White carbon black for rubber tires

In the tire industry, white silica was mainly used for the belt layer of radial tires to enhance the adhesion of steel wires and rubber. There are also some tire companies that use heavy-duty radial tire treads to increase the puncture resistance and chipping resistance of the tread. Usually 10 to 15 servings. In the past ten years. Due to the increasingly strict environmental and energy saving requirements in Europe and North America; the use of silica in tire treads can significantly reduce the rolling resistance of the tires while maintaining good resistance to ice slip and wet skid. There is a slight decrease. The white carbon black manufacturer has introduced a “green tire” that is fully reinforced with white carbon black. Its rolling resistance is about 30% lower than that of a normal tire. In addition, silica is also used in tread rubber for winter (snow) tires and high performance tires. However, abroad. The price of silica is equivalent to 140% of carbon black. In addition to the increased cost of adding coupling agents and compound processing, the cost of rims is significantly increased and the antistatic properties of tires using silica alone are not good. therefore. At present, in the production of tires with low rolling resistance, the combination of carbon black and silica is used to achieve the best performance/cost effect. Currently. The domestic tire industry does not use much white carbon black. It is mainly used in the tread rubber of all-steel radial truck tires; it is generally used with 12~15 parts of white carbon black.

In foreign countries, white carbon black is mainly used in the manufacture of “green tires” for cars and winter tires. It is also used in load “green tires”, all-weather tires and construction machinery tires.

There are three basic requirements for tires. One is the grip on the wet road (slip resistance) or the better traction. To ensure the safety of the vehicle and personnel; second, the rolling resistance is small to save fuel and reduce emissions. In general, the tire rolling resistance is reduced by 3% by 4%, and the fuel consumption can be reduced by 1%. The tread-based rolling resistance is approximately 30% of the 50% load tire of a passenger car tire. Therefore, reducing the rolling resistance of the tread is an important way to save fuel. Third, the wear resistance is good. long lasting. In order to obtain the above properties, the application of silica, especially highly dispersible silica, in tread rubber is indispensable.

In foreign countries. White carbon black is mainly used for the tread of the radial rim of the radial car. The tire with higher dosage has lower rolling resistance and is called “green” tire. Secondly, it is used for the radial tread tread to improve the stab resistance. The amount of tie and anti-cracking is less, generally 10~15 parts, in order to further reduce the rolling resistance of the tire, in addition to increasing the amount of white carbon black in the tread rubber. White carbon black should also be used in other parts of the tire.