Wood Flour-Recycled Polyol Based Polyurethane Lightweight Composites

I. RACZ; E. ANDERSEN; M.I. ARANGUREN; N.E. MARCOVICH

JOURNAL OF COMPOSITE MATERIALS

SAGEPUB

Lugar: United Kingdom, ...; Año: 2009 vol. 43 p. 2871 - 2884

0021-9983

ABSTRACT: 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 20wt% WF. KEY WORDS: polymermatrix composites, mechanical properties, thermomechanical response, polyurethane, wood flour.