悬浮剂是一种多相系统,物理性状复杂,主要表现在流变性质和沉降现象,而这两种现象在保证质量和量取剂量方面具有重要意义。一般悬浮剂的稠度(包括结构粘度、屈服值、触变性等)与沉降速度有密切关系。为评定悬浮剂的质量及阐明上述二者的关系,本文采用流变学的方法就磺胺噻唑碳酸氢钠悬浮剂中添加显似非牛顿流型的助悬剂西黃蓄胶、甲基纤维素(MC)、羧基甲基纤维素钠(CMC)研究悬浮剂的流变性质和沉降速度,并对两者的关系作了必要的探讨。取磺胺噻唑、碳酸氢钠各10克加适宜的助悬剂按常法加水制成悬浮剂。所用助悬剂为西黃蓍胶、MC、CMC三种。应用Slomer转筒粘度计在不同的切变应力下测出各个切 Suspension is a multiphase system, the physical properties of complex, mainly in the rheological properties and sedimentation phenomenon, and these two phenomena in ensuring the quality and dosage is of great significance. Suspension of the general consistency (including structural viscosity, yield value, thixotropy, etc.) and the settling velocity are closely related. In order to evaluate the quality of suspending agent and elucidate the relationship between them, this paper adopts the rheological method to add the non-Newtonian suspending agent to the sulfathiazole sodium bicarbonate suspension, MC) and sodium carboxymethyl cellulose (CMC) were used to study the rheological properties and sedimentation rate of the suspending agent. The relationship between them was also discussed. Take sulfathiazole, sodium bicarbonate each 10 grams plus appropriate suspending agent according to the usual method of adding water to make a suspension agent. Suspension used for the tragacanth, MC, CMC three. Slice roll viscometer was used to measure each cut under different shear stresses