Počet záznamov: 1
The effect of sunlight on the color change of steamed birch wood
SYS 0119642 LBL 00000naa^^22^^^^^^^^450 005 20230620110746.1 017 70
$a 10.17423/afx.2023.65.1.03 $2 DOI 100 $a 20170407d m y0sloc0103 ba 101 0-
$a eng 102 $a SK 200 1-
$a The effect of sunlight on the color change of steamed birch wood $f Michal Dudiak, Ladislav Dzurenda 215 $c Graf., obr., tab. 330 $a The differences in color changes of native and steamed birch wood saturated with water steam at a temperature of t = 135 °C for a period of τ = 7.5 hours caused by the long-term exposure of sunlight to the surface of the wood in interiors for 48 months are presented in the paper. The deep brown-red color of the steamed birch wood lightened and acquired a brown shade due to the UV components of sunlight during the 48-month exposure. The degree of lightening of the color of steamed birch wood in the color space CIE L*a*b* is quantified by an increase in the values of the lightness coordinate from L0* = 59.8 to L48* = 66.5 and the yellow color chromatic coordinate from b0* = 19.2 to b48* = 24.0. On the contrary, the light white-brown color of the native birch wood darkened due to the effect of the UV components of sunlight and acquired a brown-pink color with a yellow tint. The degree of darkening and browning is quantified by a decrease in the values on the lightness coordinate from L0* = 81.1 to L48* = 68.2 and an increase in the values on the chromatic coordinates: red color a0* = 7.2 to a48* = 13.1 and yellow color from b0* = 20.0 to b48* = 25.9. The comparison of the color changes of native and steamed birch wood through the total color difference ∆E* under the influence of daily sunlight shows that the surface of steamed wood shows 45.8% smaller changes than native wood. The lower value of the total color difference of steamed wood points to the fact that steaming wood with saturated water steam has a positive effect on color stability and partial resistance to the initiation of photolytic reactions caused by UV + VIS wavelengths of sunlight. 463 -1
$1 001 sldk_un_cat*0119641 $1 011 $a 1336-3824 $1 200 1 $a Acta Facultatis Xylologiae Zvolen $e vedecký časopis Drevárskej fakulty $v Vol. 65, no. 1 (2023), s. 35-43 $1 210 $a Zvolen $c Technická univerzita vo Zvolene $d 2023 541 1-
$a Vplyv slnka na zmenu farby pareného brezového dreva 610 $9 sldk_un_auth*h006539 $a brezové drevo $X birch wood 610 $9 sldk_un_auth*h002809 $a parenie dreva $X steaming of wood 610 $9 sldk_un_auth*h030171 $a nasýtené vodné pary $X saturated water steams 610 $9 sldk_un_auth*h030416 $a prirodzené starnutie $X seasoning 610 $9 sldk_un_auth*h013461 $a farba dreva $X colour of wood 610 $9 sldk_un_auth*h043199 $a farebné zmeny dreva $X colour changes of wood 675 $a 674.031.21 $v 1. stred. $z slo 675 $a 630*846 $v 1. stred. $z slo 675 $a 551.57 $v 2. stred. 675 $a 630*812.111 $v 1.stred $z slo 700 -1
$3 sldk_un_auth*0042943 $a Dudiak $b Michal $f 1993- $p TUZDFOD $4 070 $T Katedra obrábania dreva 701 -1
$3 sldk_un_auth*p0016139 $a Dzurenda $b Ladislav $f 1955- $p TUZDFOD $4 070 $T Katedra obrábania dreva 801 -0
$a SK $b ZV001 $c 20170407 $g AACR2 856 4-
$u https://df.tuzvo.sk/sites/default/files/03-01-23.pdf
Počet záznamov: 1