摘要
为了研究STF-柔性复合材料的防弹性能和冲击耗能模式,首先使用纯Kevlar织物和STF的分散体系按照一定的工艺复合制备成STF-柔性复合材料,然后采用万能材料试验机对其进行拉伸性能测试,并借助气控高速发射装置分别对不同SiO2固含量以及不同铺层角度的STF-柔性复合材料进行防弹性能测试,以单位面积吸收的能量来表征其防弹性能。结果表明:万能材料试验机低速作用时,纯Kevlar织物和STF-柔性复合材料断裂强力基本一致,说明STF的黏度不会剧烈增加而影响人们的活动;随着SiO2固含量由0增加到45%,单位面积吸收能量由78.8J·m2/kg增加到87.4J·m2/kg,说明STF-柔性复合材料的防弹效果变佳;铺层角度对防弹性能的影响由优到劣的顺序为45°、90°、0°。
To study the bulletproof property and impact energy consumption mode of STF-flexible composites ,pure Kevlar fabric and STF dispersion system are used to prepare the STF-flexible composites according to certain technology firstly .Then ,the universal material testing machine is used to test tensile property .With the help of a pneumatic high-speed launchers ,the bulletproof property of STF-flexible composites with different SiO2 solid content and different layering angles is tested .The bulletproof proper-ty is expressed with the energy absorbed pre unit area .The results show that when universal material tes-ting machine was at a low speed ,breaking strength of pure Kevlar fabric and STF-flexible composites is＆amp;nbsp;basically consistent .This indicates that the viscosity of STF will not sharply increase or influence people＇s activities .With the increase in SiO2 content from 0 to 45% ,the absorbed energy per unit area increases to 87 .4 J · m2/kg from 78 .8 J · m2/kg .This means the bulletproof property of STF-flexible composites be-comes better .T he descending order of the influences of the layering angles on bulletproof property is as follow s ：45° ,90° and 0° .
出处
《浙江理工大学学报（自然科学版）》
2014年第2期127-132,共6页
Journal of Zhejiang Sci-Tech University(Natural Sciences)
基金
浙江省国际科技合作专项(合作研究)项目(2012C24013)
关键词
复合材料
剪切增稠液体
防弹性能
耗能模式
composite
shear thickening fluid
ballistic property
energy consumption mode
