超疏水-高疏油SiC膜的制备及性能
Preparation and properties of superhydrophobic-highly oleophobic SiC membrane
李莉 1蔡鑫宇 1陈寅杰 1张文启 1李光辉 2饶品华1
作者信息
- 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
- 折叠
摘要
基于SiO2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SiO2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.
Abstract
A process was developed to prepare a superhydrophobic-highly oleophobic surface on SiC membrane based on SiO2 particle blending spraying and immersion method.By spraying SiO2 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Key words
SiC membrane/spraying/superhydrophobic-highly oleophobic/surface modification/self-cleaning引用本文复制引用
基金项目
上海市地方院校能力建设计划(21010501400)
上海市浦江人才计划(20PJ1404600)
出版年
2024
国家科技期刊平台
NSTL
万方数据