초록 ▼

Paper base friction material in the form of a porous, flexible interfelted fibrous sheet comprised of a mixture of 25 to 65 percent cellulose fibers, 5 to 20 percent carbon fibers, 5 to 20 percent flame-resistant organic fibers, fillers, and an oil resistant elastomeric sizing. The friction material

Paper base friction material in the form of a porous, flexible interfelted fibrous sheet comprised of a mixture of 25 to 65 percent cellulose fibers, 5 to 20 percent carbon fibers, 5 to 20 percent flame-resistant organic fibers, fillers, and an oil resistant elastomeric sizing. The friction material also includes a synthetic resin binder which may be incorporated during preparation of the sheet or subsequently. In use, the paper base friction material is bonded to a supporting member, preferably metal, whereby it is useful as a friction element particularly in oil, such as in automotive automatic transmissions.

대표청구항 ▼

Friction material in porous, flexible, interfelted fibrous sheet form comprising a mixture of from about 25 to about 65 percent cellulose fibers, from about 5 to about 20 percent of carbon fibers, from about 5 to about 20 percent of flame-resistant organic fibers, up to about 30 percent of graphite

Friction material in porous, flexible, interfelted fibrous sheet form comprising a mixture of from about 25 to about 65 percent cellulose fibers, from about 5 to about 20 percent of carbon fibers, from about 5 to about 20 percent of flame-resistant organic fibers, up to about 30 percent of graphite particles, up to about 30 percent of diatomaceous earth particles, and a small amount of a sizing effective to increase the tensile strength of said sheet, said percentages being by weight based on the total weight of said sheet.