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Photovoltaic backing plate refinishing paint as well as refinishing method and applications thereof

A photovoltaic backplane and coating technology, applied in the field of repair coatings, can solve problems such as difficulty in meeting actual needs, poor coating flexibility, and interaction damage, and achieve the effects of reducing the degree of deformation, reducing stress, and enhancing flexibility

Active Publication Date: 2018-03-09
SUZHOU FIRST PV MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it can solve the problem of hydrophobicity of the product very well, for special environments, such as environments with large temperature differences or strong radiation, due to the large deformation of the components in the product after cross-linking and curing, the internal coating remains Higher stress, after long-term thermal expansion and contraction and photoaging, the flexibility of the coating will deteriorate, and the interaction between the coating and the substrate and between the coating and the coating will be gradually destroyed and peeling will occur, making it difficult to To meet the actual needs, it is necessary to seek a repair coating that can be used in environments with large temperature differences or strong radiation

Method used

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  • Photovoltaic backing plate refinishing paint as well as refinishing method and applications thereof
  • Photovoltaic backing plate refinishing paint as well as refinishing method and applications thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] This embodiment provides a photovoltaic backplane repair coating. The main agent is matte white, which belongs to the matting agent type, the gloss is 15-35, the particle size of the main agent scraper is about 14-16 μm, and the solid content is 55%. This type of repair paint consists of the following raw materials in parts by weight:

[0033] 40 parts of fluorine-containing resin;

[0034] Silicone prepolymer (molecular weight controlled at 15000, R / Si controlled at 1.4) 15 parts;

[0035] 8 parts of fatty polyol glycidyl ether type epoxy resin;

[0036] 22 parts of titanium dioxide, 1.8 parts of matting agent, 0.8 parts of BYK carboxylic acid dispersant, 0.4 parts of stannous catalyst, 0.35 parts of non-silicon leveling agent, 24 parts of propylene glycol methyl ether acetate;

[0037] The isocyanate curing agent is selected from German Bayer N 3300 6.5 parts.

[0038] The photovoltaic backplane repair coating is first prepared by mixing and sanding the raw mate...

Embodiment 2

[0041] This embodiment provides a photovoltaic backplane repair coating. The main agent is matte gray, does not contain matting powder, the gloss is 30-45, the particle size of the main agent is about 5-8 μm, and the solid content is 55%. The coating is more delicate and smooth. This type of repair paint consists of the following raw materials in parts by weight:

[0042] 40 parts of fluorine-containing resin;

[0043] 15 parts of silicone prepolymer, the molecular weight is controlled at 15000, and the R / Si is controlled at 1.4;

[0044] 10 parts of fatty polyol glycidyl ether type epoxy resin;

[0045] 22 parts of titanium dioxide, 0.102 parts of carbon black, 0.5 parts of stannous catalyst, 0.35 parts of non-silicon leveling agent, 0.6 parts of BYK carboxylic acid type dispersant, 24 parts of propylene glycol methyl ether acetate, low molecular weight matting agent Unsaturated polycarboxylic acid polymer added with polysiloxane copolymer BYK-161 0.3 parts;

[0046] The ...

Embodiment 3

[0050] This embodiment provides a photovoltaic backplane repair coating. The main agent is white and high-gloss, the gloss is above 80, the particle size of the main agent is about 6-8 μm, and the solid content is 55%. This type of repair paint consists of the following raw materials in parts by weight:

[0051] 40 parts of fluorine-containing resin;

[0052] 10 parts of silicone prepolymer, the molecular weight is controlled at 15000, and the R / Si is controlled at 1.4;

[0053] 19 parts of fatty polyol glycidyl ether type epoxy resin;

[0054] 22 parts of titanium dioxide, 24 parts of propylene glycol methyl ether acetate, 0.5 parts of stannous catalyst, and 0.35 parts of non-silicon leveling agent. Since the air surface of the packaging backplane in the photovoltaic module currently being operated and maintained is high gloss and Occupies a considerable proportion, and the silicone prepolymer has a certain matting effect, so in this example, the modified acrylic copolymer...

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Abstract

The invention discloses a photovoltaic backing plate refinishing paint as well as a refinishing method and applications thereof. The refinishing paint comprises the following raw materials in parts byweight: 40-60 parts of fluorine resin, 10-25 parts of silicone prepolymer, 1-19 parts of epoxy resin, 15-31 parts of inorganic filler, 1-13 parts of auxiliaries, 5-30 parts of diluent, and 5-34 partsof isocyanate curing agent; the refinishing method of a photovoltaic backing plate coating comprises the following steps: (1) cleanly treating the flaws of a photovoltaic backing plate; and (2) filling the prepared photovoltaic backing plate refinishing paint into the flaws, and drying; the applications comprise that the photovoltaic backing plate refinishing paint is applied in refinishing of coatings of coated type, compound type, co-extrusion type and PET type photovoltaic backing plates; and the photovoltaic backing plate refinishing paint not only can meet the strong hydrophobicity situation, but also has the advantages of being low in stress, yellowing-resistant, good in glossiness and strong in adhesivity.

Description

technical field [0001] The invention relates to the field of repair coatings, in particular to a single-layer repair coating for photovoltaic backplanes that is suitable for large temperature differences between day and night and strong ultraviolet radiation, and specifically relates to a photovoltaic backplane repair coating and its repair method and application . Background technique [0002] At present, the global photovoltaic industry is developing rapidly. As a renewable clean energy source, photovoltaic power generation has been widely used all over the world. More and more ground power stations are accelerating construction. The return on investment and safe operation of corresponding power stations have attracted more and more attention. According to a study by the National Development and Reform Commission, the more stable and longer the operation time of photovoltaic systems, the lower the cost per unit of electricity, and the owners of power stations will have a g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/12C09D7/61C09D7/63B05D5/00
CPCB05D5/005C08K2003/2241C08L2201/08C08L2205/03C09D127/12C08L83/04C08L63/00C08K3/22C08K3/04
Inventor 张宇辉杨楚峰王淼张云飞
Owner SUZHOU FIRST PV MATERIAL CO LTD
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