Three-roller Machine Disperses Carbon Black Through Grinding

The dispersion properties of carbon black have a great impact on carbon black and products. Usually, carbon black is dispersed by grinding it with a three-roller machine. Commonly used dispersion media include glass beads, steel beads and ceramic beads.
The working principle of the three-roller machine for grinding carbon black is to rely on shear force and pressure to overcome the cohesion of the carbon black to disperse and crush the carbon black. When using it, relevant adjustments should be made to the three-roller machine to ensure efficient and smooth grinding.
1. The distance between the rollers is adjusted according to production needs. After being fixed, make it stable so that the pressure between the rollers reaches a constant state.
2. The temperature of the roller should be controlled well, and the constant temperature should not be high or low during operation, otherwise it will affect the viscosity of the system and thus the dispersion of carbon black.
3. If the product requires high blackness, high gloss, and high dispersion and is produced in different batch numbers, the surface of the three-roller machine must be carefully cleaned.
When using a three-roller machine, the materials need to be premixed, and the amount of dispersion medium must be controlled. Too much will increase the wear between the media, resulting in a reduction in the particle size of the dispersion medium; too little will increase the distance between the dispersion media. , reducing carbon black dispersion efficiency.