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Journal articles on the topic 'Silica nano-particles'

Author: Grafiati
Published: 3 June 2025
Last updated: 31 July 2025

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1

Bahadori, Hadi, and Payam Hosseini. "REDUCTION OF CEMENT CONSUMPTION BY THE AID OF SILICA NANO-PARTICLES (INVESTIGATION ON CONCRETE PROPERTIES)." Journal of Civil Engineering and Management 18, no. 3 (2012): 416–25. http://dx.doi.org/10.3846/13923730.2012.698912.

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In this study, effects of replacing cement with colloidal amorphous silica nano-particles have been experimentally investigated on the physical and mechanical properties, durability and microstructure of concrete. Experimental results include workability, fresh concrete density, and hardened concrete properties like compressive strength at different ages of 3, 7, and 28-days, and also 28-days splitting tensile strength. Furthermore, influence of silica nano-particles on durability and microstructure of concrete for 28-days specimens was tested by conducting water absorption test, Scanning Elec
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2

Alvansazyazdi, Mohammadfarid, Fabricio Alvarez-Rea, Jhon Pinto-Montoya, et al. "Evaluating the Influence of Hydrophobic Nano-Silica on Cement Mixtures for Corrosion-Resistant Concrete in Green Building and Sustainable Urban Development." Sustainability 15, no. 21 (2023): 15311. http://dx.doi.org/10.3390/su152115311.

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The use of hydrophobic nano-silica particles in concrete for improved corrosion resistance and durability has been explored in recent years, and its potential impact on sustainable urban development and green building practices has been studied. The impact of substituting hydrophobic nano-silica particles for 2% of the cement weight in high-strength concrete mixes was investigated in this research. The study focuses on evaluating the physical-mechanical properties, including compressive strength, tensile strength, modulus of elasticity, and Poisson’s ratio. Additionally, the influence of these
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3

Tahmassebi, Nargess. "Effect of Addition of Nano Silica on Modulus of an Acrylic/Melamine Automotive Topcoat." Advanced Materials Research 488-489 (March 2012): 915–18. http://dx.doi.org/10.4028/www.scientific.net/amr.488-489.915.

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In the present study, the influence of addition of various loads of hydrophobic nano silica on modulus of an acrylic melamine automotive topcoat was investigated. The results indicated that addition of hydrophobic nano silica to acrylic melamine decreased its Young’s modulus. The same behavior was observed for nano indentation modulus just at low nano silica content. This property was increased at high nano silica content. Poor interaction between nano particles / acrylic melamine and ball bearing effects of nano particles were used to explain decrease in modulus. Increase in nano indentation
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4

Cai, Jixiang, Youwen Li, Lianghuan Wei, et al. "Recovery of Chlorosilane Residual Liquid to Prepare Nano-Silica via the Reverse Micro-Emulsion Process." Materials 16, no. 21 (2023): 6912. http://dx.doi.org/10.3390/ma16216912.

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In this paper, nano-silica particles were prepared from chlorosilane residue liquid using an inverse micro-emulsions system formed from octylphenyl polyoxyethylene ether (TX-100)/n-hexanol/cyclohexane/ammonia. The influence of different reaction conditions on the morphology, particle size, and dispersion of nano-silica particles was investigated via single-factor analysis. When the concentration of chlorosilane residue liquid (0.08 mol/L), hydrophile-lipophilic-balance (HLB) values (10.50), and the concentration of ammonia (0.58 mol/L) were under suitable conditions, the nano-silica particles
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5

Wang, Shuo, Meng Cao, Hongqian Xue, et al. "Nano-silica reinforced epoxy resin/nano-rubber composite material with a balance of stiffness and toughness." High Performance Polymers 33, no. 6 (2021): 685–94. http://dx.doi.org/10.1177/0954008320988752.

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In the electronics and aerospace industries, epoxy resins are generally regarded as economical and efficient adhesives and have a high status. However, epoxy resins are highly crosslinked polymers and are very brittle adhesives where they are prone to fast crack propagation under dynamic loads. Therefore, it is very necessary to enhance the toughness of epoxy resin adhesives. Nano-rubber has been proved to be an important toughening agent for epoxy resin, which can significantly improve the fracture toughness of epoxy resin. However, increasing the toughness of epoxy resin by adding nanomateri
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Zhou, Li Zhong, and De Chang Jia. "Influence of Nano-Silica on Microstructure and Mechanical Properties of SiO2/BN Ceramics." Key Engineering Materials 353-358 (September 2007): 1529–32. http://dx.doi.org/10.4028/www.scientific.net/kem.353-358.1529.

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In this paper, nano-silica particles were incorporated to a fused silica-boron nitride dual phase ceramics originally using micrometer sized particles as starting powders. Effects of nano-silica content on density, sintering behavior, mechanical properties and microstructure of the dual phase ceramics were investigated. It was found that with the addition of nano-silica particles, the density and mechanical properties of the dual phase ceramics increased. Flexural strength and fracture toughness of them attained to 51.4MPa and 0.8MPa·m1/2, respectively. The increased density and spatial networ
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Liu, Fang, Zhen Qing Wang, Wen Yan Liang, and Yong Wei Qu. "Effect of Nano-Silica on Flexural Properties of Epoxy Resin." Advanced Materials Research 383-390 (November 2011): 3845–48. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.3845.

