Elongational behavior of short glass fiber reinforced polypropylene melts

DOI	Resolve DOI: https://doi.org/10.1002/pc.750050408
Author	Search for: Kamal, M. R.; Search for: Mutel, A. T.; Search for: Utracki, L. A.¹
Affiliation	National Research Council Canada
Format	Text, Article
Abstract	The Rheometrics Elongational Rheometer was employed to study the uniaxial extensional flow of glass fiber filled polypropylene melts, in which the fiber concentration, c, varied between zero and 40 weight percent. The constant strain rate mode was used for strain rates, ε between 0.003 and 0.6 s⁻¹. Steady state elongational viscosities were observed in most cases for fiber filled polypropylene melts, even at rates at which the stress continued to increase for unfilled polypropylene. The rate of relative stress growth increased with ε and was affected by the addition of fibers. The steady elongational viscosity of the fiber reinforced melts was found to decrease with increasing ε and to increase with increasing c. Yield stresses were observed in elongational flow at high concentrations, although there was no clear evidence of yield in steady shear.
Publication date	1984-10
Publisher	Wiley
In	Polymer Composites 5, no. 4: 289–298.
Language	English
Peer reviewed	Yes
NRC number	CNRC 26812 NRC-IGM84-000-484
NPARC number	23004064
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Record identifier	a0d79616-0b12-444b-9125-7c5047c875d0
Record created	2018-09-21
Record modified	2020-03-13