导电炭黑/三元乙丙橡胶电磁屏蔽复合材料的性能研究  

Study on Properties of Conductive Carbon Black/EPDM Electromagnetic Shielding Composites

作　　者：赵宜武 邹华[1] 田明[1,2] 张立群[1,2] 李淑环[3] 

机构地区：[1]北京化工大学北京市新型高分子材料制备与加工重点实验室,北京100029 [2]北京化工大学纳米材料先进技术与应用科学教育部重点实验室,北京100029 [3]北京橡胶工业研究设计院,北京100143

出　　处：《橡胶工业》2015年第1期5-9,共5页China Rubber Industry

摘　　要：以三元乙丙橡胶(EPDM)为基体、导电炭黑为导电填料,并添加增塑剂,制备可挤出加工的炭黑/EPDM电磁屏蔽复合材料,研究炭黑和增塑剂的品种和用量对复合材料性能的影响。结果表明:添加结构度高、粒径小的导电炭黑有利于形成导电网络;随着炭黑用量的增大,复合材料的体积电阻率逐渐降低,当炭黑用量达到18份时,可以得到体积电阻率小于10Ω·cm的导电橡胶复合材料;添加20份石蜡油时,能有效降低胶料的门尼粘度。The electrical conductive carbon black/EPDM electromagnetic shielding composites which could be processed by extrusion were prepared using EPDM as matrix and conductive carbon black as conductive filler.The influence of type and addition level of carbon black and plasticizer on the properties of the obtained composites was investigated.It was found that the electrical conductivity of the composites was improved by using electrically conductive carbon black with higher structure and smaller particle size.As the addition level of conductive carbon black increased,the volume resistivity of the composites decreased.When the addition level of conductive carbon black was 18 phr,the volume resistivity of the composite was less than 10 Ω · cm.By adding 20 phr of paraffin oil,the Mooney viscosity of the composite could be reduced effectively.

关 键 词：炭黑 三元乙丙橡胶 复合材料 导电性能 电磁屏蔽效能 

分 类 号：TQ333.4[化学工程—橡胶工业] TQ330.381