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Based on Zwick/Roell,this paper had carried on flexural experiments of epoxy resin filled with nano-silica particles, obtaining related mechanical properties.Microstructures of nanocomposites were analyzed by scanning electron microscopy (SEM) in the meanwhile. The flexural experiments revealed that nano- silica particles strengthened epoxy resin very well, and flexural modulus of modified matrices rised due to rigid silica particles, compared with pure epoxy matrices. Flexural strengths of epoxies modified by silica nanoparticles improved significantly.
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8

Prathebha, P., Santhappan Aswini, and J. Revathy. "Effect of Nanoparticles on Strength and Durability Properties on Cement Mortar." Applied Mechanics and Materials 857 (November 2016): 65–70. http://dx.doi.org/10.4028/www.scientific.net/amm.857.65.

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The nanotechnology provides an impact on construction industry materials with new properties and produce material with better performance. This paper presents the experimental investigation on the effects of nano particles incorporated in the cementitious materials to study the strength and durability properties of cement mortar. Nano particles such as nano alumina (NA), nano ferric oxide (NF) and nano silica (NS) were mixed at different proportions of 0.5%, 1% and 1.5% by weight of binder in single and binary combinations. Mechanical properties such as compressive strength and split tensile s
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9

Kurdi, Abdulaziz, and Li Chang. "Comparative Tribological and Mechanical Property Analysis of Nano-Silica and Nano-Rubber Reinforced Epoxy Composites." Applied Mechanics and Materials 875 (January 2018): 53–60. http://dx.doi.org/10.4028/www.scientific.net/amm.875.53.

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Nano-filler reinforced epoxy composites has been investigated in this study subjected to various mechanical and pin-on-disk tribological tests. Two different types of nano-filler were used namely, rigid nano-silica (SiO2) particles and soft nano-rubber particles. Incorporation of nano-filler in polymer matrix enhance mechanical properties. In addition, tribological response of composites are also better compared to neat epoxy polymer. However, the effect of nano-silica addition is much more pronounced than that of nano-rubber due to the high rigidity of nano-silica reinforced epoxy composite.
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10

Lushinga, Nonde, Zejiao Dong, and Liping Cao. "Evaluating the High-Temperature Properties and Reaction Mechanism of Terminal Blend Rubber/Nano Silica Composite Modified Asphalt Using Activated Rubber." Nanomaterials 12, no. 24 (2022): 4388. http://dx.doi.org/10.3390/nano12244388.

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Terminal blend (TB) rubberized asphalt is a popular technology in the production of rubberized asphalt. However, it always presents challenges regarding the inadequate high-temperature rutting performance of the binders. Additionally, crumb rubber (CR), a modifier of asphalt is a cross-linked material which presents poor compatibility between CR particles and bitumen. Incorporating nanomaterials and pretreating CR particles are two possible solutions to address this drawback. But the performance improvement and modification mechanism of the composite TB binders is not clearly understood. There
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11

MENDES, T. M., and W. L. REPETTE. "Effect of nano-silica on Portland cement matrix." Revista IBRACON de Estruturas e Materiais 12, no. 6 (2019): 1383–89. http://dx.doi.org/10.1590/s1983-41952019000600009.

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Abstract The use of nano-particles is a current trend that may play an important role for improving the mechanical performance of Portland cement. The aim of this study is to evaluate the effect of nano-silica on Portland cement matrix. The particle size distribution of Portland cement matrix was modified by the incorporation of 11, 6.2, 3.1, 1.7, 0.85 and 0.42 wt.% of nano-silica. The water demand and the consumption of dispersant were adjusted, and the rheological properties of suspensions were analyzed through rotational rheometry. The mechanical performance of studied mixtures was evaluate
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12

Terayama, Yutaka, Panart Khajornrungruang, Jihoon Seo, Satomi Hamada, Yutaka Wada, and Hirokuni Hiyama. "Detachment Energy Evaluation in Nano-Particle Cleaning Using Lateral Force Microscopy." Applied Sciences 14, no. 18 (2024): 8145. http://dx.doi.org/10.3390/app14188145.

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It has been difficult to detach abrasive particles smaller than 50 nm from polished surfaces in post-CMP cleaning. During the cleaning process, the residual nano-particles exert shear force in the inevitable shear flow. In order to understand the cleaning mechanism, it is indispensable to investigate not only the force but also the energy acting on different-sized nano-particles. In this article, we proposed the evaluation of detachment energy (the energy required to detach nano-particles) by using Lateral Force Microscopy. As an example, the dominant detachment energy of the silica nano-parti
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13

Saulick, Yunesh, and Sergio Lourenço. "Hydrophobisation of clays and nano silica for ground engineering." E3S Web of Conferences 195 (2020): 03039. http://dx.doi.org/10.1051/e3sconf/202019503039.

