Physico-mechanical properties of vulcanizates based on liquid-phase-filled with ozonated technical carbon rubber SKS-30 ARK

Currently, highly oxidized carbon black is in demand in the production of elastomers, since commercially produced furnace carbon black contains a small amount of oxygen-containing groups. A highly active filler can be obtained by modifying furnace carbon black using strong oxidizing agents such as nitric acid, ozone, hydrogen peroxide, etc. Using an elastomeric composition obtained by liquid-phase combining an aqueous dispersion of ozonolized carbon black P324 with styrene-butadiene rubber SKS-30ARK at the isolation stage made of latex using ultrasonic influence, reduces the mixing time at the stage of manufacturing rubber compounds by more than 51%. It has been shown that vulcanizates based on an elastomeric composition obtained by liquid-phase combining an aqueous dispersion of ozonolized carbon black P324 with SKS-30ARK rubber at the latex stage have higher strength properties in comparison with vulcanizates obtained by traditional “dry” mixing of rubber with furnace carbon black P324. It was revealed that emulsifying latex components adsorbed by nanodispersed carbon black contribute to the stabilization and dispersion of rubber compound ingredients. It has been established that the exclusion of stearin from the composition of rubber compounds not only reduces the production time of rubber compounds, but also contributes to the production of vulcanizates with higher strength properties, which apparently indicates an excessive content of emulsifying agents in the elastomeric composition. Achieving increased physical and mechanical properties of vulcanizates based on an elastomeric composition, obtained by liquid-phase combining an aqueous dispersion of ozonized carbon black P324 with SKS 30ARK rubber at the latex stage using ultrasonic influence, requires adjustment of the composition and vulcanization modes.