Application of carbon black for black cardboard
Carbon black for black cardboard is a kind of carbon black for papermaking, and carbon black for papermaking is a kind of pigment carbon black. Carbon black for black cardboard can not only be used in black cardboard and black paper, but also can be used For fruit bag paper, pear paper, apple paper and other special papers.
Properties of Carbon Black for High Density Black Cardboard
Carbon black has high blackness, high tinting strength, good hue, particle size of 20-30nm, physical form of powder, more than 200 mesh, high-quality powder can be as high as 800 mesh, and high blackness black is used The paper produced by carbon black for cardboard has the characteristics of fine paper quality, penetrating black, strong and thick, large weight thick paper, good folding resistance, smooth surface, good stiffness, good tensile force, and high burst resistance.
800 mesh black paper carbon black price
Now the price of carbon black industry has basically stabilized, and the price of carbon black used in black paper is about 14,000 yuan per ton.
Usage of carbon black for black paper
Adding carbon black to black paper requires the addition of carbon black dispersants, but not all carbon black dispersants are available. Cationic dispersants or wetting agents can be used to use alkyl sulfonates and aryl alkane sulfonates. Natural or modified lignosulfonate hydrochlorides are particularly effective, and hydroxyethyl compounds in nonionic wetting agents are particularly effective. The wetting agent content is 0.5%-12% of carbon black, and also between 5%-10%.
To produce black cardboard, add carbon black pulp or directly add carbon black?
Carbon black is needed for coloring on black paper. Many friends know this, but some friends don’t know whether to use carbon black slurry or directly add carbon black to produce black cardboard. In fact, both methods can produce black cardboard. Cardboard is the production of black cardboard. The black cardboard with color paste is better than the black cardboard with carbon black in terms of strength indicators (breaking resistance, folding resistance, etc.), because when the same blackness is achieved, the amount of carbon black in the fiber added with color paste It is rare, because the increase of pigments and fillers will reduce the bonding force between fibers. However, the black cardboard directly adding carbon black is relatively economical, but after increasing the dosage and increasing the blackness, it will cause powder and color fading. Generally, it is divided into two sides now, adding in the slurry and applying on the surface.