凹凸棒土的有机表面改性  

Organic Surface Modification of Attapulgite

作　　者：李隽[1] 

机构地区：[1]江苏食品职业技术学院生物与化学工程学院,江苏淮安223005

出　　处：《广东化工》2011年第5期133-134,共2页Guangdong Chemical Industry

摘　　要：以硅烷偶联剂KH-570和钛酸酯偶联剂NDZ-311为改性剂,对凹凸棒土(以下称为凹土)进行表面改性,通过差热分析、扫描电镜、透视电镜等分析方法考察了凹土的热力学性能以及凹土改性前后晶体形貌、成分、晶体结构的变化;界面接触角和活化指数分析结果表明经改性凹土的界面接触角和活化指数均较未改性凹土有所增加,其中,硅烷偶联剂改性凹土的界面接触角和活化指数增加幅度较大。Attapulgite was modified by siliocon couping agent KH-570 and titanate couping agent NDZ-311.DTA,SEM,and TEM technologies were used to characterize attapulgite＇s components,change in crystal structure,and thermodynamic property before and after modification.Analysis of contact angle and activation index show that both the contact angle and activation index of attapulgite increase after coupling agent treatment.The rapid growth of contact angle of the attapulgite modified by silane indicates that silane coupling agent performs better than titanate coupling agent.

关 键 词：凹凸棒土 偶联剂 表面改性 活化指数 

分 类 号：TQ[化学工程]