新型炭材料Issue(2)：115-121,7.DOI:10.1016/S1872-5805(15)60179-2
炭纤维表面聚酰亚胺涂层的制备及表征
Preparation and characterization of a polyimide coating on the surface of carbon fibers
摘要
Abstract
Organic, solvent-free polyamic acid sizing was coated onto T300 grade carbon fibers (3k) to prepare a polyimide (PI) coating having a high thermal stability and oxidative resistance. The surface of PI-coated carbon fibers was characterized by FTIR and SEM. The mechanical strength of the carbon fibers, thermal stability and oxidative resistance of the coating were also investiga-ted. Results indicate that a continuous and uniform PI coating is formed on the surface of the carbon fibers. Compared to a carbon fiber coating with epoxy, the PI coating produces excellent thermal stability with onset decomposition and a 5% weight-loss tempera-tures of 567 and 619 ℃, respectively. The tensile strength of PI-coated carbon fibers after thermal oxidation in air at 400 ℃ for 1 h has only a slight decrease of 6%, which is significantly lower than the decrease of 22% for epoxy-coated fibers.关键词
炭纤维/表面改性/热稳定性/聚酰亚胺涂层Key words
Carbon fiber/Surface modification/Thermal stability/Polyimide coating分类
化学化工引用本文复制引用
原浩杰,吕春祥,张寿春,吴刚平..炭纤维表面聚酰亚胺涂层的制备及表征[J].新型炭材料,2015,(2):115-121,7.基金项目
国家自然科学基金(50602045).@@@@National Natural Science Foundation of China (50602045) （50602045）
