Process for molding a brake lining friction product

Details Process for molding a brake lining friction product Process for molding a brake lining friction product

1983-03-15

1984-02-21

Hall, James R.

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

With reshaping or surface embossing of formed article

264120, 264122, D04H 316

Patent

active

044329229

ABSTRACT:
A process for molding a friction material for use as brake lining in automobiles, trucks, buses or similar vehicles. The brake lining contains no more than traces of asbestos and utilizes the mineral vermiculite as a basic constituent. The formulation of the brake lining comprises a non-fibrous natural or synthetic mineral or mineral-like material which on being compressed at ambient temperatures and at pressures of 1700 to 2600 p.s.i. has significant green strength in the order of 2 to 25 p.s.i. and also has appropriate thermal resistance, frictional properties, and shear and flexural strengths, together with a thermosetting resin as the basic components together with other organic and inorganic materials as friction modifiers and fillers. The mineral preferably comprises vermiculite, and together with the resin comprises preferably about 35% to 95% by weight of the brake lining formulation. The ratio by weight of resin to vermiculite is preferably in a range having a upper limit not exceeding about 1.2/1 to 1.5/1 and a lower limit not less than about 0.15/1.

REFERENCES:
patent: 3354248 (1967-11-01), Haas et al.
patent: 4085179 (1978-04-01), Hillhouse et al.
patent: 4268467 (1981-05-01), Wagner

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