热塑性基体Kevlar/UHMWPE混杂复合材料弹道侵彻损伤
Ballistic Penetration Damage of Hybrid Thermoplastic Composites Reinforced with Kevlar and UHMWPE Fabrics
李智勇 1薛有松 1孙宝忠 1顾伯洪1
作者信息
- 1. 东华大学纺织学院,上海市现代纺织前沿科学研究基地,上海 201620
- 折叠
摘要
聚合物基体类型是影响纤维混杂复合材料弹道性能的关键因素.该文以热塑性聚氨酯为基体,制备了具有不同混杂结构的Kevlar和超高分子量聚乙烯(UHMWPE)复合材料.使用气枪冲击系统发射标准模拟破片弹体,对混杂复合材料进行弹道冲击试验.分析了纤维组合和混杂结构对混杂复合材料弹道性能的影响,并研究了两种比能量吸收(单位面密度能量吸收和单位厚度能量吸收)的变化.研究发现,聚氨酯基混杂复合材料的主要损伤模式为纤维断裂、基体损伤、纤维抽拔和层间脱层.弹击瞬时变形不能作为评价靶板弹道性能的参考指标.聚氨酯基混杂复合材料的能量吸收过程呈现非线性规律,混杂方式影响材料的比能量吸收.
Abstract
Polymer matrix types of fiber hybrid composites are key factors to improve ballistic impact damage tolerances.Here we report ballistic penetration damages of Kevlar/ultra-high molecular weight polyethylene(UHMWPE)hybrid composites with thermoplastic polyurethane(PU)matrix.The hybrid composites were penetrated by fragment-simulating projectiles(FSPs)using an air gun impact system.The effects of stacking sequences on the ballistic performance of hybrid composites were analyzed.Two types of specific energy absorption(the energy absorption per unit area density and the energy absorption per unit thickness)were investigated.It was found that the main damage modes of PU hybrid composites were fiber breakage,matrix damage,fiber pullout and interlayer delamination.The instantaneous deformation could not be used as a reference index for evaluating the ballistic performance of the target plate.The energy absorption process of the PU hybrid composites showed a nonlinear pattern.The hybrid structure affected the specific energy absorption of the materials.
关键词
聚氨酯/Kevlar/超高分子量聚乙烯(UHMWPE)/混杂复合材料/弹道冲击/比能量吸收Key words
polyurethane(PU)/Kevlar/ultra-high molecular weight polyethylene(UHMWPE)/hybrid composite/ballistic impact/specific energy absorption引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据