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Nano TiO2 self-cleaning functional ceramic as well as preparation method and application thereof

A functional ceramic and self-cleaning technology, applied in the field of ceramic materials, can solve the problems of dirt formation, water droplets not easy to slip, and water marks formation

Pending Publication Date: 2020-06-05
福建省德化县华瓷新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the contact angle between ordinary ceramic glaze and water is relatively large, so water is easy to form water droplets on the surface of ordinary ceramics, and the water droplets are not easy to slip off. During the drying process of water droplets, it is very easy to absorb dust in the air. Formation of water marks, formation of dirt over time

Method used

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  • Nano TiO2 self-cleaning functional ceramic as well as preparation method and application thereof
  • Nano TiO2 self-cleaning functional ceramic as well as preparation method and application thereof
  • Nano TiO2 self-cleaning functional ceramic as well as preparation method and application thereof

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preparation example Construction

[0034]In the present invention, the preparation method of the ceramic matrix preferably includes the following steps: drying, crushing, sieving, granulating and pressing in sequence after mixing the raw materials for preparing the ceramic matrix to obtain a dry compact; Sintering treatment to obtain a ceramic matrix; the sintering temperature is 1350-1420°C, and the sintering time is 60min-8h. In the present invention, the raw material for preparing the ceramic matrix is ​​preferably soil satisfying the above material ratio. In the present invention, the moisture content of the material obtained after drying is preferably ≤3%; the mesh size of the sieve is preferably 150 mesh; and the pressing treatment is preferably performed by a 100T two-way dry press. In the present invention, the sintering temperature is preferably 1380-1420°C, more preferably 1400°C.

[0035] The present invention also provides nano-TiO described in the above-mentioned technical scheme 2 The preparatio...

Embodiment 1

[0048] (1) Take 90kg of soil and dry it, with a moisture content of 3%, then crush it into fine particles and pass through a 150-mesh sieve for granulation, then put the particles into a mold, and press them with a 100T two-way dry press to obtain a dry billet ; Wherein the main chemical composition and its mass fraction in the dry billet are: Al 2 o 3 21%, SiO 2 72%, K 2 O 6.1%, Na 2 O 0.11%, Fe 2 o 3 0.7%, other trace components CaO, MgO;

[0049] Fire the dry compact at 1360°C for 7.5 hours to obtain a ceramic matrix;

[0050] (2) Spray glaze water on the surface of the ceramic substrate, and then perform low-temperature firing at 1100 ° C for 6 hours to obtain nano-TiO 2 Self-cleaning functional ceramics; the main chemical composition and mass ratio of glaze water are SiO 2 :Al 2 o 3 :CaO:NaO:TiO 2 :H 2 O=85:2:1.5:1.5:3:7, wherein the particle size of silicon dioxide is ≤50μm; the particle size of aluminum oxide is ≤50μm; the particle size of titanium dioxide i...

Embodiment 2

[0052] Prepare ceramic substrate according to the method for embodiment 1;

[0053] Spray glaze water on the surface of the ceramic substrate, and then fire at 1050 °C for 5 hours at a low temperature to obtain nano-TiO 2 Self-cleaning functional ceramics; the main chemical composition and mass ratio of glaze water are SiO 2 :Al 2 O: CaO: NaO: TiO 2 :H 2 O=84:3:1.5:1.5:3.5:6.5, wherein the particle size of silicon dioxide is ≤50μm; the particle size of aluminum oxide is ≤50μm; the particle size of titanium dioxide is 5~20μm, and the particle size of titanium dioxide is 5~ The volume percentage of 8 μm titanium dioxide is 85%.

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Abstract

The invention relates to the technical field of ceramic materials, and provides nano TiO2 self-cleaning functional ceramic as well as a preparation method and an application thereof. The glaze layer of the nano TiO2 self-cleaning functional ceramic provided by the invention contains 3-7 parts by mass of titanium dioxide; after titanium dioxide in the glaze layer is illuminated, a contact angle between the ceramic surface and water drops or oil drops is greatly reduced, and the ceramic surface is completely infiltrated by water or oil, so that stains on the ceramic surface can be easily and cleanly washed by water, and the ceramic surface is kept clean; in addition, under the sun illumination condition, titanium dioxide in the glaze layer can absorb light of 280-320 nm in light waves, a photocatalysis reaction is conducted, and organic matter such as formaldehyde and bacteria can be decomposed into carbon dioxide and water. The nano TiO2 self-cleaning functional ceramic provided by theinvention has the functions of self-cleaning, degradation of organic matters by a photocatalyst, antibiosis, sterilization, pollution prevention, deodorization and air purification.

Description

technical field [0001] The invention relates to the technical field of ceramic materials, in particular to a nano-TiO 2 Self-cleaning functional ceramics and its preparation method and application. Background technique [0002] Ceramic products are widely used in building decoration materials, such as decorative wall tiles and so on. The contact angle between the surface of the ceramic product and the liquid directly determines the self-cleaning degree of the surface of the ceramic product. For an ideal solid surface, the contact angle is the most intuitive way to judge whether a liquid can wet the surface. When θ<90°, it is wet; when θ>90°, it is not wet. The study found that the larger the contact angle, the more difficult the droplet is to spread, and the rounder the shape of the droplet; the smaller the contact angle, the easier the droplet is to spread, and the closer the droplet is to the water film, the better the self-cleaning effect. [0003] At present, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C8/00C04B35/14C04B35/622C04B41/86A01N25/08A01N59/16B01J21/06B01J23/04B01J35/00A01P1/00E04F13/14
CPCC03C8/00C04B35/14C04B35/622B01J21/063B01J23/04A01N59/16A01N25/08E04F13/142C04B41/5022C04B41/86C04B2235/3217C04B2235/3201C04B2235/3272C04B2235/3206C04B2235/3208B01J35/39
Inventor 林信浔林福文
Owner 福建省德化县华瓷新材料科技有限公司
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