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Double-component adhesive for adhesion of solar backboard multi-layer film

An adhesive, two-component technology, applied in the directions of adhesives, adhesive types, adhesive additives, etc., can solve the problems of oxidative fading, shortened component life, and decreased electrical performance of solar cell components, achieving long shelf life, improved Aging resistance, the effect of improving insufficient weather resistance

Active Publication Date: 2017-11-24
SHANGHAI WEIKAI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the use of EVA glue, it will slowly change under the action of ultraviolet rays, high temperature, moisture and oxygen. The main phenomena are discoloration, oxidative fading, delamination and acetic acid production. The existence of these aging phenomena will make solar cells The electrical properties of the components continue to decline, affecting the performance of the solar cell backplane and shortening the life of the components

Method used

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  • Double-component adhesive for adhesion of solar backboard multi-layer film
  • Double-component adhesive for adhesion of solar backboard multi-layer film
  • Double-component adhesive for adhesion of solar backboard multi-layer film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This example relates to a two-component adhesive used for bonding multilayer films on solar backplanes, and the specific component contents are shown in the following table:

[0032]

[0033] The using method of described two-component adhesive comprises the following steps:

[0034] (1) Stir polyester polyol, polycarbonate polyol, epoxy resin, silane coupling agent, anti-hydrolysis agent, catalyst, and solvent at room temperature for 1 hour according to the composition listed above to obtain component A.

[0035] (2) Dilute component A to 20% solid content with ethyl acetate or butanone, mix it with component B at a pure solid ratio of 15:1, dry at 85 degrees for 1 min after coating, and then compound.

[0036] (3) Mature the compounded material for 3 days in an environment of 50 degrees.

Embodiment 2

[0038] This example relates to a two-component adhesive used for bonding multilayer films on solar backplanes, and the specific component contents are shown in the following table:

[0039]

[0040]

[0041] The using method of described two-component adhesive comprises the following steps:

[0042] (1) Stir polyester polyol, polycarbonate polyol, epoxy resin, silane coupling agent, anti-hydrolysis agent, catalyst, and solvent at room temperature for 1 hour according to the composition listed above to obtain component A.

[0043] (2) Dilute component A to 20% solid content with ethyl acetate or butanone, mix it with component B at a pure solid ratio of 15:1, dry at 85 degrees for 1 min after coating, and then compound.

[0044] (3) Mature the compounded material for 3 days in an environment of 50 degrees.

Embodiment 3

[0046] This example relates to a two-component adhesive used for bonding multilayer films on solar backplanes, and the specific component contents are shown in the following table:

[0047]

[0048] The using method of described two-component adhesive comprises the following steps:

[0049](1) Stir polyester polyol, polycarbonate polyol, epoxy resin, silane coupling agent, anti-hydrolysis agent, catalyst, and solvent at room temperature for 1 hour according to the composition listed above to obtain component A.

[0050] (2) Dilute component A to 25% solid content with ethyl acetate or methyl ethyl ketone, mix it with component B at a pure solid ratio of 10:1, dry at 100 degrees for 45 minutes after coating, and then compound.

[0051] (3) Mature the compounded material for 2 days in an environment of 60 degrees.

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Abstract

The invention provides a double-component adhesive for adhesion of a solar backboard multi-layer film. The double-component adhesive comprises a component A and a component B, wherein the component A comprises the following components in parts by weight: 30 to 45 parts of polyester polyol, 3 to 10 parts of polycarbonate polyol, 2 to 5 parts of epoxy resin, 0.2 to 1.5 parts of a silane coupling agent, 0.2 to 1 part of an anti-hydrolysis agent, 50 to 60 parts of a solvent and 0.01 to 0.10 part of a catalyst; the component B comprises at least one of a monomer and a tripolymer of polyisocyanate; and the pure solid content ratio of the component A to the component B is from 10:1 to 20:1. The main agents and the curing agent of the double-component adhesive are stored separately, so that the shelf life is long; and through crosslinking solidification of the polyester polyol and the polyisocyanate, the solidified adhesive film is transparent, odorless and elastic, and the adhesive layer has higher adhesion strength and ageing resistance.

Description

technical field [0001] The invention relates to the field of two-component adhesives, in particular to a two-component adhesive used for bonding multilayer films of solar back panels. Background technique [0002] The solar backsheet is located on the back of the solar panel, which protects and supports the battery sheet, and has reliable insulation, water resistance, and aging resistance. The currently widely used solar backsheet has a three-layer structure (PVDF / PET / PVDF), the outer protective layer PVDF has good environmental erosion resistance, the middle layer is PET polyester film with good insulation properties, PVDF and PET pass through EVA (copolymer of ethylene and vinyl acetate) bonding. During the use of EVA glue, it will slowly change under the action of ultraviolet rays, high temperature, moisture and oxygen. The main phenomena are discoloration, oxidative fading, delamination and acetic acid production. The existence of these aging phenomena will make solar c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J163/00C09J11/06C08G18/42C08G18/44C08G18/76H01L31/049
CPCC08G18/42C08G18/44C08G18/7671C08K5/5425C08K5/5435C08K5/548C09J11/06C09J163/00H01L31/049Y02E10/50
Inventor 董海普张钰馨王玉春
Owner SHANGHAI WEIKAI CHEM