Application of rubber powder in tire production

The rubber powder processed from waste rubber products can be re-added to the tires to reduce the cost of raw materials and improve the mileage of tires, so as to realize the recycling of waste rubber resources. In actual production, there are differences in the variety and amount of rubber powder used in different parts of the tire, and the amount of different types of rubber powder in the same tire part is not the same.

1. Rubber powder in the tire tread

Adding 5-15 parts of rubber powder with particle size between 60-120 mesh in the tread of load tires can make use of the interfacial characteristics of rubber powder and rubber blended together to improve the dynamic fatigue resistance of blended rubber, reduce the heat generated during the driving of tires, and achieve the purpose of extending the service life of tires. After the amount of rubber powder exceeds 15 parts, the tensile strength, constant tensile stress and wear resistance of tire tread rubber will drop significantly, so the amount of rubber powder needs to be controlled within 15 parts.

2. Rubber powder in tire sidewall

Tire sidewall can resolve the impact and influence brought by uneven road surface, the rubber flex resistance, aging resistance requirements are more stringent. Generally with natural rubber as the main, paraben rubber with. The reasonable use of rubber powder in the tire sidewall rubber can significantly improve the flex resistance of the sidewall rubber; with the right amount of silica can further improve the physical properties of the tire sidewall. In actual production, mixed with 10-15 parts of fine rubber powder, with the appropriate vulcanization system can prepare a good overall performance of the tire sidewall rubber.

3. Rubber powder in tire cushion belt

Vulcanized rubber powder in the tire cushion with a high amount of blending, some tire manufacturers produce non-motorized rubber tires or motor vehicles with inner tube tires cushion belt or even 100% use of vulcanized rubber powder.

The rubber powder retains the elasticity of rubber, and there are still unsaturated double bonds in the molecular structure of the base rubber that are not involved in the cross-linking or vulcanization reaction, and the vulcanization cross-linking agent can still continue to participate in the vulcanization cross-linking reaction; therefore, the rubber powder can be directly added with sulfur yellow and accelerator to produce products with higher hardness than the original rubber powder.

When you are planning to start a tyre recycling business and want to buy tyre recycling equipment, please contact Harvest Machinery first. We have done an in-depth study of tire recycling markets. Also, we have successful cases in many countries, such as South Africa, the Philippines, the UK, Romania, etc.

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