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.
    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.
    shu
    GUO Yong-fei, YIN Ming-ming, 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.
    Citation: GUO Yong-fei, YIN Ming-ming, 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.
    shu

    乳化剂对4.5%高效氯氰菊酯水乳剂 物理稳定性的影响

    The effect of emulsifier on the physical stability of beta-cypermethrin 45EW

      摘要
    • 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。

       

      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,particle size became small,particle distribution became narrow,and stability improved with the increase of emulsifier content.Particle size can be used as an important parameter in the selection of optimum emulsifier content.The anti-coalescence of emulsion stabilized existed correlation with the structure of emulsifier,it would be improved with the length of the saturated carbon chain of lipophilic group.

       

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