Impact of Heat Treatment on the Exchange of Color in Varnished Wood Materials

This study investigated the effect of heat treatment discoloration of varnished wood materials. in this purpose; samples of oriental beech (fagus orientalis lipsky), oak (quercus petreae lieble.), black poplar (populus nigra lipsky), scots pine (pinus sylvestris lipsky) and uludağ fir (abies bornmülleriana mattf.) prepared in accordance with ts 2470 and ts 53, were left in the heat-treatment oven under normal atmosphere with temperatures of 165°c, 175°c, for periods of 2, 4 hours with ±1°c temperature sensitivity in a total of 4 variations. for the surface processes, the samples were coated with synthetic, parquet and water-based varnishes in accordance with astm-d 3023 and color alteration according to astm d 2244-02 was determined. according to the results of the study; at the level of interaction between the type of wood, type of heat-treatment and type of varnish; the highest value of total color alteration was obtained from the poplar (60.96) which was varnished with synthetic varnish and heat-treated with 175/2 (°c/hours), the lowest value was obtained from the pine (10.95) which was varnished with water-based varnish and heat-treated with 165/2 (°c/hours). accordingly, the color change is desired or required furniture and decoration applications at the lowest total color change the value of water-based varnish, and the use of heat-treated pine wood were suggested.