20.500.12556/RUL-457 Vpliv izbranega lepila na gostotni profil pri izdelavi ivernih plošč diplomsko delo - univerzitetni študij Impact of adhesive type on density profile at particle board making graduation thesis - university studies Raziskali smo vpliv vrste ter deleža lepila na nastanek gostotnega profila pri izdelavi ivernih plošč. Za izdelavo smo uporabili industrijsko iverje ter UF- oziroma MF-lepilo. Plošče smo izdelali pri laboratorijskih pogojih s 6,00-9,00 % deleža lepila v srednjem in z 10,00-13,00 % v zunanjem sloju. Med stiskanjem smo merili spremembo temperature v sredini plošče, med zunanjim in srednjim slojem plošče ter med iverno in grelno ploščo stiskalnice. Gostotni profil smo določevali z metodo merjenja porazdelitve gostote, za kar smo uporabili merilnik gostotnih profilov MGP-201. Ugotovili smo, da vrsta lepila ne vpliva na prehod toplote med posameznimi ploščami in da z lepilom ne vplivamo na spremembo gostotnega profila. S povečanjem faktorja oblepljanja vplivamo na hitrost segrevanja in s tem posledično na spremembo gostotnega profila. The impact of adhesive type and its share in forming density profile at making of particle boards was researched. Industrial particles were blended with urea-formaldehyde and melamine-formaldehyde resin. Particleboards were made in laboratory conditions with 6.00 - 9.00 % share of glue in the core layer, and 10.00 - 13.00 % in the surface layer. During pressing the temperature change was measured in the middle of the particleboard, between intersection core and surface layer, and between surface layer and heating plate. Density profile was appointed by a measuring procedure of density distribution, using instrument MGP-201 for measuring of density profiles. It was found out that the type of adhesive does not influence temperature increase in CL, so as that the glue alone does not influence the change of density profile. Enlarging the gluing factor influences the speed of warming, and therefore, as a consequence, the change of density profile. iverna plošča UF lepilo MF lepilo gostotni profil particleboard UF resin MF resin density profile true false false [D. Kužnik] Slovenski jezik Angleški jezik Diplomsko delo 2014-07-11 12:25:41 2014-07-11 12:25:41 2022-07-11 10:25:17 0000-00-00 00:00:00 2009 0 Ljubljana 0 VIII, 52 f. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 630*862.2 1779593 dn_kuznik_dominik.pdf dn_kuznik_dominik.pdf 1 10C0D1FF590FC678B3940479472CB67A e0ec2ab7c564d71334e7e1827c2044562e2df16e25b47838e7f6681144582b84 5fcb2a22-a1b9-11eb-a523-00155dcfd717 20.500.12556/rul/462290cc-c102-4806-993a-24236e1b9c54 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=132346 Biotehniška fakulteta 0 0 0