轻质油为介质的25%丙环唑新型乳油在蔬菜叶片上的润湿铺展性能  

Investigation on the Wetting and Spreading Abilities of Propiconazole 25% EC with Naphthenic Light Oil as Dispersing Medium on Vegetable Leaves

作　　者：陈丽华[1] 王强[1] 王展旭[1] 

机构地区：[1]青岛科技大学化学与分子工程学院,山东青岛266042

出　　处：《农药》2009年第7期487-488,491,共3页Agrochemicals

基　　金：中国教育部留学归国基金(20073625);青岛科技大学博士启动基金(20050022146)

摘　　要：有机硅表面活性剂Silwet408应用于改善环烷基轻质油为介质的25%丙环唑乳油在作物叶片上的润湿扩散性能。结果表明:未添加Silwet408的药液在菠菜、油菜、甘蓝、生菜和白菜叶片上的接触角为65°～92°,而添加0.05%和0.1%Silwet408的药液接触角分别降低了42°～56°和47°～60°,铺展面积则分别增加了20～33.3倍和29.1～47.6倍,表面张力从53.60mN/m分别降低到41.94、39.36mN/m,显著提高了环烷基轻质油为介质的25%丙环唑乳油在蔬菜叶片上的润湿铺展性能,而Silwet408对药液的黏度影响不大。Silwet408 was applied to improve the wetting properties ofpropiconazole 25% EC with naphthenic light oil as dispersing medium on the crops leaves. The results demonstrated that the contact angle of the liquid without Silwet408 is 65°-92° in spinach, rape, cabbage, lettuce and Chinese cabbage leaf. Whereas for the solution with 0.05 or 0.1% Silwet408, the decrement of contact angles at 42°-56° or 47°-°60° was shown. The spreading areas was increased 20-33.3 and 29.1-47.6 times, sequentially. The surface tensions of the liquid reduce from 53.60 mN/m to 41.94, 39.36 mN/m, separately. The wetting properties of propiconazole 25% EC with naphthenic light oil as dispersing medium on vegetable leaves was significantly increased. Silwet408, however, has little influence on viscosity.

关 键 词：轻质油 丙环唑 Silwet408 表面张力 

分 类 号：TQ450.2[化学工程—农药化工]