Naslov
Change of Network Structure of Natural Rubber Vulcanizate with Thermo Ageing

Autori
Hrnjak- Murgić, Zlata ; Jelenčić, Jasenka ; Bravar, Mladen

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
XXth Danubian Countries / - Budimpešta, 1998

Skup
XXth Danubian Countries

Mjesto i datum
Budimpešta, Mađarska, 05.1998

Vrsta sudjelovanja
Pozvano predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Natural rubber

Sažetak
Rubber network formation is know to be dependent on the nature of the crosslinking agent. In turn, crosslink density produced does decisively determine rubber physicochemical properties and service life. The amounts of sulphur accelerators added should be balanced accordingly to the expected rates of sulphur donation reactions to double bonds of polyisoprene elastomer. Three systems of accelerations were applied to natural rubber, NR vulcanisations. First, zinc diethyldithiocarbamate, ZDEC ; second, zinc mercaptobenzothiazole, ZMBT ; and a third, i.e. the combination of ZMBT and diphenylguanidin, DPG. Thermo-oxidative ageing in hot air was carried out afterwards and the crosslink-density determinations of the aged samples were studied. Two methods were used, stress-strain measurements as well as equilibrium swelling.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

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