辐照尼龙12/炭黑PTC材料的性能研究  

PTC Effect of γ-ray Irradiated Nylon12/Carbon Black Composite

作　　者：杨明[1] 赫秀娟[1] 

机构地区：[1]沈阳化工学院材料科学与工程学院,辽宁沈阳110142

出　　处：《沈阳化工学院学报》2008年第1期54-56,共3页Journal of Shenyang Institute of Chemical Technolgy

摘　　要：研究了γ-射线辐照对尼龙12/炭黑PTC材料性能的影响.通过凝胶抽提、电阻率-温度测试和热循环实验,考察辐照剂量和交联敏化剂对尼龙12/炭黑PTC材料性能的影响.结果表明:辐照交联可以抑制材料的NTC效应,并且改善PTC材料的热使用稳定性.Positive temperature coefficient （PTC） composites of Carbon black （CB）-filled nylon12 （PA12） were prepared by melt mixing process and irradiated with γ-ray. Gel extraction, resistivity temperature relation and several heating cycles of the composite were tested and recorded. The influences of irradiation dose and crosslink-acceleration reagent on PTC behavior of the composites were examined. The results show that the irradiated PA12/CB composites demonstrated very low NTC effect,and PTC heating stabilization of the composite was well after several heating cycles.

关 键 词：尼龙12 正温度系数材料 辐照 

分 类 号：TQ324.8[化学工程—合成树脂塑料工业]