摘要
采用溶胶-凝胶法合成了酮酐型聚酰胺酸(PAA),经高压静电纺丝过程得到PAA纳米纤维,热亚胺化之后得到聚酰亚胺(PI)纳米纤维,再经过600℃到1 000℃的高温碳化制得PI基碳纤维,炭化的产率小于42%。用扫面电镜(SEM)表征了不同碳化温度下的PI纳米纤维的形貌。分析结果表明,在碳化过程中,纤维间出现扭转、弯曲和粘连的现象。
The polyamic acid（PAA） based on benzophenonetetracarboxylic dianhydride and 4,4-oxydianiline （BTDA-ODA） was prepared by the sol-gel process. The non-woven membranes of polyimide for insula- tion were prepared by electrostatic spinning the polyamic acid solution, followed by thermal imidization and carbonisation. Imidized webs were carbonized in the temperature range from 600℃ to 1 000℃ under a nitrogen atmosphere with yields less than 42%. The scanning electron microscopy images of the carbonized non-woven fabrics show that the phenomena such as twisting, bending, and adhesion exist within the fibers after carbonization.
出处
《绝缘材料》
CAS
2008年第4期49-51,55,共4页
Insulating Materials
基金
黑龙江省青年基金EVOH磺酸锂单离子梳型锂离子电池隔膜的研究(E200617)
2007年黑龙江高等学校青年学术骨干项目(1152G011)
关键词
聚酰胺酸
静电纺丝
碳纤维
polyamic acid
electrostatic spinning
carbon fiber
