Physical and Mechanical Properties of Veneer-Polyurethane Foam Composites

Authors

  • Levente Denes

Keywords:

Composite, veneer, polyurethane foam, moisture, strength, MOE, RPD

Abstract

The purpose of this study was to develop core composite materials using veneer residues combined with appropriate matrix material. This study describes the evaluation processes of physical and mechanical properties of a recently developed polyurethane-veneer composite. In the layered construction of the product, the veneers provide strength and stiffness, whereas the polyurethane foam has a lateral supporting effect and sets the final dimensions in thickness of the slabs. Two key properties were studied. First, the density in relation to the wood constituent's moisture content and ambient RH was analyzed by three-level, two-factor, robust parametric design (3II RPD). Also, a two-level, three-factor + center point experimental design (2III + Cp) helped to evaluate the effects of the selected parameters on compression strength. Standard test results confirmed the improved compression force resistance compared with foams without reinforcement, whereas the density of the new composite remained way below the densities of core materials currently on the market. The intended use of the developed composite includes carrier substrates for countertops, interior door leaves, indoor heat insulating, and acoustic insulation panels as well as structural insulated panels.

References

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Published

2014-10-06

Issue

Vol. 46 No. 4 (2014)

Section

Research Contributions

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