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Preparation method of composite adhesive used for solar energy backboard

A technology for composite adhesives and solar backsheets, which is applied in the field of preparation of composite adhesives for solar backsheets, can solve the problems of difficult composites and high requirements for adhesives, and achieve improved adhesion and good UV resistance and aging resistance

Active Publication Date: 2011-11-23
NANTONG GAOMENG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, PET and EVA are relatively easy to compound, but PVDF and PET are more difficult to compound, and the adhesive of the compound solar backsheet is required to withstand the double 85 experiment for 1000-3000 hours, that is, at 85 ℃, 85% humidity, under high heat High-humidity aging test, so the requirements for the adhesive itself are relatively high. At present, there is no adhesive that can meet the relevant requirements in my country.

Method used

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  • Preparation method of composite adhesive used for solar energy backboard

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The embodiment of the present invention provides a method for preparing a composite adhesive, which can prepare a composite adhesive that is resistant to high heat, high humidity and ultraviolet light for composite solar battery back sheets. The method includes the following steps:

[0018] Prepare the main ingredient:

[0019] Esterification: put ethylene glycol and phthalic acid into the esterification reaction kettle and mix them, then fill the nitrogen gas protection, raise the temperature of the esterification reaction kettle to 220°C, and start the esterification reaction when the water comes out of the esterification reaction kettle, the esterification reaction If the water output of the kettle reaches the theoretical water output, the esterification reaction is completed;

[0020] Put terephthalic acid and 1,6-hexanediol, cyclohexanedimethanol into the esterification reactor after the above-mentioned esterification reaction is completed, the still temperature of...

Embodiment 2

[0033] This example provides a method for preparing a solar backsheet composite adhesive, which can prepare a three-layer composite structure of a solar backsheet that can meet the requirements of fluorine-containing materials such as PVDF / PET / EVA. The intensity attenuation is small, and the ultraviolet light resistance is good. The method includes the following steps:

[0034] Prepare the main ingredient:

[0035] Esterification: Put 8kg of ethylene glycol into the esterification reaction kettle, heat it up, then add 30kg of phthalic acid, and heat up after nitrogen replacement. Start; the end point of the esterification reaction is judged on the basis that the water output of the esterification reactor reaches the theoretical water output;

[0036] For the second feeding, 18kg of terephthalic acid, 15kg of 1,6-hexanediol, and 12kg of cyclohexanedimethanol are put into the esterification reaction kettle, and the water is discharged for the second time to carry out the esteri...

Embodiment 3

[0040]This example provides a method for preparing a solar backsheet composite adhesive, which can prepare a three-layer composite structure of a solar backsheet that can meet the requirements of fluorine-containing materials such as PVDF / PET / EVA. The intensity attenuation is small, and the ultraviolet light resistance is good. The method includes the following steps:

[0041] Prepare the main ingredient:

[0042] Esterification: Put 9kg of ethylene glycol into the esterification reaction kettle, heat up, then add 33kg of phthalic acid, heat up after nitrogen replacement, the temperature of the esterification reaction kettle reaches 220°C, and water begins to flow out, and the esterification reaction start; the end point of the esterification reaction is judged based on the theoretical water output;

[0043] For the second feeding, 15kg of terephthalic acid, 18kg of 1,6-hexanediol, and 10kg of cyclohexanedimethanol are put into the esterification reaction kettle, and the wate...

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Abstract

The invention discloses a preparation method of a composite adhesive used for solar energy backboards. The invention belongs to the field of adhesive preparation. According to the invention, terephthalic acid, o-phthalic acid, ethylene glycol, 1,6-hexanediol, and cyclohexane dimethanol are adopted as raw materials. The raw materials are esterified and polycondensed. Ethyl acetate is added to the materials, and a proper amount of a nano-material is added to the mixture, such that a main agent is obtained. The main agent and a curing agent are mixed, such that the solar energy backboard composite adhesive is obtained. The adhesive has good bonding strength, ultraviolet aging resistance and natural aging resistance when used on solar energy backboards containing PVDF. When the adhesive is composed, laminated and tested by a double-eight-five aging test for 2000 hours, the peeling strength of the adhesive satisfies requirements of relative aspects of the industry.

Description

technical field [0001] The invention relates to the field of adhesive preparation, in particular to a method for preparing a composite adhesive for solar back panels. Background technique [0002] Due to the lack of energy resources and the enhancement of people's awareness of environmental protection, solar cells have been used in large quantities in recent years. The solar backplane is located on the back of the solar panel, which protects and supports the cells, and has reliable insulation, water resistance, Anti-aging. The solar backsheet generally has a three-layer structure, PVDF / PET / EVA, PVDF is the outer protective layer, which has good environmental erosion resistance, the middle PET has good insulation properties, and EVA has good bonding properties. The solar backsheet is bonded with an adhesive between the above-mentioned three-layer structure. Among them, PET and EVA are relatively easy to compound, but PVDF and PET are more difficult to compound, and the adhe...

Claims

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Application Information

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IPC IPC(8): C09J175/06C08G18/42C08G63/183H01L31/048H01L31/049
CPCY02E10/50
Inventor 张淑萍沈峰
Owner NANTONG GAOMENG NEW MATERIAL
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