A Comparative Analysis of the Mechanical Properties and Microstructure of Three-Component Epoxy Polymers and Fiberglass Composites Obtained by Thermal and Microwave Heat Treatment
E. V. Matveev, V. V. Berestov, A. I. Gaidar, A. A. Veveris
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引用次数: 0
Abstract
The effect of ultrahigh frequency (microwave) curing on the microstructure and mechanical properties of three-component epoxy resins (ER) and glass fiber reinforced polymer (GFRP) has been studied. A comparative analysis of the manufactured samples of ER and GFRP cured by both traditional thermal and microwave methods was carried out. The optimal parameters of the microwave curing process for ER and GFRP were determined, which made it possible to obtain samples with high strength properties under standard tensile and bending tests. Comparative fractographic and microstructural studies of transverse fracture surfaces for ER samples cured by thermal and microwave methods were carried out using scanning electron microscopy (SEM). It has been established that the curing of ER by the microwave method leads to an increase in the size of globules and the number of pores in the material, a more pronounced local plastic deformation during the destruction of the sample, and to a greater variation in the ratio of the propagation velocities of the main and secondary cracks. Comparative studies of the microstructure of the cross-section surfaces and longitudinal cleavage surfaces were also carried out for GFRP samples cured by thermal and microwave methods. It was found that for GFRP samples cured by the microwave method the fracture during longitudinal cleavage is mainly cohesive, caused by the propagation of a crack through the matrix material.
期刊介绍:
Inorganic Materials: Applied Research contains translations of research articles devoted to applied aspects of inorganic materials. Best articles are selected from four Russian periodicals: Materialovedenie, Perspektivnye Materialy, Fizika i Khimiya Obrabotki Materialov, and Voprosy Materialovedeniya and translated into English. The journal reports recent achievements in materials science: physical and chemical bases of materials science; effects of synergism in composite materials; computer simulations; creation of new materials (including carbon-based materials and ceramics, semiconductors, superconductors, composite materials, polymers, materials for nuclear engineering, materials for aircraft and space engineering, materials for quantum electronics, materials for electronics and optoelectronics, materials for nuclear and thermonuclear power engineering, radiation-hardened materials, materials for use in medicine, etc.); analytical techniques; structure–property relationships; nanostructures and nanotechnologies; advanced technologies; use of hydrogen in structural materials; and economic and environmental issues. The journal also considers engineering issues of materials processing with plasma, high-gradient crystallization, laser technology, and ultrasonic technology. Currently the journal does not accept direct submissions, but submissions to one of the source journals is possible.