超高分子量聚乙烯表面织构化疏水性研究  

Study on hydrophobicity of surface texture of PE⁃UHMW

作　　者：宋龙 钟雯[1] SONG Long;ZHONG Wen(School of Mechanical Engineering,Xihua University,Chengdu 610039,China)

机构地区：[1]西华大学机械工程学院,成都610039

出　　处：《中国塑料》2024年第9期30-35,共6页China Plastics

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400μm、横向间距为100μm、纵向间距为100μm;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。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 microstruc-ture 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-modi-fied surface had the best hydrophobicity.Based on this rule,the optimal processing parameters of the microstructural hy-drophobicity could be achieved by an optimized combination of processing parameters for the hydrophobicity of the hog-weed bionic microstructure.This combination was determined to be a fabric size of 400μm,a transverse spacing of 100μm,and a vertical spacing of 100μm.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%.

关 键 词：表面织构 疏水性 防粘连 自清洁 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]