HDPE-g-MAH对炭黑/HDPE复合材料耐电流冲击性能的影响  

Influence of MAH-g-HDPE on the Current Shock Withstanding Properties of Carbon Black/HDPE Composites

作　　者：覃迎峰 李健 连铁军 

机构地区：[1]深圳市长园维安电子有限公司,广东深圳518106

出　　处：《塑料工业》2014年第4期60-63,129,共5页China Plastics Industry

摘　　要：以高密度聚乙烯（HDPE）、炭黑及相容剂马来酸酐接枝HDPE （HDPE-g-MAH）制备了高分子正温度系数（PTC）材料,考察了HDPE-g-MAH的接枝率及含量对该PTC材料的耐电流冲击性能的影响.结果表明,添加接枝率为0.2％～0.5％的HDPE-g-MAH时,材料具有较好的耐电流反复冲击性能,耐电流反复冲击3 000次的电阻值升幅在10％以内,能很好地满足电机客户对PTC材料的长期耐久性的要求.With HDPE, carbon black and maleic anhydride grafted HDPE compatilizer （HDPE-g- MAH）, PTC polymer materials with high current shock withstanding properties was prepared. The effect of the grafting rate and content of the HDPE-g-MAH on the current shock withstanding properties of compatilizer were analyzed. The results showed that adding 0.2% - 0. 5% content of HDPE-g-MAH, HDPE had good current shock withstanding properties, and the increasing rate of the resistance was less than 10% after 3 000 times of repeated current shocks, it can well meet the electrical requirements of the customers long-term durability of PTC materials.

关 键 词：炭黑 马来酸酐接枝高密度聚乙烯 正温度系数特性 耐电流反复冲击 

分 类 号：TQ320.1[化学工程—合成树脂塑料工业]