Obtención de espumas flexibles de poliuretano apartir de aceites de palma y castor modificados
Abstract
Muy pocos estudios se han realizado en la obtención de espumas flexibles de poliuretano a base de aceite de palma y castor, por la gran rigidez y dureza que presentan estos productos; para mejorar estas propiedades, se modificaron mediante glicerólisis y esterificación. Se optimizaron utilizando la metodología Taguchi, las siguientes variables: relación de los reactivos, temperatura y tiempo, y en la obtención de las espumas: poliol modificado, cantidad de catalizador organométalico, amínico y cantidad de agua. Las espumas obtenidas presentan las características requeridas de confort y durabilidad, densidad, dureza, resistencia tensil, porcentaje de elongación, porcentaje de resiliencia, pruebas de espectroscopia infrarroja y resistencia a solvente y a la hidrólisisDownloads
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