Enhancing Thermally Modified Wood Stability against Discoloration

Thermal modification of wood has gained its niche in the production materials that are mainly used for outdoor applications, where stability aesthetic appearances is very important. In present research, spectral sensitivity to discoloration thermally modified (TM) aspen was assessed and, based on these results, possibility delay due weathering by non-film forming coating containing transparent iron oxides formulation studied. The effect including organic light stabilizers (UVA and HALS) coatings as well pretreatment with lignin stabilizer (HALS) evaluated. Artificial testing efficiency different formulations TM discoloration. For color measurements assessment, CIELAB model used. Significant differences between unmodified observed implying strategies could be effective their photostabilization. From studied concepts, inclusion red oxide into base found most approach enhancing photostability against weathering.