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Solar back panel transparent polyurethane paint and preparation method thereof

A technology for polyurethane coatings and solar back sheets, applied in the directions of polyurea/polyurethane coatings, anti-corrosion coatings, coatings, etc., can solve the problems of high price and difficult to obtain, and achieve low price, low adhesion and good corrosion resistance. Effect

Active Publication Date: 2015-02-18
MING CROWN ADVANCED MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing fluorine membranes have long relied on imports, which are expensive and difficult to obtain

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] A solar backboard transparent polyurethane coating, the transparent polyurethane coating is a two-component system:

[0051] Wherein, component A is the raw material of following parts by weight:

[0052] Acrylic resin 5 parts

[0053] Fluorine resin 30 parts

[0054] 10 parts of organic solvent

[0055] Catalyst 1 part

[0056] 1 part UV absorber

[0057] 1 part of defoamer;

[0058] Component B is an aliphatic polyisocyanate curing agent, and the aliphatic polyisocyanate curing agent is hexamethylene diisocyanate biuret;

[0059] According to the ratio of NCO / OH=0.9-1.2, a transparent polyurethane coating is prepared.

[0060] The acrylic resin is an acrylic resin containing hydroxyl functional groups.

[0061] Described acrylic resin is the acrylic resin of the model Macrynal SM510N that American Cytec Company produces, and its curing amount is 60%.

[0062] The fluororesin is FEVE resin.

[0063] Described organic solvent is toluene.

[0064] The catalyst ...

Embodiment 2

[0073] A solar backboard transparent polyurethane coating, the transparent polyurethane coating is a two-component system:

[0074] Wherein, component A is the raw material of following parts by weight:

[0075] 10 parts acrylic resin

[0076] Fluorine resin 40 parts

[0077] 12 parts of organic solvent

[0078] Catalyst 1.5 parts

[0079] UV absorber 1.5 parts

[0080] 1.2 parts of defoamer;

[0081] Component B is an aliphatic polyisocyanate curing agent, and the aliphatic polyisocyanate curing agent is a trimer of hexamethylene diisocyanate;

[0082] According to the ratio of NCO / OH=0.9-1.2, a transparent polyurethane coating is prepared.

[0083] The acrylic resin is an acrylic resin containing hydroxyl functional groups.

[0084] Described acrylic resin is the acrylic resin of model CYTEC Macrynal SM515 produced by American Cytec Company, and its solid content is 70%.

[0085] The fluororesin is PVDF resin.

[0086] The organic solvent is ethyl acetate.

[0087]...

Embodiment 3

[0096] A solar backboard transparent polyurethane coating, the transparent polyurethane coating is a two-component system:

[0097] Wherein, component A is the raw material of following parts by weight:

[0098] 25 parts acrylic resin

[0099] Fluorine resin 50 parts

[0100] 15 parts of organic solvent

[0101] Catalyst 2 parts

[0102] 2 parts UV absorber

[0103] 1.5 parts of defoamer;

[0104] Component B is an aliphatic polyisocyanate curing agent, and the aliphatic polyisocyanate curing agent is an isophorone diisocyanate trimer;

[0105] According to the ratio of NCO / OH=0.9-1.2, a transparent polyurethane coating is prepared.

[0106] The acrylic resin is an acrylic resin containing hydroxyl functional groups.

[0107] The acrylic resin is the acrylic resin of Macrynal SM2810 produced by Cytec Corporation of the United States, and its curing amount is 70%.

[0108] The fluororesin is a mixture of FEVE resin and PVDF resin in a weight ratio of 1:1.5.

[0109] De...

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PUM

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Abstract

The invention relates to the technical field of solar cell back panels, particularly a solar back panel transparent polyurethane paint and a preparation method thereof. The transparent polyurethane paint is a double-component system. The component A is prepared from the following raw materials in parts by weight: 5-50 parts of acrylic resin, 30-70 parts of fluororesin, 10-20 parts of organic solvent, 1-3 parts of catalyst, 1-3 parts of ultraviolet absorbent and 1-2 parts of defoaming agent. The component B is an aliphatic polyisocyanate curing agent, and the aliphatic polyisocyanate curing agent comprises at least one of hexamethylene diisocyanate biuret, hexamethylene diisocyanate tripolymer and isophorone diisocyanate tripolymer. The components A and B are mixed according to the NCO / OH ratio of 0.9-1.2 to obtain the transparent polyurethane paint. The transparent polyurethane paint has the advantages of lower cost, accessible raw materials, excellent weather resistance, excellent corrosion resistance, excellent adhesive force, excellent ultraviolet resistance and excellent hydrolysis resistance.

Description

technical field [0001] The invention relates to the technical field of solar battery backplanes, in particular to a transparent polyurethane coating for solar backplanes and a preparation method thereof. Background technique [0002] The solar cell backsheet is located on the back of the solar cell panel, which protects and supports the cells, and needs to have reliable insulation, water resistance, and aging resistance. With the rise of the photovoltaic industry in recent years, various companies have proposed various structures for solar photovoltaic cell backplanes. At present, the most commonly used in China is the TPT structure backsheet produced by DuPont, which is composed of upper and lower layers of fluorine film (PVF or PVDF) and a polyester layer (PET) in the middle. Existing fluorine membranes have been dependent on imports for a long time, and are expensive and difficult to obtain. Contents of the invention [0003] In order to overcome the shortcomings and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D127/12C09D127/16C09D5/08C09D7/12C08G18/62
CPCC08L2201/10C08L2205/025C08L2205/03C09D5/08C09D7/20C09D7/63C09D7/65C09D175/04C08L27/12C08L27/16
Inventor 方艳张鹏徐海燕吴松纪孝熹张曙光
Owner MING CROWN ADVANCED MATERIAL CO LTD
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