Properties of Liquid and Polycondensed UF Resin Modified with pMDI

The aim of this study was to determine the properties of liquid and cured UF (urea-formaldehyde) resin modified with pMDI (polymeric 4, 4′-methylenediphenyl isocyanate). Analyses showed that when introduced to liquid UF resin already at 10 %, its reactivity increases, which is reflected in a shorten...

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Autores principales:	Dorota Dziurka, Radosław Mirski1
Formato:	article
Lenguaje:	EN
Publicado:	University of Zagreb, Faculty of Forestry and Wood Technology 2014
Materias:	UF pMDI hybrid resin FTIR hydrophobicity Forestry SD1-669.5
Acceso en línea:	https://doaj.org/article/9ca41369cd4f432da6d3c38450fcc91e
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spelling	oai:doaj.org-article:9ca41369cd4f432da6d3c38450fcc91e2021-12-02T02:46:37ZProperties of Liquid and Polycondensed UF Resin Modified with pMDI10.5552/drind.2014.13210012-67721847-1153https://doaj.org/article/9ca41369cd4f432da6d3c38450fcc91e2014-06-01T00:00:00Zhttp://hrcak.srce.hr/index.php?show=clanak&id_clanak_jezik=181946https://doaj.org/toc/0012-6772https://doaj.org/toc/1847-1153The aim of this study was to determine the properties of liquid and cured UF (urea-formaldehyde) resin modified with pMDI (polymeric 4, 4′-methylenediphenyl isocyanate). Analyses showed that when introduced to liquid UF resin already at 10 %, its reactivity increases, which is reflected in a shortening of gel time and reduction of activation energy of the polycondensation process. In turn, analyses performed on polycondensed resin showed that, thanks to modification with pMDI, its hydrophobicity is considerably improved, as manifested in a reduction of absorbability and swelling in thickness of cured resin.Dorota DziurkaRadosław Mirski1University of Zagreb, Faculty of Forestry and Wood TechnologyarticleUFpMDIhybrid resinFTIRhydrophobicityForestrySD1-669.5ENDrvna Industrija, Vol 65, Iss 2, Pp 115-119 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	UF pMDI hybrid resin FTIR hydrophobicity Forestry SD1-669.5
spellingShingle	UF pMDI hybrid resin FTIR hydrophobicity Forestry SD1-669.5 Dorota Dziurka Radosław Mirski1 Properties of Liquid and Polycondensed UF Resin Modified with pMDI
description	The aim of this study was to determine the properties of liquid and cured UF (urea-formaldehyde) resin modified with pMDI (polymeric 4, 4′-methylenediphenyl isocyanate). Analyses showed that when introduced to liquid UF resin already at 10 %, its reactivity increases, which is reflected in a shortening of gel time and reduction of activation energy of the polycondensation process. In turn, analyses performed on polycondensed resin showed that, thanks to modification with pMDI, its hydrophobicity is considerably improved, as manifested in a reduction of absorbability and swelling in thickness of cured resin.
format	article
author	Dorota Dziurka Radosław Mirski1
author_facet	Dorota Dziurka Radosław Mirski1
author_sort	Dorota Dziurka
title	Properties of Liquid and Polycondensed UF Resin Modified with pMDI
title_short	Properties of Liquid and Polycondensed UF Resin Modified with pMDI
title_full	Properties of Liquid and Polycondensed UF Resin Modified with pMDI
title_fullStr	Properties of Liquid and Polycondensed UF Resin Modified with pMDI
title_full_unstemmed	Properties of Liquid and Polycondensed UF Resin Modified with pMDI
title_sort	properties of liquid and polycondensed uf resin modified with pmdi
publisher	University of Zagreb, Faculty of Forestry and Wood Technology
publishDate	2014
url	https://doaj.org/article/9ca41369cd4f432da6d3c38450fcc91e
work_keys_str_mv	AT dorotadziurka propertiesofliquidandpolycondensedufresinmodifiedwithpmdi AT radosławmirski1 propertiesofliquidandpolycondensedufresinmodifiedwithpmdi
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Properties of Liquid and Polycondensed UF Resin Modified with pMDI

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