KR102148799B1 - Method of manufactuering for Radon Blocking Material - Google Patents

Abstract

In the present invention, the + electrode of the electrolysis tank is connected to a zinc rod of 2 cm in diameter and 20 cm in length, and the-electrode is connected to a brass rod of 2 cm in diameter and 20 cm in length, and the gap between the zinc rod of the + electrode and the brass rod of-electrode is located at 10 cm, and current After fixing with 5 volts and 15 amps, 1,000 g of vinyl acetate copolymer emulsion adhesive (PVAc Emulsion Adhesive) as a polysol, 1,000 g of polyvinyl alcohol (PVA) as a vinyl acetate water-soluble binder, 1 to 3 g of hydroquinone as an antioxidant and When the polysol-vinyl acetate binder composition mixed with 5 g of hydrochloric acid is put into the electrolysis tank of the electrolysis tank and electrolyzed, the zinc rod of the + electrode and the brass rod of the-electrode are completely dissolved and electrolyzed, and the zinc rod and the brass rod become nanoparticles. After preparing and preparing a nano-brass zinc polysol vinyl acetate resin composition in ion form, put 200 g of 400 mesh white coal and 150 g of 400 mesh graphite into 1,000 g of the nano brass zinc polysol vinyl acetate resin composition prepared above in a stirrer and at 60 RPM. It relates to a method for producing a radon blocking paint prepared by stirring for 1 hour.

Description

Method of manufacturing radon blocking material {Method of manufactuering for Radon Blocking Material}

The present invention relates to a method of manufacturing a radon blocking paint that blocks radon emitted from walls, ceilings, and floors of cement buildings in which we live.

Radon blockers are added to concrete to suppress the rate of release of radon, or an air purifier with high radon progeny removal efficiency is installed.

In Korean Patent Publication No. 1020080018291 (2008.02.28.), radioactive substances such as radon, unpleasant odors, and harmful substances such as formaldehyde and VOC emitted from construction materials cause headache, vomiting, atopy, and various allergic symptoms. Titanium dioxide, tourmaline, etc. are added as main components of white clay and silver nanowater, which can alleviate difficulties from sick house syndrome, and clay, a natural mineral that uses potassium silicate or lithium silicate and water-soluble acrylic as a binder. The composition of the used paint and its manufacturing method are described,

Domestic Patent Publication Registration No. 1018281650000 (2018.02.05.) It is composed of top, middle, and bottom layers, and is based on a synthetic resin that combines general urethane and epoxy resins with excellent shielding performance isocyanate silane and fluorine resin components, and nanopowder A coating waterproofing material for shielding radon, which inhibits or blocks radon generation by forming a high-density coating film containing a filler, is publicly available.

