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White masterbatch has a dispersing effect
Apr 24, 2018

The white masterbatch acts as a white dye with a dispersant inside, which ensures that it does not merge with other dyes.

White masterbatch exists in three states; primary particles, aggregates, and agglomerates. Its dispersion is the process in which agglomerates are broken into aggregates and primary particles, and new ions are then stabilized. The dispersion process in the resin can be represented by the following three steps: First, the resin melt wets the surface of the agglomerates and penetrates into the internal voids. Secondly, the agglomerates break down under the action of external shear forces and collisions between particles. Finally, the newly generated particles are wet-coated with tree fats and are stable without aggregation.

The resin melt has high viscosity and poor compatibility with the surface of the white masterbatch, so the wetting is poor and it is difficult to penetrate into the gaps of the agglomerates. Therefore, the shear force cannot be effectively transmitted, and it is difficult to break the agglomerates well. It is that after the agglomerates are broken, the resin melt cannot quickly wet and protect the new particles. The mutual collision and contact will cause the particles to re-aggregate.

The dispersant is generally composed of a low molecular weight auxiliary with good compatibility with the carrier resin, has a lower melting point, and has good wettability on the surface of the white masterbatch. When the masterbatch is processed, the dispersant is first fused with the resin. In addition, since the dispersant is usually a low-molecular substance, it can reduce the viscosity of the system and improve the flowability. Therefore, the addition of the dispersant during the production of the masterbatch can increase the production efficiency and increase the production efficiency. Yield, and can increase the concentration of pigment and so on.


  • Contact Us

    Add:No.127, Yanzaohang Village, Xuyuanzi Township, Qingyun County, Dezhou city, Shandong Province

    Fax:+86-531-88257710

    Mob:+8618053491991

    Email:twinklesheng@gmail.com

    Web:www.masterbatch-ls.com

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