20.500.12556/RUL-289 Kakovost meljavine in vpliv na lastnosti kartona in papirja diplomsko delo Quality of pulp and its influence on characteristics of paperboard and paper visokošolski strokovni študij Fizikalno mehanske lastnosti vlaknine se z mehansko obdelavo spreminjajo. Če vlaknina ni mleta, ima list, izdelan iz takšne vlaknine, zelo slabe mehanske lastnosti. To velja tudi za papir, katerega vlaknine smo le malo mleli. Z napredujočim časom mletja raste stopnja mletja. Istočasno tudi mehanske lastnosti rastejo do določene maksimalne vrednosti, nato pričnejo upadati. Krivulja rasti mletja kot tudi mehanskih lastnosti je odvisna od vrste in kakovosti vlaknine. če hočemo določiti kakovost vlaknine, moramo le-to podvreči laboratorijskemu mletju na standardiziranih mlelnih aparatih pri standardiziranih pogojih. S standardiziranimi metodami določimo tudi fizikalno mehanske lastnosti vlaken. Oboje je predpogoj, da rezultate, dobljene pri analizi iste ali različne vlaknine, medsebojno primerjamo. Mechanical treatment changes physically-mechanical characteristics of fibrin. The paper made from fibrin, which is not ground, has very bad mechanical characteristics. These apply also to papers, made of fibrin, which is only less ground. The degree of grinding grows parallelly to increasing time of grinding. At the same time, mechanical characteristics also grow to a certain maximum value, then they start to decrease. Curve of grinding growth, so as that of mechanical characteristics, depends on kind and qualities of fibrin. To define the quality of fibrin it must be subjected to laboratorial grinding using standard grind machines at standard conditions. Physically-mechanical characteristics of fibrin are to be defined with standard procedures as well. They both are prerequisite for the results gained by analysing the same or a different fibrin are mutually compared. les vlakna meljavina mletje papir mehanske lastnosti wood fibre pulp grinding paper mechanical characteristics true false false [M. Mališ] Slovenski jezik Angleški jezik Diplomsko delo 2014-07-11 12:24:56 2014-07-11 12:24:56 2022-07-11 10:16:38 0000-00-00 00:00:00 2008 0 Ljubljana 0 XI, 64 f. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 630*861 1648777 vs_Malis_miroslav.pdf vs_Malis_miroslav.pdf 1 B1813F5A61FCAA41974FE480E12C8B72 19f5cd616085f97ed157052a55b7d9f234bcb84e56e913d4687924a1fe9522c5 5c1daecb-a1b9-11eb-a523-00155dcfd717 20.500.12556/rul/05da6b90-830d-409c-82b9-028cfffb1ad4 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=132290 Biotehniška fakulteta 0 0 0