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Altering the hydrophobicity of particles allows their use as functional construction materials in ground engineering (e.g. in barriers). This study examines the hydrophobisation of nano to micro particles by using two clays (kaolin and halloysite) and nano silica. To induce hydrophobicity, dimethyldichlorosilane (DMDCS) was used in concentrations varying from 0.25% to 20%. The sessile drop method was used to measure the contact angle (CA) of the particles. Kaolin was initially hydrophobic with a CA of 93 5◦ while the other two materials were hydrophilic. The addition of DMDCS to the materials
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14

Gun'ko, V. M. "Porosity and packing features of nano- and micro-particles of carbon and silica adsorbents." Surface 15(30) (December 30, 2023): 80–96. http://dx.doi.org/10.15407/surface.2023.15.080.

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Comparative characterization of the particulate morphology and texture of various silicas (fumed silicas, silica gels, ordered mesoporous silicas) and carbons (chars and activated carbons, AC) is of interest from both theoretical and practical points of view since it allows one better understanding of advantages and disadvantages of various adsorbents upon their interactions with different adsorbates, co-adsorbates, and solutes in various dispersion media. Complete characterization needs application of a certain set of methods that is analyzed in the present paper. It is shown that the main di
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15

Fares, Galal, and Mohammad Iqbal Khan. "Nanosilica and its Future Prospects in Concrete." Advanced Materials Research 658 (January 2013): 50–55. http://dx.doi.org/10.4028/www.scientific.net/amr.658.50.

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The implementation of nanotechnology in concrete has led to an active incorporation of nano silica in concrete in a global level. Different methods of nano silica production are available and vary from expensive to cost-effective routes. Nano silica particle sizes and their chemical and physical nature depend on the method of production. Several types of dispersed nano silica are recommended to be used in concrete due to practical reason. However, the dry powders of nano silica particles are difficult to be dispersed in concrete and require special types or family of nano superplasticizers. Th
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16

Dr., Ahmed M. Tahwia Dr.Mohamed Y.Elshikh WalidElmetwaly. "PROPERTIES OF ULTRA HIGH STRENGTH CONCRETE INCORPORATING NANO-SILICA." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 8, no. 5 (2017): 678–90. https://doi.org/10.5281/zenodo.800599.

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The objective of this investigation is to study the effect of nano-silica addition on the fresh and hardened properties of ultra high strength concrete. Nano-silica with 99.8% SiO<sub>2</sub> content and particles size of 5 to 20 nm used in concrete mixes as a replacement of silica fume content. The total percentage of silica fume and nano-silica was 20% of weight of binder content. Nano-silica was added in seven percentages (0.5%, 1.0%, 1.5%, 2%, 2.5%, 3.0%, 3.5%) of weight of cementitious materials. The properties of ultra high strength concrete was investigated through twenty seven concrete
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17

Jahangiri, Ali Asghar, and Yasser Rostamiyan. "Mechanical properties of nano-silica and nano-clay composites of phenol formaldehyde short carbon fibers." Journal of Composite Materials 54, no. 10 (2019): 1339–52. http://dx.doi.org/10.1177/0021998319877225.

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The mechanical properties of phenol formaldehyde (phenolic novolac) and short carbon fiber T300 polymer-based nano-composites-reinforced with nano-silica and nano-clay particles have been studied experimentally. By increasing the weight percentage of the short carbon fiber in the phenol formaldehyde, the strength of the composite increases, but its plastic deformation is severely limited. Also, in the case of composite reinforced with nano-silica particles, the tensile and flexural strength of the composite with the increase in the weight percentage of the nano-silica increase by 1% to 3%, whe
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18

Kumar, S. Pradeep, M. Mohamed Yassin, S. Marimuthu, M. K. Kalarani, S. Thiyageshwari, and Guru Meenakshi. "Influence of rice husk ash-derived silica nanoparticles on sweetcorn (Zea mays L. sachharata) seed germination." Journal of Applied and Natural Science 15, no. 3 (2023): 1299–307. http://dx.doi.org/10.31018/jans.v15i3.4893.

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In agriculture, the utilization of nanomaterials has garnered significant global attention. This research adopts a pioneering approach to investigate the influence of nanosilica on the germination dynamics of sweetcorn seeds. The present study aimed to synthesize and analyze an amorphous nano-silica material using rice husk ash (RHA) and its impact on the germination of sweetcorn seeds (Zea mays L. sachharata). The extracted nano-silica particles dispersed into six rates of suspensions (0, 100, 200, 300, 400 and 500 ppm) were used to study their effects on seed germination. The synthesized amo
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19

Hayek, Ritta A. L., Samir Tabbache, Ahmad Ibrahim Kara Ali, and Mohammad Ahmad. "The Efficacy of Silica Nano-Particles on the Inhibition of Oviposition of Tomato Borer, Tuta absoluta." Arab Journal for Plant Protection 41, no. 3 (2023): 278–80. http://dx.doi.org/10.22268/ajpp-41.3.278280.

