Friction lining material

Details Friction lining material Friction lining material

1982-07-29

1983-06-14

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

521 54, 523155, 523218, 524407, 524450, C08J 514

Patent

active

043884237

ABSTRACT:
A friction material for use as a 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 together with a small quantity of non-asbestos fibers and acicular mineral particles 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: 2012259 (1935-08-01), Denman
patent: 2874034 (1959-02-01), Rieke
patent: 3267048 (1966-08-01), Horste et al.
patent: 3307969 (1967-03-01), Quinn
patent: 3948830 (1976-04-01), Donnelly et al.

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