KR101247162B1 - Method of menufacturing nano-oxygen catalyst with carbon nanotubes for removing sick house syndrome - Google Patents

Abstract

PURPOSE: A manufacturing method of a nano-oxygen catalyst for removing a sick house syndrome containing antistatic carbon nanotubes is provided to easily and surely remove volatile organic compounds such as formaldehyde, toluene, xylene, and benzene by simply coating on an interior finishing material surface, to be semi-permanently used without the degradation of effects by applying the catalyst which does not directly react with the volatile organic compounds or other contaminants, and to remove static electricity on a real time basis. CONSTITUTION: A manufacturing method of a nano-oxygen catalyst for removing a sick house syndrome comprises the following steps: a step of filling titanium tetrachloride and refined water at a ratio of 1:100 in a stainless tank at room temperature, and first-stirring after adding 0.20-0.39 mol of ammonia solution; a step of extracting a pure titanium dioxide solution, which is a separated lower layer solute, and charging in a stainless tank; a step of stirring after adding 0.23-0.35 mol of nitric acid, and second-stirring for 20-50 minutes after additionally adding 0.12-0.25 mol of silica sol; and a step of third-stirring after adding 0.013-0.03 mol of acryl binder, microcapsules filled with carbon nanotubes, a minor portion of dispersant, and a minor portion of EDTA together. The content of the microcapsules filled with carbon nanotubes is 0.05-0.1 parts by weight for 100 parts by weight of nano-oxygen catalyst for removing the sick house syndrome. The carbon nanotubes have 5-20 nm diameter, 5-10 micrometer length, and more than 90wt% purity. The microcapsules are made of low density PE.

Description

Method of manufacturing nano-oxygen catalyst for removing sick house syndrome containing anti-static CN {Method of menufacturing nano-oxygen catalyst with carbon nanotubes for removing sick house syndrome}

The present invention relates to a method for preparing a nano-oxygen catalyst for removing sick house syndrome containing an antistatic CNT.

Sick house syndrome is a generic term for the inconvenience caused by carcinogens such as volatile benzene, toluene, chloroform, acetone, styrene, formaldehyde, etc. that come from building materials and wallpaper used to build new houses and buildings. It may also contain contaminants such as radon, asbestos, carbon monoxide, carbon dioxide, nitrogen oxides, ozone, fine dust, and airborne bacteria.

In particular, formaldehyde is a colorless gas with a strong irritant odor at room temperature and is a representative material of sick house syndrome.

Korean Patent Registration No. 808094 (registered on Feb. 21, 2008, entitled "Deodorizing and Antimicrobial Composition for Removing Formaldehyde and Volatile Organic Compound Causing Sick House Syndrome") proposed to eliminate this sick house syndrome In order to remove formaldehyde and volatile organic compounds which cause sick house syndrome improvement, 20 to 60% by weight of one microorganism selected from the group consisting of: i) photosynthetic bacteria, super bugs, antioxidant yeasts and combinations thereof; Ii) 15 to 35% by weight of one plant essential oil selected from the group consisting of phytoncide sap, terpenes, polyphenols, alkaloids, glycosides and combinations thereof; Iii) 10 to 20% by weight of hydroxy acid; Iv) 1 to 10% by weight of silver nitrate; V) 5 to 20% by weight of one natural protein selected from the group consisting of soy protein, dog protein, collagen and combinations thereof; And vi) 5 to 20% by weight of a titanium phosphate compound.

However, such prior art compositions have disadvantages in that the initial effect can not be sustained for a long time and the tackiness is low.

An object of the present invention created to solve the above problems, a new house containing an eco-friendly non-toxic anti-static CNT that can realize the life of well-being by removing formaldehyde and volatile organic compounds that are the main cause of sick house syndrome and atopy The present invention provides a method for mass-producing a nano-oxygen catalyst for removing the syndrome.

The object of the present invention, (1) filling the tank with a titanium tetrachloride and purified water in a stainless steel tank in a ratio of 1: 100 at room temperature, and then adding 0.20 to 0.39 mol of ammonia water, followed by primary stirring; (2) extracting a pure titanium dioxide solution, which is a separated lower layer solvent, and filling it into a stainless steel tank; (3) adding 0.23 to 0.35 mol of nitric acid, stirring the mixture, further adding 0.12 to 0.25 mol of silica sol, and stirring the mixture for 20 to 50 minutes; (4) 0.013 to 0.03 mol of acrylic binder and carbon nanotube-filled microcapsules, and a small amount of dispersant and a small amount of EDTA are added together, followed by tertiary stirring, wherein the nano-nanotube-filled microcapsules Silver is 0.05 to 0.1 parts by weight with respect to 100 parts by weight of the nano-oxygen catalyst for removing the bird house syndrome, the carbon nanotubes have a purity of 90wt% or more having a diameter of 5 to 20nm and a length of 5 to 10um, the material of the microcapsules Characterized by low density PE can be achieved by a method for producing a nano-oxygen catalyst for removing the sick house syndrome containing the antistatic CNT.

