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Polimeri v konstrukcijah : zaključna naloga Univerzitetnega študijskega programa I. stopnje Strojništvo - Razvojno raziskovalni program
Barbarić, Ivan Žan
Polimeri so v današnjem času nepogrešljivi inženirski materiali. V sklopu zaključne naloge smo z uporabo strokovne literature analizirali strukturo in lastnosti polimerov, ki vplivajo na njihovo ...uporabo v konstrukcijah. Cilj naloge je bil ugotoviti, kako hitrost spreminjanja temperature in izpostavljenost vremenskim vplivom vplivata na izbrane polimerne materiale. Eksperimente smo izvedli na polimerih: polikarbonat (PC), polimetil metakrilat (PMMA) in polioksimetilen (POM). S tehnikama diferenčne dinamične kalorimetrije in dinamične mehanske analize smo proučevali, kako se vrednost temperature steklastega prehoda (Tg) spreminja s spreminjanjem hitrosti segrevanja in ob izpostavljenosti vremenskim vplivom. Z višanjem hitrosti spreminjanja temperature je pri PC in PMMA naraščala temperatura začetka območja Tg, medtem ko, hitrost segrevanja ni imela vpliva na POM. Izpostavljenost vremenskim vplivom je povzročila veliko količino absorbirane vlage pri PMMA, medtem ko, so bile spremembe pri PC in POM zanemarljive.
Type of material - undergraduate thesis
; adult, serious
Publication and manufacture - Ljubljana : [I. Ž. Barbarić], 2024
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