In masterbatch, masterbatch generally classified very special variety, polypropylene PP masterbatch, color masterbatch, antibacterial Masterbatch, anti-aging masterbatch, etc., depending on the particular product. Today small as we explain masterbatch special organic surface treatment technology process details

Generally using masterbatch technology is a wet process. Specifically dedicated masterbatch by the water lapping phase, phase, washing, drying, granulation is made, the only way quality can be guaranteed. In addition, while the pigment grinding process, but also a series of masterbatch detected, as determined fineness of the sand slurry, determination of the diffusion properties of sand slurry, sand slurry solids content determination and the determination of fineness paste project.
By suitable organic surface modification dedicated masterbatch is the use of certain properties of titanium dioxide has been greatly improved. After calcination of titanium dioxide and inorganic coating, chemical stability is very good, basically does not chemically react with the plastic in a variety of system components. But there are some organic treatment agent may be involved in chemical reactions. Therefore, we should choose some chemically inert organic treatment agents such as silicone or some special modified silicone, it is low and high temperature environment has a very good chemical stability, will not work with color masterbatch system any additives chemical reaction occurs.
Titanium dioxide due to lattice defects, discoloration due to high temperature easily. Full and inorganic coating suitable organic film can significantly improve the heat resistance of titanium dioxide. Conventional organic coating agent is not due to its high temperature, prone to yellowing and decomposition at high temperatures, a lot of titanium dioxide manufacturers have encountered in the practical application of this "yellowing" problem. Decomposition temperature of some special silicone material exceeds 350 degrees, 300 degrees does not occur within a color change, that does not occur yellowing. Further, the organosilicon material is coated with titanium dioxide particle surface after the transfer of free radicals can be prevented, thereby further enhancing the heat and light stability of titanium dioxide.
Migration Dedicated titanium dioxide masterbatch was mainly due to poor compatibility wetting it with a resin at a temperature of decrease plastic shrinkage, the moving speed of the resin and titanium dioxide inconsistencies caused. To reduce migration, it is necessary to improve the compatibility of the resin and titanium dioxide. Following a similar principle compatible with the organic surface treatment agent titanium dioxide preferably has a resin applied the same or similar functional groups. For the most common type of polyolefin plastic, black masterbatch choose organic treatment agent containing a long-chain alkanes would be more appropriate.

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