Plastic black is a black powder made from carbon used in industries such as coatings, plastics and rubber. It has the advantages of excellent blackness, low scattering and high heat resistance. During the production process, sometimes the problem of insufficient blackness occurs. So, how to improve the blackness of plastic carbon black?
A common method is to increase the amount of carbon black. This can increase the impact of carbon black on the color of the plastic and increase the blackness. However, using too much carbon black increases costs and may affect other properties of the plastic. Therefore, a balance needs to be struck when increasing the amount of carbon black.
Another approach is to change the quality of the carbon black. High-quality carbon black has higher blackness, so choosing high-quality carbon black can increase the blackness. The particle size of carbon black also affects blackness. Fine-grained carbon black has higher blackness, so choosing fine-grained carbon black can increase the blackness.
Another way is to change the way carbon black is added. Typically, carbon black is added by mixing raw plastic materials. However, direct mixing may result in uneven dispersion of carbon black and insufficient blackness. Therefore, you can consider adding a certain amount of carbon black slurry to the plastic before mixing. This can make the carbon black disperse more evenly and improve the blackness.
Blackness can also be increased by changing mixing temperature and time. High temperature and long time mixing can make the carbon black disperse more evenly and improve the blackness.
Blackness can also be increased by changing the paint formulation. Adding some black pigments, such as iron black or chrome black, to the paint can increase the blackness.
To improve the blackness of plastic carbon black, it can be achieved by increasing the amount of carbon black, changing the quality of carbon black, changing the method of adding carbon black, changing the mixing temperature and time, changing the coating formula, etc. These methods all have certain effects, but they need to be considered comprehensively based on specific circumstances.