RUBBER MIXTURE Russian patent published in 1995 - IPC

FIELD: rubber industry. SUBSTANCE: rubber mixture has, mas. p.: chloroprene rubber of sulfur or combined regulation of polymerization 100; stearic acid 1.4-1.6; barium sulfide 4-6; technical carbon with specific geometric surface 90-100 m²/g/g 4-6, and aerosil modified with 15 wt.-% complex salt of ethylenebisdithiocarbamate zinc or ethylenebisthiuram disulfide 3-10. Vulcanization time of rubber mixtures at 150 C is 25-50 min. Rubber properties: tensile strength is 23-26 MPa, relative elongation is 475-500%, rubber mass change at swelling (20 C, 60 days) in "industrial-30" oil, in oleic acid, in concentrated hydrochloric acid, in water, and in glacial acetic acid (10 days) - 3.4-3.9; 7.8-9.4; 3.3-4.5; 8.2-11.8 and 8.8-12%, respectively. Rubber mixture is used for radiotechnical articles making. EFFECT: enhanced quality of rubber mixture. 2 tbl