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Light weather resistant optical grade PET rigid film

An optical-grade, weather-resistant technology, applied in coatings, polyurea/polyurethane coatings, etc., can solve problems such as film release, screen separation, and poor weather resistance of films, and achieve low surface energy, easy internal rotation, and small overall thickness Effect

Inactive Publication Date: 2019-11-12
四川羽玺新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the application of portable liquid crystal display electronic products more and more widely, consumers pay more and more attention to the protection of display screens, which makes the market demand for screen protective films continue to increase. The weather resistance of existing films used for screen protection is relatively low. Poor, when the temperature is low, it will be deformed due to cold shrinkage, resulting in separation from the screen and release of the film. Therefore, a light weather-resistant optical grade PET hard film is proposed.

Method used

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  • Light weather resistant optical grade PET rigid film
  • Light weather resistant optical grade PET rigid film
  • Light weather resistant optical grade PET rigid film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1) Add 1 part of polytetrafluoroethylene and 1 part of organosilane to 35 parts of UV curing hardening solution and stir evenly, then add 0.4 part of montmorillonite to the stirring solution and continue stirring until uniform to prepare a semi-finished coating solution;

[0022] 2) Mix and stir the semi-finished coating solution prepared in step 1) with 1 part of n-hexadecane, 1 part of diiodomethane and 80 parts of distilled water to obtain a coating solution;

[0023] 3) Use a coating machine to transfer the optical-grade PET film from the unwinding unit to the coating unit, and use the mesh roller to coat the coating solution prepared in step 2) on the optical-grade PET film, dry it through the heat drying unit, and pass through The UV curing unit cures and forms a film to produce a light-duty weather-resistant optical-grade PET hard film.

Embodiment 2

[0025] 1) Add 1.2 parts of polytetrafluoroethylene and 1.2 parts of organosilane to 40 parts of UV curing hardening solution for uniform stirring, then add 0.6 parts of montmorillonite to the stirring solution and continue stirring until uniform to prepare a semi-finished coating solution;

[0026] 2) Mix and stir the semi-finished coating solution prepared in step 1) with 1.1 parts of n-hexadecane, 1.1 parts of diiodomethane and 90 parts of distilled water to obtain a coating solution;

[0027] 3) Use a coating machine to transfer the optical-grade PET film from the unwinding unit to the coating unit, and use the mesh roller to coat the coating solution prepared in step 2) on the optical-grade PET film, dry it through the heat drying unit, and pass through The UV curing unit cures and forms a film to produce a light-duty weather-resistant optical-grade PET hard film.

Embodiment 3

[0029] 1) Add 1.5 parts of polytetrafluoroethylene and 1.5 parts of organosilane to 48 parts of UV resin for uniform stirring, then add 0.6 parts of montmorillonite to the stirring solution and continue stirring until uniform to prepare a semi-finished coating solution;

[0030] 2) Mix and stir the semi-finished coating solution prepared in step 1) with 1.2 parts of n-hexadecane, 1.2 parts of diiodomethane and 45 parts of cyclohexanone to obtain a coating solution;

[0031] 3) Use a coating machine to transfer the optical-grade PET film from the unwinding unit to the coating unit, and use the mesh roller to coat the coating solution prepared in step 2) on the optical-grade PET film, dry it through the heat drying unit, and pass through The UV curing unit cures and forms a film to produce a light-duty weather-resistant optical-grade PET hard film.

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Abstract

The invention belongs to the technical field of optical grade polyester films, and particularly relates to a light weather resistant optical grade PET rigid film. The hardening film is prepared from the raw materials of UV curing resin, a photoinitiator, polytetrafluoroethylene, organosilane, montmorillonoid, n-hexadecane, diiodomethane and cyclohexanone, the hardening film adopts UV curing hardening liquid, thus the hardness of the hardening film is large on the basis of the small thickness, the screen protection ability is high, the polytetrafluoroethylene, the organosilane and the montmorillonoid make surface energy of the hardening film low, thus the hardening film is prevented from being deformed by influence of the low temperature, a silicon oxygen bond in the organosilane has long bond length, large bond angle and easy internal rotation, molecules are helical, methyl groups are arranged outwardly and rotated around the silicon oxygen bond, the surface energy is very low, the good hydrophobic and oleophobic properties are achieved, the surface of the hardening film is not prone to being dirty, and the visual effect of a screen is affected to the low extent while the screen isprotected.

Description

technical field [0001] The invention relates to the technical field of optical-grade polyester films, in particular to a light-duty weather-resistant optical-grade PET cured film. Background technique [0002] PET (polyethylene terephthalate) is synthesized from bishydroxyethyl terephthalate by transesterification of dimethyl terephthalate and ethylene glycol or by esterification of terephthalic acid and ethylene glycol. Then proceed to polycondensation reaction. It is a crystalline saturated polyester, a milky white or light yellow, highly crystalline polymer with a smooth and shiny surface. PET is a common resin in daily life and can be divided into APET, RPET and PETG. [0003] PET has excellent physical and mechanical properties in a wide temperature range, and its long-term use temperature can reach 120 ° C. It has excellent electrical insulation, and its electrical properties are still good even at high temperature and high frequency. [0004] As the polyester film w...

Claims

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Application Information

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IPC IPC(8): C09D175/14C09D7/61C09D7/63C09D7/65C08J7/04C08L67/02
CPCC08J2367/02C08J2427/18C08J2475/14C08K3/346C08K5/54C08K2201/005
Inventor 张卫国郑婷胡章润许显成
Owner 四川羽玺新材料股份有限公司
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