Direct comparison between rotational and extrusion rheometers

Materials Research

Asad Ullah Khan¹  Nasir Mahmood¹  Aqeel Ahemd Bazmi¹ 

[1] ,COMSATS, Institute of Information Technology Department of Chemical Engineering Lahore,Pakistan

关键词: rheology;    extrusion;    flow;    stresses;    mechanical properties;   

DOI  :  10.1590/S1516-14392009000400017

来源: SciELO

【 摘 要 】

The use of cone and plate rotational rheology to characterize the flow properties of concentrated dispersion and extrusion methods to determine the rheological properties of pastes have become established rheometric techniques. Direct comparison between the results obtained from the two techniques has not previously been demonstrated. In this article the results of such a comparison using established experimental methods and associated analysis are reported. It is found that for most samples investigated the difference in the calculated values of shear stress at a shear rate of 5/s is <10%. Data for a series of slurries, composed of various solid fractions of lime waste, are reported over a shear rate of 0-10/s. The computed results for two techniques are shown to be, within the experimental error, identical over this shear rate range.

【 授权许可】

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