Naslov
Dimensional stability of particleboards

Autori
Medved, Sergej ; Điporović-Momčilović, Milanka ; Popović, Mlađan ; Antonović, Alan ; Jambreković, Vladimir

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
First Serbian Forestry Congress - Future with Forests / Ristić, Ratko ; Medarević, Milan ; Popović, Zdravko - Beograd : Faculty of Forestry University of Belgrade, 2010, 293-293

ISBN
978-86-7299-066-9

Skup
First Serbian Forestry Congress - Future with Forests

Mjesto i datum
Beograd, Srbija, 11.11.2010. - 13.11.2010

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
particleboard; thickness swelling; wood species; resin content; density

Sažetak
When exposed to water or moist environment particleboards tend to swell and expand in all directions. The most visible is swelling in thickness that is higher than horizontal expansion. Thickness swelling of particleboards is influenced by many factors. Among the most important are raw material used, type and share of adhesive used and density of the produced boards. The purpose of this paper is to present the impact of wood species used, share of adhesive and board density on thickness swelling after 24-hour immersion in water. Several three-layer and single-layer particleboards bonded with urea-formaldehyde adhesive were made in laboratory conditions where wood species (three-layer made from spruce, beech, oak and poplar particles), resin content (three-layer, core layer: 6 to 9% ; surface layer: 10 to 13%) and density of board (single-layer with density between 0.7 and 1.0 g/cm3) were altered. In boards where resin content and density was altered industry made particles were used. Thickness swelling was determined with 24-hour immersion test. It was determined that the highest swelling was determined when beech particles were used, and the lowest when oak and spruce particles were used. The biggest changes in swelling and pressure were observed when the resin content was changed in the core layer. The swelling was also influenced by the density of boards. It was determined that the highest swelling was observed in boards with the highest density.

Izvorni jezik
Engleski

Znanstvena područja
Drvna tehnologija

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