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Processing of Polyurethane/Polystyrene Hybrid Foam and Numerical Simulation

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Authors
Lee, Won Ho; Lee, Seok Won; Kang, Tae Jin; Chung, Kwansoo; Youn, Jae Ryoun
Issue Date
2002-12
Publisher
The Korean Fiber Society
Citation
Fibers and Polymers, v.3(4), pp.159-168
Keywords
PolyurethanePolystyreneControl volume finite element method
Abstract
Polyurethane foams were produced by using a homogenizer as a mixing equipment. Effects of stirring speed on the
foam structure were investigated with SEM observations. Variation of the bubble size, density of the foam, compressive
strength, and thermal conductivity were studied. A hybrid foam consisting of polyurethane foam and commercial polystyrene
foam is produced. Mechanical and thermal properties of the hybrid foam were compared with those of pure polyurethane
foam. Advancement of flow front during mold filling was observed by using a digital camcorder. Four types of mold geometry
were used for mold filling experiments. Flow during mold filling was analyzed by using a two-dimensional control volume
finite element method. Variation of foam density with respect to time was experimentally measured. Creeping flow,
uniform density, uniform conversion, and uniform temperature were assumed for the numerical simulation. It was assumed
for the numerical analysis that the cavity has thin planar geometry and the viscosity is constant. The theoretical predictions
were compared with the experimental results and showed good agreement.
ISSN
1229-9197
Language
English
URI
http://hdl.handle.net/10371/19171
DOI
https://doi.org/10.1007/BF02912661
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Material Science and Engineering (재료공학부) Journal Papers (저널논문_재료공학부)
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