农药微乳剂浊点的研究  

Studies on the cloud point of pesticide microemulsions

作　　者：张春华[1] 王忠伟[1] 黄啟良[2] 张宗俭[3] 李凤敏[2] 折东梅[2] 卜小莉[2] 

机构地区：[1]沈阳农业大学,辽宁沈阳110161 [2]中国农业科学院植物保护研究所农业部农药化学与应用技术重点开放实验室,北京100094 [3]中化化工科学技术研究总院,北京100011

出　　处：《农药》2006年第3期176-177,198,共3页Agrochemicals

基　　金：国家自然科学基金资助项目(批准号:30370945)

摘　　要：以高效氯氰菊酯微乳剂为例,对由几种不同表面活性剂所形成的微乳剂浊点进行测定,并测了不同助表面活性剂含量时的浊点。分析讨论了影响微乳剂浊点的主要因素及其影响规律。结果表明,表面活性剂的EO加成数增加,微乳剂浊点随之升高;助表面活性剂种类及用量对浊点的影响都很大,其中乙醇、DMF对浊点都有明显的升高作用,而正丁醇可明显降低浊点,乙腈随含量的增加对浊点的影响先升高后降低。Using beta-cypermethrin as the test example, cloud points were determined for microemulsions formed using several different surfactants and different concentrations of cosuffactants. The main factors affecting microemulsion cloud points were analyzed along with the principles governing their effects. Cloud point increased as surfactant EO number increased. Cosurfactant type and concentration greatly affected cloud point, with ethanol and DMF causing significant cloud point increases, n-butanol causing a significant decrease, and acetonitrile causing a cloud point increase at low concentrations and a decrease at high concentrations.

关 键 词：农药微乳剂 浊点 E0加成数 助表面活性剂 

分 类 号：TQ450.6[化学工程—农药化工]