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Pregled bibliografske jedinice broj: 124857

Depth profile of UV-induced wood surface degradation


Jirouš-Rajković, Vlatka; Turkulin, Hrvoje; Miller, E.Roy
Depth profile of UV-induced wood surface degradation // Woodcoatings-Foundations for the future
Teddington Middlesex: The Paint Research Association, 2002. str. Paper 25: 1-18 (predavanje, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)


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Naslov
Depth profile of UV-induced wood surface degradation

Autori
Jirouš-Rajković, Vlatka ; Turkulin, Hrvoje ; Miller, E.Roy

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Woodcoatings-Foundations for the future / - Teddington Middlesex : The Paint Research Association, 2002, Paper 25: 1-18

Skup
Third international woodcoatings congress

Mjesto i datum
Hag, Nizozemska, 28-30.10.2002

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
clear wood stain; photostabilisers; thin strip method; UV-exposure; wood surface degradation

Sažetak
The depth profile of weathering effects on wood was studied after laboratory ultraviolet exposure of fir-wood. The "Thin strip" method i.e. the measurement of changes in tensile properties of microtomed wood sections, was modified in terms of exposure of batches of strips packed in bundles and exposed in a QUV apparatus. The bundles of strips were exposed untreated, covered with surface strips impregnated with chromium trioxide or ferric nitrate, or protected with free films of clear stain with and without photostabilisers. It has been shown that UV light penetrated the wood surface deeper than 70  m, resulting in changes in tensile strength of strips to a depth of 70 to 140  m. Strength changes in lower levels (down to 280 m from the surface) could not be clearly attributed to the predominant effect of UV light, and were probably controlled by hydrolytic processes. 100 hours of exposure enabled the effectiveness of several treatments to be established. The clear stain enriched with UV absorber and HALS compound type was shown to offer the best protection. Impregnation with aqueous solutions of chromium (VI) trioxide and ferric nitrate proved ineffective in photostabilising the wood surface.

Izvorni jezik
Engleski

Znanstvena područja
Šumarstvo



POVEZANOST RADA


Ustanove:
Šumarski fakultet, Zagreb

Citiraj ovu publikaciju

Jirouš-Rajković, Vlatka; Turkulin, Hrvoje; Miller, E.Roy
Depth profile of UV-induced wood surface degradation // Woodcoatings-Foundations for the future
Teddington Middlesex: The Paint Research Association, 2002. str. Paper 25: 1-18 (predavanje, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)
Jirouš-Rajković, V., Turkulin, H. & Miller, E. (2002) Depth profile of UV-induced wood surface degradation. U: Woodcoatings-Foundations for the future.
@article{article, year = {2002}, pages = {Paper 25: 1-18}, keywords = {clear wood stain, photostabilisers, thin strip method, UV-exposure, wood surface degradation}, title = {Depth profile of UV-induced wood surface degradation}, keyword = {clear wood stain, photostabilisers, thin strip method, UV-exposure, wood surface degradation}, publisher = {The Paint Research Association}, publisherplace = {Hag, Nizozemska} }




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