Investigating of epoxy nanocomposites structure and properties that contain both pristine and aminosilane-treated silicon carbide (SiC) particles
Mostovoy A. Bekeshev A. Shcherbakov A. Apendina A. Orynbassar R. Svitkina V. Lopukhova M.
July 2024SAGE Publications Ltd
Journal of Composite Materials
2024#58Issue 171907 - 1918 pp.
This article presents a methodology for functionalization of silicon carbide (SiC) through chemical modification using γ-aminopropyltriethoxysilane (APTES) and its subsequent dispersion in an epoxy composition. The research revealed that functionalizing SiC particles with γ-aminopropyltriethoxysilane (SiC(APTES)) enhanced their chemical compatibility with the epoxy composition, facilitating the dispersion of SiC particles. Furthermore, it was observed that the functionalization of the filler had a profound impact on the structure, curing kinetics, and physical and mechanical properties of epoxy nanocomposites. The addition of SiC(APTES) into the epoxy composition resulted in a significant reinforcement of the material. Specifically, the flexural stress and flexural modulus of elasticity increased by 179% and 74%, respectively, while the impact strength experienced a remarkable improvement of 462%. Additionally, the tensile strength and tensile modulus of elasticity increased by 83% and 70%, respectively, compared to the epoxy composite without SiC. The application of SiC(APTES) also played a crucial role in initiating the polymerization process through the involvement of reactive amino groups, leading to a reduction in the initial curing temperature and an amplification of the thermal effects of the polymerization reaction. Moreover, the presence of functionalized SiC significantly influenced the structure of the epoxy composite, thereby contributing to its enhanced strength. In summary, the inclusion of SiC in the epoxy composition not only bolstered the material but also improved its thermal stability.
Epoxy oligomer , functionalization , modification , nanofiller , physicochemical and mechanical characteristics , silicon carbide , γ-aminopropyltriethoxysilane
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Department “Natural and Mathematical Sciences”, Yuri Gagarin State Technical University of Saratov, Saratov, Russian Federation
Laboratory of Polymer Composites, K. Zhubanov Aktobe Regional State University, Aktobe, Kazakhstan
Laboratory of Support and Maintenance of the Educational Process, Yuri Gagarin State Technical University of Saratov, Saratov, Russian Federation
Department “Chemistry and Chemical Technology”, K. Zhubanov Aktobe Regional State University, Aktobe, Kazakhstan
Department of Technology and Equipment for Chemical, Oil and Gas and Food Industries, Yuri Gagarin State Technical University of Saratov, Saratov, Russian Federation
Department of Economics and Humanitarian Sciences, Yuri Gagarin State Technical University of Saratov, Saratov, Russian Federation
Department “Natural and Mathematical Sciences”
Laboratory of Polymer Composites
Laboratory of Support and Maintenance of the Educational Process
Department “Chemistry and Chemical Technology”
Department of Technology and Equipment for Chemical
Department of Economics and Humanitarian Sciences
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