Experimental study on mechanical properties of modified polytetrafluoroethylene  

改性聚四氟乙烯材料的力学性能实验研究（英文）

作　　者：李运禄 尹建平[1] 刘同鑫[2] 

机构地区：[1]中北大学机电工程学院,山西太原030051 [2]空军工程大学航空航天工程学院,陕西西安710038

出　　处：《Journal of Measurement Science and Instrumentation》2015年第4期390-395,共6页测试科学与仪器（英文版）

基　　金：Graduate Education Innovation Project of Shanxi Province(No.2015SY59)

摘　　要：In order to study the mechanical properties of modified low-density polytetrafluoroethylene （PTFE）, universal testing machine is used for quasi-static tension and compression tests and Hopkinson bar test is for mechanical property under impact load. The mechanical properties of the samples with different length-diameter ratios under different impact loads are analyzed and dynamic response characteristics of the modified PTFE at different impact speeds are studied. The results show that, adding the copper powder in PTFE material can increase not only the tensile strength and elongation of the PTFE material sig- nificantly, but also the compressive strength; with the increase of strain rate, the yield strength of modified PTFE increases.

关 键 词：mechanical properties modified polytetrafluoroethylene （PTFE） split Hopkinson pressure bar （SHPB） 

分 类 号：TQ325.4[化学工程—合成树脂塑料工业]