20.500.12556/RUL-110270 Razvoj eksotermno izolacijskih materialov z majhno maso Development of low mass exothermic insulating materials Eksotermno-izolacijski materiali se uporabljajo kot pomožni material v metalurški industriji. Sestavljeni so iz eksotermne in izolacijske komponente. Prva reagira eksotermno, druga pa deluje izolacijsko. S pomočjo uporabe teh materialov v jeklarnah in livarnah, zaradi manjšega odvoda toplote in eksotermnega učinka podaljšajo čas strjevanja kovinske taline. Preiskovan material se uporablja v obliki pokrovov, pri tem pa si želimo, da ima pokrov čim manjšo maso. V okviru diplomske naloge smo obravnavali eksotermno-izolacijski material in njegove sestavne surovine. Glavni cilj je bil izdelati material, ki bi imel primerljive lastnosti obstoječemu materialu Exipp in manjšo maso. Prvi korak pri tem je bil literaturni pregled eksotermno-izolacijskih materialov in analiz, ki smo jih kasneje uporabili pri raziskavi. Pri praktičnem delu smo izvedli poskus reaktivnosti obstoječega materiala in njegovih sestavnih komponent z Al2O3. Sledile so diferenčne vrstične kalorimetrije (DSC). Na osnovi literaturnih podatkov in analiz smo določili sestave novih eksotermno-izolacijskih mešanic z manjšo maso. Nato smo v podjetju Exoterm-IT d.o.o. izdelali vzorce. Le-te smo v laboratoriju analizirali z DSC. V podjetju smo na osnovnem materialu in novih vzorcih naredili industrijsko analizo z metodo Exoprobe. Rezultate analiz smo med seboj primerjali. Za konec smo izbrali, kateri od vzorcev je najbolj primeren za nadaljnje industrijske preiskave. Najbolj primernemu materialu, ki bi lahko zamenjal obstoječega, smo zmanjšali maso za 330g (31,8%). Exothermic-insulating materials are used as secondary materials in metallurgical industry. They consist of an exothermic and an insulating component. The first component reacts exothermic, second component acts as an insulator. With the use of exothermic-insulating materials in foundries and steel plants, we achive a longer solidification time, due to reduced heat dissipation and an exothermic effect. The discussed material is being used in form of covers, so we want it to be as light as possible. Within this bachelor’s thesis we took a look into already existing exothermic insulation material and its components. The main goal was to create a new sample with comparable properties to the original material, Exipp, yet lighter. The thesis consist of two parts. Firstly we took a look into existing literature regarding the exothermic-insulating materials and analysis methods, which were later used in our research. In our practical part we tested the existing material and its componetns reactivity with Al2O3. The DSC analyses were preformed after. According to the literature and analyses, we determined compositions of new lighter exothermic-insulating mixtures with a lighter mass. Samples were then made at Exoterm-IT d.o.o. The new samples were than analysed with DSC. We performed an industrial analysis with the Exoprobe method on both original material and the new samples. We compared the results of the analyses. At the end we chose the most suitable material which could replace the existing material, and which is 330 g lighter (31,8 %). Eksotermno-izolacijski materiali industrijska analiza Exoprob DSC eksotermna reakcija exothermic-insulating materials industrial analysis Exoprpb DSC analysis exothermic reaction true false false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2019-09-13 07:46:22 2019-09-13 07:46:25 2022-08-22 03:42:46 0000-00-00 00:00:00 2019 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 69845 1823583 4413.pdf 4413.pdf 1 A434E41E71CF437C7E7646F35D5E9444 8e58d2cdd003227faccd704d8272af1f44e5c847ffd9f1f46f5784087a1992a0 14933104-a1b7-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=121924 Naravoslovnotehniška fakulteta 0 0 0