1、 What is a color masterbatch?
Color master batch is a new colorant for polymer materials, also known as pigment preparation. It is composed of three basic elements: pigment or dye, carrier and additive. It is an aggregate obtained by uniformly loading super constant pigment or dye into resin, which can be called pigment concentration. Therefore, its coloring power is higher than that of pigment itself. To put it simply, the masterbatch is a kind of aggregate which is made by uniformly loading super constant pigment or dye in the resin.
2、 What are the basic components of Color Masterbatch?
The basic components of color masterbatch are as follows:
1. Pigment or dye
Pigments are divided into organic pigments and inorganic pigments
Common organic pigments are: phthalocyanine red, phthalocyanine blue, phthalocyanine green, fast red, macromolecular red, macromolecular yellow, YONGGU yellow, YONGGU violet, azo red, etc
Common inorganic pigments are: cadmium red, cadmium yellow, titanium dioxide, carbon black, iron oxide red, iron oxide yellow, etc
It is the matrix of color masterbatch. The special color masterbatch generally chooses the same resin as the product resin as the carrier, the compatibility of the two is the best, but the mobility of the carrier should be considered at the same time.
The melting point of the dispersant should be lower than that of the resin. It has good compatibility with the resin and has good affinity with the pigment. The most commonly used dispersants are polyethylene low molecular wax and stearate.
Such as flame retardant, brightening, antibacterial, antistatic, anti-oxidation and other varieties, unless required by the customer, the color masterbatch generally does not contain the above additives.
3、 What are the varieties and grades of Color Masterbatch?
The classification methods of color masterbatch are as follows:
According to the carrier classification: such as PE masterbatch, PP masterbatch, ABS masterbatch, PVC masterbatch, EVA masterbatch, etc
Classification by use: such as injection masterbatch, blow molding masterbatch, spinning masterbatch, etc
The varieties can be divided into different grades
1. Advanced injection masterbatch:
It is used for cosmetic packing box, toy, electrical shell and other high-grade products.
2. Common injection masterbatch:
It is used for general daily plastic products, industrial containers, etc.
3. Advanced blowing masterbatch:
Used for blow molding and coloring of ultra-thin products.
4. Common blowing masterbatch:
Used for blow molding and coloring of general packing bags and woven bags.
5. Spinning masterbatch:
It is used for textile fiber spinning coloring. The color masterbatch pigment has fine particles, high concentration, strong coloring power, good heat resistance and light resistance.
6. Low grade masterbatch:
It is used to make low-grade products with low requirements on color quality, such as garbage cans, low-grade containers, etc.
7. Special color masterbatch:
It is a color masterbatch made of the same plastic as the carrier according to the plastic variety specified by the user. For example, PP masterbatch and ABS masterbatch are selected as carriers.
General color masterbatch: some kind of resin (usually PE with low melting point) is used as carrier, but it can be used for coloring other resins except its carrier resin.
8. Universal color masterbatch
General color masterbatch is relatively simple and convenient, but there are many disadvantages. It is recommended that users choose special color masterbatch.
The heat resistance grade of the special color masterbatch is generally suitable for the plastics used in the products, so it can be used safely at normal temperature. Only in the following cases will cause varying degrees of discoloration, one is the temperature beyond the normal range, the other is the shutdown time is too long.
9. Compared with pelletizing coloring, masterbatch coloring has the following advantages:
9.1. Coloring and product processing should be completed at one time to avoid the heating process of granulation and coloring, which is good for protecting the quality of plastic products.
9.2. Simplify the production process of plastic products.
9.3. It can save a lot of electric energy
4、 Why use color masterbatch?
The use of color masterbatch has the following advantages:
1. Make the pigment have better dispersion in the products
Color masterbatch is a kind of aggregate which is made by uniformly loading super constant pigment into resin.
In order to improve the dispersibility and coloring power of pigments, it is necessary to refine the pigments in the production process of color masterbatch. The carrier of the special color masterbatch is the same as the plastic of the product, which has good matching. The pigment particles can be well dispersed in the plastic products after heating and melting.
2. It is beneficial to maintain the chemical stability of the pigment
If the pigment is directly used, the pigment will absorb water and oxidize when it is in direct contact with the air in the process of storage and use. When the pigment is made into a color master, the quality of the pigment will remain unchanged for a long time because the resin carrier separates the pigment from the air and water.
3. Ensure the color stability of products:
The color masterbatch particles are similar to the resin particles, so they are more convenient and accurate in measurement. When mixing, they will not adhere to the container, and the mixture with the resin is more uniform. Therefore, the stability of the added amount can be guaranteed, so as to ensure the stability of the product color.
4. Protect the health of operators:
The pigment is usually powdery and easy to fly when added and mixed. It will affect the health of operators after being inhaled by human body.
5. Keep the environment clean and do not contaminate the utensils
6. Simple process, easy color conversion, saving time and raw materials