新疆膨润土水分散液流变学性质的研究  

Rheological properties of Xinjiang bentonite suspension

作　　者：邢君芬[1] 陈新梅[1] 李晶 

机构地区：[1]新疆维吾尔自治区人民医院临床药学研究所

出　　处：《中国药学杂志》1997年第7期413-415,共3页Chinese Pharmaceutical Journal

摘　　要：目的：对新疆膨润土水分散液的流变学性质进行系统研究。方法：采用ＮＤＪ－７９型旋转式粘度计，以不同切变速率下切变应力的变化，于（２５±０．５）℃测试不同浓度水分散液的流变学性质。结果：确立了新疆膨润土水分散液的流动特性为塑性兼触变流动，绘制了其不同浓度水分散液流变曲线，并建立了塑性粘度Ｕ、塑变值ｆ与浓度ｃ的函数关系ｌｇＵ＝１．８６ｌｇｃ－４．２８８，ｌｇｆ＝０．１６９＋０．０２４５６ｃ。OBJECTIVE: To study the rheological properties of Xinjiang bentonite suspension. METHODS: A NDJ-79 rotative viscometry was used to measure the changes of shearing stress by various rates of shearting. RESULTS: Plastic and thixotropic flow appeared in the susppensions. The flow curves were drawn and the function of plastic viscosity U and yield value f to concentration c of bentonite were established respectively:lg U=1.86 lg c-4.288,lg f=0.169+ 0.024 56 c . CONCLUSION: The suspension of Xinjiang bentonite can be applied in pharmacy.

关 键 词：新疆膨润土 流变学 药用辅料 

分 类 号：R943[医药卫生—药剂学]