Thermal insulation EVA adhesive film and preparation method thereof

A film and coating technology, applied in the direction of adhesives, film/sheet adhesives, coatings, etc., to achieve low light reflectivity, warm in winter and cool in summer, and achieve the effect of warm in winter and cool in summer

Active Publication Date: 2015-12-09
东莞市友联亨达光电有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problem that the thermal insulation performance of the existing EVA adhesive film needs to be further improved, and provides a thermal insulation EVA adhesive film that can undergo reversible mutations in the optical transmission performance in the infrared region, and the thermal insulation EVA adhesive film preparation method

Method used

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  • Thermal insulation EVA adhesive film and preparation method thereof
  • Thermal insulation EVA adhesive film and preparation method thereof
  • Thermal insulation EVA adhesive film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] This embodiment provides a heat-insulating EVA film and a method for preparing a heat-insulating EVA film. The specific steps are as follows:

[0025] 60g modified powder (W doped with VO 2 , the amount of substance in W is VO 2 2% of the amount of the substance), 10g of a wetting dispersant (TDL-ND1) and 130g of ethyl acetate were stirred evenly to obtain a premix. Add the premix to the pin-type sand mill, and add 0.2mm yttrium-modified zirconia beads to the sand mill, control the temperature of the premix to be equal to or lower than 38°C, and the stirring speed to be 1200RPM. The grinding time is 2-4 hours, and the particle size of the premix is ​​sampled every 30 minutes of grinding, and the particle size of the premix is ​​ground to 25 nm to obtain a slurry. (In the slurry, the quality of the modified powder accounts for 30%, the quality of the dispersant accounts for 5%, and the quality of ethyl acetate accounts for 65%.)

[0026] Stir 790g of EVA ink and 10g o...

Embodiment 2

[0030] This embodiment provides a heat-insulating EVA film and a method for preparing a heat-insulating EVA film. The specific steps are as follows:

[0031] 60g modified powder (W doped with VO 2 , the amount of substance in W is VO 2 2% of the amount of the substance), 10g of a wetting dispersant (TDL-ND1) and 130g of ethyl acetate were stirred evenly to obtain a premix. Add the premix to the pin-type sand mill, and add 0.2mm yttrium-modified zirconia beads to the sand mill, control the temperature of the premix to be equal to or lower than 38°C, and the stirring speed to be 1200RPM. The grinding time is 2-4 hours, and the particle size of the premix is ​​sampled every 30 minutes of grinding, and the particle size of the premix is ​​ground to 25 nm to obtain a slurry. (In the slurry, the quality of the modified powder accounts for 30%, the quality of the dispersant accounts for 5%, and the quality of ethyl acetate accounts for 65%.)

[0032] Stir 780g of EVA ink and 20g o...

Embodiment 3

[0036] This embodiment provides a heat-insulating EVA film and a method for preparing a heat-insulating EVA film. The specific steps are as follows:

[0037] 75g modified powder (Ta and W co-doped VO 2 , the amount of substance in W is VO 2 0.6% of the amount of substance, the amount of substance of Ta is VO 20.2% of the amount of the substance), 24g of a wetting dispersant (EFKA-4310) and 201g of ethyl acetate were stirred evenly to obtain a premix. Add the premix to the pin-type sand mill, and add 0.2mm yttrium-modified zirconia beads to the sand mill, control the temperature of the premix to be equal to or lower than 38°C, and the stirring speed to be 1200RPM. The grinding time is 2-4 hours, and the particle size of the premix is ​​sampled every 30 minutes of grinding, and the particle size of the premix is ​​ground to 25 nm to obtain a slurry. (In the slurry, the quality of the modified powder accounts for 25%, the quality of the dispersant accounts for 8%, and the qual...

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Abstract

The invention relates to the technical field of thermal insulation materials, in particular to a thermal insulation EVA adhesive film and a preparation method thereof. According to the preparation method, by using modified powder taking vanadium dioxide as a base body, doping a proper amount of other metallic elements and matching with a proper amount of other accessory ingredients and coating matrix, the phase-transition temperature of the vanadium dioxide in a prepared functional layer is reduced to not more than 36 DEG C to realize that the optical transmission performance in an infrared light area has reversible mutation, so that the transmittance of near infrared ray of the EVA adhesive film can be intelligently adjusted and controlled, wherein when the temperature is above 36 DEG C, infrared rejection is controlled to be not less than 90 percent, and when the temperature is below 36 DEG C, the infrared rejection is controlled to be not more than 50 percent, high visible light transmittance and low luminous reflectance are guaranteed, and the phenomenon that traditional LOW-E glass is prone to generate light pollution does not exist. By using the thermal insulation EVA adhesive film prepared through the preparation method to make EVA sandwich glass and applying the glass into a glass curtain wall or doors and windows, the aim of getting warm in winter and cool in summer can be better realized, and the glass is especially suitable for the northern area of China.

Description

technical field [0001] The invention relates to the technical field of heat insulating materials, in particular to a heat insulating EVA adhesive film and a preparation method thereof. Background technique [0002] In the 21st century, with the depletion of energy and the deterioration of the environment, the governments of various countries have higher and higher requirements for energy conservation and emission reduction, and people urgently need more energy-saving and environmentally friendly green products. At present, Low-e laminated glass (such as EVA laminated glass) is the most used to make curtain walls or doors and windows. Although it has the effect of warming in winter and cooling in summer, it still has the defects of light pollution and low service life. [0003] In addition, it is known that under low temperature conditions, vanadium dioxide films have high transmittance in visible light, infrared light, radio frequency bands and microwave bands, but at high t...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C09J7/00C09J123/08C09D123/08C09D7/12
Inventor李衡均余力
Owner东莞市友联亨达光电有限公司