Research on the effects of ultraviolet aging on the properties of carbon fiber reinforced fast curing epoxy composites

doi:10.19936/j.cnki.2096-8000.20220128.015

Abstract

Abstract: In this paper, the effects of long-term ultraviolet aging on the mechanical properties of carbon fiber reinforced epoxy composites were investigated by artificial accelerated aging test under ultraviolet light source. The properties of the composites, including tensile strength, compression strength, bending strength, apparent morphology, infrared spectrum and XPS, were systematically tested. The results show that the mechanical properties of the composites decreased in different degrees and the surface of the composites appeared defects or holes after long-term ultraviolet aging. These experiments indicate that long-term ultraviolet irradiation will break the chemical bonds of epoxy resin matrix and cause partial degradation of epoxy resin matrix, which will destroy the resin/fiber interfaces and eventually lead to material defects and the deterioration of mechanical properties.

Key words: carbon fiber reinforced composite, ultraviolet, aging, mechanical property

CLC Number:

TB332

JIANG Shi-cai, YAN Hong-chen, SHI Feng-hui, LI Shao-liang, ZHU Wen-kun. Research on the effects of ultraviolet aging on the properties of carbon fiber reinforced fast curing epoxy composites[J]. COMPOSITES SCIENCE AND ENGINEERING, 2022, 0(1): 98-103.

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