CORD-RUBBER COMPOSITE MATERIAL AND TIRE

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 compositio...

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Hauptverfasser:	SHIBATA HIROKAZU, GOHARA SAKURAKO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, ORYARNS DEVICES OR ARRANGEMENTS RELATED TO TYRES MECHANICAL FINISHING OF YARNS OR ROPES METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING TYRE CHANGING OR REPAIRING TYRE INFLATION USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS VEHICLE TYRES VEHICLES IN GENERAL WARPING OR BEAMING YARNS YARNS OR THREADS
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Beschreibung
Zusammenfassung:	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