Uticaj kombinovanih aktivnih punila na svojstva elastomernih materijala za ekološki prihvatljive pneumatike

Main Article Content

Dejan Kojić
Nada Lazić
Jaroslava Budinski-Simendić
Milena Špirkova
Pero Dugić
Sanja Ostojić
Jelena Pavličević

Abstract

Primenom stiren-butadienskog kaučuka kao prekursora mreže, i kombinacije nanočestica čađi i silicijum(IV)oksida (SiO2),pri različitim phr sadržajima (50/0, 35/15, 25/25, 15/35, 0/50 phr), sintetisani su nanokompoziti sa adekvatnim svojstvima za ekološki prihvatljive pneumatike. Proučavana je raspodela punila u elastomernoj matrici, i ispitan je uticaj kombinovanih punila na karakteristike mešanja, umrežavanje, kao i na termička, dinamičko-mehanička i mehanička svojstva umreženih nanokompozita. Obrazovanje najvećih aglomerata je uočeno u u strukturi nanokompozita ojačanog sa 25 phr čađi i 25 phr sintetisanog silicijum(IV)oksida. Povećanjem sadržaja silicijum(IV)oksida u kombinovanom punilu, rastu vrednosti minimalnog momenta na 100, 150 i 160 °C (u skladu sa sklonošću SiO2 da učestvuje u punilo-punilo interakcijama). Vreme početka umrežavanja i vreme optimalnog umrežavanja se produžavaju dodatkom SiO2. Primenom modulovane diferencijalno skenirajuće kalorimetrije i dinamičko-mehaničke analize je utvrđena temperatura prelaska u staklasto stanje. Kompoziti sa kombinovanim punilima ispunjavaju zahteve u industriji pneumatika, nisku vrednost mehaničkog faktora gubitaka između 40 i 80 °C, radi smanjenja otpornosti na kotrljanje i uštede u potrošnji goriva, uz istovremeno visoki histerezis na niskim temperaturama (od -20 do 0 °C), u cilju postizanja visoke otpornosti na klizanje na ledu i mokrom kolovozu. Utvrđen je i uticaj dodatka kombinovanog punila na zateznu čvrstoću i otpornost na abraziju sintetisanih nanokompozita.

Article Details

Section

Engineering of Materials - Composites

Author Biographies

Dejan Kojić, Tehnološki Fakultet Novi Sad, Univerzitet u Novom Sadu


Jaroslava Budinski-Simendić, Univerzitet u Novom Sadu, Tehnološki fakultet Novi Sad, Novi Sad

Katedra za Inženjerstvo materijala, redovni profesor

Jelena Pavličević, Univerzitet u Novom Sadu, Tehnološki fakultet Novi Sad, Novi Sad

Katedra za opšte inženjerske discipline, vanredni profesor

How to Cite

[1]
D. Kojić, “Uticaj kombinovanih aktivnih punila na svojstva elastomernih materijala za ekološki prihvatljive pneumatike”, Hem Ind, vol. 72, no. 5, pp. 293–303, Oct. 2018, doi: 10.2298/HEMIND180227021K.

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