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Hayek, R.A.L., S. Tabbache, A.I.K. Ali and M. Ahmad. 2023. The Efficacy of Silica Nano-Particles on the Inhibition of Oviposition of Tomato Borer, Tuta absoluta. Arab Journal of Plant Protection, 41(3): 278-280. https://doi.org/10.22268/AJPP-41.3.278280 A laboratory experiment was conducted to examine the efficacy of silica nano-particles (SNPs) at 500 and 1000 ppm concentrations on oviposition of Tuta absoluta. One month old tomato plants in pots were used and randomly placed in wooden cages (4 pots/cage). Five pairs of adult insects (males and females) were released in each cage. The number
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20

Klein, Rob J., P. Maarten Biesheuvel, Ben C. Yu, Carl D. Meinhart, and Fred F. Lange. "Producing super-hydrophobic surfaces with nano-silica spheres." International Journal of Materials Research 94, no. 4 (2003): 377–80. http://dx.doi.org/10.1515/ijmr-2003-0068.

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Abstract Polycrystalline alumina substrates were dip-coated in dilute suspensions formed with dispersed, nano-silica particles. The fractional surface coverage of the alumina substrate was varied between ≈ 0.05 to ≈ 0.4 by changing concentration of particles in the silica slurry. After a heat treatment to partially sinter the particles to the surface, the surface was made hydrophobic by a reaction with a solution containing fluorosilane molecules. Wetting measurements showed that the contact angle between the surface and water droplets increased with decreasing area coverage of nano-silica sph
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Rajendran, V. "Development of Nanomaterials from Natural Resources for Various Industrial Applications." Advanced Materials Research 67 (April 2009): 71–76. http://dx.doi.org/10.4028/www.scientific.net/amr.67.71.

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In the present study, the synthesis of nano structured materials such as nano alumina (Al2O3), nano silica (SiO2), and nano hydroxyapatite (HAp) have been discussed for industrial applications. The oxide nano materials are prepared employing chemical methods from natural resources. The HAp is prepared employing sol-gel process using chemical precursors. The synthesised nano alumina (Al2O3) powder has been used to improve the physicochemical properties of refractories. The prepared nano particles employing different process techniques have been characterized using XRD, FTIR, EDAX and SEM studie
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Sabeeh, Nawras S., and Abbas K. Mohammad. "Bio-based synthesis of a sustainable Nano drag reducing agent for sprinkler irrigation systems." IOP Conference Series: Earth and Environmental Science 1232, no. 1 (2023): 012016. http://dx.doi.org/10.1088/1755-1315/1232/1/012016.

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Abstract High-grade silica Nano particles were extracted from rice husk using a straightforward thermochemical method. The specifications of the isolated Nano particles were verified using a variety of material characterization techniques. Siloxane and silanol groups were notably visible in the spectra obtained using Fourier transform infrared spectroscopy. Scanning Electron Microscopy images revealed main Nano particles alongside secondary Micro particles. The size of the particles varied from 14.56 to 33.72 nm. The drag reduction experiments were took place in a facility that uses a forced c
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Min, Ji, Yousef Zandi, Alireza Sadighi Agdas, et al. "The Numerical Analysis of Replenishment of Hydrogel Void Space Concrete Using Hydrogels Containing Nano-Silica Particles through ELM-ANFIS." Gels 8, no. 5 (2022): 299. http://dx.doi.org/10.3390/gels8050299.

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Currently, Nano-materials are gaining popularity in the building industry due to their high performance in terms of sustainability and smart functionality. In order to reduce cement production and CO2 emissions, nano-silica (NS) has been frequently utilized as a cement alternative and concrete addition. The influence of Nano-silica-containing hydrogels on the mechanical strength, electrical resistivity, and autogenous shrinkage of cement pastes was investigated. The goal of this study was to identify the main structure–property relationships of water-swollen polymer hydrogel particles used as
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Chavoshi, Ava, Mehran Rostami, Mehdi Ghahari, and Farhood Najafi. "UV-Curable Silica-Novolac Epoxy Methacrylate Hybrid Resin for Surface Coating Synthesis and Characterization." Journal of Colour Science and Technology 8 (June 7, 2015): 295–305. https://doi.org/10.5281/zenodo.15609247.

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<strong>Abstract</strong> UV-curing coating based on novolac epoxy acrylate resin was synthesized and formation of desired structures was confirmed by&nbsp;appearing of 1722, 810 and 945 cm-1 in the FTIR spectrums. In order to study the effect of presence of inorganic silica on the properties of synthesized resin, an organic/inorganic nano-composite was prepared using the synthesized resin and silica nanoparticles. Scanning electron microscope (SEM) revealed very high agglomeration of nano particles, during this process that was due to the incompatibility of two organic and inorganic phases wh
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Han, Youn Gyu, Tomonori Shibata, Rajagopalan Ramaseshan, Tohru Sekino, and Koichi Niihara. "Fabrication and Evaluation of the Novel Elastomer Based Nanocomposite with Pressure Sensing Function." Materials Science Forum 544-545 (May 2007): 741–44. http://dx.doi.org/10.4028/www.scientific.net/msf.544-545.741.

