偶联剂复合改性绢云母的研究  

Research on the modification of sericite by coupling agent

作　　者：王晓艳[1] 朱静燕[1] 高延敏[1] 宋东坡[1] 

机构地区：[1]江苏科技大学材料科学与工程学院,江苏镇江212003

出　　处：《中国涂料》2010年第3期41-44,共4页China Coatings

摘　　要：用硅烷偶联剂(silane coupling agent,SCA)、γ-缩水甘油醚氧基丙基三甲氧基硅烷(KH-550)、γ-氨基丙基三乙氧基硅烷(KH-560)、γ-(甲基丙烯酰氧基)丙基三甲氧基硅烷(KH-570)对片状绢云母进行表面改性。红外光谱分析结果表明:SCA通过与绢云母表面的羟基发生化学键合而实现对超细绢云母表面的修饰改性。扫描电镜(SEM)和接触角测试表明:KH-550和KH-570对绢云母改性效果较佳,KH-560改性效果相对较差。在此基础上,进一步研究了KH-550和KH-570对绢云母的复合改性,结果表明:复合改性后绢云母的疏水亲油性得到更大的提高,对绢云母的表面改性效果最佳。Sericite is modified by silicone coupling agent （SCA）, γ-glycidoxypropyltrimethoxysilane（KH-550）, γ-aminoprop yltriethoxysilane（KH-560） and γ-methacryloxypropyltrimethoxysilane（KH-570）. Through the infrared spectrum analysis, it is showed that SCA modifying sericite is through the bonding with the carbonyl group. SEM and contact angle test shows that the modification effect of KH-550 and KH-570 is better than the effect of KH-560. Then, it is studied to modify sericite by mixed KH-550 and KH-570, showing that the compound modification can greatly improve the hydrophobic lipophilicity of sericite and it is of best effect.

关 键 词：硅烷偶联剂 复合改性 绢云母 

分 类 号：TQ630.49[化学工程—精细化工]