碳纳米管/Al_2O_3/硅橡胶导热复合材料结构和性能的研究  

Study on Structure and Properties of thermal conductive Carbon nanotubes/Al_2O_3/Silicone Rubber Composite

作　　者：何强[1,2] 卢咏来[1,2] 陈琪[2] 刘宇[2] 张立群[1,2] 

机构地区：[1]北京化工大学北京市新型高分子材料制备与加工重点试验室,北京100029 [2]北京化工大学先进弹性体材料研究中心,北京100029

出　　处：《特种橡胶制品》2009年第2期1-6,共6页Special Purpose Rubber Products

基　　金：国家自然科学基金项目(50873007);北京市自然科学基金项目(2082019);北京市科技新星计划(2006A15)

摘　　要：将碳纳米管混入Al2O3/硅橡胶复合材料中,制得了导热硅橡胶复合材料并对其进行了研究。结果表明:随着碳纳米管用量的增加,材料导热性能逐渐增加;碳纳米管有助于填料网络结构的形成,达到了协同增加导热性能的效果;原预想碳纳米管在体系中伸展后能形成导热通路,可大幅提高导热效率,但由于开炼共混时未能保存住其高长径比的特点,增益效果不够显著。The thermal conductive silicone rubber composite was prepared and researched by blending carbon nanotubes （CNT） to Al2O3/ silicone rubber composite. The results showed that the thermal conductive behaviour of Al2O3/ silicone rubber/CNT composite was increasing with the increasing of CNT dosage ;CNT were of assistance in forming the filler-network structure,and reached the effect of cooperatively improving the thermal conductive behaviour ;The improvement effect provided by CNT did not achieve the expectation because CNT ruptured and losed their original feature of high aspect ratio during the blending.

关 键 词：碳纳米管 导热硅橡胶 填料网络结构 

分 类 号：TQ333.93[化学工程—橡胶工业]