Advantages of carbon black dispersants
Carbon black dispersants have significant advantages in material processing. By improving the dispersibility of carbon black,
the overall performance of materials is improved. The following are the core advantages of carbon black dispersants:
1. Improve material performance
Enhance mechanical properties:
Evenly dispersed carbon black particles can more effectively enhance the mechanical properties of the matrix (such as rubber, plastic),
such as improving tensile strength, tear resistance and wear resistance.
Case:In tire rubber, carbon black dispersants can improve the wear resistance of vulcanized rubber by 20%-30%.
Optimize optical properties:
Carbon black dispersants can improve the blackness and hiding power of coatings, reduce color differences, and make ink printing
more uniform and glossier.
Data: After adding dispersants to water-based coatings, hiding power can be increased by 15%-25%.
Improve conductivity:
In conductive plastics, dispersants make carbon black particles evenly distributed, forming a continuous conductive network and
reducing resistivity.
Effect: The resistivity of conductive plastics can be reduced to 10³-10⁴ Ω·cm.
2. Optimize processing performance
Reduce system viscosity:
Evenly dispersed carbon black particles reduce friction between particles, reduce system viscosity, and improve fluidity.
Case: In plastic extrusion processing, reduced viscosity can increase extrusion speed by 10%-20%.
Improve production efficiency:
Dispersants reduce blockage and wear during processing, extend equipment life, and reduce energy consumption.
Data: Rubber mixing time can be shortened by 15%-30%.
3. Enhance product stability
Prevent agglomeration and sedimentation:
Dispersants stabilize carbon black particles through steric hindrance or electrostatic repulsion to prevent reagglomeration
during storage or use.
Effect: The coating system has no obvious sedimentation or flocculation within 6 months.
Extend product life:
The stable dispersion state keeps product performance consistent and extends service life.
Case: The antistatic performance of conductive plastics can last for more than 1 year.
4. Environmental protection and cost-effectiveness
Environmental protection advantages:
Some dispersants (such as water-based dispersants) can replace organic solvents, reduce VOC emissions, and comply with
environmental regulations.
Application: The use of dispersants in water-based inks reduces VOC emissions by more than 50%.
Cost-effectiveness:
By improving material performance and processing efficiency, reducing raw material waste and rework, and reducing overall costs.
Data: The defective rate of rubber products can be reduced by 10%-15%.
5. Adaptability and versatility
Wide adaptability:
Applicable to different substrates (such as water-based, solvent-based, thermoplastic resins) and carbon black types (such as furnace
and tank carbon black).
Case: Successfully applied in coatings, inks, rubber, plastics and other fields.
Multifunctional integration:
Some dispersants have multiple functions such as wetting, dispersing, and stabilizing, simplifying formula design.
Effect: Reduce the amount of additives and improve formula stability.
Summary
Carbon black dispersants have significantly improved the application effect of carbon black in various fields by improving material
performance, optimizing processing performance, enhancing product stability, environmental protection and cost-effectiveness, as well
as adaptability and versatility. Its core value lies in: "Evenly dispersed, doubled performance", and it is an indispensable key auxiliary agent
in material processing.
