1910 nm激光透射焊接同种透明聚苯乙烯工艺的研究

Study on the 1910 nm Laser Transmission Welding Process for the Same Transparent Polystyrene

本文使用波长为1910 nm的半导体激光器对聚苯乙烯(PS)透明塑料板材进行了无吸收剂激光透射焊接实验,研究了激光功率、焊接速度以及线能量等参数对试件的焊接效果的影响。实验结果表明,1910 nm半导体激光器可以实现对同种聚苯乙烯透明塑料的无吸收剂焊接,且焊接效果优异。在线能量为3 J/mm时,得到了较为理想的焊接试件,焊缝形貌均匀规整,可承受的拉断力达到707 N,可满足食品、医疗等对塑料制品卫生标准要求较高的塑料加工领域的需求。本研究具有广阔的应用前景,对替代传统塑料焊接(超声焊接、摩擦焊接等)以及传统激光塑料焊接(需添加吸收剂)具有重要的研究意义。

This study conducted the absorbent-free laser transmission welding experiments on the transparent polystyrene(PS)plastic sheets using a semiconductor laser with a wavelength of 1910 nm.The research investigated the influences of laser power,welding speed,and line energy on the welding effects of the specimens.The results show that the 1910 nm semiconductor laser could achieve the absorbent-free welding of the same polystyrene transparent plastics,and the welding results are excellent.With a line energy of 3 J/mm,the obtained welded specimen exhibits uniformly and regular welds,and its tensile strength reaches 707 N.It could meet the needs of food,medical and other plastic processing fields with higher health standards for plastic products.This research has broad application prospects and is significant for replacing traditional plastic welding methods(such as ultrasonic soldering and friction welding)and traditional laser plastic welding(absorbent-required).