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A novel organic/inorganic composite material which can work as a pressure sensor has been synthesized. This composite basically contains nano-sized carbon particles as conductive filler into an elastomer matrix to achieve pressure sensitive function. The superior pressure sensitive effect was showed at 0.88vol% of carbon particles while in the previous study the micro-sized carbon particle was required above 30vol%. In addition, nano-sized silica particles were added to reinforce electrical insulation properties and to improve the pressure sensing reliability of the composite. The addition of
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Aziza, F. Sharaby, R. Ebeid Amany, and A. Gesraha Mohamed. "Histological Studies on Heteracris littoralis (Rambur) Treated with Silica Nano-particles / Challenger Formulation." Asian Journal of Biology 2, no. 3 (2017): 1–6. https://doi.org/10.9734/AJOB/2017/33780.

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<strong>Aim: </strong>Local diatomaceous earth (Silica nano-particles) and commercial pesticide (Challenger 36% SC) formulation was tested against alfalfa grasshopper, <em>Heteracris</em> <em>littoralis</em> (Rambur, 1838) (Orthopetra: Acrididae) under laboratory conditions. <strong>Study Design:</strong> Histological study for alimentary tract using light microscope. <strong>Place and Duration of Study:</strong> Department of Pests and Plant Protection, National Research Centre, Egypt- 2016-2017. <strong>Methodology:</strong> Fourth instar nymphs of <em>H. littoralis</em> were taken from labo
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Li, Zhi, Yanmin Wang, and Yanling Wu. "Nano Fumed Silica Particles on Cement Properties." IOP Conference Series: Earth and Environmental Science 525 (July 7, 2020): 012149. http://dx.doi.org/10.1088/1755-1315/525/1/012149.

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Sanjuán, M. A., C. Argiz, J. C. Gálvez, and E. Reyes. "Combined effect of nano-SiO2 and nano-Fe2O3 on compressive strength, flexural strength, porosity and electrical resistivity in cement mortars." Materiales de Construcción 68, no. 329 (2018): 150. http://dx.doi.org/10.3989/mc.2018.10716.

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The compressive strength, flexural strength, porosity and electrical resistivity properties of cement mortars with nano-Fe2O3 and nano-SiO2 are studied. Amorphous silica is the main component of pozzolanic materials due to its reaction with calcium hydroxide formed from calcium silicate (C3S and C2S) hydration. The pozzolanic reaction rate is not only proportional to the amount of amorphous silica but also to the surface area available for reaction. Subsequently, fine nano-Fe2O3 and nano-SiO2 particles in mortars are expected to improve mortar performance. The experimental results showed that
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Mahmud, Mudrikah Sofia, Farah Diana Mohd Daud, Norshahida Sariffudin, Hafizah Hanim Mohd Zaki, Norhuda Hidayah Nordin, and Nur Farahiyah Mohammad. "High Purity Nano-Silica from Rice Husk Ash (RHA) via Chemical Method as Additive/Stabilizing Agent for CO<sub>2 </sub>Capture Application." Key Engineering Materials 908 (January 28, 2022): 373–78. http://dx.doi.org/10.4028/p-85u98z.

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This paper aims to synthesize high purity nano-sized silica from rice husk ash (RHA) by chemical method and investigate its physical and chemical properties. Through a controlled burning of rice husk, the white-colored RHA is obtained. Next, the RHA is subjected to the pre-treatment of acid leaching and thermal treatment. The synthesizing process has been done through the precipitation method. The EDX and FTIR analysis confirmed that the prepared powder consists of high purity silica particles through the detection of characteristic peaks of O and Si elements and the presence of primary bonds
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Permpatdechakul, Thitipat, Panart Khajornrungruang, Keisuke Suzuki, Aran Blattler, and Jiraphan Inthiam. "Experimental In-Situ Observatory on Brownian Motion Behavior of 105 nm Sized Silica Particles During Chemical Mechanical Polishing of 4H-SiC by an Evanescent Field." International Journal of Automation Technology 18, no. 1 (2024): 47–57. http://dx.doi.org/10.20965/ijat.2024.p0047.

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The experimentally observing optical systems for on-machine measurement have been developed to study on nano-polishing phenomena during the chemical mechanical polishing process, which is a wet process in semiconductor manufacturing. The developed optical system employs an evanescent field to selectively enhance exclusively the observatory of phenomena occurring on the surface being polished, offering a lateral resolving power of approximately 400 nm, in the slurry concentration of up to 5 wt% based on the numerical aperture of the objective lens. In addition, there is also the observability o
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Rose, Séverine, Alba Marcellan, Tetsuharu Narita, François Boué, Fabrice Cousin, and Dominique Hourdet. "Structure investigation of nanohybrid PDMA/silica hydrogels at rest and under uniaxial deformation." Soft Matter 11, no. 29 (2015): 5905–17. http://dx.doi.org/10.1039/c5sm01121c.

