KR20180005966A - Environment-friendly paint compositions using yellow soil stone - Google Patents

Abstract

The present invention relates to an eco-friendly functional water-based paint composition using red clay stone. More specifically, the eco-friendly functional water-based paint composition is binary, composed of a main ingredient and a curing agent. The main ingredient contains an epoxy resin, red clay stone powder, and water, whereas the curing agent contains amine, red clay stone powder, and water. According to the present invention, it is possible to promote health of users and residents since volatile organic compounds (VOCs) and heavy metal are barely detected in the paint composition while exhibiting excellent antibacterial functions, toxic gas adsorption functions, and far-infrared light and anion generation functions, thereby keeping living environment fresh.

Description

TECHNICAL FIELD [0001] The present invention relates to an environmentally friendly water-

More particularly, the present invention relates to a water-borne, environmentally friendly functional coating composition comprising a blend of blast furnace powder and a water-soluble binder, wherein volatile organic compounds (VOCs) and heavy metals are not detected at all, And is excellent in the emission of far-infrared rays and anions, and relates to an eco-friendly functional waterborne coating composition using the blast furnace.

In recent years, interest in living standards and health has increased, and a well-being culture has spread throughout the whole life. As a result, "Sick House Syndrome" Air Quality) is emerging as a topic of new environmental problems domestically and internationally.

The term "sick house syndrome" is a kind of chemical substance hypersensitivity, which refers to a phenomenon in which a certain chemical substance or various chemicals act in combination with indoor air pollution substances to affect the human body. It is a symptom that causes allergic diseases such as headache, vomiting, asthma, atopic dermatitis, skin rash which have not been before. The sick house syndrome is an environmental pollutant such as harmful substances, concrete, aldehyde, other organic solvent, gas, dust and various volatile organic compounds (VOCs) generated from concrete, furniture, adhesive, Substance is the main cause.

In general, a person exhibiting such symptoms may be very sensitive to chemical odors from the objects forming the indoor environment, and may cause serious health problems. In this way, indoor air is contaminated by various volatile organic compounds (VOCs) generated by building materials such as various building materials and paints used in construction by remodeling of new buildings or old buildings, Is continuously circulating and the concentration thereof is rapidly increasing.

As an alternative, periodic ventilation is also important, but more active methods such as elimination, substitution, or improvement of sources are required. In recent years, eco-friendly products that do not contain volatile organic compounds have appeared recently in furniture, adhesives, paints, and wallpaper. They are applied to indoor surfaces coated with concrete, wallpaper and paint to remove volatile organic compounds and activate the functions of human body A variety of bio-properties such as far-infrared rays, anion, antibacterial and deodorizing functions are being used. These products include photocatalyst coatings, bioceramic paints and natural paints.

Such prior arts include Korean Patent No. 10-0046750, "Anticorrosive Coating Composition ", Korean Patent Laid-Open No. 10-2003-0076531," Water-Soluble Coating Composition Using Bioceramics and Oriental Medicinal Material, 10-1999-0010915 "Water-Soluble Coating Composition ", and Korean Patent No. 10-0903686.

However, this prior art does not contain VOCs, but has a disadvantage that it is difficult to apply it as an exterior paint due to lack of water resistance. Further, no example using blast furnace has been found anywhere in the prior art.

KR 10-0046750 B1 KR 10-2003-0076531 A KR 10-1999-0010915 A KR 10-0903686 B1

Accordingly, it is an object of the present invention to provide an environmentally friendly functional coating composition using a blast furnace powder and a water-soluble binder in order to solve the problems of conventional paints, so that volatile organic chemicals (VOCs) and heavy metals are not detected at all , Odorless, and has superior water resistance, workability, and smoothness compared to ordinary water-based paints.

It also has excellent antimicrobial activity, adsorption of noxious gas, far-infrared radiation and anion release.

In order to accomplish the above object, the present invention provides an eco-friendly functional coating composition comprising a two-component type of a base and a curing agent, the base including an epoxy resin, a blast furnace powder and water, And water.

