Rapid surface modification of CFRP via femtosecond laser-assisted by chemical approach to enhance adhesive performance

Yanping Yuan*, Xiaoran Guo, Yuhan Gu, Dongfang Li*, Kaihu Zhang, Weina Han

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

摘要

The increasing demand for lightweight materials has made adhesive bonding a primary method for connecting CFRP. Enhancing the surface quality of adhesive joints is crucial for achieving higher adhesive performance. Femtosecond laser treatment is recognized for its unique advantages in CFRP surface treatment but often faces challenges with spot size and surface quality. This study proposes an efficient method for preparing high-adhesive CFRP surfaces using a femtosecond laser assisted by nitric acid and ultrasonic treatment. By optimizing the laser and nitric acid-ultrasonic treatment parameters, a high-quality surface suitable for strong adhesive joints is achieved. The results indicate that this approach enhances the tensile shear strength of bonded CFRP by approximately 48.0 %. Remarkably, the laser pretreatment for a 12.5 mm × 25.0 mm area can be completed in just 150 s, increasing laser processing efficiency by a factor of approximately 226. The reasons for this enhanced performances are closely related to the synergetic effects of surface prepared method, which increases roughness (48.3 nm), surface free energy (74.8 mJ/m2), and the O/C ratio (33.3 %) with more oxygen-containing functional groups. This research provides valuable technical and theoretical guidance for the preparation of high-bond strength CFRP joints.

源语言英语
文章编号102200
期刊Composites Communications
53
DOI
出版状态已出版 - 1月 2025

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引用此

Yuan, Y., Guo, X., Gu, Y., Li, D., Zhang, K., & Han, W. (2025). Rapid surface modification of CFRP via femtosecond laser-assisted by chemical approach to enhance adhesive performance. Composites Communications, 53, 文章 102200. https://doi.org/10.1016/j.coco.2024.102200