强激光与粒子束2018，Vol.30Issue(4)：158-164,7.DOI:10.11884/HPLPB201830.170044
343nm飞秒激光制备微孔阵列以增强聚氨酯合成革透湿性
Improving water vapor permeability of polyurethane synthetic leather by drilling micro-hole arrays with 343 nm femtosecond laser
摘要
Abstract
In this paper,343 nm femtosecond laser and as a comparison,1030 nm femtosecond and 1064 nm nanosecond la-sers were used for improving water vapor permeability (WVP)of polyurethane (PU)synthetic leather.The morphologies of mi-cro-hole were comparatively studied via a scanning electron microscope (SEM)and a 3D laser scanning microscope.The results indicated that 343 nm femtosecond laser was optimal to obtain excellent and small drilled micro through-holes.Moreover,analysis of interaction mechanism between laser beam and PU film revealed that the micro-drilling by 343 nm femtosecond laser exhibited photochemical ablation only,micro-drilling by 1030 nm femtosecond laser caused both photochemical and photothermal ablation, while micro-holes drilled by 1064 nm nanosecond laser resulted in photothermal ablation.By measuring the WVP and tensile re-sistance of the laser-drilled leather,it was concluded that the higher micro-hole density,the higher WVP value and lower tensile resistance,and the increase of pulse overlap led to an increase of WVP and a decrease of tensile resistance.The diameter of micro-hole decreased from 45 μm to 30 μm and taper of micro-hole increased from 0.7°to 12.1°with pulse overlap decreased from 91.7% to 50%.And,the highest WVP growth ratio was 306% at 2550 per sq.cm and the pulse overlap was 91.7%.关键词
343nm飞秒激光/微孔密度/脉冲重叠/聚氨酯合成革/透湿性/抗张力Key words
343 nm femtosecond laser/micro-hole density/pulse overlap/polyurethane synthetic leather/water va-por permeability/tensile resistance分类
数理科学引用本文复制引用
郭亮,任博,王业伟,涂昕,张庆茂..343nm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(4):158-164,7.基金项目
国家重点研发计划项目(2017YFB1104500) （2017YFB1104500）
广东省自然科学基金项目(2016A030313456) （2016A030313456）
广东省科技项目(2013B090600045,2013B090200003,2014B010131004,2014B010124002,2014B090903014,2015B090920003,2016B090917002) （2013B090600045,2013B090200003,2014B010131004,2014B010124002,2014B090903014,2015B090920003,2016B090917002）
广东省研究生教育创新计划项目(2013JDXM23) （2013JDXM23）
广州市科技计划项目(201604040006) （201604040006）
