Test on modified RTV coating for hot and humid environment

The adhesion of room temperature vulcanized (RTV) silicone rubber coating on insulators can be badly affected by hot and humid climate, which is apparently in Guangdong Province of China. In this paper, silane coupling agent (SCA) was used to modify the ingredient of RTV to enhance the adhesion operation in hot and humid environment. The results indicated that SCA could improve the adhesion of RTV and the other mechanical and insulation resistivity were not affected. And RTV adhesion testing method should be optimized for hot and humid environment.