二维剥片对蒙脱石漆雾凝聚剂的影响  

Effect of Two-Dimensional Exfoliation on Montmorillonite Paint Mist Condensate

作　　者：周亚坤 赵云良[1,2] 高仁波 陈立才 张婷婷 ZHOU Yakun;ZHAO Yunliang;GAO Renbo;CHEN Licai;ZHANG Tingting(School of Resources and Environmental Engineering,Wuhan University of Technology,Wuhan 430070,China;Wuhan Clayene Technology Co.,Ltd.,Wuhan 430223,China;School of Chemical and Environmental Engineering,Wuhan University of Light Industry,Wuhan 430023,China)

机构地区：[1]武汉理工大学资源与环境工程学院,武汉430070 [2]武汉科莱烯科技有限公司,武汉430223 [3]武汉轻工大学化学与环境工程学院,武汉430023

出　　处：《硅酸盐通报》2023年第7期2541-2550,共10页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金面上项目(51874220);国家自然科学基金青年自然科学基金(51904215)。

摘　　要：水性漆在涂料市场的份额逐年快速攀升,但采用传统漆雾凝聚剂处理水性漆废水存在水性漆去除率不高、二次污染等问题。本文开发了二维剥片型蒙脱石漆雾凝聚剂,显著提升了蒙脱石漆雾凝聚剂的分散稳定性和对水性漆废水中水性漆的去除率,并用原子力显微镜(AFM)、扫描电子显微镜-X射线能谱(SEM-EDS)分析、Zeta电位分析仪、傅里叶变换红外光谱仪(FTIR)、紫外分光光度计探究了二维剥片对蒙脱石漆雾凝聚剂的影响及蒙脱石漆雾凝聚剂的作用机理。结果表明:蒙脱石漆雾凝聚剂处理水性漆废水的机理主要是蒙脱石中的羟基和Si—O中的O与水性漆的羧基之间形成了氢键,使水性漆被吸附在蒙脱石表面;剥离程度较高的蒙脱石电负性更强,能保持更好的分散稳定性;剥离程度的增加使蒙脱石漆雾凝聚剂的分散稳定性和对水性漆的去除率显著提升,当二维剥片型蒙脱石用量为水性漆废水的1.125%(体积分数)、阳离子型聚丙烯酰胺用量为水性漆废水的1.000%(体积分数)时,水性漆去除率可达98.770%;与市售蒙脱石漆雾凝聚剂相比,本产品处理水性漆废水后水性漆去除率更高。The share of water-based paint in the paint market is rising rapidly year by year,but there are some problems such as the low removal rate of water-based paint and secondary pollution in the treatment of water-based paint wastewater by traditional paint mist condensate.In this paper,a two-dimensional exfoliated montmorillonite paint mist condensate was developed,which significantly improved dispersion stability and removal rate of water-based paint in water-based paint wastewater of montmorillonite paint mist condensate.Atomic force microscope(AFM),scanning electron microscope-X-ray energy spectrum(SEM-EDS)analysis,Zeta potential analyzer,Fourier transform infrared spectrometer(FTIR)and ultraviolet spectrophotometer were used to explore the influence of two-dimensional exfoliation on the montmorillonite paint mist condensate and its mechanism.The results show that the mechanism of treating water-based paint wastewater by montmorillonite paint mist condensate is mainly that hydrogen bonds are formed between hydroxyl groups in montmorillonite,O in Si—O and carboxyl groups of water-based paint,so that water-based paint is adsorbed on the surface of montmorillonite.Montmorillonite with higher peeling degree has stronger electronegativity and can maintain better dispersion stability.With the increase of peeling degree,the dispersion stability and removal rate of water-based paint of montmorillonite paint mist condensate are significantly improved.When the dosage of two-dimensional exfoliated montmorillonite is 1.125%(volume fraction)of water-based paint wastewater and the dosage of cationic polyacrylamide is 1.000%(volume fraction)of water-based paint wastewater,the removal rate of water-based paint reaches 98.770%.Compared with the commercially available montmorillonite paint mist condensate,this product has higher removal rate of water-based paint after treating water-based paint wastewater.

关 键 词：蒙脱石 二维剥片 水性漆废水 漆雾凝聚剂 水性漆去除率 消黏剂 

分 类 号：TD98[矿业工程—选矿]