| 摘要 |
The compsns. contain, by wt. 100 pts. rubber, 70-100 pts. C black, 30-70 pts. aromatic oil, a vulcanisation system contg. up to 1.5 (0.2-0.8) pts. elementary S and up to 3 pts. s-lphenamide-, thiazole-, guanidine- and/or thiuram-type vulcanisation accelerators. A mixt. for S-free vulcanisation can contain up to 6 pts. thiuram-type accelerator. The rubber can be smoked sheets, light or brown crepe rubber, natural rubber extended directly by 15-50 pts. aromatic oil, synthetic butadiene-styrene rubber extended directly by 15-40 pts. aromatic oil, cis-polybutadiene- or cis-polyisoprene rubber also extended directly by 15-40 pts. aromatic oil. The C black has particle size 175-350 Angstroms, specific surface 62-135 sq.m/g, oil index 120-140, H2 content 0.2-0.34 wt.%, O2-content 0.27-1.45 wt.%. The aromatic oil has relative density 0.96-1.075, viscosity (14.1-50.1) times 10 power minus 6 sq.m/sec. at 98.9 deg.C and aniline pt. 10-50 deg.C. - The compsns. can also be used for renewing worn tyre treads.(0/0) |
