KR20110096777A - White paint composition for radon reduction - Google Patents

White paint composition for radon reduction Download PDF

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Publication number
KR20110096777A
KR20110096777A KR1020100016213A KR20100016213A KR20110096777A KR 20110096777 A KR20110096777 A KR 20110096777A KR 1020100016213 A KR1020100016213 A KR 1020100016213A KR 20100016213 A KR20100016213 A KR 20100016213A KR 20110096777 A KR20110096777 A KR 20110096777A
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KR
South Korea
Prior art keywords
radon
weight
reducing
white
silicate
Prior art date
Application number
KR1020100016213A
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Korean (ko)
Inventor
이병기
주현민
Original Assignee
주식회사 코켐스
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Priority to KR1020100016213A priority Critical patent/KR20110096777A/en
Publication of KR20110096777A publication Critical patent/KR20110096777A/en

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/32—Phosphorus-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L5/00—Compositions of polysaccharides or of their derivatives not provided for in groups C08L1/00 or C08L3/00
    • C08L5/04—Alginic acid; Derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
    • C09D1/02—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances alkali metal silicates
    • C09D1/04—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances alkali metal silicates with organic additives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/65—Additives macromolecular
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/32—Phosphorus-containing compounds
    • C08K2003/321—Phosphates

Abstract

The present invention is a white coating composition for reducing the concentration of radon generated in indoor buildings such as concrete, ocher and gypsum board, and additionally to a white coating composition for reducing radon having a function of adsorbing harmful gases causing odors. It is about.
Characteristic of the present invention is to use X-type zeolite characterized by pore size of about 10Å, use silicate aqueous solution which does not reduce the adsorption characteristics of zeolite as binder, white pigment, filler, anion emitting mineral, silicone The present invention relates to a white coating composition for reducing radon concentration by at least 45% by reducing the concentration of radon by mixing an emulsion, sodium silicate, and viscosity modifier, and having excellent indoor air purifying function and excellent radon resistance. .

Description

White Paint Composition for Radon Reduction

The present invention is a white coating composition for reducing the concentration of radon generated in indoor buildings such as concrete, ocher and gypsum board, and additionally to a white coating composition for reducing radon having a function of adsorbing harmful gases causing odors. It is about.

Radon is defined as the main cause of lung cancer after smoking by the World Health Organization (WHO), and the International Cancer Research Center (IARC) defines radon as a primary carcinogen with asbestos in terms of health risks. Six to 15 percent of lung cancer patients are attributed to radon.

Radon, a first-class carcinogen, has been investigated to occur in building materials such as gypsum board, concrete, and loess used indoors, and a method for suppressing the occurrence of radon has been studied.

For example, Korean Patent No. 10-454753 discloses a method of suppressing the release of radon by adding a radon blocker to concrete during building construction. In this method, the reduction rate of radon is 40% or less, which is low.

Meanwhile, Patent Publication No. 10-2009-0047983 discloses a method of using paint for preventing the release of radon. In this method, the reduction efficiency of radon is very high (70% or more) using epoxy or the like as a paint binder, but it has a disadvantage in that economic efficiency and workability are not good because it needs to be applied three times or more to make the film thickness 1 mm or more. . In addition, there is a problem in that toxic gas is generated as the organic material used as the binder is decomposed in case of fire.

On the other hand, a method for improving indoor air quality by adsorbing and decomposing volatile organic compounds and formaldehyde, which causes sick house and swollen syndrome with reducing radon, is disclosed in Patent Application No. 10-2006-0078333. In this method, a silicate inorganic liquid binder is used as a binder, and natural jade powder, elvan stone powder, histoionic anionic agent, zeolite, titanium dioxide, and liquid silver nano are used. The effect of this method is to decompose volatile organic compounds and formaldehyde mainly by anion and far-infrared-generating minerals and titanium dioxide having a photocatalytic function to improve indoor air quality and greatly reduce radon concentration. However, the material used is expensive, and since the amount of zeolite used is 1 to 5% by weight, the zeolite adsorption effect is difficult to expect.

As a result, the present inventors strive to solve the problems of the prior art. As a result, the zeolite has a different adsorption effect depending on the form, and in the present invention, in order to improve the adsorption functionality of the zeolite, the X-type zeolite having a relatively large pore size is improved. The present invention has been completed using a white coating composition for reducing radon to reduce harmful gases causing odors, including radon.

The present invention relates to a white coating composition for reducing the concentration of radon generated in an indoor building, and additionally, to a white coating composition for reducing radon having a function of adsorbing harmful gases causing odors. Use a specialized X-type zeolite, use an aqueous silicate solution that does not reduce the adsorption properties of the zeolite as a binder, and use other additives such as white pigments, fillers, anion-emitting minerals, silicone emulsions, sodium silicate and viscosity modifiers. By using the mixture to complete the composition, to reduce the concentration of radon 45% or more, to provide a white paint composition for reducing radon with excellent indoor air purification function, water resistance and flame retardancy.

