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Journal articles on the topic 'Epoxy polymer'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Ismail, Ahmad Safwan, Mohammad Jawaid, Norul Hisham Hamid, Ridwan Yahaya, and Azman Hassan. "Mechanical and Morphological Properties of Bio-Phenolic/Epoxy Polymer Blends." Molecules 26, no. 4 (2021): 773. http://dx.doi.org/10.3390/molecules26040773.

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Polymer blends is a well-established and suitable method to produced new polymeric materials as compared to synthesis of a new polymer. The combination of two different types of polymers will produce a new and unique material, which has the attribute of both polymers. The aim of this work is to analyze mechanical and morphological properties of bio-phenolic/epoxy polymer blends to find the best formulation for future study. Bio-phenolic/epoxy polymer blends were fabricated using the hand lay-up method at different loading of bio-phenolic (5 wt%, 10 wt%, 15 wt%, 20 wt%, and 25 wt%) in the epoxy

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2

Kashytskyi, V. P., O. L. Sadova, M. D. Melnychuk, G. I. Golodyuk, and O. B. Klymovets. "Structuring of Modified Epoxy Composite Materials by Infrared Spectroscopy." Journal of Engineering Sciences 10, no. 1 (2023): C9—C16. http://dx.doi.org/10.21272/jes.2023.10(1).c2.

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A comparative evaluation of the structuring processes of the epoxy polymer system with epoxy polymers modified with polyvinyl chloride solution and epoxy composites filled with finely dispersed titanium oxide powder was carried out. Analysis of the infrared (IR) absorption spectra of the studied epoxy polymer and epoxy composite materials showed the presence of deformation and valence vibrations of certain groups of atoms. The oscillations of groups of atoms with double bonds and regions of existence of triple bonds were also revealed. In the region of high frequencies, absorption bands corres

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3

Deng, Hua, Jun Peng Gao, Xue Feng An, and Xiao Su Yi. "Tailoring of Thermal Transition Temperature and Toughening of Shape Memory Epoxy Polymer." Applied Mechanics and Materials 182-183 (June 2012): 93–98. http://dx.doi.org/10.4028/www.scientific.net/amm.182-183.93.

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Shape memory epoxy polymer (SMEP-1) was modified by introducing ﬂexible epoxy into existing resin system. The thermal transition temperature (Ttrans) of shape memory polymer was tailored from 100°C to 76°C with the increase of the weight fraction of the flexible epoxy. The toughness of the polymer was also measured at the same time. The results show that the toughness of the polymer was improved especially at ultralow temperature. The addition of the flexible epoxy didn’t affect the excellent shape memory properties of the polymers.

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4

Zhao, Li Min, Xue Feng, Xu Jun Mi, Yan Feng Li, Hao Feng Xie, and Xiang Qian Yin. "Effect of C12-14 Alcohols on the Thermomechanical Properties of Epoxy Shape-Memory Polymer." Materials Science Forum 787 (April 2014): 275–80. http://dx.doi.org/10.4028/www.scientific.net/msf.787.275.

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A critical parameter for a shape memory polymer (SMP) lies in its shape memory transition temperature. For an amorphous SMP polymer, it is highly desirable to develop methods to tailor its Tg, which corresponds to its shape memory transition temperature. Starting with an amine cured aromatic epoxy system, epoxy polymers were synthesized by introducing flexible aliphatic alcohol. The thermal and thermomechanical properties of these epoxy polymers were characterized by differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA). All the crosslinked epoxy polymers with Tg’s abov

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5

Saikia, Monmi, Trisha Dutta, Niteen Jadhav, and Deep J. Kalita. "Insights into the Development of Corrosion Protection Coatings." Polymers 17, no. 11 (2025): 1548. https://doi.org/10.3390/polym17111548.

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This review article focuses on providing an accumulated knowledge on state-of-the-art composite polymer coating technologies that are studied for corrosion protection. A specific focus has been given to epoxy resin-based composite systems, considering their wide use due to remarkable chemical resistance, excellent adhesion to substrate, thermal stability, and mechanical strength. The addition of various functional polymers to the epoxy matrix has spurred significant advancements in the prevention of corrosion. Light has been shed on the epoxy resin composite systems that are produced by blendi

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6

Sindu, B. S., and Saptarshi Sasmal. "Atomistic to continuum scale investigations on mechanical properties of epoxy bonded fiber reinforced polymer composite systems under hygro-thermal exposures." Modelling and Simulation in Materials Science and Engineering 30, no. 3 (2022): 035012. http://dx.doi.org/10.1088/1361-651x/ac5565.

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Abstract Epoxy polymers are widely used as adhesives in bonded composite systems. In this study, multi-scale computational investigations from molecular dynamics (MD) to finite element (FE) simulations are carried out to understand the material behaviour at atomistic level and to evaluate the performance at macro level. MD investigations are carried out to understand the extent of degradation of mechanical (such as strength, modulus) and transport properties (such as moisture diffusion coefficient) due to different environmental conditions like moisture ingress and high temperature. The influe

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7

Matsiura, Milana, Vira Savchenko, Oleksandr Petrashov, Valentyna Povzlo, and Oleksii Voskoboinik. "MODERN APPROACHES TO ENHANCING THE EFFICIENCY OF EPOXY-BASED ANTICORROSION COATINGS." New Materials and Technologies in Metallurgy and Mechanical Engineering, no. 2 (June 16, 2025): 15–21. https://doi.org/10.15588/1607-6885-2025-2-2.

