MC尼龙蒙脱土纳米复合材料的制备与表征  

Preparation and Characterization of MC Nylon Montmorillonite Nanocomposites

作　　者：张士华[1] 陈光[1] 崔崇[1] 

机构地区：[1]南京理工大学材料科学与工程系,江苏南京210094

出　　处：《高分子材料科学与工程》2010年第7期114-117,共4页Polymer Materials Science & Engineering

基　　金：国家"863"计划重大专项资助课题(2002AA2Z4141)

摘　　要：在超声条件下以KH550硅烷偶联剂插层蒙脱土,采用阴离子聚合反应制备MC尼龙蒙脱土纳米复合材料(MMT/PA),并对改性蒙脱土和纳米复合材料的结构进行表征与性能测试。结果表明,在超声分散条件下KH-550硅烷偶联剂进入蒙脱土的片层间,增大层间距;聚合过程中己内酰胺进入蒙脱土的片层间,实现蒙脱土与己内酰胺的键性结合,并使得最终尼龙分子插层进入蒙脱土的片层间形成纳米复合材料。蒙脱土以部分剥离的多片层聚集体均匀地分散在尼龙基体中,起到增强增韧作用,当蒙脱土含量在3%左右时纳米复合材料的力学性能达到最优。Montmorillonite was dispersed in water by stirring and ultrasonic vibration, and then treated with silane coupling agent KH550. It analysed the structure and properties of treated montmorillonite and MC nylon montmorillonite nanocomposites which were prepared by anionic polymerization of caprolactam. The results show the use of ultrasonic vibration is favorable to the dispersion of montmorillonite and the silane coupling agent had been grafted to the nano-fibred crystal of montmorillonite. The caprolactam is polymerized in the interlayer of montmorillonites to form nanocomposites. The silicate layers of montmorillonites dispersed in nylon 6 matrix can increase the mechanical properties of nanocomposites. The optimum comprehensive mechanical properties can be achieved in case of the composite containing 3% montmorillonite.

关 键 词：MC尼龙 蒙脱土 纳米复合材料 制备 

分 类 号：TB383[一般工业技术—材料科学与工程]