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High-hardness polyester film as well as preparation method and application thereof

A technology of polyester film and hardness, applied in the field of metal particle functionalized polyester film and its preparation, high hardness polyester film, can solve the problems of easy scratch, low surface tension, low hardness, etc., and achieve transparency Good stability, increased hardness, and simple process

Inactive Publication Date: 2021-04-20
江苏理想光学科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low surface tension and low hardness of the polyester film surface, it is prone to scratches, scratches and other disadvantages in the post-processing process, which affects the later use of polyester. In order to solve this problem, the polyester film is generally processed After chemical treatment, a hard coat is applied to increase the hardness of the polyester surface
But this will cause a decline in optical performance, which greatly limits its application in the field of optical films.
[0004] For example, in CN201611207114.9, rigid groups such as naphthalene rings are added to polyester raw materials to increase the hardness of polyester, but this greatly increases the cost of polyester, which is also unfavorable for its wide application

Method used

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  • High-hardness polyester film as well as preparation method and application thereof
  • High-hardness polyester film as well as preparation method and application thereof
  • High-hardness polyester film as well as preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0029] This embodiment provides a metal particle-based functionalized polyester film and a preparation method thereof, which specifically includes the following steps:

[0030] (a) Add ethylene glycol and dimethyl terephthalate (the molar ratio is 2:1) to the reaction tank of the rectification tower, and add cobalt acetate tetrahydrate (as a transesterification catalyst, its addition is in oligomerization about 500ppm in the product) and carry out transesterification at 140°C to obtain oligomers (i.e., diethylene glycol terephthalate); then raise the temperature in the reaction tank to 250°C so that the generated methanol is continuously distilled out , as the transesterification proceeds, diethylene glycol terephthalate is obtained until the transesterification reaction rate is about 98%;

[0031] (b) Under the condition of 100 degrees, add copper sulfate of 150 ppm in terms of copper element and phosphoric acid of 350 ppm in phosphorus element to the excess ethylene glycol s...

Embodiment 2

[0033] The present embodiment provides a kind of functionalized polyester film based on metal particles and its preparation method, which is basically the same as that in Example 1, except that in step (b), 300ppm of copper acetate is added in terms of copper element to 700ppm of dimethyl ester silicone oil in terms of silicon element, 1200ppm of phosphoric acid in terms of phosphorus element, and 260ppm of antimony trioxide.

Embodiment 3

[0035] The present embodiment provides a kind of functionalized polyester film based on metal particles and its preparation method, which is basically consistent with that in Example 1, except that in step (b), 450ppm of copper sulfate is added in terms of copper element to 1200ppm of methyl silicone oil in terms of silicon element, 1500ppm of phosphoric acid in terms of phosphorus element, and 360ppm of antimony trioxide.

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Abstract

The invention provides a high-hardness polyester film as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing aromatic dicarboxylic acid or a derivative thereof with aliphatic diol, and carrying out esterification reaction to obtain an aromatic oligomer; carrying out condensation polymerization on an aromatic oligomer, sequentially adding an antimony precursor, a silicon precursor and a complex during the condensation polymerization, and carrying out a reaction to obtain a polyester mixture when the viscosity reaches 0.5 dl / g- 1.0 dl / g; and carrying out melt extrusion, casting, longitudinal drawing, transverse drawing, traction and rolling on the polyester mixture to obtain the high-hardness polyester film.

Description

technical field [0001] The invention relates to a relatively hard polyester film, in particular to a functionalized polyester film based on metal particles and a preparation method thereof, belonging to the field of polymer materials. Background technique [0002] Polyester film, especially polyethylene terephthalate, has excellent performance in mechanical, electrical insulation, chemical and other aspects, as well as excellent optical performance and flexibility. It also has heat resistance, chemical resistance, good mechanical strength, and transparency. It is widely used in various fields, such as electrical insulation, display, photovoltaic backplane material, in-film injection molding, hard protection and other industries. [0003] At present, polyester materials are widely used in various highly molecularly oriented stretched articles, such as films and other products. However, due to the low surface tension and low hardness of the polyester film surface, it is prone...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L67/02C08K5/00
Inventor 张晓良
Owner 江苏理想光学科技有限公司
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