A kind of water-based coating solution of high weather resistance and heat and humidity resistance polyester film and preparation method thereof

A polyester film, moisture-resistant technology, applied in the direction of coating, can solve problems such as unfavorable long-term sustainable development, environmentally harmful substances, harm to human health, etc., and achieve the effect of reducing volume shrinkage, low volume shrinkage, and reducing holes

Active Publication Date: 2021-10-12
JIANGSU YUXING FILM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, fluorocarbon resin or non-fluorocarbon solvent-based resin coating fluids are non-environmentally friendly materials. During the production process and coating process of coating fluids, a large amount of solvents will volatilize, producing harmful substances to the environment and endangering human health. , not conducive to long-term sustainable development

Method used

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  • A kind of water-based coating solution of high weather resistance and heat and humidity resistance polyester film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Raw materials: polyester modified acrylic resin 18%, thermoplastic acrylic resin 6%, blocked polyisocyanate 4%, DISPERBYK-180 1.8%, TEGO Glide 410 2.5%, rutile TiO 2 20%, the balance of deionized water.

[0027] Preparation:

[0028] (1) First add 1 / 2 of the formula content of polyester modified acrylic resin, rutile TiO 2 , DISPERBYK-180 were diluted with deionized water, and then mixed and stirred for 30 minutes;

[0029] (2) Use a ball mill to grind and disperse for 2 hours, and mix well;

[0030] (3) After grinding, slowly add the remaining polyester-modified acrylic resin, thermoplastic acrylic resin, and TEGO Glide 410 respectively, and continue stirring for 30 minutes;

[0031] (4) Slowly add blocked polyisocyanate, then add the remaining deionized water, and continue stirring for 1 hour.

[0032] The coating liquid is evenly coated on the surface of the polyester film through a slit coating head, and a coating with a thickness of 10 μm can be obtained after...

Embodiment 2

[0034] Raw materials: polyester modified acrylic resin 20%, thermoplastic acrylic resin 6.67%, blocked polyisocyanate 5.5%, DISPERBYK-180 2%, DISPERBYK-184 0.2%, TEGO Glide 482 1%, rutile TiO 2 15%, the balance of deionized water.

[0035] Preparation:

[0036] (1) First add 1 / 2 of the formula content of polyester modified acrylic resin, rutile TiO 2 , DISPERBYK-180, and DISPERBYK-184 were diluted with deionized water, and then mixed and stirred for 30 minutes;

[0037] (2) Use a ball mill to grind and disperse for 2 hours, and mix well;

[0038] (3) After grinding, slowly add the remaining polyester-modified acrylic resin, thermoplastic acrylic resin, and TEGO Glide 482, and continue to stir for 30 minutes;

[0039] (4) Slowly add blocked polyisocyanate, then add the remaining deionized water, and continue stirring for 1 hour.

[0040] The coating liquid is uniformly coated on the surface of the polyester film through a slit coating head, and a coating with a thickness of...

Embodiment 3

[0042] Raw materials: polyester modified acrylic resin 21%, thermoplastic acrylic resin 7%, blocked polyisocyanate 6%, DISPERBYK-184 2.1%, TEGO Glide 410 1.0%, TEGO Glide 482 0.4%, rutile TiO 2 18%, the balance of deionized water.

[0043] Preparation:

[0044] (1) First add 1 / 2 of the formula content of polyester modified acrylic resin, rutile TiO 2 , DISPERBYK-184 were diluted with deionized water, and then mixed and stirred for 30 minutes;

[0045] (2) Use a ball mill to grind and disperse for 2 hours, and mix well;

[0046] (3) After grinding, slowly add the remaining polyester-modified acrylic resin, thermoplastic acrylic resin, TEGO Glide 410, and TEGO Glide 482 respectively, and continue stirring for 30 minutes;

[0047] (4) Slowly add blocked polyisocyanate, then add the remaining deionized water, and continue stirring for 1 hour.

[0048] The coating liquid is uniformly coated on the surface of the polyester film through a slit coating head, and a coating with a t...

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Abstract

The invention belongs to the technical field of off-line coating of polyester films, and specifically relates to an aqueous coating solution for polyester films with high weather resistance, humidity and heat resistance and a preparation method thereof. The aqueous coating solution is composed of the following components by weight percentage: the main body Resin 24-32%, curing agent 4-8%, wetting and dispersing agent 1.5-3.0%, leveling agent 0.8-2.5%, ultraviolet absorber 15-20%, deionized water balance. Polyester modified acrylic resin has good flexibility and very low shrinkage, and has good adhesion on plastics. Thermoplastic acrylic resin has good weather resistance, gloss and color retention, water resistance and acid and alkali resistance. Mixing polyester-modified acrylic resin and thermoplastic acrylic resin as the main resin of the present invention can effectively improve the adhesion of the coating liquid on the polyester film, reduce the holes caused by shrinkage, and further improve the weather resistance of the polyester film , moisture resistance, etc., which can meet the needs of long-term outdoor use.

Description

technical field [0001] The invention belongs to the technical field of off-line coating of polyester films, and in particular relates to an aqueous coating solution for polyester films with high weather resistance, humidity and heat resistance and a preparation method thereof. Background technique [0002] Due to its excellent physical and mechanical properties and good insulation properties, polyester film is widely used in photovoltaic and outdoor printing and advertising industries. Harsh environmental requirements pose severe challenges to the weather resistance of polyester films, which need to be able to meet the requirements of long-term outdoor use. In order to endow polyester films with good weather resistance and adapt to harsh and changeable environmental changes, the current industry Lijun achieves its weather resistance and other requirements by coating a layer of fluorocarbon resin or solvent-based non-fluorocarbon resin on the surface of the polyester film. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/04C09D7/63C09D7/61C08J7/04C08L67/00
CPCC09D133/04C09D7/63C09D7/61C08K2003/2241C08L2205/025C08J2367/00C08J2433/00C08J7/0427C08L33/04C08K3/22
Inventor 秦志凤王猛胡蓓蒙钊胡婧
Owner JIANGSU YUXING FILM TECH
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