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A kind of ceramic coating for glass-based solar backplane and preparation method thereof

A technology for solar backplanes and ceramic coatings, applied in the direction of reflection/signal coatings, coatings, semiconductor devices, etc., can solve problems such as loss of protection of solar cell components, environmental pollution of operators, separation between layers, etc., to prevent sagging, Prevent glass warping and reduce the effect of proportion

Active Publication Date: 2019-01-11
SHANGHAI EXCILON NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the general solar backsheet generally has a three-layer structure, that is, TPT structure or TPE structure. The outer protective layer is a fluoropolymer layer, which has good environmental erosion resistance. The middle layer is a biaxially stretched polyester film layer, which has Good insulation and mechanical properties, the inner layer is a fluorine-containing polymer layer or a polyethylene and vinyl acetate copolymer and the packaging material EVA, which has good adhesion, and the solvent-based two-component polyurethane is used between each layer The biggest disadvantage of this kind of dry composite structure is that it needs to use a lot of organic solvents in the production process. These organic solvents will more or less cause certain pollution to the operators and the environment. In addition, this composite structure During the long-term use of the structure, the polyurethane adhesive layer will degrade, resulting in separation and peeling between the layers, which will cause the solar cell module to lose its protection and be gradually scrapped

Method used

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  • A kind of ceramic coating for glass-based solar backplane and preparation method thereof
  • A kind of ceramic coating for glass-based solar backplane and preparation method thereof
  • A kind of ceramic coating for glass-based solar backplane and preparation method thereof

Examples

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Effect test

Embodiment 1-3

[0039] Embodiments 1-3 provide a ceramic coating for solar back panels, the components and corresponding contents included are shown in Table 1 below:

[0040] Table 1

[0041]

[0042] The preparation method of the above-mentioned ceramic coating for solar backboard, comprises the following steps:

[0043] Mix the solvent, titanium dioxide, and dispersant, and ball mill to obtain a slurry; mix the slurry with the siloxane prepolymer, add the thixotropic agent and leveling agent and mix to obtain a ceramic coating.

[0044] Wherein, the time of the ball milling is 0.5-2 hours; the ball milling adopts zirconium beads; the equipment of the ball milling is a grinding machine; the particle size of the zirconium beads is 1.5-3mm.

[0045] The slurry or the ceramic coating obtained by the method of the present invention are all white.

Embodiment 4-6

[0047] Examples 4-6 used the ceramic coating prepared in Example 1 to prepare a solar backsheet, and the preparation parameters and performance of the solar backsheet are shown in Table 2 below:

[0048] Table 2

[0049]

[0050]

[0051] The preparation method of the solar backboard of the above-mentioned ceramic coating is specifically as follows: the ceramic coating is coated on the solar backplane substrate by rolling coating, solidified and cooled;

[0052] Wherein, the solar backplane substrate specifically refers to inorganic glass; the curing conditions are: 600-800°C, 2-5 minutes; the equipment used for the curing is a high-temperature furnace; the cooling specifically refers to cold air cooling.

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Abstract

The invention discloses a ceramic coating for glass-based solar backboards, and a preparation method thereof. The ceramic coating comprises, by weight, 40-60% of a siloxane prepolymer, 25-35% of titanium dioxide, 0-1% of a dispersant, 2-5% of a thixotropic agent, 0-1% of a leveling agent, and the balance of a solvent. Compared with the prior art, the preparation method has the following characteristics: 1, types of the base materials and the coating layers of present solar backboards are replaced, and the base materials of present solar backboards are PET mainly, and are replaced with common glass; 2, the types of the coating layers of the solar backboards are changed, and the coating layers of the present solar backboards are fluorine-containing organic coating layers and are replaced with inorganic aqueous ceramic coating layers; and 3, edge warping, deformation and other uneven surface phenomena of glass surfaces, caused by different contraction rates of the glass base materials and the ceramic coating layers in the high temperature solidifying process, are solved.

Description

technical field [0001] The invention provides a ceramic coating for a glass-based solar back panel and a preparation method thereof. Background technique [0002] At present, with the rapid development of the global economy and the background of climate warming, the requirements for energy conservation and emission reduction and the development of new energy to replace fossil fuels are becoming more and more urgent. [0003] Solar energy is a new type of green and non-polluting energy, and it is inexhaustible. At present, the application of solar energy is mainly to use solar power generation components to convert solar energy into electrical energy for utilization. Solar power generation components are mainly composed of front plates, packaging materials, crystalline silicon cells, and back plates. The solar backsheet is located on the back of the solar cell panel, which protects and supports the cells, so it must have reliable electrical insulation, good mechanical proper...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/04C09D5/33C09D7/61C09D7/63H01L31/049
CPCY02E10/50
Inventor 李力锋
Owner SHANGHAI EXCILON NEW MATERIALS
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