In Korean Patent Publication No. 1020120050052 (2012.05.18), nano-sized powders that emit negative ions such as montmonionite, photocatalyst, gelite, loess powder, anion powder or far-infrared powder, and ethylene-vinyl acetate A polymer resin that is a vinyl acetate copolymer of any one of copolymer, vinyl acetate-acric acid copolymer, and acricamide-vinyl acetate copolymer, toluene, xylene, methylene chloride, ethylene chloride, chloroform, methyl ethyl ketone or methyl isobutane ketone A polymer solution generation step of dissolving in a polar solvent such as a polymer solution to obtain a polymer solution; Anion-releasing polymer nanocomposite generation step in which the polymer solution obtained in the polymer solution generation step is dispersed to form a suspension, and then added dropwise to a basic solution stirred at 1000-3000 RPM to generate an anion-releasing polymer nanocomposite through a saponification reaction. ; An anion-releasing polymer nanocomposite powder generating step for obtaining an anion-releasing polymer nanocomposite powder by filtering, washing and drying the anion-releasing polymer nanocomposite formed in the anion-releasing polymer nanocomposite generation step; Anion-releasing polymer nanocomposite completion step of reinforcing heat resistance and dispersibility through crosslinking reaction of the anion-releasing polymer nanocomposite powder generated in the anion-releasing polymer nanocomposite powder generation step to complete the anion-releasing polymer nanocomposite; After adding liquid silicate and ion-exchanged water and stirring until a uniform liquid phase, methyltrimethoxysilane, methyltriethoxysilane, triethoxyvinylsilane, diphenyldimethoxysilane or triethoxysilane, etc. Add alkylalkoxysilane and stir for 10 minutes or more until it is completely hydrolyzed at 500RPM, and then increase the stirring speed to 2000RPM. Alumina (Al ₂ O _3, ), titanium oxide (TiO ₂ ), zirconium oxide (ZrO ₂ ), silica (SiO ₂ ) A liquid silicate inorganic binder forming step of forming a liquid silicate inorganic binder by adding and stirring a curing agent, which is a colloidal particle size of a metal oxide colloidal aqueous solution having a colloidal particle size of 40 to 180 nm into a colloidal dispersion such as (SiO ₂ ); 45 to 90% by weight of the anion-releasing polymer nanocomposite and 5 to 10% by weight of a pigment were added to 100% by weight of the liquid silicate inorganic binder obtained in the liquid silicate inorganic binder forming step, and then stirred and milled at 1000 RPM for 30 minutes or more, and then with a particle size meter. After checking 30 or less, after adjusting the speed to 300RPM, adding a liquid dispersant and an antifoaming agent and stirring for 10 minutes or more to make a paint; A commercialization step in which the viscosity is adjusted by adding ion-exchanged water to the mixture painted in the painting step; Anion-releasing polymer nanocomposite 22.5 to 45% by weight and pigment 2.5 to 5% by weight, dispersant 0.1 to 1.2% by weight, antifoaming agent 0.1 to 1.3% by weight, liquid silicate 24.5 to 37% by weight, ion exchange water 12 to 17% by weight, alkyl A technology related to an antimicrobial silicate-based inorganic aqueous paint using an anion-releasing polymer nanocomposite composed of 0.5 to 2.5% by weight of alkoxysilane, 2.5 to 7.5% by weight of a metal oxide colloidal aqueous solution, and 2.5 to 4.0% by weight of a curing agent is described,

In Korean Patent Publication No. 1020050048557 (2005.05.24), the present invention maximizes the material properties of Tourmaline and uses an eco-friendly paint that does not generate new environmental pollutants in order to use it as an environmental improvement material. It is used as a carrier of the chemical and as an additive for enhancing the function of functional natural minerals to have affinity with Tourmaline, so that it is not simply blocking and shielding environmentally harmful substances, but fundamentally suppresses the generation of environmental pollutants and these environmental pollutants It effectively removes chemicals and achieves the purpose of chemically and physically stable oxidation, decomposition, and transformation, and also helps the growth of living organisms and plants, thereby enhancing the health of humanity. Accordingly, the present invention achieves the purpose of pursuing, and expands the scope of use of Tourmaline by producing a paint containing tourmaline and applying and spraying it on a surface composed of cement, wood, fiber, paper, and other mixed materials. In order to be widely applied to materials and applications to be used for the construction surface,

1, tourmaline natural paint and its manufacturing method

2, tourmaline bio paint and its manufacturing method

3, Tourmaline functional paint and its manufacturing method

4, A composition constituting the present invention and a method for producing the same are disclosed, and in Korean Patent Publication No. 1010788660000 (2011.10.26.), galena, fly ash, silica, and magnesium oxide in powder form are mixed in a mixing container. Ingredient mixing step of adding and mixing; Through the raw material mixing step, the raw material mixture is brought into a solid state by mixing an additive into a raw material mixture consisting of powdered galena, fly ash, silica, and magnesium oxide in a mixing container, and applying heat at 40 to 50°C. It can be seen that a technology regarding a method for manufacturing a radiation shielding material comprising a step of mixing an additive to solidify is disclosed.

