飞秒激光制备CFRP微纳结构表面的润湿现象研究  

Study on the Wetting Phenomenon of the Surface of CFRP Micro-Nano Structure Prepared by Femtosecond Laser

作　　者：刘思琦 刘克 张明池 陶海岩[1] LIU Siqi;LIU Ke;ZHANG Mingchi;TAO Haiyan(School of Physics,Changchun University of Science and Technology,Changchun 130022)

机构地区：[1]长春理工大学物理学院,长春130022

出　　处：《长春理工大学学报（自然科学版）》2022年第6期15-22,共8页Journal of Changchun University of Science and Technology(Natural Science Edition)

基　　金：吉林省科技厅自然科学基金(20200201250JC)。

摘　　要：碳纤维增强复合材料(Carbon fiber reinforced plastic/polymer,简称CFRP)是一种密度小、强度高的材料,但是其自身表面光滑,胶粘剂在其表面浸润性差,在与其他材料复合使用时胶接强度低,无法满足强度要求。通过改变飞秒激光的扫描速度来调控CFRP的表面形貌的方式提高CFRP表面的润湿性,针对飞秒激光处理CFRP表面的加工效果进行结果分析,研究了飞秒激光的扫描速度对表面加工效果的影响,从而获得微纳结构的精确调控策略,制备出适用于胶接之前的最佳润湿表面。结果表明,扫描速度为1.2 m/s时,处理后的CFRP表面与甘油的最小接触角是22.42°,与水的接触角是61.13°。对于现阶段车企和航空事业领域的胶接之前的表面处理工艺具有重要意义。Carbon fiber reinforced plastic/polymer(CFRP)is a material with low density and high strength;however,its surface is smooth,the adhesive has poor wettability on its surface;then the bonding strength is low when used in combination with other materials and unable to meet the strength requirements.In this paper,the method of changing the scanning speed of the femto-second laser to adjust the surface morphology of the CFRP improves the wettability of the CFRP surface.The results are analyzed for the processing effect of the femto-second laser processing the CFRP surface;and the effect of the scanning speed of the femto-second laser is studied.So as to the precise control strategy of the micro-nano structure is obtained,the best wetting surface suitable for bonding is prepared before bonding.The result shows that when the scanning speed is 1.2 m/s,the minimum contact angle of the treated CFRP surface with glycerol is 22.42°and the contact angle with water is 61.13°.There is great significance to the surface treatment process before bonding in the current car companies and aviation industry.

关 键 词：飞秒激光 润湿性 碳纤维增强复合材料 微纳结构 表面能 

分 类 号：O531[理学—等离子体物理]