The scientific name of precipitated white carbon black is precipitated water and silica, also known as activated silica. It has a high specific surface area, high structural degree, and high activity. As an important functional filler in the rubber industry, it can not only significantly improve the performance of rubber products, but also effectively reduce production costs.
After adding a small amount of white carbon black to ordinary rubber, the mechanical strength, wear resistance, and aging resistance of the product are significantly improved. In practical applications, over 65% of precipitated white carbon black is used in the rubber industry, mainly in footwear and tires. After using white carbon black for rubber components in shoe materials, the hardness, tensile strength, tear strength, wear resistance, slip resistance, and adhesion of the product are significantly improved, especially in light colored, colored semi transparent, and transparent shoe soles (including outsole, midsole, and perimeter rubber), which have a wide range of applications. Adding an appropriate amount of white carbon black to tire tread rubber and carcass rubber can help improve tear resistance and adhesive properties between rubber and cord.
1、 The role in production
Reinforcement effect: Nanoscale particles form chemical bonds with rubber molecules, improving material strength and hardness
Plasticizing effect: reduces the amount of rubber adhesive used and lowers formula costs
Performance improvement: improve wear resistance (extend product life), tear resistance and aging resistance
Function improvement: increase grip, reduce rolling resistance (reduce energy consumption)
2、 The method of directly reducing production costs
1. Reduce raw material consumption
① White carbon black can replace 30% carbon black while maintaining or enhancing product performance.
② Reduce the amount of rubber adhesive by 5-15% through plasticizing effect.
③ The price of precipitated white carbon black is only 1/3-1/4 of that of gas-phase method (7000-25000 yuan/ton).
2. Optimize production process
① Modified precipitated white carbon black can reduce the Mooney viscosity of engineering tire rubber by 25%.
② The twin-screw mixer combined with 3% Si69 coupling agent can reduce the aggregate size to below 1 μ m.
③ Surface treatment reduces the amount of silane modifier used, further reducing costs.
3、 Cost comparison (for reference only)
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4、 Optimization
1. Formula optimization: According to product performance requirements, balance the proportion of white carbon black and other fillers, and modify with silane coupling agent Si69. Although it increases the unit consumption cost by 5%, the comprehensive production cost decreases by 12%.
2. Process improvement: Adopting segmented mixing process to improve the dispersibility of white carbon black, optimizing vulcanization conditions, and fully utilizing the reinforcing effect of white carbon black.
3. Alternative solution: Products with low performance requirements can be partially replaced with cheaper fillers (such as calcium carbonate), or recycled rubber can be used in combination with white carbon black to further reduce costs.
4. Source selection: Choose cost-effective precipitation method white carbon black suppliers and recommend photovoltaic silicon by-product white carbon black.
Rubber enterprises can effectively reduce production costs and enhance market competitiveness while ensuring product quality. In practical applications, it is recommended to choose the most suitable application plan for white carbon black based on specific product types and performance requirements.