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High-reflection glass slurry for photovoltaic module glass backboard and preparation method thereof

A glass paste, glass backplane technology, applied in reflective/signal coatings, photovoltaic power generation, electrical components, etc., can solve problems such as low reflectivity

Active Publication Date: 2021-04-30
黄山市晶特美新材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At this stage, there are many highly reflective white glass pastes for the glass backsheet of photovoltaic modules, such as "Highly reflective coatings suitable for double-glass solar module backsheets and its preparation method" introduced in Chinese patent 201810823942.8. The coating consists of 15-60 parts of rutile titanium dioxide, 20-35 parts of barium sulfate, 23-40 parts of inorganic binder, 0-5 parts of ultrafine fused silica powder, 0-3 parts of zirconia micropowder, 0-1 part of rare earth lanthanum oxide micropowder parts, varnish 18-25 parts, this coating has good adhesion, but its reflectivity is still low (80%)

Method used

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  • High-reflection glass slurry for photovoltaic module glass backboard and preparation method thereof
  • High-reflection glass slurry for photovoltaic module glass backboard and preparation method thereof

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Effect test

Embodiment 1～4 and comparative example 1～3

[0030] Embodiment 1~4 and comparative example 1~3 preparation process

[0031] (1) Preparation of glass powder: Mix the raw materials of the low-melting point glass powder in the formula quantity evenly to obtain the base material; heat the base material and fire it for 30 minutes, and after the melt is homogenized and clarified, a uniform glass liquid is formed; the glass Pour the solution into deionized water and quench to obtain cullets; add water to the cullets and wet grind them for 3 hours, dry them, and pass them through a 250-mesh sieve to obtain low-melting-point glass powders.

[0032] (2) Preparation of mixed powder: Take the low-melting-point glass powder and titanium dioxide in the step (1) according to the proportioning ratio, and after mixing evenly, heat the uniformly mixed titanium dioxide and low-melting-point glass powder and keep them warm for a period of time, and cool naturally After reaching room temperature, pass through a 250-mesh sieve to obtain a mix...

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Abstract

The invention belongs to the technical field of glass slurry, and particularly relates to high-reflection glass slurry for a photovoltaic module glass backboard and a preparation method of the high-reflection glass slurry, the high-reflection glass slurry for the photovoltaic module glass backboard is high in reflectivity, and the slurry comprises titanium dioxide, low-melting-point glass powder, erbium oxide and water-based varnish; wherein the low-melting-point glass powder is prepared from ZnS and TiO2. The high-reflection glass slurry for the glass backboard of the photovoltaic module, provided by the invention, has high adhesive force, chemical stability, use safety and relatively high reflectivity, and is suitable for the glass back plate of the photovoltaic module.

Description

technical field [0001] The invention belongs to the technical field of glass paste, and in particular relates to a highly reflective glass paste for a photovoltaic module glass backplane and a preparation method thereof. Background technique [0002] In recent years, in order to improve the power generation efficiency of solar cells, the use of double-sided / double-glass modules has gradually increased. The double-sided battery module is a module that can be used for photoelectricity on both sides of the battery. The front side of the module is used as the main power generation surface, and the back side battery mainly uses ambient light to supplement power generation, thereby increasing the power generation efficiency of the entire battery. [0003] The highly reflective white glass paste is mainly coated on the back glass of the photovoltaic module and tempered as a whole to fill the joints of the silicon wafers, and reflect the sunlight leaked from the joints of the silico...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D5/33C09D7/61H01L31/049
CPCC09D1/00C09D5/004C09D7/61H01L31/049Y02E10/52
Inventor 陈楠
Owner 黄山市晶特美新材料有限公司
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