Effects of veneer drying at high temperature and chemical treatments on equilibrium moisture content of plywood

Moisture content (MC) is one of the most important factors that can affect many physical and mechanical properties of wood and veneers. MC strongly affects the final strength and durability of joints, development of surface checks in the wood and dimensional stability of the bonded assembly. In this...

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Autor principal:	Aydin,Ismail
Lenguaje:	English
Publicado:	Universidad del Bío-Bío 2014
Materias:	Wood plywood high temperature drying impregnation equilibrium moisture content
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2014000400007
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spelling	oai:scielo:S0718-221X20140004000072014-10-10Effects of veneer drying at high temperature and chemical treatments on equilibrium moisture content of plywoodAydin,Ismail Wood plywood high temperature drying impregnation equilibrium moisture content Moisture content (MC) is one of the most important factors that can affect many physical and mechanical properties of wood and veneers. MC strongly affects the final strength and durability of joints, development of surface checks in the wood and dimensional stability of the bonded assembly. In this study, plywood panels made from Alnus glutinosa (alder), Fagus orientalis (beech) and Picea orientalis (spruce) wood veneers were treated with ammonium acetate, borax and boric acid by using dipping method to test for their equilibrium moisture content (EMC). Borax and boric acid solutions were used for fire-retardancy, and ammonium acetate for reducing formaldehyde emission. Two different veneer drying temperatures (20ºC and 180ºC) were used to reveal the effects of veneer drying at high temperature on the hygroscopicity of plywood panels. EMC values of alder, beech and spruce panels decreased significantly with veneer drying at high temperature. Picea orientalis (spruce) plywood panels had the highest EMC values and followed by Alnus glutinosa (alder) and Fagus orientalis (beech) panels. EMC values of plywood panels increased significantly for both drying temperatures after ammonium acetate, borax and boric acid treatments.info:eu-repo/semantics/openAccessUniversidad del Bío-BíoMaderas. Ciencia y tecnología v.16 n.4 20142014-10-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2014000400007en
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Wood plywood high temperature drying impregnation equilibrium moisture content
spellingShingle	Wood plywood high temperature drying impregnation equilibrium moisture content Aydin,Ismail Effects of veneer drying at high temperature and chemical treatments on equilibrium moisture content of plywood
description	Moisture content (MC) is one of the most important factors that can affect many physical and mechanical properties of wood and veneers. MC strongly affects the final strength and durability of joints, development of surface checks in the wood and dimensional stability of the bonded assembly. In this study, plywood panels made from Alnus glutinosa (alder), Fagus orientalis (beech) and Picea orientalis (spruce) wood veneers were treated with ammonium acetate, borax and boric acid by using dipping method to test for their equilibrium moisture content (EMC). Borax and boric acid solutions were used for fire-retardancy, and ammonium acetate for reducing formaldehyde emission. Two different veneer drying temperatures (20ºC and 180ºC) were used to reveal the effects of veneer drying at high temperature on the hygroscopicity of plywood panels. EMC values of alder, beech and spruce panels decreased significantly with veneer drying at high temperature. Picea orientalis (spruce) plywood panels had the highest EMC values and followed by Alnus glutinosa (alder) and Fagus orientalis (beech) panels. EMC values of plywood panels increased significantly for both drying temperatures after ammonium acetate, borax and boric acid treatments.
author	Aydin,Ismail
author_facet	Aydin,Ismail
author_sort	Aydin,Ismail
title	Effects of veneer drying at high temperature and chemical treatments on equilibrium moisture content of plywood
title_short	Effects of veneer drying at high temperature and chemical treatments on equilibrium moisture content of plywood
title_full	Effects of veneer drying at high temperature and chemical treatments on equilibrium moisture content of plywood
title_fullStr	Effects of veneer drying at high temperature and chemical treatments on equilibrium moisture content of plywood
title_full_unstemmed	Effects of veneer drying at high temperature and chemical treatments on equilibrium moisture content of plywood
title_sort	effects of veneer drying at high temperature and chemical treatments on equilibrium moisture content of plywood
publisher	Universidad del Bío-Bío
publishDate	2014
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2014000400007
work_keys_str_mv	AT aydinismail effectsofveneerdryingathightemperatureandchemicaltreatmentsonequilibriummoisturecontentofplywood
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Effects of veneer drying at high temperature and chemical treatments on equilibrium moisture content of plywood

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