高导电硅橡胶环境适应性研究  

Study on Environmental Adaptability of High Conductive Silicone Rubber

作　　者：王鑫 张骥忠 翟广阳 许伟通 雷海军 WANG Xin;ZHANG Jizhong;ZHAI Guangyang;XU Weitong;LEI Haijun(Northwest Rubber and Plastic Research and Design Institute Co.,Ltd.,Xianyang 712023,China)

机构地区：[1]西北橡胶塑料研究设计院有限公司,陕西咸阳712023

出　　处：《有机硅材料》2024年第1期27-32,共6页Silicone Material

摘　　要：以镀银铝粉填充硅橡胶制备的高导电硅橡胶为研究对象,通过对比初始与航空机载设备各环境试验后的性能测试结果,分析了高导电硅橡胶的环境适应性。结果表明:高温、低温、温度冲击、湿热、盐雾、霉菌、酸性大气、臭氧和太阳辐照环境对高导电硅橡胶的密度和硬度基本无影响;拉伸强度、断裂伸长率在太阳辐照和臭氧环境后降低;表面电阻在56 d太阳辐照环境后,由0.028Ω增大到0.156Ω,电性能衰减明显。因此,在设计和使用镀银铝粉填充的高导电硅橡胶时需要对其导电性能预留一定的下降裕度,方可满足设备耐久性要求。The high conductivity silicone rubber prepared by filling silicone rubber with silver plated aluminum powder was studied,and the environmental adaptability of high conductive silicone rubber was analyzed by comparing the performance of the initial and the airborne equipment in the environmental tests.The results show that the high temperature,low temperature,temperature shock,humid heat,salt spray mold,acidic atmosphere,ozone and solar irradiation are nondestructive on the density and hardness of the high conductive silicone rubber.The tensile strength and elongation at break of the rubber decreases after solar irradiation and ozone environment.After 56 days'solar irradiation,the surface resistance increases from 0.028Ωto 0.156Ω,and the electrical performance decreases significantly.Therefore,when designing and using the highly conductive silicone rubber filled with silver-coated aluminum powder,it is necessary to reserve a margin for its conductivity to meet the durability requirements of the equipment.

关 键 词：高导电性 导电硅橡胶 环境适应性 太阳辐照 耐臭氧 性能衰减 

分 类 号：TQ333.93[化学工程—橡胶工业]