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Colour modification of Robinia pseudoacacia L. during the processes of heat treatment with saturated water steam
Názov Colour modification of Robinia pseudoacacia L. during the processes of heat treatment with saturated water steam Aut.údaje Ladislav Dzurenda Autor Dzurenda Ladislav TUZDFOD - Katedra obrábania dreva Zdroj.dok. Acta Facultatis Xylologiae Zvolen : vedecký časopis Drevárskej fakulty. Vol. 60, no. 1 (2018), s. 61-70. - Zvolen : Technická univerzita vo Zvolene, 2018 Poznámky Lit. Jazyk dok. angličtina Krajina Slovenská republika Systematika 630*847 Heslá tepelná úprava dreva - wood thermal treatment * Robinia pseudoacacia L. - Robinia pseudoacacia L. * pestovanie agátu - black locust cultivation * farba dreva - colour of wood * nasýtené vodné pary - saturated water steams Anotácia The results of the heat treatment process with saturated water steam of black locust wood in terms of the effect of the saturated water steam temperature and the exposure time on the colour modification of woodturning blanks of black locust with dimensions of 30 × 50 × 500 mm and on the heat consu mption are presented in the paper. The colour of woodturning blanks of black locust was modified by modes at the temperatures: t I = 112.5 ± 2. 5 O C for τ = 5 5 ho urs ( mode I ), t II = 127. 5 ± 2,5 O C for τ = 6.5 hours ( mode II ) a nd t III = 137.5 ± 2. 5 O C for τ = 7.5 hours . ( mode III ). The colour of wood was determined using Color Reader CR - 10 a nd described with the coordinates of CIE - L*a*b*colour space. There is only a minimal change in the colour of black locust wood during the heat treatment by mode I, the wood becomes slightly brown. Brown - gray colour is achieved by mode II. Black locust wood thermally modified by mode III gets an original dark brown - gray colour. When the temperature of saturated water steam during the heat treatment process is increased an d the exposure time of the colour modification of black locust wood is prolonged, the lightness of the hue is affected, wood darkens. Specific hues are achieved in the case of increasing values of red coordinate a* and decreasing values of yellow coordinat e b* . Heat consumption depending on the temperature of saturated water steam and exposure time of colour modification of black locust woodturning blanks ranges from Q TZN = 111.29 – 139.13 kWh/m 3 . Irreversible changes in the colour of black locust wood ach ieved during some of modes of colour modification with saturated water steam widen the possibility for its use in the field of construction and carpentry, design as well as in the field of art. URL https://df.tuzvo.sk/sites/default/files/07-01-18_0.pdf Kategória publikačnej činnosti ADN Báza dát xcla - ČLÁNKY Druh dok. RBX - rozpis článkov z periodík Odkazy PERIODIKÁ-Súborný záznam periodika Zväzky 2018: 1-2 
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Počet záznamov: 1