Glass composition and preparation method thereof

Abstract

The invention provides an environmentally-friendly glass composition uniform in color, resistant to high temperature and high in hardness. The environmentally-friendly glass composition contains 35-70% of SiO2, 10-35% of Al2O3, 0-25% of MgO, 0-25% of ZnO, 1-2% of Al2O3 / (MgO+ZnO), 0.1-4% of NiO and / or 0.1-4% of Ni2O3 and / or 0.05-2% of CoO and / or 0.05-2% of Co2O3 and / or 0.2-3% of Fe2O3 and / or 0.1-4% of MnO2 and / or 0.4-8% of Er2O3 and / or 0.4-8% of Nd2O3 and / or 0.5-4% of Cu2O and / or 0.4-8% of Pr2O3 and / or 0.5-4% of CeO2. The glass composition can show all kinds of colors by adding colorants capable of adjusting the colors of glass to a matrix glass composition.

Description

technical field [0001] The invention relates to a glass composition, especially a color glass composition and a preparation method thereof. Background technique [0002] With the continuous advancement of science and technology and the continuous improvement of people's living standards, the requirements for green, environmental protection and health are put forward for colored decorative products, especially the decorative products made of colored glass, which put forward the requirements of environmental protection, high hardness and high temperature resistance. [0003] The Mohs hardness of ordinary color glass is 5H, while the Mohs hardness of commonly used knives is 5.5-6H, and the Mohs hardness of silica contained in gravel or dust is 7H, which can cause damage to the surface of the existing decorative glass. Scratches or abrasions will affect its decorative effect and service life; at the same time, ordinary colored glass is not resistant to high temperatures and begi...

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Problems solved by technology

[0003] The Mohs hardness of ordinary color glass is 5H, while the Mohs hardness of commonly used knives is 5.5-6H, and the Mohs hardness of silica contained in gravel or dust is 7H, which can cause damage to the surface of the existing decorative glass. Scratches or abrasions will affect its decorative effect and service life; at the same time, ordinary colored glass is not resistant to high temperatures and begins to soften at 500-800°C, so it cannot be further processed and used at high temperatures; some ordinary colored glass is colored with heavy metals, such as green glass, Most of them are colored with Cr ions, and some ordinary colored glasses contain PbO in the basic components, which violates the requirements of environmental protection and affects the use

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