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›› 2014, Vol. 14 ›› Issue (2): 345-349.

• 材料工程专栏 • 上一篇    下一篇

梳型聚羧酸盐分散剂的合成及其在吡虫啉水悬浮剂中的应用

邢雯 周一夫 田晓斌 任天瑞   

  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 上海师范大学生命与环境科学学院化学系 上海师范大学 生命与环境科学学院
  • 收稿日期:2014-01-14 修回日期:2014-03-20 出版日期:2014-04-20 发布日期:2014-04-20
  • 通讯作者: 任天瑞

Synthesis of Comb Polymer Carboxylic Dispersant and Its Application in Imidacloprid Aqueous Suspension Concentrate

XING Wen ZHOU Yi-fu TIAN Xiao-bin REN Tian-rui   

  1. College of Life and Environment Sciences, Shanghai Normal University College of Life and Environment Sciences, Shanghai Normal University College of Life and Environment Sciences, Shanghai Normal University
  • Received:2014-01-14 Revised:2014-03-20 Online:2014-04-20 Published:2014-04-20
  • Contact: REN Tian-rui

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被引次数

12

摘要： 以马来酸酐(MA)和聚乙二醇200 (PEG200)为原料，通过酯化反应制得大分子马来酸聚乙二醇酯(MAPEG)，再与丙烯酸(AA)、甲基丙烯酸甲酯(MMA)通过自由基聚合反应制得3种梳型聚羧酸盐分散剂，研究了不同单体比例的聚合物分散剂在600 g/L吡虫啉水悬浮剂中的流点、粘度和Zeta电位. 结果表明，当单体摩尔比MAPEG:AA:MMA为1:8:2、共聚物分散剂添加量为6%(w)时，悬浮液粘度最小，为600 MPa×s，热贮前后悬浮率分别为93.7%±0.22%和92.3%±0.12%，粒径分别为3.26和3.88 mm，分散效果与市售同类产品亨斯迈2500相当.

关键词: 羧酸盐分散剂, MAPEG-AA-MMA共聚物, 吡虫啉, 水悬浮剂, 稳定性

Abstract: The macromolecular monomer, maleic acid polyethylene glycol ester (MAPEG), was prepared by maleic anhydride (MA) and polyethylene glycol (PEG) as raw materials. Three kinds of comb-style carboxylic dispersants were synthesized with MAPEG, acrylic acid (AA) and methyl methacrylate (MMA) by radical polymerization at different monomer ratios. Application of the dispersants in 600 g/L imidacloprid aqueous suspension concentrate was investigated through determination of flow point, viscosity and Zeta potential. The results showed that the optimal molar ratio of MAPEG:AA:MMA was 1:8:2. When the dosage of dispersant was 6%(w), the minimum viscosity of suspension was 600 MPa×s. The suspension rates before and after heat storage were 93.7%±0.22% and 92.3%±0.12%, and the particle size 3.26 and 3.88 mm. The effect of dispersion was equal to commercial Huntsman 2500 product.

Key words: carboxylic acid dispersant, MAPEG-AA-MMA copolymer, imidacloprid, suspension concentrate, stability

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