| abstract |
The invention discloses a tire sidewall rubber composition with low hysteresis loss and improved appearance and a preparation method thereof. The rubber composition comprises: natural rubber and cis-butadiene rubber as main raw materials; Side resin, appearance-improving protective wax, vulcanizing agent, accelerator and other auxiliaries, etc. In the present invention, after the natural rubber and carbon black are pre-mixed into a masterbatch, other components are combined to act synergistically and mixed to improve the distribution of carbon black in the natural rubber/butadiene rubber combined ratio, so that the distribution of carbon black is improved. More uniform, reduce the flocculation of the rubber during the parking process, and improve the uniformity and smoothness of the rubber. The rubber composition of the invention has good comprehensive properties such as processability and mechanical properties, can reduce the compression heat generation and rolling resistance of the sidewall rubber, improve the heat aging resistance and fatigue resistance of the sidewall rubber, and improve the appearance quality of the tire , make the surface smooth and smooth, and prolong the service life of the tire. |