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Preparation method for green colorant and green glass for shielding ultraviolet and obtained product

A colorant and green technology, applied in the field of colorants, can solve the problems of air pollution, color instability, high cost of iron-manganese coloring, etc., and achieve the effect of cost reduction, color stability, and good shielding of ultraviolet rays

Active Publication Date: 2016-06-22
UNIV OF JINAN
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Sulfur-carbon coloring is generally used to prepare brown glass, but there are some problems in the preparation of sulfur-carbon colored glass, such as: sulfur deposits and bubbles are prone to appear during the melting process, and the use of sulfur or sulfate will also cause air pollution. The production process is not easy to control, and the color is prone to instability
Iron-manganese coloring does not have the problem of volatilization of colorants, and can avoid defects and environmental pollution caused by sulfur-carbon coloring. However, the cost of iron-manganese coloring is much higher than that of sulfur-carbon, and it is basically not used in China.

Method used

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  • Preparation method for green colorant and green glass for shielding ultraviolet and obtained product

Examples

Experimental program
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Effect test

Embodiment 1

[0039] 1. Preparation of amino-functionalized silica sand

[0040] 1.1. Add 6g of silica sand and 1.08g of CTAB into a 250ml Erlenmeyer flask, then add 100ml of distilled water, place in a water bath constant temperature oscillator (rotating frequency 185~225rpm) at 60°C for 10min, then add 30ml of 0.3M NaOH, and then add 4.5ml of TEOS dropwise. Continue to shake the reaction at this temperature for 3 hours, then take it out, wash it with distilled water five times, and dry it.

[0041] 1.2. Repeat the above steps 4 times to obtain coated silica sand 5 times. Dry the silica sand at 90°C for 3 hours, heat it up to 550°C at a rate of 1°C / min and calcinate it for 6 hours to remove hexadecyltrimethylammonium bromide. Porous silica modified silica sand.

[0042] 1.3. Take 5g of the above-mentioned porous silica-modified silica sand, put it in a 250ml three-necked flask, add 100ml of anhydrous toluene and 3ml of 3-aminopropyltriethoxysilane (APTES), condense and reflux at 115°C for...

Embodiment 2

[0047] 1. Preparation of amino-functionalized silica sand: same as Example 1.

[0048] 2, the preparation of coloring agent: get the Cr(NO of 150ppm 3 ) 3 Solution 50ml, adjust the pH of the solution to 4.5, add 0.5g of amino-functionalized silica sand, absorb at a constant temperature of 25°C for 1 hour, filter after adsorption, and dry the product at 90°C to obtain the colorant, Cr 3+ The adsorption capacity is 5.84mg / g amino-functionalized silica sand. In order to meet the required amount of glass preparation, this operation was repeated 40 times to obtain the required amount of colorant.

[0049] 3. Preparation of green glass: Referring to Example 1, the difference is that the colorant used is the colorant of this example, and the resulting glass is green.

Embodiment 3

[0051] 1. Preparation of amino-functionalized silica sand

[0052] 1.1 Put 1.08g of cetyltrimethylammonium bromide, 6g of silica sand, and 100mL of water on a shaker at 60°C for 10 minutes (rotating frequency 185~225rpm), then add 30ml of 0.3M sodium hydroxide solution, and then Add 4.5mL tetraethyl orthosilicate dropwise, and continue to shake the reaction at this temperature for 3h, so that the silicon dioxide formed by the hydrolysis of tetraethyl orthosilicate is coated on the surface of the silica sand; after the reaction, wash, filter, and take The precipitate was dried at 90°C for 3 hours, and the dried precipitate was heated to 550°C at a heating rate of 1°C / min and calcined for 6 hours to remove cetyltrimethylammonium bromide, resulting in porous silica-modified silica sand. After testing, its specific surface area is 260.56m 2 / g.

[0053] 1.2 Take 2g of the above-mentioned porous silica-modified silica sand, put it in a 250ml three-neck flask, add 100ml of anhydro...

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Abstract

The invention discloses a preparation method for a green colorant and green glass for shielding ultraviolet and an obtained product.According to the method, the surface of silica sand is coated with porous silicon dioxide so that the silica sand can be modified, then the modified silica sand is mixed with 3-aminopropyltriethoxysilane and methylbenzene for a reflux reaction at the temperature of 80-115 DEG C, amino-functionalized modified silica sand is obtained and mixed with waste water containing Cr3+ or a water solution containing Cr3+, Cr3+ is adsorbed, and the green colorant is obtained; the green colorant is mixed with other raw materials, and the green glass can be prepared.Through the preparation method, the purpose of waste water treatment can be achieved, resources are fully recycled, and the preparation cost of the colorant is reduced; the green glass prepared from the colorant conforms to the daily use habit of people, has a good ultraviolet shielding effect, can better protect beer and other products and can be used for packing beer, medicine and the like.

Description

technical field [0001] The invention relates to a preparation method of a green colorant for glass and the obtained colorant, and also relates to a preparation method of a green glass shielding ultraviolet rays and the obtained glass, belonging to the technical field of glass manufacturing. Background technique [0002] Glass is often used as packaging material due to its high chemical stability. Brown glass bottles can be used in the packaging of beer and medicines, mainly to eliminate or reduce the light in the ultraviolet band (less than 400nm wavelength) from passing through the packaging bottles, thereby protecting the inner packaging of the bottles. In China, medicines are generally packaged in brown glass, while beer is usually packaged in green glass colored with chromite. The actual spectrum curve measurement shows that the green beer bottle still has a high transmittance when the wavelength is less than 400nm, which will cause some yeast in the beer to lose its ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C1/04C03C3/087C03C4/08
CPCC03C1/04C03C3/087C03C4/085
Inventor 刘世权亓玲陶文宏
Owner UNIV OF JINAN
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