1. High dispersion: The black masterbatch is produced using carbon black. Raw carbon black, being covered with dust, light in weight and fluffy, will make the working environment dirty and messy unless large-scale treatment measures are adopted. For this reason, foundries generally choose black masterbatch to complete the pre-dispersion of carbon black. This resin carrier is clean, free-flowing and easy to use. The property of carbon black being difficult to disperse also troubles the producers of color masterbatches. The dispersion of high-load black masterbatch produced by single or double screw extruders is very poor. When the end users mix or mold these black masterbatches, their performance is only slightly better than that of carbon black, but the effect is equally unsatisfactory. To achieve a stable high degree of dispersion, a high-standard shear mixer must be used to blend carbon black, such as FCM or BANBURY mixtures. With sufficient strength, these mixers can completely blend carbon black and base resin together. The type of carbon black used also affects the dispersibility. The smaller the carbon black particles are, the more difficult it is to disperse them.
The second factor determining the quality of black masterbatch is its strong covering power. Large-grained carbon black has poor coloring ability and is not easy to cover all the colors in the lower layer. As a result, the final product only yields deviated colors. During the melting process, the ability to correctly select carbon black with high coloring power to cover the existing color is called covering power.
3. Good fluidity: If the color masterbatch itself has good dispersibility but cannot flow into the material to be molded, the production effect will not be ideal. Generally speaking, the primer resin used for the production of masterbatches has relatively high rheological properties. To save costs, some masterbatch producers use reused materials, waste or recycled materials as resin carriers. The flowability of the color masterbatch produced in this way will be significantly reduced. If the rheology is not good, the mold cast will encounter problems in terms of cycle time and appearance treatment. Masterbatches with the minimum dilution ratio can produce uniform and well-dispersed black.
4. Compatibility should be high. Compatibility is the fourth factor determining the quality of black masterbatch. If the color masterbatch is produced using chips or recycled materials, it may contain contaminants or other non-meltable polymers. At this point, a base resin can be selected to produce high-quality color masterbatches, and the masterbatches will have good compatibility during the melting process. High-quality color masterbatches can be produced using LLDPE, LDPE, HDPE, PP, PS, SAN, PA and other materials.
5. Stability should be consistent
One of the main manifestations of stability is a stable proportion of carbon black. If the percentage of carbon black fluctuates, then the amount of color masterbatch that needs to be melted is different, and it is impossible to produce products of the same tone. Of course, other factors such as the fluidity and dispersibility of the injected molten liquid should be consistent with the feeding amount of each batch.
The last factor determining the quality of black masterbatch is the lightness and darkness of the color. There are various types of carbon black available on the market for coloring masterbatches, but the colors and prices of each type also vary greatly. Large-particle carbon black has a lower chromaticity and a different base color than small-particle carbon black. Large particle color masterbatches are suitable for the production of products such as garbage bag films, but not for those that focus on aesthetics, such as TV signs or places that require UV protection, such as agricultural films or external pipes. For these products, small-particle carbon black with a higher price can be used.
I. Look
The black masterbatch with a large amount of material has a bright surface, smooth cut edges, and obvious cut width at the junction of the cut edges.
The black masterbatch with a high ash content has a dull appearance, a slightly irregular cut, and obvious small dots on the surface.
Second, weigh
The black masterbatch with a lot of material feels very light and has a low specific gravity when weighed by hand.
The black masterbatch with a high ash content feels relatively heavy and has a high specific gravity when weighed by hand.
Iii. Bite
Dear compatriots engaged in the masterbatch industry, I'm sure all of you have a professional disease. Whenever you see a black masterbatch, you just want to take a bite.
The black masterbatch with many carriers is soft and gentle when eaten, does not break when chewed, and has excellent toughness.
The black masterbatch with a high ash content is hard and crispy when entering the mouth, with a burst of pulp feeling that leaves you with an endless aftertaste and immediately sookes your mouth.
Iv. Smell
Black masterbatches with a low odor are more likely to be made from new materials.
Black masterbatches with a strong smell, recycled materials and regenerated PE wax are more likely to be made.
V. Burning
When the black masterbatch is ignited, the flame is high, the burning time is long, and there are many carriers and additives.
When black masterbatch is ignited, if the flame is low, the burning time is short, and white non-combustible substances appear on the surface, it indicates a high ash content.
Six. Wipe
Light the black masterbatch until it burns completely, then evenly spread it on the white paper, ensuring the area is of the same size.
Compare the blackness and fineness of the two.
In comparison, the concentration of blacker carbon black is higher
About UsThe company's main products include black and white masterbatches, colored masterbatches, and various functional masterbatches. It is mainly used in the plastic industry such as film blowing, blow molding, bag blowing, injection molding, sheet, pipe, wire, drawing, pelletizing, wire and cable, and modification of engineering materials.
ProductThe company's main products include black and white masterbatches, colored masterbatches, and various functional masterbatches. It is mainly used in the plastic industry such as film blowing, blow molding, bag blowing, injection molding, sheet, pipe, wire, drawing, pelletizing, wire and cable, and modification of engineering materials.
Industry applicationThe company's main products include black and white masterbatches, colored masterbatches, and various functional masterbatches. It is mainly used in the plastic industry such as film blowing, blow molding, bag blowing, injection molding, sheet, pipe, wire, drawing, pelletizing, wire and cable, and modification of engineering materials.
NewsThe company's main products include black and white masterbatches, colored masterbatches, and various functional masterbatches. It is mainly used in the plastic industry such as film blowing, blow molding, bag blowing, injection molding, sheet, pipe, wire, drawing, pelletizing, wire and cable, and modification of engineering materials.
Contact usThe company's main products include black and white masterbatches, colored masterbatches, and various functional masterbatches. It is mainly used in the plastic industry such as film blowing, blow molding, bag blowing, injection molding, sheet, pipe, wire, drawing, pelletizing, wire and cable, and modification of engineering materials.
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