助剂S240对水分散性粒剂及乳油药液雾化的影响  

Effect of adjuvant S240 on atomization of water dispersible granule and emulsion solution

作　　者：张文君[1] 何雄奎[1] 宋坚利[1] 王昌陵[1] Andreas.Herbst 

机构地区：[1]中国农业大学理学院,北京100193 [2]Institute for Chemical Application Technology of JKI,Messeweg 11/12 D-38104Braunschweig 65236,Germany

出　　处：《农业工程学报》2014年第11期61-67,共7页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家自然科学基金资助项目(30971940);公益性行业(农业)科研专项(201203025-01)

摘　　要：为探究药液性质对喷头雾化的影响,该文应用粒子图像分析系统、高速摄影仪及粒径分析仪对ST110-03喷头与IDK120-03喷头进行试验研究,分析了水分散性粒剂Don-q、乳油Score及2种药剂条件下助剂Breakthru S240浓度对雾化区及雾滴谱的影响。未添加助剂时,农药剂型不同,2类喷头的雾化区及雾滴体积中径(volume medium diameter,VMD)均发生显著变化,水分散性粒剂溶液与自来水的雾化区结构、液膜长度和VMD相差不大;乳油溶液可以使2类喷头的雾化区结构发生显著变化,液膜长度分别减小35.2%和40.5%,VMD分别增大13.5%和28.9%;不同剂型农药条件下,随助剂浓度增大,2类喷头液膜区及破碎区结构均发生不同程度的变化,液膜长度均先减小后增大,VMD先增加后减小,即液膜长度变化与VMD变化呈现负相关性。结合药液理化性质研究发现表面张力是影响雾化的重要因素之一。该研究可为田间助剂浓度的添加范围及喷头雾化特性的模拟与模型建立提供参考。In order to study effect liquid characteristic on nozzle atomization process, this article applied Particle Droplets Image Analysis, high speed camera, and Malvern particle sizer to carry out experiment which focused on how Don-q, Score and the concentration of Breakthru S240 affected spraying sheet and droplet spectrum with conventional fan nozzle ST110-03 and anti-drift nozzle IDK120-03. The concentration of Don-q, Score solution was 0.275 % and 0.1 % respectively and the concentration of Breakthru S240 added into Don-q and Score was 0, 0.01%, 0.03%, 0.05%, 0.07%, 0.1%. Whole images and Detail image of ST110-03 and IDK120-03 nozzles’ spraying sheet were taken at 0.3 MPa to observe its structure and to analyze the influence of type of formulation and adjuvant concentration using high speed camera and PDIA respectively. And VMD was obtained from Malvern particle sizer. The results showed that： when spraying 0.275% Don-q solution without adjuvant, spraying sheets and VMD of ST110-03 had no significant change compared with water; For IDK120-03, the spraying sheet had slight increase and the VMD almost did not change. When spraying 0.1% Score solution without adjuvant, the spraying sheet decreased by 35.2%, 40.5% individually and the VMD increased by 13.5%, 28.9% separately for ST110-03, IDK120-03 nozzle. Meanwhile, the structure of atomization was significantly affected by formulation. For ST110-03 nozzle, the film region was significantly reduced; fragmentation in film region become seriously with increasing holes in spraying film, and the wave formation was disappeared with thinner rim. For IDK120-03 nozzle, the film region was also significantly reduced; fragmentation in film region also become seriously with increasing holes in spraying film, but the hole was smaller than that of water and 0.275% Don-q. Combined with the analysis of surface tension and viscosity, it was found that the surface tension was an important factor affecting length of spraying sheet, structure of film, the droplet size; with the re

关 键 词：喷雾 雾化 试验 助剂S240 水分散性粒剂 乳油 高速摄影 

分 类 号：S491[农业科学—植物保护]