White carbon black: the "invisible engine" of green tires In the wave of low-carbon transformation in the global automotive industry, white carbon black has become the core material driving the green revolution in the tire industry due to its unique physical and chemical properties. As an amorphous fine powder of silicon dioxide (SiO ₂), white carbon black helps "green tires" achieve a dual breakthrough in energy conservation, emission reduction, and safety by reducing tire rolling resistance and improving wet skid resistance.


Technological Breakthrough: From Laboratory to Industrialization
Traditional tires use carbon black as a reinforcing agent, which can improve wear resistance but significantly increase rolling resistance, leading to increased fuel consumption. The application of white carbon black is achieved through its nanoscale porous structure (particle size 5-50nm) and surface silanol activity, forming a three-dimensional network structure in the rubber matrix, which reduces internal friction and enhances mechanical properties. Experimental data shows that tires formulated with highly dispersed white carbon black and silane coupling agents can reduce rolling resistance by 20% -30%, improve fuel economy by 5% -7%, and increase wet skid resistance by more than 10%.


Industrial pattern: China leads global transformation
As the world's largest producer of white carbon black, China's production will exceed 1.8 million tons in 2023, accounting for over 40% of the global total. Leading enterprises such as Quecheng Shares and Yuanxiang New Materials have reduced production costs by 15% -20% through the integrated industrial chain layout of "sodium silicate white carbon black". Driven by policies, chemical towns such as Shandong and Jiangsu are accelerating the elimination of outdated production capacity and promoting circular economy models. For example, Black Cat Group uses rice husk ash to extract white carbon black, reducing raw material costs by 30% and carbon emissions by 40%.


Future trend: from "reinforcement" to "functionalization"
With the ultimate pursuit of range and lightweight in new energy vehicles, white carbon black is evolving from a single reinforcing agent to a multifunctional material. For example, K200 type nano white carbon black can significantly improve the thermal stability of lithium-ion battery separators through surface hydrophobic modification; After the composite of gas-phase white carbon black and graphene, it can be used to prepare conductive rubber, and the electrical resistivity can be reduced to below 10 Ω· cm. It is predicted that by 2030, the demand for high-end white carbon black in the field of new energy will jump from the current 15% to 35%, and the market size will exceed 15 billion yuan.