聚醚胺改性聚苯乙烯马来酸酐超分散剂的制备及其在分散TiO_(2)中的应用  

Preparation of Polyetheramine Modified Styrene-maleic Anhydride Hyperdispersant and Its Application in TiO_(2) Dispersion

作　　者：孙霞 薛韬 余彩莉[2] 张发爱[1] Sun Xia;Xue Tao;Yu Caili;Zhang Faai(School of Materials Science and Engineering,Guilin University of Technology,Guilin,Guangxi 541000,China;School of Chemical and Biological Engineering,Guilin University of Technology,Guilin,Guangxi 541000,China)

机构地区：[1]桂林理工大学材料科学与工程学院,广西桂林541000 [2]桂林理工大学化学与生物工程学院,广西桂林541000

出　　处：《涂料工业》2024年第5期39-44,共6页Paint & Coatings Industry

摘　　要：为解决传统分散剂在颜料分散体系中容易发生絮凝的问题,提出了一种简便的制备超分散剂的方法。将不同相对分子质量的聚醚胺通过亚胺法接枝到苯乙烯-马来酸酐共聚物(SMA)侧链上,制备了亚胺化苯乙烯马来酸酐(SMI)超分散剂,研究了其对TiO2颜料的分散性能。利用红外光谱仪、核磁共振氢谱仪、凝胶渗透色谱仪、热重分析仪和差示扫描量热仪对分散剂进行了表征;通过测量TiO2在甲苯中的粒径和分散稳定性确定SMI的分散性能。结果表明:成功制备了SMI分散剂,当使用聚醚胺D-2000改性SMA时,制得的SMI分散剂对TiO2悬浮液体系有良好的分散效果(48 h内基本无颗粒沉降),能够有效防止颜料颗粒聚集。To solve the flocculation problem of traditional dispersants in pigment dispersion system,a simple method of preparing super-dispersant was proposed.Different relative molecular weights of polyether amines were grafted onto the side chains of styrene-maleic anhydride copolymer(SMA)via imine method to prepare iminated styrene maleic anhydride(SMI)super dispersant,and its dispersion performance on TiO_(2)pigment was studied.Infrared spectroscopy,nuclear magnetic resonance hydrogen spectroscopy,gel permeation chromatography,thermogravimetric analysis,and differential scanning calorimetry were used to characterize the dispersants,and the dispersive properties of SMI were evaluated by measuring the particle size and dispersion stability of TiO_(2)in toluene solvent.The results showed that the SMI dispersant was successfully prepared,and when using polyetheramine D-2000 to modify SMA,the prepared SMI dispersant had a good dispersion effect on the TiO_(2)suspension system(with almost no particle settling within 48 h),effectively preventing pigment particle aggregation.

关 键 词：聚醚胺 苯乙烯-马来酸酐 超分散剂 TiO_(2) 

分 类 号：TQ630.495[化学工程—精细化工]