C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
400/1100
C08L 7/00 (2006.01) C08K 7/12 (2006.01) C08L 61/06 (2006.01) C08L 63/00 (2006.01)
Patent
CA 2007873
Disclosed is an organic friction material compo- sition useful to produce any kind of friction linings, such as brake linings or clutch linings, that have to be capable of withstanding high operating temperatures and pressures for substantial periods of time. The composition comprises a thermosetting resin having heat resistant properties, and a fibrous-like synthetic forsterite obtained by calcination of chrysotile asbestos fibers at a temperature of from 650°C to 1450°C, the synthetic forsterite having an MgO: SiO2 ratio lower than 1.1, a raw loose density of from 3 to 40 pounds per cubic foot, a thermal conductivity K factor of from 0.25 to 0.40 BTU. in/hr. °F.ft2 and a fusion point of from 1600° to 1700°C, the weight ratio of resin to synthetic forsterite ranging from 0.25 to 0.70. The composition also comprises friction additives in such an amount as to adjust the friction and wear properties of the material to some predetermined values, and, if desired, other additives and fillers, with the proviso that the ratio of the total weight of all of these additives and fillers to the total weight of the composition is equal to or lower than 0.55.
Delvaux Pierre
Desrosiers Luc
Roy Alain
Cerminco Inc.
Robic
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