【摘要】 由钠型蒙脱土悬浮体和水解聚丙烯酰胺组成的体系有负触变现象,对负触变性的形成条件和影响因素作了初步探讨。更多还原

【Abstract】 In the course of a study on the change in the fiuidity and thixotropy of montmori-llonite suspension by added hydrolyzed polyacryamide, it was noticed that some of themdisplayed unusual thixotropic behaviour in that they showed in their natural state anegative thixotropy; in other words,the fluidity of the suspension increased with time.This negative thixotropic behaviour of this system was time-dependent, as can be seenfrom Figure 1 (Chinese Text) and they show clockwise hysteresis loops. The consistencyof the suspension has a considerable influence on this unusual behaviour and additionsof salts destroy the ability of the materials to build up a structure possessing a"negativethixotropic" behaviour.更多还原