Fibrous material-based friction member
AssigneesShin-Etsu Chemical Co., Ltd., Gun Ei Chemical Industry Co., Ltd.
InventorsMitsuhiro Takarada, Hiroshi Ishii, Yutaka Arai, Takashi Hamano
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Abstract
The invention provides a friction member having high heat resistance and wearing resistance useful as a brake shoe or brake block in traffic vehicles and industrial machines. The friction member is prepared by consolidating a fibrous base material, e.g. asbestos, with a resinous binder which is a phenolic resin modified with an organopolysiloxane which characteristically comprises, in a molecule, at least one tetrafunctional siloxane unit of the formula SiO.sub.2 and/or at least one trifunctional siloxane unit of the formula R.sup.1 SiO.sub.1.5, in which R.sup.1 is a substituted or unsubstituted monovalent hydrocarbon group having 1 to 8 carbon atoms.
Claims6
A friction member formed by consolidating a fibrous base material with a resinous binder which comprises a phenolic resin modified with an organopolysiloxane comprising, in a molecule, at least one tetrafunctional siloxane unit expressed by the unit formula SiO.sub.2 or at least one trifunctional siloxane unit represented by the general unit formula R.sup.1 SiO.sub.1.5, in which R.sup.1 is a substituted or unsubstituted monovalent hydrocarbon group having 1 to 8 carbon atoms.
Dependencies are inferred from the claim text.