Requirements for the color situation of color pigments for masterbatches

Color masterbatch has the following advantages:

Make the pigment have better dispersion in the products Color masterbatch production process shall be refined to improve the dispersion and coloring power of the pigment. The carrier of special color masterbatch is the same as the plastic species of the products and has good matching, and it can be heated and melted. The pigment particles can be well dispersed in the product plastics after heating and melting. Color pigment used in masterbatches, must pay attention to the matching relationship between the color pigment and plastic raw materials, additives, and its selection points are described below.

(1) The color pigment can not react with resin and various auxiliaries, strong solvent resistance, small migration, good heat resistance and so on. That is to say, the color masterbatch can not participate in various chemical reactions. For example, carbon black can control the curing reaction of polyester plastics, so it can't be added to polyester with carbon black material.

PLASBLAK?PE6021 contains a high concentration of carbon black, which not only provides excellent coloring strength and covering ability, but also maintains the mechanical properties of basic plastics. With the different quality of recycled resin, the amount of masterbatch can be reduced by 10-15% compared with the current products, and the same coloring effect can be achieved. It can maintain the mechanical properties of basic plastics, such as tension strength and Since the temperature of plastic products molding processing is high, the colorant should not decompose and change color under the condition of molding heating temperature. General inorganic pigment heat resistance is better, organic pigments and dyes heat resistance is worse, this point should be in the choice of color varieties to attract enough attention.

(2) The dispersion and coloring power of the pigment should be good. Color dispersion is not uniform, will affect the appearance of the product performance; color pigment coloring power is poor, will increase the amount of color pigment, material costs. The same pigment in different resins dispersibility and coloring power is not the same, so in the choice of pigment should pay attention to this point. The particle size of the pigment is also related to the dispersibility, the smaller the particle size of the pigment, the better the dispersibility and the stronger the coloring power.

(3) should understand the other properties of the pigment, such as for food, children's toys on the plastic products, masterbatch requirements are more stringent; used in electrical plastic products, should choose a good electrical insulation of the pigment; used in outdoor plastic products, should choose a good weather aging performance of the pigment and so on.