CNTs／PC／HDPE各向异性导电复合材料在有机溶剂中的电阻响应特性  

Positive Liquid Coefficient Effect of CNTs/PC/PE Anisotropic Conductive Composite Immersed into Xylene

作　　者：黄华东[1] 高杰峰[1] 鄢定祥[1] 曾祥补[1] 李忠明[1] 

机构地区：[1]四川大学高分子科学与工程学院,高分子材料工程国家重点实验室,四川成都610065

出　　处：《塑料工业》2009年第9期46-49,共4页China Plastics Industry

基　　金：国家自然科学基金(50673061)

摘　　要：通过"熔融共混-挤出-热拉伸-淬冷"工艺,制备了碳纳米管(CNTs)聚/碳酸酯(PC)高/密度聚乙烯(HDPE)各向异性导电复合材料,对该复合材料在二甲苯溶剂中的液敏响应行为进行了研究。结果表明,体系中PC微纤在HDPE基体中取向分布,CNTs主要分布在PC的表面;体系的CNTs质量分数越低,拉伸比越大,温度热处理时间越短,液敏响应强度越高;而随着PC含量的增加,液敏响应强度先减小后增加。Melt blending-extrusion-hot tensile-quenching process was utilized to prepare carbon nanotubes （ CNTs）/polycarbonate （ PC ）/high density polyethylene （ HDPE ） anisotropic conductive composite. Studied the positive liquid coefficient（PLC） behavior of the composite in the xylene solvent. The result showed that PC micro fibers distributed along the stretch direction in HDPE matrix, CNTs were selectively located on the surface of PC. The lower the CNTs content, the larger hot stretch ratio and the shorter thermal treatment time was, the stronger the PLC intensity was. In addition, with increase of PC content, the PLC intensity of composite decreased firstly and then increased.

关 键 词：碳纳米管 各向异性 各向异性导电复合材料 液敏 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]