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Purpose. To summarize and critically analyze published scientific data on the modification of epoxy polymer-based coatings in order to improve their anticorrosive properties. Research methods. The selection of literature sources was carried out using the bibliographic databases Google Scholar and Scopus. The keywords used for the search included: “epoxy resins”, “epoxy polymers”, “epoxy coatings”, “anticorrosion effect/activity”, and “corrosion inhibitors” in both Ukrainian and English. Results. A critical analysis of 22 published papers on modern approaches to improving the performance of epo

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8

Mukhiddinov, Bakhodir, Sardor Samadov, Soyibjon Negmatov, Lola Tilavova, and Dilshod Akhtamov. "Investigation of the kinetics of heat treatment of epoxy polymers." E3S Web of Conferences 525 (2024): 02019. http://dx.doi.org/10.1051/e3sconf/202452502019.

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The study examines the effect of the concentration of modifiers (BDI) on the annihilation characteristics of cured epoxy polymers using the positron annihilation method. The results show that both the concentration and size of microcavity defects decrease, which can be explained by the formation of densely sewn areas due to the production of additional bridges. The supramolecular structure of the formed epoxy polymer is discussed, with the identification of several distinct areas, including polymer globules formed by stacking chains of simple polyester macromolecules around polymerization cent

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9

Mihu, Georgel, Sebastian-Marian Draghici, Vasile Bria, Adrian Circiumaru, and Iulian-Gabriel Birsan. "Mechanical Properties of Some Epoxy-PMMA Blends." Materiale Plastice 58, no. 2 (2021): 220–28. http://dx.doi.org/10.37358/mp.21.2.5494.

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The thermoset polymers and the thermoplastic polymers matrix composites require different forming techniques due to the different properties of two classes of polymers. While the forming technique for thermoset polymer matrix composites does not require the use of special equipment, the thermoplastic polymer matrix composites imposes the rigorous control of temperature and pressure values. Each type of polymer transfers to the composite a set of properties that may be required for a certain application. It is difficult to design a composite with commonly brittle thermoset polymer matrix showin

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10

Samoilenko, Tetiana, Nataliia Iarova, Halyna Menzheres, and Oleksandr Brovko. "The Sensitization of Aliphatic Epoxy Photopolymerization in Epoxy-Acrylate Interpenetrating Polymer Networks." French-Ukrainian Journal of Chemistry 2, no. 1 (2014): 5–9. http://dx.doi.org/10.17721/fujcv2i1p5-9.

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The paper discuses the phenomenon of the sensitization of the aliphatic epoxy photopolymerization in the presence of acrylate oligomers while forming epoxy-acrylate interpenetrating polymer networks. The photopolymerization process was studied by IR spectroscopy and the properties of the final products – by the Gardner test, crosshatch adhesion test, and the pencil hardness test. The epoxy groups conversion, which is rather low in aliphatic epoxy polymers, was found to alter with the increase of acrylate compounds content. The materials synthesized on the base of interpenetrating polymer netwo

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11

Kim, Tae Hee, Miri Kim, Wonjoo Lee, Hyeon-Gook Kim, Choong-Sun Lim, and Bongkuk Seo. "Synthesis and Characterization of a Polyurethane Phase Separated to Nano Size in an Epoxy Polymer." Coatings 9, no. 5 (2019): 319. http://dx.doi.org/10.3390/coatings9050319.

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Epoxy resins are widely applicable in the aircraft, automobile, coating, and adhesive industries because of their good chemical resistance and excellent mechanical and thermal properties. However, upon external impact, the crack propagation of epoxy polymers weakens the overall impact resistance of these materials. Therefore, many impact modifiers have been developed to reduce the brittleness of epoxy polymers. Polyurethanes, as impact modifiers, can improve the toughness of polymers. Although it is well known that polyurethanes (PUs) are phase-separated in the polymer matrix after curing, con

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Miroznicenco, Ana, Gabriel Saracu, Vasile Bria, Mihaela-Claudia Gorovei, and Adrian Circiumaru. "Mechanical Properties of PMMA and PLA Modified Epoxy Resins." Materiale Plastice 60, no. 4 (2024): 167–80. http://dx.doi.org/10.37358/mp.23.4.5696.

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Last years research in polymers registered an increase of interest regarding polymer mixtures aiming to obtain materials with properties of the mixed polymers. In this respect many studies are pointing the mixtures between a thermoset polymer and a thermoplastic polymer. It is known the fact that thermoplastic polymers are much more malleable than the thermoset ones and the goal is to obtain a mixture with the general properties of the thermoset polymer and with a machining ability proper to the thermoset polymer. The vitrimers are this type of polymers and, some of them, can be obtained by mi

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13

Kashytskyi, Vitalii, Petro Savchuk, Victoria Malets, Oksana Sadova, and Inna Boiarska. "Influence of Scale Factor on Structuring of Epoxy Polymer Products under the Action of Thermal Energy." Key Engineering Materials 864 (September 2020): 257–64. http://dx.doi.org/10.4028/www.scientific.net/kem.864.257.

