Preparation Of Emamectin Benzoate Emulsion In Water And Its Forming Mechanism Of Physical Stable System

EW (Emulsion, Oil in Water) of Agrochemical's formulation, which is also called as CE(concentrated emulsion), is a new pesticide formulation by using water as dispersing medium,and by the action of dispersant, or emulsifier or other additive agent to make the technical agrochemicals (solid or oil-liquid) suspended or dispersed in water.Applying of high-cutting for emulsion in the prescription filtration of emamectin benzoate 1% EW, the effect of different substances on the EW systematic stability were investigated from the macroscopical angle. The substances included emulsifier,co-emulsifier and thicker. The trial finally confirmed the excellent prescription of triazophos 1% EW. The main conclusion obtained were listed as follows. Emamectin benzoate :1%; xylene and toluene content of 9%; zds-3 1%;EL-20 4.2%; ZDS-1 1.8%; twelve Triacontanol 1%; ZDS-2 0.05%; Glycol 1%.This paper studies the relationship between the different factors and system stability water emulsion ,and explore the internal mechanism of the stability .Come to the conclusion: the choice of emulsifier is the key to the development of water-emulsion; emulsifier and co-emulsifying agent can reduce the interfacial tension, so that forming protective film between oil-water layer; thicker can increase the viscosity to prevent coalescence between the latex particle and enhance emulsion stability; At the research and development of EW, enough energy input is necessary; Median diameter in water research and development, is a very good reference target, The speed of filtration would be accelerated when the application of Median diameter.In the end of the paper, the analysis method of HPLC for the content of emamectin benzoate in the formulation was developed ,which could offer technical reference for the quality control in the industry production..