PREPARATION METHOD OF MICROCAPSULE INSECTICIDES

摘要

PURPOSE: A preparation method of microcapsule insecticides is provided, thereby continuously and controlled releasing insecticides, so that the efficacy of insecticides can be continuously expressed with a small amount of insecticides. CONSTITUTION: The preparation method of microcapsule insecticides comprises the steps of: dissolving 0.1 to 1.0 parts by weight of biodegradable polymer in 10 to 20 parts by weight of solvent; adding 0.001 to 0.01 parts by weight of pesticidal substance into the polymer dissolved solution; saturating the pesticidal substance contained mixture in 20 to 30 parts by weight of solution containing 0.5 to 5 parts by weight of stabilizing agent; emulsifying the saturated solution; and adding 43.99 to 69.399 parts by weight of water into the emulsified saturated solution to diffuse the solvent into the water phase and removing solvent, wherein the biodegradable polymer is selected from polycaprolactone, polylactic acid and polyglycolide; solvent is selected from propylene carbonate, methylacetate, and methylene chloride; the insecticidal substance is selected from permethrin, deltamethrin, and cypermethrin; and the stabilizing agent is selected from polyoxyethylene sorbitan monolaurate, pluronic F-68, sodium lauryl sulfate, odium dodecyl diphenyloxide disulfonate, and polyvinyl alcohol.