20.500.12556/RUL-117626 Primerjava različnih metod za določanje oprijemnosti utrjenih premazov na les diplomsko delo - visokošolski strokovni študij A comparison of different methods for the determination of adhesion of cured coatings on wood Ugotavljali smo povezave med rezultati določanja oprijemnosti premaznih sistemov, ki jih dobimo z različnimi metodami. Na bukove vzorce smo nanesli različne premazne sisteme: vodni, UV utrjujoči vodni in poliuretanski lak. Za določanje oprijemnosti smo uporabili različne metode, in sicer test s križnim rezom (SIST EN ISO 2409) ter 3 različice metode z odtrgovanjem pečatov (SIST EN 4624). Tako dobljene rezultate smo med seboj primerjali in statistično obdelali z računalniškim programom Statgraphics Centurion XVI. Izvedli smo test variance in nato z Duncanovim testom pri 95 % stopnji zaupanja dobljene rezultate razvrstili v homogene skupine. Rezultate, ki jih dobimo z metodo križnega reza, je nesmiselno primerjati s tistimi, ki jih dobimo s postopkom odtrgovanja pečatov. Možna pa je primerjava rezultatov, dobljenih s 3 različicami metode odtrgovanja pečatov. Najboljšo oprijemnost smo dosegli z UV-lakom, sledil je poliuretanski lak, najslabše rezultate pa smo dobili pri vodnem sistemu. We were establishing the link between the results of determining the adhesion of coating systems obtained by various methods. We applied different coating systems on beech wood samples: water-borne, UV-curing water-borne and polyurethane finishes. To determine the adhesion we used different methods, namely the cross-cut test (SIST EN ISO 2409), and 3 versions of the pull-off test method (SIST EN 4624). The results were compared and statistically analyzed with a Statgraphics Centurion XVI computer program. We conducted a test of variance, after which the results were sorted into homogeneous groups with Duncan's test at the 95 % level of confidence. Comparison of the results obtained by the method of cross-cutting with those obtained by the pull-off test method does not make any sense. However, it is possible to compare the results obtained by the 3 versions of the pull-off test method. The best adhesion strength was achieved with UV-curing finish, followed by the polyurethane coating, and the worst results were obtained with the water-borne system. bukovina vodni laki UV lak poliuretanski lak oprijemnost križni rez odtrgovanje pečatov beech wood UV curing finish polyurethane coating water borne lacquer adhesion pull-off test cross-cut test true false false [T. Podpečan] Slovenski jezik Angleški jezik Diplomsko delo 2020-07-17 14:46:31 2020-07-17 14:46:35 2022-08-30 03:59:15 0000-00-00 00:00:00 2014 0 Ljubljana 2014 Ljubljana IXI, 37 f., [5] f. pril. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 674.07 2341513 UNI_Podpecan_Tilen_2014.pdf UNI_Podpecan_Tilen_2014.pdf 1 DAC4F1FC090B46D46F9FD615DB2E29BB 796c1988c68fcfcd830521583e76a97977aa8d696f97920c281ea2d734c8809f 39876e36-a1b9-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=131507 Biotehniška fakulteta 0 0 0