To provide a rubber member excellent in flame retardancy and capable of enhancing safety of a railway vehicle air spring.SOLUTION: The rubber member is used for a railway vehicle air spring and comprises: a rubber body mainly composed of rubber; and a flame-retardant coating layer covering the surface of the rubber body. The coating layer contains: a rubber component containing chloroprene rubber, natural rubber, butadiene rubber or a combination thereof; antimony trioxide; expanded graphite; and a bromine-based flame retardant. The content of the expanded graphite is 30 pts.mass or more based on 100 pts.mass of the rubber component in the coating layer. The rubber body does not contain expanded graphite.SELECTED DRAWING: None
【課題】難燃性に優れ、鉄道車両用空気ばねの安全性を高めることができるゴム部材の提供。【解決手段】鉄道車両用空気ばねに用いるゴム部材であって、ゴムを主成分とするゴム本体と、ゴム本体の表面を被覆する難燃性の被覆層とを備え、被覆層が、クロロプレンゴム、天然ゴム、ブタジエンゴム又はこれらの組合せを含有するゴム成分と、三酸化アンチモンと、膨張黒鉛と、臭素系難燃剤とを含み、被覆層中のゴム成分100質量部に対する膨張黒鉛の含有量が30質量部以上であり、ゴム本体が膨張黒鉛を含有しないゴム部材。【選択図】なし
RUBBER MEMBER AND COATING LAYER COMPOSITION OF RUBBER MEMBER
ゴム部材及びゴム部材の被覆層組成物
2022-02-22
Patent
Electronic Resource
Japanese
IPC: | B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / 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 / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen |
RUBBER MEMBER AND COATING LAYER COMPOSITION OF RUBBER MEMBER
European Patent Office | 2020
|European Patent Office | 2017
|European Patent Office | 2017
|European Patent Office | 2020
European Patent Office | 2018
|