequently used at present. The foam-plastic materials do not appear as convenient ones in view of the environment and sustainable development as well. In the given case the thermal insulation plasters based on light cellular aggregates appear as more suitable. However a majority of light aggregates (for example expanded perlite) do not show a good ratio of insulation and mechanical properties. The paper describes a design and development of thermal insulation plasters based on expanded obsidian that can be used for thermal insulating of building constructions and for moisture sanitation. Considering the applied type of aggregates the materials show better ratio of thermal insulation and mechanical properties while in practice the plasters can be used as a full- value alternative for classical thermal insulation systems.

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Jiang, Yewei, Song Xin, Hongyu Li, Long Zhang, Chuanbin Hou, Zhaopeng Zhang, and Jianghui Guo. "Performance of Heat-Insulating Materials Doped with Basalt Fibres for Use in Mines." Polymers 12, no. 9 (September 10, 2020): 2057. http://dx.doi.org/10.3390/polym12092057.

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To solve high-temperature-induced hazards in mines, heat-insulating materials were prepared by utilising basalt fibres and high-strength ceramsite combined with cementing materials. Through orthogonal tests and data analyses, the optimal combination of the heat-insulating materials doped with basalt fibres was determined as A1B1C1, that is, doping with 45% basalt fibres, a length of the basalt fibres of 6 mm, and doping with 20% ceramsite. The performance indices corresponding to the optimal comprehensive combination of the heat-insulating materials doped with basalt fibres included a density of 1200 kg/m3, thermal conductivity of 0.151 W/(mK), compressive strength of 9.7 MPa, flexural strength of 3.6 MPa, and a water-seepage depth of 25.4 mm. Numerical simulations verified that the materials presented favourable thermal insulation performance.

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Petrov, G. I., V. N. Kornienko, and A. G. Donetskikh. "Ensuring energy efficiency of refrigeration piping." Lizing (Leasing), no. 4 (October 1, 2021): 45–52. http://dx.doi.org/10.33920/vne-03-2110-07.

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Improving energy efficiency and energy saving in refrigeration technology depends largely on the use of modern thermal insulation materials in the thermal insulation structures of refrigeration pipelines. The article presents a comparative analysis of the thermal characteristics and operational properties of heat-insulating materials used in refrigeration. The features of RUFLEX thermal insulation materials based on foamed synthetic rubber produced from domestic raw materials and their compliance with the requirements of energy efficiency, durability, operational reliability and safety are considered.

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Yu, Yong Peng. "Development Strategy of Insulation Macromolecular Composite Materials." Advanced Materials Research 391-392 (December 2011): 328–31. http://dx.doi.org/10.4028/www.scientific.net/amr.391-392.328.

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The status and progress of high pressure resistant insulation material at home and abroad were reviewed from aspects like high thermal conductivity, high temperature resistance, environ-mental protection and modification of nano-particles. High thermal conductivity insulation materials can improve the efficiency of cooling system and decrease the energy loss of electric machines. Some famous foreign companies keep ahead in this field. Current domestic high temperature resistant solvent less insulating varnish can only be used in small and medium sized generators instead of high voltage generators. Therefore this kind of material should be improved in either resin rich or resin less insulation systems.

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Zach, Jiri, Jitka Peterková, Martin Sedlmajer, and Azra Korjenic. "Study of Heat Transfer Process in Structure of Thermal Insulating Materials Based on Natural Fibers." Advanced Materials Research 1000 (August 2014): 227–30. http://dx.doi.org/10.4028/www.scientific.net/amr.1000.227.

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Natural fibre based thermal insulating materials belong to progressive building materials representing one of the possible ways in sustainable development and which are characterised with low carbon trace and low value of primary bound energy. In case of industrially produced insulating materials (for instance using thermal connection method) the insulating materials based on natural fibres showed comparable properties with industrially produced insulating materials on building markets. In the view of thermal insulating properties the natural insulating material show slightly different behaviour in comparison with synthetic insulating materials which is caused by fibrous structure of insulating materials and low thermal conductivity of natural fibres (contrary to glass or mineral fibres). The paper describes results of research oriented on study of heat propagation within materials based on natural fibres originated from agriculture and stockbreeding.

