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CN-116330445-A - Method for preparing archaized brick with wear-resistant glaze and archaized brick

CN116330445ACN 116330445 ACN116330445 ACN 116330445ACN-116330445-A

Abstract

The invention discloses a method for preparing an archaized brick with wear-resistant glaze and the archaized brick, wherein the method comprises the following steps: providing slurry containing wear-resistant particles and an unfired archaized brick, wherein the unfired archaized brick comprises a green body layer, a pattern layer and a glaze layer which are sequentially laminated from bottom to top; and (3) carrying out electrostatic spraying on the slurry containing the wear-resistant particles on the surface of the glaze layer of the archaizing brick, standing for preset time, and then sintering to obtain the archaizing brick with the wear-resistant glaze surface. According to the invention, slurry containing wear-resistant particles is sprayed on the surface of the unfired archaized brick glaze by an electrostatic spraying process, most of the wear-resistant particles in the slurry containing the wear-resistant particles are driven along with the penetration of the solvent of the slurry into the glaze layer, so that the slurry penetrates into the pores of the loose glaze superficial layer, and a small part of the wear-resistant particles are remained on the surface of the glaze layer. In the firing process, the wear-resistant particles with high hardness on the surface of the glaze are supersaturated, and the wear-resistant particles with high hardness are enriched and embedded in the surface of the glaze, so that the wear resistance of the glaze surface of the archaized brick is improved.

Inventors

  • SHEN RONGWEI
  • GU ZHANWEN
  • DENG XINGZHI
  • DENG ZHENWEI
  • WEI YUTING

Assignees

  • CHONGQING WONDERFUL CERAM CO LTD

Dates

Publication Date
20230627
Application Date
20230314
Priority Date
20230314

Claims (10)

  1. 1. A method of making an archaized tile having an abrasion resistant glaze comprising the steps of: providing slurry containing wear-resistant particles and an unfired archaized brick, wherein the unfired archaized brick comprises a green body layer, a pattern layer and a glaze layer which are sequentially laminated from bottom to top; and (3) carrying out electrostatic spraying on the slurry containing the wear-resistant particles on the surface of the glaze layer of the archaized brick, standing for preset time, and then sintering to obtain the archaized brick with the wear-resistant glaze surface.
  2. 2. The method of claim 1, wherein the wear resistant particles comprise at least one of cordierite, mullite, spinel, quartz, corundum, zircon, and silane-based organics.
  3. 3. The method of claim 2, wherein when the wear resistant particles are at least one of cordierite, mullite, spinel, quartz, corundum, zircon, the wear resistant particles have a particle size in the range of 0.1-5 μm.
  4. 4. A method according to claim 3, wherein the method of preparing the slurry containing wear resistant particles comprises the steps of: 100 parts of wear-resistant particles, 0.35 part of dispersing agent and 300-600 parts of water are mixed according to parts by mass to obtain the slurry containing the wear-resistant particles.
  5. 5. The method of claim 4, wherein the dispersant comprises at least one of sodium tripolyphosphate, polyethylene glycol.
  6. 6. The method according to claim 4, wherein the concentration is 50 to 120g/m 2 And (3) the slurry containing the wear-resistant particles is sprayed on the surface of the glaze layer of the archaized brick in an electrostatic manner.
  7. 7. The method according to claim 2, wherein when the abrasion resistant particles are silane-based organic matters, the method for preparing the slurry containing the abrasion resistant particles comprises the steps of: 100 parts of silane organic matters and 200-300 parts of water are mixed according to the parts by mass to obtain the slurry containing the wear-resistant particles.
  8. 8. The method of claim 7, wherein the silane-based organic matter comprises at least one of isobutylene triethoxysilane, monosilane, disilane.
  9. 9. The process according to claim 7, wherein the concentration of the catalyst is 80 to 120g/m 2 And (3) the slurry containing the wear-resistant particles is sprayed on the surface of the glaze layer of the archaized brick in an electrostatic manner.
  10. 10. An archaized tile having an abrasion resistant glaze, prepared by the method of any one of claims 1-9.

