超疏水-高疏油SiC膜的制备及性能  

Preparation and properties of superhydrophobic-highly oleophobic SiC membrane

作　　者：李莉 蔡鑫宇 陈寅杰 张文启[1] 李光辉[2] 饶品华[1] LI li;CAI Xinyu;CHEN Yinjie;ZHANG Wenqi;LI Guanghui;RAO Pinhua(School of Chemistry and Chemical Engineering,Shanghai University of Engineering Science,Shanghai 201620,China;Innovation Center for Environment and Resources,Shanghai University of Engineering Science,Shanghai 201620,China)

机构地区：[1]上海工程技术大学化学化工学院,上海201620 [2]上海工程技术大学环境与资源创新中心,上海201620

出　　处：《化工进展》2024年第8期4516-4522,共7页Chemical Industry and Engineering Progress

基　　金：上海市地方院校能力建设项目(21010501400);上海市浦江人才计划(20PJ1404600)。

摘　　要：基于SiO_(2)粒子共混喷涂与浸渍方法,研发了一种在SiC膜上制备超疏水-高疏油表面的工艺。通过喷涂不同粒径的SiO_(2)颗粒,在SiC膜表面构造具有双疏性能的微纳双重粗糙结构,然后通过浸渍将十七氟癸基三甲氧基硅烷接枝至SiC膜表面,成功制备了具有超疏水-高疏油特性和优异自清洁性能的SiC膜。通过改变含氟量、粗糙度,分析了各参数对表面润湿性的影响。经改性后所得超疏水-高疏油SiC膜表面上水和正十六烷的静态接触角分别为152.6°和146.3°,滚动角分别为5.2°和10.2°,这归因于SiC膜表面的微纳结构和低表面能物质降低了其与其他物质的黏附力。在强酸和强碱溶液中,超疏水-高疏油SiC膜表现出稳定的双疏性。本研究为在无机膜上构建具有优异耐酸碱性的超疏水-高疏油表面提供了一种简便的工艺。A process was developed to prepare a superhydrophobic-highly oleophobic surface on SiC membrane based on SiO_(2) particle blending spraying and immersion method.By spraying SiO_(2) particles of different sizes,a micro-nano dual rough structure with amphiphobic capability was created on the surface of the SiC membrane.Then,perfluorodecyltrimethoxysilane was grafted onto the SiC membrane surface through immersion,successfully achieving a SiC membrane with superhydrophobic-highly oleophobic characteristics and excellent self-cleaning performance.The effects of different parameters,such as fluorine content and surface roughness,on surface wettability were analyzed.The modified superhydrophobic-highly oleophobic SiC membrane exhibited the static water contact angle of 152.6°and the static contact angle of n-hexadecane of 146.3°.The sliding angles were measured to be 5.2°and 10.2°,respectively.These properties could be attributed to the micro-nano structure on the SiC membrane surface and the low surface energy material,which reduced the adhesion between the surface and other substances.The superhydrophobic-highly oleophobic SiC membrane also exhibited stable amphiphobicity in strong acid and alkali solutions.This research provided a simple process for constructing superhydrophobic-highly oleophobic surfaces with excellent acid-base resistance on inorganic membranes.

关 键 词：SiC膜 喷涂 超疏水-高疏油 表面修饰 自清洁 

分 类 号：O69[理学—化学]