20.500.12556/RUL-186542 Učinkovitost sintetičnih olj za impregnacijo lesa Effectiveness of synthetic oils for wood impregnation Namen diplomske naloge je bil ugotoviti učinkovitost sintetičnih olj za zaščito lesa pred glivami. V nalogi smo preučevali fungicidne lastnosti parafinskega in silikonskega olja na podlagi eksperimentov v skladu s standardi EN 113 in EN 84, pri katerih smo vzorce izpostavili glivam Gloeophyllum trabeum in Poria monticola. Vzorce smreke Picea abies smo vakuumsko-tlačno impregnirali, polovico smo jih izpostavili izpiranju po standardu EN 84, pripravili gojišča in jih izpostavili delovanju gliv. Vzorce smo glivam izpostavili 16 tednov. Preverjali smo tudi lastnosti penetracije olj s hiperspektralnim oslikovanjem ter odpornost proti glivam modrivkam in vlažnosti z izpostavitvijo smrekovih CLT-vzorcev vremenskim vplivom. CLT-vzorce smo s čopičem premazali z olji. Vzorce smo pustili 48 h na prostem, da so se posušili. Nato smo jih izpostavili na prostem, na posebej načrtovanem ogrodju. Na les smo pritrdili tudi senzorje za spremljanje vlažnosti. Rezultati testiranja kažejo, da olja niso primerna kot fungicidna sredstva, razen pri vzorcih z dodanim Cu-karbonatom, izpostavljenih glivi Gloeophyllum trabeum. Hiperspektralno oslikovanje je pokazalo, da penetracija močno variira. Pri spremljanju vlažnosti se je pokazalo, da Cu-karbonat deluje pozitivno, saj je zmanjšal vlažnost srednjega sloja. The aim of this thesis was to determine the effectiveness of synthetic oils in protecting wood against fungi. We investigated the fungicidal properties of paraffin and silicone oils through experiments conducted in accordance with the EN 113 and EN 84 standards, exposing samples to the fungi Gloeophyllum trabeum and Poria monticola. Norway spruce Picea abies samples were vacuum–pressure impregnated; half were subjected to leaching according to EN 84, after which culture media were prepared and the samples exposed to fungal activity. The samples were exposed to the fungi for 16 weeks. We also assessed oil penetration using hyperspectral imaging, as well as resistance to blue-stain fungi and moisture, by exposing spruce CLT samples to weathering conditions. The CLT samples were coated with the oils using a brush and left outdoors for 48 hours to dry. They were then exposed outdoors on a specially designed rack. Moisture monitoring sensors were also attached to the wood. The test results indicate that the oils are not suitable as fungicidal agents, except in the case of samples containing added copper carbonate exposed to Gloeophyllum trabeum. Hyperspectral imaging revealed significant variation in penetration. Moisture monitoring showed that copper carbonate had a beneficial effect, as it reduced the moisture content of the middle layer. les zaščita lesa sintetična olja glive razkrojevalke penetracija olja wood wood protection synthetic oils wood decay fungi oil penetration true false false [T. Šoba] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2026-09-03 07:17:33 2026-09-03 07:17:39 2026-09-04 04:30:39 0000-00-00 00:00:00 2026 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 630*844.4(043.2) 286703 289895427 DIP_Soba_Tomaz_2026.pdf DIP_Soba_Tomaz_2026.pdf 1 1DDAC814FC3AF7F642627972F4902B79 b28d7e513e9f62c607f59414c5f273bf871fd589584c538944a0d05d25ce7f32 5932943c-a756-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=245813 Biotehniška fakulteta 0 0 0