石墨烯/聚乙烯杂化纳米纤维交错增韧CF/EP复合材料的层间多尺度增韧

IF 14.2 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering Pub Date : 2025-07-21 DOI:10.1016/j.compositesb.2025.112846

Mingming Yu , Hongxiang Liu , Jiaxin Ma , Xiaolei Wang , Jingbin Dai , Wang Xie , Lin Fang , Musu Ren , Jinliang Sun

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引用次数: 0

摘要

层间韧性低导致的分层是层合复合材料的主要失效模式，严重影响复合材料的使用寿命。将静电纺丝制备的石墨烯/聚醚砜（PES）杂化纳米纤维插入碳纤维/环氧树脂（CF/EP）复合材料的层间，通过纳米纤维在环氧树脂基体中的溶解作用，实现层间多尺度增韧，增韧效果较好。石墨烯含量为1.5 wt%时，与CF/EP复合材料相比，GIC和GIIC分别提高了115%和128%。此外，ILSS、抗弯强度和存储模量分别提高了7%、8%和13%。而仅插入PES纳米纤维的复合材料的GIC和GIIC分别提高了6%和4%，力学性能下降。微观结构分析表明，增韧机理主要是PES和EP形成的半互穿聚合物网络结构与石墨烯引起的钉钉效应和裂纹偏转共同作用的结果。这种基于纳米纤维嵌入的多尺度增韧方法为高损伤容限复合材料的设计提供了一种新的策略。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Interlaminar multiscale toughening of CF/EP composites by interleaving Graphene/PES hybrid nanofibers

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Interlaminar multiscale toughening of CF/EP composites by interleaving Graphene/PES hybrid nanofibers

The delamination caused by low interlaminar toughness are the main failure modes of laminated composites, which seriously affect the service life of the composites. Graphene/polyether sulfone (PES) hybrid nanofibers prepared by electrospinning are inserted into the interlayer of carbon fiber/epoxy resin (CF/EP) composites, and interlaminar multiscale toughening with better toughening effect is achieved through the dissolution of the nanofibers in the EP matrix. The highest G_IC and G_IIC are obtained when the graphene content is 1.5 wt%, which are increased by 115 % and 128 % respectively compared with CF/EP composites. In addition, the ILSS, flexural strength and storage modulus increased by 7 %, 8 % and 13 %, respectively. While the G_IC and G_IIC of composites intercalated only by PES nanofibers are increased by 6 % and 4 % respectively, as well as degraded mechanical properties. Microstructure analysis shows that the toughening mechanism is mainly attributed to the combined effect between the semi interpenetrating polymer network structure formed by PES and EP and the pinning effect and crack deflection induced by graphene. This multiscale toughening method based on nanofiber intercalation provides a new strategy for the design of composites with high damage tolerance.

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来源期刊

Composites Part B: Engineering 工程技术-材料科学：复合

CiteScore

24.40

自引率

11.50%

发文量

784

审稿时长

21 days

期刊介绍： Composites Part B: Engineering is a journal that publishes impactful research of high quality on composite materials. This research is supported by fundamental mechanics and materials science and engineering approaches. The targeted research can cover a wide range of length scales, ranging from nano to micro and meso, and even to the full product and structure level. The journal specifically focuses on engineering applications that involve high performance composites. These applications can range from low volume and high cost to high volume and low cost composite development. The main goal of the journal is to provide a platform for the prompt publication of original and high quality research. The emphasis is on design, development, modeling, validation, and manufacturing of engineering details and concepts. The journal welcomes both basic research papers and proposals for review articles. Authors are encouraged to address challenges across various application areas. These areas include, but are not limited to, aerospace, automotive, and other surface transportation. The journal also covers energy-related applications, with a focus on renewable energy. Other application areas include infrastructure, off-shore and maritime projects, health care technology, and recreational products.