A method to improve the coefficient of friction of a brake lining

摘要

1472692 Brake linings GOODYEAR TIRE & RUBBER CO 13 May 1975 [18 Oct 1974] 20071/75 Heading B5A [Also in Division C3] A dry organic mix, which is cured and shaped to form a brake lining, contains a finely divided phenolic resin which has been coated with 1 to 32 parts by weight of a latex before mixing with conventional brake lining materials such as asbestos, barytes, diatomaceous earth graphite bronze powder, silicon carbide, copper sulphide brass chips and iron oxide. Coating latices exemplified are butadiene/ styrene acrylonitrile. The brake lining composition is cured at a pressure of 250 to 50,000 lbs./ sq. inch and a temperature of 275‹ to 375‹ F. The linings may be given a post-curing bake.