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Cao, Ke Sheng, Song Tian Li, Yong Hua Cheng, and Xiao Liang Guo. "Preparation and Tribological Performance of Silica/Ethylene-Octene Copolymer Nanocomposites." Applied Mechanics and Materials 606 (August 2014): 41–46. http://dx.doi.org/10.4028/www.scientific.net/amm.606.41.

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The maleic anhydride-grafted ethylene-octene copolymer (POE-g-MAH) and 2, 3-epoxy propoxy propyltrimethoxysilicane (KH-560) modified nano-silica particles/ POE nanocomposites were fabricated by solution coprecipitation. Tribological behaviors of these nanocomposites were investigated using a pin-on-disk friction and wear tester under dry friction condition, and worn surfaces were studied by scan electron microscope (SEM) and color 3D laser scanning microscope, respectively. The results indicated that the addition of the low inclusion (more than 10 wt%) of nano-silica particles could improve th
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Blankson, Marva Angela, Savaş Erdem, and Ezgi Gürbüz. "Micro-Mechanical and 3D Fractal Analysis, Durability, and Thermal Behaviour of Nano-Modified Cementitious Lightweight Composites for Building Facades." Buildings 11, no. 3 (2021): 85. http://dx.doi.org/10.3390/buildings11030085.

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There are increasing research endeavours on the application of nanotechnology in the construction industry and lightweight composites. In this study, the influence of different percentage (1%, 2%, and 3% by weight of cement) colloidal nano-silica particles on the mechanical, thermal, and durability properties of lightweight cementitious composites was studied through measurement of compressive strength, flexural response, micro-hardness measurement, pore structure analysis, thermal conductivity, water permeability, and chloride penetration. Moreover, 3D X-ray Compute Tomography together with d
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Manoj, G., and S. Thirugnanasambandam. "Experimental Investigations on Nano Silica Concrete." E3S Web of Conferences 559 (2024): 04046. http://dx.doi.org/10.1051/e3sconf/202455904046.

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In construction industry the innovation and advancement technology has major scope in new inventions. Nano materials plays their role in the improvement of the construction sector by enhancing the material properties. Nano particles which are having high surface area compared to its volume. Nano materials are more reactive and improve the concrete mechanical properties. In order to study the performance of the nano silica concrete, the various mix ratios were used. The optimum dosage of nano silica in concrete was found. Various dosages of nano silica 0%, 1.5%, 2%, 2.5%, 4%, 6%, 8% were attemp
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Luo, Jian Hui, Yuan Yang Li, Ping Mei Wang, et al. "A Facial Route for Preparation of Hydrophobic Nano-Silica Modified by Silane Coupling Agents." Key Engineering Materials 727 (January 2017): 353–58. http://dx.doi.org/10.4028/www.scientific.net/kem.727.353.

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Nano-silica was prepared using tetraethylorthosilicate (TEOS) as precursor by sol-gel technology based on stÖber method. These silica nanoparticals were further modified with silane coupling agents, i.e., Hexadecyltrimethoxysilane (HDTMS), dimethoxydiphenylsilane (DMMPS), to introduce organic functional groups on the surface of SiO2 nanoparticles. The Fourier transform-infrared (FTIR) spectra indicated that these silane coupling agents were anchored on the surface of silica particles. And the obtained organic–inorganic hybrid SiO2 particles showed an improvement in hydrophobicity, which can ef
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Yang, X., T. C. Ong, V. K. Michaelis, et al. "Formation of organic molecular nanocrystals under rigid confinement with analysis by solid state NMR." CrystEngComm 16, no. 39 (2014): 9345–52. http://dx.doi.org/10.1039/c4ce01087f.

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Deng, Shi Qiang, P. Rosso, Lin Ye, and Klaus Friedrich. "Interlaminar Fracture of CF/EP Composites Modified with Nano-Silica." Solid State Phenomena 121-123 (March 2007): 1403–6. http://dx.doi.org/10.4028/www.scientific.net/ssp.121-123.1403.

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Fracture toughness and other mechanical properties of epoxies modified with nano-slica particles were measured to elaborate effects of nano-additives on fracture behaviour of the modified epoxies. Interlaminar fracture behaviours of the nano-silica modified CF/EP composites were subsequently investigated by conducting Mode-I and Mode-II interlaminar fracture toughness tests as well as transverse tension tests. It was found that the fracture toughness of the nano-silica modified epoxies and the interlaminar fracture toughness of nano-silica modified CF/EP composites have been increased signific
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38

Kumar, Kakara S. J., M. V. Seshagiri Rao, V. Srinivasa Reddy, and S. Shrihari. "Performance evaluation of nano-silica concrete." E3S Web of Conferences 184 (2020): 01076. http://dx.doi.org/10.1051/e3sconf/202018401076.