The subject and the curing agent are mixed in a weight ratio of 1: 0.8 to 1.2.

The subject matter is composed of 20 to 30% by weight of an epoxy resin, 40 to 50% by weight of a blast furnace powder and residual water, and the curing agent is composed of 10 to 15% by weight of amine, 40 to 50% by weight of blast furnace powder, .

The epoxy resin is a water-soluble bisphenol A type epoxy resin having an equivalent weight (g / eq) of 175 to 225, and the amine is a diglycidyl ether isphenol acetone ) Is a water-soluble amine having an amine value (mg KOH / g) of 250-310.

The hwangtoseok powder, a particle size of 400 ~ 800mesh, magnesium (MgO) 0.64% by weight of oxide, potassium (K ₂ O) 0.04% by weight of oxide, calcium (CaO) 54.5% by weight of oxide, iron oxide (Fe ₂ O ₃₎ 2.52 wt. %, aluminum (Al ₂ O ₃₎ 1.02% by weight of oxide, 0.08% by weight of titanium dioxide (TiO _2), copper (CuO) 0.05% by weight of oxide, barium (BaO) 0.05% by weight of oxide, strontium oxide (SrO) 0.12% by weight , characterized by consisting of a manganese (MnO) 0.12% by weight of oxide, silicon dioxide (SiO ₂₎ 1.52% by weight of sulfur (S) 0.03% by weight, 39.4% by weight of ignition loss.

INDUSTRIAL APPLICABILITY According to the present invention, since VOCs and heavy metals are not detected at all from the coating composition, it is possible to maintain the health of the constructor and residents, and has excellent antimicrobial and toxic gas adsorption function and far infrared ray and negative ion generation function, And the like.

1 is a test report of blast furnace powder according to Test Example 1 of the present invention.
2 and 3 are graphs showing the results of Test Example 3;
4 and 5 are graphs showing the results of Test Example 4. Fig.
6 and 7 are photographs showing the results of Test Example 6. Fig.
8 to 12 are photographs showing test procedures and results according to Test Example 8 of the present invention.

Hereinafter, the present invention will be described in detail.

First, the coating composition of the present invention is water-soluble and is an environmentally friendly aqueous coating composition in which VOCs and heavy metals are not detected at all. In addition, it has an excellent adsorption ratio to toxic gas, especially formaldehyde, and is excellent in antimicrobial activity. In addition, the generation rate of radiation and anion of far-infrared rays is high, giving a beneficial effect to the human body.

INDUSTRIAL APPLICABILITY The coating composition of the present invention can be applied to various construction materials, furniture, and interior materials as well as being applied as an exterior coating material because it has excellent water resistance even as a water-soluble paint.

Such an environmentally functional aqueous coating composition is composed of a two-pack type of a base and a curing agent, and the base includes an epoxy resin, a blast furnace powder and water, and the curing agent includes an amine, a blast furnace powder and water .

First, the bluffs used in the present invention will be described.

The above-mentioned blast furnace is loamy sedimentary rock made by natural weathering for tens of thousands of years, and the loamy stone is called loess marble, and the loess is a blast furnace.

These fossil fuels are distributed in large quantities in Pakistan and so on, and have beneficial microorganisms and many mineral fungi. It also has functions such as deodorization, antibacterial, anion generation, far-infrared radiation, humidity control and air purification. Particularly, the blast furnace powder used in the present invention has a composition as shown in Fig. 1, specifically 0.64 wt% of magnesium oxide (MgO), 0.04 wt% of potassium oxide (K ₂ O), 54.5 wt% of calcium oxide (CaO) Fe ₂ O ₃₎ 2.52% by weight, aluminum (Al ₂ O ₃₎ 1.02% by weight oxide, titanium dioxide (TiO ₂₎ 0.08% by weight, copper (CuO) 0.05% by weight of oxide, barium (BaO) 0.05% by weight of oxide, (Sr), 0.12% by weight of strontium (SrO), 0.12% by weight of manganese oxide (MnO), 1.52% by weight of silicon dioxide (SiO ₂ ), 0.03% by weight of sulfur and a loss of ignition strength of 39.4% Deodorization, antibacterial, anion generation, and far-infrared radiation. These effects are confirmed by the following embodiments.