1. Korean Patent Publication No. 1020080018291 2. Domestic Patent Publication No. 1018281650000 3. Korean Patent Publication Publication No. 1020120050052 4. Korean Patent Publication Publication No. 1020050048557 5. Domestic Patent Publication No. 1010788660000

The prior art as described above is a problem of manufacturing cost and manpower consumption according to a complex manufacturing process of a radon shielding material capable of shielding radon, and a problem of risks that may occur during the manufacturing process, The problem of insignificant blocking effect against radon, which is most commonly exposed to the human body in a living environment, is a problem to be solved by the present invention.

In order to solve the above problems, the present invention connects the + electrode of the electrolysis tank to a zinc rod of 2 cm in diameter and 20 cm in length, and a brass rod of 2 cm in diameter and 20 cm in length, and the zinc rod of the + electrode and -pole of the After positioning the brass bars at a distance of 10 cm, and fixing the current at 5 volts and 15 amps, as a polysol, 1,000 g of vinyl acetate copolymer emulsion adhesive, 1,000 g of polyvinyl alcohol (PVA) as a vinyl acetate water-soluble binder, When the polysol-vinyl acetate binder composition, which is a mixture of 1 to 3 g of hydroquinone and 5 g of hydrochloric acid as an antioxidant, is added to the electrolyzer of the electrolysis tank and electrolyzed, the zinc rod of the + electrode and the brass rod of the-electrode are completely dissolved and electrolyzed. After preparing and preparing a nano brass zinc polysol vinyl acetate resin composition in ionic form, zinc rod and brass rod are made of nanoparticles,

The present invention provides a method for preparing a radon barrier coating prepared by placing 200 g of 400 mesh white coal and 150 g of 400 mesh graphite in a stirrer and stirring at 60 RPM for 1 hour in 1,000 g of the nano brass zinc polysol vinyl acetate resin composition prepared above. It is a means of solving problems.

The present invention provides an excellent blocking effect against radioactivity such as radon, which is most commonly exposed to the human body in a living environment due to the blocking effect of radon, and at the same time, it provides a high-strength radon blocking paint with excellent mechanical properties and can be effectively used for interior materials. There is an effect.

In the present invention, the + electrode of the electrolysis tank is connected to a zinc rod of 2 cm in diameter and 20 cm in length, and the-electrode is connected to a brass rod of 2 cm in diameter and 20 cm in length, and the gap between the zinc rod of the + electrode and the brass rod of-electrode is located at 10 cm, and current After fixing with 5 volts and 15 amps, 1,000 g of vinyl acetate copolymer emulsion adhesive (PVAc Emulsion Adhesive) as a polysol, 1,000 g of polyvinyl alcohol (PVA) as a vinyl acetate water-soluble binder, 1 to 3 g of hydroquinone as an antioxidant and When the polysol-vinyl acetate binder composition mixed with 5 g of hydrochloric acid is put into the electrolysis tank of the electrolysis tank and electrolyzed, the zinc rod of the + electrode and the brass rod of the-electrode are completely dissolved and electrolyzed, and the zinc rod and the brass rod become nanoparticles. After preparing and preparing a nano-brass zinc polysol vinyl acetate resin composition in ion form, put 200 g of 400 mesh white coal and 150 g of 400 mesh graphite into 1,000 g of the nano brass zinc polysol vinyl acetate resin composition prepared above in a stirrer and at 60 RPM. It relates to a method for producing a radon blocking paint prepared by stirring for 1 hour.

In the present invention, first, the + pole of a certain standard of different conductivity with excellent conductivity is selected as a zinc rod, and the-pole is a brass rod,

The + pole is 2cm in diameter and 20cm long, and the-pole is connected to a 2cm in diameter and 20cm long brass rod, and then the zinc rod of the + pole and the brass rod of the pole are 10cm apart, and the current is 5 volts, Electrolyze by fixing at 15 amps.

