HNTs原位混杂复合材料的导热机理及自阻燃性能分析  

Thermal Conductivity Mechanism and Flame-retardant Properties of HNTs In-situ Hybrid Composites

作　　者：甘典松[1] 郑兴铭[1] 宁平[2] 王雄刚[1] 邓凯桓[1] 

机构地区：[1]株洲时代新材料科技股份有限公司,湖南株洲412000 [2]华南理工大学材料科学与工程学院,广东广州510640

出　　处：《中国塑料》2012年第10期62-65,共4页China Plastics

摘　　要：采用熔融共混法制备了聚酰胺66(PA66)/热致液晶聚合物(TLCP)/埃洛石纳米管(HNTs)原位混杂复合材料,研究了其导热机理、阻燃性能及微观形态。结果表明,复合材料的热导率及极限氧指数均随HNTs含量的增加而提高,且HNTs形成导热网链的临界值为30%(质量分数,下同);当HNTs含量为40%时,复合材料的热扩散系数、热导率、极限氧指数分别提高了27%、134%和42%;扫描电子显微镜显示,TLCP及HNTs均能在基体中均匀分散,并能观察到TCLP所形成的沿纤维轴方向取向的微纤及HNTs所形成的导热网链。Polyamide 66/thermotropic liquid crystalline polymer/halloysite nanotubes （PA66/ TLCP/HNTs） In-situ hybrid composites were prepared by means of melt blending. The thermal conductivity mechanism, flame retardant properties as well as the morphologies of the composites were investigated. The thermal conductivity properties and limited oxygen index were improved as the amount of HNTs increased and a thermal conductive net was formed at a HNTs content of 30 wt , in increased to increased by which HNTs and TLCP dispersed well in PA66 matrix. When the content of HNTs 40 wt , the thermal diffusivity, thermal conductivity, and limited oxygen index were 27 %, 134 %, and 42 %, respectively.

关 键 词：聚酰胺66 热致性液晶聚合物 埃洛石纳米管 原位复合材料 导热机理 阻燃性能 

分 类 号：TB33[一般工业技术—材料科学与工程]