The preparation of white carbon black is a complex process involving chemical reactions, physical treatment, and fine processing, and its technological level directly affects the quality and performance of the product. At present, the main preparation methods of white carbon black include gas phase method, precipitation method and sol gel method. Each method has its own characteristics and is suitable for the needs of different fields.


Qi phase method: a symbol of high-end quality
Gas phase white carbon black is produced through high-temperature gas phase reaction, with high purity, small particle size, large specific surface area, excellent reinforcement performance and transparency. It is widely used in high-end rubber, plastics, coatings and other fields. However, this method has high energy consumption and high cost, which limits its large-scale application.


Precipitation method: the cost-effective choice
Precipitation method white carbon black is prepared by precipitation reaction using sodium silicate and acid as raw materials. This method has easy access to raw materials, simple process, low cost, moderate product performance, and is widely used in the middle and low-end markets such as tires and shoe materials. With the continuous advancement of technology, the performance of precipitated white carbon black is gradually improving to meet the needs of more high-end applications.


Sol gel method: exploration of new technologies
Sol gel method is a new method to prepare silica. By controlling the transition process from sol to gel, silica materials with specific morphology and structure can be prepared. This method has unique advantages in the preparation of nanoscale, porous or functionalized white carbon black, opening up new avenues for the application of white carbon black in fields such as biomedicine and catalyst carriers.


Process optimization and future trends
With the increasingly strict environmental regulations and intensified market competition, the optimization of the preparation process of white carbon black has become a focus of industry attention. In the future, green, efficient, and intelligent preparation technologies will become mainstream, promoting the development of the white carbon black industry towards higher quality, lower cost, and more environmentally friendly directions.