A kind of cordierite transparent wear-resistant glaze and preparation method thereof

Abstract

The invention discloses a cordierite transparent wear resistant glaze, which comprises the following components in percentage by weight: 50 to 55% of kaolin, 25 to 32% of talcum, 2 to 8% of albite, 5 to 8% of calcium containing compound, 4 to 8% of boric acid, 1 to 5% of lithium carbonate, and the balance being quartz. The invention also discloses a preparation method of the cordierite transparent wear resistant glaze. The wear resistant performance of conventional ceramic tiles is enhanced, the raw material utilization rate is improved, during the preparation process, no nucleating agent is needed, the sintering temperature is low, the sintering technology is simple, and the glaze coloring caused by a nucleating agent is avoided.

Description

technical field [0001] The invention relates to a glaze and a preparation method thereof, in particular to a cordierite transparent wear-resistant glaze and a preparation method thereof. Background technique [0002] The molecular formula of cordierite is 2MgO 2Al 2 o 3 ·5SiO2 2 , it has three crystal forms. It exists in the form of μ-cordierite at low temperature, also known as magnesium aluminum silicate, which belongs to the rhombohedral crystal system; crystallizes at 950°C to form β-cordierite, which belongs to the orthorhombic crystal system and exists in nature. A form of α-cordierite at high temperature, which belongs to the hexagonal plate. Because of its low thermal expansion coefficient, low thermal conductivity, good thermal shock resistance, low dielectric constant, and low dielectric loss, cordierite is widely used in automobile exhaust emissions, foam ceramics, honeycomb ceramics, and turbine engines. As well as various aspects of industrial heat exchanger...

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Problems solved by technology

Moreover, the particle size of the transparent frit is strictly required. If the particle size is too coarse and the base glaze has poor bonding force, it will easily peel off; if it is too fine, it will easily melt into the base glaze and reduce the wear resistance effect.

However, this patent does not explain in principle that there are transparent frit particles in the transparent glaze, and the glaze surface will be transparent, because if there are particles in the glaze surface, the viscosity around the particles is very large, and the air bubbles are difficult to get rid of; followed by transparent glaze and The bonding of the transparent frit is difficult to control, and there is no guarantee that the transparent frit particles will not react with the transparent glaze to precipitate other phase grains, because the transparent glaze and the transparent frit particles are both silicon-aluminum-calcium systems

[0004] Patent Nos. 103044080A and 103030435A for wear-resistant glazes for daily ceramics and their preparation methods disclose a method for glaze wear resistance. The wear resistance principle is to improve wear resistance with the help of free alumina, but due to its high aluminum content And high barium content will greatly increase the cost of raw materials and firing energy consumption, and the transparency of the glaze can only be achieved by controlling the high refractive index of the glass substrate (the refractive index of the substrate must be close to the refractive index of free alumina)

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