nach oben

European Journal of Wood and Wood Products

Erschienen in:

01.01.2014 | Originals Originalarbeiten

Mechanical and physical properties of thermally modified Scots pine wood in high pressure reactor under saturated steam at 120, 150 and 180 °C

verfasst von: Lauri Rautkari, Juhani Honkanen, Callum A. S. Hill, Daniel Ridley-Ellis, Mark Hughes

Erschienen in: European Journal of Wood and Wood Products | Ausgabe 1/2014

Einloggen

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

search-config

KI-gestützte Suche

Aus

Abstract

Scots pine sapwood and heartwood were thermally modified under saturated steam at 120, 150 and 180 °C in a high pressure reactor. Mechanical properties such as dynamic and static modulus of elasticity (MOE), static modulus of rupture (MOR), Brinell hardness and impact toughness were evaluated. The static MOE for sapwood did not decrease substantially (approximately 1 %), not even with a high mass loss of more than 12 %, when the wood was modified at 180 °C. Static MOE of the wood increased approximately 14 %, when modified at 150 °C. Surprisingly, MOR increased by 15 %, when modified at 150 °C with mass loss of 2.3 %. Whereas impact strength and hardness decreased somewhat, when modified at 180 °C. Moreover, high anti-swelling efficiency values were obtained (60 % for sapwood and 52 % for heartwood) when modified at 180 °C.

Vorheriger Artikel Load-carrying capacity of timber-to-timber joints of fast-growing Argentinean Eucalyptus grandis with nails of small diameter laterally loaded in double shear: analysis according to the criterion adopted by European standards

Nächster Artikel Full-field moisture induced deformation in Norway spruce: intra-ring variation of transverse swelling

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

Bhuiyan MTR, Hirai N, Sobue N (2000) Changes of crystallinity in wood cellulose by heat treatment under dried and moist conditions. J Wood Sci 46:431–436CrossRef

Boonstra MJ, Van Acher J, Tjeerdsma BF, Kegel EV (2007) Strength properties of thermally modified softwoods and its relation to polymeric structural wood constituents. Ann For Sci 64:679–690CrossRef

Borrega M, Kärenlampi PP (2008) Effect of relative humidity on thermal degradation of Norway spruce (Picea abies) wood. J Wood Sci 54:323–328CrossRef

Borrega M, Kärenlampi PP (2010) Hygroscopicity of heat-treated Norway spruce (Picea abies) wood. Eur J Wood Prod 68:233–235CrossRef

Dagbro O, Torniainen P, Karlsson O, Morén T (2010) Colour responses from wood, thermally modified in superheated steam and pressurized steam atmospheres. Wood Mat Sci Eng 5:211–219CrossRef

Ding T, Lianbai G, Liu X (2011) Influence of steam pressure on chemical changes of heat-treated Mongolian pine wood. Bioresources 6:1880–1889

Dwianto W, Takana F, Inoue M, Norimoto M (1996) Crystallinity changes of wood by heat or steam treatment. Wood Res 83:47–49

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

EN 408 (2011) Timber structures. Structural timber and glued laminated timber. Determination of some physical and mechanical properties. CEN—European Committee for Standardization, Brussels

EN ISO 179-1 (2010) Plastics. Determination of Charpy impact properties. Part 1: non-instrumented impact test. CEN—European Committee for Standardization, Brussels

Haines DW, Leban JM, Herbé C (1996) Determination of Young’s modulus for spruce, fir and isotropic materials by resonance flexure method with comparisons to static flexure and other dynamic methods. Wood Sci Technol 30:253–263CrossRef

Hill CAS (2006) Wood modification—chemical, thermal and other processes. John Wiley and Sons Ltd., ChichesterCrossRef

Hill CAS, Ramsay J, Keating B, Laine K, Rautkari L, Hughes M, Constant B (2012) The water vapour sorption properties thermally modified and densified wood. J Mat Sci 47:3191–3197CrossRef

Korkut S, Budakçı M (2009) Effect of high-temperature treatment on the mechanical properties of Rowan (Sorbus aucuparia L.) wood. Drying Technol 27:1240–1247CrossRef

Korkut S, Akgül M, Dünbar T (2008) The effects of heat treatment on some technological properties of Scots pine (Pinus sylvestris L.) wood. Bioresour Technol 99:1861–1868PubMedCrossRef

Metsä-Kortelainen S, Viitanen H (2010) Effect of fungal exposure on the strength of thermally modified Norway spruce and Scots pine. Wood Mat Sci Eng 1(13):23

