Shear flow of a molten polymer
β Scribed by B. V. Berdyshev; M. V. Dergachev; V. K. Skuratov
- Publisher
- Springer
- Year
- 1999
- Tongue
- English
- Weight
- 293 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0009-2355
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π SIMILAR VOLUMES
The flow of molten polymer through porous media has been investigoted o t constant tempemtures and flow rates. Temperatures of 375", 400", and 425"F., flow rates from 12 to 60 g./min. and particle sizes from 0.054 in. to 6 mm. in diameter were studied. A modified Darcy's law was developed using the
On the basic assumption that viscosity is a continuous function of shear rate it is deduced that any non-Newtonian fluid should conform to a flow equation of the form where ~ is the viscosity at shear rate D, 7/0 and ~7o~ are limiting values at respectively zero and infinite rate of shear, and = is