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In this paper, the study of the influence of nano-silica (nano-SiO2) on the properties of the interface between CSH gel and cement particles and its effect on nano-mechanical properties of the products at the interface zone was examined. In this paper M50 grade SCC mixes were developed using 5% micro-silica and various percentages of 0.5%, 1.0% and 1.5% nano-SiO2. For 1.0% nano-SiO2 addition to M50 grade SCC mix, the compressive strength is maximum. Similarly concrete quality using non-destructive techniques, water absorbtion capacity and porosity are also assessed.
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Vijayalakshmi, K. A., and M. Vimala. "Impact of non-thermal plasma on SiO2 nano particles synthesized by rice husk." Digest Journal of Nanomaterials and Biostructures 17, no. 3 (2022): 1073–78. http://dx.doi.org/10.15251/djnb.2022.173.1073.

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Silicon dioxide (SiO2) is the most plentiful mineral in the world. Plants are the basis of this mineral. In recent periods, with the development of nanotechnology, silica nano particles have been establish new applications in solar cell. Rice husk and straw are rich causes of silica. In this study, amorphous silica nano particles were made from RH by chemical reduction method, and the surface of the material is improved by using DC glow discharge plasma. The synthesized samples were characterized by FTIR,XRD,EDAX,UV , FESEM and the results of both plasma treated and untreated samples were comp
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Zarehparvar-Shoja, Mahsa, and Hamid Eskandari-Naddaf. "Optimizing Compressive Strength of Micro- and Nano-silica Concrete by Statistical Method." Civil Engineering Journal 3, no. 11 (2017): 1084. http://dx.doi.org/10.28991/cej-030939.

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In recent years, the use of nano-particles to improve the properties of concrete has created a new perspective on concrete technology. Studies in this field indicate improved concrete properties and higher strength by adding nano and micro silica particles to concrete mixes. In this regard, 12 mixing designs with different amounts of these admixtures with three types of cement strength classes (525,425,325) and 36 cubic samples (10 × 10 × 10) were designed and tested to measure compressive strength, of which we have only used 6 mixing plans in this research. The purpose of this research is to
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He, Jian Yun, Jin Ping Xiong, and Bing Qian Xia. "UV-Curable Organic-Inorganic Hybrid Films Based on Epoxynorbornene Linseed Oils." Advanced Materials Research 217-218 (March 2011): 294–99. http://dx.doi.org/10.4028/www.scientific.net/amr.217-218.294.

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Epoxynorbornene linseed oil (ENLO) is a new kind of epoxide from renewable sources. An UV-curable organic/inorganic hybrid films using epoxynorbornene linseed oils (ENLO) and surface treated nano-silica were formulated. The mechanical properties，thermal properties and coating properties of the ENLO /silica coatings were evaluated as the function of nano-silica content. The results indicated that after incorporating the nano-silica, the strength, modulus and glass transition temperature of the hybrid films enhanced, while the elongation at break decreased. The nano-silica also improved the hybr
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Msebawi, Muntadher Sabah, Zulkiflle Leman, Shazarel Shamsudin, et al. "The Effects of CuO and SiO2 on Aluminum AA6061 Hybrid Nanocomposite as Reinforcements: A Concise Review." Coatings 11, no. 8 (2021): 972. http://dx.doi.org/10.3390/coatings11080972.

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Hybrid composites are obtained by embedding multiple micro and nano reinforcements into the matrix materials. These hybrid composites are helpful to obtain the useful properties of matrix and reinforcement materials. Aluminum matrix is one the most common matrix materials due to its excellent thermal and electrical properties. This review covers various aspects of nanoparticle-reinforced Al hybrid composites. Solid-state recycling of Al only consumes around 5% of the energy utilized in the conventional extraction and recycling methods. This review revolves around the induction of silica and co
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Song, Xinjiang, Haibo Xu, Deqin Zhou, et al. "Mechanical Performance and Microscopic Mechanism of Coastal Cemented Soil Modified by Iron Tailings and Nano Silica." Crystals 11, no. 11 (2021): 1331. http://dx.doi.org/10.3390/cryst11111331.

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In order to explore the effect of composite materials on the mechanical properties of coastal cement soil, cement soil samples with different iron tailings and nano silica contents were prepared, and unconfined compression and scanning electron microscope tests were carried out. The results show that: (1) The compressive strength of cement soil containing a small amount of iron tailings is improved, and the optimum content of iron tailings is 20%. (2) Nano silica can significantly improve the mechanical properties of iron tailings and cement soil (TCS). When the content of nano silica is 0.5%,
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Jiang, Yu Ling, Jin Jing Guo, and Hui Zhao. "Preparation and Cavilation Erosion Resistance of High Strength Nanocoating Cylinder Liner." Nano Hybrids and Composites 34 (February 23, 2022): 61–67. http://dx.doi.org/10.4028/p-y7gdd5.

