Novel microcrystalline glass ceramic composite board and preparation method thereof

Abstract

The invention relates to the technical field of building materials and discloses a novel microcrystalline glass ceramic composite board and a preparation method thereof. Calcium oxide and magnesium oxide are introduced into microcrystalline glass and simultaneously a small amount of zinc oxide is added. The microcrystalline glass precipitates a pyroxene crystalline phase and simultaneously remains a crystalline phase of zinc silicate, the crystallization breaks through the grain boundary, and crystallized textures with various patterns are grown. The cost is reduced, and simultaneously air holes in the surface of the microcrystalline glass ceramic composite board are easily controlled and greatly reduced by utilizing the characteristics of large surface tension and low viscosity of the zinc oxide, so that the defect of poor exhausting property of the microcrystalline glass adopting pyroxene as the crystalline phase is avoided; since the novel microcrystalline glass ceramic composite board adopts once firing, the firing period can be shortened to be 60 minutes, the bottleneck of twice firing and long firing period in the traditional process is broken through, the energy consumption is greatly reduced, and the current low-carbon and environment-friendly slogans are responded.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a novel glass-ceramic composite board and a preparation method thereof. Background technique [0002] Glass-ceramic composite board is a high-end decorative building material product. It is crystal clear, elegant, naturally grown and varied stone-like texture, brightly colored layers, uncanny appearance decoration effect, and free from pollution, It is easy to clean, has excellent physical and chemical properties, and has stronger weather resistance and weather resistance than stone, so it is favored by high-end building materials markets at home and abroad. [0003] The first generation of glass-ceramic composite panels was widely used in the middle and late 1990s. Its crystalline phase is wollastonite. The crystallization feature is that it grows along the grain edge of the glass-ceramic grain and grows toward the inside of the grain. A collection of particles appea...

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Problems solved by technology

[0005] However, the price of zinc oxide is expensive, especially the introduction of such a large amount of zinc oxide makes the cost of this microcrystalline product higher, which affects the market competitiveness and sales of this product, and is not conducive to the marketing of this high-end product.

At present, calcium oxide and magnesium oxide are used in the market to completely replace zinc oxide to produce glass-ceramics with pyroxene crystals including diopside. Although the cost of pyroxene crystals is greatly reduced, it also breaks through the original particle boundary. Recombined into natural growth textures with different shapes such as spherical and flow-like, but according to the sintering theory of glass pellets, the size of the sintered porosity is proportional to the surface tension of the material, inversely proportional to the viscosity of the material, and inversely proportional to the particle size of the material Inversely proportional to this, the exhaust of this kind of glass-ceramic with pyroxene as crystal phase is not as good as that of glass-ceramics with zinc silicate as crystal phase, so new glass-ceramic needs to be developed urgently

[0006] In addition, most of the traditional glass-ceramic composite panels adopt secondary firing, which has a long firing cycle and high energy consumption, which is not conducive to energy saving and emission reduction.

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