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Photocuring liquid adhesive film composition and application thereof

A liquid adhesive film and light-curing technology, which is applied in the direction of film/sheet without carrier, adhesive, photovoltaic power generation, etc., can solve the problem that the lamination curing time cannot be greatly reduced, the production cycle and cost are increased, and the adhesive film and glass are bonded Insufficiency and other problems, to achieve the effect of shortening the production cycle, improving production efficiency, and high elongation at break

Pending Publication Date: 2022-05-10
HANGZHOU KEWANG SPECIAL INK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All encapsulation polymers are thermoplastic materials and cross-linking reactions must occur during the lamination process, including pumping, heating, melting, inflating, lamination bonding (140-170°C / 15-30 minutes), curing, degassing , cooling and other multiple processes, each step must not be less, thus increasing the production cycle and cost
Despite great efforts, it has not been possible to significantly reduce the lamination cure time
In addition, because tempered glass often has warping defects such as wave bends and bow bends, the fluidity of the solid film is poor, and the bond between the film and the glass is often weak during the lamination process, resulting in local degumming or whitening.

Method used

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  • Photocuring liquid adhesive film composition and application thereof
  • Photocuring liquid adhesive film composition and application thereof
  • Photocuring liquid adhesive film composition and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] The formula of photocurable liquid adhesive film is:

[0056]

[0057] Glass shards production method: wash and dry glass with a thickness of 0.76 mm, crush and sieve to obtain glass particles with a particle size of 1-2 mm and a thickness of 0.76 mm.

[0058] Stir the components in the above formula evenly, vacuum defoam to obtain a light-curable liquid film composition, the refractive index is 1.518, preheat to 60°C, first apply the first layer of light-curable liquid film composition on the surface of the glass panel, The thickness of the coating is 0.76 mm. After laying the battery layer, apply the second layer of light-curable liquid adhesive film composition on the surface of the battery layer. The coating thickness is 0.76 mm, covering the glass back plate. After vacuum defoaming, UV light curing, the irradiation time is 110 seconds, irradiation energy 1800mj / cm 2 , get the packaged glass, install the leads and the frame to get the photovoltaic module.

Embodiment 2

[0060] The formula of photocurable liquid adhesive film is:

[0061]

[0062] Stir the components in the above formula evenly, and vacuum defoam to obtain a photocurable liquid film composition. The refractive index is 1.51. Preheat to 60°C. First, apply the first layer of photocurable liquid film composition on the surface of the glass panel. The thickness of the coating is 1.5 mm. After laying the battery layer, apply the second layer of light-curable liquid adhesive film composition on the surface of the battery layer. The coating thickness is 1.5 mm. Cover the glass back plate. Under the environment, the radiation energy is 250eV, and the packaged golden power generation glass is obtained, and the lead wire and frame are installed to obtain the photovoltaic module.

Embodiment 3

[0064] The formula of photocurable liquid adhesive film is:

[0065]

[0066] Stir the components in the above formula evenly, and vacuum defoam to obtain a photocurable liquid film composition with a refractive index of 1.52. Preheat to 60°C for coating. First, apply the first layer of photocurable liquid film composition on the glass On the surface of the panel, the thickness of the coating is 0.38 mm. After laying the battery layer, apply the second layer of photocurable liquid adhesive film composition on the surface of the battery layer. The thickness of the coating is 0.38 mm. , irradiation time 80 seconds, irradiation energy 1300mj / cm 2 , get the packaged power generation glass, install the leads and the frame to get the photovoltaic module.

[0067] Transparent photocurable resin particle D038 production method: the photocurable liquid film composition of Example 3 is coated into a film with a thickness of 0.38, and after vacuum defoaming, UV photocuring and photoc...

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Abstract

The invention discloses a light-cured liquid adhesive film composition and application thereof in a cold lamination packaging photovoltaic module. The light-cured liquid adhesive film composition comprises the following raw materials in percentage by mass: 45-90% of a photosensitive polymer; 5-70% of a photoactive monomer; 0-5% of a photosensitizer; 0.1-5% of transparent particles; 1-5% of an adhesion promoter; the photosensitive polymer is a photocuring polybutadiene polymer and / or a polyisoprene oligomer with the refractive index of 1.50 to 1.52; the photosensitizer is a free radical type or cationic macromolecular photosensitizer; the transparent particles are rigid or elastic solid particles, the refractive index of the transparent particles is 1.49-1.52, and the particle size of the transparent particles is 0.05-2.0 mm. The photocuring liquid adhesive film composition can replace a thermoplastic solid adhesive film to be used for lamination packaging of a photovoltaic module, the production period of the photovoltaic module can be greatly shortened, and the photovoltaic power generation cost is reduced.

Description

technical field [0001] The invention relates to solar photovoltaic module encapsulation adhesive film, in particular to a photocurable liquid adhesive film composition, which can be used for cold lamination encapsulation of photovoltaic modules. Background technique [0002] Photovoltaic cells are a new type of power generation system that uses the photovoltaic effect of materials to directly convert sunlight energy into electrical energy, including crystalline silicon (single crystal, polycrystalline) photovoltaic cells, thin film (cadmium telluride, copper indium gallium selenide) photovoltaic cells and Perovskite photovoltaic cells and several other varieties. [0003] The structure of photovoltaic cells consists of photovoltaic glass, transparent adhesive film (EVA, POE or PVB), battery sheet, adhesive film, and plastic backplane or tempered glass from top to bottom. Conventional photovoltaic modules are bonded with EVA or POE film, and the thickness is usually in the r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/14C09J11/08C09J11/04C09J7/10H01L31/048
CPCC09J175/14C09J11/08C09J11/04C09J7/10H01L31/0481C09J2203/322C09J2301/408C08K7/00C08L33/12C08L23/0815Y02E10/50
Inventor 何平何成坤何青青
Owner HANGZHOU KEWANG SPECIAL INK CO LTD
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