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The structural features of epoxy polymer samples of different thicknesses under the influence of thermal energy are studied. The structure of fracture patterns of epoxy polymers, which are intensively structured in the thermal field, is investigated. The optimum temperature and duration of exposure are determined, which allows intensive production of products based on epoxy polymers with high physical and mechanical characteristics.

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14

Yu, Zhengwei, Zhenqing Wang, Hao Li, Jianxin Teng, and Lidan Xu. "Shape Memory Epoxy Polymer (SMEP) Composite Mechanical Properties Enhanced by Introducing Graphene Oxide (GO) into the Matrix." Materials 12, no. 7 (2019): 1107. http://dx.doi.org/10.3390/ma12071107.

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Shape memory epoxy polymer (SMEP) composite specimens with different graphene oxide (GO) contents were manufactured to study the effects of GO mass fractions on epoxy polymer composites. While ensuring the shape memory effect of SMEP, the addition of GO also remarkably strengthened the mechanical performance of the polymers. Analyses of the epoxy polymer composites’ thermal, mechanical, and shape memory performance were conducted through carrying out dynamic mechanical analysis (DMA), thermogravimetric analysis (TGA), and static tensile, three-point bending, impact, and shape memory tests. Mor

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15

Shaffer, O. L., V. Dimonie, M. S. El-Aasser, and J. W. Vanderhoff. "A Polymer Thin-Film Technique to Study Phase Separation." Proceedings, annual meeting, Electron Microscopy Society of America 43 (August 1985): 82–83. http://dx.doi.org/10.1017/s0424820100117480.

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There is a great deal of interest in the morphology of polymers. Polymer systems such as physical blends, copolymers and latexes of the core-shell type have become increasingly important in “designing properties”. of the final polymer. Phase separation examination is an excellent method of studying the morphology in these polymer systems.Normally phase separation in polymers has been studied by TEM. The standard sample preparation is to embed the solid polymer in epoxy and then microtome. Microtoming can create artifacts such as distortion due to the knife, cutting difficulty with a rubber pha

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16

Arif, Joksan, Hasti Riakara Husni, and Surya Sebayang. "Pengaruh Resin Epoksi Terhadap Mortar Polimer Ditinjau dari Kuat Tekan, Kuat Tarik Belah, Daya Serap Air dan Scanning Electron Microscope." Jurnal Rekayasa Sipil dan Desain 3, no. 3 (2016): 361–70. https://doi.org/10.23960/jrsdd.v3i3.469.

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Polymer mortar is a material formed through the process of building a composite concrete andbuilding polymers. Polymer mortar development efforts have been conducted in developedcountries. Until now the development of polymer mortar is still underway to reduce the use of thesemen, in order to anticipate the global warming. One of them is by using a polymer adhesivecement replacement material so produced a powerful mortal in a shorter time.On research was created mortal polymers without cement, fine aggregate and epoxy resin as thebinder of concrete. The composition of the raw materials of poly

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17

An, Changwei, Jun Zhang, and Xianqi Guan. "CO₂ Adsorption Based on Porphyrin Based Porous Organic Polymers." Journal of Physics: Conference Series 2463, no. 1 (2023): 012057. http://dx.doi.org/10.1088/1742-6596/2463/1/012057.

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Abstract In order to efficiently catalyze the cycloaddition reaction of CO2 and epoxy alkanes under mild environment and no catalyst, this paper designed and synthesized two kinds of porphyrin based porous organic polymers—porphyrin based porous organic polymer containing carboxyl group (ppop-cooh) and porphyrin based porous organic polymer containing quaternary ammonium salt ion pair. Quaternary ammonium salt cation anion pair nucleophilic groups and metal active centers were introduced into the polymer by pre- and post-modification respectively. The chemical structure and pore structure of t

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18

Bors, Adriana-Mariana, Marius-Eduard Lungulescu, Nicoleta Oana Nicula (Butoi), Alina-Ruxandra Caramitu, and Iosif Lingvay. "Ageing of Some Lacquers Due to Microbiological Stress." Materiale Plastice 56, no. 2 (2019): 330–36. http://dx.doi.org/10.37358/mp.19.2.5181.

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This paper shows the ageing study of some coatings and / or impregnation lacquers due to microbiological stress through fungal attack. Dielectric spectroscopy has shown that the dielectric losses of the investigated materials increase as result of microbiological ageing. The mean recorded increases are about 4 times for the alkyl-epoxy-melamine copolymer, 2 times for epoxy polymer and 1.5 times for urethane polymer in agreement with the mould coverage degree of about 20 %, 10 %, and 3 %, respectively. The fungal attack of the investigated polymers led to a decrease in volume resistivity of abo

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19

Pyshyev, Serhiy, Volodymyr Gunka, Yuriy Grytsenko, and Michael Bratychak. "Polymer Modified Bitumen: Review." Chemistry & Chemical Technology 10, no. 4s (2016): 631–36. http://dx.doi.org/10.23939/chcht10.04si.631.

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The main reasons and ways of bitumen modification by polymers were examined. Positive and negative aspects of the usage of different polymer modifiers (elastomers, thermoplastic elastomers, reactive polymers, thermoplastics) were analysed. The authors’ achievements concerning modification of bitumen by various polymers, namely indene-coumarone, petroleum, phenol-formaldehyde and epoxy resins, were described.