In the present invention, a polysol vinyl acetate binder composition is used as an electrolyte introduced into the electrolytic bath of the electrolysis bath,

It is used in a composition ratio of 1,000 g of polysol, 1,000 g of a vinyl acetate water-soluble binder, 1 to 3 g of hydroquinone and 100 g of hydrochloric acid as an antioxidant, and the above composition ratio is the most preferable state, and the physical properties of each component are as follows.

The polysol used in the present invention is one of the water-based adhesives, and is a vinyl acetate copolymer emulsion adhesive known by the general public as an adhesive for woodworking (PVAc Emulsion Adhesive). Unlike oil-based adhesives, since it is a water-based product, it takes more time to adhere than oil-based. In particular, it has excellent adhesion and penetrability, and excellent flow, water resistance, chemical resistance, and weather resistance, so it has excellent compatibility with urea resin.

Representative polysols are D-510 and D-502 of Daeheung Chemical Industry Co., Ltd., which are aqueous adhesives.

D-502(D-510)

1. Use

-Adhesion and overlay of paper, cloth, strip, wallpaper, wrapping paper, etc.

-Adhesion of toys, crafts and general household goods (adhesion of fresh panels for construction, special adhesion)

Performance

-When it is water-soluble, it can be diluted with water, so workability is good (adhesive strength is strong)

-Demonstrates adhesive properties for multi-purpose use (good water resistance, weather resistance, and chemical resistance)

-No fire hazard and no toxicity to human body, no wood contamination due to transparent dry film (no wood contamination due to transparent dry film)

Properties Content (D-502) Content (D-510) chief ingredient PVAc, etc. Vinyl acetate monomer Exterior Milky white emulsion viscous liquid Milky white emulsion viscous liquid Solid content 31±1% (KS-M-3700) 41±1% (KS-M-3700) Viscosity 20,000±2,000cps (at 25℃, RION VT-04 #2) 28,000~33,000cps (at 25℃, RION VT-04 #2) pH 4~5 (KS-M-3700) 4~5 (KS-M-3700) Ash 3% or less Film formation Transparent (KS-M-3700) Transparent (KS-M-3700) Wood contamination Good (KS-M-3700) Good (KS-M-3700) Urea resin miscibility Good State adhesion 100 kg/cm2 or more Waterproof adhesion 40 kg/cm2 or more importance 1.03±0.03 (at 20℃, KS-M-3705) 1.05±0.03 (at 20℃, KS-M-3705) stability Good mechanical stability, good storage stability Good mechanical stability, good storage stability Validity 6 months (storage at room temperature sealed) 6 months (storage at room temperature sealed)

[Source] Excerpt from PVAc Emulsion Adhesive from Naver site.

The vinyl acetate water-soluble binder used in the present invention is also called PVA. When polyvinyl acetate is hydrolyzed at 30 to 50°C by adding sodium hydroxide as a methyl alcohol solution, it becomes a white solid and precipitates. It is a white powder soluble in water and insoluble in organic solvents. It is used as an additive in zinc plating. It is used as a raw material for polyvinyl alcohol synthetic fibers, adhesives, greases, and films.

It is a water-soluble resin obtained by deacetic acid of a vinyl acetate resin, and is also called PVA. The aqueous solution is used as a base for water-based paints, as an adhesive for wood, and is a raw material for vinylon.

[Naver Encyclopedia of Knowledge] Excerpt from polyvinyl alcohol (Glossary on plating technology, June 2000, Book Publishing Node Media).

Hydroquinone used in the present invention is also called quinol, benzene-1,4-diol, p-dihydroxybenzene, and the name hydroquinone is quinone. It means the composition in which hydrogen is attached to. It is a structure in which two hydroxyl groups are attached to the para position of the benzene ring, and catechol and resorcinol are isomers that differ only in the position of the hydroxyl group. Formula C ₆ H ₄ (OH) ₂ . It is a colorless needle-shaped crystal with a molecular weight of 110.11, a melting point of 170.3℃, a boiling point of 287℃ (730mmHg), and a specific gravity of 1.33. It dissolves well in hot water, ethanol, and ether, but only 5.8g in 100mℓ is soluble in cold water.

