The application of the mixed system of polyoxyethylene ether and polycarboxylate in 430 g·L-1 tebuconazole suspension concentrate

Journal of Shanghai Normal University (Natural Sciences)

REN Tianrui¹  ZHANG Bo¹  ZHU Hong¹  WENG Yujia¹ 

[1] College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China;

关键词: tebuconazole;    suspension concentrate(sc);    polyoxyethylene ether;    polycarboxylate;    suspension stability;   

DOI  :  10.3969/J.ISSN.1000-5137.2020.02.005

来源: DOAJ

【 摘 要 】

The mixed surfactant system is helpful to improve suspension stability of pesticide suspension concentrate(SC). Herein, the effect of the mixed system of polysacchanate dispersant SD-840 and polyoxyethylene ether dispersant 601P on the stability of 430 g·L^-1 tebuconazole SC was studied.The changes of the particle size, zeta potential, viscosity, and suspension rate of 430 g·L^-1 tebuconazole SC before and after the thermal storage were carefully investigated.The results showed that the suspension stability of 430 g·L^-1 tebuconazole SC obtained by the mixed system was superior to that of SC prepared by only SD-840 or 601P, respectively. Especially, the SC obtained by the mixed system with a 0.75 mass ratio between SD-840 and 601P exhibited the superior suspension stability and minimum variation of particle size and suspension rate before and after thermal storage.The suspension rates and D₉₀ particle diameters before and after thermal storage were 99.47%, 96.58% and 2.35 μm, 2.50 μm, respectively.

【 授权许可】

Unknown