关键词: 水溶高分子材料, 微乳缓释气雾杀虫剂, 卫生害虫

Abstract: To make up the shortcomings of oil-base aerosol(OBA) which used plenty of organic solvent polluted environment, burned easily, exploded easily, irritated eyes and skin and have smell of indelight; according to instable liquid of water-base aerosol(WBA), and the weakness of osmosis, micro-emulsion (ME) has been utilized which substituted organic solvent for distilled water to reduce toxicity and strengthen the effect, water-souble high polymers has been used as stabilizer and controlled release which has some viscosity made the evaportation of droplets decreased, and a membrane in the surface of spraying boundary formed, so the decomposition is slowed down by light、oxygen and so on.With the improvement of releasing function, the number of times of spraying insectides can be reduced as the prolonged effect.According to the “Efficacy test method of public health insecticides for pesticide registration (GB 13917- 92) ”, laboratory efficacy of the Controlled Release ME- Aerosol were: The KT₅₀ against Musca domestica and Culex pipiens pallons were about 1.5min and Blattella germanica 2.0 min respectively, the mortality in 24 hours of all were 100%; the rate of knock down in 1 hour at the analogous site were 96.0%-100%, the mortality in 24 hours were 100%.The detain effectiveness by residual spraying on glass、paint-board、cement against Musca domestica were 9 weeks、6weeks and 5 weeks respectively. It is obvious superior to those of no containing high polymers.The decomposed rate of active ingredients by thermal storage on (54±2)℃ for 2 weeks were all ＜3.0%; the physical stability was well by leaving with 0-40℃ for 6 months.It is a effective way to solve the problem of the stability of OBA by the utilized ME, and the advantage of environment is obvious.