Glass composition for absorbing ultraviolet ray and infrared ray and its application

Abstract

The invention relates to a glass composition for absorbing ultraviolet ray and infrared ray, which comprises a glass basic composition (weight ratio): 60-75% of SiO2, 8-20% of Na2O, 3-12% of CaO, 0.1-5% of Al2O3, 2-5% of MgO; 0.02-7% of K2O, 0.1-5% of BaO and 0.01-0.4% of SO3; and a glass body coloring coordination part for absorbing ultraviolet ray and infrared ray: 0.22-1.35% of Fe2O3, 0.001-0.8% of ZrO2+HfO2, 0-0.5% of Cl, 0-2% of B2O3, 0.01-0.8% of TiO2, 0.001-0.06% of CuO; 0-2.0% of Br, 0-0.02% of MnO, 0-2.0% of F, 0.001-0.5% of Sr and 0.005-2.2% of CeO2. The redox ratio of Fe2O3 in the glass composition is 0.4-0.8. Rare metals and rare earth metal compound with a certain amount can be added in the glass composition, limitation of the current heat insulation glass can be breakthrough, chemical oxygen demand of the raw materials and the redox ratio can be controlled in a reasonable mode, obstruction to ultraviolet ray, infrared ray and total energy can be effectively realized, visible light transmittance is simultaneously increased, so that heat insulation glass capable of strongly absorbing the ultraviolet ray and near infrared can be obtained.

Description

technical field [0001] The invention relates to a glass composition, especially a glass composition capable of strongly absorbing ultraviolet rays and infrared rays and its application. Background technique [0002] Due to global warming, related foreign companies, represented by PPG of the United States, have invested a lot of research in absorbing ultraviolet and near-infrared heat insulating glass, and applied for more than 300 patents in this area internationally, of which Japan is here More than 100 patents have been applied for in one field, accounting for one-third of the world's glass energy-saving and emission-reduction technology patents. The main companies applying for patents in Japan include CENTRA, GLASS, CLLTD, NIPPON SHEETGLASS COLTD, and ASAHIGIASS. [0003] The glass system capable of absorbing ultraviolet rays and near-infrared rays researched by NIPPON SHEET GLASS COLTD is sodium calcium silica alkali glass, and the coloring component is Fe 2 o 3 0.4-0....

AI Technical Summary

Problems solved by technology

A patent for infrared insulation and heat-absorbing float glass (application number: 201110189471.8), due to containing SnO 2 If ZnO and ZnO are too high, the glass surface is prone to flaws, which cannot be formed by float process, and seriously affects the visible light transmittance, and the heat insulation effect is not ideal

[0014] To sum up, the current technical level of super heat-absorbing glass at home and abroad is limited to the misunderstanding of using ferrous oxide alone to reduce the transmittance of near-infrared rays, which is difficult to achieve from the current known technology of

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