高等学校化学学报 ›› 1998, Vol. 19 ›› Issue (8): 1308.

• 论文 • 上一篇    下一篇

球胶态颗粒在中等电位条件下双电层相互作用能和力

郭继志1, 罗根祥1, 王好平1, 赵雄虎2   

  1. 1. 抚顺石油学院石油化工系, 抚顺, 113001;
    2. 石油大学石油工程系, 北京, 102200
  • 收稿日期:1997-05-08 出版日期:1998-08-24 发布日期:1998-08-24
  • 通讯作者: 王好平
  • 作者简介:郭继志,男,33岁,副教授.
  • 基金资助:

    国家自然科学基金(批准号:29673012)资助课题.

Interaction Energy and Force of Spherical Colloidal Particles at Moderate Potential

GUO Ji-Zhi1, LUO Gen-Xiang1, WANG Hao-Ping1, ZHAO Xiong-Hu2   

  1. 1. Department of Petrochemical Engineering, Fushun Petroleum Institute, Fushun, 113001;
    2. Department of Petroleum Engineering, University of Petroleum, Beijing, 102200
  • Received:1997-05-08 Online:1998-08-24 Published:1998-08-24

摘要: 根据有效表面电位的定义,使用改进的Derjaguin法,推导出在中等电位条件下等同和不等同球形胶态颗粒相互作用能和力的近似表达式.与精确的数值解相比,对等同球颗粒,表面电位≤100mV;对不等同球颗粒,表面电位≤75mV;最大相对误差均小于±10%,表明该近似式是目前较好的.

关键词: 排斥能, 排斥力,

Abstract: Using the definition of the effective reduced surface potential and resorting to improved Derjaguin method, we derive the formula for the interaction energy and force of identical and dissimilar spherical colloidal particles, valid up to the moderate potential. The agreement with exact numerical values is considerably improved on providing the surface potential ≤100 mV (for identical) and ≤75 mV (for dissimilar), the maximum relative errors are less than ±10%. For the identical and dissimilar spherical particles, our formula are best approximate expressions at present.

Key words: Repulsive energy, Repulsive force, Spheres

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