| 乳化剂对4.5%高效氯氰菊酯水乳剂 物理稳定性的影响 |
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| 引用本文： | 郭勇飞,尹明明,陈福良.乳化剂对4.5%高效氯氰菊酯水乳剂 物理稳定性的影响[J].农药学学报,2011,13(1):71-78. |
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| 作者姓名： | 郭勇飞 尹明明 陈福良 |
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| 作者单位： | 1.农业部农药化学与应用技术重点开放实验室/中国农业科学院 植物保护研究所,北京 100193 |
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| 基金项目： | 中央级公益性科研院所基本科研业务费专项资金(2009YW08); “十一五”国家科技支撑计划(2006BAD08A03) |
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| 摘 要： | 以4.5%高效氯氰菊酯水乳剂为研究对象,探讨了乳化剂的种类、用量、亲水亲油平衡值(HLB值)和结构对水乳剂物理稳定性的影响。结果表明:当乳化剂种类选定后,在一定用量范围内,水乳剂的粒径随着乳化剂用量的增加而变小,粒径分布范围变窄,稳定性增强,粒径大小可作为筛选乳化剂最佳用量的指标;乳化剂的HLB值与水乳剂的粒径及粒径分布范围关系密切;乳化剂的结构和水乳剂的乳液抗聚并性存在相关性,适当增加亲油性的饱和碳链长度,有助于提高水乳剂的乳液抗聚并性,进而获得稳定的水乳剂配方。
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| 关 键 词： | 水乳剂 亲水亲油平衡值 乳化剂 粒径 物理稳定性 |
| 收稿时间： | 2010/4/27 0:00:00 |
| 修稿时间： | 2010/6/21 0:00:00 |
The effect of emulsifier on the physical stability of beta-cypermethrin 45EW |
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| GUO Yong-fei,YIN Ming-ming and CHEN Fu-liang.The effect of emulsifier on the physical stability of beta-cypermethrin 45EW[J].Chinese Journal of Pesticide Science,2011,13(1):71-78. |
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| Authors: | GUO Yong-fei YIN Ming-ming and CHEN Fu-liang |
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| Institution: | 1.Key Laboratory of Pesticide Chemistry & Application Technology,Ministry of Agriculture, PRC,Institute of Plant Protection,CAAS,Beijing 100193,China |
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| Abstract: | The effect of emulsifier on the stability of beta-cypermethrin 45EW,such as emulsifier kinds and content,the HLB value and structure of emulsifier was studied.The results showed that qualified,stable emulsion in water could be prepared emulsifier selected in a certain range.There was a close relationship between HLB value and particle size and distribution.Particle size and distribution will be changed as the HLB value of emulsifier changed,HLB adjustment can affect the stability of EW.In certain extent,par... |
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| Keywords: | emulsion in water HLB emulsifier particle size physical stability |
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