摘要：为了提高绢云母改性效果及工业应用价值,采用硅烷偶联剂KH-550对绢云母粉体进行改性,并对工艺条件进行研究;通过润湿接触角、水杨醛-乙醇显色、红外光谱、橡胶制品力学性能和扫描电镜等分析和表征KH-550对绢云母粉体的改性效果。结果表明,改性绢云母最适宜条件为KH-550质量分数为1.6%,温度100℃;改性后,KH-550以化学键合作用为主附着于绢云母表面;以改性绢云母作橡胶填料,能改善橡胶制品的力学性能,KH-550改性绢云母因其片状晶形和特殊表面性质适合作硫化橡胶的补强填料。

关键词：绢云母；硅烷偶联剂；表面改性；硫化橡胶

Abstract：In order to improve the effect of modified sericite and industrial application value, the research of surface modification of sericite by silane coupling agent(KH-550) and the technological conditions were investigated. Wetting contact angle,salicylaldehyde-ethanol chromogenic reaction, FT-IR, the rubber mechanical properties and SEM were used to analyze and characterize modified sericite by KH-550. The results indicate that the most appropriate condition of KH-550 concentration is1.6%(mass fraction), and the treatment temperature is 100 ℃,KH-550 is adsorbed on the sericite surface by chemical bond, and the mechanical properties of rubber is improved with the modified sericite as rubber filler. Therefore, the crystal shape and surface properties of the surface modification of sericite by KH-550 is suitable for special vulcanized rubber reinforcing filler.

Keywords: sericite；silane coupling agent；surface modification；vulcanized rubber