Modeling of the Modification Process of an Epoxy Basalt-Filled Oligomer in Traveling Wave Microwave Chambers
Bekeshev A. Vasinkina E. Kalganova S. Trigorly S. Kadykova Y. Mostovoy A. Shcherbakov A. Lopukhova M. Zhanturina N.
September 2023Multidisciplinary Digital Publishing Institute (MDPI)
Journal of Composites Science
2023#7Issue 9
This paper presents modeling data to select the optimal industrial unit for the microwave modification of an epoxy basalt-filled oligomer (EBO) at electric field strength E of an electromagnetic wave equal to 11.9 × 103 V/m and a uniform distribution of the temperature field over the entire volume of the modified object. A mathematical description of the electrodynamic and thermal processes occurring in the object under consideration subjected to microwave exposure includes the Helmholtz equation for the electric field strength vector and the heat conduction equation. The joint solution of this problem in a three-dimensional formulation is based on the use of the finite element method, which in this work was implemented in the COMSOL Multiphysics® 6.1 software environment. According to the modeling results, the use of microwave chambers with a traveling wave of a waveguide type is inefficient because the required value of the electric field strength E is not achieved, while the modeled microwave chamber with a traveling wave on a quasi-coaxial waveguide makes it possible to achieve the required value of the electric field strength E and uniform distribution of the temperature field over the entire volume of the modified object by reducing the generated power for the modification of an EBO from 400 W up to 300 W. Optimal parameters for modifying an epoxy basalt-filled oligomer in the microwave electromagnetic field in the working chamber with a traveling wave on a quasi-coaxial waveguide have been developed, which provide a uniform microwave modification of an EBO with a microwave installation capacity of 11.6 kg/h. A sketch of an industrial microwave working chamber has been developed, which provides a mode of the uniform modification of the oligomer at electric field strength E = 12.3 × 103 V/m. The proposed microwave chamber with a traveling wave on a quasi-coaxial waveguide can be replicated for the microwave modification of filled oligomers of various chemical compositions.
electric field strength , epoxy oligomer , generated power , microwave modification , modeling , quasi-coaxial waveguide
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Laboratory of Polymer Composites, K. Zhubanov Aktobe Regional State University, Aliya Moldagulova Avenue 34, Aktobe, 030000, Kazakhstan
Joint Stock Company Research and Production Enterprise “Contact”, St. Spitsina, 1, Saratov, 410033, Russian Federation
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 Economics and Humanitarian Sciences, Yuri Gagarin State Technical University of Saratov, Polytechnichskaya St., 77, Saratov, 410054, Russian Federation
Department “Physics”, K. Zhubanov Aktobe Regional State University, Aliya Moldagulova Avenue 34, Aktobe, 030000, Kazakhstan
Laboratory of Polymer Composites
Joint Stock Company Research and Production Enterprise “Contact”
Laboratory of Modern Methods of Research of Functional Materials and Systems
Laboratory of Support and Maintenance of the Educational Process
Department of Economics and Humanitarian Sciences
Department “Physics”
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