超快激光合成革透湿性结构制备

郭亮; 何哲; 陈祚堡; 朱晓玲; 黄龙虎; 蔡小军

doi:doi:10.14128/j.cnki.al.20173703.403

应用激光, 2017, 37 (3): 403, 网络出版: 2017-08-30

超快激光合成革透湿性结构制备

The Water Vapor Permeability Structure of Synthetic Leather Prepared by Ultrafast Laser

论文大纲

郭亮 ^*何哲陈祚堡朱晓玲黄龙虎蔡小军

作者单位

广东省微纳光子功能材料与器件重点实验室, 广东广州 510006

激光材料加工 PU合成革超快激光器 laser material processing PU synthetic leather ultrafast laser

摘要

在对人造皮革的激光加工中, 利用长脉冲激光加工人造合成革产生结构破坏难以解决, 因而利用超快激光对PU合成革材料打孔的物理加工方式。选用脉宽为400 fs, 重复频率为50 kHz的激光进行打孔, 结合有限元分析软件仿真, 分析不同布孔方式的应力分布和气体流量, 得出正方形的布孔方式具有比较高的抗撕裂能力和透水气能力; 然后通过调整激光功率、离焦量、波长、扫描线速度以及所打孔的大小, 布孔方式等, 寻找出一组对激光仪器适合的具体参数, 并对不同布孔方式的皮革进行抗撕裂强度和透水气性检测试验确认排列方式带来的影响与仿真吻合, 最终改变孔数使得到的PU合成革满足透水气性提高15%, 抗撕裂强度不低于未处理材料60%的要求。

Abstract

In laser processing of man-made leather, it is difficult to solve the problem that using long pulse laser to process artificial synthetic leather will destroy its structure. Therefore, firstly, this paper will use the physical processing method to drill PU synthetic leather materials with ultrafast laser and select the laser with pulse width of 400 fs and repetition frequency of 50 kHz to punch the materials. Secondly, combining with the finite element analysis software simulation, the paper will analyze the stress distribution and gas flow of different hole arrangements to get a square hole arrangement which has a relatively high tear resistance and gas permeable ability. Thirdly, it will find out a set of specific parameters for the laser instrument by adjusting the wavelength of laser power, defocusing amount, wave length, scanning speed, the size of punch, hole arrangement, and so on. At the same time, it will perform experiments to test the tearing strength and water vapor permeability of leathers of different hole arrangements and then confirms that the effects of arrangements are identical to the simulation. Ultimately, It will change hole number to meet the requirement that the water vapor permeability of the PU synthetic leather increases by 15% and the tearing strength is not less than 60% of unprocessed materials.

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郭亮, 何哲, 陈祚堡, 朱晓玲, 黄龙虎, 蔡小军. 超快激光合成革透湿性结构制备[J]. 应用激光, 2017, 37(3): 403. Guo Liang, He Zhe, Chen Zuobao, Zhu Xiaoling, Huang Longhu, Cai Xiaojun. The Water Vapor Permeability Structure of Synthetic Leather Prepared by Ultrafast Laser[J]. APPLIED LASER, 2017, 37(3): 403.

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