Back SearchTitle: POLYETHYLENE-KEVLAR COMPOSITE FOAMS III: TORSION PROPERTIES
Page Range: p.1-14
Author(s): Zhang Y; Rodrigue D
File size: 95K
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Buy the pdf (non-subscribers)Journal: Cellular Polymers
Issue Year: cp
Volume: 24
Issue No: No. 1
Abstract
High density, closed-cell composite foams were prepared from PE and either unmodified or polymerisation-filled Kevlar pulp by compression moulding and their shear moduli determined by torsion rectangular tests. The effects of skin layers and foam density on the shear moduli of the foam composites were examined and the experimentally determined shear moduli compared with uniform, structural and composite foam models to establish which model best fitted the experimental data. It was found that normalised modulus could be predicted by a sandwich model combined with Berlin's approach and Rosen's model for fibre aspect ratio. 21 refs.
Title: CORRELATION OF DECOMPRESSION TIME AND FOAMING TEMPERATURE ON THE CELL DENSITY OF FOAMED POLYSTYRENE
Page Range: p.15-27
Author(s): Muratani K; Shimbo M; Miyano Y
File size: 234K
Download the pdf (subscribers only) Buy the pdf (non-subscribers)Journal: Cellular Polymers
Issue Year: cp
Volume: 24
Issue No: No. 1
Abstract
Polystyrene foams were prepared at different foaming temperatures and decompression rates using a device capable of accurately controlling temperature and decompression rates. The relationship between foaming temperature and decompression rate of cell density was investigated and the equivalency of decomposition time obtained from decompression rate and foaming temperature of cell density examined. A correlation was maintained between temperature dependence and time dependence of cell density and could be expressed in the form of a master curve. 17 refs.