固化缺陷对碳纤维平纹复合材料剪切性能的影响

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中图分类号：TB332 文献标志码：A DOI：10.13338/j.issn.1674-649x.2025.03.007

The influence of curing defects on the shear properties of carbon fiber plain weave composites

LIU Tao 1 ，ZHU Ruixing1 ，GAO Yuxuan¹ ，FANG Zhi1 ，CHEN Yue²，LEI Xingyu³

（1.School of Textile Science and Engineering，Xi'an Polytechnic University，Xi'an 710048，China; 2. North Changlong New Material Technology Co.Ltd.，Xi'an 7101O1，China; 3.Shaanxi Kong Tian Rui Zhi De New Material Technology Co. Ltd.，Xianyang 7137O2，Shaanxi，China）

Abstract In order to analyze the mechanism and influencing factors of curing defects （e.g.dry fibers and resin bubbles） in carbon fiber composites，three different defect ratios of carbon fiber plain weave composites（CFPWC） were prepared by controlling the resin infiltration time （2，4，6 h） in the curing process.A shear model for CFPWC with random pore defects was proposed and established. The results show that the defect distribution of CFPWC is mainly concentrated in the resin area，and the overall mechanical properties are improved with the increase of infiltration time in the curing process.This is manifested in the shear strength and modulus of the composites being 77.1% and 85.6% of the maximum infiltration time （6h ）at the minimum infiltration time （ 2h） . At the same time，the defective carbon fiber unit cell shear model established can fit well with experimental results，providing a more convenient unit cell model prediction mode for the prediction of CFPWC mechanical properties..

Keywordscarbon fiber plain weave composites（CFPWC）;resin infiltration time; resin/fiber defect rate;shear mechanical properties;shear failure mode

0引言

环氧树脂基碳纤维平纹复合材料以其轻质高强且易生产的特性，成为碳纤维复合材料应用市场中最为流行的碳纤维复合材料，被广泛应用在航空航天、交通工具及体育用品等多个领域[1-4]。（剩余12162字）