摩擦材用造粒物の製造方法、摩擦材用造粒物、摩擦材の製造方法および摩擦材

Method for producing granule for friction material, granule for friction material, method for producing friction material and friction material

Abstract

【課題】 原材料の偏析・分離の原因となる予備成形工程を省略することができ、かつ成形体内での造粒体界面の残存を抑制し、品質の優れる摩擦材を与えることのできる摩擦材用造粒物の製造方法、摩擦材用造粒物および摩擦材を提供する。 【解決手段】 摩擦調整用粒状材料と樹脂結合材とを含む混合物を、水溶性ないし水分散性結合剤含有液の存在下に流動層で造粒し、摩擦材用造粒物を得る摩擦材用造粒物の製造方法、粒径が100〜2,000μm、安息角が40°以下、圧縮破壊強度が10MPa以下である摩擦材用造粒物、および該摩擦材用造粒物を用いて得られた摩擦材である。 【選択図】 なし
<P>PROBLEM TO BE SOLVED: To provide a method for producing granules for a friction material by which a preforming process which sometimes causes segregation and separation of raw materials can be omitted, and the friction material from which the remaining of interfaces of granulated bodies in a molded article is reduced and which has excellent quality can be provided; and to provide the granules for the friction material and the friction material. <P>SOLUTION: The granules for the friction material are produced by granulating a mixture including a friction adjusting granular material and a resin binder in a fluidized bed under a presence of a liquid including a water-soluble or water-dispersible binder. The granules have particle sizes of from 100 to 2,000 μm, an angle of repose of 40° or less, and a compression breakage strength of 10 MPa or less. The friction material is obtained by using the granules for the friction material. <P>COPYRIGHT: (C)2008,JPO&INPIT

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Cited By (1)

    Publication numberPublication dateAssigneeTitle
    JP-2011001987-AJanuary 06, 2011Akebono Brake Ind Co Ltd, 曙ブレーキ工業株式会社摩擦材及びその製造方法