INVESTIGATION OF MECHANISMS OF DESTRUCTION OF COMPOSITE MATERIALS AFTER EXPOSURE TO CHEMICALLY AGGRESSIVE MEDIA
UHFHDO
DOI:
https://doi.org/10.25712/ASTU.2072-8921.2026.01.037Keywords:
chemical resistance, aging, polymer composites, amine hardeners, chemical resistance coefficients, anhydride hardeners, macro degradationAbstract
Studies of the mechanisms of destruction after mechanical compression testing of control and pre-thermochemically aged ring-shaped basalt plastics made on the basis of reinforcing filler (roving) have been carried out NRB 19-1200-KV-42 and two different binders: the first with an amine type hardener ED-20+Ethal-23X, and the second with an anhydride binder EDI. Using an optical electron microscope, the surface of the samples in the area of their destruction was studied and the main mechanisms for reducing the strength characteristics of FRP were identified, which consist in delamination of fibers from the polymer matrix, its cracking, propagation of cracks in the structure of the composite material, etc..
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Copyright (c) 2026 Egor G. Sakoshev, Aleksey N. Blaznov, Nikolay V. Bychin
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