Densification of Paullownia wood by using of hot-press

For this study 10 logs of Paullowina.furtunie from Shastkalateh forest of Gorgan in Iran were selected randomly. After that, 45 clear flat swan specimens prepared and dried to 5% moisture. Density of each log and thickness of specimens were measured. Three levels of compression percent (16%, 33% and...

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Autores principales:	Hamid reza Adalat, Taghi Tabarsa, Marzyeh Raeisi
Formato:	article
Lenguaje:	FA
Publicado:	Regional Information Center for Science and Technology (RICeST) 2008
Materias:	Densification Paullownia Thermal treatment Mechanical strength Spring back Compression set Forestry SD1-669.5
Acceso en línea:	https://doaj.org/article/adc96c891f5942d3b68fc6cd206ffec0
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id	oai:doaj.org-article:adc96c891f5942d3b68fc6cd206ffec0
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spelling	oai:doaj.org-article:adc96c891f5942d3b68fc6cd206ffec02021-12-02T04:35:15ZDensification of Paullownia wood by using of hot-press1735-09132383-112X10.22092/ijwpr.2008.117411https://doaj.org/article/adc96c891f5942d3b68fc6cd206ffec02008-09-01T00:00:00Zhttp://ijwpr.areeo.ac.ir/article_117411_3850dd544e40f88bf64a54524e0e400b.pdfhttps://doaj.org/toc/1735-0913https://doaj.org/toc/2383-112XFor this study 10 logs of Paullowina.furtunie from Shastkalateh forest of Gorgan in Iran were selected randomly. After that, 45 clear flat swan specimens prepared and dried to 5% moisture. Density of each log and thickness of specimens were measured. Three levels of compression percent (16%, 33% and 50%) and temperature (130°C, 145°C and 160°C) were the variables. The physical properties of specimens such as spring back, compression set and thickness swelling were calculated. Also, MOE, MOR and impact resistance of specimens were evaluated. In order to have accurate examination, microscopic images were taken. Results show that, with increasing in compression percent, the amounts of spring back and thickness swelling enhance. Densification with 16% compression, yields deformation in elastic region while 33% and 50% compression, causes more compression set. The more compression percent, the more mechanical strengths and the highest strength attained in 50% compression. The effect of temperature was insignificant mostly. Finally, the proper treatment for Paullownia densification, was 130°C and 50% compression. Microscopic images asserted the above results and illustrated that, the enhancing of densification above 50% compression is possible.Hamid reza AdalatTaghi TabarsaMarzyeh RaeisiRegional Information Center for Science and Technology (RICeST)articleDensificationPaullowniaThermal treatmentMechanical strengthSpring backCompression setForestrySD1-669.5FAتحقیقات علوم چوب و کاغذ ایران, Vol 23, Iss 2, Pp 136-148 (2008)
institution	DOAJ
collection	DOAJ
language	FA
topic	Densification Paullownia Thermal treatment Mechanical strength Spring back Compression set Forestry SD1-669.5
spellingShingle	Densification Paullownia Thermal treatment Mechanical strength Spring back Compression set Forestry SD1-669.5 Hamid reza Adalat Taghi Tabarsa Marzyeh Raeisi Densification of Paullownia wood by using of hot-press
description	For this study 10 logs of Paullowina.furtunie from Shastkalateh forest of Gorgan in Iran were selected randomly. After that, 45 clear flat swan specimens prepared and dried to 5% moisture. Density of each log and thickness of specimens were measured. Three levels of compression percent (16%, 33% and 50%) and temperature (130°C, 145°C and 160°C) were the variables. The physical properties of specimens such as spring back, compression set and thickness swelling were calculated. Also, MOE, MOR and impact resistance of specimens were evaluated. In order to have accurate examination, microscopic images were taken. Results show that, with increasing in compression percent, the amounts of spring back and thickness swelling enhance. Densification with 16% compression, yields deformation in elastic region while 33% and 50% compression, causes more compression set. The more compression percent, the more mechanical strengths and the highest strength attained in 50% compression. The effect of temperature was insignificant mostly. Finally, the proper treatment for Paullownia densification, was 130°C and 50% compression. Microscopic images asserted the above results and illustrated that, the enhancing of densification above 50% compression is possible.
format	article
author	Hamid reza Adalat Taghi Tabarsa Marzyeh Raeisi
author_facet	Hamid reza Adalat Taghi Tabarsa Marzyeh Raeisi
author_sort	Hamid reza Adalat
title	Densification of Paullownia wood by using of hot-press
title_short	Densification of Paullownia wood by using of hot-press
title_full	Densification of Paullownia wood by using of hot-press
title_fullStr	Densification of Paullownia wood by using of hot-press
title_full_unstemmed	Densification of Paullownia wood by using of hot-press
title_sort	densification of paullownia wood by using of hot-press
publisher	Regional Information Center for Science and Technology (RICeST)
publishDate	2008
url	https://doaj.org/article/adc96c891f5942d3b68fc6cd206ffec0
work_keys_str_mv	AT hamidrezaadalat densificationofpaullowniawoodbyusingofhotpress AT taghitabarsa densificationofpaullowniawoodbyusingofhotpress AT marzyehraeisi densificationofpaullowniawoodbyusingofhotpress
_version_	1718401143983308800

Densification of Paullownia wood by using of hot-press

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