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A kind of high stiffness polyester film

A polyester film, high stiffness technology, applied in synthetic resin layered products, chemical instruments and methods, layered products, etc., can solve the problems of complicated polyester film processes, high production costs, poor product appearance, etc. To achieve the effect of high cost performance, low cost and long service life

Active Publication Date: 2021-03-12
HEFEI LUCKY SCI & TECH IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can effectively solve the requirements for high stiffness of polyester film in liquid crystal display industry, photovoltaic industry, release protection industry and other fields, and the production process of high stiffness polyester film in the existing technology is complicated, the production cost is high, the appearance of the product is poor, and the quality is good. Low efficiency and other problems, the film thus prepared is especially suitable for liquid crystal display industry, photovoltaic industry and release protection industry and other fields

Method used

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  • A kind of high stiffness polyester film
  • A kind of high stiffness polyester film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Preparation of modified polyester:

[0039] According to the molar ratio of dibasic acid to dibasic alcohol is 1:1.2, in which dibasic acid terephthalic acid and 2,5-furandicarboxylic acid, 4,4'-biphenyldicarboxylic acid, 4,4'-dicarboxy Biphenylsulfone, the molar ratio is 1:1, the molar ratio of 2,5-furandicarboxylic acid to 4,4′-biphenyldicarboxylic acid and 4,4′-dicarboxybiphenylsulfone is 1:1:1 , the molar ratio of ethylene glycol to propylene glycol in the glycol is 3:1; the addition of antimony to ethylene glycol is 50 ppm, the addition of tetrabutyl titanate is 100 ppm, and the addition of trimethyl phosphate is 15 ppm, mix well Finally, add it to the polyester synthesis reaction kettle, beat for 15 minutes, and pass through nitrogen protection, and carry out esterification for 3 hours at 225 ° C ~ 265 ° C, 250KPa; Under the conditions of 280°C and 35Pa, the polycondensation reaction was carried out for 4 hours, and the modified polyester was obtained through spi...

Embodiment 2

[0042] Preparation of modified polyester:

[0043] According to the dibasic acid and dibasic alcohol molar ratio is 1:1.3, in which dibasic acid terephthalic acid and 2,5-furandicarboxylic acid, 4,4'-diphenyldicarboxylic acid, 4,4'-dicarboxy Biphenylsulfone three, the molar ratio is 2:1, the molar ratio of 2,5-furandicarboxylic acid to 4,4'-biphenyldicarboxylic acid and 4,4'-dicarboxybiphenylsulfone is 2:1:3 , the molar ratio of ethylene glycol to propylene glycol in the glycol is 4:1; the amount of antimony in ethylene glycol is 100ppm, the amount of tetrabutyl titanate is 100ppm, and the amount of trimethyl phosphate is 20ppm, mix well Finally, add it to the polyester synthesis reaction kettle, beat for 15 minutes, and pass through nitrogen protection, and carry out esterification for 3 hours at 225 ° C ~ 265 ° C, 250KPa; Under the conditions of 280°C and 30Pa, the polycondensation reaction was carried out for 3.5 hours, and the modified polyester was obtained through spinnin...

Embodiment 3

[0046] Preparation of modified polyester:

[0047] According to the dibasic acid and dibasic alcohol molar ratio is 1:1.3, in which dibasic acid terephthalic acid and 2,5-furandicarboxylic acid, 4,4'-diphenyldicarboxylic acid, 4,4'-dicarboxy Biphenylsulfone, the molar ratio is 2:1, the molar ratio of 2,5-furandicarboxylic acid to 4,4′-biphenyldicarboxylic acid and 4,4′-dicarboxybiphenylsulfone is 1:2:3 , the molar ratio of ethylene glycol to propylene glycol in the glycol is 3:2; the amount of antimony in ethylene glycol is 110ppm, the amount of tetrabutyl titanate is 100ppm, and the amount of trimethyl phosphate is 22ppm, mix well Finally, add it to the polyester synthesis reaction kettle, beat for 15 minutes, and pass through nitrogen protection, and carry out esterification for 3 hours at 225 ° C ~ 265 ° C, 250KPa; Under the conditions of 280°C and 30Pa, the polycondensation reaction was carried out for 3.5 hours, and the modified polyester was obtained through spinning, c...

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Abstract

The invention discloses a high-stiffness polyester film. The film comprises at least one of a layer A or a layer B, wherein the layer A or / and the layer B comprises 2,5-furandicarboxylic acid, 4,4'-biphenyl dicarboxylic acid and 4,4'-dicarboxy diphenyl sulfone modified polyester. The polyester film has high stiffness, the deformation resistance of the polyester film is greatly improved, the production process of the product is effectively simplified, the production cost is greatly reduced, and the product quality is improved. The product can be widely applied to the technical fields of liquidcrystal display industry, photovoltaic industry, release protection industry and the like.

Description

technical field [0001] The invention discloses a layered product made of synthetic resin, which belongs to the field of film technology. Background technique [0002] With the advancement of science and technology, the production technology of polyester film is also becoming more and more perfect, and its application range is gradually expanding. Polyester film is widely used in packaging, industry, electronics, electrical, magnetic, photosensitive and other fields due to its high mechanical strength, good cold and heat resistance, stable shrinkage and excellent electrical insulation properties. [0003] As people's requirements for material life are getting higher and higher, and they are constantly pursuing the experience of large screen size and large field of view of liquid crystal electronic display devices such as mobile phones, TVs, and flat panels, liquid crystal electronic display devices are getting larger and larger, and the size of the photovoltaic industry is al...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/06B32B27/18B32B27/36C08G63/688C08G63/86C08K3/26C08J5/18
CPCB32B27/08B32B27/18B32B27/36B32B2250/244B32B2264/104C08G63/6886C08G63/866C08J5/18C08J2367/02C08K3/26C08K2003/265
Inventor 王钦高青鲍时萍杜坤霍新莉
Owner HEFEI LUCKY SCI & TECH IND