nach oben

European Journal of Wood and Wood Products

Erschienen in:

12.05.2016 | Original

Influence of temperature of thermal treatment on surface densification of spruce

verfasst von: Mirko Kariz, Manja Kitek Kuzman, Milan Sernek, Mark Hughes, Lauri Rautkari, Frederick A. Kamke, Andreja Kutnar

Erschienen in: European Journal of Wood and Wood Products | Ausgabe 1/2017

Einloggen

Aktivieren Sie unsere intelligente Suche, um passende Fachinhalte oder Patente zu finden.

search-config

KI-gestützte Suche

Aus

Abstract

Spruce (Picea abies L. Karst) wood lamellae, thermally treated at 170, 190, 210 and 230 °C were surface densified by compression at a temperature of 150 °C to three degrees of compression. Immediate springback, set recovery, mechanical properties in 3-point flexure, Brinell hardness and density profiles measurements were used to determine the effect of thermal treatment on the properties of surface densified wood. The highest immediate springback occurred in wood specimens thermally treated at the highest temperature (230 °C) and decreased with decreasing thermal treatment temperature. The untreated samples had the highest set recovery, which decreased with the temperature of thermal treatment. The surface densification increased hardness and bending strength. The highest increase was in the case of untreated wood and decreased with the temperature of thermal treatment. The modulus of elasticity (MOE) and modulus of rupture (MOR) of surface densified wood decreased with increasing thermal treatment temperature. The trend was similar for specimens which were thermally treated but not surface densified. Surface densification increased the density of the specimens in the first few millimetres below the surface. The highest density was achieved in untreated specimens and the lowest in specimens thermally treated at the highest temperature.

Vorheriger Artikel Resistance of rubberwood (Hevea brasiliensis) treated with chitosan or silane against surface molds

Nächster Artikel Enhanced water resistance of extruded wood–polypropylene composites based on alternative wood sources

Sie haben noch keine Lizenz? Dann Informieren Sie sich jetzt über unsere Produkte:

Springer Professional "Wirtschaft+Technik"

Online-Abonnement

Mit Springer Professional "Wirtschaft+Technik" erhalten Sie Zugriff auf:

über 102.000 Bücher
über 537 Zeitschriften

aus folgenden Fachgebieten:

Automobil + Motoren
Bauwesen + Immobilien
Business IT + Informatik
Elektrotechnik + Elektronik
Energie + Nachhaltigkeit
Finance + Banking
Management + Führung
Marketing + Vertrieb
Maschinenbau + Werkstoffe
Versicherung + Risiko

Jetzt Wissensvorsprung sichern!

Jetzt informieren

Springer Professional "Wirtschaft"

Online-Abonnement

Mit Springer Professional "Wirtschaft" erhalten Sie Zugriff auf:

über 67.000 Bücher
über 340 Zeitschriften

aus folgenden Fachgebieten:

Bauwesen + Immobilien
Business IT + Informatik
Finance + Banking
Management + Führung
Marketing + Vertrieb
Versicherung + Risiko

Jetzt Wissensvorsprung sichern!

Jetzt informieren

Springer Professional "Technik"

Online-Abonnement

Mit Springer Professional "Technik" erhalten Sie Zugriff auf:

über 67.000 Bücher
über 390 Zeitschriften

aus folgenden Fachgebieten:

Automobil + Motoren
Bauwesen + Immobilien
Business IT + Informatik
Elektrotechnik + Elektronik
Energie + Nachhaltigkeit
Maschinenbau + Werkstoffe

Jetzt Wissensvorsprung sichern!

Jetzt informieren

Arruda LM, Del Menezzi CHS (2013) Effect of thermomechanical treatment on physical properties of wood veneers. Int Wood Prod J 4:217–224CrossRef

Bekhta P, Proszyk S, Krystofiak T, Sedliacik J, Novak I, Mamonova M (2015) Effect of short-term thermomechanical densification on the structure and properties of wood veneers. Wood Mater Sci Eng. doi:10.1080/17480272.2015.1009488

Belt T, Rautkari L, Laine K, Hill CAS (2013) Cupping behavior of surface densified Scots pine wood: the effect of process parameters and correlation with density profile characteristics. J Mater Sci 48:6426–6430CrossRef

EN 1534 (2000) Wood and parquet flooring—determination of resistance to indentation (Brinell)—test method. CEN—European Committee for Standardization, Brussels

EN 310 (1996) Wood-based panels—determination of modulus of elasticity in bending and of bending strength. CEN—European Committee for Standardization, Brussels

Esteves BM, Domingos IJ, Pereira HM (2008) Pine wood modification by heat treatment in air. BioRes 3:142–154

Fang CH, Mariotti N, Cloutier A, Koubaa A, Blanchet P (2011) Densification of wood veneers by compression combined with heat and steam. Eur J Wood Prod 70:155–163CrossRef

Gong M, Lamason C, Li L (2010) Interactive effect of surface densification and post-heat-treatment on aspen wood. J Mater Process Tech 210:293–296CrossRef

Heger F, Groux M, Girardet F, Welzbacher C, Rapp AO, Navi P (2004) Mechanical and durability performance of THM-densified wood. Final workshop COST action E22, Lisbon, Portugal

Hill CAS (2006) Wood modification. Chemical, thermal and other processes. Wiley, Chichester

Inoue M, Sekino N, Morooka T, Rowell RM, Norimoto M (2008) Fixation of compressive deformation in wood by pre-steaming. J Trop For Sci 20:273–281

Kamke FA, Sizemore H (2008) Viscoelastic thermal compression of wood. US Patent No. US7404422B2

Kutnar A, Kamke FA (2012) Influence of temperature and steam environment on set recovery of compressive deformation of wood. Wood Sci Technol 46:953–964CrossRef

