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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Regional Information Center for Science and Technology (RICeST)
2008
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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) |
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Densification Paullownia Thermal treatment Mechanical strength Spring back Compression set Forestry SD1-669.5 |
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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_ |
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