三维间隔织物轻质复合材料的力学性能
Mechanical properties of lightweight 3D warp spacer composites
刘琪清 1张泽书 2丁鑫泰 1文秀君 1高彦涛1
作者信息
- 1. 上海工程技术大学纺织服装学院,上海 201620
- 2. 山东福凯新材料科技有限公司,山东枣庄 277100
- 折叠
摘要
将3D间隔织物与轻质聚氨酯相结合,制备出3D经编间隔织物复合材料.对不同基体密度与增强体规格的3D间隔织物复合材料进行三点弯曲测试,研究其结构参数对力与位移曲线的影响;并对其抗冲击性能进行评价,获取影响复合材料冲击防护性能的因素.结果表明:基体密度对三维间隔织物复合材料力学性能的影响十分显著,基体密度越大,3D经编间隔织物复合材料的弯曲应力和弯曲强度越大,抗弯曲能力也越强,而可塑性越差,柔韧性越差;冲击吸收的冲击力逐渐减少,导致复合材料的抗冲击恢复性越差.
Abstract
3D spacer fabrics are combined with lightweight polyurethane to prepare 3D warp knitted spacer fabric composites.The three-point bending test of 3D spacer fabric composites with different matrix densities and reinforcement specifications is carried out to study the influence of their structural parameters on force and displacement curves.And its impact resistance is evaluated,and the factors affecting the impact protection performance of composite materials are obtained.The results show that the matrix density affects the mechanical properties of the three-dimensional spacer fabric composite,and the greater the matrix density,the smaller the bending stress,the weaker the bending resistance,the lower the plasticity and the worse the flexibility of the 3D warp knitted spacer fabric composite.The absorbed impact force gradually decreases,resulting in poor impact recovery of the composite.
关键词
复合材料/3D间隔织物/聚氨酯基体/密度/弯曲性能/抗冲击性能Key words
composite material/3D spacer fabric/polyurethane matrix/density/bending property/impact resistant引用本文复制引用
基金项目
上海工程技术大学学生创新训练项目(CX2209009)
出版年
2024
NETL
NSTL
万方数据