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Polyester glue specially used for compounding PET (polyethylene terephthalate) film and PE (polyethylene) film of solar cell backboard and method for preparing same

A solar cell and film compounding technology, applied in the field of solar cells, can solve the problems of high weather resistance and composite strength of glue, which cannot meet such requirements, and achieve high composite peeling strength, simple method, and excellent barrier performance. Effect

Inactive Publication Date: 2012-07-25
安徽金兑新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The commonly used back film structures are TPT and TPE types, where P is PET, T is fluoroplastic film, and E is generally PE or EVA. The main glue between the layers of this type of back plate is compounded. In order to achieve a service life of more than 25 years, glue The weather resistance and composite strength requirements are relatively high, and general glues cannot meet this requirement.

Method used

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  • Polyester glue specially used for compounding PET (polyethylene terephthalate) film and PE (polyethylene) film of solar cell backboard and method for preparing same
  • Polyester glue specially used for compounding PET (polyethylene terephthalate) film and PE (polyethylene) film of solar cell backboard and method for preparing same

Examples

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Effect test

Embodiment 1

[0024] A special polyester glue for solar cell backplane PET and PE film compounding and preparation method thereof, wherein the polyester glue content is 20%; the ethyl acetate content is 76.8%; the curing agent content is 2%; polyester glue: curing Agent=10:1; antioxidant content is 0.2%; anti-UV agent content is 0.4%; leveling agent content is 0.4%; silane coupling agent content is 0.2%;

[0025] Add polyester glue, ethyl acetate, antioxidant, leveling agent, silane coupling agent, and anti-UV agent into the stirring tank according to the raw material formula. into a transparent solution; then add the curing agent into the stirring tank and continue stirring for 1 to 2 hours, and then the polyester glue can be prepared;

[0026] Coat the polyester glue on one side of the base layer of the PET film, dry it at a certain temperature, and the thickness of the dry glue is 8um, and then hot-press and compound the glue-coated surface of the PET film and the PE film layer at a cert...

Embodiment 2

[0028] A special polyester glue for solar cell backboard PET and PE film compounding and preparation method thereof, wherein the polyester glue content is 35%; the ethyl acetate content is 60%; the curing agent content is 3.5%; polyester glue: curing agent =10:1; the content of antioxidant is 0.4%, the content of anti-UV agent is 0.6%, the content of leveling agent is 0.3%; the content of silane coupling agent is 0.2%.

[0029] Add polyester glue, ethyl acetate, antioxidant, leveling agent, silane coupling agent, and anti-UV agent into the stirring tank according to the raw material formula. into a transparent solution; then add the curing agent into the stirring tank and continue stirring for 1 to 2 hours, and then the polyester glue can be prepared;

[0030] Coat the polyester glue on one side of the base layer of the PET film and dry it at a certain temperature. The thickness of the dry glue is 12um. The solar battery back sheet film can be prepared by aging.

[0031] Emb...

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Abstract

The invention relates to a polyester glue specially used for compounding a PET (polyethylene terephthalate) film and a PE (polyethylene) film of a solar cell backboard, belonging to the technical field of the solar cell. The polyester glue is characterized by comprising the following components: a polyester adhesive, a solvent, a curing agent, an antioxidant and a UV (ultraviolet) resisting agent, a leveling agent and a silane coupling agent. A method for preparing the polyester glue comprises the following steps: adding the polyester adhesive, ethyl acetate, the leveling agent, the silane coupling agent, the antioxidant and the UV resisting agent into a stirring kettle, heating, subjecting to reaction at 40-60 DEG C, stirring uniformly to obtain a transparent solution, adding the curing agent, continuing to stir for 1-2 hours, and decreasing the temperature below 35 DEG C to obtain the polyester glue, wherein the total addition amount of the polyester adhesive, the ethyl acetate, the leveling agent, the silane coupling agent, the antioxidant and the UV resisting agent is 3 / 5 of the capacity of the reactor. The polyester glue has good initial adhesion, high peeling strength and good temperature resistance, also has excellent UV resistance and aging resistance, can be used for compounding the films of the solar cell backboard and can be also used in other occasions with higher requirement for weatherability and barrier properties.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a special polyester glue for compounding PET and PE films on solar cell backplanes and a preparation method thereof. Background technique [0002] The solar cell is prepared by laminating low-iron toughened glass, silicon wafer, EVA glue and back film. Since the solar cell is directly exposed to the air, it is vulnerable to water vapor, acid gas, high and low temperature, and ultraviolet rays, which will cause its photoelectric conversion performance to attenuate. Therefore, the protective effect of the solar cell backsheet film is very important, and the research is also very meaningful. At present, the main suppliers and products of solar battery backplane film in the world include DuPont's TPT, 3M's BBF, Japan's Solar PET and South Korea's SFC. Commonly used back film structures are TPT and TPE types, where P is PET, T is fluoroplastic film, and E is generally PE or EVA. ...

Claims

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Application Information

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IPC IPC(8): C09J167/00C09J7/00H01L31/048H01L31/049
CPCY02E10/50
Inventor 朱晓玲
Owner 安徽金兑新材料科技有限公司
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