摘要
将导电粒子碳黑和铜粉分别与丁腈橡胶混合制备导电聚合物复合材料,其中碳黑(N550)/丁腈橡胶复合材料的电阻率随温度的变化呈现较强的正温度系数(PTC)效应。讨论了掺入导电粒子浓度、结构和表面性质以及混炼硫化工艺等对该类材料的室温电阻率及PTC效应的影响。
Several conductive composites were prepared by milling conductive particles (carbon blacks and copper powders) and butadiene nitrile rubber of which a carbon black(N550)/butadiene nitrile rubber exhibits fairly good PTC effect with respect to the relations of its resistivity vs.temperature. The influences of some factors on the room temperature resistivity and PTC effect are discussed, the factors including the content, structure and surface characteristics of conductive particles and the processes of milling and vulcanizing ete.
出处
《材料开发与应用》
CAS
1997年第6期16-20,共5页
Development and Application of Materials
关键词
导电粒子
丁腈橡胶
复合材料
正温度系数效应
Conductive particles Butadiene nitrile rubber Composite materials Positive temperature coefficient