Siloxanes synthesized in situ by solgel process for fire control in wood of Araucaria angustifolia

Panels of Araucaria angustifolia were chemically modified with alkoxysilanes, hydrolyzed and condensed “in situ” by the sol–gel process. Alkoxysilanes selected were aminopropyl methyldiethoxysilane (A), aminopropyl triethoxysilane (B) and a mixture of both (C). Ethanol was used as solvent in 4/1 e...

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Detalles Bibliográficos
Autores principales: Giudice, Carlos Alberto, Alfieri, Paula, Canosa, Guadalupe
Formato: Artículo publishedVersion
Lenguaje:Inglés
Publicado: Elsevier 2017
Materias:
wood; impregnation; siloxane; solgel; chemical modification; flame retardant
Acceso en línea:http://hdl.handle.net/20.500.12272/2213
Aporte de:
RIA - Repositorio Institucional Abierto (UTN) de Universidad Tecnológica Nacional
id I68-R174-20.500.12272-2213
record_format dspace
institution Universidad Tecnológica Nacional
institution_str I-68
repository_str R-174
collection RIA - Repositorio Institucional Abierto (UTN)
language Inglés
topic wood; impregnation; siloxane; solgel; chemical modification; flame retardant
spellingShingle wood; impregnation; siloxane; solgel; chemical modification; flame retardant
Giudice, Carlos Alberto
Alfieri, Paula
Canosa, Guadalupe
Siloxanes synthesized in situ by solgel process for fire control in wood of Araucaria angustifolia
topic_facet wood; impregnation; siloxane; solgel; chemical modification; flame retardant
description Panels of Araucaria angustifolia were chemically modified with alkoxysilanes, hydrolyzed and condensed “in situ” by the sol–gel process. Alkoxysilanes selected were aminopropyl methyldiethoxysilane (A), aminopropyl triethoxysilane (B) and a mixture of both (C). Ethanol was used as solvent in 4/1 ethanol/ alkoxide molar ratio. The pH was adjusted to alkaline value for controlling the kinetic of hydrolysis– condensation reactions. Impregnation process was carried out at 45–50 1C in an autoclave, controlling the operating conditions for achieving different weight gains. Laboratory tests were carried out in Two-Foot Tunnel (flame spread index, panel consumption and smoke density) and in TGA detector (mass loss). The performance in laboratory tests can be explicated according the reactivity of the alkoxides. The results support the conclusion that the best fireproof efficiency was observed in woods treated with the alkoxide B, followed by those modified with the mixture C and the alkoxide A, in this order; the results also indicates that as weight gain increased the performance of impregnants against fire
format Artículo
publishedVersion
Artículo
author Giudice, Carlos Alberto
Alfieri, Paula
Canosa, Guadalupe
author_facet Giudice, Carlos Alberto
Alfieri, Paula
Canosa, Guadalupe
author_sort Giudice, Carlos Alberto
title Siloxanes synthesized in situ by solgel process for fire control in wood of Araucaria angustifolia
title_short Siloxanes synthesized in situ by solgel process for fire control in wood of Araucaria angustifolia
title_full Siloxanes synthesized in situ by solgel process for fire control in wood of Araucaria angustifolia
title_fullStr Siloxanes synthesized in situ by solgel process for fire control in wood of Araucaria angustifolia
title_full_unstemmed Siloxanes synthesized in situ by solgel process for fire control in wood of Araucaria angustifolia
title_sort siloxanes synthesized in situ by solgel process for fire control in wood of araucaria angustifolia
publisher Elsevier
publishDate 2017
url http://hdl.handle.net/20.500.12272/2213
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