粉煤灰超疏水不锈钢网的制备及油水分离  

Preparation of fly ash superhydrophobic mesh for effectiveoil-water separation

作　　者：张雪梅[1] 王航 郝彬彬 王广 牛凤兴[1] 高云艳 ZHANG Xuemei;WANG Hang;HAO Binbin;WANG Guang;NIU Fengxing;GAO Yunyan(Shaanxi Key Laboratory of Chemical Reaction Engineering,Department of Chemistry and Chemical Engineering,Yan'an University,Yan'an 716000,Shaanxi,China;Baichuan New Materials Co.,Ltd.,Yinchuan 750409,Ningxia,China;Shaanxi Jingyi Chemical Co.,Ltd.,Yulin 719000,Shaanxi,China)

机构地区：[1]延安大学化学与化工学院,陕西省化学反应工程重点实验室,陕西延安716000 [2]宁夏百川新材料有限公司,宁夏银川750409 [3]陕西精益化工有限公司,陕西榆林719000

出　　处：《精细化工》2020年第6期1153-1157,共5页Fine Chemicals

基　　金：陕西省教育厅重点实验室项目(17JS141);陕西省大学生创新创业训练计划项目(S201910719048)。

摘　　要：采用树脂粘接法,将硬脂酸修饰后的粉煤灰用环氧树脂粘接在不锈钢网骨架表面,制备了超疏水不锈钢网,并对其进行了TEM、SEM、FTIR和接触角等表征。结果显示,在高倍显微镜下改性后的超疏水不锈钢网表面呈一定粗糙度的微纳米分级结构,静态水接触角高达153°。此外,该超疏水不锈钢网具有良好的机械稳定性和超疏水耐久性,其表面经机械磨损100次后水静态接触角仍高达141°。该材料用于多种油/有机溶剂与水混合液的分离中,分离效率均高于94%。Superhydrophobic stainless steel mesh was prepared by using epoxy resin to bondthe stearic acid modified fly ash on the surface of stainless steel mesh skeleton.The as-prepared mesh was characterized by TEM,SEM,FTIR,and contact angle measurement.The results showed the surface of the modified super hydrophobic stainless steel mesh under high power microscope exhibited a micro-nanohierarchical structure with a certain roughness,and the water contact angle of the mess was up to 153°.In addition,the as-prepared stainless steel mesh had good mechanical stability and superhydrophobic durability.The water contact angle of the surface was still as high as 141°after 100 mechanical abrasion tests.The material was used in the separation of various oil/organic solvents and water mixtures,and the separation efficiency was all higher than 94%.

关 键 词：超疏水 粉煤灰 不锈钢网 环氧树脂 油水分离 功能材料 

分 类 号：X703[环境科学与工程—环境工程] TQ424[化学工程]