High-temperature-resistant transparent polyester film and preparation method thereof

A technology of polyester film and high temperature resistance, applied in the field of polyester film, can solve the problems of expensive PI film, difficult application in high temperature environment, electronic button failure, etc., achieve good chemical resistance, oil resistance, and good transparency , good compatibility effect

Pending Publication Date: 2021-10-01
ANHUI GUOFENG PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polyethylene terephthalate (PET) film has excellent mechanical properties, good elasticity, wear resistance and impact resistance, low water absorption, good dimensional stability, etc., but its heat resistance is poor , the thermal shrinkage rate is relatively large when subjected to high temperature, which cannot meet the requirements of high temperature resistance and low shrinkage in special processing fields such as the electronic product industry. Flexible printed circuit boards (PCBs), but it is difficult to apply to flexible circuit boards (FPC boards) with components and other specific high-temperature environments
At present, high-temperature resistant films on the market generally use expensive PI films, and their material costs are relatively high.

Method used

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  • High-temperature-resistant transparent polyester film and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0031] A kind of high temperature resistant transparent polyester film that the present invention proposes, its thickness is 15 μ m, comprises polyester core layer and the upper surface layer and the lower surface layer laminated on the surface of polyester core layer, wherein the thickness of the upper and lower surface layer is respectively 1 / 3 of the film thickness 12%;

[0032] The core layer is made of the following raw materials in weight percentage: 5% of submicron glass fiber, 0.1% of interfacial coupling agent, and 94.9% of PET chips; wherein, the interfacial coupling agent is vinyltriethoxysilane and methacrylic acid chloride A mixture of chromium salts in a weight ratio of 1:1;

[0033] The composition of the upper and lower surface layers is the same, consisting of the following raw materials in weight percentage: 5% of anti-adhesive masterbatch, 65% of PET slices, and 30% of PEN slices; among them, the effective anti-adhesive particles of the anti-adhesive masterb...

Embodiment 2

[0039] A high temperature resistant transparent polyester film proposed by the present invention has a thickness of 30 μm, including a polyester core layer and an upper surface layer and a lower surface layer laminated on the surface of the polyester core layer, wherein the thicknesses of the upper and lower surface layers are respectively 1 / 3 of the film thickness 13%;

[0040] The core layer is made of the following raw materials in weight percentage: 8% of submicron glass fiber, 1.5% of interfacial coupling agent, and 90.5% of PET chips; wherein, the interfacial coupling agent is vinyltriethoxysilane and methacrylic acid chloride A mixture of chromium salts in a weight ratio of 1:1;

[0041] The composition of the upper and lower surface layers is the same, consisting of the following raw materials in weight percentage: 8% of anti-adhesive masterbatch, 70% of PET slices, and 22% of PEN slices; among them, the effective anti-adhesive particles of the anti-adhesive masterbatc...

Embodiment 3

[0044] A high temperature resistant transparent polyester film proposed by the present invention has a thickness of 50 μm, comprising a polyester core layer and an upper surface layer and a lower surface layer laminated on the surface of the polyester core layer, wherein the thicknesses of the upper and lower surface layers are respectively 1 / 3 of the film thickness 14%;

[0045] The core layer is made of the following raw materials in weight percentage: 10% of submicron glass fiber, 2.5% of interfacial coupling agent, and 87.5% of PET chips; among them, the interfacial coupling agent is vinyltriethoxysilane and tetrabutyl titanate A mixture of esters in a weight ratio of 1:1;

[0046] The composition of the upper and lower surface layers is the same, consisting of the following raw materials in weight percentage: 10% of anti-adhesive masterbatch, 60% of PET slices, and 30% of PEN slices; among them, the effective anti-adhesive particles of the anti-adhesive masterbatch are gl...

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Abstract

The invention discloses a high-temperature-resistant transparent polyester film and a preparation method thereof, and relates to the technical field of polyester films, the high-temperature-resistant transparent polyester film sequentially comprises an upper surface layer, a core layer and a lower surface layer, the core layer comprises the following raw materials by weight: 5-10% of submicron glass fiber, 0.1-2.5% of an interface coupling agent, and 87.5-94.9% of polyester; and the upper surface layer and the lower surface layer are prepared from the following raw materials in percentage by weight: 5 to 10 percent of anti-sticking master batch and 90 to 95 percent of polyester. The polyester film prepared by the invention is good in transparency, high in glossiness, excellent in mechanical property, tensile strength and impact strength, stable in size, low in linear expansion coefficient and good in chemical resistance and oil resistance, and can be widely applied to products such as packaging, electronics, photoelectricity, film switches, panels and flexible display substrates.

Description

technical field [0001] The invention relates to the technical field of polyester films, in particular to a high-temperature-resistant transparent polyester film and a preparation method thereof. Background technique [0002] Polyethylene terephthalate (PET) film has excellent mechanical properties, good elasticity, wear resistance and impact resistance, low water absorption, good dimensional stability, etc., but its heat resistance is poor , the thermal shrinkage rate is relatively large when subjected to high temperature, which cannot meet the requirements of high temperature resistance and low shrinkage in special processing fields such as the electronic product industry. Flexible printed circuit boards (PCBs), but it is difficult to apply to flexible circuit boards (FPC boards) with components and other specific high-temperature environments. At present, high-temperature resistant films on the market generally use expensive PI films, and their material costs are relative...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/36B32B27/06B32B37/06B32B37/10B32B38/00C08L67/02C08L33/12C08K9/04C08K9/06C08K7/14C08K7/20C08J5/18
CPCB32B27/36B32B27/08B32B37/06B32B37/10B32B38/00C08J5/18B32B2307/306B32B2307/412C08J2367/02C08J2467/02C08J2433/12C08K9/04C08K9/06C08K7/14C08K7/20
Inventor 张少伟王红兵张涛陈铸红黄剑丁道俊王恒煜黄昊鹏年陈瑞
Owner ANHUI GUOFENG PLASTIC
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