复合材料科学与工程Issue(11)：88-91,142,5.DOI:10.19936/j.cnki.2096-8000.20241128.012
超支化聚酰亚胺上浆剂对碳纤维增强聚醚醚酮复合材料力学性能的影响
Effect of hyperbranched polyimide sizing agent on mechanical properties of carbon fiber reinforced poly(ether-ether-ketone)
摘要
Abstract
Poly(ether-ether-ketone)(PEEK)has excellent properties,but there is a low interface strength between carbon fiber(CF)and PEEK due to the inert PEEK chains and the difficulty of forming the chemical bond with CF.To solve this problem,hyperbranched polyimide sizing agent was used to improve the interfacial properties of the composite.Firstly,hyperbranched polyimide was prepared by two-step method,and then the surface of car-bon fiber was modified by sizing with hyperbranched polyimide by chemical grafting.The experimental results show that after sizing with hyperbranched polyimide,the surface roughness of carbon fiber increases.And the surface en-ergy is increased to 48.0 mN/m,while the polar component of surface energy is decreased,indicating that its wetta-bility with non-polar resin is improved.Moreover,the interlaminar shear strength and tensile strength of the modi-fied carbon fiber reinforced PEEK composites have been increased by 52.4%and 39.8%,respectively,compared to the unmodified ones.关键词
碳纤维/复合材料/聚醚醚酮/聚酰胺/上浆/改性Key words
carbon fiber/composite/PEEK/PI/sizing/modification分类
通用工业技术引用本文复制引用
朱敏杰,魏陇沙,孔文锋,晏义伍..超支化聚酰亚胺上浆剂对碳纤维增强聚醚醚酮复合材料力学性能的影响[J].复合材料科学与工程,2024,(11):88-91,142,5.基金项目
中央引导地方科技发展资金项目(2021Szvup086) （2021Szvup086）
