Akademik Veri Yönetim Sistemi
Journal of Green Technology and Environment, cilt.2, sa.2, ss.26-34, 2024 (Hakemli Dergi)
In this study, polyurethane paint and varnish were applied to the surfaces of test samples prepared from
ash (Fraxinus exelsior L.) veneer with different surface forms at 45° and 90° angles. The objective was to determine
the changes in gloss and color values resulting from the application of these polyurethane coatings. In order to
achieve this objective, samples were prepared by bonding ash veneer with two different surface characteristics
(smooth and band sawn) onto MDF, and these were selected as test samples. Polyurethane paint-varnishes were
applied to test sample surfaces and the resulting changes in gloss and total color (∆E) were evaluated following
accelerated UV ageing. The methodology employed for the UV ageing tests, gloss tests and color tests applied to
the test samples was in accordance with the relevant standards. The findings of the research indicate that the type
of protective layer and veneer surface form are effective factors influencing gloss and ΔE values. The gloss values
were found to be high in varnishes applied to smooth veneer surfaces, while the total color change values were
determined to be low in protective layers applied to traced veneer.