High-strength ultrathin rock plate and preparation method thereof

Abstract

The invention discloses a high-strength ultrathin rock plate and a preparation method thereof, and relates to the technical field of rock plates. The high-strength ultrathin rock plate comprises a green body layer, and the top and the bottom of the green body layer are each provided with a zirconium oxide layer; the raw material of the blank layer is a rock plate blank, and the content of silicon dioxide in the chemical composition of the rock plate blank is less than 60% according to the mass percent; and the thickness of the high-strength ultrathin rock plate is less than or equal to 3mm. According to the technical scheme, the zirconium oxide layers are arranged at the top and the bottom of the blank body layer respectively, and zirconium oxide is uniformly distributed on the upper surface layer and the lower surface layer of the high-strength ultrathin rock plate after compression molding and sintering, so that the cracking phenomenon of the thin rock plate during later processing can be greatly reduced.

Description

technical field [0001] The invention relates to the technical field of rock slabs, in particular to a high-strength ultra-thin rock slab and a preparation method thereof. Background technique [0002] In the past two years, slate has become the new favorite of major ceramic companies. The thickness of slate ranges from 3mm to 20mm, and the size ranges from 900*1800mm to 1600*3800mm. There are even 1800*9000mm super-large slate. There are also various types. Ultra-thin slate with a thickness of ≤3mm is not only light in weight, easy to transport and install, but also can reduce the cost of raw materials and increase profits for ceramic enterprises. Ultra-thin slate is used in furniture panels, electrical panels, and walls. It is widely used in decoration and other fields. [0003] Since slate is a brittle material, it needs to be cut, polished, drilled, chamfered and other mechanical processing before being used as a home countertop or panel. Cutting and cracking, the cutti...

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Problems solved by technology

[0003] Because slate is a brittle material, it needs to be cut, polished, drilled, chamfered and other mechanical processing before it is used as a home countertop or panel. According to incomplete statistics, 30% to 50% of slate products will be mechanically processed at present. Cutting cracking, for ultra-thin rock slabs with a thickness of ≤3mm, the cutting cracking rate is higher, which seriously affects the later use of the product, increases production costs, and easy cracking during processing has become a bottleneck restricting the development of rock slabs

[0004] The Chinese patent application with the application number 202010954969.8 discloses a high-strength ceramic rock slab and its preparation method. The patent realizes the high strength of the rock slab by designing different compositions of the rock slab, bottom glaze and top glaze, but requires three In order to achieve the above effect, if there are fluctuations in raw materials of billet, bottom glaze and top glaze in actual production, it is not easy to achieve the purpose of improving the strength of rock slabs

[0005] The Chinese patent application with the application number 202010864905.9 discloses a non-fragile rock slab and its preparation method. The application increases the fracture modulus and failure strength of the rock slab by adding silicon carbide and reinforcing agents to the rock slab raw materials. Silicon reacts at high temperature to produce gas, which is easy to produce pore defects inside the rock slab and on the glaze surface, thereby reducing its fracture modulus and failure strength, and it is difficult to achieve the purpose of improving the fracture modulus and failure strength of the rock slab

[0006] The Chinese patent application with application number 202111178761.2 teaches a process technology for preparing toughened rock slabs with layered cloth in different regions. The application uses layered cloth to prepare the rock slab body and adds tetragonal zirconia to the raw material of the rock slab body Powder, due to the volume expansion of tetragonal zirconia during phase transition, it bridges the crack tip, prevents the crack from expanding and increases the crack induction energy of the toughened slab. The application requires the thickness of the slab to be 6mm-20mm. If the ultra-thin rock slab is made of layered cloth, the thickness of each layer is extremely thin, and it is difficult to achieve uniform cloth when re-distributing, so this method is not suitable for the preparation of ultra-thin rock slabs. Add 3-15% tetragonal zirconia powder, the cost is still high

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