导电硅橡胶导电性和电热性的研究  

Study on electrical conductivity and electroheat property of electrical conductive silicone rubber

作　　者：黄英[1] 李郁忠[1] 周传友 冯雷 

机构地区：[1]西北工业大学化工系,陕西西安710072

出　　处：《橡胶工业》2002年第2期77-81,共5页China Rubber Industry

摘　　要：对乙炔炭黑作导电填料的导电硅橡胶的导电性和电热性进行了研究。结果表明 ,由乙炔炭黑用量和渗滤阈可以预测和控制导电硅橡胶的体积电阻率 ;导电硅橡胶的电阻 温度变化规律符合隧道效应理论模型 ;导电硅橡胶的电压 电流特性呈非线性欧姆性 ,且乙炔炭黑用量越大 ,电压 电流特性的非线性欧姆性越显著 ;发热量与热损耗量达到平衡时 ,导电硅橡胶的表面温度可维持 14 0℃ ,导电硅橡胶可作面状发热体使用 ;在满足导电性能的前提下 ,为保证导电硅橡胶良好的物理性能 。The electrical conductivity and electroheat property of electrical conductive silicone rubber filled with acetylene black were investigated.The results showed that the volume resistivity of electrical conductive silicone rubber could be predicted and controlled by the additional level and threshold of acetylene black;the volt ampere performance of electrical conductive silicone rubber was non linear ohmic,and the non linear ohmic characteristics was more remarkable as the additional level of acetylene black increased;the surface temperature of electrical conductive silicone rubber could be kept at 140 ℃ and the electrical conductive silicone rubber could be used as a plane like heat generator;and the additional level of acetylene black should have been controlled to ensure both the satisfactory electrical conductivity and good physical properties of electrical silicone rubber.

关 键 词：导电橡胶 硅橡胶 乙炔炭黑 导电性 发热性 

分 类 号：TQ333[化学工程—橡胶工业]