混合粒径BN填充PP/PE复合材料的结构与性能  

Structure and Properties of PP/PE Composites Filled with Mixed Particle Size BN

作　　者：王艳芝 吴露露 岳献阳 张一飞 范惠玲 南钰 刘书锋 WANG Yanzhi;WU Lulu;YUE Xianyang;ZHANG Yifei;FAN Huiling;NAN Yu;LIU Shufeng(School of Textiles,Zhongyuan University of Technology,Zhengzhou 450007,China;Zhengzhou Hengtian Copper Company,Zhengzhou 451100,China;State Grid Henan Electric Power Company,Kaifeng 475000,China;Xinyang Defu Peng New Material Company Limited by Shares,Xinyang 464006,China)

机构地区：[1]中原工学院纺织学院,河南郑州450007 [2]郑州恒天铜业有限公司,河南郑州451100 [3]国网河南省电力公司开封供电公司,河南开封475000 [4]信阳市德福鹏新材料有限公司,河南信阳464006

出　　处：《塑料工业》2023年第12期118-124,共7页China Plastics Industry

基　　金：河南省教育厅自然科学重点研究项目(项目编号:23A430026);郑州市创新领军团队(郑政文[2022]117号)。

摘　　要：为改善聚合物基导热复合材料的导热性能,单一粒径填料填充复合材料存在的不足,因此,本文探究了混合粒径六方氮化硼(BN)掺杂聚丙烯(PP)/聚乙烯(PE)复合材料的结构、热学和力学性能。通过激光导热仪、熔融指数仪、万能电子测试机和差示扫描量热仪(DSC)进行性能测试和结构表征。结果表明,混合粒径(5μm∶20μm)BN比例为3∶2时,其制备的复合材料导热系数可达0.52 W/(m·K),较单一粒径(5μm)BN填料填充复合材料提高33.4%;弯曲强度达到46.91 MPa,弯曲模量达到3826.01 MPa,与单一粒径(5μm)BN填料填充复合材料相比,弯曲强度和弯曲模量分别提高23.34%和109.91%。将5μm粒径的BN在混合填料中的比例增加能够更有效提高复合材料的综合性能。In order to improve the heat-conducting property of polymer based thermal conductivity composite for the single sized particles,the structure,thermal properties and mechanical properties of polypropylene/polyethylene composite materials filled with mixed particle sizes of BN Boron nitride(BN)were studied.Measurements and structural characterizations were performed utilizing laser thermal conductivity meters,melt flow index testers,universal electronic testing machines,and differential scanning calorimetry(DSC).The results show when the ratio of the mixed particle sizes of BN(5 μm∶20 μm)is 3∶2,the prepared composite material achieves a thermal conductivity coefficient of 0.52 W/(m·K),it increases 33.4%comparing with the composite filled with single-sized(5 μm)BN particles.In addition,the bending strength and modulus could reach 46.91 MPa and 3 826.01 MPa,respectively,presenting an improvement of 23.34%and 109.91%over the composites filled solely with 5 μm BN particles.It is observed that increasing the proportion of 5 μm BN particles in the mixture can more effectively enhance the overall performance of the composite material.

关 键 词：氮化硼 聚丙烯 聚乙烯 导热复合材料 

分 类 号：TQ325[化学工程—合成树脂塑料工业]