High carbon friction material
AssigneeThe Bendix Corporation
InventorsBruce W. Klein, Michael G. Jacko
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Abstract
A high carbon friction material for use as a friction lining in a brake or clutch. The friction material consists of a combination of fibers selected from a group including glass, asbestos or other mineral fibers, metal powders, friction modifiers and carbon or graphite particles retained in a matrix created by a thermoset phenolic resin to establish a friction lining. The selected fibers and carbon or graphite particles in the friction material jointly combine to establish a substantially uniform wear rate and coefficient of friction up to 500.degree. C. when the friction lining engages a corresponding mating surface.
Claims12
A friction material consisting of a mixture of:
- 20-33% by weight of fibers selected from a group consisting of glass fiber, asbestos and other mineral fibers;
- 4-22% by weight of metal or metal oxide particles;
- 0-7% by weight of organic modifiers;
- 7-24% by weight of inorganic modifiers;
- 18-34% by weight of carbon or graphite particles;
- and
- 8-14% by weight of a thermosetting phenolic resin,
- said thermosetting phenolic resin being cured to form a matrix for holding the selected fibers, metal or metal oxide particles, the organic and inorganic modifiers and carbon or graphite particles in a fixed relationship, said carbon or graphite particles modifying the abrasive effect of said fibers on a mating surface to prevent degradation thereof.
Dependencies are inferred from the claim text.