1. First, the role of the black masterbatch is to dye the plastic that needs to be dyed in black.

2. The more important parameter of black masterbatch is dispersion. Therefore, the formula of black masterbatch should be reasonable, and the production process should be strict. Otherwise, the surface of plastic products produced after adding black masterbatch will be with pitting, pit or water pattern.

3. Black masterbatch formula: usually use carbon black as the main pigment, with masterbatch carrier and dispersing aid.

4. There are many kinds of carbon blacks applied to black masterbatch. The low-grade carbon black can only be used to produce plastic products with common requirements. The blackness is generally low and the price is also cheap. On the contrary, the production of high-grade plastic products requires a smooth and delicate surface, blue phase, and environmentally strict conditions must choose high-grade carbon black.

5. There are also many carriers for black masterbatch, usually using PE raw materials, which can be easily produced or compatible with many kinds of plastics. If the plastic product requires a very bright surface and a small influence on the physical properties, it is necessary to use a plastic which uses the same raw material as the carrier of the masterbatch. In order to reduce costs, it is possible to select a regenerative material of relatively stable quality.

6. There are also a wide variety of dispersants for black masterbatch, such as PE wax and EBS. In order to reduce costs, it is also possible to select regenerated wax with relatively stable quality. Calcium carbonate has also been used as an auxiliary aid to help reduce costs.

7. The black masterbatch of 1usd per kilogram on the market must use recycled plastic base material, cheap carbon black, recycled wax as dispersing agent, and also add calcium carbonate as filling. Only in this way can we reduce costs. Of course, this does not affect its use, because some plastic products do not need such high requirements, and the cost can not be accepted.

8. Based on the current raw material prices, the black masterbatch of at least 2-3usd may have used high-grade environmentally-friendly carbon black, and may have used new plastic raw material as the carrier, and new dispersing aid, and without calcium carbonate. If below this price, one of the raw materials must have used the cost reduction formula.

In addition, the following items should be noted when selecting black masterbatch:

1. The choice is more appropriate, not necessarily the more expensive the better, some color masterbatch is very black on ABS, but not necessarily black on PP.

2. The more important performance of black masterbatch is dispersion. It is better to choose more dispersed color masterbatch. It is also not recommended to choose the so-called blackness and dispersion, especially for blown film, unless it is used for granulation.

3. Compatibility with raw materials. When the color masterbatch of different carriers is used in plastic raw materials, it may lead to delamination of the products due to incompatibility between the two materials, and the surface of the products may also have pits.

4. Adding a proper amount. If the amount is less, it will cause uneven, and if the amount is too much, it will affect the physical properties, which may increase the cost.

5. Stir well with the raw materials, choose the masterbatch with the size similar to the raw material particles, otherwise the color masterbatch with smaller particles will sink to the below during the mixing process, which will cause some products to be dyed, and some products still remains primary color.

6. The processing temperature should not be too high or low, otherwise it may cause the plasticization effect of the color masterbatch to be bad and affect the effect of plastic products.

7. Choose qualified, honest, quality-conscious and control-oriented suppliers with development capabilities.