超快激光合成革透湿性结构制备

发布时间：2018-05-19 04:25

  本文选题：激光材料加工 + PU合成革　； 参考：《应用激光》2017年03期

【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400fs,重复频率为50kHz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 the laser processing of synthetic leather, it is difficult to solve the structural damage caused by long pulse laser processing of synthetic leather, so the physical processing method of pu synthetic leather material is made by ultra-fast laser. Laser with a pulse width of 400fs and a repetition rate of 50kHz was used to drill holes. The stress distribution and gas flow rate of different hole placement modes were analyzed by using finite element analysis software simulation. By adjusting laser power, defocus, wavelength, scanning line speed, the size of the perforated hole, and the arrangement of holes, etc., it is concluded that the square hole arrangement method has higher tear resistance and air permeability, and then by adjusting the laser power, defocus, wavelength, scanning line speed, the size of the hole, etc. Find out a set of suitable parameters for the laser instrument, and verify the effect of arrangement mode on the tear strength and water permeability of leather with different hole arrangement. Finally, changing the number of pores makes the pu synthetic leather meet the requirement of improving the permeability of water and gas by 15%, and the tear strength is not less than 60% of the untreated material.
【作者单位】： 广东省微纳光子功能材料与器件重点实验室;
【基金】：广东省大学生创新计划支持项目 2014年广东省科技计划-协同创新与平台环境建设专项资助项目(项目编号:2014B010131004);2014年广东省科技计划-省级前沿与关键技术创新专项资助项目(项目编号:2014B010131004);2014年广东省科技计划-省级前沿与关键技术创新专项资助项目(项目编号:2014B010124002) 2013年广东省科技计划-省部产学研结合资助项目(项目编号:2013B090600045) 2013年广东省研究生教育创新计划资助项目(项目编号:2013JDXM23) 2016年广东省自然科学基金资助项目(项目编号:2016A030313456)
【分类号】：TN249;TS54
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本文编号：1908711