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Vpliv reaktivnega fleksibilizatorja na trdnost in udarno žilavost epoksidne smole : zaključna naloga Razvojno raziskovalnega programa I. stopnje StrojništvoMetulj, Andraž, strojnikEpoksidna smola je vsestranski material, ki je najbolj razširjen kot vezni material pri izdelavi kompozitov z vlakni in tkaninami, pogosto pa tudi kot lepilo. Ima odlične livne lastnosti, relativno ... majhne skrčke in visoko statično trdnost ter nizko absorptivnost vlage v primerjavi s konkurenčnimi smolami. Slabost je predvsem v nizki udarni žilavosti in občutljivosti na zareze. Žilavost se izboljša z dodajanjem reaktivnega fleksibilizatorja, ki se veže v sicer zelo togo molekularno strukturo epoksi smole in ji doda elastičnost, hkrati pa znatno zniža trdnost. Zaključno nalogo smo zastavili tako, da smo spreminjali volumski delež reaktivnega fleksibilizatorja v epoksidni smoli z namenom ovrednotenja njegovega vpliv na mehanske lastnosti. Pripravili smo štiri različne mešanice, in sicer z 0, 20, 40 in 60 % fleksibilizatorja. Spreminjanje statične trdnosti in razteznosti smo preverili z nateznim, tlačnim in tritočkovnim upogibnim preizkusom. Udarno žilavost smo preizkušali s Charpyjevim preizkusom, trdoto pa po Shore D metodi. Iz rezultatov je bilo razvidno, da z večanjem deleža fleksibilizatorja narasteta žilavost in razteznost epoksidne smole, padeta pa trdnost in trdota. Do 40 % vsebnosti fleksibilizatorja je bilo razmerje med padcem trdnosti in povečanjem duktilnosti še ugodno za uporabo, pri 60 % pa postane material podoben gumi in neuporaben v aplikacijah, kjer je zahtevana določena trdnost.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Ljubljana : [A. Metulj], 2019Language - slovenianCOBISS.SI-ID - 16936731
Author
Metulj, Andraž, strojnik
Other authors
Šturm, Roman, 1965-
Topics
diplomske naloge |
epoksidne smole |
fleksibilizatorji |
duktilnost |
trdnost |
trdota |
epoxy resins |
flexibilizers |
ductility |
strength |
hardness
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Library/institution |
City | Acronym | For loan | Other holdings |
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Faculty of Mechanical Engineering, Ljubljana | Ljubljana | FSLJ |
reading room 1 cop.
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Year | Impact factor | Edition | Category | Classification | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Metulj, Andraž, strojnik | ![]() |
Šturm, Roman, 1965- | 13026 |
Source: Personal bibliographies
and: SICRIS
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