Positive temperature coefficient phenomenon of carbon loaded NBR composites

被引：0

作者：

Wan, Ying ^{[1
]}

Xiong, Chuanxi ^{[1
]}

Wen, Dijiang ^{[1
]}

机构：

[1] Wuhan Univ of Technology, Wuhan, China

来源：

Journal Wuhan University of Technology, Materials Science Edition | 1998年 / 13卷 / 02期

关键词：

Carbon black - Fillers - Synthetic rubber - Thermodynamic stability;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The resistivity of conductive composites of NBR (Butadiene nitrile rubber) filled with conductive carbon black and two kinds of special organic fillers was measured from room temperature to 90 °C. In such semiconductive systems. A positive temperature coefficient (PTC) phenomenon is observed, whose intensity depends on the type concentration and other physical and chemical properties of carbon black. Two empirical formulae are obtained by a theoretical fitting method from the experimental data. One is for the resistivity of NBR/CB composites at room temperature and the other is for the resistivity of NBR/N550 composites with relatively high concentrations N550 carbon block in the temperature range of 30 to approximately 90 °C. The stability of resistivity is also discussed.

引用

页码：19 / 25