基于锌粉吸收剂的聚芳砜焊接质量研究  

Study on Welding Quality of Polysulfone Based on Zinc Powder Absorbent

作　　者：陈雅妮 于晓东 王超 王传洋[1] Chen Yani;Yu Xiaodong;Wang Chao;Wang Chuanyang(School of Mechanical and Electric Engineering,Soochow University,Suzhou,Jiangsu 215021,China)

机构地区：[1]苏州大学机电工程学院,江苏苏州215021

出　　处：《应用激光》2022年第10期18-24,共7页Applied Laser

基　　金：国家自然科学基金(52075354)。

摘　　要：采用半导体激光器对填充锌粉吸收剂的聚芳砜(PASF)进行了激光透射焊接试验,以不同锌粉质量为因素,探究锌粉吸收剂对PASF焊接效果及焊缝形貌的影响。进行了焊接件剪切强度测试,分析了锌粉吸收剂质量对剪切强度的影响;观察了焊件表面形貌及焊缝宽度,应用扫描电子显微镜观测焊缝熔池微观形貌,并对焊缝横截面宏观形貌和熔融锌粉颗粒界面进行分析。结果表明:锌粉吸收剂对PASF焊接质量影响较大,当锌粉质量为16.8 mg时,焊接效果最好;熔融状态下存在聚合物分子链扩散缠绕、锌粉颗粒被聚合物包裹以及锌粉颗粒吸引连接现象,并都对焊接强度产生积极作用。A semiconductor laser was used to conduct laser transmission welding experiments on polyarylsulfone(PASF) filled with zinc powder absorber and the influence of zinc powder absorber on PASF welding effect and weld morphology was explored with different mass of zinc powder absorber in this paper. Firstly, the shear strength of welded parts was tested and the influence of zinc powder absorbent on the shear strength was analyzed. Secondly, the surface morphology and weld width of welds were observed, and the microstructure of weld pool was observed by scanning electron microscope, and the macroscopic morphology of weld cross section and interface of molten zinc particles were analyzed. The results showed that the zinc powder absorber has a greater impact on the welding of PASF and the best welding effect was got when the zinc powder mass is 16.8 mg. Phenomena such as polymer molecular chain diffusion entanglement, zinc powder particles wrapped by PASF and connected zinc powder particles, in the molten state, have a positive effect on the welding strength.

关 键 词：激光透射焊接 锌粉吸收剂 焊接质量 焊缝形貌 

分 类 号：TG456.7[金属学及工艺—焊接]