Photochromic glass with high elasticity modulus and preparation method thereof

Abstract

The invention discloses photochromic glass with a high elasticity modulus. The photochromic glass comprises the following components in percentage by weight: 2-8% of Li2O, 15-24% of Al2O3, 0-7% of B2O3, 50-72% of SiO2, 0-8% of K2O, 0-4% of MgO, 0-1% of CaO, 0-15% of Na2O and 0.5-8% of WO3; and the photochromic glass is prepared according to the following steps: preparing materials: preparing the glass raw materials according to the above components; performing mixing and ball milling: loading the prepared glass raw materials into a ball mill, and performing full mixing and ball milling; performing melting: melting the milled glass raw materials in a smelting furnace, and enabling the glass material liquid to be clarified and uniform; performing forming: pouring the glass material liquid into a mold for forming; and performing annealing: placing the formed glass sample into an annealing furnace, and performing annealing to finally obtain the photochromic glass with the high elasticity modulus. The prepared photochromic glass provided by the invention has the characteristics of the high elasticity modulus, excellent color developing effects, fast color change response time, low costs, simple and convenient manufacture and the like.

Description

technical field [0001] The invention relates to the technical field of special glass manufacturing, in particular to a photochromic glass with high elastic modulus and a preparation method thereof. Background technique [0002] Photochromic glass is a glass that changes its color when exposed to light of the appropriate wavelength, and returns to its original color when the light source is removed. In the existing photochromic glass, a photochromic film is prepared on a glass substrate, but the film material has problems of damage, deterioration and failure, and the process is complicated. [0003] Inorganic photochromic glass materials are formed by adding photosensitive materials to the matrix glass, which are melted and heat-treated. The discoloration mechanism is mainly due to the change of the material structure of the photosensitive material after being irradiated by light, resulting in a change in the absorption spectrum, and then the color is obvious. Change, there ...

AI Technical Summary

Problems solved by technology

The existing photochromic glass is to prepare a photochromic film on a glass substrate, but the film material has problems of damage, deterioration and failure, and the process is complicated

[0003] Inorganic photochromic glass materials are formed by adding photosensitive materials to the matrix glass, which are melted and heat-treated. The discoloration mechanism is mainly due to the change of the material structure of the photosensitive material after being irradiated by light, resulting in a change in the absorption spectrum, and then the color is obvious. change, there is no problem of film damage and failure; however, the current inorganic photochromic glass is mainly added with rare earth metals, which is expensive and not suitable for large-scale mass production; and the elastic modulus of the glass is also low