超高分子量聚乙烯对有机PTC复合材料的超强稳定作用研究  

The Study of the Super-stability of Carbon Filled PTC Blends Containing UHMWPE

作　　者：苏战排[1] 李长明[1] 

机构地区：[1]哈尔滨理工大学电缆材料研究所,黑龙江哈尔滨150040

出　　处：《塑料科技》2001年第4期4-6,共3页Plastics Science and Technology

摘　　要：利用传统的熔融 混合方法制备碳黑填充的聚丙烯 (PP) /超高分子量聚乙烯 (UHMWPE)复合物。当PP/UHMWPE混合比大于 3 / 7,碳黑填充PP/UHMWPE复合物的PTC和NTC效应类似于碳黑填充的纯净PP聚合物。然而当重量比等于或小于 3 / 7时 ,复合物所表现的PTC效应非常相似于碳黑填充的纯净的UHMWPE聚合物。Carbon black (CB) filled polypropylene(PP)/ultra high molecular weight polyethylene(UHMWPE) composites could be prepared by the conventional melt mixing method. When the PP/UHMWPE weight ratio is larger than 3/7, the PTC and NTC behaviors of 25wt% CB filled PP/UHMWPE composites are similar to those of a CB filled pure PP composite. However, when the weight ratio is equal to or less than 3/7, the composites exhibit a PTC effect that is similar to that of a CB filled pure UHMWPE composite. The elimination of the NTC effect in CB filled polymer blend composites can be achieved by using a very high viscosity polymer as one of its components.

关 键 词：聚丙烯 超高分子量聚乙烯 复合物 正温度系数 稳定性 

分 类 号：TQ325[化学工程—合成树脂塑料工业]