Effect of chemical blowing agent on cell structure and mechanical properties of EPDM foam, and peel strength and thermal conductivity of wood/NR composite-EPDM foam laminates
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Publication Details
Author list: Yamsaengsung W., Sombatsompop N.
Publisher: Elsevier
Publication year: 2009
Journal: Composites Part B: Engineering (1359-8368)
Volume number: 40
Issue number: 7
Start page: 594
End page: 600
Number of pages: 7
ISSN: 1359-8368
eISSN: 1879-1069
Languages: English-Great Britain (EN-GB)
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Abstract
Melt-laminates of wood/natural rubber (wood/NR) composite and ethylene-propylene diene rubber (EPDM) foam were prepared by compression molding technique. Two different forms of 4,4′oxybis(benzenesulfonylhydrazide) (OBSH) blowing agent were used; pure OBSH (designated as OBSH) and ethylene-propylene bound OBSH (designated as EPR-b-OBSH). The effect of the OBSH concentration on the cell structures and mechanical properties of EPDM foam, and the peel strength and thermal conductivity of wood/NR composite-foamed EPDM laminates was examined. It was found that the EPR-b-OBSH gave EPDM foam with greater number of cell structures, higher porosities and resistances to water penetration on the foam surface. However, the EPDM with EPR-b-OBSH agent had worse elastic recovery as compared to that with OBSH due to deformation of cell structures after prolonged compression loading. The recommended concentrations for EPR-b-OBSH and OBSH blowing agents were 3.0 and 5.0 phr, respectively, for the optimum interfacial adhesion and low thermal conductivity. © 2009 Elsevier Ltd. All rights reserved.
Keywords
A. Foams, B. Adhesion, C. Mechanical properties, D. Composites
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