It is reducible, and particularly alkaline aqueous solutions have distinct properties. It is prepared by oxidizing aniline to make quinone and then reducing it with nitrous acid. It has a variety of uses, mainly related to being dissolved in water and acting as a reducing agent. It is not only used as a photo developer and antioxidant, but is also important as a raw material for dye synthesis.

[Naver Encyclopedia of Knowledge] Hydroquinone (Doosan Encyclopedia)

The white coal used in the present invention is one of charcoal. Cover the kiln wall with stone and the ceiling with earth, carbonize the carbonaceous material at about 300℃, gradually widen the entrance of the kiln, dry it sufficiently at about 900~1,000℃, and then pull out the incandescent charcoal little by little. Charcoal covered with 消紛) and cooled. It is made very solid. In contrast, black charcoal is carbonized at about 700℃, sealing vents and chimneys, and 2 to 3 days later from the kiln. It is weaker than white coal and is also called briquette.

[Naver Encyclopedia of Knowledge] Baektan [白炭, hard charcoal] (Chemical Terminology, 2011. 1. 15., Iljinsa)

The graphite used in the present invention is composed of pure carbon (C) in its chemical composition, and has a homogeneity different from that of diamond only in its crystal structure. The English name for graphite is derived from the Greek word Graphein, which means'to write.'

The average hardness is about 1.5, very soft and soft, and the streak color is black. The specific gravity is 2.23, but it may be further reduced by voids or impurities in the structure. The color mainly has a metallic luster between black and gray, and is characterized by good electrical conduction due to its structural characteristics. In graphite, six carbons form a ring, and these rings form a plate-like structure, and electrical resistance varies according to the direction. It is a chemically very stable substance. The ignition point in air is 500°C or higher, and when heated in air, it combines with oxygen at 600°C or higher to become carbon dioxide (CO₂). According to the shape, it is divided into impression graphite and soil graphite.

A small amount of inorganic matter and organic matter may be generated in the sediment layer when it is not exposed to an oxidative environment and undergoes a catalytic denaturation or a wide-area denaturation effect by high-temperature magma. It can be mainly produced with rocks such as shale, sandstone, coal, and limestone, and is found together with rocks such as gneiss, schist, limestone, and serpentine in reducing environments. Representative output countries are known to be buried in Canada, the United States, China, Russia, Sri Lanka, Madagascar, North Korea, and Mexico, and in Korea, it is produced in Okcheon, Mungyeong, Sangju, Boeun, Gaecheon, Ganggye, Chosan, and Changseon. Our country produces 5 tons a year, accounting for about 10% of the world's total production of 50-60 tons.

Graphite is most commonly used as a material for pencils and sharp cores, and it is also used as a raw material for good electric conductors using electrical conductivity. It is also used as a material for heat-resistant equipment (crucibles) in chemical processes. In addition, since the crystal structure is layered and smooth, it is also used as an anti-friction agent and lubricant, and is used as a mold when making products.

[Naver Encyclopedia of Knowledge] Excerpt of Graphite [Graphite] (Doosan Encyclopedia)

Hereinafter, the present invention will be described in detail through examples.

Example

1st process

The + pole of the electrolysis tank is connected to a zinc rod of 2cm in diameter and 20cm in length, and the-pole is connected to a brass rod of 2cm in diameter and 20cm in length, the zinc rod of the + electrode and the brass rod of the -pole are located at 10cm intervals, and the current is 5 Bolt, fix it with 15 amps,

1,000 g of polysol, 1,000 g of vinyl acetate water-soluble binder, and polysol vinyl acetate binder composition in which 1 g of hydroquinone and 5 g of hydrochloric acid are mixed as an antioxidant are added to the electrolyzer of the electrolysis tank, and when electrolyzed, the zinc rod of the + pole and- When the brass rod of the pole is completely dissolved and electrolyzed, the zinc rod and the brass rod are made of nanoparticles, and a nano brass zinc polysol vinyl acetate resin composition in ionic form is prepared and prepared.