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20

Meng, Xiangli, Qing He, and Tetiana Hryhorenko. "Synthesis and Modifying Effect of Oligoesters with Reactive Groups Based on Epoxy Aliphatic Resin and Oligoester Dicarboxylic Acids." Polymers 17, no. 4 (2025): 433. https://doi.org/10.3390/polym17040433.

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The purpose of this research is to study the modifying effect of oligoesters with reactive groups based on epoxy aliphatic resin and oligoesters with dicarboxylic acids with different molecular weights (adipic, sebacic, and tetradecanedioic acids). Adducts of oligoesters with terminal epoxy groups and epoxy resin (ER) were prepared. The structures of the intermediates and modifiers were characterized by FTIR, 1H NMR, 13C NMR, TGA, DMA, and SEM. The single-phase structure of the modified polymers was confirmed using the DMA, TGA, and SEM methods. It was shown that for modified polymers, a patte

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21

Kuzema, P. O., D. L. Starokadomsky, O. O. Tkachenko, and V. A. Tertykh. "Reinforcement of epoxy polymers with hydride-silylated fumed silica." Himia, Fizika ta Tehnologia Poverhni 11, no. 4 (2020): 484–91. http://dx.doi.org/10.15407/hftp11.04.484.

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Fumed silica (FS) is widely used in numerous fields of application, the plastics industry being one of the most significance, where FS has proved to be successful as an efficient thickening, thixotropic, and anti-settling agent, as well as reinforcing filler. Chemical modification of silica surface enlarges its functional capabilities. In particular, silica with grafted silicon hydride groups was found to be active in the processes of hydrosilylation of alkene and alkyne bonds in monomers during their polymerization, resulting in the formation of reinforced polymeric composites. Recently, spec

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22

Hsieh, Tsung-Han, Ming-Yuan Shen, Yau-Shian Huang, Qi-Qian He, and Hsuan-Chih Chen. "Mechanical Properties of Glass Bead-Modified Polymer Composite." Polymers and Polymer Composites 26, no. 1 (2018): 35–44. http://dx.doi.org/10.1177/096739111802600105.

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This present work investigated the adhesive effect of the material properties and fracture toughness of a thermosetting epoxy polymer modified with micron-sized glass beads. Various surface treatments were used to modify the surfaces of the glass beads in order to consider the effect of the glass bead particle/epoxy adhesion on the material properties and toughness of the polymer-based composites. Adding glass beads into polymer resulted in an increase in the modulus. The maximum value of the modulus was obtained for the polymer composite modified with well-bonded glass beads. The addition of

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23

Tamagawa, Hirohisa. "Alteration of Thermal Characteristics of Polymer for the Purpose of Creating a Two-Stage Shape Memory Polymer." Advanced Materials Research 93-94 (January 2010): 304–11. http://dx.doi.org/10.4028/www.scientific.net/amr.93-94.304.

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A polymer fabricated by mixing PU soft segment and epoxy bore the thermal characteristics of the melting temperature, Tm, of PU soft segment and the glass transition temperature, Tg, of epoxy. The polymer fabricated even exhibited the shape memory effect at the Tg and Tm. Based on this observation, it was speculated that simply mixing two polymers bearing totally different thermal characteristics each other could result in a two-stage SMP, which could exhibit the shape memory effect at the two distinct temperatures. However, it was actually observed that the two-stage SMP was not always succes

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S. Hassan, Mohanad, Yasir K. Ibrahim, and Ismail I. Marhoon. "INVESTIGATION OF MECHANICAL CHARACTERISTICS OF (EPOXY-RESOLE BLEND) MATRIX HYBRID COMPOSITE." Journal of Engineering and Sustainable Development 26, no. 3 (2022): 27–32. http://dx.doi.org/10.31272/jeasd.26.3.4.

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This research aims to investigate the impact of fibre reinforcement on the mechanical properties of hybrid polymer matrix composites. The samples made of a hybrid polymer composite were made from the reaction of two polymers, 90% epoxy resin and 10% Resole resin, and were reinforced with two types of reinforcements. The reinforcement used for the current research was carbon and Kevlar fibers. The fibers were in plain weave and were added in volumetric fractions. This research assessed mechanical characteristics like tensile strength, hardness, and impact strength in two cases: one for epoxy/Re

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Nuraini, Lutviasari, Evi Triwulandari, Muhammad Ghozali, Muhammad Hanafi, and Jumina Jumina. "Synthesis of Polyurethane/Silica Modified Epoxy Polymer Based on 1,3-Propanediol for Coating Application." Indonesian Journal of Chemistry 17, no. 3 (2017): 477. http://dx.doi.org/10.22146/ijc.22321.

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Studies on the synthesis of polyurethane/silica modified epoxy polymer using 1,3-propanediol has been conducted. Synthesis of polymers made by reaction of tolonate and 1,3-propanediol (ratio NCO/OH=2.5) as the building blocks of polyurethane with diglycidyl ether bisphenol A (DGEBA) epoxy and catalyst dibutyltin dilaurate (DBTL).The total weight of the polyurethane used was 20% (w/w) of the total epoxy. Based on Fourier Transform Infrared (FTIR) and 1H-Nuclear Magnetic Resonance (1H-NMR) spectra indicated the existence of a new bond that is formed from the reaction of isocyanate group and hydr

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Bhattacharya, Swapan K., and Rao R. Tummala. "Epoxy Nanocomposite Capacitors for Application as MCM-L Compatible Integral Passives." Journal of Electronic Packaging 124, no. 1 (2001): 1–6. http://dx.doi.org/10.1115/1.1400751.

