摘要
用反应法制备了ＴｉＣｌ＿４／ＡｌＥｔ＿３／炭黑催化剂，原位催化乙烯聚合，获得了既不同于结构型又区别于复合型的新型导电聚乙烯。发现较好的聚合条件是：聚合温度３５℃；聚合时间２０ｍｉｎ；Ａｌ／Ｔｉ＝６。测试结果表明材料有良好的ＰＴＣ（ＰｏｓｉｔｉｖｅＴｅｍｐｅｒａｔｕｒｅＣｏｅｆｆｉｃｉｅｎｔ）效应，而且性能稳定，不出现ＮＴＣ（ＮｅｇａｔｉｖｅＴｅｍｐｅｒａｔｕｒｅＣｏｅｆｆｉｃｉｅｎｔ）效应。
A new conductive polyethylene was obtained through polymerization in situ using TiCl_4/AlEt_3/carbon black as catalyst.The measurement results indicate that the new conductive poly-ethylene with 10.8%-15%carbon black content shows obvious PTC phenomenon,with lowercritical volume fraction and no NTC phenomenon,The conductive polyethylene also has betterreproducibility and stability.
出处
《石油化工》
EI
CAS
CSCD
北大核心
1995年第4期211-215,共5页
Petrochemical Technology
基金
浙江省自然科学基金
