A kind of white ink and coated glass backplane, its preparation method and application, and double-glass solar photovoltaic module

A glass backplane and glass substrate technology, which is applied in the field of solar cells, can solve the problems of insufficient weather resistance of the film layer, and achieve the effects of effective use of light energy, good weather resistance, and excellent insulation

Active Publication Date: 2021-09-28
厦门威亮光学涂层技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can improve the reflectivity of the glass substrate to a certain extent, the adhesion between the film layer and the glass substrate needs to be improved, the weather resistance of the film layer is not good enough, and the reflectivity also has room for improvement.

Method used

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  • A kind of white ink and coated glass backplane, its preparation method and application, and double-glass solar photovoltaic module
  • A kind of white ink and coated glass backplane, its preparation method and application, and double-glass solar photovoltaic module

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preparation example Construction

[0046] The present invention also provides a method for preparing a glass backplane, wherein the method includes:

[0047] S1, coating film preparation: form a layer of uniform film layer on the surface of the glass substrate with the above-mentioned white ink, and obtain the coated glass substrate;

[0048] S2. Pre-curing the coating film: treating the coated glass substrate at 80-200°C for 180s-600s to obtain a glass substrate coated with a highly reflective coating film;

[0049] S3. Tempering coating: the glass substrate coated with the high reflection coating is tempered at 700±20° C. for 120s˜240s.

[0050] In the present invention, the glass substrate includes but not limited to: flat glass and rolled glass. The thickness of the glass substrate may be 0.2-50mm. The film-forming methods of the white ink on the glass substrate include but are not limited to: screen printing, roll coating, spray coating, and flow coating. In addition, in step (1), the coating thickness ...

Embodiment 1

[0055] (1) White ink preparation:

[0056] In terms of mass fraction, the highly reflective inorganic filler, inorganic sintering agent, polymer resin, solvent and auxiliary agent were weighed respectively. Among them, based on the total weight of white ink, the content of high reflection inorganic filler is 60wt%, the content of inorganic sintering agent is 20wt%, the content of polymer resin is 9.5wt%, the content of solvent is 10wt%, the content of auxiliary agent 0.5wt%.

[0057] The highly reflective inorganic filler is made of TiO 2 , BaSO 4 and ZrO 2 According to the weight ratio of 9:2:1, the particle size is 100-300nm. The inorganic sintering agent is composed of Bi 2 o 3 -60wt%, SiO 2 -10wt%, B 2 o 3 -15wt%, MgO-1wt% and ZnO-14wt% are smelted at 900°C for 60 minutes, cooled and dried, ball milled, and screened to obtain multi-component inorganic compounds. The particle size is 5-8 μm, the melting point is 450°C, and the expansion coefficient is 7.2× 10 -6 ...

Embodiment 2

[0062] (1) White ink preparation:

[0063] In terms of mass fraction, the highly reflective inorganic filler, inorganic sintering agent, polymer resin, solvent and auxiliary agent were weighed respectively. Wherein, based on the total weight of the white ink, the content of the highly reflective inorganic filler is 53wt%, the content of the inorganic sintering agent is 25wt%, the content of the polymer resin is 9.5wt%, the content of the solvent is 10.5wt%, and the content of the additive The content is 2wt%.

[0064] The highly reflective inorganic filler is made of TiO 2 Composition, its particle size is 200nm. The inorganic sintering agent is composed of Bi 2 o 3 -20wt%, SiO 2 -20wt%, B 2 o 3 -30wt%, MgO-10wt% and ZnO-20wt% are smelted at 1000°C for 30 minutes, cooled and dried, ball milled, and screened to obtain multi-component inorganic compounds. The particle size is 5-8 μm, the melting point is 550°C, and the expansion coefficient is 7× 10 -6 . The polymer re...

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Abstract

The invention belongs to the field of solar cells, and discloses a white ink and glass back plate, a preparation method thereof, and a solar photovoltaic module. White ink is composed of the following components: 45-70% of high-reflection inorganic fillers, 10-40% of inorganic sintering agents, 2%-18% of polymer resins, 12%-28% of solvents, 0-3% of additives; The filler is selected from TiO 2 , BaSO 4 、BaCO 3 、Al 2 o 3 , CaCO 3 , CaSO 4 , ZrO 2 At least one of , lithopone, mica, lead white and talcum powder; the inorganic sintering agent contains Bi 2 o 3 , SiO 2 and / or B 2 o 3 , MgO and ZnO, and based on the total weight of the inorganic sintering agent, Bi 2 o 3 The content of SiO is 20-60wt%. 2 and B 2 o 3 The total content of MgO is 25-50wt%, the content of MgO is 0.5-10wt%, and the content of ZnO is 5-20wt%. The preparation method of the glass backplane includes S1, coating film preparation; S2, pre-cured coating film; S3, tempered coating film. The glass back plate provided by the invention has good weather resistance, strong adhesive force and strong adhesion, and can be used for preparing double-glass solar photovoltaic modules.

Description

technical field [0001] The invention belongs to the field of solar cells, and in particular relates to a white ink and coated glass back plate, a preparation method and application thereof, and a double-glass solar photovoltaic module. Background technique [0002] Solar photovoltaic modules have been widely used in photovoltaic power generation, and their structure is mainly composed of glass cover plate + EVA film + cell + EVA film + back plate. Among them, the back sheet is located on the outermost layer of the solar photovoltaic module, and plays a role in supporting and protecting the entire solar panel. Since most of the solar photovoltaic modules are used outdoors, they have been subjected to harsh weather such as wind, sand, rain and snow for a long time. Therefore, the backsheet of solar photovoltaic modules must have excellent properties such as weather resistance, insulation, water resistance, oxidation resistance, heat deformation resistance, and mechanical stre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/04C09D5/33C09D7/61H01L31/049
CPCC08K2003/222C08K2003/2241C08K2003/2244C08K2003/2296C08K2003/3045C09D5/004C09D183/04C09D7/61H01L31/049C08K13/02C08K3/22C08K3/30C08K3/36C08K3/38Y02E10/50
Inventor 蔡仁钦吴后胜张崇照刘世基
Owner 厦门威亮光学涂层技术有限公司
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