STF/abs稀释比例对STF/UHMWPE材料高速冲击性能的影响

Effect of the dilution ratio of STF/abs on the high-speed impact property of the STF/UHMWPE materials

研究了剪切增稠液(STF)不同稀释比对STF/UHMWPE材料抗高速冲击性能的影响。按照V(剪切增稠液)∶V(无水乙醇)(abs)=1∶1、1∶2、1∶3、1∶4对STF稀释,制备4组STF/UHMWPE材料靶样,利用扫描电镜(SEM)分别观察织物复合前后和材料断裂处纤维表面形态。利用高速冲击实验测试4组靶样的高速冲击性能。实验结果表明,剪切增稠行为发生在材料断裂处;剪切增稠液与无水乙醇体积比为1∶3的STF/UHMWPE材料高速冲击性能最好。

To explore the high-speed impact of STF composited with fabrics influenced by the dilution ratio of STF,STF was diluted by the absolute ethyl alcohol at the dilution volume ratios of 1∶1,1∶2,1∶3,1∶4.And then four groups of STF/UHMWPE material targets were prepared.Scanning electron microscope was used to observe the surface of fabrics before and after composited and watch the fibers of the broken fabric.High-speed tests were used to measure the high-speed impact property of STF/UHMWPE material targets.The results show that shear thickening behavior happens at the broken place of STF/UHMWPE materials.What's more,the STF/UHMWPE material targets whose dilution ratio was 1∶3have the best high-speed impact property.