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42

Brenek, A., V. Vaclavik, T. Dvorsky, and Vojtěch Šimíček. "Energy Remediation Combining Insulation Materials Based on Calcium Silicate and Expanded Polymers." Materials Science Forum 865 (August 2016): 196–200. http://dx.doi.org/10.4028/www.scientific.net/msf.865.196.

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Energy rehabilitation of buildings using airtight insulating materials based on expanded polystyrene is often accompanied by the formation of moisture problems in the enclosure wall footing. Moisture progress in the rehabilitated structure is simulated using modern moisture transient models in Delphin software. Combinations of the developed plate thermal insulating materials based on calcium silicate and the conventional thermal insulation panels based on expanded polymer have been designed to address the moisture problems. This article describes the function of this solution during the reconstruction of a house built from full clay bricks with malfunctioning waterproofing in the lower house construction.

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Karpov, Denis, Olga Dyudina, and Mikhail Pavlov. "A review on modern heat-insulating materials for improving the energy efficiency of buildings and life-support utilities." E3S Web of Conferences 288 (2021): 01099. http://dx.doi.org/10.1051/e3sconf/202128801099.

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The main heat engineering characteristics of modern traditional and innovative heat-insulating materials, their advantages, and application fields are considered. Particular attention is paid to liquidceramic heat-insulating materials - thermal paints, which are now actively used for thermal insulation of facades of capital and completed construction projects, engineering and technical life support systems, installations, and separate elements. Interest in the study of this group of building materials is explained by the widespread use of heaters to improve the energy efficiency of civil and industrial buildings, as well as engineering life support systems for various purposes.

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Plakhotnikov, Kyrylo, Dmitry Bondarenko, Elena Dedenyova, Medeia Saliia, and Tatiana Kostuk. "Heat-insulating materials in modern building industry." MATEC Web of Conferences 230 (2018): 02024. http://dx.doi.org/10.1051/matecconf/201823002024.

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The characteristic feature of the modern construction industry is the broad appliance of contemporary design and technology solutions, which require new constructive, water-proof, finishing and heat-insulating materials. Implementation of new energy saving norms for the residential sector and increasing requirements for thermal protection of buildings have sharpened an issue how to develop new thermal insulation materials. Although the thick-layered heat insulation is known for a while, the heat insulation made of thin layers requires additional studies. This group of constructive materials is relatively new; there is no equipment and techniques for studying that. The structure of these materials is composite, comprising hollow ceramic and glass microspheres and a binder substance. This combination lends the lightness to the material and makes it highly adhesive to a surface where it should be applied. After application to a surface, the microspheres create a multilayered combination, reflecting up to 80% of heat stream. It makes the premises more comfortable, cutting down the expenditures on heating in winter, and summer air conditioning as well.

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Petrov, G. I., N. S. Nikolaev, and V. N. Kornienko. "Modern materials for energy saving heat-insulating constructions of pipe-lines and heat exchange equipment." Meat Industry Journal, no. 10 (October 21, 2020): 46–50. http://dx.doi.org/10.37861/2618-8252-2020-10-46-50.

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Improvement of heat-insulating constructions is directly linked with the development of modern technological equipment due to an increase in its energy efficiency and energy saving during thermal treatment of meat and meat products. Thermotechnical characteristics and performance properties of protective coating materials of the trademark RU-FLEX intended for heat-insulating constructions of pipe-lines and equipment of meat industry enterprises were analyzed. Peculiarities of installation of thermal insulation RU-FLEX from foam rubber using different auxiliary materials to improve installation quality, stability to negative environmental effects and increase the service life were examined.

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Bozsaky, David. "Series of Experiments with Thermal Insulation Coatings Consisted of Vacuum-Hollow Nano-Ceramic Microspheres." Acta Technica Jaurinensis 11, no. 1 (February 14, 2018): 17–33. http://dx.doi.org/10.14513/actatechjaur.v11.n1.447.

