Views: 424 Author: Site Editor Publish Time: 2022-01-20 Origin: Site
It is undeniable that masterbatch such as conductive masterbatch is quite popular and common in our daily life. As it has permeated our lives, we should pay attention to it. Therefore, we will introduce the basic information about masterbatches in the following passage just like pigment masterbatches.
The pigment is a common chemical substance that gives a coloring effect to color masterbatch like black color masterbatch. To be general, the more uniform the pigment is dispersed in the masterbatch, the better the coloring effect is, and the stronger the coloring force will be. If you want to disperse the pigment more evenly in the masterbatch, it is better for you to know more about the dispersing property and the dispersion of the pigment itself. In order to improve the dispersion of pigment, suitable carriers are often added to the masterbatch like pigments and masterbatches to achieve the best color effect.
During the use of pigments, condensation occurs on account of their chemical structure and large specific surface area. The dispersant agent is the promoter of the dispersion of pigment in the resin carrier. It is commonly used to cover the surface of the pigment particles and disperse the pigment into fine, stable, and uniformly distributed particles in the plastic, and no longer condenses in the process. The pigment is dispersed in masterbatch like black filler masterbatch and plastic products with a better aggregate state. The melting point of dispersant is generally lower than that of resin and has a better affinity with pigment.
Generally speaking, the carrier is the matrix of the masterbatch. Its main function is to carry pigments. During the melting process, pigment particles can be evenly distributed throughout the resin system, which improves the dispersion of pigment and facilitates granulation. There is no doubt that the carrier has played an important role in this process as it is compatible between the black color functional masterbatch and the matrix resin when the color masterbatch is used.
In addition, polymer materials are often subjected to oxygen and ozone in the process of processing, storage, and use. This oxidation reaction is accelerated especially in heat and light, causing the degradation of the molecular chain of polymers, thus reducing the physical and mechanical properties of the products such as strength, elasticity, and yellow appearance, etc. And in most cases, we want to prolong the life of polymer materials as much as possible. The antioxidants are usually added, and the principle of synergistic effect is used to improve the heat resistance and coloring properties of the rubber masterbatch.
During the process of granulation, the color masterbatch will be greatly affected by the high temperature and strong shear force of the twin-screw masterbatch extruder, which results in the color change and the degradation of the resin in the color masterbatch. If plastic masterbatch manufacturers want to reduce the change of the color masterbatch during the granulation, they should add the general color masterbatch to the color masterbatch to keep the color of the masterbatch.