Aramid containing friction materials

Details Aramid containing friction materials Aramid containing friction materials

1981-09-15

1983-02-15

Jacobs, Lewis T.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

523153, 523155, 523157, 524439, 524440, 524 35, C08L 6106

Patent

active

043742114

ABSTRACT:
The addition of aramid polymer pulp fiber to non-asbestos type friction material compositions results in a marked improvement in the flexural strength and structural integrity of preforms used in the manufacture of friction elements. The consequent handling characteristics of the preform lead to significant improvements in ease of manufacturing of the friction element.

REFERENCES:
patent: 3856120 (1974-12-01), Kwolek et al.
patent: 4125496 (1978-11-01), McGinnis
patent: 4130537 (1978-12-01), Bohrer
patent: 4137214 (1979-01-01), Sochalski
patent: 4219452 (1980-08-01), Littlefield
"DuPont Develops Pulp Form of `KEVLAR` for Asbestos Replacement Applications", dated Feb. 23-26, 1981.
Modern Plastics, "Fibrous Reinforcements: Alive with Product-Improvement Technology", Jul. 1981, pp. 44-47.

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