The present invention discloses a method for highly efficient volatilization removal from polycarbonate, comprising the following steps: extracting a high-viscosity polycarbonate melt from a polymerization reactor; injecting a certain amount of deionized water into the high-viscosity polycarbonate melt via a liquid injection device in the feed section of a twin-screw extruder; under the high shear action of the screws in the mixing section of the twin-screw extruder, the deionized water is thoroughly mixed with the high-viscosity polycarbonate melt, forming highly volatile bubbles composed of water and residual monomers. A vacuum section is provided at the outlet of the twin-screw extruder to extract the highly volatile components using high vacuum; The mixture is extruded into a strand via the twin-screw extruder and pelletized into polycarbonate particles. This invention reduces residual monomer content in polycarbonate products without compromising quality, requires minimal technical modification investment, and incurs no additional production costs.
Country Code: CN
Application Number: CN202111560799.6