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Using ammonium persulfate as an oxidant and nano-silica as dispersing medium,o-toluidine was oxidized to form a core-shell structure poly (o-toluidine)/nano-SiO2 particle. Investigation of particle yield by ICP-AES method, the adhesion method was used to study the adhesion between coating and cylinder liner. The cavitation resistance of the coating cylinder was studied by the vibration gas cavitation method. The results showed that poly(o-toluidine) was uniformly coated around the nano-silica particles to which forms stable poly (o-toluidine)/nano-SiO2 with core-shell structure, when m(SiO2):m
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Frounchi, M., R. P. Burford, and R. P. Chaplin. "Silica nano-composites of Allyl Diglycol Carbonate Resin." Engineering Plastics 2, no. 2 (1994): 147823919400200. http://dx.doi.org/10.1177/147823919400200201.

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Composites of poly allyldiglycolcarbonate (ADC) and nano-sized silica particles were investigated in search of an alternative method to improve the fracture toughness of ADC resin. Transmission electron microscope studies revealed relatively uniform dispersion of silica particles in the resin. Dynamic mechanical analysis measurements indicated that an increase in the glass transition temperature of ADC resin was also accompanied by a higher flexure modulus. A small but significant increase in the fracture toughness of the composites was also observed. The fracture surfaces studied by scanning
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Frounchi, M., R. P. Burford, and R. P. Chaplin. "Silica nano-composites of Allyl Diglycol Carbonate Resin." Polymers and Polymer Composites 2, no. 2 (1994): 77–82. http://dx.doi.org/10.1177/096739119400200201.

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Composites of poly allyldiglycolcarbonate (ADC) and nano-sized silica particles were investigated in search of an alternative method to improve the fracture toughness of ADC resin. Transmission electron microscope studies revealed relatively uniform dispersion of silica particles in the resin. Dynamic mechanical analysis measurements indicated that an increase in the glass transition temperature of ADC resin was also accompanied by a higher flexure modulus. A small but significant increase in the fracture toughness of the composites was also observed. The fracture surfaces studied by scanning
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Siejka-Kulczyk, Joanna, Joanna Mystkowska, Małgorzata Lewandowska, Jan R. Dabrowski, and Krzysztof Jan Kurzydlowski. "The Influence of Nano-Silica on the Wear Resistance of Ceramic – Polymer Composites Intended for Dental Fillings." Solid State Phenomena 151 (April 2009): 135–38. http://dx.doi.org/10.4028/www.scientific.net/ssp.151.135.

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Ceramic – polymer composites based on acrylic (bis–GMA) and urethane – methacrylate (UM) resins with a 60 % total volume fraction of filler consisting of micro particles of glass and nano-particles of silica were fabricated. The nano-silica contents were: 0, 10, 20 vol. %. The composite samples were subjected to wear tests using an occlusion simulator tester which applies reciprocating movement and cyclic loading on the test material. This method of testing provides some similarity to the masticatory pattern occurring in the mouth during eating. The enamel of a human tooth was used as a counte
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Hwang, Ha Soo, Duck Soo Yuk, So Hee Ko, and In Park. "Synthesis of Superhydrophobic Raspberry-Like Polymethylmethacrylate/Silica Core/Shell Particles." Advanced Materials Research 93-94 (January 2010): 27–30. http://dx.doi.org/10.4028/www.scientific.net/amr.93-94.27.

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Silica-coated raspberry-like polymeric particles were synthesized based on the cationic colloidal particles which were prepared by soap-free emulsion polymerization of methylmethacrylate (MMA) in the presence of a cationic monomer, methacryloxyethyltrimethyl ammonium chloride (MOTAC) using azobis(isobutylamidine)hydrochloride (AIBA) as an initiator. The Stöber method has been adopted to coat silica on the surface of these cationic particles. Negatively charged Silica precursors were rapidly hydrolyzed onto the cationic surfaces of colloidal particles. The resulted polymethylmethacrylate-silica
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Tao, Chengcheng, and Mehrdad Massoudi. "On the Flow of a Cement Suspension: The Effects of Nano-Silica and Fly Ash Particles." Materials 17, no. 7 (2024): 1504. http://dx.doi.org/10.3390/ma17071504.

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Additives such as nano-silica and fly ash are widely used in cement and concrete materials to improve the rheology of fresh cement and concrete and the performance of hardened materials and increase the sustainability of the cement and concrete industry by reducing the usage of Portland cement. Therefore, it is important to study the effect of these additives on the rheological behavior of fresh cement. In this paper, we study the pulsating Poiseuille flow of fresh cement in a horizontal pipe by considering two different additives and when they are combined (nano-silica, fly ash, combined nano
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Ajay, Kumar, and Kumar Sumit. "A Literature Survey on Impact of Nano Silica Mixing Methods on Recycled Aggregate Concrete Properties." Pioneer: Journal of Advanced Research and Scientific Progress 2, no. 8 (2023): 47–55. https://doi.org/10.5281/zenodo.8241450.

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This literature survey examines the impact of different nano silica mixing methods on the properties of recycled aggregate concrete. With the increasing demand for sustainable construction materials, the utilization of recycled aggregates in concrete production has gained significant attention. However, the use of recycled aggregates can lead to lower mechanical properties and durability issues in concrete. To address these concerns, researchers have explored the incorporation of nano silica as a supplementary material in recycled aggregate concrete. Nano silica, with its unique properties suc
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