Advics Co., Ltd.

Shusuke Suzuki

Masaaki Kobayashi

Naoki Odani

Katsuya Okayama

Masato Nishioka

Yasutoshi Kitahara

A friction member according to an embodiment is a friction material having a copper content of less than 5 wt %, the friction material including a titanic acid salt having a content of 1 wt % or more and 8 wt % or less, a cryolite powder having a content of 0.5 wt % or more and 5 wt % or less, and an iron oxide powder having a median diameter of 15 to 30 μm (D50) and a content of 1 wt % or more and 10 wt % or less.

Friction material and friction material composition

A brake pad according to an embodiment includes a friction material containing copper at 0.5 wt % or less, a back plate, and an under-layer material laminated between the friction material and the back plate and having an average loss modulus of 500 MPa or more at &#x2212;50&#xb0; C. to 0&#xb0; C. in a bending mode.

Brake pad and under-layer material composition

A friction material which comprises a fibrous base, a binder, a lubricating material, an organic filler, and an inorganic filler, the friction material having a copper element content of 0.5 wt % or less with respect to the whole friction material, wherein the lubricating material comprises graphite having an average particle diameter of 10.0 &#x3bc;m or smaller and the inorganic filler includes barium sulfate, which comprises small-diameter barium sulfate having an average particle diameter of 1.5 &#x3bc;m or smaller and a purity of 95.0% or higher.

Friction material

Provided is a method of producing a friction material that can prevent occurrence of dust generation and segregation at the time of mixing raw materials of the friction material and that is resistant to deterioration of the friction material even when a phenol resin is employed as a binder and that also allows the production process to be effected safely and speedily and at a low cost. The method includes a mixing step (A) for stirring the raw materials for the friction material containing a high-ortho phenol resin, slaked lime and 3-10 wt. % of water and a forming step (B) for forming a mixture powder obtained from the mixing step (A) to a desired shape at room temperature.

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Nagakute, Japan

Shusuke Suzuki