Ultraviolet resistant polyethylene glycol terephthalate PET film

An anti-ultraviolet and ultraviolet technology, which is applied in the field of anti-ultraviolet PET film, can solve the problems of affecting visual effects, film transmittance and haze, etc., and achieve the effect of prolonging timeliness and not easy to migrate

Inactive Publication Date: 2014-07-30
新纶电子材料(常州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sputtering on the colorless and transparent PET film, the film will show the color of non-ferrous metal, which will affect the transmittance and haze of the film, and affect the visual effect

Method used

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  • Ultraviolet resistant polyethylene glycol terephthalate PET film
  • Ultraviolet resistant polyethylene glycol terephthalate PET film
  • Ultraviolet resistant polyethylene glycol terephthalate PET film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] An anti-ultraviolet PET film in this embodiment, the PET masterbatch of the PET film is mixed with ultraviolet absorber UV-326 (Nanjing Milan Chemical Co., Ltd.) and Tinuvin 770 (Yixing Angel Synthetic Chemical Co., Ltd.).

[0028] The preparation method of above-mentioned anti-ultraviolet PET film comprises the steps:

[0029] Step 1: Mix 97.6g PET masterbatch, 0.8g UV-326 (Nanjing Milan Chemical Co., Ltd.) and 1.6g Tinuvin 770 (Yixing Angel Synthetic Chemical Co., Ltd.), and dry to control the moisture content below 50ppm to obtain raw material mixture;

[0030] Step 2: Put the raw material mixture obtained in Step 1 into the reaction kettle, heat up to 270°C to melt the mixture, filter it, extrude it, and rapidly cool it through a cold drum; then preheat it for transverse stretching and longitudinal stretching, the preheating temperature At 200°C, it is finally formed into a transparent PET film.

Embodiment 2

[0032] An anti-ultraviolet PET film in this embodiment, the PET masterbatch of the PET film is mixed with ultraviolet absorber UV-326 (Nanjing Milan Chemical Co., Ltd.) and Tinuvin 770 (Yixing Angel Synthetic Chemical Co., Ltd.).

[0033] The preparation method of above-mentioned anti-ultraviolet PET film comprises the steps:

[0034] Step 1: Mix 94.9g of PET masterbatch, 1.7g of UV-326 (Nanjing Milan Chemical Co., Ltd.) and 3.4g of Tinuvin 770 (Yixing Angel Synthetic Chemical Co., Ltd.), and dry to control the moisture content below 50ppm to obtain raw material mixture;

[0035] Step 2: Put the raw material mixture obtained in Step 1 into the reaction kettle, heat up to 270°C to melt the mixture, filter it, extrude it, and rapidly cool it through a cold drum; then preheat it for transverse stretching and longitudinal stretching, the preheating temperature At 200°C, it is finally formed into a transparent PET film.

Embodiment 3

[0037] An anti-ultraviolet PET film in this embodiment, the PET masterbatch of the PET film is mixed with ultraviolet absorber UV-326 (Nanjing Milan Chemical Co., Ltd.) and Tinuvin 770 (Yixing Angel Synthetic Chemical Co., Ltd.).

[0038] The preparation method of above-mentioned anti-ultraviolet PET film comprises the steps:

[0039] Step 1: Mix 97.6g of PET masterbatch, 0.94g of UV-326 (Nanjing Milan Chemical Co., Ltd.) and 1.46g of Tinuvin 770 (Yixing Angel Synthetic Chemical Co., Ltd.), and dry to control the moisture content below 50ppm to obtain raw material mixture;

[0040] Step 2: Put the raw material mixture obtained in Step 1 into the reaction kettle, heat up to 270°C to melt the mixture, filter it, extrude it, and rapidly cool it through a cold drum; then preheat it for transverse stretching and longitudinal stretching, the preheating temperature At 200°C, it is finally formed into a transparent PET film.

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Abstract

The invention provides an ultraviolet UV resistant polyethylene glycol terephthalate PET film; an UV absorber for absorption of different bands of ultraviolet is mixed into a PET master batch of the PET film, the UV absorber is a mixture including an UV absorber A and an UV absorber B, the UV absorber A is a benzotriazole UV absorber, the UV absorber B is a hindered amine UV absorber, the weight of the UV absorber A is 50%-80% of the weight of the UV absorber B, and the adding amount of the UV absorber A and the UV absorber B accounts for 2.4%-5.1% of the total weight of a base material layer. The PET film can hinder more than 98% of ultraviolet ray with the wavelength of 290nm-400nm, and according to a method, the UV absorber and the PET master batch are mixed for heating and melting, and then the PET film is formed by film pulling, so that the problem that the visual effect is affected for the reason that a PET film in the prior art has color can be solved.

Description

technical field [0001] The invention relates to an anti-ultraviolet PET film, which belongs to the technical field of functional films. Background technique [0002] Ultraviolet rays in sunlight are the main cause of aging of polymer materials. Polymer materials will absorb ultraviolet rays and cause self-oxidation, resulting in polymer degradation. This process is called photoredox or photoaging. Although ultraviolet light only accounts for about 5% of sunlight, its energy is very large, and its energy is enough to destroy the chemical bonds of polymers, make its molecular chains break and crosslink, resulting in malignant changes in its mechanical properties, and at the same time, its color will also change. Ultraviolet rays can be divided into short-wave regions (ie UVC: 200nm-290nm), medium-wave regions (ie UVB: 290nm-320nm) and long-wave regions (ie UVA: 320nm-400nm) according to wavelength. When sunlight passes through the atmosphere, ultraviolet rays with a wavelengt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08K5/3475C08K5/3435C08J3/22
Inventor 向如亭龙冲
Owner 新纶电子材料(常州)有限公司
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