Unevenly distributed thermal treatment of wood: preliminary study-density profiles

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43110%2F16%3A43909713" target="_blank" >RIV/62156489:43110/16:43909713 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s00107-016-1031-4" target="_blank" >http://dx.doi.org/10.1007/s00107-016-1031-4</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00107-016-1031-4" target="_blank" >10.1007/s00107-016-1031-4</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Unevenly distributed thermal treatment of wood: preliminary study-density profiles

Popis výsledku v původním jazyce

The present study aims to produce material with unevenly distributed density over cross section using thermal treatment. Beech (Fagus sylvatica L.) wood in dimensions of 65 x 65 x 700 mm(3) (R x T x L) was studied. Thermal modification at 160, 200 and 230 A degrees C was applied for different time exposure and evaluated using mass loss. Then, density profiles were measured in order to analyze density distribution over cross section. Low temperature and short process duration (15, 30, 60 and 120 min) with mass loss between 0.15 and 1.1 % were considered to be insufficient, whereas higher temperature of 200 and 230 A degrees C with average mass loss of 3.9 and 10 %, respectively, provides evenly modified cross section. However, uneven density profile was found for treatments at 230 A degrees C and ten 15 min intervals of exposure. Material with thermally modified surfaces with improved properties but unchanged mechanical behaviour in the middle section would provide another solution for applications for building purposes.

Název v anglickém jazyce

Unevenly distributed thermal treatment of wood: preliminary study-density profiles

Popis výsledku anglicky

The present study aims to produce material with unevenly distributed density over cross section using thermal treatment. Beech (Fagus sylvatica L.) wood in dimensions of 65 x 65 x 700 mm(3) (R x T x L) was studied. Thermal modification at 160, 200 and 230 A degrees C was applied for different time exposure and evaluated using mass loss. Then, density profiles were measured in order to analyze density distribution over cross section. Low temperature and short process duration (15, 30, 60 and 120 min) with mass loss between 0.15 and 1.1 % were considered to be insufficient, whereas higher temperature of 200 and 230 A degrees C with average mass loss of 3.9 and 10 %, respectively, provides evenly modified cross section. However, uneven density profile was found for treatments at 230 A degrees C and ten 15 min intervals of exposure. Material with thermally modified surfaces with improved properties but unchanged mechanical behaviour in the middle section would provide another solution for applications for building purposes.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JJ - Ostatní materiály

OECD FORD obor

—

Projekt

<a href="/cs/project/EE2.3.30.0031" target="_blank" >EE2.3.30.0031: Postdoktorské pozice v technických a ekonomických oborech na MENDELU</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

European Journal of Wood and Wood Products

ISSN

0018-3768

e-ISSN

—

Svazek periodika

74

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

3

Strana od-do

629-631

Kód UT WoS článku

000377363500017

EID výsledku v databázi Scopus

2-s2.0-84961218964