In an earlier work [1] it was noted that, during the vulcanisation of solution-and emulsion-polymerised butadiene-styrene rubber (BSK) in certain sulphur systems, shungite has an activating effect. These data were obtained on model unfi lled vulcanisates in order to single out the role of shungite as fi ller in rubber compounds in combination with carbon black. The same role of shungite with carbon black was addressed in references [2] and [3].
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