BANDE DE ROULEMENT POUR PNEUMATIQUE RENFORCEE D'UNE SILICE A TRES BASSE SURFACE SPECIFIQUE
    1.
    发明公开
    BANDE DE ROULEMENT POUR PNEUMATIQUE RENFORCEE D'UNE SILICE A TRES BASSE SURFACE SPECIFIQUE 审中-公开
    轮胎胎面加强了二氧化硅低的比表面

    公开(公告)号:EP1404755A1

    公开(公告)日:2004-04-07

    申请号:EP02751056.9

    申请日:2002-06-21

    摘要: The invention relates to a tyre tread comprising an elastomer composition reinforced with silica and made from at least (pce = parts by weight per 100 parts of diene elastomer): (i) a diene elastomer; (ii) by way of a reinforcing filler, more than 80 pce of an inorganic filler consisting wholly or partly of a silica (called LS) having the following characteristics: (a) a BET specific surface area of between 50 and 100 m2/g; (b) an average particle size d¿w? of between 50 and 350 nm; (iii) a coupling agent that is used to link the reinforcing inorganic filler and the diene elastomer; (iv) a sulphur-based vulcanisation system. Preferably, said LS silica has a deagglomeration speed α that is greater than 5.10 -3 νm-1/min (measured with the deagglomeration test using ultrasound). In comparison to a standard tyre tread for green tyres reinforced with a silica having a higher specific surface area, the inventive tyre tread is provided with an improved performance trade-off in terms of wear resistance, rolling resistance, adhesion and drift thrust.

    BANDE DE ROULEMENT POUR PNEUMATIQUE RENFORCEE D'UNE SILICE A BASSE SURFACE SPECIFIQUE
    8.
    发明授权
    BANDE DE ROULEMENT POUR PNEUMATIQUE RENFORCEE D'UNE SILICE A BASSE SURFACE SPECIFIQUE 有权
    轮胎胎面加强了二氧化硅低的比表面

    公开(公告)号:EP1419195B1

    公开(公告)日:2010-04-21

    申请号:EP02740742.8

    申请日:2002-06-21

    摘要: The invention relates to a tyre tread comprising an elastomer composition reinforced with an inorganic filler and made from at least: (i) a diene elastomer; (ii) by way of a reinforcing inorganic filler, more than 80 pce of a silica having a low specific surface area and the following characteristics: (a) a BET specific surface area of less than 130 m2/g; (b) an average particle size d¿w? of between 30 and 300 nm; (iii) a coupling agent that is used to connect the reinforcing inorganic filler and the diene elastomer; (iv) and a vulcanisation system comprising sulphur, a vulcanisation accelerator and, by way of a vulcanising activator, between 0.5 and 1.5 pce of zinc. Preferably, said silica has a deagglomeration speed α that is greater than 5.10?3 νm1¿/min (measured with the deagglomeration test using ultrasound). In comparison to a standard tyre tread for green tyres reinforced with a silica having a higher specific surface area, the inventive tyre tread is provided with an improved performance trade-off (wear resistance/rolling resistance/wet surface adhesion). Owing to the low zinc level, an increase in induction times during vulcanisation can be mitigated when a silica having a low specific surface area is used.

    BANDE DE ROULEMENT POUR PNEUMATIQUE RENFORCEE D'UNE SILICE A BASSE SURFACE SPECIFIQUE
    9.
    发明公开
    BANDE DE ROULEMENT POUR PNEUMATIQUE RENFORCEE D'UNE SILICE A BASSE SURFACE SPECIFIQUE 有权
    BANDE DE ROULEMENT POUR PNEUMATIQUE RENFORCEE D'UNE SILICE BASSE SURFACE SPECIFIQUE

    公开(公告)号:EP1419195A1

    公开(公告)日:2004-05-19

    申请号:EP02740742.8

    申请日:2002-06-21

    摘要: The invention relates to a tyre tread comprising an elastomer composition reinforced with an inorganic filler and made from at least: (i) a diene elastomer; (ii) by way of a reinforcing inorganic filler, more than 80 pce of a silica having a low specific surface area and the following characteristics: (a) a BET specific surface area of less than 130 m2/g; (b) an average particle size d¿w? of between 30 and 300 nm; (iii) a coupling agent that is used to connect the reinforcing inorganic filler and the diene elastomer; (iv) and a vulcanisation system comprising sulphur, a vulcanisation accelerator and, by way of a vulcanising activator, between 0.5 and 1.5 pce of zinc. Preferably, said silica has a deagglomeration speed α that is greater than 5.10?3 νm1¿/min (measured with the deagglomeration test using ultrasound). In comparison to a standard tyre tread for green tyres reinforced with a silica having a higher specific surface area, the inventive tyre tread is provided with an improved performance trade-off (wear resistance/rolling resistance/wet surface adhesion). Owing to the low zinc level, an increase in induction times during vulcanisation can be mitigated when a silica having a low specific surface area is used.

    摘要翻译: 本发明涉及一种轮胎胎面,其包含用无机填料增强的弹性体组合物并且至少由以下物质制成:(i)二烯弹性体; (ii)借助于增强无机填料,制备多于80重量份的具有低比表面积和以下特征的二氧化硅:(a)小于130m 2 / g的BET比表面积; (b)平均颗粒尺寸d?w? 在30和300nm之间; (iii)用于连接增强无机填料和二烯弹性体的偶联剂; (iv)和硫化体系,所述体系包含硫磺,硫化促进剂和硫化活化剂,所述硫化活化剂为0.5-1.5重量份的锌。 优选地,所述二氧化硅具有大于5.10±3νm1/ min(通过使用超声的解聚试验测量)的解聚速度α。 与用具有较高比表面积的二氧化硅增强的生轮胎的标准轮胎胎面相比,本发明的轮胎胎面具有改进的性能折衷(耐磨性/滚动阻力/湿表面附着力)。 由于锌含量低,当使用具有低比表面积的二氧化硅时,硫化过程中诱导时间的增加可以减轻。