Conventional plastic masterbatch processing methods can be divided into two-roll milling method, smelting method, and extrusion method according to the process route. Commonly used equipment includes two-roller machines, single-screw extruders, twin-screw extruders, and internal mixers. Mixing equipment. The masterbatch prepared by this method has disadvantages such as uneven spreading of the carrier resin, poor cross-section adhesion of the auxiliary agent and the carrier resin, and complicated production process.
In response to the above deficiencies, a number of new processing technologies have been developed. The new masterbatch processing technologies include (1) selection and processing technologies for carrier resins; (2) polymer encapsulation technologies; (3) liquid-phase blending methods; (4) Melt phase blending method; (5) Molecular self-assembly technique.