中国塑料 ›› 2024, Vol. 38 ›› Issue (9): 30-35.DOI: 10.19491/j.issn.1001-9278.2024.09.006

• 材料与性能 • 上一篇    下一篇

超高分子量聚乙烯表面织构化疏水性研究

宋龙(), 钟雯()   

  1. 西华大学机械工程学院,成都 610039
  • 收稿日期:2024-01-06 出版日期:2024-09-26 发布日期:2024-09-27
  • 通讯作者: 钟雯,女,博士、副教授、硕士生导师,专长于机械服役可靠性研究,zw1019@126.com
    E-mail:Longs163@126.com;zw1019@126.com
  • 作者简介:宋龙(2000-),男(汉族),在读硕士,从事材料表面改性研究,Longs163@126.com

Study on hydrophobicity of surface texture of PE⁃UHMW

SONG Long(), ZHONG Wen()   

  1. School of Mechanical Engineering,Xihua University,Chengdu 610039,China
  • Received:2024-01-06 Online:2024-09-26 Published:2024-09-27
  • Contact: ZHONG Wen E-mail:Longs163@126.com;zw1019@126.com

摘要:

针对超高分子量聚乙烯表面与黏稠物易发生粘连、不便于清洁等问题,通过激光标刻机对材料表面进行织构化改性,利用接触角测试仪对材料表面疏水性进行表征。结果表明,改性后能使材料表面的疏水性提高50 %,使其具有防粘连性能和自清洁能力。探究了运用哪种织构对材料表面进行织构化改性使材料表面具有最佳的疏水性,其结果为仿生猪笼草织构改性表面的疏水性最好。在此结论上探究该织构疏水性最优的加工参数,结果表明,猪笼草仿生织构疏水性最好的加工参数组合为织构大小为400 μm、横向间距为100 μm、纵向间距为100 μm;通过改变织构大小来改变织构的面积率,结果表明,织构的疏水性随着织构面积率的增大而先增大后减小,在织构面积率为18.5 %附近取得最大。

关键词: 表面织构, 疏水性, 防粘连, 自清洁

Abstract:

Aiming at the problems in the high surface adhesion of ultrahigh⁃molecular⁃weight polyethylene (PE⁃UHMW) with viscous materials as well as its poor cleaning performance, the surface of PE⁃UHMW was modified with microstructure by using a laser marking machine, and then its hydrophobicity was characterized by using a contact angle tester. The results indicated that the surface modification increased the hydrophobicity of PE⁃UHMW by 50 %, resulting in its anti⁃adhesion performance with a self⁃cleaning ability. The hydrophobicity of PE⁃UHMW was investigated through forming different types of microstructures on the modified surface, and the results showed that the bionic hogweed texture⁃modified surface had the best hydrophobicity. Based on this rule, the optimal processing parameters of the microstructural hydrophobicity could be achieved by an optimized combination of processing parameters for the hydrophobicity of the hogweed bionic microstructure. This combination was determined to be a fabric size of 400 μm, a transverse spacing of 100 μm, and a vertical spacing of 100 μm. Through varying the size of the texture, a relationship between the hydrophobicity of the texture and area ratio could be derived. The hydrophobicity increased and then decreased with an increase in the texture area ratio, and the maximum was achieved at a weaving area ratio of approximately 18.5 %.

Key words: surface texture, hydrophobicity, anti?adhesion, self?cleaning

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