Description

Method for preparing archaized brick with wear-resistant glaze and archaized brick Technical Field The invention relates to the technical field of ceramics, in particular to a method for preparing an archaized brick with wear-resistant glaze and the archaized brick. Background Ceramic tiles are plate-like or block-like architectural ceramic articles for covering walls and floors made from clay, feldspar and quartz as main raw materials, as defined in GB/T4100-2015. The glaze is a material which is formed by melting the surface of a green body of the ceramic tile after being prepared and processed and has a covering or decoration effect on a glass layer or a mixed layer of glass and crystals. An archaizing brick is one of glazed bricks, and the glazed surface is matt glaze. The matt glaze is obtained by sufficiently melting the glaze at high temperature and then slowly cooling, wherein certain components in the glaze are supersaturated to separate out microcrystals or hidden microcrystals, thereby obtaining velvet matt glaze. Crystals in the matt glaze are usually willemite, wollastonite, anorthite, celsian, mullite and the like. The matt glaze has certain wear resistance due to the fact that the matt glaze has anorthite, celsian and other crystals. The wear resistance of the matt glaze is improved, and the common method is to increase the variety and the number of wear-resistant crystals in the glaze. The manner of introducing the wear-resistant crystals in the matt glaze is generally divided into two types, as shown in fig. 1: firstly, the wear-resistant particles are generated in situ, the concentration of components forming the wear-resistant particles in the glaze is high, crystallization is carried out in the cooling process after melting, and the generated particles have good wear resistance, so that the wear-resistant glaze is formed. The refractive index of the crystal in the glaze must be close to that of glass under the precondition that the polished glaze must be wear-resistant. Therefore, the wear-resistant crystal phase is generally selected from low-refractive-index crystals such as cordierite and anorthite. The method for improving the wear resistance of the full polished glaze is limited, is influenced by a firing system, a product formula, a product color and the like, is difficult to reach five levels, is usually 4 levels, and is easy to fall to 3 levels. The main reason is that the crystal in the glaze layer is generated, and is influenced by the glaze formula, the raw material components for the glaze, the processing mode, the fineness of glaze slurry, the thickness of the glaze layer, the firing schedule and the like, so that the quantity of the crystal generated in the glaze can fluctuate, the quantity of the crystal on the glaze surface changes, and finally, the wear resistance of the product is unstable. And secondly, the raw materials are introduced into the glaze formula in an externally-added mode. Wear-resistant inorganic particles are introduced into the glaze, and the wear-resistant particles are embedded in the glaze layer after firing, so that the wear resistance of the glaze can be improved. However, the additional approach of incorporating wear resistant particles has three disadvantages. 1) The added wear-resistant particles are high in general refractoriness, the refractoriness of the glaze is easily improved by introducing a certain amount, the glaze is difficult to melt at a given temperature, a compact glaze layer is difficult to form, the wear-resistant particles are embedded in the loose glaze layer, and the wear resistance is reduced. Enough flux must be added to fire the glaze to maturity. However, in this way, the wear-resistant particles such as cordierite, mullite, spinel, quartz and the like are liable to react with the flux and melt into a glass phase, resulting in failure of the effect of the wear-resistant particles to improve wear resistance. 2) The mass-to-effect ratio of the wear resistant particles is not high. Since the wear resistance is a physical property of the glaze surface, it is determined by the composition of the glass phase and crystal phase of the glaze surface. The externally introduced wear-resistant particles are dispersed in the glaze layer, so that the quality effect of improving the wear resistance of the glaze is lower. Accordingly, the prior art is still in need of improvement and development. Disclosure of Invention Based on the defects of the prior art, the invention aims to provide a method for preparing an archaized brick with a wear-resistant glaze and the archaized brick, and aims to solve the problem that the wear-resistant particles caused by directly introducing wear-resistant particles into the glaze are embedded in the whole glaze layer, so that the wear resistance of the glaze of the archaized brick cannot be effectively improved. The technical scheme of the invention is as follows: in a first aspect of the present inventi