SCI和EI收录∣中国化工学会会刊

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

• Fluid Dynamics and Transport Phenomena •     Next Articles

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. 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:2017-07-06 Published:2017-05-28
  • Supported by:
    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. 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
  • 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).

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+n. It was revealed that the mixed fluid belonged to Yield Pseudoplastic Fluid.

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

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+n. It was revealed that the mixed fluid belonged to Yield Pseudoplastic Fluid.

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