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Maksyuta, N. V.; Suprun, V. Ya.; Opeida, I. A.; Turovskii, N. A.

doi:10.1023/a:1012405413649

Cited by 2 publications

(1 citation statement)

References 2 publications

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“…Influence of composition of the crosslinking system on the activation energy (E a ) of the crosslinking process of SBRrozpadowi na wolne rodniki pod wp³ywem dodatku czwartorzêdowych soli amoniowych[12,18]. Ich zastosowanie (TOAB, TBAB) w po³¹czeniu z CHP spowodo-wa³o znaczne (ponad dwukrotne) obni¿enie poziomu energii aktywacji reakcji sieciowania poni¿ej wartooeci E a tego procesu wobec uk³adów redoks typu CHP+ oraz sól metalu o zmiennej wartooeciowooeci.Korzystaj¹c z wyznaczonej energii aktywacji obliczylioemy sta³e szybkooeci reakcji, a nastêpnie czasy wulkanizacji w temp.…”

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Crosslinking of styrene butadiene rubber with redox systems at low temperatures

Pingot¹,

Pingot²,

Zaborski³

2010

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Sieciowanie kauczuku butadienowo-styrenowego w obni¿onej temperaturze pod wp³ywem uk³adów redoks Streszczenie-W celu okreoelenia mo¿liwooeci sieciowania kauczuku butadienowo-styrenowego (SBR) w obni¿onej temperaturze u¿yto szeregu uk³adów redoks ró¿ni¹cych siê miêdzy sob¹ rodzajem utleniacza oraz reduktora; jako czynnik redukuj¹cy w tych uk³adach zastosowano sole metali o zmiennej wartooeciowooeci. Rozwi¹zanie to pozwoli³o na znaczne zmniejszenie wartooeci energii aktywacji procesu sieciowania, co umo¿liwi³o prowadzenie procesu sieciowania nawet w temp. 80°C. Zbadano wp³yw sk³adu uk³adów redoks na w³aoeciwooeci reometryczne, przebieg sieciowania, gêstooeae sieci, a tak¿e na w³aoeciwooeci mechaniczne i na proces starzenia pod wp³ywem UV wulkanizatów nienape³nionych i nape³nionych krzemionk¹. Wykazano istnienie mo¿liwooeci sieciowania elastomerów SBR w obni¿onej temperaturze równie¿ za pomoc¹ uk³adów zawiera-j¹cych wodoronadtlenek kumenu (CHP), w których typowy reduktor zast¹piony sol¹ oniow¹bromkiem tetrabutyloamoniowym (TBAB) lub tetraoktyloamoniowym (TOAB). S³owa kluczowe: uk³ady redoks, kauczuk butadienowo-styrenowy, sieciowanie, kinetyka, temperatura procesu, wulkanizaty, w³aoeciwooeci u¿ytkowe, starzenie. CROSSLINKING OF STYRENE-BUTADIENE RUBBER WITH REDOX SYSTEMS AT LOW TEMPERATURES Summary-The possibilities of crosslinking styrene butadiene rubber (SBR) at low temperatures with a series of redox systems made up of different types of reducing and oxidizing agents have been explored (Table 1). Transition metal salts were used as reducing agents. A pronounced decrease in the activation energy of the crosslinking process (Fig. 1) was achieved by adopting this method, therefore the crosslinking reaction could be performed at temperatures as low as 80°C. The influence of the composition of the redox system on rheometrical properties (Table 2), the crosslinking process (Figs. 2 and 3), crosslinking density (Figs. 4-6, Table 3) as well as on mechanical properties was determined. Moreover, the ageing process of unfilled and filled vulcanizates with silicates under UV irradiation was evaluated (Table 4, Figs. 7 and 8). The possibility of crosslinking SBR at low temperatures with the application of systems containing cumene hydroperoxide, in which the reducing agent had been replaced by an ammonium salt-tetrabutylammonium bromide (TBAB) or tetraoctylammonium bromide (TOAB) was also explored.

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Crosslinking of styrene butadiene rubber with redox systems at low temperatures

Pingot¹,

Pingot²,

Zaborski³

2010

Polimery

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Experimental investigation on activity of cumene hydroperoxide and selected ionic liquids in butadiene rubber vulcanization

2018

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In this work, cross‐linking at low temperature (90°C) of butadiene rubber (BR) using a vulcanizing system based on a hydroperoxide and ionic liquids (ILs) has been evaluated. Composites of BR with cumene hydroperoxide (CHP) and selected ILs have been prepared and tested. In order to elucidate the influence of novel systems on the cross‐linking as well as on the properties of the final product, BR composites have been characterized by different techniques, that is, rheometrical properties, cross‐linking density determination, as well as mechanical strength and weather aging resistance studies. Herein, the influence of weather aging on the properties of the samples is performed and further discussed. CHP and ILs were found to be an effective peroxide system, which enabled to decrease the energy consumption during vulcanization as well as the amount of applied CHP. Taking into account cross‐linking efficiency, system containing 1,3‐dimethylimidazolium methyl sulfate (IS), or tetrahexylammonium tetrafluoroborate (AB) seems to be the most active.

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Cited by 2 publications

References 2 publications

Crosslinking of styrene butadiene rubber with redox systems at low temperatures

Crosslinking of styrene butadiene rubber with redox systems at low temperatures

Experimental investigation on activity of cumene hydroperoxide and selected ionic liquids in butadiene rubber vulcanization

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