The reasons for the peeling phenomenon of black masterbatch

(1) Replace the black masterbatch with the same resin as the product as the carrier;

(2) Reduce the amount of carrier resin in black masterbatch;

(3) Improve the concentration of color masterbatch; The dispersion and coloring power of pigments should be good. Uneven dispersion of pigments can affect the appearance and function of the product;

When the coloring power of the color masterbatch is poor, it will increase the amount of pigment used and increase the cost of materials. The dispersion and coloring power of the same color material in different resins are not the same, so this should be noted when selecting color materials.

Methods to Improve the Quality of Black Mother

1、 If the masking power of carbon black is strong, it can mask the color of the lower layer during the production process, and the color of the black mother becomes more uniform and shiny.

2、 The resin that produces color masterbatch has good fluidity and rheological properties, so the color of the color masterbatch will be uniform, and the production will generally not present significant problems.

3、 It depends on the machine that extrudes the black masterbatch. Generally speaking, using a high-level shearing and laminating machine is better than using a single or double spiral extruder to produce black masterbatch quality, as the former can make carbon black come into good contact with resin.

Process requirements for the application of black masterbatch

When using black masterbatch to color injection molded products, choose a screw type injection molding machine to avoid uneven coloring caused by poor plasticization and mixing.

2. Improve the extrusion back pressure to enhance the mixing effect of the screw, which can make the black masterbatch more evenly dispersed.

3. Porcelain like color can only be displayed when the mold is very bright.

During the production process, if black masterbatch is found to adhere to the hopper wall, it is mainly due to static electricity. The hopper can be grounded to eliminate static electricity, which will not affect the process.

The reasons for uneven chromaticity when using black masterpieces

1. The black mother share used is incorrect, adjust the correct share.

2. The mixing of black mother and product is uneven and requires sufficient stirring.

3. When using black masterpieces, temperature is crucial, as only the appropriate temperature can ensure uniform coloring.

Article source: Taishan conductive mica particles

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