To provide a rubber composition for railway vehicle buffer rubber, that serves as a raw material for railway vehicle buffer rubber, achieving both improvement of flame retardancy and reduction of smoke emission, while improving rubber normal physical properties such as moduli and tensile strength in a balanced manner.SOLUTION: A rubber composition for railway vehicle buffer rubber contains, as a rubber component, polychloroprene rubber and natural rubber. When the total amount of the rubber component is 100 pts.wt., an intumescent-based phosphate as a flame retardant is contained by 0.01-30 pts.wt. and a metal hydroxide is contained by 1-200 pts.wt.SELECTED DRAWING: None
【課題】モジュラスや引張強度などのゴム常態物性をバランス良く向上しつつ、難燃性の向上と発煙性の抑制とを両立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、前記ゴム成分の全量を100重量部としたとき、さらに難燃剤としてイントメッセント系のリン酸塩を0.01〜30重量部および金属水酸化物を1〜200重量部含有することを特徴とする鉄道車両用緩衝ゴム用ゴム組成物。【選択図】 なし
RUBBER COMPOSITION FOR RAILWAY VEHICLE BUFFER RUBBER
鉄道車両用緩衝ゴム用ゴム組成物
2019-05-16
Patent
Electronic Resource
Japanese
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 |