| abstract |
Use, manufacture of friction elements for disc brakes of cars and trucks and motorcycles Summary of the invention: friction polymer press composition contains (in h) phenol-formaldehyde resin 100, nitrile butadiene rubber with acrylic acid nitrile units 27 - 35%, 13.3 - 83, 3, sulfuric vulcanizing group 6.7 - 50.0, asbestos-free fiber filling 73.3 - 516.7, bronze shavings 66.7 - 283.4. chopped brass wire or brass chips 40–183.3 graphite-containing filler 20–133.3, barite concentrate 20–200. alumina 40–250. trisulfur antimony 20–200. expanded vermiculite 6,7–66.7. monosubstituted chromium and aluminum phosphates 3.3 - 100. calcium hydroxide 6.7 - 83.3 and rubber crumb 3.3 - 33 3. Material characteristic: coefficient of friction at 350 °; C is 0.39 - 0.41. wear rate 19 1 material 0.43-0.57x1 (G m / J, friction coefficient stability 85.1 - 902% 3 tab |