飞秒激光刻蚀CF/EP表面疏水性能研究
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贵州省科技计划项目(No.黔科合支撑[2020]2Y041号)资助。


Study on hydrophobic properties of CF/EP surfaceetching by femtosecond laser
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    摘要:

    碳纤维/环氧树脂复合材料(CF/EP)在航空航天、交通运输、风电等领域中广泛应用,但由于长期工作在恶劣环境中,表面容易浸水、沾灰和结冰等。为改善CF/EP表面疏水性,先利用飞秒激光加工系统在其表面制备出乳突微结构,再采用白光干涉仪观测乳突微结构表面形貌,并结合接触角测量仪分析表面微结构的疏水性能;研究激光功率和微结构尺寸参数对乳突微结构及其疏水性的影响。研究结果表明:在扫描速度、脉冲频率一定的条件下,接触角与输入功率成正相关,当功率高于125W时,接触角与输入功率成负相关;碳纤维/环氧树脂表面微结构的接触角随乳突半径的增大而减小,最大接触角达到1397°;使用飞秒激光刻蚀CF/EP表面可以提高其表面疏水性能,并且乳突半径是影响CF/EP表面疏水性能的重要因素。

    Abstract:

    Carbon fiber/epoxy resin composites (CF/EP) have been widely used in aerospace,transportation,wind power and other fields,but due to the long term work in the harsh environment,the surface is easy to be soaked in water,ash,ice and so on.In order to improve the surface hydrophobicity of CF/EP,the mastoid microstructure is fabricated by femtosecond laser processing system,and then the surface morphology of microstructures is measured by white light interferometer and the hydrophobic properties of microstructures are analyzed by contact angle measuring instrument.The effects of laser power and microstructure dimension parameters on the microstructure and hydrophobicity of mastoid are studied.The results show that when the scanning speed and pulse frequency are constant,the contact angle is positively correlated with the input power;when the power is higher than 1.25 W,the contact angle is negatively correlated with the input power;the contact angle of the carbon fiber/epoxy resin surface microstructure decreases with the increase of the radius of the mastoid,and the maximum contact angle reaches 139.7°.Femtosecond laser etching can improve the hydrophobicity of CF/EP surface,and the radius of mastoid is an important factor affecting the hydrophobicity of CF/EP surface.

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陈苗苗,张大斌,文梦蝶,陈素.飞秒激光刻蚀CF/EP表面疏水性能研究[J].激光与红外,2022,52(6):827~832
CHEN Miao-miao, ZHANG Da-bin, WEN Meng-die, CHEN Su. Study on hydrophobic properties of CF/EP surfaceetching by femtosecond laser[J]. LASER & INFRARED,2022,52(6):827~832

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  • 最后修改日期:2021-08-12
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  • 在线发布日期: 2022-06-24