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Polymer/ceramic composite emerges as a novel material system for application as integral capacitors for the next generation of microelectronic industry where the discrete passive components such as capacitors, resistors, and inductors are likely to be replaced by the embedded components. In this study, epoxy based nanocomposites are selected due to their low-cost and low temperature processing advantages in comparison to the traditional polymers used in the microelectronic industry today. Other potential advantages of epoxy materials could be their aqueous based fabrication process and availab

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Koloor, S. S. R., Behzad Abdi, M. R. Abdullah, Ayob Amran, and Mohd Yazid Bin Yahya. "Effect of Strain Rate Upsetting Process on Mechanical Behaviour of Epoxy Polymer." Applied Mechanics and Materials 229-231 (November 2012): 303–8. http://dx.doi.org/10.4028/www.scientific.net/amm.229-231.303.

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The advantages of polymer materials such as high strength and stiffness to weight ratio, corrosion resistance and manufacturing flexibility have increased the industry demands to utilize them in high performance applications. Designing polymer structures depends on a high understanding of their hyper-elastic behaviour, therefore investigating the mechanical behaviour of polymers is necessary. In this paper, the nonlinear behaviour of epoxy polymer is examined under upsetting test. The main aim of the study is to analyse the effect of strain rate on the mechanical behaviour of epoxy polymer. Th

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Selyaev, V. P., D. R. Nizin, and N. S. Kanaeva. "QUANTITATIVE ASSESSMENT OF THE KINETICS OF DAMAGE ACCUMULATION IN THE POLYMER MATRIX STRUCTURE UNDER FULL-SCALE CLIMATIC FACTORS AND TENSILE LOADS." Russian Journal of Building Construction and Architecture, no. 4(52) (November 19, 2021): 63–71. http://dx.doi.org/10.36622/vstu.2021.52.4.006.

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Statement of the problem. In the current study we look at the change in the elastic-strength performance and kinetics of damage accumulation in epoxy polymers under tensile loads in the control state and after full-scale climatic exposure during one calendar year were studied. Damage accumulation kinetics was calculated based on the author's method using methods of fractal analysis of deformation curves for polymer materials samples under tension.Results. We proposed specific index θ to quantify the total number of damages per unit of strength,where its accumulation leads to the destruction of

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Mohan, T. P., and K. Kanny. "Study of Catalytic Effect of Nanolayered Montmorillonite Organoclays in Epoxy Polymer." ISRN Nanotechnology 2011 (September 15, 2011): 1–7. http://dx.doi.org/10.5402/2011/962932.

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This paper is about the study of catalytic effect of nanolayered montmorillonite- (MMT-) based organoclays (OCs) in epoxy polymer by directly monitoring their exothermic temperature versus time during curing. Untreated clays (UCs) of MMT were also filled in the epoxy polymer for comparative study. OCs and UCs were individually filled in epoxy polymer from 0 wt.% to 5 wt.%, and the curing characteristics were examined. The cure behavior of epoxy-OC composites changes as a function of OC concentration. Among the epoxy-OC systems, improved curing reaction was observed at 3 wt.% OC-filled epoxy co

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Khozin, V. G., L. A. Abdrakhmanova, and R. K. Nizamov. "Development of building materials based on polyvinyl chloride and epoxy polymers." Construction Materials, no. 11 (December 20, 2024): 55–62. https://doi.org/10.31659/0585-430x-2024-830-11-55-62.

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The development of production and application of polymers depends on the need to solve many problems, such as safety, health and food, communications, climate, etc. Construction can be singled out in the first place - this is a large field where new materials are used, including polymers. It is polymers that give freedom of creativity to architects, designers of building structures and structures. Polymer materials are not only the industry of synthetic polymers, but also a promising branch of the construction industry. The basis of all polymer construction products is a small list of basic, p

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Mansurov, Z. A., B. Ya Kolesnikov, and V. L. Efremov. "The Role of Carbonized Layers for Fire Protection of Polymer Materials." Eurasian Chemico-Technological Journal 20, no. 1 (2018): 63. http://dx.doi.org/10.18321/ectj709.

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The present work studies the processes occurring in pre-flame zone in the form of «candle-like flame» which is spread over the surface of epoxy polymer. As exemplified by epoxy polymer, it can be seen that the dominating mechanism of heat transfer from flame to pre-flame zone of carbonized polymers is a thermal conductivity by condensed phase (to phase). The mechanism of gasification processes in pre-flame zone is proposed. Gasification of the material in front of the flame edge is a controlling process, and when selecting flame retardants, it is necessary to register their ability to influenc

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Kinloch, Anthony J., Rhys Jones, and John G. Michopoulos. "Fatigue crack growth in epoxy polymer nanocomposites." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 379, no. 2203 (2021): 20200436. http://dx.doi.org/10.1098/rsta.2020.0436.

