Masterbatch has certain requirements on the color used. Let's take a look at the key points of masterbatch selection for masterbatch!
(1) It should be understood that other properties of colorants, such as plastic products used in food and children's toys, should be non-toxic; for plastic products used in electrical appliances, colorants with good electrical insulation should be selected; For outdoor plastic products, colorants with good weathering resistance should be selected.
(2) The dispersibility and coloring power of the colorant should be good. When the color material is unevenly dispersed, it will affect the appearance performance of the product; when the coloring power of the color material is poor, the amount of color material will increase and the material cost will increase. The dispersibility and tinting strength of the same colorant in different resins are not the same, so pay attention to this when selecting the colorant; the particle size of the colorant is also related to the dispersibility. The smaller the particle size, the better the dispersion. The coloring power is also strong.
(3) The coloring material cannot react with the resin and various auxiliary agents, and has strong solvent resistance, small mobility, and good heat resistance. That is to say, the 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; because the molding temperature of plastic products is high, the color material should not decompose and discolor under the molding heating temperature condition, and the general inorganic pigment is resistant. The heat is good, and the heat resistance of organic pigments and dyes is poor. This should be paid enough attention when selecting the colorant varieties.