水下超疏油材料的制备及其在油水分离中的应用OA
Preparation of underwater superoleophobic materials and their application in oil-water separation
通过多巴胺自聚合反应、硅烷Stober反应和聚乙烯醇交联反应对不锈钢网基底表面进行修饰改性,制备水下超疏油材料微纳米聚多巴胺-交联聚乙烯醇改性钢网,采用SEM和能谱仪进行材料表面形貌表征和元素分析,对材料的浸润性、耐久性和油水分离性能进行评估.实验结果表明:微纳米聚多巴胺-交联聚乙烯醇改性钢网在空气中与水的接触角为0°,水下与油的接触角大于150°,具有超亲水/水下超疏油的润湿特性;目数在300目以下的改性不锈钢网表现出优异的水通性能和油水分离效能,油水分离率在97%以上;水下超疏油材料在原油污水中具有良好的温度耐受性和耐久性,在工业含油污水的油水分离中具有较好的应用前景.
The surface of stainless steel mesh substrate was modified by dopamine self-polymerization,Stober reaction of silane,and cross-linking polyvinyl alcohol,so as to prepare the micro-nano polydopamine-crosslinking polyvinyl alcohol modified steel mesh with underwater superoleophobic materials.The surface morphology characterization and element analysis of the materials were carried out using SEM and energy spectrometer.The infiltration,durability,and oil-water separation performance of the material were evaluated.According to the experiment result,the micro-nano polydopamine-crosslinking polyvinyl alcohol modified steel mesh has a contact angle of 0°,with a contact angle of over 150° with oil underwater,exhibiting a special wettability of superhydrophilicity and superoleophobicity underwater.Modified stainless steel mesh with a mesh size below 300 has good water flux and oil-water separation efficiency,with an oil-water separation efficiency of over 97%.Underwater superoleophobic materials have good temperature tolerance and durability in crude oil wastewater,showing a high application prospect in oil-water separation of industrial oily wastewater.
徐伟;伊卓;杨金彪;许春梅;张增丽;顾钊
中石化(北京)化工研究院有限公司,北京 100013中石化(北京)化工研究院有限公司,北京 100013中石化(北京)化工研究院有限公司,北京 100013中石化(北京)化工研究院有限公司,北京 100013中石化(北京)化工研究院有限公司,北京 100013中石化(北京)化工研究院有限公司,北京 100013
资源环境
水下超疏油超浸润油水分离
underwater superoleophobicsuper infiltrationoil-water separation
《化工环保》 2026 (1)
52-56,5
中国石油化工股份有限公司项目(321007).
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