Polyester release film for optical film and preparation method of polyester release film

Abstract

The invention discloses a polyester release film for an optical film and a preparation method of the polyester release film in the field of optical films, the polyester release film comprises a release film layer and a polyester film layer, the release film layer is arranged on one side of the polyester film layer; the release film layer is prepared from the following raw materials in parts by weight: 10-15 parts of dihydric alcohol, 10-15 parts of isophthalic acid, 10-15 parts of oxalic acid, 1-5 parts of a cross-linking agent, 1-5 parts of an additive, 1-5 parts of a polymerization inhibitor, 1-5 parts of a catalyst, 1-5 parts of an accelerant, 1-5 parts of dye, 1-5 parts of a lubricant and 1-2 parts of wax; the method comprises the following steps: S1, adding dihydric alcohol, isophthalic acid and oxalic acid into a container, mixing and stirring, and standing for later use after stirring is completed. According to the invention, unsaturated polyester resin can be dissolved, double bonds of the unsaturated polyester resin are subjected to a copolymerization reaction to obtain a body type product so as to improve the performance of cured resin, and meanwhile, a small amount of wax is added into the raw materials, so that a thin film is formed on the surface of a coating film, air is isolated so as to promote surface curing, the product quality of the polyester release film is improved, and the use of people is facilitated.

Description

technical field [0001] The invention relates to the field of optical films, in particular to a polyester release film for optical films and a preparation method thereof. Background technique [0002] In modern times, optical thin films have been widely used in the fields of optics and optoelectronics technology to manufacture various optical instruments. The characteristics of optical thin films are: smooth surface, geometric division of the interface between the film layers; the refractive index of the film layer can jump at the interface. Variable, but continuous in the film layer; it can be a transparent medium or an absorbing medium; it can be uniform in the normal direction or inhomogeneous in the normal direction. Practical thin films are much more complex than ideal thin films. This is because: when preparing, the optical properties and physical properties of the film deviate from the bulk material, and its surface and interface are rough, resulting in diffuse scatte...

AI Technical Summary

Problems solved by technology

[0004] At present, when the polyester release film commonly used for optical films is produced, the oxygen in the air usually hinders the curing of the film surface and makes the coating film sticky.

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