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Nastanek omrežja iz ogljikovih nano-cevk ter njegov vpliv na fizikalne lastnosti nano-kompozitov polietilena [Elektronski vir] = Formation of carbon nanotube network and its effect on the physical properties of polyethylene nanocompositesOseli, Alen ; Slemenik Perše, LidijaV okviru raziskave smo opazovali formacijo omrežja iz eno-stenskih ogljikovih nano-cevk v polietilenu nizke in visoke gostote (LDPE in HDPE) ter z njim pogojene mehanizme, ki vplivajo na fizikalne ... lastnosti (reološke, termične in mehanske) tovrstnih polimerov. Omrežje smo izpostavili ne-destruktivnemu plazemskemu jedkanju, s pomočjo katerega smo odkrili predvsem tokovno usmerjene snope, ki jih ne moremo mehansko ločiti (popolnoma razdreti ali erodirati). Reološke raziskave so pokazale, da se omrežje ogljikovih nano-cevk v LDPE nano-kompozitih vzpostavi pri koncentraciji ~0,3 % ter v HDPE nano-kompozitih pri ~0,2 %. Vzpostavitev omrežja je vplivala tudi na termične lastnosti, saj je upočasnila kinetiko taljenja in kristalizacije. To je bilo opaženo s premikom temperatur faznih prehodov k višjim oz. nižjim vrednostim. Poleg omenjenega je vzpostavitev omrežja močno izboljšala mehanske lastnosti, predvsem pri prenosu zunanjih sil iz matričnega materiala na nano-polnilo. S pomočjo rezultatov smo preko Youngovega modula E[sub]t opazili perkolacijski prag, ki izkazuje, da je mehanska ojačitev vezana tudi na prepletenost omrežja v matričnem materialu.Source: Kuhljevi dnevi 2020 [Elektronski vir] : zbornik del : spletna izvedba, 24.-25. september 2020 (Str. 143-151)Type of material - conference contributionPublish date - 2020Language - slovenianCOBISS.SI-ID - 32384259
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Database name | Field | Year |
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Oseli, Alen | 35754 |
Slemenik Perše, Lidija | 22701 |
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