共混聚乙烯/炭黑复合温敏材料特性的研究  

Electrical and Physical Properties of Polyethylene/Carbon Black Composites as Influence by Different Matrix Mixtures

作　　者：席保锋[1] 陈凯[1] 刘辅宜[1] 徐传骧[1] 

机构地区：[1]西安交通大学

出　　处：《西安交通大学学报》1999年第6期17-19,54,共4页Journal of Xi'an Jiaotong University

摘　　要：研究线型低密度聚乙烯（ＬＬＤＰＥ）和低密度聚乙烯（ＬＤＰＥ）分别与高密度聚乙烯（ＨＤＰＥ）进行共混改性后，对聚乙烯／炭黑复合正温度系数（ＰＴＣ）材料特性的影响．试验表明：ＬＬＤＰＥ与ＨＤＰＥ共混可形成共晶结构，而ＬＤＰＥ与ＨＤＰＥ共混后存在两种结晶结构，用ＬＬＤＰＥ改性ＨＤＰＥ，可使复合材料的机械物理性能大大改善，又不太影响其ＰＴＣ特性，是实现复合ＰＴＣ材料实用化的一条有效途径．The PTC (positive temperature coefficient) properties of different polyethylene mixtures/carbon black composite are investigated in this paper. Experiments show that the LLDPE (line low density polyethylene) and HDPE (high density polyethylene) composite can form a cocrystalline structure, and two types of crystalline structure exist in the composite of LDPE (low density polyethylene) and HDPE. The mechanical and physical properities of polyethylene/carbon black composite are improved by adding LLDPE in HDPE, and the composite remains well behaved in PTC properties.

关 键 词：聚乙烯 炭黑 PTC特性 温敏材料 复合材料 

分 类 号：TB332[一般工业技术—材料科学与工程] TN373[电子电信—物理电子学]