Provided is a rubber composition for a rim cushion that can provide satisfactorily maintained hardness, elongation at break, and wear resistance and improved low heat build-up and can provide these performances in a well-balanced and highly compatible manner. Silica having a CTAB adsorption specific surface area of 60 m2/g to 100 m2/g, carbon black having a CTAB adsorption specific surface area of 60 m2/g to 160 m2/g, and a sulfur-containing silane coupling agent are blended in diene rubber containing 35 mass% to 65 mass% of isoprene rubber and 35 mass% to 65 mass% of butadiene rubber. At least one type of terminal-modified butadiene rubber for silica is used as the butadiene rubber. A blended amount of the silica per 100 parts by mass of the diene rubber is 10 parts by mass or more and a total of the blended amount of the silica. A blended amount of the carbon black per 100 parts by mass of the diene rubber is more than 50 parts by mass. A product of a stress M100 at 100% elongation and hardness is set to 150 or more.
RUBBER COMPOSITION FOR RIM CUSHIONS
KAUTSCHUKZUSAMMENSETZUNG FÜR RIM-KISSEN
COMPOSITION DE CAOUTCHOUC POUR COUSSINS DE JANTE
19.02.2025
Patent
Elektronische Ressource
Englisch
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS |
Developments in use of rubber for automobile cushions
Engineering Index Backfile | 1933