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Aging resistant EVA adhesive film capable of ultraviolet ray transmitting, and preparation method thereof

An anti-aging and ultraviolet technology, applied in adhesives, film/sheet adhesives, adhesive additives, etc., can solve the problems of poor weather resistance of EVA film, affecting light transmittance, reducing sunlight transmittance, etc. , to achieve the effects of avoiding aging, inhibiting activity, and good aging resistance

Inactive Publication Date: 2012-01-04
詹显光
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the existing EVA film has poor weather resistance, and is prone to yellowing under the irradiation of sunlight, which affects its own light transmittance, thereby reducing the light transmittance of sunlight and making the photoelectric conversion efficiency in photovoltaic modules low.
At present, some EVA films on the market have the characteristics of being able to transmit ultraviolet rays, but due to the limitations of existing technologies, their aging resistance is not ideal.

Method used

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  • Aging resistant EVA adhesive film capable of ultraviolet ray transmitting, and preparation method thereof
  • Aging resistant EVA adhesive film capable of ultraviolet ray transmitting, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] In terms of mass fraction, the content of EVA resin is 94%, the content of VA in the EVA resin is 26%, the melt flow rate is 30g / 10min, the hindered amine light stabilizer bis(2,2,6,6-tetra The content of methyl-4-piperidinyl) sebacate is 1.1% and the content of main antioxidant 2,6-di-tert-butyl-4-methylphenol is 1.1%, respectively mixed with 1% EVA resin , remelt, granulate, and make a masterbatch; the content of the remaining EVA resin and the crosslinking agent di-tert-butyl peroxide is 2.0%, and the content of the coupling agent γ-glycidyl etheroxypropyltrimethoxysilane is 1.8% were mixed with the obtained masterbatch to prepare the corresponding mixture; then the obtained mixture was melted through an extruder, and a film-like extruded product was extruded from the die, and the extruded product was passed through a pressure roller to be molded, pre-shrunk, cooled and shaped , winding, to obtain the finished EVA film.

[0055] The performance of this product is as...

Embodiment 2

[0063] In terms of mass fraction, the content of EVA resin is 96%, the content of VA in the EVA resin is 31%, and the melt flow rate is 40g / 10min, the hindered amine light stabilizer succinic acid and (4-hydroxyl-2, 2,6,6-tetramethyl-1-piperidinol) polycondensate content of 0.5% and main antioxidant 2,6-di-tert-butyl-4-ethylphenol content of 0.5% and 10% EVA resin is mixed, remelted and granulated to make a masterbatch; the content of the remaining EVA resin and crosslinking agent 3-(methacryloyloxy)propyltrimethoxysilane is 2.0%, coupling agent The content of γ-glycidyl etheroxypropyl trimethoxysilane is 1.0%, respectively mixed with the obtained masterbatch to prepare the corresponding mixture; then the obtained mixture is melted by an extruder, and a film-like extrudate is extruded from the die , the extruded product is subjected to pressure roller molding, pre-shrinking, cooling and shaping, and winding to obtain the finished EVA film.

[0064] The performance of this pro...

Embodiment 3

[0072] In terms of mass fraction, the content of EVA resin is 96%, the content of VA in EVA resin is 31%, and the melt flow rate is 40g / 10min. The hindered amine light stabilizer poly[4-(2,2,6, The content of 6-tetramethylpiperidinyl)-imino]-hexamethylene[4-(2,2,6,6-tetramethylpiperidinyl)-imino]ethylene is 0.5% and The content of main antioxidant 2,6-di-tert-butyl-4-methylphenol is 0.5%, mixed with 5% EVA resin respectively, remelted and granulated to make a masterbatch; the remaining EVA resin and cross-linked The content of the agent 3-(methacryloyloxy)propyltrimethoxysilane is 2.0%, the content of the coupling agent 3-(methacryloyloxy)propyltrimethoxysilane is 1.0%, and the obtained masterbatch Mix to prepare the corresponding mixture; then melt the obtained mixture through an extruder, extrude a film-like extrudate from the die head, and the extrudate passes through the pressure roller die, pre-shrinks, cools and shapes, and winds up to obtain the finished EVA film.

[...

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Abstract

The present invention provides an aging resistant EVA adhesive film capable of ultraviolet ray transmitting, and a preparation method thereof. The adhesive film comprises, by mass, 94-99% of EVA resin, 0.05-1.1% of a hindered amine light stabilizer, 0 .05-1.1% of an antioxidant, 0.1-1.8% of a coupling agent and 0.2-2.0% of a cross-linking agent, wherein the VA content in the EVA resin is 26-36%, the melt flow rate is (30-50) g per minute. Appropriate steps are adopted for the components of the adhesive film to prepare the aging resistant EVA adhesive film capable of the ultraviolet ray transmitting, wherein the film has the better ultraviolet ray transmitting effect and the better aging resistance.

Description

technical field [0001] The invention relates to an EVA adhesive film and a preparation method thereof, in particular to an aging-resistant EVA adhesive film capable of passing ultraviolet rays and a preparation method thereof. Background technique [0002] Photovoltaic module is a device that converts solar energy into electrical energy. Its structure is composed of tempered glass panel, EVA film, crystalline silicon cell, EVA film and TPT back plate from top to bottom. Among them, the crystalline silicon cell is a photoelectric conversion device, that is, a solar cell. If the crystalline silicon cell is directly exposed to the air, its photoelectric conversion efficiency will drop quickly and lose its practical value. Therefore, the crystalline silicon cell will use two layers The polymer packaging film encapsulates it, and the EVA film is the packaging material of the crystalline silicon cell. The crystalline silicon cell is bonded to the tempered glass panel and the TPT b...

Claims

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Application Information

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IPC IPC(8): C09J123/08C09J11/06C09J7/00
Inventor 詹显光
Owner 詹显光