發(fā)布時(shí)間：2018-04-23 16:01

  本文選題：聚維酮KK值 + 流變儀　； 參考：《中國醫(yī)藥工業(yè)雜志》2017年06期

【摘要】：采用流變儀測定聚維酮K30的流變曲線、屈服值和觸變性,考察了測定溫度對(duì)樣品流變學(xué)性質(zhì)的影響。通過試驗(yàn)確定用流變儀測定聚維酮K30黏度的溫度為(25±0.1)℃、剪切應(yīng)力為0.2 Pa,測得樣品溶液和溶劑水的動(dòng)力黏度,通過計(jì)算可得樣品的相對(duì)黏度和K值。本法操作簡捷、準(zhǔn)確、適用性廣、重現(xiàn)性好。相比傳統(tǒng)的烏氏毛細(xì)管黏度計(jì)法,本法中流變儀溫控系統(tǒng)可快速精準(zhǔn)地控制樣品達(dá)到預(yù)定溫度,精度可達(dá)0.01℃;除配制、添加樣品外,其余操作均由儀器自動(dòng)完成,減少了手工操作和人為判斷引起的實(shí)驗(yàn)誤差。
[Abstract]:The rheological curve, yield value and thixotropy of polyvidone K30 were measured by rheometer. The effect of temperature on the rheological properties of the samples was investigated. The temperature and shear stress of polyvidone K30 viscosity determined by rheometer were 25 鹵0.1 鈩，

本文編號(hào)：1792652