Browsing by Author "Burmistrov, Kostiantyn S."

Now showing 1 - 2 of 2

Features of Elastomeric Compositions in the Presence of Regenerated Sunflower Oil Production Waste as Filler
(Oles Honchar Dnipro National University, Dnipro, 2015) Sokolova, Lina O.; Ovcharov, Valery I.; Toropin, Mykola V.; Burmistrov, Kostiantyn S.; Tyshchenko, Valeria O.
ENG: The paper investigates the peculiarities of the properties of elastomeric compositions based on butadiene-α-methylstyrene rubber of the Buna KER 1723 brand in the presence of regenerated sunflower oil production waste in comparison with the equal weight content (20.0 phr) of known mineral fillers. It has been shown that the hydrophobized products under study significantly affect the processibility of rubber compounds, the course of sulfur vulcanization at different temperatures, the level of rheokinetic characteristics, and the density of cross-links of elastomeric compositions. It has been established, that in terms of the rubber reinforcement factor, the spent adsorbent with 37 wt.% of the organic component (diatomite P), regenerated by two-stage washing with dichloroethane and petroleum ether, is superior to a product with 57 wt. % organic component (diatomite D), as well as chalk, but inferior to kaolin. Diatomite P can be recommended for use in industrial rubber formulations.
Use of a Wax-Containing Product from Sunflower oil Production Waste in Elastomeric Compositions
(Ukrainian State University of Science and Technologies, Dnipro, 2025) Sokolova, L.O.; Ovcharov, V.I.; Toropin, M.V.; Burmistrov, Kostiantyn S.; Tyshchenko, V.O.
ENG: To expand the range of ingredients based on renewable biological raw materials and enhance environmental protection, the effectiveness of the OS Wax product in elastomeric compositions was investigated. This product is derived from the waste generated during the winterization stage of sunflower oil production and, according to differential thermal analysis and IR spectroscopy, is a thermostable, non-volatile, long-chain saturated ester. It was found that incorporating 1.0–2.0 phr of OS Wax as a processing additive in elastomeric compositions for tire manufacturing initiates and enhances the sulfur vulcanization process, reduces heat generation, and positively influences the Payne effect due to its structure and the reduction of the effective activation energy of sulfur vulcanization. At the same time, the dynamic and physical-mechanical properties of the rubber remain comparable to those prepared with petrochemical microwaxes of the SVOZ-75 U grade.