Počet záznamov: 1
Physico-mechanical properties of thermally modified wood affected by its pre-treatment with polyethylene glycol
SYS 0105370 LBL 00000naa^^22^^^^^^^^450 005 20200513105810.4 017 70
$a 10.17423/afx.2020.62.1.06 $2 DOI 100 $a 20200513a m y0sloy0103 ba 101 0-
$a eng 102 $a SK 200 1-
$a Physico-mechanical properties of thermally modified wood affected by its pre-treatment with polyethylene glycol $f Miroslav Repák, Ladislav Reinprecht 215 $c Graf., tab. 320 $a Lit. 330 $a The European beech (Fagus sylvaticaL.) wood–natural,as well aspre-treated with 20 wt.% water solution of polyethylene glycol (PEG 6000) – was thermally modified at the temperatures of 170, 190 or 210 °C for 1, 2, 3 or 4 hours. The selected properties of thermally modified beech wood, i.e. soaking, volume swelling, impact bending strength and Brinell hardness changed more intensively at using more severe thermal regimes from 170 °C / 1 h to 210 °C / 4 h. The presence of polar, white-waxy consistency of polyethylene glycol macromolecules in the thermally modified beech wood specimens had different effects on their properties. PEG 6000 participated insupressing the volume swelling and soaking in water of the thermally modified beech wood specimens, and also inhibited a decrease of their impact bending strength. On the contrary, polar PEG 6000 macromolecules together with thermal loads participated in decreasing the Brinell hardness. 463 -1
$1 001 sldk_un_cat*0105278 $1 011 $a 1336-3824 $1 200 1 $a Acta Facultatis Xylologiae Zvolen $e vedecký časopis Drevárskej fakulty $v Vol. 62, no. 1 (2020), s. 67-78 $1 210 $a Zvolen $c Technická univerzita vo Zvolene $d 2020 610 1-
$9 sldk_un_auth*h001468 $a bukové drevo $X beech wood 610 1-
$9 sldk_un_auth*h016176 $a polyetylénglykol $X polyethylene glycol $X PEG 610 1-
$9 sldk_un_auth*0050136 $a termická modifikácia $X thermal modification 610 1-
$9 sldk_un_auth*h013491 $a napúčanie dreva $X swelling of wood 610 1-
$9 sldk_un_auth*0055088 $a namáčanie dreva $X wood soaking 610 1-
$9 sldk_un_auth*h010138 $a pevnosť v ohybe $X bending strength 610 1-
$9 sldk_un_auth*h004740 $a tvrdosť $X hardness 675 $a 674.031.632.2 $v 2. stred. $z slo 675 $a 630*81 $v 1. stred. $z slo 675 $a 630*812.214 $v 1. stred. $z slo 700 -1
$3 sldk_un_auth*0039706 $a Repák $b Miroslav $f 1993- $p TUZDFDT $4 070 $T Katedra drevárskych technológií 701 -1
$3 sldk_un_auth*p0028092 $a Reinprecht $b Ladislav $f 1953- $p TUZDFDT $4 070 $T Katedra drevárskych technológií 801 -0
$a SK $b ZV001 $c 20200513 $g AACR2 856 4-
$u https://df.tuzvo.sk/sites/default/files/06-01-20.pdf
Počet záznamov: 1