超浸润性金属丝网的制备及工艺优化  

Fabrication and Process Optimization of Super-wettability Metal Mesh

作　　者：陈宏霞[1,2] 马福民[3] 黄林滨 

机构地区：[1]华北电力大学能源与动力工程学院,北京102206 [2]华北电力大学多相流与传热北京市重点实验室,北京102206 [3]湖北理工学院材料与冶金学院,湖北黄石435003

出　　处：《材料工程》2017年第9期59-65,共7页Journal of Materials Engineering

基　　金：国家自然科学基金资助(51576063;51202082);中央高校基本科研业务费专项资金资助(2017YQ002)

摘　　要：为拓展三维丝网的应用,强化其微结构作用效果;通过采用直接氧化法和液相、气相沉积成功制备超浸润性Cu丝网(200PPI)。利用扫描电镜、透射电镜、X射线衍射、接触角仪及高速摄像分别对丝网的结构、形貌及浸润性进行表征,并获得膜层的最佳制备工艺。结果表明:曲面丝线上的超亲水膜层呈现为单层微米尺度的刀片花结构,液滴在此表面上的铺展速率可达3.5m/s;经液相、气相沉积方法对其氟化处理后,超亲水丝网成功改性为超疏水丝网;并证明试样在96℃氧化液中氧化15min、液相沉积30min、180℃下热处理20min可获得大于150°的超疏水性能。Super-wettability Cu mesh（200PPI）was successfully fabricated by direct oxidation,liquid deposition and vapor deposition in order to expand its application ranges and enhance microstructure effect.The structure,morphology and wettability of Cu mesh were characterized by scanning electron microscopy（SEM）,transmission electron microscopy（TEM）,X-ray diffraction,contact angle instrument and high speed video,and the optimum preparation process of film layer was obtained.The copper mesh with a layer of knife-like flower film shows super-hydrophilic wettability on which the spread velocity of water is 3.5m/s;moreover,the super-hydrophilic mesh with hybrid structures can be switched into super-hydrophobic material（〉150°）by liquid deposition and vapor deposition methods;the optimum fabrication conditions to achieve super-hydrophobic performance〉 150°are oxidation time of 15 min,oxidation temperature of 96℃,liquid deposition time of 30 min and the treat temperature of 180℃for 20 min.Meantime,hybrid gaps of knife-like flowers are considered as the main reason of the super-wettability of meshes.

关 键 词：金属丝网 超亲水性 超疏水性 刀片花 

分 类 号：TB32[一般工业技术—材料科学与工程]