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Method for preparing photochromic glass

A photochromic glass and glass technology, applied in the field of glass materials, can solve the problem of high cost, achieve good photochromic performance, reduce manufacturing costs, and achieve bright colors.

Inactive Publication Date: 2014-08-27
HANGZHOU NABEL GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention is aimed at current rare earth Nd 2 o 3 Photochromic glass must add other rare earth oxides to help color development and discoloration, and the problem of high cost provides a new method for preparing photochromic glass

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Li 2 O, Na 2 O, K 2 O, Al 2 o 3 , SiO 2 , B 2 o 3 、Nd 2 o 3 The raw materials of the ingredients are Li according to the weight percentage of the chemical composition of the glass. 2 O 7%, Na 2 O9%, K 2 O 4%, Al 2 o 3 15%, SiO 2 49%, B 2 o 3 16%, plus Nd 2 o 3 3% proportion of the ingredients, put the mixture into the ball mill for full mixing and grinding, the ball milling time is controlled at 1h. Melt the ground mixture in a furnace at a melting temperature of 1300°C and keep it warm for 2 hours to fully clarify and homogenize the glass frit liquid. Then the molten glass is quickly poured into a preheated stainless steel plate mold for molding, and the formed glass sample is immediately placed in an annealing furnace, kept at 500°C for 2 hours, and the sample is cooled to room temperature with the furnace to obtain the desired purple-red light. Photochromic glass.

Embodiment 2

[0016] Li 2 O, Na 2 O, K 2 O, Al 2 o 3 , SiO 2 , B 2 o 3 、Nd 2 o 3 The raw materials of the ingredients are Li according to the weight percentage of the chemical composition of the glass. 2 O 7%, Na 2 O 11%, K 2 O 2%, Al 2 o 3 15%, SiO 2 49%, B 2 o 3 16%, plus Nd 2 o 3 4% of the ingredients, put the mixture into the ball mill for full mixing and grinding, the ball milling time is controlled at 55min. Melt the ground mixture in a furnace at a melting temperature of 1340°C and keep it warm for 2 hours to fully clarify and homogenize the glass frit liquid. Then the molten glass is quickly poured into a preheated stainless steel plate mold for molding, and the formed glass sample is immediately placed in an annealing furnace, kept at 500°C for 2 hours, and the sample is cooled to room temperature with the furnace to obtain the desired purple-red light. Photochromic glass.

Embodiment 3

[0018] Li 2 O, Na 2 O, K 2 O, Al 2 o 3 , SiO 2 , B 2 o 3 、Nd 2 o 3 The raw materials of the ingredients are Li according to the weight percentage of the chemical composition of the glass. 2 O 7%, Na 2 O 7%, K 2 O 6%, Al 2 o 3 15%, SiO 2 49%, B 2 o 3 16%, plus Nd 2 o 3 6% proportion of ingredients, put the mixture into the ball mill for full mixing and grinding, and the ball milling time is controlled at 50min. Melt the ground mixture in a furnace at a melting temperature of 1370°C and keep it warm for 2 hours to fully clarify and homogenize the glass frit liquid. Then the molten glass is quickly poured into a preheated stainless steel plate mold for molding, and the formed glass sample is immediately placed in an annealing furnace, kept at 500°C for 2 hours, and the sample is cooled to room temperature with the furnace to obtain the desired purple-red light. Photochromic glass.

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Abstract

The invention relates to a method for preparing photochromic glass of which the glass body presents different colors under different light sources. The preparation method comprises the following steps: (1) burdening; (2) mixing and performing ball-milling; (3) melting; (4) molding; and (5) annealing. The photochromic glass prepared by the method is claret-colored under solar radiation, is red in an incandescent light bulb, is ultramarine in a fluorescent lamp and has the characteristics of independent Nd2O3 developing and color change, good developing effect, fast color change response time, low cost, simplicity and convenience in manufacture and the like.

Description

technical field [0001] The invention belongs to the field of glass materials and relates to a method for preparing a photochromic glass material whose glass body exhibits different colors under different light sources. Background technique [0002] Inorganic photochromic glass material is formed by adding photosensitive material to matrix glass, melting and heat treatment. The discoloration mechanism is mainly that the material structure changes after the photosensitive material is irradiated by light, resulting in a change in the absorption spectrum, and then a significant change in color. Neodymium violet is a pigment that absorbs light of the same frequency as it. When the light source excites it, it absorbs a large amount of light waves with the same frequency (417~455nm) and produces a complementary color. This also leads to its color-changing properties. This is due to changes in light absorption and different colors can appear. For example, adding neodymium oxide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/095C03C4/06
Inventor 焦国豪余爱民张勇
Owner HANGZHOU NABEL GROUP
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