20.500.12556/DKUM-89784 Chemical decomposition of thermosets diplomsko delo Kemijska razgradnja termosetov This bachelor thesis depicts the chemical degradation of polyurethane and melamine formaldehyde, which are representatives of thermosets. A high–pressure reactor was used to perform chemical degradation. The effectiveness of the chemical degradation of the selected thermosets was monitored by measuring pH, total organic carbon (TOC) and total nitrogen (TN) of the liquid residues. The remaining solid material was characterized by infrared spectroscopy and the mass loss was determined. Using these analytical methods, it was concluded that the chemical degradation depends on the temperature and the duration of the reactions as well as the reaction medium. It was found that “white liquor” is a more effective medium for the chemical degradation of polyurethane and melamine formaldehyde than water. Diplomsko delo prikazuje kemijsko razgradnjo poliuretana in melamin formaldehida, ki sta predstavnika termosetov. Za izvedbo potrebne kemijske razgradnje je bil uporabljen visokotlačni reaktor. Učinkovitost kemijske razgradnje izbranih termosetov smo spremljali z meritvijo pH vrednosti, vrednosti celokupnega organskega ogljika (TOC) in celokupnega dušika (TN) tekočega ostanka. Preostel trden materialu smo okarakterizirali z infrardečo spektroskopijo in določili izgubo mase. Z uporabo teh analiznih metod je bilo ugotovljeno, da je kemijska razgradnja odvisna od temperature in časa reakcije ter reakcijksega medija. Izkazalo se je, da je ,”white liquor” bolj učinkovit medij pri kemijski razgradnji poliuretana in melamin formaldehida kot voda. chemical degradation polyurethane melamine formaldehyde FTIR kemijska razgradnja poliuratan melamin formaldehid FTIR true true false [V. Handjiski] Angleški jezik Slovenski jezik Diplomsko delo/naloga 2024-08-12 10:52:58 2024-10-22 13:35:16 2025-10-30 03:15:09 0000-00-00 00:00:00 2024 0 Maribor 0 Maribor 1 spletni vir (1 datoteka PDF (XV, 70 f.)) 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 66.092:678.6(043.2) 255231491 Diplomska_naloga_Vasil_Handjiski_nova.pdf Diplomska_naloga_Vasil_Handjiski_nova.pdf 1 B0873F42D45B4EB760BB7A83EBBA94A6 24f15f46828f30fd01c63df0b244b0a63b58335c498a941acda2816bb3a5e15d 81a9e16d-9069-11ef-9244-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=186751 Fakulteta za strojništvo 0 0 0