镀银玻璃微珠/硅橡胶导电复合材料导电性能的影响因素  

Influential factors on the electrical conductivity of silver-coated glass bead/silicone rubber electrically conductive composite

作　　者：邹华[1,2] 赵素合[2] 田明[2] 张立群[1,2] 

机构地区：[1]北京化工大学纳米材料先进制备技术与应用科学教育部重点实验室,北京100029 [2]北京化工大学北京市新型高分子材料制备与成型加工重点实验室,北京100029

出　　处：《橡胶工业》2009年第8期459-463,共5页China Rubber Industry

摘　　要：研究镀银玻璃微珠的用量、粒径、表面改性工艺以及导电硅橡胶硫化程度等对镀银玻璃微珠/硅橡胶复合材料导电性能的影响。结果表明,镀银玻璃微珠的粒径越大,复合材料的导电性能越好;湿法预处理和原位改性-分散工艺制得复合材料的导电性能和导电稳定性优于直接干混工艺;导电硅橡胶硫化程度的提高有利于提高材料的导电性能;Payne效应的大小与导电硅橡胶的体积电阻率有很强的相关性。The effects of the addition level, particle size and modification technology of silver-coated glass bead and the curing degree of electrically conductive silicone rubber on the electrical conductivity of silver-coated glass bead/silicone rubber composite were investigated. The results showed that the electrical conductivity of the composite was improved as the particle size of silver-coated glass bead increased;the electrical conductivity and its stability of composite prepared with wet pretreatment or insitu modification-dispersion were better than those of composite prepared with direct dry-mixing;the electrical conductivity of composite was improved as the curing degree of electrically conductive silicone rubber increased;the Payne effect was highly related to the volume resistivity of electrically conductive silicone rubber.

关 键 词：导电硅橡胶 镀银玻璃微珠 体积电阻率 网络结构 

分 类 号：TQ333.93[化学工程—橡胶工业] O482.4[理学—固体物理]