There is no good conclusion on what kind of resin is used as the carrier for the masterbatch. Some companies use an "application decision carrier", which material is used as a carrier for that material. This is really good for the low toner ratio masterbatch, does not cause delamination, and has little effect on the material properties. However, it is more difficult for masterbatch having a high toner content. The toner content is too high, and the most basic infiltration of toner is difficult to achieve. If a low molecular weight wax is used for the purpose of infiltration as quickly as possible, the dispersion of the toner in the carrier is affected by the inability of the shear to be effectively transferred.
Other manufacturers use the "approximate carrier" approach. That is, a material that is partially compatible with the material is used as a carrier. This requires a lot of relaxation on the carrier. However, for some products with dot-shaped glue inlets, due to the flow shear in the local molding process, gas, silver and even phase separation may occur. Therefore, when making masterbatch, the choice of basic carrier does not seem to be the same. It should be determined according to the molding conditions, material composition and end use of the product.
Some masterbatch factories that have been in contact with us usually use the corresponding resin as a carrier, otherwise there will be incompatibility problems. Good color masterbatch manufacturers use silicone oil in their color matching. The main purpose should be to improve dispersibility and fluidity. The cost of silicone oil is high, and there are problems in adding more. The main reason is that the molecular weight of silicone oil is small, and it will affect printing and painting after precipitation. Poor use of white mineral oil, stearic acid, high temperature summer decomposition, stink.
In a word, the main thing to do color masterbatch is dispersibility and liquidity.
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