Effect of Press Cycle Time on Application Behavior of Board Made from Chemically Modified Particles

Although acetylation is effective in achieving high hydrophobicity, dimensional stability, and decay resistance of particleboards, springback and mechanical strength loss in modified boards should be improved to maintain high performance of this method. It is questioned if acetylation, due to the hy...

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Auteur principal:	Fatemeh Bavaneghi
Format:	article
Langue:	EN
Publié:	University of Zagreb, Faculty of Forestry and Wood Technology 2016
Sujets:	press time acetylation particleboard thickness swelling mechanical strength decay resistance Forestry SD1-669.5
Accès en ligne:	https://doaj.org/article/b3d4e268a72e4a1e94251edf02ae99d0
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spelling	oai:doaj.org-article:b3d4e268a72e4a1e94251edf02ae99d02021-12-02T03:17:24ZEffect of Press Cycle Time on Application Behavior of Board Made from Chemically Modified Particles10.5552/drind.2016.14430012-67721847-1153https://doaj.org/article/b3d4e268a72e4a1e94251edf02ae99d02016-03-01T00:00:00Zhttp://hrcak.srce.hr/file/227930https://doaj.org/toc/0012-6772https://doaj.org/toc/1847-1153Although acetylation is effective in achieving high hydrophobicity, dimensional stability, and decay resistance of particleboards, springback and mechanical strength loss in modified boards should be improved to maintain high performance of this method. It is questioned if acetylation, due to the hydrophobic nature of modified flakes, could interfere with the polymerization reaction of the phenolic resin. In this research, the effect of different press durations on bioresistance, physical and mechanical behavior of acetylated particleboards at various weight percent gains (WPG) was investigated. Results showed that acetylated boards possessed very low moisture content, water absorption, thickness swelling and biological degradation values compared to control boards. Increasing press time intensified reduction in these boards, with the exception in untreated boards. Also acetylation resulted in high correlation between the springback and the strength losses of the boards due to weak bonding between the wood flakes. Prolongation of the press time in the acetylated boards caused significant reduction in springback and mechanical loss. Regarding the outdoor use with biological degradation for modified boards, an increase in the press time for improving these properties might be recommended.Fatemeh BavaneghiUniversity of Zagreb, Faculty of Forestry and Wood Technologyarticlepress timeacetylationparticleboardthickness swellingmechanical strengthdecay resistanceForestrySD1-669.5ENDrvna Industrija, Vol 67, Iss 1, Pp 25-31 (2016)
institution	DOAJ
collection	DOAJ
language	EN
topic	press time acetylation particleboard thickness swelling mechanical strength decay resistance Forestry SD1-669.5
spellingShingle	press time acetylation particleboard thickness swelling mechanical strength decay resistance Forestry SD1-669.5 Fatemeh Bavaneghi Effect of Press Cycle Time on Application Behavior of Board Made from Chemically Modified Particles
description	Although acetylation is effective in achieving high hydrophobicity, dimensional stability, and decay resistance of particleboards, springback and mechanical strength loss in modified boards should be improved to maintain high performance of this method. It is questioned if acetylation, due to the hydrophobic nature of modified flakes, could interfere with the polymerization reaction of the phenolic resin. In this research, the effect of different press durations on bioresistance, physical and mechanical behavior of acetylated particleboards at various weight percent gains (WPG) was investigated. Results showed that acetylated boards possessed very low moisture content, water absorption, thickness swelling and biological degradation values compared to control boards. Increasing press time intensified reduction in these boards, with the exception in untreated boards. Also acetylation resulted in high correlation between the springback and the strength losses of the boards due to weak bonding between the wood flakes. Prolongation of the press time in the acetylated boards caused significant reduction in springback and mechanical loss. Regarding the outdoor use with biological degradation for modified boards, an increase in the press time for improving these properties might be recommended.
format	article
author	Fatemeh Bavaneghi
author_facet	Fatemeh Bavaneghi
author_sort	Fatemeh Bavaneghi
title	Effect of Press Cycle Time on Application Behavior of Board Made from Chemically Modified Particles
title_short	Effect of Press Cycle Time on Application Behavior of Board Made from Chemically Modified Particles
title_full	Effect of Press Cycle Time on Application Behavior of Board Made from Chemically Modified Particles
title_fullStr	Effect of Press Cycle Time on Application Behavior of Board Made from Chemically Modified Particles
title_full_unstemmed	Effect of Press Cycle Time on Application Behavior of Board Made from Chemically Modified Particles
title_sort	effect of press cycle time on application behavior of board made from chemically modified particles
publisher	University of Zagreb, Faculty of Forestry and Wood Technology
publishDate	2016
url	https://doaj.org/article/b3d4e268a72e4a1e94251edf02ae99d0
work_keys_str_mv	AT fatemehbavaneghi effectofpresscycletimeonapplicationbehaviorofboardmadefromchemicallymodifiedparticles
_version_	1718401878175252480

Effect of Press Cycle Time on Application Behavior of Board Made from Chemically Modified Particles

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