Short-wave ultraviolet pre-crosslinking adhesive film and preparation method thereof

An ultraviolet light and pre-crosslinking technology, which is applied in the field of solar cells, can solve the problems of reducing white film overflow and wrinkling, incomplete absorption, and easy generation of bubbles, etc., to achieve high photoelectric conversion rate and packaging formability, control Convenience and the effect of prolonging the service life

Pending Publication Date: 2022-08-05
SUZHOU MINGGUAN NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Patent CN108997957A discloses a white EVA packaging adhesive film and its preparation method. After the white EVA packaging adhesive film is irradiated by an ultraviolet lamp in the 300-400nm band, the photoinitiator is excited by the 300-400nm band to obtain a cross-linking degree 10-60% pre-crosslinked adhesive film, which effectively reduces the whitening and wrinkling of the white adhesive film, but there is a deficiency in this technical solution: when the white EVA packaging adhesive film passes through 300-400nm, part of the ultraviolet band will be Among them, the absorption of the light stabilizer will easily cause two negative effects: 1. The light stabilizer in the film will be attenuated partly when it absorbs the ultraviolet band, which will affect the long-term aging of the component; 2. The photoinitiator in the film has no Completely absorbs the ultraviolet band, resulting in incomplete reaction and residue, and easy to generate bubbles during the component molding stage

Method used

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  • Short-wave ultraviolet pre-crosslinking adhesive film and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A short-wave ultraviolet light pre-crosslinked adhesive film, comprising the following raw materials in parts by weight: 90 parts of polymer resin, 0.2 part of short-wave ultraviolet light initiator, 0.2 part of thermal initiator, 0.5 part of cross-linking assistant, and 0.1 part of coupling agent , 0.01 part of light stabilizer, 0.01 part of ultraviolet absorption auxiliary, 0.001 part of antioxidant and 10 parts of color masterbatch.

[0024] The polymer resin is EVA resin; the antioxidant is 3,5-di-tert-butyl-4-hydroxybenzylphosphonic acid.

[0025] The short-wave ultraviolet light initiator is 4-methylbenzophenone. The thermal initiator is tert-butyl peroxy-2-ethylhexyl carbonate.

[0026] The crosslinking assistant is triallyl isocyanurate; the color masterbatch is white masterbatch. The coupling agent is a vinyl silane coupling agent.

[0027] The light stabilizer is composed of bis-2,2,6,6-tetramethylpiperidinol sebacate, N,N'-bis-(2,2,6,6-tetramethyl-4- pipe...

Embodiment 2

[0033] A short-wave ultraviolet light pre-crosslinked adhesive film, comprising the following raw materials in parts by weight: 100 parts of polymer resin, 1.1 parts of short-wave ultraviolet light initiator, 1.1 parts of thermal initiator, 3 parts of cross-linking assistant, and 0.6 part of coupling agent , 0.3 parts of light stabilizer, 0.3 parts of ultraviolet absorption auxiliary, 0.3 parts of antioxidant and 15 parts of color masterbatch.

[0034] The polymer resin is EVA resin; the antioxidant is tris(2,4-di-tert-butylphenyl) phosphite.

[0035] The short-wave ultraviolet light initiator is methyl o-benzoyl benzoate. The thermal initiator is ethyl 3,3-di(tert-butylperoxy)butyrate.

[0036] The cross-linking assistant is triallyl cyanurate; the color masterbatch is white masterbatch. The coupling agent is an aminohydrocarbyl silane coupling agent.

[0037] The light stabilizer is composed of bis-2,2,6,6-tetramethylpiperidinol sebacate, N,N'-bis-(2,2,6,6-tetramethyl-4- ...

Embodiment 3

[0043] A short-wave ultraviolet light pre-crosslinked adhesive film, comprising the following raw materials by weight: 110 parts of polymer resin, 2 parts of short-wave ultraviolet light initiator, 2 parts of thermal initiator, 5 parts of cross-linking assistant, and 1 part of coupling agent , 0.5 part of light stabilizer, 0.5 part of ultraviolet absorption auxiliary, 0.5 part of antioxidant and 20 parts of color masterbatch.

[0044] The polymer resin is EVA resin; the antioxidant is 3,5-di-tert-butyl-4-hydroxybenzylphosphonic acid.

[0045] The short-wave ultraviolet light initiator is 1-hydroxycyclohexyl phenyl ketone; the thermal initiator is 1,1-di(tert-butylperoxy)cyclohexane.

[0046] The crosslinking assistant is trimethylolpropane triacrylate; the color masterbatch is white masterbatch. The coupling agent is a vinyl silane coupling agent.

[0047] The light stabilizer is composed of bis-2,2,6,6-tetramethylpiperidinol sebacate, N,N'-bis-(2,2,6,6-tetramethyl-4- piper...

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Abstract

The invention relates to the technical field of solar cells, in particular to a short-wave ultraviolet pre-crosslinking adhesive film and a preparation method thereof. Comprising the following raw materials in parts by weight: 90-110 parts of polymer resin, 0.2-2 parts of a short-wave ultraviolet light initiator, 0.2-2 parts of a thermal initiator, 0.5-5 parts of a crosslinking aid, 0.1-1 part of a coupling agent, 0.01-0.5 part of a light stabilizer, 0.01-0.5 part of an ultraviolet absorption aid, 0-0.5 part of an antioxidant and 10-20 parts of color master batch. According to the short-wave ultraviolet light pre-crosslinking adhesive film, the short-wave ultraviolet light initiator is added, so that the adhesive film is pre-crosslinked under the short-wave ultraviolet light condition, on one hand, the auxiliary agent fully initiates reaction under the short-wave ultraviolet light to reach a certain pre-crosslinking degree, and on the other hand, the light stabilizing auxiliary agent in the adhesive film cannot be attenuated; when the composite material is used in a solar cell, the photoelectric conversion rate and the packaging formability of a cell module can be improved, and the service life can be prolonged.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a short-wave ultraviolet light pre-crosslinked adhesive film and a preparation method thereof. Background technique [0002] With the continuous development of society, environmental pollution and energy shortage have become the biggest challenges facing human beings. Using solar cells to convert clean and renewable solar energy into electricity is one of the most effective ways to solve these two problems. Increasing the power generation of modules has also increasingly become the research and development direction of the photovoltaic industry. At present, by replacing the transparent film on the back with a white high-reflectivity film, the absorption of the long-wavelength wavelength by the photovoltaic modules is increased to increase the power generation of the cells. 0.5-1.5% component power. [0003] Patent CN108997957A discloses a white EVA encapsulation film and its...

Claims

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Application Information

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IPC IPC(8): C09J7/10C09J7/30C09J123/08C09J11/00C09J11/06H01L31/048
CPCC09J7/10C09J7/30C09J123/0853C09J11/00C09J11/06H01L31/0481C09J2203/33C08K5/07C08K5/3435C08K5/3492C08K5/101Y02E10/52
Inventor 王有富李娜方艳邱骏张鹏
Owner SUZHOU MINGGUAN NEW MATERIAL TECH CO LTD
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