The application of gas-phase white carbon black in ink mainly achieves precise control of ink properties through its nanoscale structure and surface characteristics.
1、 Core functions and mechanisms of action
1. Liquidity optimization
During static state, increase ink viscosity to prevent pigment settling, while dynamic shear reduces low viscosity to improve transferability; Solve the problems of ink flying and smudging in high-speed printing, and improve printing uniformity.
2. Optical performance adjustment
As a matting agent to reduce glossiness and achieve a matte effect (such as artistic prints); Maintain high transmittance in transparent ink to avoid fogging.
3. Stability enhancement
Inhibit ink delamination and extend storage period; Improve weather resistance and prevent fading caused by UV irradiation.
2、 Actual application scenarios
1. News ink: Adjust leveling, adapt to high-speed rotary printing, and improve the clarity of newspaper text.
2. UV Ink: Control ink layer thickness, enhance 3D relief effect, and surface treatment of packaging materials.
3. Metal ink: prevents the precipitation of metal pigments, maintains uniform flicker, and is suitable for high-end gift packaging printing.
3、 Key technical points
1. Dispersion process
① High speed shearing equipment (such as grinding machines) should be used to avoid nanoparticle agglomeration;
② Hydrophobic products (such as HB series) are more suitable for non-polar solvent systems.
2. Add proportional control
① The conventional addition amount is 0.5% -3.0%, and excessive addition can lead to a sharp increase in viscosity;
② The optimal ratio needs to be determined through rheological curve testing.
4、 Market price trends and challenges
1. High end models (such as 200 specific surface area): priced between 25000 and 28000 yuan per ton, suitable for high-performance ink systems to optimize optical and rheological properties.
2. Low end models: priced between 18000 and 20000 yuan per ton, suitable for cost sensitive basic ink applications.
3. The current market prices remain stable overall, with minimal fluctuations since early 2025, mainly influenced by raw material costs and process purity. Gas phase products are relatively resilient in price due to the demand for high performance.
4. Trend: The increasing demand for high transparency digital inkjet ink is driving the application of hydrophobic white carbon black;
5. Challenge: The dispersion stability of nanoparticles still requires process optimization to avoid clogging of printing nozzles.