INTEMA   05428
INSTITUTO DE INVESTIGACIONES EN CIENCIA Y TECNOLOGIA DE MATERIALES
Unidad Ejecutora - UE
artículos
Título:
POLYURETHANE FOAMS OBTAINED FROM CASTOR OIL BASED POLYOL AND FILLED WITH WOOD FLOUR
Autor/es:
M. A. MOSIEWICKI; G. A. DELL'ARCIPRETE; M. I ARANGUREN; N. E. MARCOVICH
Revista:
JOURNAL OF COMPOSITE MATERIALS
Editorial:
SAGE PUBLICATIONS LTD
Referencias:
Lugar: LONDON, ENGLAND; Año: 2008
ISSN:
0021-9983
Resumen:
A natural polyol was prepared from castor oil by alcoholysis with triethanolamine. The
oil and the oil-based polyol were characterized by infrared spectroscopy and through the
analytical determination of their functional groups, both techniques indicating that the
hydroxyl content increased significantly after the alcoholysis reaction. The modified oil
was subsequently used as the polyol component in the formulation of rigid polyurethane
foams. Wood flour was chosen to be incorporated as filler in these materials. Physical,
thermal and mechanical properties of the neat and reinforced foams were measured,
analyzed and compared to a reference commercial system. The chemical reaction
between wood flour and isocyanate strongly affected the composites response to
thermo-gravimetric tests. Compression modulus and yield strength decreased as wood
flour content increased. The effect of the foam density on the compression properties
was also investigated.