info:eu-repo/semantics/article
Microfoams based on castor oil polyurethanes and vegetable fibers
Fecha
2007-09Registro en:
Aranguren, Mirta Ines; Rácz, Ilona; Marcovich, Norma Esther; Microfoams based on castor oil polyurethanes and vegetable fibers; John Wiley & Sons Inc; Journal of Applied Polymer Science; 105; 5; 9-2007; 2791-2800
0021-8995
CONICET Digital
CONICET
Autor
Aranguren, Mirta Ines
Rácz, Ilona
Marcovich, Norma Esther
Resumen
This work was focused on the production and characterization of microcellular polyurethane (PU) composites reinforced with pine wood-fibers or with hemp, which can be applied to the manufacture of car interior panels, or acoustic insulation panels for the construction industry. The polymers selected for the study were crosslinked PUs, synthesized from a castor oil-based polyol, with the formulations adjusted to obtain different foaming levels. Microfoamed composites with preferential orientation were prepared from long hemp fibers. Also, samples with random arrangement of short hemp and wood fibers were obtained. The morphology of the composites was analyzed by scanning electron microscopy. The mechanical performance of the reinforced foams was studied through three point bending and dynamic mechanical tests.