| 摘要 |
PURPOSE:To provide the rubber compsn. having improved tensile strength and wear resistance and suitable for use as a material for tires, by using, as a main component, a wet master batch obtd. by dispersing modified carbon black in a diene rubber latex. CONSTITUTION:The surface of a reinforcing carbon black having a nitrogen adsorption surface area of 70-200m<2>/g and a DBP absorption of 80-130ml/100g is treated with low-temperature plasma to prepare a modified carbon black having a hydrophilicity level of 2-4. 30-150pts.wt. said modified carbon black as a water slurry is dispersed in 100pts.wt. (on a solid basis) rubber latex com prising natural rubber or a diene rubber component such as styrene/butadiene copolymer rubber to prepare a wet master batch. Said master batch is used as a main component to obtain the desired rubber compsn.
|