2nd process

To 1,000 g of the nano-brass zinc polysol vinyl acetate resin composition prepared in the first step, 200 g of 400 mesh white coal and 150 g of 400 mesh graphite were placed in a stirrer and stirred at 60 RPM for 1 hour to prepare a radon barrier coating.

3rd process

The radon-blocking paint was applied to a cement wall, floor, or ceiling with a thickness of 0.3 mm to block radon.

If necessary, not only the first application of the radon blocking paint of the embodiment, but also the second or third application by repeating two times may effectively block radon.

Experimental example (radon measurement)

Experimental device name: RadonEye

Radon Eye:

Measurement method: Pulse type ionization chamber 200cc

Valid data output time required: <60 minutes

Measurement value display: every 10 minutes (60 minutes moving average)

Measurement sensitivity: 0.5cpu/pCi/l at 10pCi/l (30cph/pEi/l)

Permissible operating environment: 10~40℃, RH <90%

Measurement range: 0.1~99.99 pCi/l (environmental standard 4pCi/l)

(This is a smart indoor radon gas detector, with a pulse-type ionization chamber and a precision measurement circuit applied, so it is more than 20 times more sensitive than conventional radon detectors, fast and precise.)

After preparing two cement bricks (20cm wide, 9cm long, 5cm high),

One of them is the radon barrier coating prepared in the second process of Example 1.

After applying it to a thickness of 0.3mm as in the third process, prepare by drying for a certain period of time,

Put another cement brick without radon blocking paint applied, put it in a dryer and dry it with hot air at 60℃ for 3 hours to prepare,

After placing the above two cement bricks in two sealed plastic containers of a cube 30 cm in width, 30 cm in length, and 30 cm in height,

The radon eye (name of the radon measuring device) was placed in the center of the brick and sealed, and the radon radiation level was measured.

The radon emissivity was measured by measuring the amount of radioactivity every 10 minutes with a radon eye radioactivity detector, and calculating the average of the radioactivity for 1 hour. The results are as follows.

Cement brick (radon blocking paint is not applied) Brick coated with the radon barrier coating of Example 1 Remark Radon radiation
(pCi/㎡ h) 8.59 0.71 over 90
decrease

As shown in Table 2 of the experiment results, the radon radioactivity of the cement brick coated with the radon blocking paint prepared in Example 1 was generally higher than that of the conventional cement brick.

It has been proven that there is a blocking effect of more than 90%.

Claims (1)

In the method for producing a radon blocking paint,
The + electrode of the electrolysis tank is connected to a zinc rod of 2cm in diameter and 20cm in length, and the -pole is connected to a brass rod of 2cm in diameter and 20cm in length, and the gap between the zinc rod of the + electrode and the brass rod of -pole is located at 10cm, and the current is 5 volts. , Fixed at 15 amps,
Polysol vinyl acetate binder composition that contains 1,000 g of vinyl acetate copolymer emulsion adhesive as a polysol, 1,000 g of polyvinyl alcohol (PVA) as a vinyl acetate water-soluble binder, and 1 to 3 g of hydroquinone and 5 g of hydrochloric acid as an antioxidant In the electrolysis tank of the electrolysis tank and electrolysis, the zinc rod of the + electrode and the brass rod of the-electrode are completely dissolved and electrolyzed. The zinc rod and the brass rod become nanoparticles and become ionic nano-brass zinc polysol vinyl acetate. After preparing and preparing a resin composition,
A method for producing a radon-blocking coating, characterized in that it is prepared by placing 200 g of 400 mesh white coal and 150 g of 400 mesh graphite into 1,000 g of the nano-brass zinc polysol vinyl acetate resin composition prepared above in a stirrer and stirring at 60 RPM for 1 hour.