Journal
COMPOSITES PART B-ENGINEERING
Volume 40, Issue 7, Pages 594-600Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2009.04.003
Keywords
Foams; Adhesion; Mechanical properties; Composites
Funding
- Commission on Higher Education
- Thailand Research Fund
- Graduate School of Energy and Environment [UGSEE/THESIS/119]
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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 ethylenepropylene 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. (C) 2009 Elsevier Ltd. All rights reserved.
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