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What is Plastic pigments and its application?

Views: 3     Author: Site Editor     Publish Time: 2021-08-26      Origin: Site


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What is Plastic pigments and its application?


Plastic pigments are pigments that can change the color of plastic raw materials.


There are three main methods for coloring plastic pigments. The first is to use powdered pigments to color directly, the second is to mix with plasticizers, etc. to form a paste, and then mix, and the third is to mix with masterbatch.

Plastic pigments

The most basic requirements for pigments used in plastics: temperature resistance, non-migration, easy dispersion, and lightfastness.


Inorganic pigments are metal oxides. Generally speaking, they are resistant to high temperature and do not migrate and are suitable for almost all plastics. However, they have low tinting strength, incomplete color types, low cost performance, and some contain heavy metals.


Oil-soluble pigments are cost-effective and have a complete range of colors. They are suitable for PS, POM, ABS, and PC. Few parts are suitable for PA.


There are many kinds of organic pigments, various colors, high cost performance, and different performances. According to the characteristics of the pigments, it is suitable for various plastics, mainly used for PP PE PVC PU PS


Inorganic pigments for plastics:


1. Titanium dioxide, divided into anatase type and rutile type, has high whiteness and excellent performance, suitable for various plastics.


2. Iron oxide pigments and environmentally friendly pigments can basically pass the SGS test and do not contain heavy metals. Suitable for plastics are iron red, iron orange, iron yellow, and zinc iron yellow. The color is darker.


3. Chrome green, chrome yellow, medium chrome yellow, molybdenum chrome red, cadmium yellow, cadmium orange, and cadmium red are bright in color and high in stability, but they all contain heavy metals. It is not recommended for use under special circumstances.


4. Cobalt blue, bismuth yellow, titanium nickel yellow, cerium red, there is no relevant prohibition standard for this kind of pigment. But the price is higher.

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