The present invention discloses a method for preparing hydrolysis-resistant PET masterbatch. The preparation method comprises the following steps: The hydrolysis-resistant PET masterbatch is produced via a twin-screw extruder, which includes a main feed port and a side feed port; PET resin is fed into the twin-screw extruder through the main feed port, while the anti-hydrolysis agent is fed through the side feed port. The twin-screw extruder melts and blends the PET resin and anti-hydrolysis agent, extrudes the mixture, and cools it into pellets. The hydrolytic-resistant PET masterbatch of the present invention exhibits excellent color stability without yellowing, ensuring superior performance of downstream photovoltaic backsheet films. Its high hydrolytic resistance guarantees the mechanical properties of downstream photovoltaic backsheet films. The high concentration of hydrolytic inhibitor allows for minimal addition during downstream blending processes while minimizing color impact from the masterbatch, facilitating downstream processing and overcoming powder processing difficulties.
Country Code: CN
Application Number: CN202011436436.7
