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Biaxially oriented polyester film with excellent dimensional stability at high temperature, and production method thereof

A biaxially oriented polyester, dimensional stability technology, applied in the field of polymer films, can solve the problems of decreased dimensional stability, limited application range, poor heat resistance and high temperature dimensional stability, etc. The effect of good toughness and excellent high temperature dimensional stability

Inactive Publication Date: 2019-08-16
无锡风鹏新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its low glass transition temperature (69°C) makes it poor in heat resistance and high temperature dimensional stability, and its long-term use temperature is up to 120°C, and its dimensional stability drops sharply after exceeding 120°C
This greatly limits its application range, especially in high-end compact products such as film capacitors

Method used

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  • Biaxially oriented polyester film with excellent dimensional stability at high temperature, and production method thereof
  • Biaxially oriented polyester film with excellent dimensional stability at high temperature, and production method thereof
  • Biaxially oriented polyester film with excellent dimensional stability at high temperature, and production method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Weigh the following raw materials in parts by weight: 2000g of tere-2.5-furandicarboxylic acid, 870g of ethylene glycol, 100g of 1,4-cyclohexanedimethanol, 600g of terephthalic acid, 5g of ethylene glycol antimony catalyst, and 1.5 g of triphenyl phosphate g, 3g of silica blocking agent with a particle size of 5 μm, and 5g of EV234.

[0021] Mix the above weighed 2.5-furandicarboxylic acid, ethylene glycol, 1,4-cyclohexanedimethanol, terephthalic acid, ethylene glycol antimony catalyst, silicon dioxide opening agent, EV234, and add to 5L reactor, stirring for half an hour. Then slowly vacuum the reactor to below 100Pa, then slowly fill the reactor with nitrogen to 250KPa, and then slowly release the nitrogen. After repeating this twice, raise the temperature and pressure of the reactor to carry out the esterification reaction, and maintain the reaction during the esterification process. The temperature in the kettle is 230° C., and the pressure inside the reactor is ke...

Embodiment 2

[0025] Weigh the following raw materials in parts by weight: 1,800 g of 2,5-furandicarboxylic acid, 750 g of ethylene glycol, 200 g of isosorbide, 1,200 g of 1,4 cyclohexanedicarboxylic acid, 1 g of ethylene glycol antimony catalyst, and 0.5 g of triphenyl phosphate , 2g of barium sulfate opening agent with a particle size of 5μm, 3g of ST13006.

[0026] Mix the above weighed 2,5-furandicarboxylic acid, ethylene glycol, isosorbide, 1,4-cyclohexanedicarboxylic acid, ethylene glycol antimony catalyst, barium sulfate opening agent and ST13006, add to 5L reaction In the kettle, stir for half an hour. Then slowly vacuum the reactor to below 100Pa, then slowly fill the reactor with nitrogen to 250KPa, and then slowly release the nitrogen. After repeating this twice, raise the temperature and pressure of the reactor to carry out the esterification reaction, and maintain the reaction during the esterification process. The temperature in the kettle is 240° C., and the internal pressur...

Embodiment 3

[0030] Weigh the following raw materials in parts by weight: 2100g of 2,5 furandicarboxylic acid, 1200g of ethylene glycol, 150g of 2,2,4,4-tetramethyl-1,3-cyclobutanediol, 900g of isophthalic acid, 7g of antimony glycol catalyst, 1g of triphenyl phosphate, 10g of silicon dioxide blocking agent with a particle size of 5μm, and 7g of EV234.

[0031] The above weighed 2,5 furandicarboxylic acid, ethylene glycol, 2,2,4,4-tetramethyl-1,3-cyclobutanediol, isophthalic acid, ethylene glycol antimony catalyst, di After mixing the silicon oxide anti-blocking agent and EV23 evenly, add it to the 5L reaction kettle and stir for half an hour. Then slowly evacuate the reactor to below 100Pa, then slowly pump nitrogen to 250KPa, and then slowly release the nitrogen. After repeating this twice, the reactor is heated and pressurized to carry out the esterification reaction, and the reactor is maintained during the esterification process. The internal temperature is 230°C, and the internal pr...

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Abstract

The invention discloses a biaxially oriented polyester film with an excellent dimensional stability at a high temperature, and a production method thereof. The biaxially oriented polyester film is prepared from, by weight, 1800-2200 parts of 2,5-furandicarboxylic acid, 750-1500 parts of ethylene glycol, 100-200 parts of cyclic diol, 600-1200 parts of a modified diacid, 1-10 parts of a catalyst, 0.5-2 parts of a first stabilizer, 2-50 parts of an anti-blocking agent and 3-10 parts of a second stabilizer. The biaxially oriented polyester film with the excellent dimensional stability at the hightemperature has a good heat resistance, a good toughness and a good high temperature dimensional stability, and can fully meet the performance requirements of film capacitors for the film material.

Description

technical field [0001] The invention relates to the field of polymer films, in particular to a biaxially stretched polyester film with excellent high-temperature dimensional stability and a production method thereof. Background technique [0002] BOPET (biaxially oriented polyethylene terephthalate) film has been widely used for its excellent comprehensive properties. However, its low glass transition temperature (69°C) makes it poor in heat resistance and high temperature dimensional stability. Its long-term use temperature is up to 120°C, and its dimensional stability drops sharply after exceeding 120°C. This greatly limits its application range, especially in high-end compact products such as film capacitors. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a biaxially oriented polyester film with excellent high-temperature dimensional stability, which has excellent heat resistance and high-temperature di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08G63/672C08G63/78C08J5/18
CPCC08G63/672C08G63/78C08J5/18C08J2367/02
Inventor 王利鹏白永平
Owner 无锡风鹏新材料科技有限公司
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