Impacts of Bleaching and Varnishing Process on the Amount of CO2 in Scotch Pine (Pinus sylvestris Lipsky) Wood Material

Abstract

This study was carried out to determine the effects of bleaching and varnishing process on the amount of CO2 in Scotch pine (Pinus sylvestris Lipsky) wood material. For this purpose, samples of Scotch pine wood prepared according to ASTM D 358 [1] contain 18% R1 = (NaOH + H2O2), R2 = (NaOH + Ca(OH)2 + H2O2), R3 = (Na2S2O5 + H2C2O4), R4 = (NaSiO3 + H2O2), R5 = (KMnO4 + Na2S2O5 + H2O2) solution groups, after bleaching with solution groups, water based (Sb), synthetic (Sn), polyurethane (Pu) and acrylic varnish (Av) were applied according to ASTM D 3023 [3] and compliance with ASTM E 160-50 guidelines in combustion tests. Gas measurements were made with the SIGMA 74,172 NSU flue gas device during the combustion process. As a result, the amount of CO2 in the flame source combustion (ppm); The highest R1 (8.500), the lowest R3 (2.907), the highest R1 in the varnish level (5.314), the lowest Pu (2.853) Av (14.773) and lowest R2 + Sv (0.633) were obtained. The amount of CO2 in without flame combustion temperature (ppm); the highest values were Sb (6.686), the lowest Pu (5.419), the highest R1 (9.367) and the lowest R3 (5.407) Sb (19.43) and lowest R3 + Sv (1.167). Baking combustion CO2 content (ppm); the highest Pu (5.127) at the varnish level, the lowest at Sv (2.522), the bleaching materials at the level is highest at R1 (5.980), lowest at R4 (2.180), according to bleaching materials and the varnish type interaction is the highest R1 + P (15.29), also the lowest R5 Av + (0.7833) was obtained. Accordingly, the highest results in terms of the amount of CO2 in the Scotch pine wood were found in the water-based varnish with the R1 solution.