A manufacturing method of ceramic board coated TiO2 of air clarifier

TECHNICAL FIELD [0002] A manufacturing method of ceramic board coated TiO2 of air clarifier

1 is a process diagram showing a method of manufacturing a ceramic substrate of an air purifier coated with a titanium dioxide film.

<background-art><p>The present invention relates to a titanium dioxide photocatalytic reaction substrate for an air purifier, and more particularly, by using a ceramic substrate to which a magnetic material is added, contamination on the substrate surface that may occur due to an electrostatic reaction is minimized and titanium dioxide is applied to a chemically stable ceramic substrate. It relates to a method of manufacturing a ceramic substrate for an air purifier coated with a titanium dioxide film, which can maximize the processing efficiency of the air purifier by forming a film by coating the sol.</p><p>In general, air purifiers use titanium dioxide photocatalysts to purify air and remove pollutants.</p><p>The photocatalyst, titanium dioxide, creates negatively charged electrons and positively charged holes when exposed to light, and the electrons and holes have very strong reducing and oxidizing power, so that hydroxyl groups that are active oxygen from water and oxygen in the atmosphere (OH) and peroxygen ion (O-) are generated, and the generated hydroxyl group and peroxygen ion have strong oxidizing and reducing power, so they act on sterilization and decomposition of organic matter.</p><p>In general, the titanium dioxide photocatalyst reaction plate of the air purifier is fixed to the surface of aluminum, paper, or equivalent using an adhesive, so the role of the photocatalyst is hindered. This occurred, and the electrostatic contaminants were bonded to the surface of the substrate, so that the reaction plate did not perform its functions, and it was easily damaged and the manufacturing cost of the substrate increased, which caused uneconomical problems.</p></background-art><tech><p>The present invention has been devised to solve the above problems, and an object of the present invention is to prevent desorption of titanium dioxide due to damage and long-term use by adding a magnetic material to high-strength ceramics and coating titanium dioxide, and pollutants An object of the present invention is to provide a method for manufacturing a ceramic substrate for an air purifier coated with a titanium dioxide film, which can maximize the efficiency of the photocatalyst by preventing the bonding to the surface and allowing the photocatalyst to be smoothly formed.</p><p>The composition of the present invention to achieve the above object is AlO (24 ~ 50W/%), SiO(35 ~ 40W/%), Mg0 (8 ~ 10W/%), FeO (12 ~ 15W/%), MnO( 11 to 12W/%), CuO (3 to 5W/%), etc. are wet-mixed, molded and dried, and then predetermined to prepare a ceramic substrate. It is characterized in that it comprises a titanium dioxide sol manufacturing process to manufacture, and a coating process in which the substrate manufactured by the substrate manufacturing process is supported in the titanium dioxide sol, dried and heat-treated.</p><p>More preferably, the substrate manufacturing process is AlO (24 to 50W/%), SiO (35 to 40W/%), Mg0 (8 to 10W/%), FeO (12 to 15W/%), MnO (11 to 12W/%), CuO (3 ~ 5W/%), etc. are wet-mixed, and then a dispersant, plasticizer, organic binder, solvent, etc. are added to have an average particle diameter of 1 to 3 micrometers and pulverize to have a viscosity of 4000CPS. The slurry manufacturing process for preparing the slurry, the green sheet manufacturing process for manufacturing the green sheet by molding and drying the slurry prepared by the slurry manufacturing process to a thickness of 2 to 3 mm, and the green sheet manufacturing process It is characterized in that it consists of a predetermined process of manufacturing a porous ceramic substrate by firing a green sheet at 1300 ~ 1400.</p></tech>

<p>Hereinafter, an embodiment of the present invention will be described with reference to a process diagram showing a method of manufacturing a ceramic substrate of an air purifier coated with a titanium dioxide film of FIG. 1 .</p><p><u>Manufacturing method of ceramic substrate coated with titanium dioxide film</u></p><p><b>1st process (substrate manufacturing process)</b></p><p>The substrate manufacturing process is subdivided into slurry manufacturing process, green sheet manufacturing process, and predetermined process.</p><p>The slurry manufacturing process is AlO (24 50W/%), SiO (35 40W/%), Mg0 (8 10W/%), FeO (12 15W/%), MnO (11 12W/%), After wet mixing CuO (3 ~ 5W/%), etc., 1.5% of a general organic dispersant (Sannovco SN5468) is added and milling is performed for about 20 hours.</p><p>Then, it is prepared into granules using a spray dryer, calcined at about 1150° C., and then pulverized using a vibrating grinder.</p><p>The powder pulverized by the above process is mixed with organic binder (PVB) (3 to 7%), plasticizer (DBP) (2 to 4%), dispersant (FISH OIL) (1 to 3%), solvent (ethanol and toluene) (35 ~ 45%) is added, and the average particle diameter is 1-3 micrometers and the slurry is pulverized to have a viscosity of 4000CPS.</p><p>In the green sheet manufacturing process, the slurry prepared by the slurry manufacturing process is molded to a thickness of 2 to 3 mm on a film coated with a release agent on a blade that can be adjusted in height, and then dried in a dry oven at 40 to 60°C for 24 hours. to manufacture a green sheet.</p><p>In the predetermined process, the green sheet manufactured by the green sheet manufacturing process is predetermined at a rate of 2 to 3 °C/min to 1300 to 1400 °C to manufacture a porous ceramic substrate.</p><p><b>2nd process (titanium dioxide sol manufacturing process)</b></p><p>Titanium dioxide sol (TiOsol) is prepared by co-precipitating a solution of Titanium Tetraisopropoxide with hydrochloric acid in absolute ethanol.</p><p>That is, it is prepared under strong stirring by reacting a titanium tetraisopropoxide solution with 1000 g of absolute ethanol to a concentration of 2M and immersing it drop by drop to a concentration of 0.2M using 2N HCL. A stable sol is produced when reacted for about 12 hours do.</p><p><b>3rd process (coating process)</b></p><p>After loading the substrate in the titanium dioxide sol prepared by the second process, drying, repeating the coating operation 2-3 times, and heat-treating at 550° C. to prepare a ceramic substrate coated with a titanium dioxide film.</p>

<p>As described above, the ceramic substrate coated with titanium dioxide produced by the present invention is not easily damaged and has a low degree of contamination on the surface of the substrate. It maximizes the photocatalytic function by preventing the desorption phenomenon and has the effect of long-term use.</p>