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Single-component hot melt adhesive for photovoltaic solar back panel and preparation method of single-component hot melt adhesive

A technology of photovoltaic solar energy and hot-melt adhesives, applied in the direction of adhesives, adhesive types, polyurea/polyurethane adhesives, etc., can solve problems affecting anti-corrosion ability and insulation performance, film deformation, etc., and reduce investment in environmental protection facilities , Inhibit stress and strain shedding, improve the effect of pollution

Pending Publication Date: 2022-04-12
WUXI LAIEN TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a single-component hot-melt adhesive for photovoltaic solar backplane and its preparation method. Cold shrinkage causes deformation of the film, which seriously affects its corrosion resistance and insulation performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: A kind of one-component hot-melt adhesive for photovoltaic solar backplane, described hot-melt adhesive is made up of the raw material of following parts by weight: 45 parts of isocyanate, 60 parts of polyester polyol, 5 parts of polyether Polyol, 2 parts of bacterial cellulose, 0.5 parts of nano talc, 2 parts of chain extender, 1 part of curing agent, 1 part of polycarbodiimide, 1 part of adhesion promoter, 0.2 parts of Catalyst and 0.1 part of antioxidant.

[0025] The isocyanate is one or more mixtures of polyphenyl polymethylene polyisocyanate, isophorone diisocyanate, diphenylmethane diisocyanate, dicyclohexylmethane diisocyanate and hexamethylene diisocyanate.

[0026] Described polyester polyol comprises epoxy acrylic acid modified saturated polyester, one or more mixtures in aliphatic polyol, aromatic polyol, polycaprolactone polyol and polycarbonate diol; The polyol has an average molecular weight of 1,000.

[0027] Wherein, the polyester polyol...

Embodiment 2

[0045] Embodiment 2: A kind of one-component hot-melt adhesive for photovoltaic solar backplane, described hot-melt adhesive is made up of the raw material of following parts by weight: 50 parts of isocyanate, 70 parts of polyester polyol, 10 parts of polyether Polyol, 2.5 parts of bacterial cellulose, 0.8 parts of nano talc, 4 parts of chain extender, 1 part of curing agent, 1 part of polycarbodiimide, 1 part of adhesion promoter, 0.3 parts of Catalyst and 0.2 part of antioxidant.

[0046] The isocyanate is one or more mixtures of polyphenyl polymethylene polyisocyanate, isophorone diisocyanate, diphenylmethane diisocyanate, dicyclohexylmethane diisocyanate and hexamethylene diisocyanate.

[0047] Described polyester polyol comprises epoxy acrylic acid modified saturated polyester, one or more mixtures in aliphatic polyol, aromatic polyol, polycaprolactone polyol and polycarbonate diol; The polyol has an average molecular weight of 1,000.

[0048] Wherein, the polyester pol...

Embodiment 3

[0066] Embodiment 3: A kind of one-component hot-melt adhesive for photovoltaic solar backplane, described hot-melt adhesive is made up of the raw material of following parts by weight: 55 parts of isocyanate, 80 parts of polyester polyol, 15 parts of polyether Polyol, 3 parts of bacterial cellulose, 1 part of nano talc, 5 parts of chain extender, 2 parts of curing agent, 3 parts of polycarbodiimide, 2 parts of adhesion promoter, 0.5 parts of Catalyst and 0.3 part of antioxidant.

[0067] The isocyanate is one or more mixtures of polyphenyl polymethylene polyisocyanate, isophorone diisocyanate, diphenylmethane diisocyanate, dicyclohexylmethane diisocyanate and hexamethylene diisocyanate.

[0068] Described polyester polyol comprises epoxy acrylic acid modified saturated polyester, one or more mixtures in aliphatic polyol, aromatic polyol, polycaprolactone polyol and polycarbonate diol; The polyol has an average molecular weight of 1,000.

[0069] Wherein, the polyester polyo...

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PUM

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Abstract

The invention discloses a single-component hot melt adhesive for a photovoltaic solar backboard and a preparation method of the single-component hot melt adhesive. The hot melt adhesive is prepared from the following raw materials in parts by weight: 45 to 55 parts of isocyanate, 60 to 80 parts of polyester polyol, 5 to 15 parts of polyether polyol, 2 to 3 parts of bacterial cellulose, 0.5 to 1 part of nano talcum powder, 0.1 to 5 parts of a chain extender, 0.1 to 2 parts of a curing agent, 0.1 to 3 parts of polycarbodiimide, 0.1 to 2 parts of an adhesion promoter, 0.1 to 0.5 part of a catalyst and 0.1 to 0.3 part of an antioxidant. The hot melt adhesive does not need to add an organic solvent and double parts of A-type substances, can greatly reduce the VOC emission amount, effectively improves the environmental pollution caused by the hot melt adhesive, has good and extremely strong bonding performance, can meet the composite requirements of a base material and a membrane material, inhibits stress-strain falling, and meanwhile, has the advantages of simple preparation process, low cost and the like after the hot melt adhesive is cured and molded. A rapid heat conduction and heat dissipation network is formed in the adhesive layer, the temperature difference change is relieved, the thermal expansion coefficient is low, the size change is small during thermal expansion and cold contraction, and the adhesive is prevented from damaging the film bonding effect.

Description

technical field [0001] The invention relates to a single-component hot-melt adhesive for a photovoltaic solar backplane and a preparation method thereof, belonging to the technical field of hot-melt adhesives. Background technique [0002] Solar cells, also known as "solar chips" or "photovoltaic cells", are photoelectric semiconductor sheets that use sunlight to generate electricity directly. A single solar cell cannot be directly used as a power source. As a power supply, several single solar cells must be connected in series and parallel and tightly packed into components. [0003] Photovoltaic solar panels include the following components: (1) tempered glass: its function is to protect the main body of power generation (such as battery sheets); (2) EVA: used to bond and fix toughened glass and power generation Inferiority directly affects the life of the module. EVA exposed to the air is prone to aging and yellowing, which affects the light transmittance of the module ...

Claims

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Application Information

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IPC IPC(8): C09J175/04C09J11/04C09J11/08
Inventor 张来
Owner WUXI LAIEN TECH