| 摘要 |
PURPOSE: Provided is a natural rubber blend containing silica and polyethylene glycol, which has improved mechanical properties, reinforced heat-stability and tearing strength, and high rotation-resistance. CONSTITUTION: The natural rubber blend contains 100phr of a natural rubber as a raw rubber, 60-80phr of the silica, 4.8-6.4phr of a silane coupling agent, and about 2phr of the polyethylene glycol as a vulcanizing auxiliary, wherein the silica has BET of 168-212m¬2/g, CTAB of 130-159, DOP of 205-267cc/100g, a viscosity of 7500-36000mPa.s, pH of 6.2-6.8, and D50 of 2.6-9.6 micrometer. |
