中国光学（中英文）2026，Vol.19Issue(3)：558-572,15.DOI:10.37188/CO.2026-0007
离焦状态对激光清洗CFRP表面涂层的影响及清洗机制
Influence of defocused state on laser cleaning of surface painting on CFRP and it's cleaning mechanism
摘要
Abstract
Carbon fiber-reinforced polymer(CFRP)composites are usually covered with paint in practical applications.To achieve the nondestructive removal of the surface paint on CFRP and improve the recycling rate of CFRP,we investigated the cleaning effect and mechanism of infrared high-repetition-rate pulsed lasers on the surface paint of CFRP under different defocus distances.First,when the defocus distance was 40 mm,the surface paint of CFRP was cleaned by adjusting the power and scanning speed,and the cleaning effect was observed to obtain relatively optimized process parameters.On this basis,the paint was treated by varying the defocus distance.Finally,the cleaned samples were characterized and analyzed in terms of sur-face morphology,elemental composition and contact angle,so as to obtain the cleaning effect,the contact angle variation law and the cleaning process under different defocus distances.The results show that with an increase in the defocus distance,the cleaning process transforms from vaporization to a heat accumulation ef-fect,and proper heat accumulation contributes to the complete removal of paint and resin.When the power,scanning speed and defocus distance are 25 W,720 mm/s and 40 mm respectively,the paint can be com-pletely removed without damaging the carbon fibers,while effectively improving the surface wettability of the substrate.关键词
激光清洗/离焦距离/碳纤维复合材料/表面形貌/清洗机制Key words
laser cleaning/defocus distance/carbon fiber composite materials/surface morphology/clean-ing mechanism分类
信息技术与安全科学引用本文复制引用
李麟,张浩,李道鑫,赵磊,杨永佳,赵万利,王毕艺,蒋勇..离焦状态对激光清洗CFRP表面涂层的影响及清洗机制[J].中国光学（中英文）,2026,19(3):558-572,15.基金项目
国家自然科学基金(No.12372212,No.11972313) （No.12372212,No.11972313）
中央引导地方科技发展资金资助(No.202502ZYDF045) （No.202502ZYDF045）
电磁空间安全全国重点实验室基金(No.2022JCJQLB055007)Supported by National Natural Science Foundation of China(No.12372212,No.11972313) （No.2022JCJQLB055007）
The Central Gov-ernment Guided Local Science and Technology Development Fund Projects(No.202502ZYDF045) （No.202502ZYDF045）
The Opening Funding of National Key Laboratory of Electromagnetic Space Security(No.2022JCJQLB055007) （No.2022JCJQLB055007）
