聚丙烯/石墨复合材料的导电与阻燃性能研究  

Electrical Conductivity and Flame-retardancy of Polypropylene/Graphite Composites

作　　者：应宗荣[1] 胡媛[1] 陈辉[1] 许国华[1] 王志高[1] 

机构地区：[1]南京理工大学化工学院,江苏南京210094

出　　处：《中国塑料》2006年第11期62-65,共4页China Plastics

摘　　要：制备了以膨胀石墨和可膨胀石墨为填料、聚丙烯为基体的兼具导电与阻燃性能的复合材料。确定了膨胀石墨和可膨胀石墨的表面处理剂及其最佳用量,研究了复合材料的导电性能和阻燃性能。结果表明,固定可膨胀石墨含量为10%(质量分数,下同),当膨胀石墨含量达到12%时,复合材料的导电网络基本形成；固定膨胀石墨含量为8%,当可膨胀石墨含量达到25%时,复合材料的导电网络也基本形成。结果表明,复合材料的导电性主要靠膨胀石墨起作用,但可膨胀石墨也能发挥一定的导电作用。膨胀石墨对于复合材料的阻燃性贡献甚微,阻燃效应主要靠可膨胀石墨起作用。Electrically conductive and flarne-retardant polypropylene composites were prepared via blending PP with expanded graphite and expandable graphite. The surface treatment for the graphite was studied. When the loading of graphite was 12 wt% expanded one plus 10 wt% of expandable one, 8 wt% of expanded one plus 25 wt% of expandable one, the electrical conductivity of the composite ex- hibited a maximum. Measured by limiting oxygen index method, it was found that the composite had a good flame-retardant characteristics and expanded graphite had less contribution to flame retardant effect.

关 键 词：膨胀石墨 可膨胀石墨 聚丙烯 导电 阻燃 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]