基体炭种类对C/C复合材料电导率的影响分析

Effect of different matrix on C/C composites conductivity

使用炭毡为增强体分别制备了热解炭基、树脂炭基、沥青炭基和热解炭/树脂炭双基体、树脂炭/沥青炭双基体C/C复合材料,比较研究了复合材料的电导率与不同先驱体含量的关系。结果表明,不同前驱体C/C复合材料电导率有较大的差异,热解炭基C/C复合材料的电导率是沥青炭基C/C复合材料和树脂炭基C/C复合材料电导率近3倍,热解炭和沥青炭双基体C/C复合材料的电导率符合简单并联混合法则,树脂炭和沥青炭双基体C/C复合材料的电导率随树脂炭质量分数的增加而减小。

Pyrocarbon-matrix, resin-matrix, pitch-matrix C/C composite and pyrocarbon/piteh dual-matrix , resin/pitch dual-matrix C/C composites were prepared respectively with needle-punched carbon felt as reinforcement. The relation was researched and compared between content of different precursor matrix and conductivity. The results showed that C/C composites with different precursor matrix exhibi~ a great difference on conductive properties, the conductivities of resin-matrix C/C composite and pitch-matrix C/C composite are three times bigger than that of pyrocarbon C/C composites. Pyroearbon and pitch dual-matrix C/C composite conductivity accords with the simple parallel connection principle. Pitch and resin dual-matrix C/C composite conductivity is the linear function of the resin carbon mass percent.