摘要
以芳纶/玻纤层内混杂经编双轴向织物为增强体、环氧树脂为基体,基于真空辅助成型工艺制作复合材料,从芳纶/玻纤层内混杂经编双轴向织物的铺层角度、铺层厚度和铺层顺序3个方面探究其对弯曲性能和低速冲击性能的影响。结果表明:铺层角度为[(0°)/(-45°)/(90°)/(45°)]s时,弯曲强度和低速冲击载荷最大,分别为197.1 MPa和14259.4 N;铺层层数增加,会在一定程度上增强材料的弯曲性能和低速冲击性能,随着层数的增加,厚度增加,弯曲强度反而变差;在进行弯曲测试和低速冲击测试时,靠近加载方向的纤维选择0°/90°更好,且每层织物的角度对称堆叠越均匀,弯曲和冲击性能越好。证实了在一定程度上可以通过合适的铺层设计来获得满足工况条件所需要的复合材料。
The aramid/glass fiber hybrid warp-knitted biaxial fabric is used as the reinforcement,and the epoxy resin is used as the matrix.Based on the vacuum-assisted molding process,the composite material is made.The influence of the ply angle,ply thickness and ply sequence of the aramid/glass fiber hybrid warp-knitted biaxial fabric on the bending performance and low-velocity impact performance is investigated.The results show that when the ply angle is[(0°)/(-45°)/(90°)/(45°)]s,the bending strength and low-velocity impact load are the largest,which are 197.1 MPa and 14259.4 N,respectively.The increase of the number of layers will enhance the bending performance and low-velocity impact performance of the material to a certain extent.With the increase of the number of layers,the thickness increases,and the bending strength becomes worse.In the bending test and low-velocity impact test,it is better to select 0°/90°for the fibers near the loading direction,and the more symmetrical the angle of each layer of fabric is,the better the performance is.It is confirmed that the composite materials needed to meet the working conditions can be obtained through appropriate ply design to a certain extent.
作者
王婷
蒋高明
杨美玲
李炳贤
WANG Ting;JIANG Gaoming;YANG Meiling;LI Bingxian(Engineering Research Center for Knitting Technology,Ministry of Education,Jiangnan University,Wuxi 214122,Jiangsu,China)
出处
《上海纺织科技》
2024年第7期18-23,共6页
Shanghai Textile Science & Technology
基金
江苏省自然科学青年基金项目(BK20221094)
中央高校基本科研业务费专项资金资助(JUSRP122003)。
关键词
增强材料
芳纶
玻纤
经编双轴向
铺层工艺
弯曲性能
低速冲击性能
reinforcement material
aromatic
glass fiber
warp knitting biaxial
ply process
bending performance
low speed impact performance
