| 农药助剂溶液在靶标表面的动态润湿性 |
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| 引用本文： | 庞红宇,张现峰,张红艳,杜凤沛.农药助剂溶液在靶标表面的动态润湿性[J].农药学学报,2006,8(2):157-161. |
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| 作者姓名： | 庞红宇 张现峰 张红艳 杜凤沛 |
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| 作者单位： | 1.中国农业大学 理学院 应用化学系,北京100094 |
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| 基金项目： | 中国农业大学科研启动基金资助，农业部农药化学及农药使用技术重点开放实验室资助项目 |
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| 摘 要： | 通过测量3种常用助剂十二烷基苯磺酸钠(LAS)、壬基酚聚氧乙烯醚(OP-10)及全氟辛磺酸四乙基胺(FT-248)水溶液的动态表面张力(DST),以及液滴在石蜡和玉米叶片上的动态接触角(DCA),讨论了DST对药液在靶标上的润湿性和铺展的影响。结果表明:药液落在靶标上的瞬时DST越小,则与靶标间的DCA越小,越容易在靶标上润湿;DST降低得越快,铺展的速度也越快。应用平衡表面张力(EST)来评价雾滴在靶标上的动态润湿行为具有较大的局限性,用DST能更确切地分析药液在靶标上的铺展过程。
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| 关 键 词： | 农药助剂 平衡表面张力(EST) 动态表面张力(DST) 动态接触角(DCA) |
| 文章编号： | 1008-7303(2006)02-0157-05 |
| 收稿时间： | 12 9 2005 12:00AM |
| 修稿时间： | 04 1 2006 12:00AM |
Dynamic Wettability of Pesticide Adjuvant Solution on Target |
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| PANG Hong-yu,ZHANG Xian-feng,ZHANG Hong-yan and DU Feng-pei.Dynamic Wettability of Pesticide Adjuvant Solution on Target[J].Chinese Journal of Pesticide Science,2006,8(2):157-161. |
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| Authors: | PANG Hong-yu ZHANG Xian-feng ZHANG Hong-yan and DU Feng-pei |
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| Institution: | 1.Department of Applied Chemistry,College of Science,China Agricultural University, Beijing 100094, China |
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| Abstract: | For solving the bad wetting of the pesticide solution and the suitable concentration of thepesticide adjuvant for spraying the DSTdynamic surface tension of several adjuvantsLAS,OP-10 and FT-248 and the dynamic contact anglesDCA of little drop on paraffin and maize weredetermined.The effect of DST and DCA on wettability of spraying droplet was discussed.The results showed that the less DST,the less DCA,the betterwetting effect,and the faster decreasing of DST,the faster spreading of the solution.DST as aparameter for studying wetting progress was more authentic thanequilibrium surface tensionEST. |
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| Keywords: | pesticide adjuvant equilibrium surface tension(EST) dynamic surface tension(DST) dynamic contact angle(DCA) |
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