改性氧化石墨烯对无石棉垫片性能的影响.

Three kinds of silane coupling agents (KH550, KH560, KH570) were used to modify graphene oxide (GO). The effects of different modification methods and addition amounts on the physical properties of the composite gasket were studied, and the microscopic analysis was carried out by FTIR and SEM. The results showed that the modification method, addition amount and modification method and addition amount of GO had significant effects on the compression rate, tensile strength and weight gain rate of the composite gasket after impregnating ASTM fuel oil, but the effect of the rebound rate of the composite gasket was not significant. The modification method and addition amount of GO had no significant effect on the thickening rate of the gasket. The gasket prepared with 0.15% GO modified by KH570 has the maximum rebound rate, tensile strength and weight gain rate; when the addition amount was more than 0.15%, the compression rate, spring back rate, tensile strength, weight gain rate and thickening rate decreased.GO modified by KH570 was added to the composite gasket, which promoted the strong micro-physical and chemical interaction between the component materials. When the content of GO modified by KH570 was 0.15%, the composite material showed the best effect in micro-physical and chemical interaction. Overall, the gasket prepared with 0.15% GO modified by KH570 has the best comprehensive performance. [ABSTRACT FROM AUTHOR]