Plastic Color Master Batch is a new type of colorant for polymer materials, also called Pigment Preparation. Masterbatch is mainly used in plastics. Masterbatch is composed of three basic elements: pigment or dye, carrier and additive. It is an aggregate obtained by uniformly attaching an extraordinary amount of pigment to the resin, which can be called Pigment Concentration. Therefore, its coloring power is higher than the pigment itself. When processing, a small amount of masterbatch is mixed with uncolored resin to achieve the colored resin or product with the designed pigment concentration.
Basic ingredients
1.Pigments or dyes
Pigments are divided into organic pigments and inorganic pigments
Common organic pigments include: phthalocyanine red, phthalocyanine blue, phthalocyanine green, fast red, macromolecular red, macromolecular yellow, permanent yellow, permanent purple, azo red, etc. Common inorganic pigments include: titanium dioxide, carbon black, iron oxide red, iron oxide yellow, etc.
- Carrier resin
It is the base material of masterbatch. Special masterbatch generally chooses the same resin as the product resin as the carrier, and the compatibility of the two is the best, but the fluidity of the carrier should also be considered. - Dispersant
It promotes the uniform dispersion of pigments and no longer agglomerates. The melting point of the dispersant should be lower than that of the resin, and it has good compatibility with the resin and good affinity with the pigment. The most commonly used dispersants are: polyethylene low molecular wax and stearate. - Additives
Such as flame retardant, brightening, antibacterial, antistatic, antioxidant and other varieties, unless the customer requires it, the masterbatch generally does not contain the above additives.
Advantages of color masterbatch
- Make the pigment have better dispersibility in the product. The pigment must be refined during the production process of the masterbatch to improve the dispersibility and coloring power of the pigment. The carrier of the special masterbatch is the same as the plastic type of the product, which has good matching. After heating and melting, the pigment particles can be well dispersed in the plastic of the product.
- It is conducive to maintaining the chemical stability of the pigment. If the pigment is used directly, the pigment will absorb water and oxidize due to direct contact with the air during storage and use. After making the masterbatch, the resin carrier isolates the pigment from the air and moisture, which can keep the quality of the pigment unchanged for a long time.
- Ensure the stability of the color of the product. The masterbatch particles are similar to the resin particles, which are more convenient and accurate in measurement. They will not adhere to the container during mixing, and the mixing with the resin is also more uniform, so the addition amount can be guaranteed to be stable, thereby ensuring the stability of the product color.
- Protect the health of operators. Pigments are generally powdery, which are easy to fly when added and mixed. If inhaled by the human body, it will affect the health of the operator.
- Keep the environment clean.
- Easy to use
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