PDMS超疏水表面的制备及集雾应用  

Preparation and Fogging Application of PDMS Superhydrophobic Surface

作　　者：张笑迎 王晗[1] ZHANG Xiao-ying;WANG Han(School of Electromechanical and Information Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China)

机构地区：[1]中国矿业大学(北京)机电与信息工程学院,北京100083

出　　处：《化工管理》2021年第6期9-11,共3页Chemical Engineering Management

基　　金：国家自然科学基金资助项目(50772131);教育部重点项目(106086);中央高校基本科研业务费专项资助项目(2010YJ05)。

摘　　要：采用一种简单的方法制备超疏水表面,在聚二甲基硅氧烷(PDMS)的制备浇注过程中添加石墨烯,并以不同目数的砂纸为模板,使得样品表面完美复制砂纸形貌。从而产生许多尺寸不同的“凹槽”用以增加样品表面粗糙度,扫描电镜结果表明石墨烯和砂纸组成的褶皱和凹槽在样品表面构筑了微米纳米复合结构。通过接触角测定仪发现,随着砂纸目数的增加,材料表面接触角先增加后减小,其中以3000目砂纸为模板制备的PDMS表面结构更为复杂,接触角达到152为超疏水表面,通过集雾试验表明,超疏水表面可以收集更多的雾滴。Using a simple method of preparation of superhydrophobic surface,graphene is added in the preparation of PDMS casting process and the metallographic sandpaper with different mesh as the template,there are a lot of different particle size of silicon carbide particles,sample surface can replicate perfectlysandpaper surface.Thus,many“grooves”with different sizes are produced to increase the surface roughness of the sample.Scanning electron microscopy(SEM)results show that the folds and grooves formed by graphene and sandpaper construct the microns nano composite structureon the surface of the sample.By contact angle meter,we find that with the increase of sandpaper mesh,material surface contact angle decreases after increasing first.Among them,the surface structure of PDMS prepared with 3000 mesh sandpaper as template is more complex and the contact angle reaches 152 as the superhydrophobic surface.The fog collection test shows that the superhydrophobicsurface can collect more fog drops due to its larger contact angle and smaller contact area between fog drops and the surface.

关 键 词：超疏水 接触角 砂纸 粗糙度 集雾 

分 类 号：TB34[一般工业技术—材料科学与工程]