Effect of surfactant on zeta potential and rheology behavior of methylene bis (thiocyanate) suspension concentrate

doi:10.1016/j.cjche.2016.08.008

›› 2017, Vol. 25 ›› Issue (5): 541-546.DOI: 10.1016/j.cjche.2016.08.008

• Fluid Dynamics and Transport Phenomena • 下一篇

Effect of surfactant on zeta potential and rheology behavior of methylene bis (thiocyanate) suspension concentrate

Jianfeng Hu¹, Yan Cai¹, Shan Lu¹, Jiezhen Xu¹, Zhongrun Yun², Jianheng Huang¹, Yuliang Wen³, Jinqing Qu¹

1 School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China;
2 School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China;
3 Guangzhou Goaland Energy Conservation Tech Co., Ltd, of Luogang District, Guangzhou 510663, China

收稿日期:2016-06-21 修回日期:2016-08-08 出版日期:2017-05-28 发布日期:2017-07-06
通讯作者: Jianfeng Hu,E-mail address:cejfhu@scut.edu.cn
基金资助:
Supported by Guangzhou Science Technology and Innovation Commission (201508030019),China Scholarship Council (201506155073) and National Undergraduate Innovative and Entrepreneurial Training Program (201610561089).

Effect of surfactant on zeta potential and rheology behavior of methylene bis (thiocyanate) suspension concentrate

Jianfeng Hu¹, Yan Cai¹, Shan Lu¹, Jiezhen Xu¹, Zhongrun Yun², Jianheng Huang¹, Yuliang Wen³, Jinqing Qu¹

1 School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China;
2 School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China;
3 Guangzhou Goaland Energy Conservation Tech Co., Ltd, of Luogang District, Guangzhou 510663, China

Received:2016-06-21 Revised:2016-08-08 Online:2017-05-28 Published:2017-07-06
Supported by:
Supported by Guangzhou Science Technology and Innovation Commission (201508030019),China Scholarship Council (201506155073) and National Undergraduate Innovative and Entrepreneurial Training Program (201610561089).

摘要/Abstract

摘要： Methylene bis(thiocyanate) (MBT) is insoluble in water, so suspension concentrate (SC) of MBT is extremely relied on surfactants. In this paper, SC of MBT was prepared with wet-grinding technology, and the effect of surfactants, such as Morwet D425 (D425) and Morwet EFW (EFW) (two kinds of dispersant), on the Zeta potential and rheology behavior of MBT SC were investigated. The results showed that the Zeta potential absolute value of MBT SC increased with the increasing content of D425, and it decreased with the increasing content of EFW at acidic solution (pH=4.5). In the combination system of D425 and EFW, Zeta potential of MBT SC decreased first and then increased with the increasing content of EFW. The relationship between shear rate (γ) and viscosity (η) was studied according to Herschel-Bulkley model:η=η₀+_k/γ, and the relationship between shear rate (γ) and shear force (τ) was investigated according to:τ=τ₀+Kγⁿ. It was revealed that the mixed fluid belonged to Yield Pseudoplastic Fluid.

关键词: Methylene bis (thiocyanate), Rheology, Shear rate, Shear force

Abstract: Methylene bis(thiocyanate) (MBT) is insoluble in water, so suspension concentrate (SC) of MBT is extremely relied on surfactants. In this paper, SC of MBT was prepared with wet-grinding technology, and the effect of surfactants, such as Morwet D425 (D425) and Morwet EFW (EFW) (two kinds of dispersant), on the Zeta potential and rheology behavior of MBT SC were investigated. The results showed that the Zeta potential absolute value of MBT SC increased with the increasing content of D425, and it decreased with the increasing content of EFW at acidic solution (pH=4.5). In the combination system of D425 and EFW, Zeta potential of MBT SC decreased first and then increased with the increasing content of EFW. The relationship between shear rate (γ) and viscosity (η) was studied according to Herschel-Bulkley model:η=η₀+_k/γ, and the relationship between shear rate (γ) and shear force (τ) was investigated according to:τ=τ₀+Kγⁿ. It was revealed that the mixed fluid belonged to Yield Pseudoplastic Fluid.

Key words: Methylene bis (thiocyanate), Rheology, Shear rate, Shear force

Jianfeng Hu, Yan Cai, Shan Lu, Jiezhen Xu, Zhongrun Yun, Jianheng Huang, Yuliang Wen, Jinqing Qu. Effect of surfactant on zeta potential and rheology behavior of methylene bis (thiocyanate) suspension concentrate[J]. , 2017, 25(5): 541-546.

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Effect of surfactant on zeta potential and rheology behavior of methylene bis (thiocyanate) suspension concentrate

Effect of surfactant on zeta potential and rheology behavior of methylene bis (thiocyanate) suspension concentrate

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