First, the weight of the black mother
高品质的黑色masterbat的重量ch and inferior black masterbatch are different. Take the black masterbatch with the same volume of high-quality and inferior masterbatch and weigh them in the same container. Inferior black mother is heavier. Because the inferior black mother is mixed with some impurities, it can be heavy!
Burning black mother
Use a lighter to burn the high-quality and inferior black mother. After observing the powder, you can find that the high-quality black mother powder is less, showing dark black, and the poor black mother will find a smell after burning , There are more powder, the color is light black!
Third, polish the black mother after burning
Put the burnt black mother on A4 paper and circle with your fingers, you can see the high-quality black mother, with clear marks and darker colors. The inferior black mother color is dull and has no trace, and the blackness is relatively light, indicating that the amount of carbon black is small!
Fourth, observe the black mother after grinding
High-quality black mother has good blackness, sufficient brightness, high density, and bright color. Inferior black masterbatch has more impurities, so the black color is lighter, the concentration is lower, and there is no gloss.