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A kind of production method of polyester film toughening for coated iron

A technology of polyester film and production method, which is applied in the field of composite materials, can solve problems such as mechanical property degradation and difficulty in engineering application, and achieve the effect of improving bonding performance

Active Publication Date: 2016-08-24
成都福全新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, due to the strict molecular chain structure of the biaxially oriented polyester film, it is difficult to directly bond with the tinplate without treatment.
In the prior art, the surface energy of the polyester material is increased by adding a third monomer containing active groups for bonding, but due to the addition of the third active monomer, the flexibility and mechanical properties of the polyester material are greatly improved. The degree of decline, it is difficult to achieve engineering applications

Method used

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  • A kind of production method of polyester film toughening for coated iron
  • A kind of production method of polyester film toughening for coated iron
  • A kind of production method of polyester film toughening for coated iron

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Embodiment 1

[0032] Embodiment 1: a kind of production method of coated iron polyester film toughening, it may further comprise the steps:

[0033] 1) Terephthalic acid, ethylene glycol, and 1,4-butanediol are mixed according to the acid-alcohol mass ratio of 1:1.4, and the antimony oxide content of the catalyst is 2 / 10,000 of the total mass, and the liquid is mixed with the liquid, and the solid is mixed with the solid Then add them into the reaction kettle in the order of first liquid and then solid. After adding the reactants, beating in the kettle for 10 minutes, filling the kettle with nitrogen to 150Kp for the first time, and the inflation speed is 4Kp / min, and then slowly release the gas. The gas speed is 4Kp / min, and the air in the kettle is replaced with nitrogen. When the pressure in the kettle is normal pressure, continue to fill the kettle with nitrogen at the same speed until the pressure in the kettle is 120Kp, carry out nitrogen protection, and then carry out the first temper...

Embodiment 2

[0040] Embodiment 2: a kind of production method of coated iron polyester film toughening, it may further comprise the steps:

[0041]1) Terephthalic acid, ethylene glycol, and polyethylene glycol 400 are mixed according to the acid-alcohol mass ratio of 1:1.4, and the content of antimony oxide in the catalyst is 2 / 10,000 of the total mass. Liquid and liquid, solid and solid are mixed according to The order of first liquid and then solid is added to the reaction kettle. After adding the reactants, beat the inside of the kettle for 15 minutes, and fill the kettle with nitrogen to 150Kp for the first time, and the inflation speed is 4Kp / min, and then slowly release the gas. 4Kp / min, replace the air in the kettle with nitrogen. When the pressure in the kettle is normal pressure, continue to fill the kettle with nitrogen at the same speed until the pressure in the kettle is 120Kp, carry out nitrogen protection, and then raise the temperature for the first time Raise to 200°C, keep...

Embodiment 3

[0048] Embodiment 3: a kind of production method of coated iron polyester film toughening, it may further comprise the steps:

[0049] 1) Terephthalic acid, ethylene glycol, and 1.6-heptanediol, according to the acid-alcohol mass ratio of 1:1.5, the catalyst titanium oxide content is 2 / 10,000 of the total mass, after liquid and liquid, solid and solid are mixed Add the reactant to the reactor in the order of liquid first and then solid. After adding the reactants, beat the reactor for 20 minutes. Fill the reactor with nitrogen to 150Kp for the first time, and the inflation speed is 4Kp / min, and then slowly release the gas. The speed is 4Kp / min, and the air in the kettle is replaced with nitrogen. When the pressure in the kettle is normal pressure, continue to fill the kettle with nitrogen at the same speed until the pressure in the kettle is 120Kp, carry out nitrogen protection, and then heat up for the first time Raise the temperature to 200°C, keep it for 15 minutes, then ra...

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Abstract

The invention discloses a method for producing a toughened polyester film for coated iron. The method comprises the following steps: proportionally measuring terephthalic acid, glycol, a toughened monomer and a catalyst, sequentially adding in a reaction kettle according to the sequence of firstly liquid and then solid, and performing pulp beating for 10-20 minutes; then heating to perform esterification reaction, finishing the esterification reaction when the water output is equal to or larger than 90%, further heating to perform vacuum polycondensation reaction; mixing for vacuum polycondensation reaction after ionic comonomer containing active groups, a stabilizing agent and an anti-block agent are added in esterified prepolymer, then performing water cooling granulating to obtain toughened polyester for coated iron; drawing to obtain the toughened polyester film for coated iron; and compounding the polyester film obtained with a tin plate to obtain a composite material. Through the manner, the adhesion performance of the surface of the polyester film to the surface of the metal plate is improved, the flexibility of the film is controlled by adjusting the content of the toughened monomer; and the film can be attached to the surface of the tin plate without adhesives.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a production method for toughening polyester film for coated iron. Background technique [0002] The metal plate lamination technology is a processing technology in which the plastic film and the metal plate are hot-pressed at high temperature, and the film is attached to the metal plate. Film coating technology was born in Japan in 1977. It was originally used for can making, which can replace internal coating and external coating technology. Up to now, it has been developed into various fields such as building materials, interior and exterior decoration, home appliances, and automobiles. Biaxially oriented polyester film has the characteristics of high mechanical strength, good optical performance, wide service temperature, excellent barrier property, oil resistance, corrosion resistance, and low cost, and is widely used in coated iron composite materials. [0003] The detai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08G63/688C08G63/78
Inventor 白永平丁丽萍王立鹏魏群黄玉东
Owner 成都福全新材料有限公司