Síntesis y caracterización de nanosílices funcionalizadas injertadas con 3-aminopropil trietoxisilano para ser utilizadas en adhesivos de poliuretano
Fecha
2007-03
Autores
Jose-Roberto, Vega-Baudrit
Sibaja-Ballestero, María
Martín-Martínez, José Miguel
Vázquez, Patricia
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Editor
Universidad del País Vasco (España)
Resumen
En este trabajo se presentan los resultados obtenidos al modificar superficialmente una sílice pirogénica hidrófila comercial, con una superficie específica de 200 m2/g, a la que se le injertó 3-aminopropiltrietoxisilano. La nanosílice modificada se añadió a adhesivos de poliuretano termoplástico en metiletilcetona. El material obtenido se caracterizó mediante sus propiedades mecánicas, térmicas, reológicas y adhesivas. Los resultados obtenidos se compararon con los de adhesivos de poliuretano sin sílice y con sílice sin modificar, preparados bajo las mismas condiciones experimentales.
This work presents the results obtained by superficially modifying a commercial hydrophilic fumed silica, with a specific surface area of 200 m2/g, to which 3-aminopropyltriethoxysilane was grafted. The modified nanosilica was added to thermoplastic polyurethane adhesives in methyl ethyl ketone. The material obtained was characterized by its mechanical, thermal, rheological and adhesive properties. The results obtained were compared with those of polyurethane adhesives without silica and with unmodified silica, prepared under the same experimental conditions.
This work presents the results obtained by superficially modifying a commercial hydrophilic fumed silica, with a specific surface area of 200 m2/g, to which 3-aminopropyltriethoxysilane was grafted. The modified nanosilica was added to thermoplastic polyurethane adhesives in methyl ethyl ketone. The material obtained was characterized by its mechanical, thermal, rheological and adhesive properties. The results obtained were compared with those of polyurethane adhesives without silica and with unmodified silica, prepared under the same experimental conditions.
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Palabras clave
NANOSÍLICE, ADHESIVO, ADHESIÓN, 3-AMINOPROPILTRIETOXISILANO, POLIURETANO, INJERTO, NANOSILIC, ADHESIVE, 3-AMINOPROPYLTRIETHOXYSILANE