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A kind of multifunctional epoxy compound-terminated anti-moisture and heat aging polyester film and its synthesis method

A technology of epoxy compounds and epoxy compounds, applied in the field of polyester synthesis, can solve problems such as performance degradation, and achieve the effects of eliminating reprocessing, high reactivity and reducing carboxyl end groups

Active Publication Date: 2020-07-07
扬州帅帅高分子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the outdoor environment, the polyester film is affected by the external environment such as temperature, moisture, mechanical action, etc., the molecular chain segments are continuously hydrolyzed, and the performance of all aspects is gradually reduced.

Method used

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  • A kind of multifunctional epoxy compound-terminated anti-moisture and heat aging polyester film and its synthesis method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Synthesis of a Multifunctional Epoxy Compound-terminated Polyester with Moisture and Heat Aging Resistance

[0023] Raw material: 400g of terephthalic acid, 180g of ethylene glycol, 0.16g of antimony ethylene glycol, 0.1g of trimethyl phosphate, 5g of diglycidyl ether (Mn≈130) was added.

[0024] step:

[0025] (1) PET was synthesized in a 2L special polyester experimental reactor. Add all the above-mentioned raw materials into the reaction kettle at one time before the reaction starts, start stirring before adding, the stirring speed is 25Hz / min, slowly put in the raw materials and additives, and stir for 10 minutes. Close the feeding port after feeding. Nitrogen was pumped three times to remove the oxygen in the reaction kettle.

[0026] (2) Feed in nitrogen to raise the pressure in the kettle to 150KPa. After the material is evenly stirred, turn on the electric heater of the reactor to heat the material slowly. The jacket heating temperature is set to 270°C by th...

Embodiment 2

[0032] Synthesis of a Multifunctional Epoxy Compound-terminated Polyester with Moisture and Heat Aging Resistance

[0033] Raw materials: 360g terephthalic acid, 40g isophthalic acid, 224g ethylene glycol, 0.08g antimony ethylene glycol, 0.08g tetrabutyl titanate, 0.1g trimethyl phosphate, add diglycidyl ether (Mn≈130 ) 5g.

[0034] Synthetic steps:

[0035] PET was synthesized in a 2L special polyester experimental reactor. Add all the above-mentioned raw materials into the reaction kettle at one time before the reaction starts, start stirring before adding, the stirring speed is 25Hz / min, slowly put in the raw materials and additives, and stir for 10 minutes. Close the feeding port after feeding. Nitrogen was pumped three times to remove the oxygen in the reaction kettle.

[0036] Nitrogen was introduced to raise the pressure in the kettle to 150KPa. After the material is evenly stirred, turn on the electric heater of the reactor to heat the material slowly. The jacket ...

Embodiment 3

[0043] Synthesis of a Multifunctional Epoxy Compound-terminated Polyester with Moisture and Heat Aging Resistance

[0044] Raw materials: 400g of terephthalic acid, 180g of ethylene glycol, 0.08g of antimony ethylene glycol, 0.08g of tetrabutyl titanate, 0.1g of trimethyl phosphate, and 15g of polypropylene glycol diglycidyl ether (Mn≈380).

[0045] Synthetic steps:

[0046] PET was synthesized in a 2L special polyester experimental reactor. Add all the above-mentioned raw materials into the reaction kettle at one time before the reaction starts, start stirring before adding, the stirring speed is 25Hz / min, slowly put in the raw materials and additives, and stir for 10 minutes. Close the feeding port after feeding. Nitrogen was pumped three times to remove the oxygen in the reaction kettle.

[0047] Nitrogen was introduced to raise the pressure in the kettle to 150KPa. After the material is evenly stirred, turn on the electric heater of the reactor to heat the material slo...

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Abstract

The invention discloses a polyfunctional epoxy compound-terminated hygrothermal aging-resistant polyester film and a synthesis method thereof. The polyfunctional epoxy compound-terminated hygrothermalaging-resistant polyester film is prepared from the components of a dicarboxylic acid monomer and ethylene glycol in a molar ratio of 1: 1.2-1.5, the ratio of a polyfunctional epoxy compound accounting for the dicarboxylic acid monomer is 1.6 mol%, the weight of a catalyst is 0.04% of the total weight of the dicarboxylic acid monomer, the weight of a stabilizer is 0.025% of the total weight of the dicarboxylic acid monomer; wherein the polyfunctional epoxy compound is a difunctional epoxy compound having epoxy groups at both ends of the molecule. The polyester film prepared by the method greatly improves the aging resistance under the premise of maintaining the mechanical properties such as good tensile strength of a PET material, and can prolong the service life of the PET film in the outdoor environment.

Description

technical field [0001] The invention relates to the field of polyester synthesis, in particular to a damp-heat aging-resistant polyester film terminated by a multifunctional epoxy compound and a synthesis method thereof. Background technique [0002] Polyethylene terephthalate (PET) is a polycondensation product of terephthalic acid and ethylene glycol. It is a linear macromolecule with a regular molecular chain structure. PET polymers are just good at mechanical properties, thermal properties, At the balance point of chemical performance and economy, PET is currently the thermoplastic polyester material with the largest production capacity and the widest application in the world. Polyester film is a colorless, odorless, transparent polymer film, which has the characteristics of high tensile strength, good optical properties, high elastic modulus, good toughness, good thermal stability, etc., and has acid resistance, alkali resistance, Good air tightness and other advantage...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/183C08G63/86C08G63/85C08G63/91C08J5/18C08L67/02
CPCC08G63/183C08G63/85C08G63/866C08G63/916C08J5/18C08J2367/02
Inventor 白永平王秋霞李卫东李晶波殷晓芬
Owner 扬州帅帅高分子科技有限公司
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