增强结构对聚合物基复合材料热氧化稳定性的影响：二维平纹编织复合材料和2.5D角联锁编织复合材料

Reinforced Structure Effect on Thermo-Oxidative Stability of Polymer-Matrix Composites: 2-D Plain Woven Composites and 2.5-D Angle-Interlock Woven Composites.

作者信息

Gao Xingzhong, Han Tiancong, Tang Bolin, Yi Jie, Cao Miao

机构信息

School of Textile Science and Engineering, Xi'an Polytechnic University, Xi'an 710048, China.

Key Laboratory of Functional Textile Material and Product, Xi'an Polytechnic University, Ministry of Education, Xi'an 710048, China.

出版信息

Polymers (Basel). 2022 Aug 24;14(17):3454. doi: 10.3390/polym14173454.

DOI:10.3390/polym14173454

PMID:36080533

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9459825/

Abstract

The thermo-oxidative stability of carbon fiber polymer matrix composites with different integral reinforced structures was investigated experimentally and numerically. Specimens of 2-D plain woven composites and 2.5-D angle-interlock woven composites were isothermally aged at 180 °C in hot air for various durations up to 32 days. The thermal oxidative ageing led to the degradation of the matrix and the fiber/matrix interface. The degradation mechanisms of the matrix were examined by ATR-FTIR and thermal analysis. The interface cracks caused by thermal oxidative ageing were sensitive to the reinforced structure. The thermo-oxidative stability of the two composites was numerically compared in terms of matrix shrinking and crack evolution and then experimentally validated by interlaminar shear tests.

摘要

对具有不同整体增强结构的碳纤维聚合物基复合材料的热氧化稳定性进行了实验和数值研究。二维平纹编织复合材料和2.5D角联锁编织复合材料试样在180°C的热空气中等温老化不同时间，最长达32天。热氧化老化导致基体和纤维/基体界面降解。通过衰减全反射傅里叶变换红外光谱（ATR-FTIR）和热分析研究了基体的降解机理。热氧化老化引起的界面裂纹对增强结构敏感。从基体收缩和裂纹扩展方面对两种复合材料的热氧化稳定性进行了数值比较，然后通过层间剪切试验进行了实验验证。