Colour stability of surface finishes on thermally modified beech wood

• Autorzy: Slabejova Gabriela , Šmidriakowá Maria

Identyfikatory

DOI

10.5604/01.3001.0015.2391

• Języki publikacji: EN

Abstrakty

EN

Colour stability of surface finishes on thermally modified beech wood. The paper deals with the influence of the type of transparent surface finish on the change of colour of the surfaces of native beech wood and thermally modified wood. At the same time, the colour stability of three surface finishes on the surfaces of native and thermally modified beech wood was monitored. Beech wood was thermally modified at temperature of 125 °C for 6 hours. The thermal treatment was performed in a pressure autoclave APDZ 240, by the company Sundermann s.r.o in Banská Štiavnica. Three various types of surface finishes (synthetic, wax-oil, water-based) were applied onto the wood surfaces. The colour of the surfaces of native wood and thermally modified wood was measured in the system CIELab before and after surface finishing; the coordinates L*, a*, b*, C*ab and h*ab were measured. From the coordinates measured before and after surface finishing, the differences were calculated and then the colour difference ΔE* was calculated. Subsequently, the test specimens with the surface finishes were exposed to natural sunlight, behind glass in the interior for 60 days. The surface colour was measured at specified time of the exposure (10, 20, 30, 60 days). The results showed that the colour of the wood surfaces changed after application of the individual surface finishes; and the colour difference reached a change visible with a medium quality filter up to a high colour difference. The wax-oil surface finish caused a high colour difference on native wood and on thermally modified wood as well. On native beech wood, the lowest colour difference after exposure to sunlight was noticeable on the synthetic surface finish. On the surface of wood thermally modified, after exposure to sunlight, the lowest colour difference was noticeable on the surface with no surface finish.

Słowa kluczowe

EN

beech wood; colour; surface finish; thermally modified wood

PL

drewno bukowe; kolor; wykończenie powierzchni; drewno modyfikowane termicznie

• Wydawca: Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
• Czasopismo: Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
• Rocznik: 2021
• Tom: No. 114
• Strony: 116--124
• Opis fizyczny: Bibliogr. 24 poz., rys., tab.

Twórcy

autor

Slabejova Gabriela

• Technical University in Zvolen, Faculty of Wood Sciences and Technology, Department of Furniture and Wood Products, T.G. Masaryka 24, Zvolen, SK 96001, Slovakia

autor

Šmidriakowá Maria

• Technical University in Zvolen, Faculty of Wood Sciences and Technology, Department of Furniture and Wood Products, T.G. Masaryka 24, Zvolen, SK 96001, Slovakia

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021)