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The present paper describes detailed analyses of experimental data for the cyclic-fatigue behaviour of epoxy nanocomposite polymers. It has been shown that the data may be interpreted using the Hartman–Schijve relationship to yield a unique, ‘master’, linear relationship for each epoxy nanocomposite polymer. By fitting the experimental data to the Hartman–Schijve relationship, two key materials parameters may be deduced: (i) the term A , which may be thought of as the fatigue equivalent to the quasi-static value of the fracture energy, G c , and (ii) the fatigue threshold value, Δ G thr , belo

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Huu, Nguyen The, Dam Thi Tam, Do Truc Vy, et al. "Effect of silane‐modified SiO₂@Ce³⁺ nanoparticles on the mechanical property and anti‐corrosion for steel of the epoxy coating." Vietnam Journal of Chemistry 61, S3 (2023): 109–15. http://dx.doi.org/10.1002/vjch.202300060.

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AbstractIn this work, nano‐SiO2 have been used as nanocarriers for loading Ce(III) ions (SiO2@Ce3+). After loading, silane coupling agent has been used to modify these nanocarriers (m‐SiO2@Ce3+). Then, these modified nanocarriers were added as green inhibitors into the inner epoxy coating matrix, which was based on the epoxy resin (DER 671X75) and hardener (polyamide Epicure 3125). Morphological study by FE‐SEM showed that the spherical nanoparticles (m‐SiO2@Ce3+) were in size < 100 nm and dispersed rather homogeneously into the polyme matrix. In addition, the addition of nanocarriers at a

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Cerpa, Agnes Elizabeth, Yuri Dekhtyar, and Sanda Kronberga. "Electron Emission as a Tool for Detecting Fracture and Surface Durability of Tensile-Loaded Epoxy Polymers Modified with SiO2 Nanoparticles." Processes 13, no. 5 (2025): 1546. https://doi.org/10.3390/pr13051546.

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Epoxy polymers modified with nanoparticles are increasingly employed due to their enhanced performance in aggressive environments, characterized by mechanical stress, radiation exposure, and extreme temperatures. The mechanical failure of these polymers is attributed to the fracturing of atomic and molecular bonds, that subsequently excites electrons having the capability to be emitted from the nanolayer of the material. The present study demonstrates that the relationship between mechanical loading and electron emission over time serves as an indicator of surface loading and durability. By ut

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Walker, Imari, Manuel D. Montaño, Ronald S. Lankone, D. Howard Fairbrother, and P. Lee Ferguson. "Influence of CNT loading and environmental stressors on leaching of polymer-associated chemicals from epoxy and polycarbonate nanocomposites." Environmental Chemistry 18, no. 3 (2021): 131. http://dx.doi.org/10.1071/en21043.

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Environmental contextCarbon nanotubes are added to polymers such as polycarbonate and epoxy to form nanocomposites with enhanced material properties. Environmental factors including temperature, UV light exposure and pH have the potential to degrade these composites and increase the release of toxic polymer-associated chemicals. This study investigates how carbon nanotube loading decreases the release of known endocrine-disrupting compounds, bisphenol A and 4-tert-butylphenol, from polymer nanocomposites under simulated weathering environments. AbstractNanoparticles such as carbon nanotubes ar

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MANJUNATHA, C. M., N. JAGANNATHAN, K. PADMALATHA, A. C. TAYLOR, and A. J. KINLOCH. "THE EFFECT OF MICRON-RUBBER AND NANO-SILICA PARTICLES ON THE FATIGUE CRACK GROWTH BEHAVIOR OF AN EPOXY POLYMER." International Journal of Nanoscience 10, no. 04n05 (2011): 1095–99. http://dx.doi.org/10.1142/s0219581x11009489.

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A thermosetting epoxy polymer was hybrid-modified by incorporating 9 wt.% of CTBN rubber micro particles and 10 wt.% of silica nano-particles. The unmodified and the hybrid-modified resins were poured into steel moulds and cured to produce bulk epoxy polymer sheets from which standard compact tension test specimens were machined. Fatigue crack growth tests were conducted using a 50 kN servo-hydraulic test machine, with the following test parameters: stress ratio, R = σ min /σ max = 0.1, sinusoidal waveform and frequency, ν = 3 Hz. The crack length was monitored by a compliance technique. The f

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Pandurangan, Mohan Turup, and Krishnan Kanny. "Study of Curing Characteristics of Cellulose Nanofiber-Filled Epoxy Nanocomposites." Catalysts 10, no. 8 (2020): 831. http://dx.doi.org/10.3390/catal10080831.

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In recent years, much attention was focused on developing green materials and fillers for polymer composites. This work is about the development of such green nanofiller for reinforcement in epoxy polymer matrix. A cellulose nanofiber (CNF)-filled epoxy polymer nanocomposites was prepared in this work. The effect of CNF on curing, thermal, mechanical, and barrier properties of epoxy polymer is evaluated in this study. CNF were extracted from banana fiber using acid hydrolysis method and then filled in epoxy polymer at various concentration (0–5 wt.%) to form CNF-filled epoxy nanocomposites. Th

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Wang, Xin, Xing Zhao, Siqi Chen, and Zhishen Wu. "Static and fatigue behavior of basalt fiber-reinforced thermoplastic epoxy composites." Journal of Composite Materials 54, no. 18 (2019): 2389–98. http://dx.doi.org/10.1177/0021998319896842.

