Abstract

The effect of additional heat treatment at elevated temperatures on the physicomechanical characteristics of unidirectional epoxy organoplastics has been studied. It has been shown that long exposure (24 h) at temperatures of 120 and 180°C leads to a significant decrease in crack resistance, as well as in the bending and shear characteristics of the composites under study. Infrared spectroscopy has revealed a tendency towards the formation of carbonyl groups after holding at 120°C. Possible reasons for the observed changes are discussed.

中文翻译：

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基于环氧树脂的高温附加热处理对OFRPs物理力学性能的影响

摘要

研究了高温下附加热处理对单向环氧有机塑料物理机械特性的影响。研究表明，在120和180°C的温度下长时间暴露（24小时）会导致抗裂性以及所研究复合材料的弯曲和剪切特性显着降低。红外光谱显示在保持在120°C后有形成羰基的趋势。讨论了观察到的变化的可能原因。