PP/KPEG/MWNTs导热复合材料制备及性能  

PP/KPEG/MWNTs Thermal Conductive Composites Preparation and Properties

作　　者：杨芳[1] 徐百平[2] 杜遥雪[3] Yang Fang;Xu Baiping;Du Yaoxue(School of Mechanical and Power Engineering, Guangdong Ocean University, Zhanjiang 524088, China;Technology Development Center for Polymer Processing Engineering of Guangdong Colleges and Universities, Guangdong Industry Technical College, Guangzhou 510300, China;College of Mechanical and Electrical Engineering, Wuyi University, Jiangmen 529020, China)

机构地区：[1]广东海洋大学机械与动力工程学院,广东湛江524088 [2]广东轻工职业技术学院广东高校高分子材料加工工程技术开发中心,广州510300 [3]五邑大学机电学院,广东江门529020

出　　处：《工程塑料应用》2017年第3期45-49,共5页Engineering Plastics Application

基　　金：广东省自然科学基金项目(2016A030313004);广东高校高分子材料加工工程技术开发中心滚动项目(2013CXZDB004)

摘　　要：将可膨胀石墨(KPEG)和多壁碳纳米管(MWNTs)混合填料填充至聚丙烯(PP)制备PP/KPEG/MWNTs导热复合材料。保持混合填料总质量分数30%不变,改变两者质量比进行试验。结果表明,随着MWNTs填充比例增加,导热复合材料的拉伸强度呈先增大后减小趋势,而缺口冲击强度总体呈下降趋势。与纯PP相比,当MWNTs与KPEG质量比为1∶5(MWNTs质量分数为5%)时,导热复合材料的热导率提高了328.4%;MWNTs可提高复合材料热稳定性,但改变其与KPEG质量比在试验范围内对热稳定性影响较弱。Expandable graphite(KPEG)and multiwalled carbon nanotube(MWNTs)mixture were filled to polypropylene(PP)to prepare PP/KPEG/MWNTs thermal conductive composites.The total mass fraction of the mixed filler was set30%and themass ratio of KPEG/MWNTs was changed during the tests.The results show that with increasing MWNTs contents,the tendencyof tensile strength first increase and then fluctuating decrease,while the notch impact strength generally show a downward trend.Compared with pure PP,the thermal conductivity of new composites is enhanced by328.4%when the mass ratio of MWNTs/KPEGis1∶5(at this point the MWNTs content is5%).MWNTs can improve the thermal stability of the composites,but the different massratio of KPEG/MWNTs show a weak influence on the thermal stability in the test range.

关 键 词：聚丙烯 可膨胀石墨 多壁碳纳米管 复合材料 热导率 力学性能 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]