A weather-resistant adhesive and its application on solar cell backplanes

A technology of solar cells and adhesives, which is applied in the direction of adhesives, adhesive types, polyurea/polyurethane adhesives, etc., can solve the problems of poor initial adhesion of the backsheet, and achieve guaranteed service life, heat resistance and yellowing resistance Excellent, time-saving effect

Active Publication Date: 2019-06-14
CHINA LUCKY FILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the initial adhesive force of the back sheet made by using it is poor, which cannot meet the current higher requirements for the initial adhesive force of the back sheet

Method used

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  • A weather-resistant adhesive and its application on solar cell backplanes
  • A weather-resistant adhesive and its application on solar cell backplanes
  • A weather-resistant adhesive and its application on solar cell backplanes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Component A includes polyether polyol A1, which is polyoxypropylene glycol, its molecular weight is 1000, and its hydroxyl value is 50 mgKOH / g. The amount accounts for 5% of the total amount of the polyol composition, 4.13 g in total;

[0068] Polyester polyol A2, obtained by polycondensation of phthalic anhydride and 2-butyl-2-ethyl-1,3-propanediol, has a molecular weight of 8000, a hydroxyl value of 20 mgKOH / g, and the dosage accounts for 40% of the total amount, a total of 33.00g;

[0069] Acrylate polyol A3, an acrylate polyol obtained by copolymerization of methyl methacrylate, butyl acrylate, butyl methacrylate and 2-hydroxyethyl methacrylate, has a molecular weight of 100,000 and a hydroxyl value of 15 mgKOH / g, the amount accounts for 55% of the total amount of the polyol composition, a total of 45.39g.

[0070] Component B is aliphatic isocyanate B1, 1,6-diisocyanatohexane, 7.10g.

[0071] Auxiliary agent is bisphenol A glycidyl ether epoxy resin, 4.48g, cata...

Embodiment 2

[0076] A component comprises polyether polyol A1, is polytetrahydrofuran, and its molecular weight is 8000, and hydroxyl value is 20mgKOH / g, and consumption accounts for 40% of polyol composition total amount, altogether 30.43g; Polyester polyol A2, by ophthalmic Prepared by polycondensation of phthalic anhydride and 2,4-dibutyl-1,5-pentanediol, its molecular weight is 1000, and its hydroxyl value is 60mgKOH / g. g; Acrylate polyol A3, an acrylate polyol obtained using butyl acrylate, cyclohexyl methacrylate, 2-hydroxyethyl methacrylate and butyl methacrylate, has a molecular weight of 5000 and a hydroxyl value of 50mgKOH / g, the dosage accounts for 55% of the total amount of the polyol composition, 41.84g in total.

[0077] Component B is aliphatic isocyanate B1, 1,6-diisocyanatohexane, 13.44g.

[0078] Other additives include epoxy resin bisphenol A glycidyl ether, 4.5g, catalyst is dibutyltin dilaurate, 0.04g, coupling agent is vinyltrialkoxysilane, 0.91g, and ultraviolet abs...

Embodiment 3

[0083]Component A includes polyether polyol A1, which is polyoxyethylene glycol, its molecular weight is 3000, and its hydroxyl value is 30 mgKOH / g. Alcohol A2, obtained by polycondensation of 2-methylsuccinic acid and 3,3-dimethyl-1,5-pentanediol, has a molecular weight of 2000 and a hydroxyl value of 45 mgKOH / g, and its dosage accounts for the total polyol composition 25% of the amount, a total of 19.40g; Acrylate polyol A3 is (meth)acrylic acid-2-hydroxypropyl ester homopolymer, its molecular weight is 50000, and the hydroxyl value is 30mgKOH / g, and the consumption accounts for the total polyol composition 50% of the amount, a total of 38.80g.

[0084] Component B is aliphatic isocyanate B1, 1,6-diisocyanatohexane, 12.01g.

[0085] Other additives include epoxy resin bisphenol A glycidyl ether, 4.47g, catalyst is dibutyltin dilaurate, 0.04g, coupling agent is vinyltrialkoxysilane, 0.89g, and ultraviolet absorber is TINUVIN571 , 0.56g, light stabilizer is TINUVIN765, 0.56g...

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Abstract

The invention discloses a weather resistance adhesive. The weather is a dual-component polyurethane adhesive comprising a component A and a component B, wherein the component A is composed of polyester polyol, acrylic polyol, polyether polyol and auxiliaries, and the component B is mainly composed of isocyanate. The obtained adhesive has the better initial stripping resistance, can keep the good adhesion stress on the poor environment condition, xanchochromia is not likely to occur, and the weather resistance adhesive can be applied to occasions with the requirement for high weather resistance.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to a weather-resistant adhesive. Background technique [0002] Materials for outdoor industrial use, such as building materials and solar cell backsheet materials, are exposed to the outdoors for a long time, requiring excellent weather resistance for adhesives, especially for solar cell backsheet materials, which require more than conventional outdoor industrial use materials. Higher level of weather resistance. [0003] The practical use of solar cells as a green energy source has received increasing attention and progress has been made. The solar cell back sheet is located on the back of the solar cell panel, which protects and supports the cells. Therefore, the back sheet is required to have good bonding strength, high electrical insulation performance, and can block damp heat, oxidation, water vapor, and ultraviolet rays. Radiation, and excellent resistance to cold and heat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/04C09J11/06C08G18/62C08G18/48C08G18/42C08G18/58
CPCC08G18/4211C08G18/4238C08G18/4845C08G18/4854C08G18/58C08G18/6225C08K5/00C09J11/06C09J175/04
Inventor 姜伟邢爱王平田丛李永杰
Owner CHINA LUCKY FILM CORP
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