盐对粘土／氢氧化铝镁／甘油胶体性能的影响

通过电泳淌度、流变参数和中压滤失量的测定，研究了ＫＣｌ和ＡｌＣｌ３对带永久负电荷的蒙脱土与带永久正电荷的氢氧化铝镁／甘油形成的混合悬浮体胶体性能的影响，并对影响机理进行了深入探讨

Effects of Elctrolytes on Colloidal Properties of Montmorillonite/Aluminum Magnesium Hydroxide/Glycerol Suspension

It is shown in this paper that KCl and AlCl 3 affect the colloidal properties of the mixed suspension consisting of montmorillonite(Mt) particles (possessing permanent negative charges) and aluminum magnesium hydroxide(possessing permanent positive charges)/glycerol particles by measuring electrophoretic mobilities( U ), rheological parameters and middle pressure fluid loss( FL ). With increase of KCl concentration, U in absolute value, apparent viscosity ( AV ) and Bingham yield point ( YP ) of the mixed suspension increase first, then decrease, showing a maximum value at KCl content about 1 0%, and change no longer at KCl content above 4 0%. With increase of AlCl 3 concentration, U decreases in absolute value, and AV and YP decrease first and then increase and then decrease again. The FL increases with the increase of KCl and AlCl 3 contents, indicating that aggregation in the mixed suspension is aggravated.