黄原胶的用量对600g/L吡虫啉水悬浮剂流变性的影响  

Effect of the Content Xanthan Gum on the Rheological Properties of 600g/L Imidacloprid SC

作　　者：代晶晶[1] 史雅丽[1] 郭旭[1] 朱红 张丽萍 任天瑞[1] Dai Jingfing;Shi Yali;Guo Xu;Zhu Hong;Zhang Liping;Ren Tianrui(The Key Laboratory of Resource Chemistry of Ministry of Education,College of Life and Environmental science,Shanghai Normal University,Shanghai 200234,China)

机构地区：[1]上海师范大学生命与环境科学学院资源化学教育部重点实验室,上海200234

出　　处：《农药科学与管理》2018年第10期21-25,共5页Pesticide Science and Administration

基　　金：上海市科技兴农基金资助项目(批准号:C-6105-18-034)

摘　　要：研究了黄原胶的用量对600g/L吡虫啉水悬浮剂流变性的影响。分别以黄原胶添加量为2%、3%、4%制备600g/L的吡虫啉水悬浮剂,静态流变特性测定结果表明,在实验范围内,在不同黄原胶含量的悬浮剂的流变模型为Herschel-Bulkley模型。在相同流动方式下随着黄原胶的添加量增加,水悬浮剂的粘度增加,屈服值τ0变大,流变行为指数n变小,假塑性现象越来越明显,表明黄原胶是良好的结构调节剂。其中以黄原胶用量为4%制备的吡虫啉水悬浮剂黏度适中,经冷热贮后仍为假塑性流体,效果最佳。The effect of the content of xanthan gum on the rheological of 600 g/L imidacloprid aqueous suspension was studied. The Imidacloprid 600 g/L SC were prepared with the content of xanthan gum by 2% 、3% 、4% respectively. The results of static rheological properties test showed that the rheological model of SC with different xanthan gum content was Herschel-Bulkley model. At the same shearing flow with the increase of xanthan gum content,the viscosity and the yield value τ0 increased with the content of xanthan gum increasing,but the flow behavior index n was decreasing,and the trend of pseudoplasticity phenomenon was increasing apparently,which indicates that xanthan gum is a good structural regulator. The best imidacloprid 600 g/L SC with appropriate viscosity was obtained with 4% xanthan gum used,and it was still a pseudoplastic fluid trough cold and thermal storage.

关 键 词：水悬浮剂 吡虫啉 黄原胶 流变性质 

分 类 号：S482.3[农业科学—农药学]