20.500.12556/RUL-102556 Določitev volumskih lastnosti polikarbonata pri različnih temperaturnih in tlačnih pogojih Determination of volumetric properties for polycarbonate at different temperature and pressure conditions Značilnost polimernih materialov je, da so njihove lastnosti časovno odvisne. Temeljna procesa, ki se odvijata ob konstantni obremenitvi materiala, sta lezenje in relaksacija. Časovno odvisne lastnosti so pri enoosni in strižni obremenitvi za različne polimere dokaj dobro znane, malo informacij pa je na voljo o časovno odvisnih volumskih lastnostih materialov. V diplomski nalogi so obravnavane volumske lastnosti izbranega polimernega materiala polikarbonata. Meritve so bile izvedene na laboratorijski merilni napravi CEM Measuring System, kjer so bile merjene časovno odvisne volumske lastnosti pri različnih temperaturah in tlakih. Iz meritev smo določili termični koeficient linearnega raztezka, specifični volumen in volumsko voljnost materiala. One of the interesting features of polymeric materials is that their properties are time dependent. When constant load is applied to the material, two fundamental processes occur, creep and relaxation. Time dependent properties for diverse polymers are fairly known in case of single axis and shear load, however, little information is available on time dependent volumetric properties of materials. The thesis discusses volumetric properties of the selected polymeric material polycarbonate. Measurements were performed on an apparatus, called CEM Measuring System, where time dependent volumetric properties were measured at various pressures and temperatures. Thermal coefficient of linear expansion, the specific volume and bulk creep compliance were determined by analyzing and processing measurement data. polimeri viskoelastični materiali volumske lastnosti volumska voljnost vpliv temperature in tlaka polikarbonat polymers viscoelastic materials volumetric properties bulk creep compliance temperature and pressure dependance polycarbonate true false false [J. Pestotnik] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2018-09-02 07:45:44 2018-09-02 07:45:45 2023-11-14 12:50:06 0000-00-00 00:00:00 2018 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 620.176.5:539.3(043.2) 207469 16295963 2005.pdf 2005.pdf 1 DA6C38968011BCC6890C03C911F56C60 24c5ae95a97bd87081f3b479614f3d8530c48a1cce535411d4bba5e8e980bfec 8ce523c2-a1b5-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=112881 Fakulteta za strojništvo 0 0 0