Kutnar A, Kamke FA, Sernek M (2008) The mechanical properties of densified VTC wood relevant for structural composites. Holz Roh Werkst 66:439–446CrossRef

Kutnar A, Kamke FA, Sernek M (2009) Density profile and morphology of viscoelastic thermal compressed wood. Wood Sci Technol 43:57–68CrossRef

Laine K, Rautkari L, Hughes M, Kutnar A (2013) Reducing the set-recovery of surface densified solid Scots pine wood by hydrothermal post-treatment. Eur J Wood Prod 71:17–23CrossRef

Mayes D, Oksanen O (2003) Thermo wood handbook. Finnish Thermowood Association, Helsinki

Militz H (2002) Thermal treatment of wood: European processes and their background. The International Research Group on Wood Preservation. Document No. IRG/WP 02-40241

Morsing N (2000) Densification of wood- The influence of hygothermal treatment on compression of beech perpendicular to the grain. Department of structural engineering and materials technical university of Denmark, Series R, p 138

Navi P, Girardet F (2000) Effects of thermo-hydro mechanical treatment on the structure and properties of wood. Holzforschung 54:287–293CrossRef

Navi P, Heger F (2004) Combined densification and thermo-hydro-mechanical processing of wood. MRS Bull 29:332–336CrossRef

Rautkari L, Properzi M, Pichelin F, Hughes M (2008) An innovative thermo densification method for wooden surfaces. In: Proceedings of 10th world conference on timber engineering

Rautkari L, Properzi M, Pichelin F, Hughes M (2009) Surface modification of wood using friction. Wood Sci Technol 43:291–299CrossRef

Rautkari L, Properzi M, Pichelin F, Hughes M (2010) Properties and set-recovery of surface densified Norway spruce and European beech. Wood Sci Technol 44:679–691CrossRef

Rautkari L, Laine K, Laflin N, Hughes M (2011a) Surface modification of Scots pine: the effect of process parameters on the through thickness density profile. J Mater Sci 46:4780–4786CrossRef

Rautkari L, Kamke FA, Hughes M (2011b) Density profile relation to hardness of viscoelastic thermal compressed (VTC) wood composite. Wood Sci Technol 45:693–705CrossRef

Rautkari L, Laine K, Kutnar A, Medved S, Hughes M (2013) Hardness and density profile of surface densified and thermally modified Scots pine in relation to degree of densification. J Mater Sci 48:2370–2375CrossRef

Rep G, Pohleven F, Bučar B (2004) Characteristics of thermally modified wood in vacuum. Report of International Research Group on Wood Preservation. IRG/WP 04-40287, p 9

Salmen L (1990) On the interaction between moisture and wood fibre materials. In: Materials Interactions Relevant to the Pulp, Paper, and Wood Industries, Passaretti JD, Caulfield D, Roy R, Setterholm V (eds.) Mater Res Soc Symp Proc, Pittsburgh, USA 197:193–201

Sandberg D, Haller P, Navi P (2013) Thermo-hydro and thermo-hydro-mechanical wood processing: an opportunity for future environmentally friendly wood products. Wood Mat Sci Eng 8:64–88CrossRef

Tjeerdsma BF, Militz H (2005) Chemical changes in hydrothermal treated wood: FTIR analysis of combined hydrothermal and dry heat-treated wood. Holz Roh- Werkst 63:102–111CrossRef

Tjeerdsma BF, Boonstra M, Pizzi A, Tekely P, Militz H (1998a) Characterisation of thermal modified wood: molecular reasons for wood performance improvement. CP-MAS 13C NMR characterisation of thermal modified wood. Holz Roh- Werkstoff. 56:149–153CrossRef

Tjeerdsma BF, Boonstra M, Militz H (1998b) Thermal modification of nondurable wood species. Part 2. Improved wood properties of thermally treated wood. International Research Group on Wood Preservation, IRG/WP 98–40124, p 12

Welzbacher CR, Wehsener J, Rapp AO, Haller P (2008) Thermo-mechanical densification combined with thermal modification of Norway spruce (Picea abies Karst) in industrial scale—dimensional stability and durability aspects. Holz Roh Werkst 66:39–49CrossRef

Wolcott MP, Shutler EL (2003) Temperature and moisture influence on compression-recovery behavior of wood. Wood Fiber Sci 35:540–551

Titel: Influence of temperature of thermal treatment on surface densification of spruce
verfasst von: Mirko Kariz
Manja Kitek Kuzman
Milan Sernek
Mark Hughes
Lauri Rautkari
Frederick A. Kamke
Andreja Kutnar
Publikationsdatum: 12.05.2016
Verlag: Springer Berlin Heidelberg
Erschienen in: European Journal of Wood and Wood Products / Ausgabe 1/2017
Print ISSN: 0018-3768
Elektronische ISSN: 1436-736X
DOI: https://doi.org/10.1007/s00107-016-1052-z

Springer Professional

Abstract

Bitte loggen Sie sich ein, um Zugang zu Ihrer Lizenz zu erhalten.

Sie haben noch keine Lizenz? Dann Informieren Sie sich jetzt über unsere Produkte:

Springer Professional "Wirtschaft+Technik"

Springer Professional "Wirtschaft"

Springer Professional "Technik"

Weitere Artikel der Ausgabe 1/2017

Influence of face-to-core layer ratio and core layer resin content on the properties of density-decreased particleboards

Editorial

Utilization of bark flours as additive in plywood manufacturing

Determination of optimal machining parameters of massive wooden edge glued panels which is made of Scots pine (Pinus sylvestris L.) using Taguchi design method

Comparing two internal check measurement methods for wood drying quality assessment

Resistance of rubberwood (Hevea brasiliensis) treated with chitosan or silane against surface molds