不同刻蚀条件对铜基表面微结构的表面润湿性能影响  

Effect of Different Etching Conditions on Surface Wetting Properties of Copper-Based Surface Microstructure

作　　者：蓝宁 黄书烽 黄伟莉[1] 赵海沣 Lan Ning;Huang Shufeng;Huang Weili;Zhao Haifeng(School of Mechanical and Electronic Engineering,East China University of Technology,Nanchang 330013,China)

机构地区：[1]东华理工大学机械与电子工程学院,南昌330013

出　　处：《机电工程技术》2024年第5期146-149,217,共5页Mechanical & Electrical Engineering Technology

基　　金：江西省教育厅科技项目(GJJ200739);东华理工大学江西省新能源工艺及装备工程技术研究中心开放基金资助项目(JXNE2020-04,JXNE2021-07);东华理工大学教学改革研究课题(DHJG-21-63);核技术应用教育部工程研究中心(HJSJYB2021-2);江西省博士后科研项目(2021KY50)。

摘　　要：采用60°螺纹车刀对铜棒的端面进行车削加工以获得规则可控均匀的表面微观结构,并结合化学刻蚀和高温氧化构建纳米薄膜以及正十八烷基硫醇修饰的方法来制备铜基超疏水表面。研究刻蚀时间以及刻蚀温度对铜基表面微结构的表面润湿性能的影响。经扫描式电子显微镜(SEM)观察车削加工后表面微观结构和光学接触角测量仪测量铜基超疏水表面的静态表观接触角,结果表明,铜基表面能形成沟壑状并且呈螺旋形均匀分布的亚微米或纳米级别的粗糙结构,铜基超疏水表面静态表观接触角大小随刻蚀时间和刻蚀温度的增加而增大,纳米薄膜覆盖范围随刻蚀时间和刻蚀温度的增加而增大。铜基超疏水表面在化学刻蚀温度为75℃和刻蚀时间为60 min时获得最佳的超疏水性能,最佳静态表观接触角为165°。该超疏水表面制备方法的成本较低,效果相对较好,对超疏水表面的实际生产有一定的促进作用。A 60°thread turning tool is used to turn the end face of the copper rod to obtain a regular,controllable and uniform surface microstructure.Turning processing combined with chemical etching and high-temperature oxidation are used to construct nanofilms and 1-Octadecanethiol modification methods to prepare copper-based superhydrophobic surfaces.The effects of etching time and etching temperature on the surface wetting properties of the copper-based surface microstructure are studied.The surface microstructure after turning is observed with a scanning electron microscope(SEM)and the static apparent contact angle of the copper-based superhydrophobic surface is measured with an optical contact angle measuring instrument.The results show that the copper-based surface can form ravines and are evenly distributed in a spiral shape.The submicron or nanoscale rough structure,the static contact angle size of the copper-based superhydrophobic surface and the coverage of the nanofilm increase with the increase of oxidation time and oxidation temperature.The copper-based superhydrophobic surface obtains the best superhydrophobic performance when the chemical etching temperature is 75°C and the oxidation time is 60 minutes,and the best static apparent contact angle is 165°.The cost of this superhydrophobic surface preparation method is low,the effect is relatively good,and it has a certain promotion effect on the actual production of superhydrophobic surfaces.

关 键 词：铜金属 化学刻蚀 超疏水表面 车削加工 正十八烷基硫醇 

分 类 号：TB34[一般工业技术—材料科学与工程]