Colorants plastics additives

plastic additive colorants effects: the use plastic parts to meet aesthetic requirements,

and special color to give the plastic optical properties, and sometimes also to improve the

weather resistance of plastics, often adding a coloring agent.
Type:
1 to give the plastic color toner: organic pigments , inorganic pigments and dyes as

colorants.
(2) to give special optical properties of the plastic optical flakes are: (aluminum,

copper, copper alloys, etc.) ① pearlescent pigment: the plastic was pearlescent; ②

phosphorescent pigment: After exposure to light, the light in the dark; ③ fluorescent

pigment: can emit and absorb different wavelengths

Light, thus forming a glow flashing, but not in the dark light. Colorants should have

performance: they should have strong coloring, bright color, good dispersion

characteristics, not with other components from a chemical change, and with heat, light and

other properties. Colorant

An amount of usually 0.01% to 0.02% of plastic.
The method of adding pigment plastics:
1 using an extrusion granulator, mixing after extrusion - cut granulation, mixing a good

resin material has been used for mass production of the same color product.
2 with color masterbatch added to the resin and mix well, if plastics injection molding

machine; used for small-volume, multi-variety production. Disadvantages are: mixing is not

uniform, different batches of the product there is color.
3. The powdered dye added to the resin color, mixed, if the injection machine plasticizing;

used for small-volume, multi-variety production.
Disadvantages are: mixing is not uniform, different batches of the product there is color.
Current injection has been widely used plastics coloring masterbatch for coloring, long

before the injection molding, in the qualities of plastic particles in a proportion of

concentrated masterbatch mix (the masterbatch) can be. Masterbatch is a colorant, a

dispersant, the carrier and other components by

Specific pre-dispersion granulation process and prepared. A high content of the colorant to

be colored particulate plastic material and is easy to uniform mixing between the

particles, mixing does not produce dust, good working conditions, and because of the

masterbatch containing dispersant additives, coloring agents

Easily dispersed to be colored plastics, injection molding before having to go through an

extruder melt mixing granulation process, coloring effects, coloring costs are also lower,

is a worthy application coloring process.