Effect of larch wood extractive leaching on accelerated weathering aging durability of oil-based coatings
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41320%2F23%3A97097" target="_blank" >RIV/60460709:41320/23:97097 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.2478/forj-2022-0018" target="_blank" >http://dx.doi.org/10.2478/forj-2022-0018</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.2478/forj-2022-0018" target="_blank" >10.2478/forj-2022-0018</a>
Alternative languages
Result language
angličtina
Original language name
Effect of larch wood extractive leaching on accelerated weathering aging durability of oil-based coatings
Original language description
Wood is a natural material and is subject to degradation due to weather, UV radiation, and humidity. Wood is composed of many components. The basic structural elements of wood include cellulose, hemicellulose, and lignin. Furthermore, these are accompanying substances, which also include extractive substances. Specifically, these substances, together with lignin, have a negative effect on its life thanks to their chemical reactions, which are initiated mainly by UV radiation (so-called photodegradation). This study evaluates the effect of controlled degradation of extractives and lignin on the surface of the wood before the application of the coating system and also on its overall service life. Samples of larch wood (Larix decidua Mill.) were exposed to exterior natural influences in Prague (Czech Republic) according to EN 927-3 (2020) for 10 and 20 weeks. Subsequently, the samples were sterilized in an autoclave, due to possible contamination of the surface with fungi. The specimens were then treated with two oil-coating systems (V-420 and V-429). Subsequently, they were exposed to artificial aging in a UV chamber according to EN 927-6 (2019). Testing occurred at predetermined time intervals of 0, 1, 3, and 6 weeks, roughly corresponding to 0, 2, 6, and 12 months outdoors. The evaluated factors were the change in color, gloss, and surface wettability. The results showed a slightly positive effect of surface washout lasting ten weeks before applying the coating system.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
40102 - Forestry
Result continuities
Project
<a href="/en/project/TH02020873" target="_blank" >TH02020873: Improving of coatings durability on selected kinds of wood in the exterior applications</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Central European Forestry Journal
ISSN
2454-034X
e-ISSN
2454-034X
Volume of the periodical
69
Issue of the periodical within the volume
2
Country of publishing house
DE - GERMANY
Number of pages
6
Pages from-to
126-131
UT code for WoS article
000991889800007
EID of the result in the Scopus database
2-s2.0-85160680291