In more detail, the step (5) of filling and storing the nano-oxygen catalyst prepared according to the present invention in a tank made of PVC, wherein the step (2) Removing completely the upper layer solvent, and then extracting pure titanium dioxide as a lower layer solvent.

Specifically, the primary stirring of the present invention is carried out by stirring the stirrer at 50 to 80 rpm while stirring the stirring process for 30 to 50 minutes two to five times, and the secondary stirring is performed by operating the stirrer at 3,000 rpm Stirring the mixture for 30 to 50 minutes is repeated 2 to 5 times, and the tertiary stirring is performed by stirring the mixture at 3,000 rpm for 5 to 10 minutes.

The present invention as described above can easily and reliably remove volatile organic compounds (VOC) such as formaldehyde, toluene, xylene and benzene, which are representative materials of sick house syndrome, on the surface of the interior finish material through simple application, As stated in the test report, it can be confirmed that formaldehyde with a concentration of 48 μmol / mol can be deodorized up to 89.6% within 120 minutes.

In addition, the present invention is a catalyst type that does not directly react with volatile organic compounds or other pollutants, and can be used semi-permanently without deteriorating the efficacy, and is capable of removing static electricity in real time.

Hereinafter, with reference to the embodiment of the present invention will be described.

1. Manufacturing method of nano oxygen catalyst for sick house syndrome removal

In a 1 ton stainless steel tank having a triple structure, raw material titanium tetrachloride (TiCl ₄ ) and purified water are charged to the tank at a ratio of 1: 100 at room temperature.

Then, the tank is filled with 0.20 to 0.39 mol of ammonia water as a sub-material.

Subsequently, the low-speed stirrer is operated at 50 to 80 rpm, and the mixed titanium tetrachloride, ammonia water and purified water are first stirred for 30 to 50 minutes, and this stirring process is repeated 2 to 5 times. Here, the reaction temperature of titanium tetrachloride, ammonia water, and purified water mixed at the time of stirring should be maintained at a room temperature of at least 0 캜.

When stirring is completed, the solvent in the tank is separated into an upper layer and a lower layer.

Finally, the upper layer solvent is removed and only pure titanium dioxide (TiO ₂ ), which is a lower layer solvent, is extracted.

The extracted pure titanium dioxide is charged into a one-ton capacity stainless steel tank having a triple structure and 0.23 to 0.35 mol of nitric acid (HNO ₃ ) is injected into the tank.

Then, the stirrer is rotated at 3,000 rpm for 30 to 50 minutes, and this stirring process is repeated 2 to 5 times.

Then, silica sol (SiO ₂ SOL) 0.12 to 0.25 mol.

Thereafter, the stirrer is rotated at 3,000 rpm and stirred for 20 to 50 minutes to produce a titanium dioxide nano-oxygen catalyst. At this time, the reaction temperature should be maintained at room temperature of at least 0 ° C.

Here, when the amount of nitric acid is less than 0.23 mol or more than 0.35 mol, and when the amount of silica sol is less than 0.12 mol or more than 0.25 mol, the deodorization rate of formaldehyde is less than 80% .

As a result, it is preferable that the molar concentration of nitric acid and the silica sol is as exemplified in this embodiment.

After injecting 0.013 to 0.03 mol of an acrylic binder into the produced titanium dioxide nano oxygen catalyst, and adding a microcapsule filled with carbon nanotubes (Carbon Nanotubes, CNT), the stirrer was rotated at 3,000 rpm and stirred for 5 to 10 minutes.

Here, the carbon nanotubes applied to the present invention have the following specifications.

Purity: 90wt% or more, diameter: 5-20nm and length: 5-10um

The material of the microcapsule is low density PE.

When handling and adding microcapsules filled with carbon nanotubes, pay attention to the following points.

1. Handling Precautions

The container filled with microcapsules should have a closed structure, and a moisture absorbent should be added to prevent moisture from being absorbed into the microcapsules.

2. Precautions when adding

A predetermined amount of the microcapsules to be added is taken out of the container and dried in a chamber having a closed structure of 50 to 80 캜 for 5 to 7 hours with stirring, and then charged into a separate sealed container.

After that, a worker wearing a mask and gloves of pure PE material should open and close the sealed container filled with dried microcapsules and add to the tank.

Here, the microcapsules filled with carbon nanotubes should be added 0.05 to 0.1 parts by weight based on 100 parts by weight of the final composition. If the amount of the microcapsule is less than 0.05 part by weight, the effect is insufficient or insufficient. If the amount is more than 0.1 part by weight, the unit cost increases sharply.

Finally, a small amount of dispersant and a small amount of EDTA (colloidal phosphorus) were injected together into a microcapsule filled with a titanium dioxide nano oxygen catalyst and a carbon nanotube and an acrylic binder to prepare a titanium dioxide nano oxygen catalyst solution having a pH of 7 neutral. Create

Finally, the titanium dioxide nano-oxygen catalyst solution of the present invention is stored in a PVC material tank and subsequently packaged in the form of 200 ml, 500 ml, 1000 ml, 4 L, 10 L, 20 L and drum for dispatch.

