Masterbatch with pigment requirements

Masterbatch used pigment, we must pay attention to the pigment and plastic raw materials, additives and the relationship between the selection of the following points.

(1) Pigment can not react with resin and various additives, solvent resistance, small mobility, good heat resistance and so on. In other words, masterbatch can not participate in a variety of chemical reactions. Such as carbon black can control the curing reaction of polyester plastic, it can not be added in the polyester carbon black pigment.

As the plastic molding process temperature is higher, so the color should be in the molding heating temperature conditions do not decompose discoloration. General inorganic pigments heat resistance is better, organic pigments and dyes heat resistance is poor, this should be in the choice of pigment varieties caused enough attention.

(2) color dispersion, coloring should be good. Pigment dispersion is uneven, it will affect the appearance of the product performance; pigment coloring force is poor, will increase the amount of toner, material costs. The same pigment in different resins in the dispersion and color strength is not the same, so the choice of pigment should pay attention to this point.

Pigment particle size and dispersion are also related to the smaller pigment particles, the better the dispersion, color strength is also strong.

(3) should understand the other properties of color materials, such as for the use of food, children's toys on the plastic products, require colorants should be non-toxic; for electrical appliances in plastic products, electrical insulation should be selected good pigment; For outdoor plastic products, should be selected weather resistance and good performance of color materials.