结果表明，对炭黑（尤其是槽法炭黑）进行表面处理可显著提高复合材料的电导率，减小NTC（负温度系数）效应；
The results showed that the conductivity of the composites increased remarkably and the NTC ( negative temperature coefficient ) effect decreased by the surface treatment of CB . The titanate coupling agent possesses the optimum effect .
槽法炭黑