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The effect of steaming on the color change of false heartwood beech
Názov The effect of steaming on the color change of false heartwood beech Aut.údaje Ladislav Dzurenda, Michal Dudiak Preklad názvu podnázvu : Vplyv parenia na zmenu farby nepravého jadra bukového dreva Autor Dzurenda Ladislav TUZDFOD - Katedra obrábania dreva Spoluautori Dudiak Michal TUZDFOD - Katedra obrábania dreva Zdroj.dok. Acta Facultatis Xylologiae Zvolen : vedecký časopis Drevárskej fakulty. Vol. 66, no. 2 (2024), s. 23-33. - Zvolen : Technická univerzita vo Zvolene, 2024 Jazyk dok. angličtina Krajina Slovenská republika Systematika 674.031.632.2 630*81 630*811.52 630*846 Heslá bukové drevo - beech wood * nepravé jadro - false heart * farba dreva - colour of wood * parenie dreva - steaming of wood * farebné diferencie - color differences * disperzia farieb - color dispersion Anotácia The work presents the results of the color change of false heartwood of beech wood during the steaming process in a pressure autoclave in individual modes in the temperature interval t = 90 to 120 °C. The color of the wood of the false heartwood, depending on the steaming conditions, changes in opposite ways, while at temperatures up to t ≈ 105 °C it becomes pale, and at temperatures above t ≈ 115 °C it becomes darker. Based on the results of the research on the color change of the false heartwood wood in the steaming process, 3 steaming modes were proposed to achieve a targeted change in the color of the false heartwood beech. By steaming the wood with saturated moist air tI = 90 ± 2.5 °C for τ = 8 h, the color of the wood lightens, which is numerically expressed in the color space CIE L*a*b*: L* = 69.2 ± 2.9, a* = 12.7 ± 1.6 and b* = 19.7 ± 1.4. Steam mode II with saturated water steam tII = 115 ± 2.5 °C during τ = 16 h, slight darkening of the wood color of the false heartwood reaches the following values: L* = 56.0 ± 2.4, a* = 12.4 ± 1.4 and b* = 19.2 ± 1.5. The dark brown color described in the color space CIE L*a*b* by the values: L* = 50.0 ± 2.1, a* = 12.4 ± 1.3 and b* = 18.5 ± 1.4 is achieved by the vaporization mode III. at the temperature of saturated water steam tIII = 120 ± 2.5 °C during τ = 24 h. URL https://df.tuzvo.sk/sites/default/files/03-02-24_1.pdf Kategória publikačnej činnosti ADN Báza dát xcla - ČLÁNKY Druh dok. RBX - rozpis článkov z periodík Odkazy PERIODIKÁ-Súborný záznam periodika Čísla 2024: 2 
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Počet záznamov: 1