Borgwarner Inc.

Wanjun Liu

Feng Dong

Robert C Lam

Jason Bares

A friction material presents a friction generating surface and a bonding surface facing opposite said friction generating surface. The friction material includes structural fibers, friction particles, polyvinyl alcohol fibers, and a resin. A method of forming the friction material is also disclosed. The method comprises the steps of: combining the structural fibers, the friction particles, and the polyvinyl alcohol fibers having an average diameter of less than about 11 &#x3bc;m, an average length of less than about 4 mm, an average denier of less than about 1, to form a substrate material; impregnating the substrate material with the resin; and curing the resin to form the friction material.

Friction material

A friction material presents a friction generating surface and a bonding surface facing opposite the friction generating surface. The friction material includes an organopolysiloxane resin, a plurality of fibers, and a plurality of friction particles. The organopolysiloxane resin includes siloxy units independently represented by the following formula: (RSiO) and/or (RSiO); wherein each Rand Ris independently selected from a monovalent hydrocarbon group having from 1 to 20 carbon atoms.

A friction material comprises a base and a porous friction generating layer penetrating into and integral with the base. The base presents a bonding surface. The porous friction generating layer presents a friction generating surface facing opposite the bonding surface of the base. The porous friction generating layer comprises fibers and friction adjusting particles, and about 30 to about 95% of a total surface area of the fibers is in contact with the friction adjusting particles. A curable resin is dispersed throughout the porous friction generating layer and the base.

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Troy, MI, United States of America

Wanjun Liu