炭黑／新酚树脂导电复合材料的电学性能研究  

Electrical Properties of Carbon Black/Xylok Resin Conductive Composite

作　　者：熊佳[1] 黄英[1] 王琦洁[1] 李郁忠[1] 

机构地区：[1]西北工业大学应用化学系,陕西西安710072

出　　处：《中国塑料》2006年第1期40-44,共5页China Plastics

摘　　要：为制得新型导电复合材料,首先将新酚树脂羟甲基化,使其耐热性能提高。预处理后的新酚树脂在近 400℃时才开始分解。再以预处理后的新酚树脂为基体、乙炔炭黑为导电填料、玻璃纤维织物为增强材料制备了导电复合材料;确定了材料的导电性与导电填料含量的关系;当炭黑含量为3％时,材料在安全电压下发热温度达到 250℃;研究了导电复合材料的伏安特性,发现其具有非线性欧姆关系;同时也发现制备的导电复合材料具有微弱的正温度系数效应。Xylok resin was hydroxymethylated to achieve a high decomposing temperature above 400℃. The modified xylok resin was subsequently blended with glass cloth and acetylene black to generate a new conductive composite. The relationship between electrical conduction and carbon black content was determined. When carbon black content was 3 wt %, a heating temperature at safety voltage of 250℃ was obtained. The voltage-current characteristic of the conductive composites showed a nonlinear behavior. A moderate positive temperature coefficient was also observed.

关 键 词：新酚树脂 导电复合材料 伏安特性 正温度系数效应 

分 类 号：TQ323.1[化学工程—合成树脂塑料工业]