Zeta电位法探索聚羧酸盐分散剂在农药水分散粒剂中的最佳用量

将北京广源益农化学有限责任公司生产的GY–D聚羧酸盐分散剂用于75%苯磺隆和80%二氯喹啉酸水分散粒剂配方中,保持原药、润湿剂、崩解剂的用量不变,只改变分散剂和填料的添加量,用zeta电位分析仪对被分散粒子表面电荷进行测量,并以相应的水分散粒剂的表观悬浮率进行验证试验。结果表明,在分散剂的添加量一定时,zeta电位达到最负值,此时水分散性粒剂的表观悬浮率达到最高。该方法可作为探索阴离子分散剂最佳用量的一个快速可靠的方法。

Exploration the Relatively Capable Dosage of Polycarbonate Dispersant be Used in the Water Dispersible Granule with Zeta Potentiometer

Add the dispersant which was made by Beijing Grand AgroChem Co.,Ltd.to the water dispersible granules of 75% tribenuron-methyl and 80% quinclorac,keep the dosage of technical,water and wetting agents,only change the dosage of dispersants and fillers.Check the charge of the particle surface with a zeta potentiometer,and examine the result by doing a test on suspend percentage of the corresponding water dispersible granule.The result indicate that keeping the dosage of dispersant,suspend percentage of the water dispersible granul get a extremum when its zeta potential at the least,so we can conclude that this is a fast and crediblity method to find the optimal dosage of anion dispersant.