Extensional flow of mica-filled polyethylene |
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Authors: | L A Utracki J Lara |
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Affiliation: | National Research Council of Canada, Industrial Materials Research Institute, 75, boul. De Mortagne Boucherville, Québec, Canada J4B 6Y4 |
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Abstract: | Extensional flow of mica-filled high density polyethylene was studied at 150°C in a Rheometrics elongational rheometer. The constant strain-rate mode at a rate of 10−3 to 1.0 s−1, and the constant stress mode were used. The mica content was 0, 25, 40, and 60 weight percent. In both testing modes, the steady state elongational viscosities were obtained; those for the filled samples were about ten to twenty times larger than the shear viscosity at corresponding (low) rates of deformation. |
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