Here, the nano-oxygen catalyst according to the present invention should be stored in a well-ventilated shade.

As described above, the nano oxygen catalyst for removing sick syndrome of the present invention is a liquid type material produced by a nano-fusion material having a new characteristic through various stages of nano-fabrication process, and is applied to an indoor finish material, Friendly nanocomposite that can be removed quickly without the emission of pollutants.

2. Characteristics of nano-oxygen catalyst

First, the nano-oxygen catalyst is a liquid-phase nano-fusion advanced material having strong deodorizing function through various stages of nano-processing from titanium tetrachloride as a raw material of titanium dioxide.

The nano-oxygen catalyst of the present invention is an environmentally-friendly nano-composition that is directly applied to indoor finishes and rapidly removes various causative substances of sick house syndrome without discharging secondary pollutants ( see test report ).

In addition, the nano-oxygen catalyst of the present invention is a semi-permanent catalyst.

The composition of the present invention is stable, neutral, liquid type, chemically stable, and has high physical properties because it has new properties of harmless to human body as well as anatase type crystal structure.

3. Main features of nano-oxygen catalyst

- Removal of volatile organic compounds

- Antibacterial (sterilization) action: elimination of harmful bacteria such as pathogenic Escherichia coli, influenza virus, bacteria

- Removing odor: Removing odor such as nicotine, mold, ammonia odor in toilet

- Air purification: decompose and purify air pollutants such as nitrogen oxides or sulfur oxides.

- Pollution prevention: Preventing contamination of objects to be coated by forming ultra-hydrophilic coating film

4. Characteristics of microcapsules filled with carbon nanotubes

- Prevention of film damage

The nano-oxygen catalyst according to the present invention is applied to the room and furniture to form a coating film, and the coating film is prevented from being damaged by natural or external force.

- Antistatic Protection

Since carbon nanotubes have the same electrical conductivity as copper and have the same properties as diamonds having the highest thermal conductivity in nature, they can effectively remove static electricity, which can be charged in the coating film of the nano-oxygen catalyst, in a small amount.

5. Performance Indicators of Nano-Oxygen Catalysts

The performance indicators for each item of the present invention have the performance indicators as shown in Table 1 below.

6. Formaldehyde deodorization test

In order to test the deodorization ability of formaldehyde of the nano-oxygen catalyst (name: eco-zero) of the present invention, a test was commissioned by Korea Institute of Construction & Living Environment Test on Jan. 6, 2012 (without copper).

As a result of the test, it can be seen that formaldehyde having a concentration of 48 μmol / mol can be deodorized up to 89.6% within 120 minutes as shown in Table 2.

Therefore, it has been found that the composition of the present invention has a very strong deodorizing ability to formaldehyde, which is a representative material of sick house syndrome.

The present invention as described above has been described with reference to one embodiment, but not limited to this, all embodiments modified based on the technical idea of the present invention are obviously belong to the scope of the present invention.

Claims (3)

(1) filling the tank with titanium tetrachloride and purified water in a stainless steel tank at a ratio of 1: 100 at room temperature, followed by first stirring by adding 0.20 to 0.39 mol of ammonia water;
(2) extracting a pure titanium dioxide solution, which is a separated lower layer solvent, and filling it into a stainless steel tank;
(3) adding 0.23 to 0.35 mol of nitric acid, stirring the mixture, further adding 0.12 to 0.25 mol of silica sol, and stirring the mixture for 20 to 50 minutes;
(4) adding a microcapsule filled with 0.013 to 0.03 mol of acrylic binder and a carbon nanotube, a small amount of dispersant, and a small amount of EDTA together, followed by tertiary stirring;
The microcapsule filled with the tanano nanotubes is 0.05 to 0.1 parts by weight based on 100 parts by weight of the nano oxygen catalyst for removing sick house syndrome,
The carbon nanotube has a purity of 90wt% or more having a diameter of 5 to 20nm and a length of 5 to 10um,
The material of the microcapsules is a method for producing a nano-oxygen catalyst for removing the sick house syndrome containing antistatic CNT, characterized in that the low density PE.
The method of claim 1,
(5) filling and storing the prepared nano-oxygen catalyst in a tank made of PVC,
The step (2)
Removing the separated upper layer solvent in the tank when the stirring is completed,
Method of producing a nano-oxygen catalyst for removing a sick house syndrome containing an antistatic CNT, characterized in that the step of completely removing the upper solvent and extracting the pure titanium dioxide that is the lower layer solvent.
The method of claim 1,
The primary agitation is carried out by stirring the agitator at 50 to 80 rpm and repeating the stirring process for 2 to 5 times for 30 to 50 minutes,
The secondary agitation was carried out by stirring the agitator at 3,000 rpm and repeating the agitation process for 30 to 50 minutes 2 to 5 times,
The third stirring is a method for producing a nano-oxygen catalyst for removing the sick house syndrome containing the antistatic CNT, characterized in that the stirring for 5 to 10 minutes by operating the stirrer at 3,000rpm.