In addition, the present invention includes the blast furnace powder as described above in both the base and the curing agent, so that even if the content of the blast furnace powder is increased, the physical properties of the coating composition are not lowered at all and the smoothness, workability and water resistance Respectively. In other words, when mixing the minerals with the conventional water-based coating composition, not only the workability and the water resistance are poor, but also the functionality of the mineral is not sufficiently exhibited by the resin stream or the curing agent, but the blast furnace powder having the composition according to the present invention Not only the physical properties of the coating composition can be improved, but also the specific function specific to the blast furnace powder is sufficiently exhibited.

Hereinafter, the subject constituting the coating composition according to the present invention and the curing agent will be described in detail.

First, the subject will be described.

The subject of the present invention includes epoxy resin, blast furnace powder and water.

At this time, the epoxy resin is a water-soluble bisphenol A type epoxy resin, which is a liquid epoxy resin having an equivalent (g / eq) of 175 to 225, a solid content of about 70% and a viscosity (cps, Resin is used. As an example, an epoxy resin in which a diglycidyl ether of bisphenol A is water-soluble can be used, and a commercially available product such as KEM-128-70 can be applied.

The blast furnace powder may be obtained by grinding rocky stones in the rock state and crushing the blast furnace stone as it is, or by crushing the crushed yellowish marble, and most preferably, after processing the ocher marble from rocky stones to reduce the manufacturing cost, It is to grind and use the remnant of the remaining stones. In this case, the particle size of the blast furnace powder is preferably 400 to 800 mesh. If the particle size is too large, the workability of the coating composition is deteriorated. If the particle size is too small, unnecessary cost is unnecessary due to unnecessary pulverization.

The object of the present invention is to provide a stable coating composition because VOCs are not generated at all by including water as a solvent, and there is no problem caused by odor during operation. There is also the advantage that the working tool of the paint composition can be rinsed with water.

The mixing ratio of the epoxy resin, blast furnace powder and water in the subject is preferably 20 to 30% by weight of an epoxy resin, 40 to 50% by weight of a blast furnace powder, and water in a remaining amount. If the blending amount of the epoxy resin is too small, If the blending amount of the blast furnace powder is too small, the functional properties are not sufficient. If the blending amount of the blast furnace powder is too small, the physical properties of the coating material are lowered.

The curing agent according to the present invention includes an amine, a blast furnace powder and water.

As the amine, a water-soluble amine is used, and an amine value (mg KOH / g) of 250-310 is used. More specifically, a water-soluble amine to which diglycidyl ether bisphenol aceton is added to pentaethylene hexa amine reacted with a fatty acid and a toly oil can be used.

The preparation of the water-soluble amine is well known in the field to which this technology belongs, so that detailed description thereof will be omitted. In addition, it is also possible to use an amine other than the above-mentioned type by water-soluble, and H-23, which is a commercially available product, may be used.

The blast furnace powder is pulverized to 400 to 800 mesh in the same manner as described above.

In addition, the curing agent also prevents the generation of VOCs by using water as a solvent.

The curing agent is preferably composed of 10 to 15% by weight of amine, 40 to 50% by weight of blast furnace powder, and water in a remaining amount. When the amount of amine is too small, hardening is difficult. When the amount of amine is excessive, If the blending amount of the blast furnace powder is too small, it is difficult to exhibit sufficient functionality. If the blending amount is too large, the excess may result in deteriorating the physical properties of the coating composition.

In the present invention, the above-mentioned subject and the curing agent are mixed at a weight ratio of 1: 0.8-1.2, most preferably 1: 1, and when the mixing ratio is exceeded, the physical properties of the coating composition due to unreacted amine and uncured epoxy It will not be good.

