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
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Lenguaje:FA
Publicado: Regional Information Center for Science and Technology (RICeST) 2008
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Acceso en línea:https://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
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