碳纳米管填充聚合物基复合体系的电磁屏蔽性能  

Electro-magnetic Shielding Effectiveness of Carbon Nanotube Filled Polymer Based Composite

作　　者：罗成[1] 徐军[1] 郭宝华[1] 

机构地区：[1]北京市清华大学化工系高分子研究所,北京100084

出　　处：《塑料》2010年第6期37-40,共4页Plastics

摘　　要：为防止和减轻电磁渡的危害，研制电磁屏蔽材料有重要的实际意义。分别以聚碳酸酯（PC）以及聚碳酸酯／丙烯腈-丁二烯-苯乙烯共聚物（PC／ABS）为基体，以多壁碳纳米管（MWCNT，muliti—walledcarbonnanotubes）为主要导电材料，采用熔融法制备填充型复合材料，并对其流变性能和电磁屏蔽效能（SE，shielding effectiveness）进行测试。复合体系在2．5％～3．0％的填充分数内发生了流变逾渗过程。研究制备5E大于35dB的复合材料，达到民用屏蔽材料的实用标准。To avoid harm to our health and electronic equipments, composites applied for eletro-magnetic shielding had broad prospects. In the research, polycarbonate or polycarbonate/acrylonitrile butadiene styrene was aopted as the base material,and multi-walled carbon nanotubes were adopted as the main fillers. Composite was prepared by melt blending. The theological behavior was investigated and the step between 2.5 % and 3 % might be regarded as a rheological threshold. Shielding effectiveness of composites was tested. Composite whose shielding effectiveness was over 35 dB was prepared.

关 键 词：复合材料 电磁屏蔽 聚碳酸酯 碳纳米管 填充 

分 类 号：TQ323.41[化学工程—合成树脂塑料工业]