中国塑料

中国塑料 ›› 2012, Vol. 26 ›› Issue (10): 62-65 .DOI: 10.19491/j.issn.1001-9278.2012.10.010

• 材料与性能 • 上一篇    下一篇

HNTs原位混杂复合材料的导热机理及自阻燃性能分析

甘典松 郑兴铭 宁平 王雄刚 邓凯桓   

  1. 南车时代新材
  • 收稿日期:2012-06-26 修回日期:1900-01-01 出版日期:2012-10-26 发布日期:2012-10-26

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

Diansong GAN Xingming ZHENG Ping NING Xionggang WANG Kaihuan DENG   

  • Received:2012-06-26 Revised:1900-01-01 Online:2012-10-26 Published:2012-10-26
  • Contact: Diansong GAN

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。

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

Abstract: 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 which HNTs and TLCP dispersed well in PA66 matrix. When the content of HNTs increased to 40 wt %, the thermal diffusivity, thermal conductivity, and limited oxygen index were increased by 27 %, 134 %, and 42 %, respectively.

Key words: polyamide 66, thermotropic liquid crystalline polymer, halloysite nanotubes, insitu composite, thermal conductivity mechanism, flameretardant property

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