Investigation on laser paint stripping of CFRP: Morphological evolution, damage mechanism, and adhesive performance

Junyi Gu; Xuan Su; Wenqin Li; Meiling Xin; Donghe Zhang; Yang Jin; Jie Xu; Bin Guo

Journal of Materials Research and Technology (Jul 2024)

Investigation on laser paint stripping of CFRP: Morphological evolution, damage mechanism, and adhesive performance

Junyi Gu,
Xuan Su,
Wenqin Li,
Meiling Xin,
Donghe Zhang,
Yang Jin,
Jie Xu,
Bin Guo

Affiliations

Junyi Gu: School of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen, Shen Zhen, 518055, China; Key Laboratory of Micro-Systems and Micro-Structures Manufacturing of Ministry of Education, Harbin Institute of Technology, Harbin, 150080, China
Xuan Su: Zhengzhou Research Institute, Harbin Institute of Technology, Zhengzhou, 450046, China; Corresponding author.
Wenqin Li: School of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen, Shen Zhen, 518055, China; Key Laboratory of Micro-Systems and Micro-Structures Manufacturing of Ministry of Education, Harbin Institute of Technology, Harbin, 150080, China
Meiling Xin: School of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen, Shen Zhen, 518055, China; Key Laboratory of Micro-Systems and Micro-Structures Manufacturing of Ministry of Education, Harbin Institute of Technology, Harbin, 150080, China
Donghe Zhang: Key Laboratory of Micro-Systems and Micro-Structures Manufacturing of Ministry of Education, Harbin Institute of Technology, Harbin, 150080, China; Zhengzhou Research Institute, Harbin Institute of Technology, Zhengzhou, 450046, China
Yang Jin: School of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen, Shen Zhen, 518055, China
Jie Xu: Key Laboratory of Micro-Systems and Micro-Structures Manufacturing of Ministry of Education, Harbin Institute of Technology, Harbin, 150080, China; Zhengzhou Research Institute, Harbin Institute of Technology, Zhengzhou, 450046, China
Bin Guo: School of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen, Shen Zhen, 518055, China; Key Laboratory of Micro-Systems and Micro-Structures Manufacturing of Ministry of Education, Harbin Institute of Technology, Harbin, 150080, China; Zhengzhou Research Institute, Harbin Institute of Technology, Zhengzhou, 450046, China; Corresponding author. School of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen, Shen Zhen, 518055, China.

Journal volume & issue: Vol. 31
pp. 3690 – 3702

Abstract

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Damage to the substrate hinders the application of laser paint stripping (LPS) on carbon fiber reinforced polymers (CFRP), but the damage mechanism is currently unknown. In this paper, the LPS characteristics of CFRP, such as paint stripping depth, surface morphology and dynamic behavior, are firstly obtained. Subsequently, the surface damage mechanism of CFRP is discussed in detail by theoretical analysis and finite element method, and the effect of substrate damage on adhesive properties is investigated. The results show that it is difficult for LPS to obtain a complete surface free of paint residue. The strong laser plasma impact and resin pyrolysis pressure cause the resin to crack and flake before the paint is fully ablated. The carbon fiber then breaks and are thrown outward by heat and forces, and the surface with slightly fracture of the fiber will facilitate bonding with the paint.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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