Epoxy Composites Modified with Functionalized Aluminosilicate Microspheres from Thermal Power Plant Ash: Complex Improvements in the Mechanical and Thermal Properties
Mostovoy A. Shcherbakov A. Serikbayeva G. Lopukhova M. Svitkina V. Shanina Z. Bekeshev A.
June 2025Multidisciplinary Digital Publishing Institute (MDPI)
Polymers
2025#17Issue 12
In this paper, the effect of aluminosilicate microspheres (ASMs) from thermal power plant (TPP) ash on the properties of epoxy composites was studied. A method for modifying the ASMs’ surface using aminoacetic acid was developed to improve the adhesion at the polymer–filler interface. Complex analysis methods, including scanning electron microscopy, infrared spectroscopy, a thermogravimetric analysis, DSC, and DMA, showed that adding the optimal amount of ASMs significantly improved the physical and mechanical properties of the composites: the flexural strength increased by 112%, the elastic modulus by 198%, and the impact strength by 50%. Functionalization of the ASMs enhances their interaction with the matrix, providing the composites with the best strength and thermal stability indicators among the studied materials. The study of the curing kinetics showed the initiating effect of functionalized ASMs on the curing process of epoxy compositions, associated with the presence of active amino groups on the surface of the particles. The resulting composites demonstrate potential for application in structural and fire-resistant materials; have high-deformation and -strength characteristics; and facilitate the disposal of industrial waste.
aluminosilicate microspheres , epoxy composites , functionalization , industrial waste , mechanical properties , thermal stability
Text of the article Перейти на текст статьи
Laboratory of Modern Methods of Research of Functional Materials and Systems, Yuri Gagarin State Technical University of Saratov, Polytechnichskaya St., 77, Saratov, 410054, Russian Federation
Laboratory of Support and Maintenance of the Educational Process, Yuri Gagarin State Technical University of Saratov, Polytechnichskaya St., 77, Saratov, 410054, Russian Federation
Department of Physics, K. Zhubanov Aktobe Regional State University, Aliya Moldagulova Avenue 34, Aktobe, 030000, Kazakhstan
Department of Economics and Humanitarian Sciences, Yuri Gagarin State Technical University of Saratov, Polytechnichskaya St., 77, Saratov, 410054, Russian Federation
Department of Technology and Equipment for Chemical, Oil and Gas and Food Industries, Yuri Gagarin State Technical University of Saratov, Polytechnichskaya St., 77, Saratov, 410054, Russian Federation
Laboratory of Polymer Composites, K. Zhubanov Aktobe Regional State University, Aliya Moldagulova Avenue 34, Aktobe, 030000, Kazakhstan
Laboratory of Modern Methods of Research of Functional Materials and Systems
Laboratory of Support and Maintenance of the Educational Process
Department of Physics
Department of Economics and Humanitarian Sciences
Department of Technology and Equipment for Chemical
Laboratory of Polymer Composites
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026