PROCESS FOR PREPARING RUBBER MIX Russian patent published in 1994 - IPC

FIELD: cable industry. SUBSTANCE: oil-filled industrial carbon is used. Ordinary industrial carbon is oxidized with 30-60 wt parts of a softening agent per 100 weight parts of industrial carbon. Transformer, machine or other types of oil as well as paraffin and other softening agents are used in rubber mixes. Diene rubber, desired additives and oil-filled carbon are charged in a single stage and stirred for 4-6 min. The mix components are used in the following amounts (weight parts): 100 diene rubber; 11.6-21.3 desired additives; 40-85 carbon with 30-60 wt parts of oil. The vulcanizate from a mixture based on nyrite containing oil-filled carbon and 40 wt parts of transformer oil have the following properties: the tensile strength is 14.0-16.2 MPa; the elongation is 412-510%; the residual deformation is 5-12% ; the Current plasticity is 0.52-0.66. The temperature of the mix being discharged is 90-96 C. EFFECT: improved properties of the rubber mix. 5 tbl