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European Journal of Wood and Wood Products

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26.02.2018 | Original

Influence of pressing parameters on dimensional stability and density of compressed beech wood

Erschienen in: European Journal of Wood and Wood Products | Ausgabe 4/2018

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Abstract

European beech (Fagus sylvatica) wood specimens were subjected to thermo-mechanical densification, and the influence of pressing parameters on dimensional stability, mean density and density profiles was evaluated. The specimens with two initial moisture contents, 18% and the fibre saturation point, were compressed by 20 and 40% at temperatures of 160, 180, 200, and 220 °C for several times, specified in the Methods, ranging from 6 to 12 min. Dimensional changes were observed immediately after the removal from the hot press and subsequent conditioning (20 °C, 65% relative humidity). The properties of the compressed beech wood were influenced by all the pressing parameters. This influence, however, varied based on the factor and property. The analysis showed as most appropriate: an initial moisture content ranging from 17 to 20%, a pressing temperature ≥ 180 °C and pressing time ≥ 10 min for the given thickness. As for the compression degree, it is necessary to consider the purpose of compression and the wood properties required.

Vorheriger Artikel Improvements in the production of wood fiber insulation boards using hot-air/hot-steam process

Nächster Artikel Effects of resin open time and melamine addition on cold pre-pressing performance of a urea–formaldehyde resin

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Titel: Influence of pressing parameters on dimensional stability and density of compressed beech wood
Publikationsdatum: 26.02.2018
Erschienen in: European Journal of Wood and Wood Products / Ausgabe 4/2018
Print ISSN: 0018-3768
Elektronische ISSN: 1436-736X
DOI: https://doi.org/10.1007/s00107-018-1298-8

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