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Journal of Composite Materials
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0021998309345308v1
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Wood Flour — Recycled Polyol Based Polyurethane Lightweight Composites

Ilona Rácz

Bay Zoltan Institute for Materials Science and Technology Fehérvári u. 130, Budapest, Hungary

Endre Andersen

Bay Zoltan Institute for Materials Science and Technology Fehérvári u. 130, Budapest, Hungary

Mirta I. Aranguren

INTEMA - Chemical Engineering Department, Universidad Nacional de Mar del Plata, Juan B. Justo 4302, Mar del Plata, Argentina

Norma E. Marcovich

INTEMA - Chemical Engineering Department, Universidad Nacional de Mar del Plata, Juan B. Justo 4302, Mar del Plata, Argentina, marcovic{at}fi.mdp.edu.ar

This work is focused on the production and characterization of lightweight polyurethane (PU) composites reinforced with pine wood flour (WF), which can have applications in car interior panels, construction, and acoustic insulation. A crosslinked PU formulated from a recycled polyol was used as matrix. The mechanical performance of the reinforced composites was studied through tensile, three point bending, and dynamic mechanical tests. The strength, modulus, and storage modulus increased with filler concentration.The addition of Al(OH)3 did not reduce the flammability of the composites with low WF concentrations; however, some improvements were found in the case of composites prepared with 20 wt% WF.

Key Words: polymer—matrix composites • mechanical properties • thermomechanical response • polyurethane • wood flour.

This version was published on November 1, 2009

Journal of Composite Materials, Vol. 43, No. 24, 2871-2884 (2009)
DOI: 10.1177/0021998309345308
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