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Water-based paint, adhesive film and application of adhesive film in battery assembly

A water-based coating and film technology, applied in electrical components, coatings, circuits, etc., can solve problems such as battery cracks, cracks, etc., to offset mechanical stress or thermal stress, improve overall flexibility, and avoid battery cracks or cracks. The effect of the splinter problem

Active Publication Date: 2021-11-30
ZHEJIANG FORST NEW MATERIAL RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to provide a water-based coating, adhesive film and its application in battery components, so as to solve the problem of battery cracks that are easy to occur when the adhesive film packaging materials in the prior art meet the appearance and performance of battery components. or fragmentation problem

Method used

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  • Water-based paint, adhesive film and application of adhesive film in battery assembly
  • Water-based paint, adhesive film and application of adhesive film in battery assembly
  • Water-based paint, adhesive film and application of adhesive film in battery assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Coating layer: by weight parts, water-based coating formula:

[0050] Reagent number of copies resin emulsion POE Emulsion (Dow Chemical) 100 viscosifying emulsion U54 (Covestro) 35 crosslinking agent EO3-TMPTA (Sartomer) 3 auxiliary crosslinking agent tert-Butyl peroxyisopropyl carbonate 3 adhesion promoter 6654 (Guangzhou Siluoke) 3 Defoamer / Thickener / Antioxidant Byk023 / BYK410 / 1076 1 / 1 / 3

[0051] Among them, the resin emulsion is 100 parts by weight of ethylene-octene copolymer (MFR: 5g / 10min; the mass fraction of octene is 38%), adding 2 parts by weight of emulsifier emulsogen cle 070 (Klein), 150 ° C After melt extrusion, an aqueous dispersion of 2 parts by weight of water, 0.3 parts by weight of KOH was added to the blended product, and then the POE resin emulsion with a solid content of 40 wt% was further diluted subsequently.

[0052] Substrate layer: The POE adhesive film with conventional patterned...

Embodiment 2

[0056] Coating layer: by weight parts, water-based coating formula:

[0057] Reagent number of copies resin emulsion EVA emulsion (Dow Chemical) 100 viscosifying emulsion VAE 143 (Celanese) 20 crosslinking agent PETA (Sartoma) 1 auxiliary crosslinking agent tert-Butyl peroxyisopropyl carbonate 1 Defoamer / Thickener / Antioxidant Byk023 / BYK410 / 1076 1 / 1 / 3

[0058] Wherein, the resin emulsion is 100 parts by weight of ethylene-vinyl acetate copolymer (the mass fraction of vinyl acetate is 33%), adding 2 parts by weight of emulsifier emulsogen cle 070 (Klein), after 150 ℃ of melt extrusion, An aqueous dispersion of 5 parts by weight of water, 0.5 parts by weight of KOH was added to the blended product, and then the EVA resin emulsion with a solid content of 50 wt% was further diluted subsequently.

[0059] Substrate layer: The conventional patterned white EVA film is irradiated and cross-linked, the pre-cross-linking degree is...

Embodiment 3

[0063] Coating layer: by weight parts, water-based coating formula:

[0064] Reagent number of copies resin emulsion POE Emulsion (Dow Chemical) 100 viscosifying emulsion U54 (Covestro) 10 adhesion promoter 6207 (Guangzhou Siluoke) 2

[0065] Among them, the resin emulsion is 100 parts by weight of ethylene-octene copolymer (MFR: 5g / 10min; the mass fraction of octene is 38%), adding 2 parts by weight of emulsifier emulsogen cle 070 (Klein), 150 ° C After melt extrusion, an aqueous dispersion of 5 parts by weight of water, 0.5 parts by weight of triethylamine was added to the blended product, and then the POE resin emulsion with a solid content of 60 wt% was further diluted subsequently.

[0066] Substrate layer: The conventional patterned structure white POE film is cross-linked by irradiation, the pre-cross-linking degree is 30% in the test, and the POE film with a thickness of 0.5mm is obtained by winding.

[0067] Film preparation:...

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Abstract

The invention provides a water-based paint, an adhesive film and application of the adhesive film in a battery assembly. The water-based paint comprises the following components in parts by weight: 100 parts of resin emulsion and 5-50 parts of tackifying emulsion. In the actual application process, the water-based paint can be smeared on an existing battery piece packaging adhesive film, and the overall flexibility of the adhesive film can be effectively improved. Meanwhile, the water-based paint has polarity adaptive to the existing battery packaging adhesive film, can be well combined with the existing battery packaging adhesive film, and can be fully spread on the existing battery packaging adhesive film. When the adhesive film is subsequently smeared on the existing EVA / POE base material to be used as a battery component packaging adhesive film, the excellent flexibility of the adhesive film can effectively counteract mechanical stress or thermal stress generated in the processing and using process of a battery component, and the problem of subfissure or cracking of a battery is effectively avoided.

Description

technical field [0001] The invention relates to the field of photovoltaics, in particular to a water-based coating, an adhesive film and their application in battery components. Background technique [0002] In the field of photovoltaics, with the thinning of the cell itself, the application of new technologies such as multi-busbars, and the thickening of the ribbon or the development of the circular welding process, the flexibility of the adhesive film packaging material is critical when making battery components. Sex requirements are also increasing. The white EVA / POE film in the prior art usually adopts low melt index or pre-crosslinking technology to solve the problem of poor laminated appearance such as overflowing white, but this will lead to insufficient flexibility of the white EVA / POE film. Then, when a new type of battery or a new type of ribbon is used, the battery is prone to cracks or splits. Therefore, it is necessary to provide a packaging material that can ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/02C09D4/06C09J7/10C09J123/08H01L31/048
CPCC09D4/06C09J7/10C09J123/0815C09J123/0853H01L31/0481Y02E10/50
Inventor 梅云宵杨楚峰金大钺邓伟
Owner ZHEJIANG FORST NEW MATERIAL RES INST CO LTD