阅读说明：本技术 一种自洁陶瓷瓦及其制备方法 (Self-cleaning ceramic tile and preparation method thereof ) 是由 童垸林 钟贵平 王东 于 2019-11-01 设计创作，主要内容包括：本发明公开了一种自洁陶瓷瓦及其制备方法,所述自洁陶瓷瓦是在陶瓷瓦表面涂有一层憎水层,具体为在陶瓷瓦生产过程中的施釉后,再喷上一层改性釉料,再氧化烧成,出窑时再在瓦面喷有机硅防水剂得到。这样陶瓷瓦表面不粘水,不吸附灰层,下雨时雨水很容易将瓦表面的灰层冲洗干净,起到自动清洁保持装饰效果的的效果。(The invention discloses a self-cleaning ceramic tile and a preparation method thereof, wherein the surface of the ceramic tile is coated with a hydrophobic layer, and the self-cleaning ceramic tile is obtained by spraying a layer of modified glaze material after glazing in the production process of the ceramic tile, oxidizing and burning the glaze material, and spraying an organic silicon waterproof agent on the tile surface when the ceramic tile is taken out of a kiln. Therefore, the surface of the ceramic tile is not adhered with water and does not adsorb a gray layer, the gray layer on the surface of the tile is easily washed clean by rainwater in rainy days, and the effect of automatically cleaning and maintaining the decorative effect is achieved.)

1. A self-cleaning ceramic tile is characterized in that: the surface of the ceramic tile is coated with a hydrophobic layer, the hydrophobic layer is obtained by spraying a layer of modified glaze material after glazing in the production process of the ceramic tile, oxidizing and burning the glaze material, and spraying an organic silicon waterproof agent on the tile surface when the ceramic tile is taken out of a kiln.

2. A self-cleaning ceramic tile according to claim 1, wherein: the weight ratio of the modified glaze material is as follows: 12-25 parts of albite, 10-15 parts of potassium feldspar, 5-7 parts of kaolin, 5-10 parts of calcite, 0-2 parts of barium carbonate, 0-2 parts of zinc oxide, 20-30 parts of silicon micropowder, 10-20 parts of sodium salt, 6-20 parts of frit and 3-8 parts of pigment.

3. A self-cleaning ceramic tile according to claim 1, wherein: the convex peaks are designed with anti-skid patterns; the flat grooves have no patterns and are smooth surfaces.

4. The preparation method of the self-cleaning ceramic tile as claimed in claim 1, which comprises the steps of ball milling the used raw materials, spray drying, press forming, drying a blank body, glazing and decorating according to the weight ratio, and is characterized in that: the method comprises the following steps of glazing and decorating, then applying modified glaze, oxidizing and sintering, spraying an organic silicon waterproof agent on the tile surface when the tile is taken out of a kiln, wherein the ceramic tile comprises the following main chemical components: SiO 2₂ 68--72%，Al₂O₃ 12--16%，CaO 2--3%，MgO 2--3%，K₂O 2.5--3.5% Na₂O 1--2% Fe₂O₃1.5-2%, water absorption rate of 1.0-4.5% and breaking strength greater than 2000N.

5. The method for preparing a self-cleaning ceramic tile according to claim 4, wherein: the modified glaze comprises the following components in parts by weight: 12-25 parts of albite, 10-15 parts of potassium feldspar, 5-7 parts of kaolin, 5-10 parts of calcite, 0-2 parts of barium carbonate, 0-2 parts of zinc oxide, 20-30 parts of silicon micropowder, 10-20 parts of sodium salt, 6-20 parts of frit and 3-8 parts of pigment.

6. The method for preparing a self-cleaning ceramic tile according to claim 4, wherein: the organic silicon waterproof agent sprayed on the tile surface during kiln discharging specifically comprises the following steps: after the product is taken out of the kiln, at the temperature of 140 ℃ and 200 ℃, spraying organic silicon waterproof agent solution with the concentration of 3-5% on the tile surface, and naturally drying to form a waterproof layer.

7. The method for preparing a self-cleaning ceramic tile according to claim 4, wherein: the organic silicon waterproof agent is one or two of methyl potassium silicate, methyl sodium silicate, methyl siloxane and the like.

8. The method for preparing a self-cleaning ceramic tile according to claim 7, wherein: the organic silicon waterproof agent is a sodium methyl silicate waterproof agent.

Technical Field

The invention relates to a roof building material, in particular to a wave-shaped self-cleaning fired tile and a preparation method thereof.

Background

The ceramic tile has rectangular tile body, longitudinal notch in the front of the tile body, tile hanging stopper in the upper end of the notch, left and right sides of the tile body with left and right lapping edges, back claw lug in the lower end of the back of the tile body, and raised back rib in the back of the tile body.

The ceramic tile is used as a roof decoration material, and has the performances of preventing crosswind, preventing rain, preventing leakage, insulating heat, preserving heat, resisting permeability and the like besides the beautiful decoration. However, in the actual use process, because the ceramic tile is paved on the top of a house, and because a large amount of dust and the like exist in the air, after the ceramic tile is used for a long time, the water stain ash layer on the surface of the ceramic tile is difficult to clean, and the original gorgeous decorative effect is not achieved.

