Common sense of masterbatch

Color masterbatch was first developed by Western European countries in the 1960s, and my country's research in this area started relatively late. In the late 1970s, Beijing, Shanghai and Tianjin began to develop and trial production; in the mid-1980s, Beijing Yanshan When Petrochemical and Guangdong Xinhui successively introduced wet and dry technology and equipment from Ciba-Geigy and Hoechst, my country's masterbatch industry entered a period of rapid growth.

The technical requirements of masterbatch are very strict, and the masterbatch technology generally adopted is wet process. The masterbatch material is made by water phase grinding, phase inversion, washing, drying and granulation. Only in this way can the product quality be guaranteed. In addition , When grinding pigments, a series of color masterbatch technical tests should also be carried out, such as measuring the fineness of mortar, the diffusion performance of mortar, the solid content of mortar and the fineness of color paste.

Since the pigments are in direct contact with the air during storage and use, phenomena such as moisture absorption, oxidation, and agglomeration will occur. When directly used on the surface of plastic products, color spots will appear, the color will become darker, and it is easy to fade. When mixed, dust will fly and affect The health of the operator. The color masterbatch is mechanically processed during the production process, and the pigment is refined, and the pigment is fully mixed with the resin carrier and dispersant to isolate the pigment from air and moisture, thereby improving the weather resistance of the pigment. The dispersibility and tinting strength of the pigment are improved, and the hue is bright. Because the shape of the color masterbatch is similar to that of the resin particles, the measurement is more convenient and accurate, and it does not adhere to the container when mixed, saving the time for cleaning the container and the machine and the use of the washing machine of raw materials.