磺化聚芳醚酮上浆剂的制备及其对CF/PEEK复合材料性能的影响

doi:10.19936/j.cnki.2096-8000.20260928.006

摘要/Abstract

摘要： 碳纤维增强聚醚醚酮(CF/PEEK)复合材料在航空航天领域具有广泛的应用前景。但是,碳纤维表面呈惰性,与基体PEEK相容性较差,导致碳纤维与PEEK之间界面结合较弱,限制了CF/PEEK复合材料的应用。因此,本研究利用磺化法制备磺化聚芳醚酮(SPEKC)上浆剂,然后利用SPEKC上浆剂对碳纤维表面进行上浆改性,并对碳纤维表面形貌、结构以及CF/PEEK复合材料的界面与力学性能进行研究,分析界面增强机理。研究结果表明,磺酸基提高了SPEKC上浆剂的亲水性和稳定性。经磺化3 h的SPEKC复合材料改性CF/PEEK复合材料具有最佳的力学性能,其弯曲强度和层间剪切强度分别达到了1 232.61 MPa和73.57 MPa,相比于未改性的CF/PEEK复合材料分别提升了14.8%和6.2%。

关键词: 碳纤维, 聚芳醚酮, 磺化, 聚醚醚酮, 力学性能

Abstract: Carbon fiber-reinforced poly(ether ether ketone) (CF/PEEK) composites exhibit broad application prospects. However, due to the inert surface and low wettability of CF, the weak interfacial bonding between CF and PEEK limits the performance enhancement of CF/PEEK composites. To address this issue, in this study a flexible polymer sizing agent-sulfonated poly(aryl ether ketone) (SPEKC) is employed to modify the surface of CF. The surface morphology and structure of CF, as well as the interfacial and mechanical properties of the composites are investigated. Also, the interfacial reinforcement mechanism is analyzed. The results indicate that the sulfonic acid groups enhance the hydrophilicity and stability of the SPEKC sizing agent. The CF/PEEK composite modified with SPEKC-3 exhibits the best mechanical properties, with flexural strength and interlaminar shear strength reaching 1 232.61 MPa and 73.57 MPa, respectively, representing improvements of 14.8% and 6.2% compared to unmodified CF/PEEK composites.

Key words: carbon fiber, SPEKC, sulfonation, PEEK, mechanical properties

中图分类号:

TB332

陈相, 吕楠, 王永林, 秦文贞, 白树林. 磺化聚芳醚酮上浆剂的制备及其对CF/PEEK复合材料性能的影响[J]. 复合材料科学与工程, 2026, 0(9): 51-59.

CHEN Xiang, LÜ Nan, WANG Yonglin, QIN Wenzhen, BAI Shulin. Preparation of sulfonated poly(aryl ether ketone) sizing agent and its effect on CF/PEEK composites[J]. COMPOSITES SCIENCE AND ENGINEERING, 2026, 0(9): 51-59.

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