Disclosure of Invention

The invention aims to provide a novel self-cleaning ceramic tile and a preparation method thereof, which can keep clean as new effect after long-term use.

The technical scheme adopted by the invention is as follows: a self-cleaning ceramic tile is characterized in that: the surface of the ceramic tile is coated with a hydrophobic layer, the hydrophobic layer is obtained by spraying a layer of modified glaze material after glazing in the production process of the ceramic tile, oxidizing and burning the glaze material, and spraying an organic silicon waterproof agent on the tile surface when the ceramic tile is taken out of a kiln.

The proportion of the modified glaze adopted by the invention is as follows: 12-25 parts of albite, 10-15 parts of potassium feldspar, 5-7 parts of kaolin, 5-10 parts of calcite, 0-2 parts of barium carbonate, 0-2 parts of zinc oxide, 20-30 parts of silicon micropowder, 10-20 parts of sodium salt, 6-20 parts of frit and 3-8 parts of pigment.

After the modified glaze material is fired, a silicon-rich layer is formed on the glaze surface, so that the activity of the glaze surface is ensured, the modified glaze material can be well combined with an organic silicon waterproof agent in a short time, and under the condition of ensuring that the firing temperature of the glaze surface is proper, the more the amount of silicon micro powder is, the better the combination of the silicon-rich glaze layer and the organic silicon waterproof agent is. The silicon-rich layer improves the waterproof effect of the waterproof layer, prolongs the service life and keeps the new decorative effect for a long time; the surface of the self-cleaning ceramic tile is not adhered with water, and the ash layer on the surface is easily washed clean by rainwater, so that the self-cleaning effect is achieved. The flat groove of the tile is not designed with patterns, and is changed into a smooth surface, so that drainage and water outflow are facilitated. The convex peak of the tile is carved with patterns to prevent slipping.

The method for preparing the self-cleaning ceramic tile comprises the steps of ball milling the used raw materials, spray drying, press forming, drying a blank body, glazing and decorating according to the weight ratioThe method is characterized in that: the method comprises the following steps of glazing and decorating, then applying modified glaze, oxidizing and sintering, spraying an organic silicon waterproof agent on the tile surface when the tile is taken out of a kiln, wherein the ceramic tile comprises the following main chemical components: SiO 2₂ 68--72%，Al₂O₃ 12--16%，CaO 2--3%，MgO 2--3%，K₂O 2.5--3.5% Na₂O 1--2% Fe₂O₃1.5-2%, water absorption rate of 1.0-4.5% and breaking strength greater than 2000N.

The organic silicon waterproof agent sprayed on the tile surface during kiln discharging specifically comprises the following steps: after the product is taken out of the kiln, at the temperature of 140 ℃ and 200 ℃, spraying organic silicon waterproof agent solution with the concentration of 3-5% on the tile surface, and naturally drying to form a waterproof layer. The organic silicon is well combined with the glaze surface at the temperature, and a firm waterproof layer is formed in the subsequent drying process, so that the self-cleaning function is achieved.

The sodium salt can be one or two of sodium carbonate, sodium nitrate, sodium chloride, sodium silicate and the like. The organic silicon waterproof agent is one or two of methyl potassium silicate, methyl sodium silicate, methyl siloxane and the like, and preferably is a methyl sodium silicate waterproof agent.

The surface of the ceramic tile is coated with the hydrophobic layer, so that the surface of the ceramic tile is not adhered with water and does not adsorb an ash layer, the ash layer on the surface of the tile is easily washed clean by rainwater in rainy days, and the effect of automatically cleaning and maintaining the decorative effect is achieved.

Detailed Description

The invention is further illustrated below with reference to specific examples:

the self-cleaning ceramic tile is provided with two arc-shaped peaks and a flat groove, the upper end of the flat groove of a ceramic tile main body is provided with a step, the step is provided with a fixing hole penetrating through a supporting surface at the bottom of the step and a supporting strip, a corresponding connecting part at the bottom of the flat groove is provided with the supporting surface and the supporting strip, all the supporting surfaces and the supporting strips are on the same plane, the left side of a tile head of the ceramic tile main body is provided with a concave groove, the right side of the tile head is provided with a raised end which is matched and lapped with the peak at the left side, the bottom surface of the tile head of the ceramic tile main body is correspondingly provided with a abdicating groove matched with the step. The flat groove of the tile is not designed with patterns, and is changed into a smooth surface, so that drainage and water outflow are more convenient, and the convex peaks of the tile are engraved with patterns to prevent slipping. The surface of the ceramic tile is coated with a hydrophobic layer, and the hydrophobic layer is obtained by spraying a layer of modified glaze material after glazing in the production process of the ceramic tile, oxidizing and burning the glaze material, and spraying an organic silicon waterproof agent on the tile surface when the ceramic tile is taken out of a kiln.

The preparation method of the self-cleaning ceramic tile comprises the steps of ball milling raw materials, spray drying, press forming, drying a blank body, glazing and decorating according to the weight ratio of the used raw materials, applying modified glaze after glazing and decorating, oxidizing and sintering, and spraying an organic silicon waterproof agent on the tile surface when the tile is taken out of a kiln.