The green functional water-based coating composition of the present invention having the above-described structure is preferably applied to a thickness of about 50 to 600 탆, and most preferably about 300 탆. When it is dried at 25 캜 for about 60 minutes, Curing takes about a week.

Accordingly, the environmentally friendly functional water-based coating composition of the present invention can control the humidity of the room due to the adsorption of toxic gases, the antibacterial activity, the moisture absorption and the moisture absorption, and generates the far-infrared rays and the negative ions to keep the indoor space applied with the coating composition pleasant . In addition, it has excellent smoothness, workability, water resistance, and odorless and toxic gas is not discharged during operation, thereby improving working environment. In addition, there is also an advantage that after the application of the coating composition, the working tool can be washed with water. It also has the advantage of being widely applicable regardless of the object, as well as wood, loess, steel and cement.

On the other hand, the subject and curing agent of the coating composition according to the present invention may further contain various additives known in the field of coating composition, and the addition thereof is not limited as long as it is a known additive.

Hereinafter, the present invention will be described in more detail by way of the following examples.

(Example 1)

First, 2.0 kg of a water-soluble epoxy resin of a bisphenol A type (200 g / eq), 3.5 kg of pale earth powder, and 2.5 kg of water were stirred at 1700 rpm for 30 minutes.

First, water-soluble amine and water were stirred at 1700 rpm for 20 minutes at room temperature, and further blended with bluestone powder for 30 minutes. Then, the water-soluble amine and water were added to the mixture. Lt; / RTI >

Next, the above-mentioned base and the curing agent were mixed at a weight ratio of 1: 1.

At this time, the blast furnace powder was pulverized into powder having a size of 800 mesh and imported from Pakistan.

(Test Example 1)

First, the composition of the blast furnace powder used in Example 1 was analyzed. The analysis was commissioned by Korea Ceramic Institute. The results are shown in FIG.

It has been confirmed that the blast furnace powder of the present invention has a composition as shown in Fig.

(Test Example 2)

The physical properties of the above Example 1 were tested. The above properties were tested according to the method of KS M 6010: 2014, and the test was commissioned by Korea Institute of Construction & Living Environment Test. The results are shown in Table 1 below.

Results of Test Example 2. Test Items unit Test result Test environment lead K.U 109 (25 ± 0.5) ° C Non-volatile matter
(In paint) % 69 (105 ± 2) ° C Drying time
(Solidification) minute 20 (23 ± 1) ° C., (50 ± 4)% R.H. 45 °, 0 ° diffuse reflectance % 48 (21 ± 2) ° C., (43 ± 5)% R.H. Glossy (85˚) - One (21 ± 2) ° C., (43 ± 5)% R.H. Concealment rate % 85 (21 ± 2) ° C., (43 ± 5)% R.H. Washability time 500 or more (21 ± 2) ° C., (43 ± 5)% R.H. Freezing stability - clear (-5 ± 1) ° C. Condition in container - clear (21 ± 2) ° C., (43 ± 5)% R.H. Alkali resistance - clear (21 ± 2) ° C., (43 ± 5)% R.H. Storage stability
(When not in the container) - clear (49 ± 2) ° C smell - clear (21 ± 2) ° C., (43 ± 5)% R.H.

As can be seen from Table 1, it was confirmed that the coating composition according to the present invention had excellent physical properties.

(Test Example 3)

The adsorption power of Example 1 was tested. The adsorption force was confirmed by formaldehyde (HCHO) and ammonia (NH ₃ ). As a test method, the coating composition of Example 1 was applied to a sheet of 100 mm x 200 mm in thickness of 0.3 mm, dried for 6 hours, Lt; / RTI > and sealed. At this time, the initial concentration of the test gas was injected with 50 μmol / mol of ammonia and 20 μmol / mol of formaldehyde, and the concentration of the test gas was measured at the initial (0 minute), 30 minutes, 60 minutes, 90 minutes and 120 minutes, Respectively. The concentration of the test gas was measured by a gas detection tube (formerly KS I 2218), and the test was carried out in the absence of a sample, which was called blank concentration.

