Construction of a double-crosslinked interphase to optimize the interfacial properties of carbon fiber-reinforced polyether ether ketone composites

IF 8.1 2区材料科学 Q1 ENGINEERING, MANUFACTURING

Composites Part A: Applied Science and Manufacturing Pub Date : 2025-04-08 DOI:10.1016/j.compositesa.2025.108939

Chengzhi Qin , Shengtao Dai , Wei Wang , Jintang Duan , Fei Yan , Liu Liu

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Abstract

To address the insufficient interfacial bonding of carbon fiber/polyether ether ketone (CF/PEEK) composites, a strategy combining the diazotization reaction and sizing treatment was meticulously designed to achieve a significant synergistic enhancement. Specifically, cyano groups were grafted onto the CF surface, and self-catalyzed crosslinkable hydroxy-terminated polyaryl ether nitrile ketone (PENK-OH) sizing agent was prepared. The hydroxyl group acts as an end-capping agent for the sizing agent, considerably accelerating the rate of cyano crosslinking and effectively increasing the thermal stability of the sizing agent. Consequently, strong interactions were established between cyano-modified CF and the PENK-OH sizing agent via double crosslinking reactions. Compared to untreated-CF/PEEK composites, the CF-CN-1.0%/PEEK composites exhibited increases of 45.4%, 43.5% and 35.9% in the maximum interfacial shear strength, interlaminar shear strength and flexural strength, respectively. The strong synergistic interfacial interactions promoted by the chemical bonds between the different components provide an effective method for producing high-performance CF/PEEK composites.

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构建双交联界面相优化碳纤维增强聚醚醚酮复合材料的界面性能

为了解决碳纤维/聚醚醚酮（CF/PEEK）复合材料界面结合不足的问题，精心设计了重氮化反应和施胶处理相结合的策略，以实现显著的协同增强。具体而言，将氰基接枝到CF表面，制备了自催化交联的端羟基聚芳醚腈酮（PENK-OH）施胶剂。羟基作为施胶剂的端盖剂，大大加快了氰基交联的速度，有效地提高了施胶剂的热稳定性。结果表明，氰基改性CF与PENK-OH施胶剂通过双交联反应建立了强相互作用。与未处理的CF-CN-1.0%/PEEK复合材料相比，CF-CN-1.0%/PEEK复合材料的最大界面抗剪强度、层间抗剪强度和抗弯强度分别提高了45.4%、43.5%和35.9%。不同组分之间的化学键促进了强协同界面相互作用，为制备高性能CF/PEEK复合材料提供了有效的方法。

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来源期刊

Composites Part A: Applied Science and Manufacturing 工程技术-材料科学：复合

CiteScore

15.20

自引率

5.70%

发文量

492

审稿时长

30 days

期刊介绍： Composites Part A: Applied Science and Manufacturing is a comprehensive journal that publishes original research papers, review articles, case studies, short communications, and letters covering various aspects of composite materials science and technology. This includes fibrous and particulate reinforcements in polymeric, metallic, and ceramic matrices, as well as 'natural' composites like wood and biological materials. The journal addresses topics such as properties, design, and manufacture of reinforcing fibers and particles, novel architectures and concepts, multifunctional composites, advancements in fabrication and processing, manufacturing science, process modeling, experimental mechanics, microstructural characterization, interfaces, prediction and measurement of mechanical, physical, and chemical behavior, and performance in service. Additionally, articles on economic and commercial aspects, design, and case studies are welcomed. All submissions undergo rigorous peer review to ensure they contribute significantly and innovatively, maintaining high standards for content and presentation. The editorial team aims to expedite the review process for prompt publication.