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Application of anionic acrylate or acrylamide compound, anti-PID EVA adhesive film and preparation method of anti-PID EVA adhesive film

A technology of acrylamide and acrylate, applied in the direction of non-polymer organic compound adhesives, film/sheet without carrier, non-polymer adhesive additives, etc., which can solve the risk of component packaging yield reduction and aging delamination High, aluminum oxide passivation layer effect failure and other problems, to achieve the effect of reducing power loss, improving anti-PID performance, improving stability and product performance stability

Inactive Publication Date: 2021-06-15
CSI SOLAR POWER GROUP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The positive electric field will seriously affect the electronegative properties of alumina, and make the passivation layer of alumina invalid, which will lead to a significant decrease in the power generation efficiency of the cell, resulting in a serious PID (potential-induced decay) phenomenon
[0004] For double-sided cells using alumina passivation technology, the traditional EVA photovoltaic module encapsulation film has poor resistance to PID attenuation, and the back power attenuation reaches 20-40% under the conditions of -1500V, 85% RH, and 85°C aging for 192h between, the front side also exceeds the 5% power attenuation
In order to solve the PID problem, double-sided double-glass modules are now generally packaged with POE film, but this will bring new problems: POE film is prone to bubbles, slipping and lamination problems during the module lamination process, which will lead to The yield rate of component packaging is reduced; the cost of POE film is more expensive than that of EVA film, which will increase the cost of component manufacturing; moreover, the risk of aging and delamination of components packaged with POE film is higher than that of components packaged with EVA film, and the reliability is poor

Method used

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  • Application of anionic acrylate or acrylamide compound, anti-PID EVA adhesive film and preparation method of anti-PID EVA adhesive film
  • Application of anionic acrylate or acrylamide compound, anti-PID EVA adhesive film and preparation method of anti-PID EVA adhesive film
  • Application of anionic acrylate or acrylamide compound, anti-PID EVA adhesive film and preparation method of anti-PID EVA adhesive film

Examples

Experimental program
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Effect test

Embodiment 1

[0053] The present embodiment provides a kind of anti-PID type EVA adhesive film, comprises the component of following parts by weight:

[0054]

[0055]

[0056] The preparation method of this anti-PID type EVA film is as follows:

[0057] (1) First heat the mixing tank to 65°C, add the initiator, anti-polarization auxiliary agent, auxiliary crosslinking agent, silane coupling agent and ultraviolet light stabilizer into the mixing tank in sequence according to the proportion, stir and mix After 30 min, the melt-mixed additives were discharged into the material bucket, cooled to normal temperature, and the mixed additives were obtained;

[0058] (2) First heat the horizontal mixer to 45°C, then add the measured EVA resin into the horizontal mixer, stir for 10 minutes, and then spray the mixing aid obtained in step (1) onto the In the EVA resin, stir while spraying, the spraying time is 15 minutes; after spraying, stir for 30 minutes to make the additive completely absor...

Embodiment 2

[0061] The present embodiment provides a kind of anti-PID type EVA adhesive film, comprises the component of following parts by weight:

[0062] EVA resin 7670H 100 copies Initiator tert-Amyl Peroxy 2-Ethylhexyl Acid 0.6 parts anti-polarization additive N-Methylol-2-acrylamide 0.5 parts auxiliary crosslinking agent Ethoxylated Trimethylolpropane Triacrylate 0.6 parts A silane coupling agent Vinyltriacetoxysilane 0.25 parts UV stabilizer Tris(1,2,2,6,6-pentamethyl-4-piperidinyl) phosphite 0.2 parts

[0063] The preparation method of this anti-PID type EVA film is as follows:

[0064] (1) First heat the mixing and stirring tank to 60°C, add the initiator, anti-polarization auxiliary agent, auxiliary crosslinking agent, silane coupling agent and ultraviolet light stabilizer into the mixing and stirring tank in sequence according to the proportion, and stir and mix After 60 min, the melt-mixed auxiliary agent was dischar...

Embodiment 3

[0068] The present embodiment provides a kind of anti-PID type EVA adhesive film, comprises the component of following parts by weight:

[0069] EVA resin Dupont 4260 100 copies Initiator 1,1'-bis(tert-butylperoxy)-3,3,5-trimethylcyclohexane 0.7 parts anti-polarization additive N-[tris(hydroxymethyl)methyl]acrylamide 0.4 parts auxiliary crosslinking agent Tripropenyl isocyanurate 0.7 parts A silane coupling agent γ-Methacryloxypropyltrimethoxysilane 0.3 parts UV stabilizer Bis(2,2,6,6-tetramethylpiperidinyl) sebacate 0.3 parts

[0070] The preparation method of this anti-PID type EVA film is as follows:

[0071] (1) First heat the mixing and stirring tank to 70°C, add the initiator, anti-polarization auxiliary agent, auxiliary crosslinking agent, silane coupling agent and ultraviolet light stabilizer into the mixing and stirring tank in sequence according to the proportion, and stir and mix After 20 min, the melt-mi...

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Abstract

The invention provides an application of an anionic acrylate or acrylamide compound, an anti-PID (Potential Induced Degradation) EVA (Ethylene Vinyl Acetate) adhesive film and a preparation method of the anti-PID EVA adhesive film. The anionic acrylate or acrylamide compound is used for resisting the PID effect of a photovoltaic module. The anti-PID EVA adhesive film comprises the following components in parts by weight: 100 parts of EVA resin, 0.4-1.5 parts of an initiator, 0.1-2 parts of an anti-polarization auxiliary agent and 0.5-2 parts of an assistant cross-linking agent, wherein the anti-polarization auxiliary agent is an anionic acrylate and / or acrylamide compound. The EVA adhesive film provided by the invention can partially eliminate a positive electric field formed by aggregation of sodium ions and potassium ions on the surface of a solar cell, protect the passivation function of an aluminum oxide layer of the cell, and effectively relieve the PID phenomenon of a photovoltaic module.

Description

technical field [0001] The invention belongs to the technical field of photovoltaic modules, and in particular relates to the use of an anionic acrylate or acrylamide compound, an anti-PID EVA adhesive film and a preparation method thereof. Background technique [0002] "Cost reduction, efficiency increase, grid parity" has gradually become a consensus in the photovoltaic industry, which has further accelerated the research and development and application of new photovoltaic module technologies, and at the same time allowed some new reserve technologies and products to enter the market ahead of schedule, and double-sided double-glass modules are one of them. one. From the analysis of the income of the power station, the double-sided double-glass module can achieve 10% additional issuance, which greatly improves the overall investment return rate. Double-sided double-glass modules will be a development trend in the future, and it is also one of the means for enterprises to r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J4/02C09J4/06C09J11/06C09J7/10C09J7/30H01L31/048
CPCC09J4/06C09J11/06C09J7/10C09J7/30H01L31/0481Y02E10/50
Inventor 金旭张定忠陈荣黄冰艳张乾
Owner CSI SOLAR POWER GROUP CO LTD
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