高等学校化学学报

高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (9): 1480.

• 论文 • 上一篇    下一篇

石墨填充高密度聚乙烯基复合材料导热性能的研究

王琪, 高峻, 王茹, 华正坤   

  1. 四川大学高分子研究所, 成都 610065
  • 收稿日期:1998-12-31 出版日期:1999-09-24 发布日期:1999-09-24
  • 通讯作者: 王琪,女,49岁,博士,教授.
  • 作者简介:王琪,女,49岁,博士,教授.
  • 基金资助:

    中国石油化工科技开发公司;四川省科委应用基础研究基金;四川大学青年基金

Studies on the Thermal Conductivity of HDPE/C Composites

WANG Qi, GAO Jun, WANG Ru, HUA Zheng-Kun   

  1. Polymer Research Institute of Sichuan University, the State Key Laboratory of Polymer Materials Engineering, Chengdu 610065, China
  • Received:1998-12-31 Online:1999-09-24 Published:1999-09-24

PDF (PC)

被引次数

39

摘要： 选用导热系数较高的无机填料石墨对高密度聚乙烯(HDPE)进行填充改性;采用偶联剂和磨盘型力化学反应器对石墨进行表面处理,提高石墨与聚合物基体的界面相互作用;用自行研制的升温速率测定装置测试材料的导热性能,并研究材料的导热机理;用SEM观察复合材料的微观形态.实验结果表明:经偶联剂处理后,石墨在HDPE中均匀分布;测试试样的上表面温度随时间的变化可用三次多项式T=A0+A1t+A2t2+A3t3拟会;HDPE/石墨复合材料升温速率随石墨含量增加而增大;石墨含量为35％的复合材料最大升温速率为HDPE的1.75倍.

关键词: HDPE, 石墨, 导热性, 复合材料

Abstract: Thermal conductivity of HDPE/C composites and its mechanism were studied through SEM and thermal conductivity measurement.The results show that after being treated with coupling agent through pan-milling, the graphite particles will uniformly disperse in HDPE matrix, the interface interaction between graphite and HDPE enhances quite a lot.The temperature detected on the sample surface vs.time shows an excellent agreement with third-polynomial regression: T= A0+ A1t + A2t2+ A3t3.The thermal conductivity of HDPE/C is much higher than that of HDPE, the temperature-increasing rate of HDPE/C(65/35) composite reaches 1.75 times of that of HDPE.

Key words: HDPE, Graphite, Thermal conductivity, Composite material

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