Color Masterbatch coloring is now the most commonly used plastic coloring method. The coloring agent dispersed in the carrier is simply mixed with the Color Masterbatch resin for the manufacture of plastic products. Pigment The color resin and the coloring agent are mixed and granulated into colored plastic, and are used in the molding process. Dry powder coloring: the powdery colorant and color resin evenly mixed directly after the manufacture of plastic products.
Color Masterbatch pigment selection
Different functions of Color Masterbatch, the choice of paint, the performance is different, the following were introduced under the Color Masterbatch how to choose the pigment:
Heat-resistant Color Masterbatch The choice of pigments, the most basic requirements of the polypropylene fiber production process can withstand the temperature, to maintain its performance stability. Temperature temperature is generally required for more than 270 ~ 280 ℃.
Dispersible Color Masterbatch pigment should be excellent in dispersibility, and in the Color Masterbatch to be dispersed evenly, and the use of the dispersant will not reduce the quality of polypropylene fiber, otherwise it can not produce good quality stained fiber, run is not stable , It is easy to break or produce abnormal fibers when drawing fibers.
Brightness Polypropylene liquid coloring has a variety of uses, which are used for bedspreads and knitted fabrics, requiring bright colors, because organic pigments are bright and bright, and easy to color, so that the use of organic pigments for the use of the above.
Light resistance In the light of the role of some pigments have a photosensitive effect, so that the coloring fiber fade and fragile, and the light resistance of the pigment is basically related to its chemical structure, so the production of Color Masterbatch should pay full attention to the light resistance of light, light Of the pigment need to be used, you can consider adding UV absorbers.
Pigments are usually powdery, add and mix easily when flying, the body will be inhaled after the impact of the health of the operator. Why is it often used as a color master and not a toner? What are the advantages of Color Masterbatch coloring relative to toner coloring?
1. make the pigment in the product has a better dispersion
Color Masterbatch production process to be refined on the paint to improve the pigment dispersion and color strength. The carrier of the special Color Masterbatch is the same as the plastic variety of the product, and has good matching. The pigment particles can be well dispersed in the plastic of the product after heating and melting.
2. It is beneficial to keep the chemical stability of the pigment
Direct use of paint, because the storage and use of the pigment in the process of direct contact with the air, the pigment will occur due to water absorption, oxidation and other phenomena, and made Color Masterbatch, the resin carrier will be pigment and air, water isolation, can make the quality of the pigment long change.
3. To ensure the stability of the product color
Color Masterbatch and resin particles similar to the measurement is more convenient and accurate, the mixture will not adhere to the container, and the resin mixture is more uniform, so you can ensure the stability of the added amount, so as to ensure the stability of the product color.
4. Protect the health of the operator
5. Keep the environment clean
Pigment can not react with resin and various additives, solvent resistance, small mobility, good heat resistance and so on. That is, Color Masterbatch can not participate in various chemical reactions. Such as carbon black can control the curing reaction of polyester plastic, it can not be added in the polyester carbon black pigment; plastic molding process due to the higher temperature, so the color should be in the molding heating temperature conditions do not disassemble discoloration, the general inorganic pigment resistance Thermal properties are better, organic pigments and dyes heat resistance is poor, this should be in the choice of pigment varieties caused enough attention.