Antifouling antistatic polyester film, preparation method and application

By forming an antifouling and antistatic coating of modified waterborne acrylic resin and conductive polymer polythiophene aqueous dispersion on the surface of polyester film, the problem of poor antifouling and antistatic properties of polyester film is solved, the antistatic properties and stain resistance of film are improved, and optical transparency is maintained.

CN121574413APending Publication Date: 2026-02-27ANHUI GUOFENG PLASTIC +1
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Patent Information

Application Number
CN202511360592.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-09-23
Publication Date
2026-02-27

AI Technical Summary

Technical Problem

Existing polyester films suffer from instability in their antifouling and antistatic properties, as well as poor adhesion, which affects their performance and application in electrostatic-sensitive environments.

Method used

A combination of modified waterborne acrylic resin and conductive polymeric polythiophene waterborne dispersion is used to form an antifouling and antistatic coating on the surface of a polyester film through a specific coating process. This includes modification treatment with cage-type oligomeric silsesquioxane to improve adhesion and antistatic properties.

Benefits of technology

This technology reduces the surface resistivity of polyester films, improves their stain resistance, and maintains excellent optical transparency and easy cleaning properties, making them suitable for electrostatically sensitive optical devices.

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Abstract

The invention belongs to the technical field of polyester films, and particularly relates to an antifouling and antistatic polyester film, a preparation method and application, the antifouling and antistatic polyester film comprises a polyester base material and an antifouling and antistatic coating, and the antifouling and antistatic coating is prepared from the following raw materials in parts by weight: 10-14 parts of modified waterborne acrylic resin; 17-25 parts of a conductive polymer; 0.6 to 1 part of a cross-linking agent; 0.1 to 0.3 part of a wetting agent; 60 to 75 parts of deionized water; the modified water-based acrylic resin is prepared from the following raw materials in parts by weight: 13 to 17 parts of cage type oligomeric silsesquioxane; 34-42 parts of a hard monomer; 30-38 parts of a soft monomer; 11 to 15 parts of a hydrophilic monomer; and 2-4 parts of an initiator. The polyhedral oligomeric silsesquioxane modified water-based acrylic resin can significantly improve the stain resistance of the film, and the prepared antistatic polyester film has the characteristics of good stain adhesion resistance and easy cleaning.
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