Method for preparing ceramic article with nanometer antibacterial and catalytic effect

Abstract

The invention relates to a method for preparing a ceramic article with nanometer antibacterial and catalytic effect. The method comprises the following steps: preparing adobe into an article based on the needed shape; coating a layer of glaze on the surface of the article; after glaze is dried in shade, uniformly coating a layer of mixed solution containing zinc oxide nanoparticles (noble metal ions) on the surface of the glaze; and sintering at high temperature to finally obtain the ceramic article with the nanometer antibacterial and catalytic effect, wherein the mixed solution is formed byevenly mixing the following components based on predetermined weight percentage: water, water-soluble acrylic powder, an interface additive, a water-based adhesive, the zinc oxide nanoparticles (water-soluble noble metal salt) and the like. In the method, a layer of zinc oxide nanoparticle (noble metal nanoparticles) film is uniformly formed on the surface of the glaze of the ceramic article obtained by high-temperature sintering, thus the ceramic article has long-acting antibacterial, mildewproof and catalytic effects and the like.

Description

technical field [0001] The present invention relates to a kind of preparation method of the porcelain material article with nano antibacterial and catalytic effect, especially a kind of can make zinc oxide nano particle (and noble metal ion) be sintered and fixed on the glaze material surface of a porcelain material article, evenly Form a film of zinc oxide nanoparticles (and precious metal nanoparticles) to keep the surface of the glaze smooth and smooth, and have long-term antibacterial, anti-mildew and catalytic effects. Background technique [0002] In recent years, nanotechnology has been widely used in various fields, from consumer industries to cutting-edge high-tech fields, and has been recognized as one of the most important industries in the 21st century. In particular, the use of nanotechnology Technology applies precious metals (such as: gold, silver, palladium, platinum, rhodium and ruthenium, etc.), or other metal oxides (such as: zinc oxide, silicon dioxide, m...

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Problems solved by technology

However, in the aforementioned traditional practice, see figure 2 As shown, when the mixed solution 12 is applied to the surface of the glaze 11, the mixed solution 12 will pass through the different capillary pores on the surface of the glaze 11 and penetrate into the surface layer of the glaze 11. At the same time, part of the noble metal nano-ions or The zinc oxide nanoparticles 14 will also penetrate into the surface layer of the glaze 11 along with the mixed solution 12. At this time, since the capillary action between different capillary pores and the mixed solution 12 is not the same, the depth 121 of the mixed solution 12 penetrating into the surface layer of the glaze 11 It is also not uniform, therefore, the density of the 11 layers of glaze is unevenly distributed. Therefore, when the article is sintered at a high temperature, the density of the 11 layers of glaze will be unevenly distributed, and some precious metal nanoparticles may be oxidized. Zinc nanoparticles 14 have infiltrated into the surface layer of glaze 11, resulting in uneven rough surface 15 on the surface of glaze 11 of porcelain object 16 sintered at high temperature, please refer to image 3 As shown, and part of the noble metal nano-ions or zinc oxide nanoparticles 14 penetrated into the surface layer of the glaze 11 is completely covered by the high-temperature sintered glaze 11, so the above-mentioned traditional method can also be formed on the surface of the glaze 11 of the porcelain article 16. A noble metal nanoparticle film or zinc oxide nanoparticle film, but the distribution of noble metal nanoparticles or zinc oxide nanoparticle 13 in this film is extremely uneven, and it cannot fully exert its due antibacterial, antimildew, deodorizing and catalytic functions In addition, the most criticized problem of the above-mentioned traditional method is that the surface of the glaze material 11 of the porcelain material 16 will have uneven thermal stress distribution on the surface of the glaze material during high-temperature sintering due to the uneven density of the glaze material layer. The uneven rough surface 15 produced on the surface of the glaze not only seriously damages the aesthetic appearance of the porcelain article 16, but also easily hides dirt due to the rough surface 15.

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