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Continuous microcellular polystyrene foam extrusion with supercritical [CO.sub.2].: An article from: Polymer Engineering and Science
Book Details
PublisherSociety of Plastics Engineers, Inc.
ISBN / ASINB0008FVNGM
ISBN-13978B0008FVNG8
MarketplaceFrance 🇫🇷
Description
This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on November 1, 2002. The length of the article is 6374 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 continuous production of polystyrene microcellular foams with supercritical 002 was achieved on a two-stage single-screw extruder. Simulations related to the foaming process were accomplished by modeling the phase equilibria with the Sanchez-Lacombe equation of state and combining the equations of motion, the energy balance, and the Carreau viscosity model to characterize the flow field and pressure distribution in the die. The position of nucleation in the die was determined from the simulation results via a computational fluid dynamics code (FLUENT). Experimental parameters were selected according to the [T.sub.g] and phase equilibria. The effects of [CO.sub.2] concentration and die pressure are explored. Below the solubility limit, higher [CO.sub.2] concentrations lead to smaller cell size and greater cell density. With an increase of die pressure, the cell size decreases and the cell density increases.
Citation Details
Title: Continuous microcellular polystyrene foam extrusion with supercritical [CO.sub.2].
Author: Xiangmin Han
Publication:Polymer Engineering and Science (Refereed)
Date: November 1, 2002
Publisher: Society of Plastics Engineers, Inc.
Volume: 42 Issue: 11 Page: 2094(13)
Distributed by Thomson Gale
From the author: The continuous production of polystyrene microcellular foams with supercritical 002 was achieved on a two-stage single-screw extruder. Simulations related to the foaming process were accomplished by modeling the phase equilibria with the Sanchez-Lacombe equation of state and combining the equations of motion, the energy balance, and the Carreau viscosity model to characterize the flow field and pressure distribution in the die. The position of nucleation in the die was determined from the simulation results via a computational fluid dynamics code (FLUENT). Experimental parameters were selected according to the [T.sub.g] and phase equilibria. The effects of [CO.sub.2] concentration and die pressure are explored. Below the solubility limit, higher [CO.sub.2] concentrations lead to smaller cell size and greater cell density. With an increase of die pressure, the cell size decreases and the cell density increases.
Citation Details
Title: Continuous microcellular polystyrene foam extrusion with supercritical [CO.sub.2].
Author: Xiangmin Han
Publication:Polymer Engineering and Science (Refereed)
Date: November 1, 2002
Publisher: Society of Plastics Engineers, Inc.
Volume: 42 Issue: 11 Page: 2094(13)
Distributed by Thomson Gale
