科琴黑和气相生长碳纤维对石墨烯微片/聚丙烯复合材料性能的影响  

Effects of Ketjen Black and Vapor-grown Carbon Fiber on the Property of Graphene Nanoplatelet/Polypropylene Composites

作　　者：汪文 王方明[2] 刘滨 邱文莲 杨红梅[1] 沈烈[1] 

机构地区：[1]高分子合成与功能构造教育部重点实验室,浙江大学高分子科学与工程学系,浙江杭州310027 [2]中山火炬职业技术学院,广东中山528436

出　　处：《材料科学与工程学报》2013年第6期859-862,共4页Journal of Materials Science and Engineering

基　　金：浙江省自然科学基金项目资助(LY13E030001);宁波市重大(重点)科技攻关择优委托项目(2010B10022)

摘　　要：本文通过熔融共混法制备了多种聚丙烯(PP)基复合材料,研究了添加不同含量石墨烯微片(GNP)的GNP/PP复合材料的导热和导电性能以及科琴黑(KB)和气相生长碳纤维(VGCF)对GNP/PP复合材料导热和导电性能的影响。结果表明,随着GNP含量的增加,GNP/PP复合材料的导热系数不断增加,当GNP含量为60%时,GNP/PP复合材料的导热系数比纯PP(0.096 W/m·K)提高了12倍多;当在GNP含量为10%的GNP/PP复合材料中添加KB或VGCF后,该复合材料的导热和导电性能明显提高;扫描电镜照片表明KB或VGCF分布在GNP团聚体之间的PP基体中,GNP团聚体通过KB或VGCF链接形成通路,使得PP基体中形成了更多和更为完善的导电导热网络。Melting-blend method was used to prepare the polypropylene （PP） based composites. Thermal and electrical conductivity of graphene nanoplatelet （GNP）/PP composite as well as the influence of Ketjen black （KB） and vapor-grown carbon fiber （VGCF） on GNP/PP composite were investigated. The results show that the thermal conductivity of GNP/PP composites increases with the increase of GNP content. The thermal conductivity of 60% GNP/PP composite increases more than 12 times than that of pure PP （0. 096W/m-K）. With the addition of KB or VGCF, both thermal and electrical conductivity of 10 % GNP/PP composite are remarkably enhanced. The SEM images demonstrate that KB and VGCF are distributed between the GNP aggregates as bridges to connect the GNP aggregates, and more conductive networks are formed in PP matrix as a result.

关 键 词：科琴黑 气相生长碳纤维 石墨烯微片 导热 导电 

分 类 号：TB332[一般工业技术—材料科学与工程]