Fibrous base material for a friction lining material comprising less fibrillated aramid fibers and synthetic graphite
AssigneeBorg-Warner Automotive, Inc.
InventorsRobert C. Lam, Marc A. Yesnik
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Abstract
The present invention relates to a fibrous base material comprising less fibrillated aramid fibers, synthetic graphite and at least one filler material, and a non-asbestos friction material produced therefrom. In certain embodiments, the fibrous base material is impregnated with a phenolic or phenolic-base resin material, including, for example, a mixture of a phenolic resin and a silicone resin.
Claims22
A fibrous base material for use in a non-asbestos friction material comprising a plurality of less fibrillated aramid fibers having a freeness of at least about 530 on the Canadian Standard Freeness (CSF) index;
- synthetic graphite;
- and, at least one filler material.
A process for producing a non-asbestos friction material comprising mixing less fibrillated aramid fibers having a freeness of at least about 530 on the Canadian Standard Freeness (CSF) index with synthetic graphite and at least one filler to form a fibrous base material, impregnating the fibrous base material with a phenolic resin or modified phenolic resin, and thereafter curing the impregnated fibrous base material at a predetermined temperature for a predetermined period of time.
Dependencies are inferred from the claim text.