According to a feature of the present invention for solving the above problems, it is difficult to expect the adsorption effect of toxic gases that cause odors, including radon because zeolite is generally used A-type Pore size is small. Therefore, in the present invention, 5 to 30% by weight of zeolite characterized by an average pore size of 10Å by X-type was used, and 20 to 60% by weight of a silicate aqueous solution having a solid content of 40 ± 2% by weight as a curing reaction accelerator of silicate. 1 to 5 wt% sodium silica fluoride, 10 to 20 wt% titanium dioxide and zinc oxide as white pigment, 0.5 to 5 wt% monazite with anion release properties, 0.5 to 5 wt% silicone emulsion and other viscosity modifiers It is characterized by consisting of 0.1 to 3% by weight sodium alginate.

The powder including zeolite added in the present invention was used by pulverizing to 325 mesh or less so that it was finally easy to apply using a brush and a roller.

Radon reducing white paint composition of the present invention according to the above problem solving means to reduce the radon in the indoor environment, as a white paint adsorbing volatile organic compounds and formaldehyde, including multi-use facilities, apartments, hospitals, schools and kindergartens The indoor air purification function will contribute to the improvement of public health and living environment.

The radon reducing white coating composition according to the present invention exhibits a radon reduction ratio of about 45% or more by two coatings, and thus improves water resistance, thereby forming a durable coating film even in humid conditions.

In detail describing the present invention for achieving the above object, it is preferable to add 5 to 30% by weight of the porous adsorbent material X-type zeolite to exhibit the adsorption characteristics of harmful gases causing radon reduction, odor. When the zeolite content of the X-type is 5% by weight or less, the radon reduction and adsorption characteristics are too low, and when 30% by weight or more, the adhesion by the silicate aqueous solution adhesive is not uniform and the coating film is poor. More preferably, 10 to 20% by weight is preferable.

The silicate aqueous solution can be used either individually or in combination with an aqueous solution of potassium silicate and sodium silicate having a solid content of 40 ± 2% by weight, and the molar ratio of K 2 O and Na 2 O to SiO 2 is 1: In the range of 2.8 to 3.4, the amount of use is preferably 20 to 60% by weight. If the concentration of silicate is 20% by weight or less, the coating film is poor. If 60% by weight or more, the curing rate is too slow, and the film formation rate is slowed. More preferably 35 to 50% by weight is preferred.

The white pigment is preferably used 10 to 20% by weight of titanium dioxide and zinc oxide, respectively or mixed. If the amount of the white pigment is 10% by weight or less, the whiteness is too low, such as 90 or less, while the whiteness does not increase any more even when 20% by weight or more is used.

As an accelerator for controlling the curing rate of the silicate, it is preferable to use 1 to 5% by weight of sodium silicate. If the amount of sodium silicate added is 1% by weight or less, the curing rate may not be accelerated, whereas when 5% by weight or more of sodium silicate is added, gelation may occur and the coating cannot be used. More preferably, 2-3 wt% is preferable.

The silicone emulsion (Dow Corning Corporation 84) for improving the water resistance of the radon reducing white coating composition is preferably 0.5 to 5% by weight. If the amount of the silicone emulsion is 0.5 wt% or less, the water resistance is weak. On the other hand, even if it is 5 wt% or more, the effect of improving the water resistance is not obvious. More preferably, 1 to 3% by weight is preferable.

The amount of monazite that is an anion emitting mineral is preferably 0.5 to 5% by weight. When the amount of monazite used is 0.5% by weight or less, the amount of anion released is so low that the decomposition ability of the volatile organic compound and formaldehyde adsorbed on the zeolite is low, and when the amount is more than 5% by weight, the whiteness is reduced. More preferably, 1 to 3% by weight is preferable.

As for the usage-amount of the sodium alginate which is a viscosity modifier, 0.1-3 weight% is preferable. If the amount of sodium alginate used is 0.1% by weight or less, the viscosity of the coating is finally low, and when applied, the coating film is poor, and if it is 3% by weight or more, the viscosity is too high and coating is not performed. More preferably, 0.5 to 2% by weight is preferable.

Finally, water is added and mixed uniformly so that the total amount is 100% by weight to prepare a radon reduction white paint composition.

Hereinafter, the Example of this invention is described concretely with a comparative example. However, the exemplary embodiment of the present invention is not limited to these examples.

Examples 1-6

Preparation of Radon Reduction Paint

As shown in Table 1, the aqueous solution of calcium silicate having a solid content of 40 ± 2% by weight was mixed while stirring in water to obtain a homogeneous aqueous solution, and dissolved by adding sodium alginate as a viscosity regulator, followed by zeolite, sodium silicate, and white. After the pigments, monazite and silicone emulsion were added to prepare the compositions of Examples 1 to 6, the storage stability, deodorizing performance, whiteness and radon reduction rate according to each Example were evaluated.

