Influence of pressing parameters on surface properties of compressed beech wood

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F17%3A43912927" target="_blank" >RIV/62156489:43410/17:43912927 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.woodresearch.sk/wr/201706/11.pdf" target="_blank" >http://www.woodresearch.sk/wr/201706/11.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Influence of pressing parameters on surface properties of compressed beech wood

Popis výsledku v původním jazyce

The influence of press conditions on wood properties was studied on densified beech wood. The pressing parameters affected the surface properties of wood specimens: hardness, roughness, and colour change. The effects and impacts varied among the individual pressing parameters and among the individual wood properties. Hardness was considerably improved by compression. The 40 % compression increased the hardness of the specimens by 2.4 to 3.4 times that of the original wood. The compression also noticeably reduced the wood surface roughness and smoothed the differences in roughness between the parallel and perpendicular directions. A higher pressing temperature and longer pressing time also caused significant changes in the wood colour. Lightness decreased, with the a* coordinate shifting to red and the b* coordinate shifting to yellow. The analysis of the results showed that the most suitable conditions for beech wood compression were: initial moisture content of 17 to 20 %, pressing temperature of 180 to 200oC, and pressing time, corresponding to the thickness of specimens, at least 10 min. For density, hardness, and roughness, more favourable results were obtained under 40 % compression.

Název v anglickém jazyce

Influence of pressing parameters on surface properties of compressed beech wood

Popis výsledku anglicky

The influence of press conditions on wood properties was studied on densified beech wood. The pressing parameters affected the surface properties of wood specimens: hardness, roughness, and colour change. The effects and impacts varied among the individual pressing parameters and among the individual wood properties. Hardness was considerably improved by compression. The 40 % compression increased the hardness of the specimens by 2.4 to 3.4 times that of the original wood. The compression also noticeably reduced the wood surface roughness and smoothed the differences in roughness between the parallel and perpendicular directions. A higher pressing temperature and longer pressing time also caused significant changes in the wood colour. Lightness decreased, with the a* coordinate shifting to red and the b* coordinate shifting to yellow. The analysis of the results showed that the most suitable conditions for beech wood compression were: initial moisture content of 17 to 20 %, pressing temperature of 180 to 200oC, and pressing time, corresponding to the thickness of specimens, at least 10 min. For density, hardness, and roughness, more favourable results were obtained under 40 % compression.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

20502 - Paper and wood

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Wood Research

ISSN

1336-4561

e-ISSN

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Svazek periodika

62

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

SK - Slovenská republika

Počet stran výsledku

12

Strana od-do

939-950

Kód UT WoS článku

000424275700011

EID výsledku v databázi Scopus

2-s2.0-85040632202