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Uvioresistant high-transmitting polyester film and preparation method thereof

A polyester film, anti-ultraviolet technology, applied in chemical instruments and methods, layered products, synthetic resin layered products, etc., can solve the problem of low transparency of titanium dioxide polyester film, and achieve good absorption effect

Inactive Publication Date: 2014-11-19
SUZHOU XILIN OPTOELECTRONICS TECH IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides an anti-ultraviolet high light transmittance polyester film to solve the problem of low transparency of titanium dioxide polyester film

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1) Preparation of anti-ultraviolet polyester layer: disperse the anti-ultraviolet agent in the polyester base by in-situ polymerization method, specifically adding ethylene glycol into the reaction kettle, adding terephthalic acid and various additives while stirring , prepared into a slurry, pressurized to 0.2MPa under the protection of nitrogen; control the internal temperature of the reactor at 230-250°C, after the esterification reaction is completed, the pressure is reduced to normal pressure, and the temperature is lowered to 230°C, and then the compound anti-ultraviolet agent is added to disperse evenly In ethylene glycol, add it to the reaction kettle, raise the temperature to 260°C, go through the low vacuum and high vacuum stages, control the temperature in the polycondensation kettle to 275-285°C, and the vacuum degree is less than 30Pa. After reaching the required viscosity, flush with nitrogen and add Extruding the material, slicing, preparing and obtaining ...

Embodiment 2

[0027] 1) Preparation of anti-ultraviolet polyester layer: disperse the anti-ultraviolet agent in the polyester base by in-situ polymerization method, specifically adding ethylene glycol into the reaction kettle, adding terephthalic acid and various additives while stirring , prepared into a slurry, pressurized to 0.2MPa under the protection of nitrogen; control the internal temperature of the reactor at 230-250°C, after the esterification reaction is completed, the pressure is reduced to normal pressure, and the temperature is lowered to 230°C, and then the compound anti-ultraviolet agent is added to disperse evenly In ethylene glycol, add it to the reaction kettle, raise the temperature to 260°C, go through low vacuum and high vacuum stages, control the temperature in the polycondensation kettle to 275-285°C, and the vacuum degree is less than 30Pa. After reaching the required viscosity, flush with nitrogen and add Extruding the material, slicing, and preparing anti-ultraviol...

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Abstract

The invention belongs to the field of high polymer materials and in particular relates to an uvioresistant high-transmitting polyester film and a preparation method thereof. The uvioresistant high-transmitting polyester film comprises an uvioresistant polyester layer and silica film layers, wherein the silica film layers are arranged on one surface or two surfaces of the uvioresistant polyester layer; the uvioresistant polyester layer is formed by dispersing an uvioresistant agent in a polyester matrix, and the uvioresistant agent comprises nano-titanium dioxide and nano-zinc oxide. The preparation method comprises the following steps: preparation of the uvioresistant polyester layer; corona treatment; and preparation of silica sol and film coating. According to the technical scheme, the uvioresistant agent is used; compared with current single titanium dioxide, composite powder has low scattering capacity to visible light of 400-700nm and can well absorb ultraviolet light of 200-350nm in spectrum. Sol prepared by sol-gel processing is used for improving permeability under a proper film coating condition, and finally the uvioresistant high-transmitting polyester film is prepared.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to an anti-ultraviolet high light-transmitting polyester film and a preparation method thereof. Background technique [0002] Polyester (polyethylene terephthalate PET) film is widely used in Many industries and fields. [0003] However, the UV resistance of polyester films is poor. Especially in recent years, with the extensive use of fluorocarbon solvents and freons, the problem of UV aging of films has become more prominent. Therefore, the development of PET films with good UV resistance can not only improve the performance of films. The service life can improve the overall performance of the film. [0004] At present, the anti-ultraviolet performance of the film is improved by adding an anti-ultraviolet agent to the polyester resin, especially nano-titanium dioxide, whose preparation technology is mature, the effect is good, and it is the most widely used. The tra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/06B32B27/18B32B27/36B32B9/04C08L67/00C08K3/22
Inventor 金国华黄强杨乐施燕陈胜利周明许修安韩州叶建明朱霆
Owner SUZHOU XILIN OPTOELECTRONICS TECH IND
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