聚四氟乙烯原位纤维化对TPEE/PTFE复合材料发泡行为的影响  

Effect of polytetrafluoroethylene fibrillation on the foaming behavior of TPEE/PTFE composites

作　　者：李娟 王亚桥 LI Juan;WANG Yaqiao(Foreign Environmental Cooperation Center,Ministry of Ecology and Environment,Beijing 100048,China;School of Materials Science and Engineering,Fujian Universtiy of Technology,Fuzhou 350108,China)

机构地区：[1]国家生态环境部,对外合作与交流中心,北京100048 [2]福建工程学院,材料科学与工程学院,福州350108

出　　处：《中国塑料》2022年第12期38-43,共6页China Plastics

摘　　要：通过熔融共混法研究了不同加工工艺对聚四氟乙烯(PTFE)纤维化的影响,制备了热塑性聚酯弹性体(TPEE)/PTFE纳米纤维复合材料。在此基础上,研究了PTFE含量对TPEE的结晶行为、流变行为以及发泡行为的影响。结果表明,PTFE纤维可以促进TPEE结晶,改善TPEE的流变性能。纳米纤维的高比表面积为泡孔成核提供了大量成核位点,有效提高了泡孔密度,降低了泡孔尺寸;当PTFE含量为2份时,制备了平均泡孔直径为3.2μm,平均泡孔密度为3.11×10^(10)个/cm^(3)的复合材料泡沫。The TPEE/PTFE nanofiber composites were prepared by means of a melt blending method,and the effect of different processing technologies on PTFE fibrosis was investigated.Furthermore,the effect of PTFE content on the crystallization behavior,rheological behavior and foaming behavior of TPEE were studied.The results indicated that PT⁃FE fiber promoted the crystallization of TPEE and improved the rheological properties of TPEE.The high specific sur⁃face area of nanofibers can provide a large number of nucleation sites for cell nucleation,effectively improving the cell density and reducing the cell size.The TPEE/PTFE composite foam obtained an average cell size of 3.2μm and a cell density of 3.11×10^(10) cells/cm^(3) at a PTFE content of 2 phr.

关 键 词：热塑性弹性体 聚四氟乙烯 纳米纤维 泡沫材料 

分 类 号：TQ325.4[化学工程—合成树脂塑料工业]