Metsä-Kortelainen S, Antikainen T, Viitaniemi P (2006) The water absorption of sapwood and heartwood of Scots pine and Norway spruce heat-treated at 170°C, 190°C, 200°C and 230°C. Holz Roh Werkst 64:192–197CrossRef

Navi P, Sandberg D (2012) Thermo-hydro-mechanical processing of wood engineering sciences. EPFL Press, Lausanne

Phuong LX, Shida S, Saito T (2007a) Effect of heat treatment on brittleness of Styrax tonkinensis wood. J Wood Sci 53:181–186CrossRef

Phuong LX, Takayama M, Shida S, Matsumoto Y, Aoyagi T (2007b) Determination of the accessible hydroxyl groups in heat-treated Styrax tonkinensis (Pierre) Craib ex Hartwich wood by hydrogen-deuterium exchange and 2H NMR spectroscopy. Holzforschung 61:488–491CrossRef

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

Rautkari L, Hänninen T, Johansson L-S, Hughes M (2012) A study by X-ray photoelectron spectroscopy (XPS) of the chemistry of the surface of Scots pine (Pinus sylvestris L.) modified by friction. Holzforschung 66:93–96CrossRef

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

Rautkari L, Hill CAS, Curling S, Jalaludin Z, Ormondroyd G (2013b) What is the role of the accessibility of wood hydroxyl groups in controlling moisture content? J Mat Sci 48:6352–6356CrossRef

Rowell RM, Ellis WD (1978) Determination of dimensional stabilization of wood using the water-soak method. Wood Fiber Sci 10:104–111

Seborg RM, Tarkow H, Stamm A (1953) Effect of heat upon the dimensional stabilization of wood. For Prod J 3:59–67

Sivonen H, Maunu SL, Sundholm F, Jämsä S, Viitaniemi P (2002) Magnetic resonance studies of thermally modified wood. Holzforschung 56:648–654CrossRef

Stamm AJ (1935) Shrinking and swelling of wood. Ind Eng Chem 21:401–406CrossRef

Sundqvist B, Karsson O, Westermark U (2006) Determination of formic-acid concentrations formed during hydrothermal treatment of birch wood and its relation to colour, strength and hardness. Wood Sci Technol 40:549–561CrossRef

Tjeerdsma BF, Boonstra M, Pizzi A. Tekely P, Militz H (1998) Characterisation of thermally modified wood: molecular reasons for wood performance improvement. Holz Roh Werkst 56:149–153

Torniainen P, Dagbro O, Morén T (2011) Thermal modification of birch using saturated and superheated steam. In: Proceedings of the 7th meeting of the Nordic-Baltic Network in Wood Material Science & Engineering (WSE), Oslo, Norway

Vainio-Kaila T, Rautkari L, Nordström K, Närhi M, Natri O, Kairi M (2013) Effect of extractives and thermal modification on antibacterial properties of Scots pine and Norway spruce. Int Wood Prod J. doi:10.1179/2042645313Y.0000000038

Welzbacher CR, Brischke C, Rapp OR (2007) Influence of treatment temperature and duration on selected biological, mechanical, physical and optical properties of thermally modified timber. Wood Mat Sci Eng 2:66–76CrossRef

Willems W (2009) A Novel economic large-scale production technology for high-quality thermally modified wood. In: Proceedings of the 4th European Conference on Wood Modification, Stockholm, Sweden

Titel: Mechanical and physical properties of thermally modified Scots pine wood in high pressure reactor under saturated steam at 120, 150 and 180 °C
verfasst von: Lauri Rautkari
Juhani Honkanen
Callum A. S. Hill
Daniel Ridley-Ellis
Mark Hughes
Publikationsdatum: 01.01.2014
Verlag: Springer Berlin Heidelberg
Erschienen in: European Journal of Wood and Wood Products / Ausgabe 1/2014
Print ISSN: 0018-3768
Elektronische ISSN: 1436-736X
DOI: https://doi.org/10.1007/s00107-013-0749-5

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 1/2014

Roundwood pre-grading with longitudinal acoustic waves for production of structural boards

Some physical and mechanical properties of thermally modified juvenile and mature black pine wood

Sorption and thermodynamic properties of Terminalia superba Engl. & Diels and Triplochiton scleroxylon K. Schum. through the 15, 35 and 50 °C sorption isotherms

Enhancing the applicability of near infrared spectroscopy for estimating specific gravity of green timber from Eucalyptus tereticornis by developing composite calibration using both radial and tangential face of wood

Temperature charts of Hevea brasiliensis during log steaming and its effect on the board cracks

Wood natural durability testing under laboratory conditions: results from a round-robin test