Effect of Compression Storage on Adsorption Property of Silicone Rubber in Silicone Interfacial Systems

Abstract

The effect of compression storage on adsorption property of silicone rubber in silicone rubber-stainless steel interfacial system and silicone rubber-simulated X material interfacial system was studied in the paper by means of adsorption force testing and SEM statistical calculation method. The results of adsorption force testing indicated that surface roughness, sample type and compression ratio had important influence on adsorption, i.e. smooth surface tend to absorb, which implied that vacuum adsorption might be the main adsorption mechanism for silicone rubber interfacial systems. Plane-type, spherical type and inclinded plane type of samples had different degree of adsorption. Stainless steel interface tended to have larger adsorption than simulated X material interface. Higher compression ratio might lead to higher adsorption force. A SEM statistical calculation method was proposed to estimate the maximum vacuum adsorption force, and the maximum measurement result of adsorption force was approaching to the calculated maximum vacuum adsorption force by the proposed SEM method.