CO_(2)激光参数对去除碳纤维复合材料表面涂层的调控规律研究

Study on the regulation of CO_(2)laser parameters on the removal of CFRP surface paints

激光除漆是近年来飞速发展的新型“绿色”除漆技术。针对目前化学处理、人工打磨等方式去除碳纤维增强复合材料(CFRP)表面涂层效率低以及对环境不友好等问题,开展CO_(2)激光去除CFRP表面涂层的调控规律和去除机理研究。重点研究了扫描次数、光斑重叠率、扫描速度和激光功率等参数对厚度约为100μm的涂层去除影响规律,并获得较为优化处理参数。结果表明,当光斑重叠率为95.75%、扫描速度为170 mm/s、激光功率为44 W时,扫描处理一次就可以有效地去除CFRP表面涂层,且对CFRP表层纤维的损伤程度最小。结果为深入研究去除CFRP表面不同厚度和种类的涂层提供参考。

Laser cleaning is a new"green"paint removal technology developing rapidly in recent years.To address the problems of low efficiency and environmental unfriendliness in removing the surface paint of carbon fiber reinforced composites(CFRP)by chemical treatment and manual polishing,this work studied the regulation law and the removal mechanisms of CFRP surface paint cleaning by CO_(2)laser.The parameters such as the number of scans,beam overlap rate,scan speed,and laser power were studied on the cleaning behavior of the paint with a thickness of about 100μm,and relatively optimized treatment parameters were obtained.The results indicated that when the beam overlap rate was 95.75%,the scanning speed was 170 mm/s,and the laser power was 44 W,the paint can be effectively removed in one scanning treatment with minimal damage to the fibers.The results provide a reference for further research removal of different thicknesses and types of CFRP surfaces.