       White paint composition for reducing radon (unit: weight%) ingredient Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 water 38 33 28 23 18 13 Potassium Silicate Aqueous Solution 40 40 40 40 40 40 Sodium alginate One One One One One One Zeolite 5 10 15 20 25 30 Sodium silicate 3 3 3 3 3 3 Titanium dioxide 10 10 10 10 10 10 Monazite One One One One One One Silicone emulsion 2 2 2 2 2 2

Various performance evaluations were carried out for the following Examples 1 to 6 prepared as in Table 1 above.

① Storage stability: Table 1 shows the results of observing storage stability visually by storing the Examples 1 to 6 at room temperature (20 ± 2 ° C.) for 3 months in the room.

      Storage stability test Item Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Phase separation No occurrence No occurrence No occurrence No occurrence No occurrence No occurrence

② Deodorization performance: For Examples 1, 3, and 6, the deodorization test was measured by the method of KICM-FIR-1004 which measures the change in concentration (ppm) of ammonia test gas with elapsed time by the gas detection tube method. Results The same results as in Table 3 were obtained.

Deodorization Effect of Ammonia Test Gas by Gas Detection Tube Method Elapsed time division Example 1 Example 3 Example 6
Early
Blank concentration (ppm) 200 200 200 Sample concentration (ppm) 200 200 200 Deodorization rate (%) - - -
30 minutes
Blank concentration (ppm) 194 194 194 Sample concentration (ppm) 68 57 48 Deodorization rate (%) 64.9 70.6 75.3
60 minutes
Blank concentration (ppm) 188 188 188 Sample concentration (ppm) 74.5 77.7 80.3 Deodorization rate (%) 48 42 37
120 minutes
Blank concentration (ppm) 178 178 178 Sample concentration (ppm) 30 25 17 Deodorization rate (%) 83.1 85.9 90.4

③ Radon Reduction Rate: The ground test piece used in the radon reduction rate test of the present invention used cement bricks of 190 × 90 × 55 mm 3 , and each of the test pieces was selected in Examples 1, 3, and 6 to apply the coating film to the brick test piece. After coating twice so as to have a thickness of 100 ± 10 μm, each of specimens 1, 3 and 6 was used. Uncoated specimens were marked with blank specimens. The radon radiation measurement test was carried out continuously for 72 hours in a small chamber by a continuous monitoring measurement method, and the inside of the chamber maintained a uniform temperature and humidity. The measured value was the average of the measured values of three experiments under the same environmental conditions. The radon reduction rate was the ratio of the radon reduction amount of each specimen to the radon emissivity of the ground specimen.

Radon Reduction Rate Test division Background Test piece 1 Test piece 3 Test piece 6 Radon Release Rate (pCi / m 2 hr) 17.9 10.6 9.5 8.7 Radon Reduction (%) 40.7 46.9 51.4

Claims (5)

In the white coating composition for reducing radon,
Zeolite 5-30 wt%, Solid content 40 ± 2 wt% Silicate 20-60 wt%, Sodium fluoride 1-5 wt%, White pigment 10-20 wt%, Monazite 0.5-5 wt%, Silicone emulsion White paint composition for reducing radon, characterized in that the composition containing 0.5 to 5% by weight and sodium alginate 0.1 to 3% by weight The method of claim 1,
Zeolite is a white paint composition for reducing radon, characterized in that it has an X-type crystal form The method of claim 1,
White paint composition for reducing radon using solid content of 40 ± 2% by weight of silicate solution, 20 ~ 60% by weight of sodium silicate or potassium silicate respectively or mixed The method of claim 1,
White paint composition for reducing radon using 1 to 5% by weight of sodium silicate to increase the curing rate of aqueous silicate solution The method of claim 1,
White paint composition for reducing radon using 0.5 to 5% by weight of silicone emulsion to improve water resistance

KR1020100016213A 2010-02-23 2010-02-23 White paint composition for radon reduction KR20110096777A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105778706A (en) * 2015-11-26 2016-07-20 无锡英普林纳米科技有限公司 Preparation method of anti-radon paint
US10589210B2 (en) 2014-12-30 2020-03-17 Evonik Operations Gmbh Aluminosilicates and coatings made therefrom for VOC removal
WO2022177079A1 (en) * 2021-02-22 2022-08-25 포항공과대학교 산학협력단 Sorbent for removing radon, production method for same, and radon removal method using same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10589210B2 (en) 2014-12-30 2020-03-17 Evonik Operations Gmbh Aluminosilicates and coatings made therefrom for VOC removal
CN105778706A (en) * 2015-11-26 2016-07-20 无锡英普林纳米科技有限公司 Preparation method of anti-radon paint
WO2022177079A1 (en) * 2021-02-22 2022-08-25 포항공과대학교 산학협력단 Sorbent for removing radon, production method for same, and radon removal method using same

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