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引言流变学(Rheology)是研究液体流动和固体变形的科学.流变学所研究的对象往往具有二重性格,它们既具有液体的流动性貭同时也带着固体弹性变形的性貭.例如软膏刑在放置时保持着一定的固体形态,搅拌时则显示着流体的流动和变形.此外胶体制剂、乳剂、悬浮液、一些半固体制剂均具有流变性貭.对于这些制剂的流变性质以往多凭经验来确定.譬如软膏的软、硬、稠、稀、粘性、塑性等一向均凭主观的感觉来确定,显然对制剂的
INTRODUCTION Rheology is a science that studies fluid flow and solid deformation. The objects studied by rheology tend to have a dual personality that is both fluid and solid with elastic deformation such as ointment The torture maintains a certain solid state when placed and shows the flow and deformation of the fluid when agitated.In addition, the rheological properties of colloidal preparations, emulsions, suspensions, and some semi-solid preparations are all high. For the rheological properties of these preparations, For example, ointment soft, hard, thick, thin, sticky, plastic, etc. have always been based on the subjective feeling to determine, obviously on the preparation of