To solve the problem in which: when a regenerated carbon black (regenerated CB) is used for a coat rubber of a tire reinforcement layer for tire recycling, high speed durability and rolling resistance are deteriorated.SOLUTION: A cord-rubber composite material includes a cord and a rubber composition which covers the cord. The rubber composition includes a diene rubber, a carbon black (CB) and a regenerated CB in which: a difference (ΔDBP) between DBP oil absorption of the regenerated CB and compress DBP oil absorption is less than 20 ml/100 g; a ratio N2SA/IA of nitrogen adsorption specific surface area N2SA (unit m2/g) of the regenerated CB to iodine adsorption IA (unit mg/g) is 0.8 or more and less than 2.0; and a total amount of the CB and the regenerated CB is 30 - 80 pts.mass with the diene rubber 100 pts.mass.SELECTED DRAWING: Figure 1

    【課題】タイヤリサイクルのために再生カーボンブラック(再生CB)をタイヤ補強層のコートゴムゴムに使用した場合は、高速耐久性および転がり抵抗性が低下するという問題点がある。【解決手段】コードおよび前記コードを被覆するゴム組成物を含有するコード-ゴム複合材料であって、ゴム組成物は、ジエン系ゴム、カーボンブラック(CB)および再生CBを含み、前記再生CBのDBP吸油量と圧縮DBP吸油量の差(ΔDBP)が20ml/100g未満であり、前記再生CBの窒素吸着比表面積N2SA(単位m2/g)と沃素吸着量IA(単位mg/g)の比であるN2SA/IAが0.8以上2.0未満の範囲にあり、前記CBおよび前記再生CBの合計の総量が、前記ジエン系ゴム100質量部に対し、30~80質量部であることによって上記課題を解決した。【選択図】図1


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    Title :

    CORD-RUBBER COMPOSITE MATERIAL AND TIRE


    Additional title:

    コード-ゴム複合材料およびタイヤ


    Contributors:

    Publication date :

    2024-04-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen / 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 / D02G CRIMPING OR CURLING FIBRES, FILAMENTS, YARNS, OR THREADS , Kräuseln oder Texturieren von Fasern, Fäden, Garnen oder Zwirnen



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