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The static, fatigue properties and their damage mechanism of basalt fiber-reinforced thermoplastic epoxy polymer composites are investigated. The stress–life curves and stiffness degradation under long-term cyclic loading were tested for basalt fiber-reinforced thermoplastic epoxy polymer. An advanced fatigue loading equipment combined with in situ scanning electron microscopy was used in the tests to track the damage propagations and analysis the fracture surfaces of all specimens. Results were also compared with those of thermosetting epoxy-based basalt fiber-reinforced polymer composites. T

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Funahashi, Yoshiaki, Yunzi Xin, Kunihiko Kato, Huu Hien Nguyen, and Takashi Shirai. "Enhanced electrical property of graphite/Al2O3 composite fabricated by reductive sintering of gel-casted body using cross-linked epoxy polymer." Journal of Advanced Ceramics 11, no. 4 (2022): 523–31. http://dx.doi.org/10.1007/s40145-021-0552-4.

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AbstractIn the present study, graphite/alumina composites are fabricated via reductive sintering of gel-casted green bodies with structurally controlled cross-linked epoxy polymers for the first time. The cross-linking degrees of polymers are tuned by the amount ratio of epoxy monomer/polyvinyl alcohol cross-linker utilized in gel-casting process. Superior electrical properties with respect to 5-fold enhanced electrical conductivity and 2-fold higher carrier mobility are successfully achieved in graphite/alumina composite fabricated from cross-linked epoxy polymer, whose phenomenon is attribut

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Stroganov, Victor, Oleg Stoyanov, Ilya Stroganov, and Eduard Kraus. "Functional Modification Effect of Epoxy Oligomers on the Structure and Properties of Epoxy Hydroxyurethane Polymers." Advances in Materials Science and Engineering 2018 (August 9, 2018): 1–16. http://dx.doi.org/10.1155/2018/6743037.

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We introduce different ways to solve the actual fragility problem of the epoxy-amine polymers by curing epoxidian oligomers with aliphatic amines without additional heat input. The pathways are the oligomer-oligomeric modification of epoxy resins-epoxy oligomers (EO), with their conversion to oligoethercyclocarbonates (OECC) by carbonization with carbon dioxide. The cocuring of these oligomers as a result of aminolysis competing reactions is “epoxide-amine” (forming a network polymer) and “cyclocarbonate-amine” (forming the linear hydroxyurethane, extending the internodal chains). Formation of

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Liang, Ruijun, Yuhan Sun, and Jinghui Zhu. "Applications of Polymer Materials in Power Industry, Tissue Engineering and Fuel Cells." Highlights in Science, Engineering and Technology 13 (August 21, 2022): 190–97. http://dx.doi.org/10.54097/hset.v13i.1350.

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A huge effort has been done over the past 20 years to research the possible electrical benefits of such newly developing materials, polymer composite, and a significant amount of data have been published. Recent research suggests that polymer materials are capable for insulating system particularly unfilled XLPE and epoxy resins or filled with many types of fillers. The principal applications for polymer composites by XLPE and epoxy resins include cables, motors, and generators, but further study is needed to enhance their capabilities. This research will mainly introduce the application of po

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Anagnostopoulos, Costas A., and Melina Dimitriadi. "Study on High Performance Polymer-Modified Cement Grouts." CivilEng 2, no. 1 (2021): 134–57. http://dx.doi.org/10.3390/civileng2010008.

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Engineers worldwide use various additives or chemical admixtures, such as polymer latexes, to improve the properties of cementitious materials for many construction projects. In this paper, the influence of acrylic or epoxy resin emulsions, along with a polycarboxylate superplasticiser on some basic properties (rheological behaviour, setting time, bleeding, strength) of thick cement grouts is presented. The experimental approach included the use of different polymer dosages mixed with grouts made of low water to cement ratios. The laboratory tests revealed that the incorporation of acrylic res

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Kishore, A., D. B. Venkatesh, M. Ashok Kumar, A. Ramesh, K. Nikil Murthy, and N. Karthikeyan. "Hydrophilic Modified Clay Nanocomposites: Effect of Clay on Thermal and Vibrational Properties." International Letters of Chemistry, Physics and Astronomy 27 (February 2014): 73–86. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.27.73.

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Epoxy (LY-556/HY-951) system filled with modified clay (MC) was synthesized by using mechanical shear mixing with the addition of hardener as tri-ethylene-tetra-amine (TETA). The effect of the fumed silica can be negated by the application of a shear force (e.g. mixing, brushing, spraying etc), allowing the liquid to flow, level out and permit the escape of entrapped air. The reinforcement effects of MC in the epoxy polymer on thermal, mechanical and vibration properties were studied. Curing study shows that the addition MC does not show any effect in the curing behavior of epoxy polymer. Ther

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Kishore, A., D. B. Venkatesh, M. Ashok Kumar, A. Ramesh, K. Nikil Murthy, and N. Karthikeyan. "Hydrophilic Modified Clay Nanocomposites: Effect of Clay on Thermal and Vibrational Properties." International Letters of Chemistry, Physics and Astronomy 27 (February 6, 2014): 73–86. http://dx.doi.org/10.56431/p-5c253f.