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Because of the rigorous regulations in the 21st century it has become a serious task for designers to find more effective ways for thermal insulation. One of these options is the application of nanotechnology-based materials. Among nano-scale structured materials the most uncertainties are found about the thermal insulating quality of thermal insulation coatings consisted of vacuum-hollow nano-ceramic microspheres. Complete agreement had not been already found about the mechanism of their insulating effect. In order to explore and describe the thermodynamic process inside nano-ceramic coatings (NCC) 6 series of heat transfer resistance experiments were performed in 2014-2017. Several building structure configurations with 12 different orders of layers were tested with a standard heat flow meter. On basis of these results it could be concluded that in case of nano-structured materials convective heat transfer coefficient might be taken account in different way than in case of traditional macro-structured thermal insulation materials.

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Buahom, Piyapong, Chongda Wang, Mohammed Alshrah, Guilong Wang, Pengjian Gong, Minh-Phuong Tran, and Chul B. Park. "Wrong expectation of superinsulation behavior from largely-expanded nanocellular foams." Nanoscale 12, no. 24 (2020): 13064–85. http://dx.doi.org/10.1039/d0nr01927e.

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This work aims to predict the thermal conductivity of microcellular and nanocellular thermal insulation foams to explore the correlation between the cellular structure and the thermal insulating properties.

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Kosiński, Piotr, and Robert Wójcik. "An Impact of Air Permeability on Heat Transfer through Partitions Insulated with Loose Fiber Materials." Applied Mechanics and Materials 861 (December 2016): 190–97. http://dx.doi.org/10.4028/www.scientific.net/amm.861.190.

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The paper presents the problem of windwashing in partitions including air permeable thermal insulations. There are technical solutions, which deliberately accept the filtration of air in the insulating layer, guided by the necessity of possible drying of building materials. Some scientific papers even suggest that the air infiltration decrease the heat losses through ventilation. In result there occur heat losses in building heat balance which are underestimated and therefore difficult to take into account during calculations. Heat changes on the inner surface of the building partition occur with a delay to the initiation of the wind. However, even the short-term local wind speed loads on thermal insulations result in temperature decreasing and therefore possible condensation on the inner surface of the building partition. The article presents laboratory measurements of air permeability of loose mineral wool and laboratory investigation of the impact of air filtration on heat transfer in lightweight partitions filled with loose thermal insulation.

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Zach, Jiri, Vítězslav Novák, and Jitka Peterková. "Utilisation of Polyurethane (PUR) Granulate in Development of New Insulating Materials." Advanced Materials Research 1000 (August 2014): 133–36. http://dx.doi.org/10.4028/www.scientific.net/amr.1000.133.

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At present we can often see a development of new perspective materials using waste raw materials and not only in building industries. Still growing industrial waste amount together with not utilizable substances whose recycling is quite energy and finance demanding are the reasons. In addition it also brings a notable stress for the environment which further influences human health. The paper deals with a development of insulating materials based on waste PUR granulate generated as waste during PUR foam panel shaping. The aim was to develop insulating materials with good thermal insulation and eventually acoustic properties as suitable alternatives to present commonly used insulation materials in the market. Cement and subsequently PUR foams were selected as binders for waste granulate. Utilization of secondary raw materials in order to get new insulating materials with high added value is contribution of such a development.

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Luneng, Raymond, Søren N. Bertel, Jørgen Mikkelsen, Arne Petter Ratvik, and Tor Grande. "Chemical Durability of Thermal Insulating Materials in Hall-Héroult Electrolysis Cells." Ceramics 2, no. 3 (July 8, 2019): 441–59. http://dx.doi.org/10.3390/ceramics2030034.

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The most common thermal insulating materials used in the cathode lining in aluminum electrolysis cells are Moler (diatomaceous earth), calcium silicate, or vermiculite based materials. The thermal insulation layer is critical for the overall thermal stability of the cell and is vulnerable to volatile species, such as sodium vapor, that may penetrate through the carbon cathode and refractory layer. Here, we present an investigation of the chemical degradation of typical thermal insulating materials by exposure to sodium vapor in a laboratory test. Changes in microstructure and chemical and mineralogical composition of the exposed materials were characterized by electronic microscopy and powder X-ray diffraction. The materials possess different reaction patterns, ranging from deformation by creep to formation of a glassy layer reducing further sodium penetration. The results from the laboratory test were compared with chemical reactions with sodium predicted by computational thermodynamics and discussed with respect to relevant ternary phase diagrams.

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Journal articles on the topic 'Thermal insulating materials'

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