第 41 卷第 5 期Vol. 41 No. 5
2011 年 10 月Oct 2011

所属栏目:农药及中间体

500 g/L噻虫嗪悬浮种衣剂配方研究
曹 慧1,2,3,李 涛2,3,廖晓兰1,聂思桥2,3,陈九星2,3,梁 骥2,3,刘昱霖2,3,廖力华2,3,4 (1. 湖南农业大学 生物安全科学技术学院,湖南 长沙410014;2. 湖南化工研究院 国家农药创制工程技术研究中心;3. 农用化学品湖南省重点实验室,湖南 长沙 410014;4. 长沙理工大学,湖南 长沙410014)
摘 要:采用湿式超微粉碎加工工艺,以悬浮率、热贮稳定性、包衣均匀度和脱落率为标准,用流点法筛选合适的梳形高分子分散剂和类双子型分散剂,通过对不同润湿分散剂、成膜剂以及增稠稳定剂和防冻剂的筛选,得到了500 g/L噻虫嗪悬浮种衣剂的优化制剂配方为40%噻虫嗪,4%YUS-SC3,2%YUS-WG5,1%YUS-WG4,2%尿素,0.1%黄原胶,0.5%硅酸镁铝,0.1%消泡剂,水余量。经实验,其成膜性良好,脱落率<4%。包衣后的玉米种子,其发芽率97%,种衣剂对种子发芽率的影响<1%。
关键词:噻虫嗪,高分子分散剂,悬浮种衣剂,成膜剂,稳定性
中图分类号:S482.99  文献标识码:B  文章编号:1009-9212(2011)05-0017-04
Research on the Formulation of Thiamethoxam 500 g/L Flowable Concentrate for Seed Coating
CAO Hui,LI Tao,LIAO Xiao-lan,NIE Si-qiao,CHEN Jiu-xing,LIANG Ji,LIU Yu-lin,LIAO Li-hua (1. Hunan Agricultural University Biological Safety Institute of science and technology,Changsha 410014,China;2. National Engineering Research Center for Agrochemicals,Hunan Research Institute of Chemical Industry,Changsha 410014,China;3. Hunan Province Key Laboratory for Agrochemicals,Changsha 410014,China;4. Institutes of Technology of Changsha,Changsha 410014,China)
Abstract:The formulation of thiamethoxam 500 g/L flowable concentrate for seed coating was developed by wet milling method targeting on the suspension rate(≥90%),heat storage stability,coating equable extent and expulsion rate. The adjuvants in the formulation including wetting-dispersing agents,anti-freezing agents,thickening agents and membrane agents were screened and an optimized formulation was obtained consisting 40% of the thiamethoxam,7% of the dispersing agent,0.6% of the thickening agent,2% of the antifreezing agent and 0.1% of the defoaming agent. This formulation showed excellent film forming ability and low coating failure(<4%). The germination rate of the treated corn seeds was 97%.
Key words:thiamethoxam;polymer surfactant;the flowable concentrate for seed coating;membrane agent;stability
作者简介:曹 慧(1984-),女,湖南益阳人,硕士研究生,主要从事农药剂型加工原理研究。
联 系 人:李 涛,工程师,硕士,研究方向:农药制剂研究。(E-mail:dazuili2003@126.com)
收稿日期:2011-10-17