Natural weathering of linseed oil paints

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F25%3A43927231" target="_blank" >RIV/62156489:43410/25:43927231 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00098604:_____/25:N0000003 RIV/68378297:_____/25:N0000001

Výsledek na webu

<a href="https://doi.org/10.52202/080513-0697" target="_blank" >https://doi.org/10.52202/080513-0697</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.52202/080513-0697" target="_blank" >10.52202/080513-0697</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Natural weathering of linseed oil paints

Popis výsledku v původním jazyce

Wood deterioration in exterior applications is an important issue not only for the preservation of cultural heritage. Traditional oil paints have been applied to wooden surfaces for centuries and are able to last for 50 to 100 years if maintained regularly. However, there are not many studies that have examined the behaviour and durability of these paints in outdoor conditions. Eight paint systems with linseed oil as a binder and differing in pigment type and number of coats were investigated. Painted specimens were exposed outdoors and monitored for five years during which changes in surface temperature, moisture content, gloss, colour and chemical composition were recorded. The paint colour lightness affected the final surface temperature, which in turn affected moisture intake and release. The initial gloss of the opaque paints decreased significantly over three years to match the level of semi-transparent ones, which had been dull from the beginning. The colour of opaque paints was relatively stable over the period of exposure, except for the white paint, where the contrast with the accumulating dirt and mould was clearly visible. In contrast, semi-transparent paints lost most of the pigmented layer and the resulting colour was significantly influenced by discolouration of exposed wood. The Attenuated total reflectance-Fourier transform infrared (ATR-FTIR) analysis confirmed the gradual degradation of linseed oil in the surface layer of opaque paints, while in the semi-transparent systems, pigment loss was demonstrated and spectra corresponding to wood began to appear.

Název v anglickém jazyce

Natural weathering of linseed oil paints

Popis výsledku anglicky

Wood deterioration in exterior applications is an important issue not only for the preservation of cultural heritage. Traditional oil paints have been applied to wooden surfaces for centuries and are able to last for 50 to 100 years if maintained regularly. However, there are not many studies that have examined the behaviour and durability of these paints in outdoor conditions. Eight paint systems with linseed oil as a binder and differing in pigment type and number of coats were investigated. Painted specimens were exposed outdoors and monitored for five years during which changes in surface temperature, moisture content, gloss, colour and chemical composition were recorded. The paint colour lightness affected the final surface temperature, which in turn affected moisture intake and release. The initial gloss of the opaque paints decreased significantly over three years to match the level of semi-transparent ones, which had been dull from the beginning. The colour of opaque paints was relatively stable over the period of exposure, except for the white paint, where the contrast with the accumulating dirt and mould was clearly visible. In contrast, semi-transparent paints lost most of the pigmented layer and the resulting colour was significantly influenced by discolouration of exposed wood. The Attenuated total reflectance-Fourier transform infrared (ATR-FTIR) analysis confirmed the gradual degradation of linseed oil in the surface layer of opaque paints, while in the semi-transparent systems, pigment loss was demonstrated and spectra corresponding to wood began to appear.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20506 - Coating and films

Projekt

<a href="/cs/project/DH23P03OVV005" target="_blank" >DH23P03OVV005: Prevence a údržba dřevěných konstrukcí v památkovém zájmu</a><br>

Návaznosti

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

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název statě ve sborníku

14th World Conference on Timber Engineering 2025 (WCTE 2025): Advancing Timber for the Future Built Environment: Proceedings

ISBN

979-8-3313-2089-8

ISSN

—

e-ISSN

—

Počet stran výsledku

8

Strana od-do

5657-5664

Název nakladatele

Curran Associates, Inc.

Místo vydání

Red Hook

Místo konání akce

Brisbane

Datum konání akce

22. 6. 2025

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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