| abstract |
The invention discloses a solution-polymerized styrene-butadiene tread rubber and a mixing process thereof. The tread rubber comprises the components by weight: 40-220 parts of a solution-polymerized styrene-butadiene rubber, 10-60 parts of natural rubber, 5-20 parts of tread rubber powder, 1-4 parts of stearic acid, 1-2 parts of sulphur powder, 20-40 parts of white carbon black, 5-10 parts of carbon black, 2-30 parts of an aromatic hydrocarbon oil, 1-8 parts of zinc oxide, 4-7 parts of an anti-aging agent, 1-4 parts of a pine tar oil, 1-4 parts of an accelerant, 0.2-1 part of an anti-reversion agent and 2-5 parts of a bonding agent. A three-stage mixing process is employed. The tread rubber has good anti-aging performance and high wear-resistant property, can prolong service life of an automobile tyre, and has a high safety factor. |