Shear viscosity of carbon black filled polypropylene at very low shear stresses.: An article from: Polymer Engineering and Science

This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on April 1, 1998. The length of the article is 2896 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

From the author: The shear viscosity of carbon black filled polypropylene with a range of different carbon blacks was investigated. This was accomplished using (a) a constant shear stress creep instrument, (b) a cone-plate rotational rheometer, (c) a capillary extrusion rheometer. It was found that stresses exist for these compounds below which there are only finite deformations and no steady flow. Much attention was given to measurements of creep at low stresses, especially in the neighborhood of yield values. The magnitudes of yield stresses obtained from such creep measurements are significantly lower than those obtained using standard extrapolation to zero shear rate of higher stress data from rotational instruments. The shear viscosity behavior near the yield value differs significantly depending upon the carbon black used. A high shear viscosity was observed ([approximately][10.sup.9] to [10.sup.10] Pa [center dot] s) plateau in some compounds.

Citation Details
Title: Shear viscosity of carbon black filled polypropylene at very low shear stresses.
Author: Takumi Araki
Publication:Polymer Engineering and Science (Refereed)
Date: April 1, 1998
Publisher: Society of Plastics Engineers, Inc.
Volume: v38 Issue: n4 Page: p616(6)

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