聚丙烯/聚四氟乙烯纤维复合材料力学性能及发泡行为研究  

Study on Mechanical Properties and Foaming Behavior of PP/PTFE Fiber Composites

作　　者：周海 石阳阳 李荣群 夏洋 李飞 

机构地区：[1]合肥会通新材料有限公司

出　　处：《塑料科技》2018年第2期25-29,共5页Plastics Science and Technology

摘　　要：将聚四氟乙烯纤维和相容剂加入聚丙烯中,在二次开模条件下注塑成型制备出聚丙烯/聚四氟乙烯纤维微发泡复合材料,研究了聚四氟乙烯纤维用量对复合材料力学性能、耐热性及发泡行为的影响。结果表明：当聚四氟乙烯纤维用量为2%时,复合材料的拉伸强度提高了13%,弯曲模量提高了16%;聚丙烯微发泡复合材料具有完美的泡孔结构,其泡孔平均直径为71μm,泡孔密度为1.26×10^6个/cm^3。The polytetrafluoroethylene（PTFE） fiber and compatilizer was added into polypropylene（PP）. The microcellular foamed PP/PTFE fiber composites were prepared by injection method under the condition of twice-open mold. The effects of the amount of PTFE fiber on the mechanical properties, heat resistance and foaming behavior of the composites were studied. The results show that： when the amount of PTFE fiber is 2%, the tensile strength of the composite is increased by 13%, and the flexural modulus is increased by 16%. The PP microfoam composite has a perfect pore structure. The average diameter of the bubble hole is 71 μm, and the density of the bubble hole is 1.26×10~6 cell/cm^3.

关 键 词：聚丙烯 聚四氟乙烯纤维 化学微孔发泡 二次开模 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]