Effect of carbon black dispersion on carbon black and other productsadmin
The dispersion properties of carbon black have a great influence on carbon black and products. Usually, the three-roll mill grinds carbon black for dispersion. Commonly used dispersion media are glass beads, steel beads, and ceramic beads.
The working principle of the three-roll mill grinding carbon black is to disperse and pulverize the carbon black by the shearing force and pressure against the cohesive force of the carbon black. When using, the three-roller should be adjusted to ensure efficient and smooth grinding.
1. The distance between the rollers is adjusted according to the production demand. After fixing, make it stable and let the pressure between the rollers reach a constant state.
2.The roller temperature control is good, to ensure that the constant temperature during work does not go up and down, otherwise it will affect the viscosity of the system and affect the dispersion of carbon black.
3. If the production product requires high blackness, high gloss, high dispersion and different batch numbers, carefully clean the surface of the three-roller.
When using the three-roller, it is necessary to pre-mix the materials, and to control the amount of the dispersion medium, too much will increase the wear between the media, resulting in a decrease in the particle size of the dispersion medium; too little will increase the spacing of the dispersion medium. , reduce the carbon black dispersion efficiency.