Very high friction eleastomer formulation for use in static brak

Details Very high friction eleastomer formulation for use in static brak Very high friction eleastomer formulation for use in static brak

1989-03-28

1992-03-03

Michl, Paul R.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

523150, 523152, 523153, 523155, 523156, 523157, 524519, C08L 1100

Patent

active

050933884

ABSTRACT:
A high friction brake shoe formulation having a high static friction coefficient in shear of about 1.5 and low adhesion to materials having microscopic pores therein in contact with said brake shoe formulation which comprises a mixture of about 75 phr of neoprene W rubber and about 25 phr of neoprene WHV rubber; a first curing system comprising about 1 phr of a fatty acid, about 5 phr of ZnO, and about 1-3 phr of MgO; and a second curing system comprising about 1.25 phr of sulfur and about 0.6 phr of a sulfur accelerator; together with about 50 phr of a reinforcing agent of N555 or N650 carbon black.

REFERENCES:
patent: 3601227 (1971-08-01), Burch
patent: 3655827 (1972-04-01), Finlay
patent: 4444293 (1984-04-01), Paul et al.
patent: 4485216 (1984-11-01), Musch
Morton, Rubber Technology Second Edition, pp. 52, 53, 58, 59, 64 and 191, Van Nostrand Reinhold Co., N.Y., 1973.

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