不同尺寸氧化铝对聚丙烯复合材料性能影响及数值模拟  

Effects of Alumina with Different Sizes on Properties of Polypropylene Composites and Numerical Simulation

作　　者：陈厚振 王艳芝 张艳丽[2] 南钰 张振利 CHEN Hou-zhen;WANG Yan-zhi;ZHANG Yan-li;NAN Yu;ZHANG Zhen-li(School of Textile,Zhongyuan University of Technology,Zhengzhou 451191,China;School of Materials and Chemical Engineering,Zhongyuan University of Technology,Zhengzhou 451191,China;Kaifeng Power Supply Company,State Grid Henan Electric Power Company,Kaifeng 475000,China;Henan Da Zhang Filtration Equipment Co.,Ltd.,Xuchang 461000,China)

机构地区：[1]中原工学院纺织学院,河南郑州451191 [2]中原工学院材料与化工学院,河南郑州451191 [3]国网河南省电力公司开封供电公司,河南开封475000 [4]河南大张过滤设备有限公司,河南许昌461000

出　　处：《塑料科技》2022年第11期24-29,共6页Plastics Science and Technology

基　　金：河南省科技创新优秀团队项目(豫科人组[2017]9号);2021年度河南省高等学校重点科研项目(21A430047);国网河南省电力公司科研项目(521790200018)。

摘　　要：聚丙烯(PP)与不同粒径、不同质量分数的Al_(2)O_(3)熔融共混,制备聚丙烯/氧化铝(PP/Al_(2)O_(3))复合材料,对PP/Al_(2)O_(3)进行力学性能和热学性能测试及有限元模拟分析。结果表明:与添加20μm和5μm Al_(2)O_(3)的复合材料相比,不同填充量下45μm Al_(2)O_(3)填充的复合材料均具有较高的结晶温度,且熔限相对较窄。粒径45μm的Al_(2)O_(3)填充量为25%时,复合材料的导热系数和弯曲模量较纯PP分别提高44.26%和68.74%。模拟分析表明:粒径45μm的Al_(2)O_(3)填充量高于50%时,复合材料更易形成“海-岛”结构的导热通路,从而有效提高其导热性能。Polypropylene/alumina(PP/Al_(2)O_(3)) composites were prepared by melt blending of polypropylene(PP) with different particle sizes and different mass fractions of Al_(2)O_(3).The mechanical properties,thermal properties and finite element simulation analysis of PP/Al_(2)O_(3)were tested.The results show that compared with the composites with 20 μm and5 μm Al_(2)O_(3),the composites filled with 45 μm Al_(2)O_(3)at different filling amounts have higher crystallization temperature and narrower melting limit.When the filling amount of Al_(2)O_(3)with particle size of 45 μm is 25%,the thermal conductivity and flexural modulus of the composites are 44.26% and 68.74% higher than those of pure PP,respectively.The simulation analysis shows that when the filling amount of Al_(2)O_(3)with particle size of 45 μm is higher than 50%,the composite material is more likely to form a ’sea-island’ structure heat conduction path,thus effectively improving its thermal conductivity.

关 键 词：氧化铝 聚丙烯 导热系数 力学性能 有限元模拟 

分 类 号：TQ332[化学工程—橡胶工业]