原位聚合法得到聚酰胺酸(PAA)/炭黑(CB)聚合物溶液,通过静电纺丝、热亚胺化制备了聚酰亚胺(PI)/炭黑复合纳米纤维膜,经过热压加工工艺得到以炭黑为填料的聚酰亚胺基导电复合材料.扫描电镜(SEM)和透射电镜(TEM)观察了复合材料的微观形貌,通过LCR数字电桥、拉伸测试和热重分析(TGA)研究了复合材料的电学性能、力学性能与热稳定性.实验表明,PI/CB导电复合材料的渗流阈值为6％(质量分数);在渗流阈值时,材料的拉伸强度和断裂伸长率分别为93.9 MPa和68.9％,10％热失重温度为575.8℃.聚酰亚胺/炭黑导电复合材料表现出优异的力学性能和热稳定性能.
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