WOOD FLOUR – RECYCLED POLYOL BASED POLYURETHANE LIGHTWEIGHT COMPOSITES

ILONA RÁCZ; ENDRE ANDERSEN; MIRTA I. ARANGUREN; NORMA E. MARCOVICH

JOURNAL OF COMPOSITE MATERIALS

SAGE PUBLICATIONS LTD

Lugar: LONDON, ENGLAND; Año: 2009 vol. 43 p. 2871 - 2884

0021-9983

This work was 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 increase with filler concentration. The addition of Al(OH)3 did not reduced the flammability of the composites with low WF concentrations; however, some improvements were found in the case of composites prepared with 20 wt. % WF.