Usually the amount of carbon black pigment added to black paint is more than 6%, and the amount of carbon black added to some black paints reaches 15%. Of course, this also depends on what kind of paint is produced and what kind of carbon black product is selected.
Generally speaking, if you choose ordinary pigment carbon black, you need to add more black carbon , but if you choose high blackness carbon black pigment, you need to add much less. In some paints, the amount of carbon black added can be as low as less than 5%. This is also the reason why many friends cannot get an accurate amount of carbon black added to the paint.
When choosing carbon black pigment for paint, you must pay attention to the blackness and tinting strength of the pigment black. These two carbon black indicators greatly affect the addition ratio of paint carbon black.
Blackness is the main indicator of carbon black for paint.
When coloring carbon black with black paint, the blackness of carbon black will be given priority; the second is the coloring strength of carbon black. This characteristic depends on the dosage ratio of carbon black and pigment and the carbon black. The nature of black carbon black, when the dosage ratio is constant, the tinting ability of a certain carbon black is its tinting strength, which is called tinting power in the paint industry.
