The rubber powder processed from waste rubber products can be added to the tire again to achieve the purpose of reducing the cost of raw materials, increasing the mileage of the tire, and realizing 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 also different. Waste tire rubber powder is generally used in tire production. Today, I will share with you the selection and dosage of rubber powder in each part of the tire.
1. Application of rubber powder in tire tread
Adding 5-15 parts of rubber powder with a particle size of 60-120 mesh to the tire tread can take advantage of the interface characteristics of the rubber powder and rubber blend to improve the dynamic fatigue resistance of the blend and reduce the tire The heat generated during driving achieves the purpose of prolonging the service life of the tire. After the amount of rubber powder exceeds 15 parts, the tensile strength, tensile stress and wear resistance of the tire tread rubber will be significantly reduced, so the amount of rubber powder needs to be controlled within 15 parts.
In actual production, the mechanical strength of the tire tread rubber is not high, and the amount of rubber powder can be appropriately increased to reduce more costs.
2. Application of rubber powder in tire sidewall
Tire sidewalls can resolve the impact and impact caused by uneven road surfaces, and have stricter requirements on the flexibility and aging resistance of the rubber compound. Generally, natural rubber is the main component and butadiene rubber is combined. Reasonable use of rubber powder 2YLYY426 in the tire sidewall rubber can significantly improve the flexural resistance of the sidewall rubber; the appropriate amount of white carbon black can further improve the overall physical performance of the tire sidewall. In actual production, mixing 10-15 parts of fine rubber powder with a suitable vulcanization system can prepare tire sidewall rubber with good comprehensive performance.
3. Application of rubber powder in tire cushion belt
The amount of vulcanized rubber powder mixed in the tire cushion belt is relatively high. Some tire manufacturers even use 100% vulcanized rubber powder when producing non-motor vehicle rubber tires or motor vehicle tire cushion belts.
The rubber powder retains the elasticity of the rubber, and there are still unsaturated double bonds in the molecular structure of the matrix rubber that have not participated in the crosslinking or vulcanization reaction. The vulcanization crosslinking agent can still continue to participate in the vulcanization crosslinking reaction; therefore, the rubber powder is directly added with sulfur and The accelerator can produce products with higher hardness than the original rubber powder. In actual production, the amount of activated rubber powder is larger in each part of the tire; the amount of rubber powder in non-motor vehicle rubber tires is more, and the editor will continue to share with you later.
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