Glass composition and preparation method thereof

Abstract

The invention provides an environment-friendly glass composition with uniform color, high temperature resistance and high hardness. The environment-friendly glass composition comprises the following components: 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. According to the invention, a colorant capable ofadjusting the color of the glass is added into the matrix glass composition, so that the glass disclosed by the invention can show various colors.

Description

[0001] This application is a divisional application of a Chinese invention patent application with an application date of December 23, 2016, an application number of 201611203998.0, and an invention title of "glass composition and its preparation method". technical field [0002] The invention relates to a glass composition, especially a color glass composition and a preparation method thereof. Background technique [0003] 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. [0004] 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...

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Problems solved by technology

[0004] The Mohs hardness of ordinary colored 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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