The invention relates to the technical field of polymer material processing, and discloses a method for highly dispersed preparation of a PVA-based melt, comprising the following steps: Step I: raw material preparation; Step II: adding a surfactant and an antioxidant into secondary demineralized water to prepare a first solution, then adding glycerol to the first solution and mixing uniformly to form a second solution; Step III: mixing ethylene glycol with secondary demineralized water uniformly to form a third solution; Step IV: mixing ethylene glycol with secondary demineralized water uniformly to form a fourth solution; Step V: melting, adding polyvinyl alcohol particles into an extruder, adjusting the extruder temperature to 80–100℃ and pressure to 3–6 MPa, adding the second solution to the third section of the extruder, the second solution to the sixth section, and the third solution to the ninth section, melting to form a PVA-based melt. The invention solves the problem of poor PVA film quality caused by poor melt uniformity.
Country Code: CN
Application Number: CN202111217448.5
