Weather-resistant solar glass surface anti-reflective film and preparation method thereof

A technology of solar glass and weather resistance, applied in chemical instruments and methods, glass/slag layered products, layered products, etc., to achieve the effect of improving utilization, good bonding force, good mechanical strength and weather resistance

Active Publication Date: 2014-05-07
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the defects of weather resistance and mechanical strength of the large-area anti-reflection film prepared by the existing sol-gel technology, and provides a weather-resistant solar glass Surface anti-reflection film and preparation method thereof, meanwhile, this anti-reflection film also has the advantages of stable performance of coating sol, easy large-scale production, and low cost

Method used

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  • Weather-resistant solar glass surface anti-reflective film and preparation method thereof
  • Weather-resistant solar glass surface anti-reflective film and preparation method thereof
  • Weather-resistant solar glass surface anti-reflective film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Butyl titanate (Ti(OC 4 h 9 ) 4 , TBOT), absolute ethanol (EtOH), deionized water (H 2 O), glacial acetic acid (HAc), and acetylacetone (AcAc) in a molar ratio of 1:8:3:1.5:0.2 were fully stirred for 2 hours in an environment with a temperature of about 20 °C and a relative humidity of less than 60%, and then aged for 5 - Obtain transparent titanium oxide sol in 7 days. During the preparation process, first dissolve TBOT in half of EtOH, add HAc dropwise while stirring, and the obtained solution is called A solution; then H 2 O is mixed with the other half of EtOH, and the resulting solution is called B solution; finally, B solution is slowly added dropwise to A solution and stirred evenly.

[0027] Tetraethyl orthosilicate (TEOS), deionized water (H 2 O), hydrochloric acid (HCl) and absolute ethanol (EtOH) according to the molar ratio of 1: 2: 0.2: 40, mixed and stirred evenly, placed in a stable environment (20 ° C, relative humidity 20%) for 7 days to obtain Tr...

Embodiment 2

[0031] Butyl zirconate (Zr(OC 4 h 9 ) 4, TBOZ), absolute ethanol (EtOH), deionized water (H 2 O), glacial acetic acid (HAc), and acetylacetone (AcAc) according to the molar ratio of 1:10:3:2:0.1 were fully stirred at room temperature for 2 hours, and then aged for 5-7 days to obtain a transparent zirconia sol. Pay attention to the order of adding raw materials during the preparation process, AcAc is added to ethanol before TBOZ, and HAc is added before water. Otherwise, the reaction speed is too fast, and the sol will form a suspension or gel.

[0032] The preparation process of silica sol is as described in Example 1.

[0033] Then, in a clean environment with a relative humidity RH lower than 50%, use the pulling method to coat the cleaned ultra-clear glass substrate. During the coating process, a zirconia film was first plated at a speed of V = 12 inch / min, and after the film was dried, it was placed in a muffle furnace for heat treatment at 250°C for 1 hour. After th...

Embodiment 3

[0035] Hafnium tert-butoxide (Hf(OC 4 h 9 ) 4 ), ethanol (EtOH), deionized water (H 2 O), glacial acetic acid (HAc), and acetylacetone (AcAc) according to the molar ratio of 1:8:2.5:2:0.1 were fully stirred at room temperature for 2 hours, and then aged for 5-7 days to obtain a transparent hafnium oxide sol. Pay attention to the order of adding raw materials during the preparation process, AcAc is added to ethanol before hafnium tert-butoxide, and HAc is added before water. Otherwise, the reaction speed is too fast, and the sol will form a suspension or gel.

[0036] The preparation process of silica sol is as described in Example 1.

[0037] Then, in a clean environment with a relative humidity RH lower than 50%, use the pulling method to coat the cleaned ultra-clear glass substrate. During the coating process, the hafnium oxide film was first plated at a speed of V = 11 inch / min. After the film was dried, it was placed in a muffle furnace for heat treatment at 300°C for...

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Abstract

The invention relates to a weather-resistant solar glass surface anti-reflective film and a preparation method thereof. The weather-resistant anti-reflective film comprises a W type (gama / 2-gama / 4) optical film system which is formed by a high-refractive-index film layer and a low-refractive-index film layer with which the surface of solar glass is coated with and which have a compact structure. The compact high-refractive-index film layer is one of a ZrO2, TiO2 or HfO2 thin film with the refractive index of 1.7-2.1, and the thickness of the film layer ranges from 130nm to 145nm. The compact low-refractive-index film layer is one of an SiO2 or Mgf2 thin film with the refractive index of 1.35-1.43, and the thickness of the film layer ranges from 85nm to 100nm. The average transmittance of ultrawhite glass coated with the film in the wave band of 400nm-800nm is greater than 6%; the hardness of the thin film is greater than 5H, the transmittance of the thin film, which is subjected to wear-resistant tests and acid solution soaking, has no any change; after the film is used for one year, the average transmittance of the thin film is reduced by only 0.05%. In addition, a coating solution is a single system of organic alcohol salt and can maintain high stability within a half year, so that the repeatability and feasibility of scale production can be guaranteed.

Description

technical field [0001] The invention belongs to the technical field of optical film preparation, and in particular relates to a weather-resistant solar glass surface anti-reflection film with high transmittance and high strength and a preparation method thereof. Background technique [0002] The global energy crisis has promoted the development and utilization of new energy and renewable energy technologies led by solar energy. Common solar energy utilization methods include: light-heat utilization, light-heat-electric conversion or direct photoelectric conversion (photovoltaic effect). Glass components (solar glass) are required to protect the surface of these solar energy utilization devices, and the reflection loss (~8%) of the component glass surface to incident sunlight reduces its utilization efficiency to a certain extent. Therefore, reducing surface sunlight reflection is one of the effective ways to improve solar energy conversion efficiency. Adding a layer of ant...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B17/06B32B33/00C03C17/34
Inventor 王晓栋沈军田冰涛吴广明周斌
Owner TONGJI UNIV
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