Requirements for color of color masterbatch

Color Masterbatch has the following advantages:

In order to make the pigment have better dispersibility in the products, the pigment must be refined during the production of color masterbatch to improve the dispersibility and coloring power of the pigment. The carrier of the special color masterbatch is the same as the plastic variety of the product, with good matching, and is heated and melted. After the pigment particles can be well dispersed in the plastic products. The color materials used in color masterbatch must pay attention to the matching relationship between color materials and plastic raw materials and additives. The key points for selection are as follows.

(1) Pigment can not react with resin and various additives, with strong solvent resistance, small mobility, good heat resistance, etc. In other words, color masterbatch cannot participate in various chemical reactions. For example, carbon black can control the curing reaction of polyester plastic, so carbon black material cannot be added to polyester.

PLASBLAK? PE6021 contains high concentration 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 the reconstituted resin, the amount of masterbatch can be reduced by 10-15% compared with the current product to achieve the same coloring effect. In order to maintain the mechanical properties of basic plastics, such as tensile strength, and due to the high molding processing temperature of plastic products, the color material shall not decompose and discolor at the molding heating temperature. Generally, inorganic pigments have good heat resistance, while organic pigments and dyes have poor heat resistance, which should be paid enough attention to when selecting pigment varieties.

(2) The dispersivity and coloring force of the pigment shall be good. The uneven dispersion of pigment will affect the appearance performance of the product; When the coloring power of the pigment is poor, the amount of pigment will increase and the material cost will increase. The dispersivity and tinting power of the same pigment in different resins are not the same, so you should pay attention to this when selecting pigment. The particle size of pigment is also related to its dispersibility. The smaller the particle size of pigment, the better the dispersibility and the stronger the coloring power.

(3) Other properties of color materials should be understood. For example, for plastic products used in food and children's toys, color masterbatch requirements are relatively strict; For plastic products used in electrical appliances, color materials with good electrical insulation should be selected; For outdoor plastic products, color materials with good weather aging resistance shall be selected.