How to pay attention to the color masterbatches with color pigments and raw materials, additives with the relationship between

Color masterbatches used in color pigments, must pay attention to the relationship between the color pigments and plastic raw materials, additives, the selection of the main points are described below.

1) 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, it 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.

2) The color pigment can't react with resin and various auxiliaries, strong solvent resistance, small migration, good heat resistance, etc.. That is to say, color masterbatch can not participate in various chemical reactions. For example, carbon black can control the curing reaction of polyester plastics, so it can not be added to the polyester carbon black material. As the temperature of plastic products molding and processing is high, so the color pigment should not decompose and change color under the condition of molding heating temperature. General inorganic pigment heat resistance is good, organic pigments and dyes heat resistance is poor, this point should be in the choice of color varieties to attract enough attention.

3) Should understand the other properties of the pigment, such as for food, children's toys on the plastic products, masterbatch requirements are 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.