聚羧酸盐和聚萘磺酸盐分散剂在高浓度水悬浮剂中的应用  

Application of Polycarboxylate and Naphthalenesulfonate Dispersants in High Concentration Suspension Concentrate

作　　者：郭振豪 桂奇峰 张博[1] 任帅臻 张树鹏[1] 李新忠[1] 任天瑞[1] 

机构地区：[1]上海师范大学生命与环境科学学院教育部资源化学重点实验室,上海200234

出　　处：《高等学校化学学报》2017年第7期1278-1285,共8页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:21642003)资助~~

摘　　要：研究了聚羧酸盐分散剂(SD-819)和聚萘磺酸盐分散剂(SD-661)在水溶液中的表面性能;同时考察了分散剂添加量对500 g/L扑草净水悬浮剂(SC)中的吸附、Zeta电势和流变性能等的影响.结果表明,与分散剂SD-661相比,分散剂SD-819水溶液中的表面张力(γcmc)小,临界胶束浓度(cmc)和胶束生成自由能(ΔGmic)低,吸附量大,制备出的扑草净SC黏度低,流动性好,触变性优良.结果表明,聚羧酸盐分散剂更适用于高浓度扑草净SC的制备.We studied the surface properties of polycarboxylate dispersant （SD-819） and polynaphthalene sulfonate dispersant（ SD-661 ） in aqueous solution. We also investigated the effects of the addition of dispersant on the adsorption, zeta potential, and theological properties of the 500 g/L suspension concentrate （SC） of prometryn. The results show that dispersant SD-819 have smaller surface tension（γcmc ）, lower critical micelle concentration（ cmc）, micelle formation free energy（△Gmic ） and bigger adsorption quantity in aqueous solution compared with the dispersing agent SD-661. Besides, prometryn SC prepared by SD-819 have low viscosity, good fluidity and excellent thixotropic. In conclusion, comparing two dispersants indicated that polycarboxylate dispersant is more suitable for the preparation of prometryn SC.

关 键 词：分散剂 水悬浮剂 表面性能 流变性能 聚羧酸盐 聚萘磺酸盐 扑草净 

分 类 号：O632[理学—高分子化学] O648[理学—化学]