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The color of beech wood modified in air, paraffin or polyethylene glycol, and after following weathering in xenotest
Názov The color of beech wood modified in air, paraffin or polyethylene glycol, and after following weathering in xenotest Aut.údaje Miroslav Repák, Ladislav Reinprecht Autor Repák Miroslav TUZDFDT - Katedra drevárskych technológií Spoluautori Reinprecht Ladislav TUZDFDT - Katedra drevárskych technológií Zdroj.dok. Acta Facultatis Xylologiae Zvolen : vedecký časopis Drevárskej fakulty. Vol. 63, no. 2 (2021), s. 55-71. - Zvolen : Technická univerzita vo Zvolene, 2021 Poznámky Lit. Jazyk dok. angličtina Krajina Slovenská republika Systematika 674.031.632.2 630*81 665.7.033.22 Heslá bukové drevo - beech wood * parafín - paraffine * polyetylénglykoly - polyetylene glycols * termická modifikácia - thermal modification * odolnosť dreva voči klimatickým činiteľom - weathering durability * farba dreva - colour of wood Anotácia The thermal treatment of European beech (Fagus sylvatica L.) wood specimens was performed in three different media – air, paraffin or polyethylene glycol 6000 (PEG 6000) – during 1, 2, 3 or 4 hours, applying either only heating at a temperature of 100 °C or modification process at the temperatures of 190 °C and 210 °C. Following, the thermally treated specimens were artificially weathered in Xenotest in an accordance with the modified EN 927-6 (2018) for 6-weeks. The color parameters L*, a*, and b* of beech specimens were measured in their original state, after thermal treatment, and finally after weathering. The total color difference DE*ab values of the air-thermally, paraffin-thermally and PEG- thermally modified beech specimens ranged from 23.6 (for air-thermal mode 190 °C/1h) up to 55.8 (for PEG-thermal mode 210 °C/4h), evidently in connection with their apparent darkening with DL* from – 22.9 up to – 54.2. Due to the following exposure of beech specimens in Xenotest, the highest total color difference DE*ab from 20.1 to 36.4 had the PEG-thermally modified ones, which evidently lightened with DL* from 18.6 to 32.6. At weathering the PEG-thermally modified beech wood specimens were the best resistant against creation of cracks in surfaces, in contrast to the air-thermally modified specimens. URL https://df.tuzvo.sk/sites/default/files/05-02-21_0_0_0.pdf Kategória publikačnej činnosti ADN Báza dát xcla - ČLÁNKY Druh dok. RBX - rozpis článkov z periodík Odkazy PERIODIKÁ-Súborný záznam periodika Čísla 2021: 2 
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Počet záznamov: 1