【摘要】 研究了润湿剂、分散剂、黏结剂、加工工艺、造粒前加水量、烘干温度、水质条件及稀释质量浓度等几个因素对80%吡虫啉WG制剂性能的影响。研究结果表明:润湿剂不仅对水分散粒剂的润湿性能产生直接和主要影响,而且还间接影响水分散粒剂的崩解性能;GY系列高分子羧酸盐分散剂在80%吡虫啉WG中具有较好的分散效果;黏结剂不仅影响粉料的捏合程度和可塑性,而且还对粒子的崩解和悬浮性能产生影响;气流粉碎可以较大程度的减小粉料细度,其粉碎效率是机械粉碎的两倍以上;造粒方式对水分散粒剂崩解性能影响大但对悬浮性能影响不大;造粒前加水量较大程度地影响粉料的捏合,从而影响粒子形状;烘干温度和烘干时间对粒子的崩解性影响较大;水温、水的硬度及稀释倍数都对悬浮液的稳定性产生不同程度的影响,其中,稀释质量浓度影响最大,水的硬度影响其次,而水温对其影响较小。稀释倍数越高,悬浮率越高;水的硬度越高,悬浮率越低,起泡量越少;一定温度范围内,水温越高,悬浮率相应越低。更多还原

【Abstract】 This paper researched several factors of affecting the quality of Imidacloprid water dispersible granules, such as in wetter, dispersant, binder, added water before granulation, baking temperature, process technique, diluted times, and so on. According to the experiments, we could conclude that the wetter had good and direct effect on wetting property of formulation, it could also affect the disintegration property indirectly. A series of "GY", a kind of macromolecule polycarboxylate dispersant, had good effect on the dispersible property of 80% imidacloprid WG. Furthermore, the binder affected the degree of kneading of the powder, it also affected the disintegrability and suspension stability as well. Air flow pulverizing could minish the particle size in larger extent, and the efficiency was more than twice as much as that of the machine pulverizing. Besides, granulation mode had an important effect on disintegrability of WG while little effects on stability of the suspension. The water which added before granulation had significant influence on the appearance of the granule. Baking temperature and baking time could impacted disintegra- tion of WG significantly. Finally, water temperature, the hardness of water and the dilution times of suspension effected the stability of the suspension respectively, among the three factors, the dilution times was the most important, and the hardness was the second important, and the water temperature was the least important. Detailedly, the more watery and the harder the water was, the higher suspension rate the suspension was while the higher the water temperature was, less suspension rate the suspension was.更多还原