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Epoxy (LY-556/HY-951) system filled with modified clay (MC) was synthesized by using mechanical shear mixing with the addition of hardener as tri-ethylene-tetra-amine (TETA). The effect of the fumed silica can be negated by the application of a shear force (e.g. mixing, brushing, spraying etc), allowing the liquid to flow, level out and permit the escape of entrapped air. The reinforcement effects of MC in the epoxy polymer on thermal, mechanical and vibration properties were studied. Curing study shows that the addition MC does not show any effect in the curing behavior of epoxy polymer. Ther

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Sandeep Yadav and Sanjay Mishra. "Fabrication and Mechanical Characterization of Natural Fiber-Reinforced Polymer Composites." International Research Journal on Advanced Engineering Hub (IRJAEH) 2, no. 06 (2024): 1570–77. http://dx.doi.org/10.47392/irjaeh.2024.0215.

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Natural fibers, which are usually discarded as agricultural waste, have a significant potential to serve as reinforcements. This paper investigates the mechanical properties of polymer composites reinforced with natural fibers like flax, hemp, and jute. Epoxy resin is used to make the matrix, and the composites were fabricated using the hand lay-up technique. Mechanical characterization of the fabricated composites reveals that hemp-reinforced natural polymers have better tensile and flexural strength compared to other jute- and flax-reinforced composites. Composites containing Jute/ Epoxy (S1

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Nizina, T. A., Dmitrii R. Nizin, N. S. Kanaeva, N. M. Kuznetsov, and D. A. Artamonov. "Applying the Fractal Analysis Methods for the Study of the Mechanisms of Deformation and Destruction of Polymeric Material Samples Affected by Tensile Stresses." Key Engineering Materials 799 (April 2019): 217–22. http://dx.doi.org/10.4028/www.scientific.net/kem.799.217.

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The paper proposes an approach to study the mechanism of deformation of epoxy polymers based on the methods of fractal calculations. The advantages of the method for determining the fractality index of the deformation curves of polymer samples using the minimum coverage method are shown. An algorithm for the quantitative determination of the location of the "critical" points of the deformation curves of polymer samples under tension is proposed. It is shown that the use of the developed methodology for the fractal analysis of time series on the basis of a set of points of deformation curves of

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Wu, Yishuo, Guangyang Shang, Cong Ma, et al. "Study on the Polymer Morphology and Electro-Optical Performance of Acrylate/Epoxy Resin-Based Polymer-Stabilized Liquid Crystals Based on Stepwise Photopolymerization." Polymers 16, no. 17 (2024): 2446. http://dx.doi.org/10.3390/polym16172446.

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Stepwise photopolymerization is a miraculous strategy modulating the polymer skeleton and electro-optical properties of light modulators based on liquid crystal/polymer composites. However, owing to the indistinct polymerization mechanism and curing condition discrepancy, the required polymer structures and electro-optical properties are hard to be controlled precisely. Herein, a novel polymer-stabilized liquid crystal film based on acrylate/epoxy resin is proposed, fabricated and the relationships between preparation process, polymer content, polymer morphology and electro-optical properties

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U.C.Jha, M. Sivaperumal, R. Jagan, Abishek S.A., and S. Harikaran. "Effect on Mechanical Properties for Jute, Coir and Bamboo Natural Fiber Reinforced Epoxy Based Composites." Research and Reviews: Journal of Mechanics and Machines 7, no. 2 (2025): 1–17. https://doi.org/10.5281/zenodo.15117623.

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<em>Jute, Coir and Bamboo Natural Fiber composites are considered to have potential use as a reinforcing material in epoxy polymer-based composites because of their good strength, stiffness etc.In present study, mechanical properties for these natural fiber composites were evaluated. Here, these natural fibers are the fiber reinforcement and epoxy polymer resin as a matrix material. Composite were prepared with different longitudinal (Unidirectional) natural fiber reinforced with epoxy-based polymer. Mechanical test i.e. tensile test was performed on UTM machine and the results are reported. T

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Shaffer, O. L., F. H. Walker, and M. S. El-Aasser. "Iodopropionic acid staining of waterborne epoxy films." Proceedings, annual meeting, Electron Microscopy Society of America 53 (August 13, 1995): 496–97. http://dx.doi.org/10.1017/s0424820100138853.

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The examination of polymer material by transmission electron microscopy (TEM) often relies on staining in order to improve contrast or preferentially stain a polymer phase. Stains such as osmium tetroxide for unsaturated polymers and ruthenium tetroxide for unsaturated as well as certain saturated polymers have been used quite extensively. A new stain, 3-iodopropionic acid, has been found to be very useful to stain preferentially the amine rich domains in waterborne epoxy films.An epoxy dispersion (epoxy equivalent weight, EEW=625) and a polyamine adduct curing agent (AHEW=163) at a 1.5:1 stoi

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J. Mohmmed, Mohmmed, Khalid M. Owaid, and Raouf M. Raouf. "Studies on the Microstructure of Epoxy-Cement Mortar." ECS Transactions 107, no. 1 (2022): 17979–97. http://dx.doi.org/10.1149/10701.17979ecst.

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Introduction of polymers into the cement composites improves same of the properties of concretes and mortars. Therefore, the polymer-cement composites are successfully used in construction. The model of microstructure formation in cement composites modified with thermoplastic polymer (pre-mix modifiers) has already been developed and successfully implemented. However, the formation of microstructure in the case of epoxy-cement composites (containing post-mix modifier) demonstrates same peculiarities which should be taken into account when modelling the process. The microstructure of epoxy-ceme

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