Black glass capable of highly absorbing earth surface sunlight and preparation method thereof

A black glass, high absorption technology, applied in glass manufacturing equipment, glass furnace equipment, manufacturing tools, etc., can solve the problem of impermeability cannot be guaranteed, and achieve the effect of high absorption and good absorption effect

Inactive Publication Date: 2007-10-17
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there are many ways to make black glass, and the specific manufacturing process and materials used are very different. However, the black glass produced at present is only black in color, that is to say, it is only opaque to the visible band. Yes, while the wavelength of sunlight reaching the surface of the earth extends from 200nm to 2500nm, and the wavelength of the visible band is only in the range of 400nm-780nm. Surface sunlight also has a certain energy distribution in the ultraviolet and infrared bands outside the visible light , for these two bands, traditional black glass cannot guarantee its impermeability
For example, the patent application No. 03153789.8 "A Production Method for Crystal Black Glass" mentions the use of Fe 2 o 3 , CoO, and NiO can be used as colorants to produce black glass in conventional glass systems, but the black he said is only for visible light

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Take 18.03 grams of silicon dioxide, 9.27 grams of boric acid, 13.26 grams of sodium carbonate, colorants: 0.042 grams of dicobalt trioxide, 0.190 grams of dichromium trioxide, 0.796 grams of copper oxide, mix the raw materials evenly, put them in a crucible, and then put Melt the crucible in a high-temperature furnace at 1400°C for 2 hours, then take out the crucible, pour the glass liquid into the mold, and quickly place the glass sample in an annealing furnace at 550°C for 2-3 hours after forming, and anneal the annealed glass The sample is optically processed to prepare a glass plate with a thickness of 5 mm, and its transmission spectrum curve test is carried out on a spectrometer. Comparing the energy distribution of the surface sunlight with an atmospheric mass of 1.5, it can be estimated that the transmitted sunlight energy accounts for the surface solar energy. Less than 2% of light radiant energy.

Embodiment 2

[0021] Take 18.03 grams of silicon dioxide, 9.27 grams of boric acid, 13.26 grams of sodium carbonate, colorants: 0.415 grams of dicobalt trioxide, 0.190 grams of dichromium trioxide, and 0.796 grams of copper oxide. Mix the raw materials evenly and add them to the crucible. The following steps are the same Example 1. It is measured that the solar energy transmitted by the 5mm thick glass plate made of the sample accounts for less than 0.25% of the total energy of the solar radiation on the surface (take the air quality as 1.5).

Embodiment 3

[0023] Take 18.03 grams of silicon dioxide, 9.27 grams of boric acid, 13.26 grams of sodium carbonate, colorants: 1.25 grams of dicobalt trioxide, 0.190 grams of dichromium trioxide, and 0.796 grams of copper oxide. Mix the raw materials evenly and add them to the crucible. The following steps are the same Example 1. It is measured that the solar energy transmitted by the 5mm thick glass plate made of the sample accounts for less than 0.1% of the total energy of the solar radiation on the surface (take the air quality as 1.5).

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PUM

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Abstract

The invention discloses a black glass for highly absorbing earth surface sunshine and preparation method thereof. The black glass is prepared with borosilicate glass and colouring agent, the colouring agent comprises cobalt oxide or cobaltous oxide, chrome oxide and copper oxide, in every 100 moles borosilicate glass, cobalt ions are 0.1-3 moles, chromium ions are 0.1-3 moles, copper ions are 0.5-4 moles. First, mixing borosilicate glass with the colouring agent uniformly in proportion, melting at 1300-1500 DEG C 1-6 hours; molding in moulds then processing annealing treatment in a annealing furnace at 450-600 DEG C 1-3 hours, then natural cooling to room temperature. The invention produces black glass compound colored by cobalt, chromium and copper ions, the black glass has good absorbing effect of sunshine of the entire sunshine wave band range (200nm-2500nm) reaching on earths surface.

Description

technical field [0001] The invention belongs to the glass production technology, and in particular relates to a black glass with high absorption of surface sunlight and a preparation method thereof. Background technique [0002] At present, there are many ways to make black glass, and the specific manufacturing process and materials used are very different. However, the black glass produced at present is only black in color, that is to say, it is only opaque to the visible band. Yes, while the wavelength of sunlight reaching the surface of the earth extends from 200nm to 2500nm, and the wavelength of the visible band is only in the range of 400nm-780nm. Surface sunlight also has a certain energy distribution in the ultraviolet and infrared bands outside the visible light , for these two bands, traditional black glass cannot guarantee its impermeability. For example, the patent application No. 03153789.8 "A Production Method for Crystal Black Glass" mentions the use of Fe 2...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C1/04C03B5/173C03C3/064C03C3/089C03C4/08C03C4/02
Inventor 戴能利陆培祥吴刚城杨光李玉华蒋鲁杰
Owner HUAZHONG UNIV OF SCI & TECH
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