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343 nm飞秒激光制备微孔阵列以增强聚氨酯合成革透湿性

郭亮 任博 王业伟 涂昕 张庆茂

郭亮, 任博, 王业伟, 等. 343 nm飞秒激光制备微孔阵列以增强聚氨酯合成革透湿性[J]. 强激光与粒子束, 2018, 30: 049001. doi: 10.11884/HPLPB201830.170044
引用本文: 郭亮, 任博, 王业伟, 等. 343 nm飞秒激光制备微孔阵列以增强聚氨酯合成革透湿性[J]. 强激光与粒子束, 2018, 30: 049001. doi: 10.11884/HPLPB201830.170044
Guo Liang, Ren Bo, Wang Yewei, et al. Improving water vapor permeability of polyurethane synthetic leather by drilling micro-hole arrays with 343 nm femtosecond laser[J]. High Power Laser and Particle Beams, 2018, 30: 049001. doi: 10.11884/HPLPB201830.170044
Citation: Guo Liang, Ren Bo, Wang Yewei, et al. Improving water vapor permeability of polyurethane synthetic leather by drilling micro-hole arrays with 343 nm femtosecond laser[J]. High Power Laser and Particle Beams, 2018, 30: 049001. doi: 10.11884/HPLPB201830.170044

343 nm飞秒激光制备微孔阵列以增强聚氨酯合成革透湿性

doi: 10.11884/HPLPB201830.170044
基金项目: 

国家重点研发计划项目 2017YFB1104500

广东省自然科学基金项目 2016A030313456

广东省科技项目 2013B090600045

广东省科技项目 2013B090200003

广东省科技项目 2014B010131004

广东省科技项目 2014B010124002

广东省科技项目 2014B090903014

广东省科技项目 2015B090920003

广东省科技项目 2016B090917002

广东省研究生教育创新计划项目 2013JDXM23

广州市科技计划项目 201604040006

详细信息
    作者简介:

    郭亮(1968—),男,博士,高级工程师,从事激光先进制造技术等方面的研究; 15323310190@163.com

    通讯作者:

    张庆茂(1966—),男,博士,教授,从事激光先进制造技术等方面的研究; zhangqm@scnu.edu.cn

  • 中图分类号: O439

Improving water vapor permeability of polyurethane synthetic leather by drilling micro-hole arrays with 343 nm femtosecond laser

  • 摘要: 为了提高聚氨酯(PU)合成革透湿性,分别使用343 nm飞秒激光和作为对比的1030 nm飞秒激光及1064 nm纳秒激光制备微孔阵列。采用扫描电镜(SEM)和3D激光扫描显微镜对比研究了微孔形貌。结果表明,343 nm飞秒激光可以制备出效果最佳的微孔。此外,分析了3种激光与PU涂层的作用机理,揭示了343 nm飞秒激光合成革微钻孔过程仅表现为光化学烧蚀,光化学和光热烧蚀同时发生于1030 nm飞秒激光钻孔过程,而1064 nm纳秒激光只显示了光热烧蚀。激光合成革表面钻孔后,测量其透湿性和抗张力。结果显示: 微孔密度越大,皮革透湿性(WVP)越大而抗张力越低,脉冲重叠的增加会导致WVP的增加和抗张力的下降;同时,随着脉冲重叠从91.7%降到50%,微孔直径从45 μm降低到30 μm,而微孔锥度从0.7°增加到12.1°;当脉冲重叠率为91.7%,微孔密度为2550/cm2时,最大的WVP增长率为306%。
  • 图  1  在焦平面上激光扫描速度200 mm/s加工微孔的SEM全局图和局部放大图

    Figure  1.  SEM overview and magnification images of micro-holes drilled with a focus beam at 200 mm/s

    图  2  不同激光诱导结构相应的能谱图(探测区域已在图 1中标示)

    Figure  2.  EDS from different representative regions in an area of laser-induced structure (test spots are marked in Fig. 1)

    图  3  图 1的PU层表面激光处理区图像

    Figure  3.  Pictures of laser-drilled area on PU film of Fig. 1

    图  4  343 nm飞秒激光以不同速度得到的微孔的正面和截面3D扫描显微形貌图

    Figure  4.  Front view and cross-sectional images by 3D laser scanning microscope of micro-holes drilled by femtosecond laser at 343 nm with different velocity

    图  5  扫描速度固定时,WVP值随微孔密度变化关系图

    Figure  5.  Water vapor permeability (WVP) value vs micro-hole density at fixed laser scanning speed

    图  6  微孔密度固定时,WVP值随脉冲重叠变化关系图

    Figure  6.  Water vapor permeability (WVP) value vs pulse overlap at fixed micro-hole density

    图  7  扫描速度固定时,抗张力随着微孔密度变化关系图

    Figure  7.  Tensile resistance vs micro-hole density at fixed scanning speed

    图  8  微孔密度固定时,抗张力随着脉冲重叠变化关系图

    Figure  8.  Tensile resistance vs pulse overlap at fixed micro-hole density

    表  1  激光器的详细参数

    Table  1.   Specification parameters of lasers

    laser average power/W wavelength/nm pulse duration frequency/kHz focal spot diameter/μm beam quality
    YDFLP-20-LP1-S >20 1064 200 ns 1~400 45 < 1.3
    S-Pulse HP2 >8 1030 < 500 fs 1~300 38 < 1.3
    S-Pulse HP2 < 1 343 < 500 fs 1~300 12 < 1.3
    下载: 导出CSV

    表  2  PU合成革激光打孔参数

    Table  2.   Laser-drilled parameters of PU synthetic leather

    micro-hole spacing/mm micro-hole density/cm-2 scan velocity/(mm·s-1)
    50
    100
    0.2 2550 200
    300
    50
    100
    200
    0.5 420 300
    50
    100
    1 110 200
    300
    2 30 50
    100
    200
    300
    下载: 导出CSV
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出版历程
  • 收稿日期:  2017-06-27
  • 修回日期:  2017-10-23
  • 刊出日期:  2018-04-15

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