20.500.12556/RUL-110643 Obdelava površin lesa z obžiganjem Burning wood as a finishing technique Izvedli smo obžiganje smrekovine s plamenom in vplive tega površinskega postopka obdelave na izbranih lastnostih primerjali z rezultati termične modifikacije lesa v vakuumu. Pripravljene vzorce smo analizirali z metodo FTIR spektroskopije, na površinah izmerili stične kote destilirane vode, formamida in dijodometana ter izračunali prosto površinsko energijo. Vzorce smo premazali s transparentnim premazom in z metodo odtrgovanja pečatov izmerili oprijemno trdnost premaza. Določili smo tudi spremembo barve. Rezultati nakazujejo na to, da so učinki obžiganja podobni vplivom termične modifikacije na izbrane površinske lastnosti. Pri postopku v vakuumu modifikacija poteče po celotnem prerezu lesa, medtem ko pri obžiganju le na površini. Obžiganje je v primerjavi s termično modifikacijo hitrejše, cenovno ugodnejše in bolj enostavno. We performed surface charring of spruce wood with the flame treatment, and compared its surface effects on selected properties with the influence of thermal modification of wood in vacuum. The samples were analysed with the method of FTIR spectroscopy, we measured contact angles of distilled water, formamide and diiodomethane and calculated the surface free energy. The treated samples were coated with a transparent coating and its adhesion strength was determined with the pull-off test method. The results indicate that the effects of flame treatment are similar to those caused by thermal modification in vacuume, in the case of selected surface properties. When the samples are heat treated in vacuume, bulk modification occurs, while in the case of flame treatment only the surface is affected. Charring of wood with a flame burner is in comparison with thermal modification in vacuum faster, cheaper, economically more efficient and less demanding. površina lesa obžiganje s plamenom termična modifikacija wood surface charring with flame thermal modification true false false [N. Sorčan] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2019-09-18 07:48:08 2019-09-18 07:48:09 2022-08-22 03:45:02 0000-00-00 00:00:00 2019 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 630*829.1 169136 3112585 8082.pdf 8082.pdf 1 A8673498D010D6A9E01A8C5C227659AD 43fe64d8b724300d87f62cbd16d1b614d1247ebbcfcd365dd01bf09fe324e272 2aa07ca6-a1b7-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=122318 Biotehniška fakulteta 0 0 0