To provide a rubber composition for a railway vehicle cushion rubber used as a raw material of a railway vehicle cushion rubber, which is improved in flame retardancy and normal-state physical properties of rubber such as modulus and tensile strength in a well-balanced manner.SOLUTION: The rubber composition for a railway vehicle cushion rubber contains a polychloroprene rubber and a natural rubber as rubber components and further contains an intumescent type phosphate as a flame retardant. When the total amount of the rubber components is 100 pts.wt., the rubber composition preferably contains 50-100 pts.wt. of the polychloroprene rubber and 0-50 pts.wt. of the natural rubber and preferably contains 5-100 pts.wt. of the phosphate.SELECTED DRAWING: None

    【課題】難燃性と、モジュラスや引張強度などのゴム常態物性とをバランス良く向上した鉄道車両用緩衝ゴムの原料となる鉄道車両用緩衝ゴム用ゴム組成物を提供すること。【解決手段】ゴム成分として、ポリクロロプレンゴムおよび天然ゴムを含有し、さらに難燃剤としてイントメッセント系のリン酸塩を含有する鉄道車両用緩衝ゴム用ゴム組成物。ゴム成分の全量を100重量部としたとき、ポリクロロプレンゴムを50〜100重量部および天然ゴムを0〜50重量部含有することが好ましく、リン酸塩を5〜100重量部含有することが好ましい。【選択図】 なし


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    Title :

    RUBBER COMPOSITION FOR RAILWAY VEHICLE CUSHION RUBBER


    Additional title:

    鉄道車両用緩衝ゴム用ゴム組成物


    Contributors:

    Publication date :

    2019-01-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B61F Untergestelle für Schienenfahrzeuge, z.B. Fahrgestellrahmen, Drehgestelle oder Anordnungen der Radsätze , RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS / F16F SPRINGS , Federn



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