UV/thermal dual-curing adhesive for solar photovoltaic back plate and preparation method of UV/thermal dual-curing adhesive

A solar photovoltaic, dual-curing technology, applied in the direction of polyurea/polyurethane adhesives, adhesive types, adhesives, etc., can solve the problems of irregular shape of the cured object, insufficient curing depth, uncurable shadows, etc., to avoid volatilization and thermal energy consumption, excellent comprehensive performance, and strong resistance to environmental erosion.

Active Publication Date: 2020-06-23
CHANGZHOU HUAKE POLYMERS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, light-curing adhesives also have some inherent disadvantages, such as insufficient curing depth, inability to cure shadow parts, and limited application when the cured object has irregular shapes.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A UV / heat dual-curing adhesive for solar photovoltaic backsheets, which is specifically composed of the following raw materials in proportions by weight: 50 parts of branched modified polyester acrylate, 5 parts of polycarbonate binary Alcohol, 5 parts of hyperbranched tackifying resin, 35 parts of reactive diluent, 2 parts of isocyanate compound, 2 parts of photoinitiator, 0.001 part of gel catalyst and 1 part of auxiliary agent, wherein branched Modified polyester acrylate is prepared from the following raw materials in parts by weight: 28 parts of aliphatic polybasic acid, 26 parts of aromatic dibasic acid, 23 parts of aliphatic glycol, 10 parts of alicyclic Dihydric alcohol, 6 parts of branched monomer, 7 parts of acrylic acid monomer, 0.02 part of catalyst and 0.2 part of polymerization inhibitor.

[0025] Wherein, the gel catalyst adopts dibutyltin dilaurate. The isocyanate compound is German Bayer N3390.

[0026] A kind of preparation method of UV / thermal dual-...

Embodiment 2

[0032] A UV / heat dual-curing adhesive for solar photovoltaic backsheets, which is specifically composed of the following raw materials in proportions by weight: 58 parts of branched modified polyester acrylate, 4 parts of polycarbonate binary Alcohol, 4 parts of hyperbranched tackifying resin, 27 parts of reactive diluent, 4 parts of isocyanate compound, 1.9 parts of photoinitiator, 0.001 part of gel catalyst and 1 part of auxiliary agent, wherein branched Modified polyester acrylate is prepared from the following raw materials in parts by weight: 25 parts of aliphatic polybasic acid, 30 parts of aromatic dibasic acid, 20 parts of aliphatic dibasic alcohol, 12 parts of alicyclic Dihydric alcohol, 6 parts of branched monomer, 7 parts of methacrylic acid monomer, 0.02 part of catalyst and 0.2 part of polymerization inhibitor. Wherein, the gel catalyst adopts stannous octoate. The isocyanate compound uses Covestro N3300.

[0033] A kind of preparation method of UV / thermal dual-...

Embodiment 3

[0039] A UV / heat dual-curing adhesive for solar photovoltaic backsheets, which is specifically composed of the following raw materials in proportions by weight: 66 parts of branched modified polyester acrylate, 2 parts of polycarbonate binary Alcohol, 2 parts of hyperbranched tackifying resin, 23 parts of reactive diluent, 4 parts of isocyanate compound, 2 parts of photoinitiator, 0.001 part of gel catalyst and 1 part of auxiliary agent, wherein branched Modified polyester acrylate is prepared from the following raw materials in parts by weight: 20 parts of aliphatic polybasic acid, 32 parts of aromatic dibasic acid, 25 parts of aliphatic dibasic alcohol, 9 parts of alicyclic Dihydric alcohol, 6 parts of branched monomer, 7 parts of acrylic acid monomer, 0.02 part of catalyst and 1 part of polymerization inhibitor.

[0040] Wherein, the gel catalyst adopts a mixture of dibutyltin diacetate and dialkyltin dimaleate. The isocyanate compound uses Covestro N3300.

[0041] A kind...

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PUM

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Abstract

The invention relates to a UV / thermal dual-curing adhesive for a solar photovoltaic backboard and a preparation method thereof. The UV / thermal dual-curing adhesive for the solar photovoltaic back plate is formed by combining the following raw materials in parts by weight: 50-70 parts of branched modified polyester acrylate, 1-5 parts of polycarbonate diol, 1-5 parts of hyperbranched tackifying resin, 20-40 parts of an active diluent, 1-5 parts of a polyfunctional isocyanate compound, 0.1-2 parts of a photoinitiator, 0.001 part of a gel catalyst and 1-2 parts of an assistant. The UV / thermal dual-curing adhesive for the solar photovoltaic back plate has the characteristics of low curing shrinkage rate, low expansion coefficient, no precipitation and the like, can be cured by ultraviolet radiation, and can be further cured at a low temperature in places which cannot be irradiated by ultraviolet rays after being fixed. The product prepared by the invention is suitable for interlayer bonding of the solar photovoltaic back plate, has good bonding strength and environmental erosion resistance, and is effectively improved in weather resistance and aging resistance.

Description

technical field [0001] The invention relates to the field of adhesive technology, in particular to a UV / heat dual-curing adhesive for a solar photovoltaic backplane and a preparation method thereof. Background technique [0002] In photovoltaic modules, solar photovoltaic backsheets are usually installed to protect the long-term performance of solar cells, which requires the backsheet to have excellent weather resistance, heat resistance, hydrolysis resistance, and moisture barrier properties for a long time. Most of the common photovoltaic backplanes adopt a "sandwich" structure, that is, a three-layer film structure of fluorine film / PET / fluorine film, and a layer of adhesive is used to bond each layer of film, so the performance of the adhesive plays a key role in the backplane. The effect directly affects the life of the backplane and even the components. [0003] The interlayer bonding of solar photovoltaic backsheets is usually done using solvent-based adhesives, melt-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J167/06C09J175/04H01L31/048
CPCC09J167/06H01L31/0481C08L2205/03C08L2201/08C08L2203/204Y02E10/50
Inventor 赵银蒋红娟王炳珅周锋杨子
Owner CHANGZHOU HUAKE POLYMERS
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