PBT材料三维激光表面改性系统分析  

Analysis of PBT 3D Laser Surface Modification System

作　　者：王萌[1] 刘铁根[1] 赵玛利[1] 王博[1] 霍晓飞[1] 许宝忠[1] 张国顺[1] 

机构地区：[1]天津大学精密仪器与光电子工程学院,光电信息技术科学教育部重点实验室,天津300072

出　　处：《天津大学学报》2011年第11期1019-1023,共5页Journal of Tianjin University(Science and Technology)

基　　金：国家重点基础研究发展计划(973计划)资助项目(2010CB327800)

摘　　要：传统加工方法很难在非金属材料表面实现指定区域的三维金属化,而利用激光三维立体照射聚对苯二甲酸丁二醇酯(PBT)材料表面,可使得指定区域内的材料特性发生改变,而没有经过激光照射的区域仍然保持原有的特性,从而实现选择性化学镀.实验采用ND:YAG激光器,经声光调制后,通过动态聚焦系统和二维振镜实现三维扫描,并利用f-θ透镜聚焦.阐述了激光三维改性系统的组成和原理,动态聚焦镜的光学分析及对聚焦光斑的影响.通过PBT材料激光表面改性实验,给出扫描电子显微镜观察改性后的表面形貌分析,得到激光改性后的材料新特性及激光光束参数变化对表面改性的影响规律.3D high-precision metallization in specific nonmetallic areas is very difficult for the traditional process. The designated area in the surface of polybutylene terephthalate （PBT）, which was radiated by 3D laser, took on some new material characteristics. However, the non-irradiated area still remained the original nonmetal quality. By this means, a selective chemical plating was able to be realized. The ND： YAG laser beam, after going through dynamic focusing system, was reflected by 2D galvanometers and then focused by f-0 lens on the surface of PBT. The principle and composition of 3D laser system, optical analysis of the dynamic focus lens and the influence on focused spot were illustrated in details. Through the SEM analytic result of irradiating experiments of PBT surface modification, the new characters and the effects of laser parameters on PBT surface modification are concluded.

关 键 词：激光技术 激光三维扫描 表面改性 聚对苯二甲酸丁二醇酯 动态聚焦镜 

分 类 号：TN249[电子电信—物理电子学]