The removal rate of the test gas for each time period was calculated as follows.

(%) = [{(Blank concentration) - (sample concentration)} / (blank concentration)] × 100

The test was commissioned by Korea Institute of Construction & Living Environment Test. The results are shown in Tables 2 and 3 and FIGS. 2 and 3 below.

The results of Test Example 3 (formaldehyde) Test Items Test result Test environment
Blank concentration
(μmol / mol) Sample concentration
(μmol / mol) Deodorization rate (%) Deodorization
(HCHO) 0 minutes 20 20 0.0 (19.9 ± 0.03) ° C
(40.8 ± 0.5)% RH
30 minutes 20 11 45.0 60 minutes 20 10 50.0 90 minutes 20 9 55.0 120 minutes 20 8 60.0

* Detection limit 0.5μmol / mol

The results of Test Example 3 (ammonia) Test Items Test result Test environment
Blank concentration
(μmol / mol) Sample concentration
(μmol / mol) Deodorization rate (%) Deodorization
(NH ₃₎ 0 minutes 50 50 0.0 (19.9 ± 0.03) ° C
(40.8 ± 0.5)% RH
30 minutes 49 17 65.3 60 minutes 49 15 69.4 90 minutes 49 13 73.5 120 minutes 49 12 75.5

* Detection limit: 0.2 μmol / mol

As can be seen from Table 2 and FIG. 2, the coating composition of the present invention showed an adsorption rate of 45% or more from the point of time when 30 minutes passed to formaldehyde, and reached an adsorption rate of 60% after 120 minutes.

In addition, as shown in Table 3 and FIG. 3, the adsorption rate of ammonia was 65% or more after 30 minutes, and the adsorption rate reached 75.5% after 120 minutes.

Thus, it has been confirmed that the paint composition according to the present invention can enhance the indoor air quality.

(Test Example 4)

The far infrared ray emissivity of Example 1 was tested. The test method was followed in accordance with KCL-FIR-1005; 2011 and measured by FT-IR Spectrometer. The results are the same as those shown in Table 4 and FIG. 4 (far infrared ray emissivity) and FIG. 5 (far infrared ray radiation energy).

Results of Test Example 4 Test Items unit Test result Remarks Far-infrared emissivity
(Measurement temperature: 40 占 폚, measurement wavelength: 5 占 퐉 to 20 占 퐉) - 0.889 (22.4 ± 0.1) ° C
(24.2 ± 0.3)% RH
Far-infrared radiation energy
(Measurement temperature: 40 占 폚, measurement wavelength: 5 占 퐉 to 20 占 퐉) W / ㎡ 3.59 × 10 ² (22.4 ± 0.1) ° C
(24.2 ± 0.3)% RH

As can be seen from Tables 4, 4 and 5, the coating composition according to the present invention has a far infrared ray emissivity of 89% and has a high radiant energy.

(Test Example 5)

The negative ion generation rate of Example 1 was tested. The test method was followed by KCL-FIR-1042; 2011, and the test was commissioned by Korea Institute of Construction & Living Environment Test. The results are shown in Table 5 below.

Results of Test Example 5 Test Items unit Test result Remarks Negative ion: Blank / Cm2 72 (21.1 ± 0.2) ° C
(47.2 ± 0.3)% RH Anion: Sample / Cm2 91 (21.1 ± 0.2) ° C
(47.2 ± 0.3)% RH

As shown in Table 5, it was confirmed that the coating composition according to the present invention emitted a large amount of anions.

(Test Example 6)

The antibacterial properties of the above Example 1 were tested. The antimicrobial activity was tested against Escherichia coli and Staphylococcus aureus. The test method was followed by KCL-FIR-1002; 2011, and the test was commissioned by Korea Institute of Construction & Environment Test. Escherichia coli ATCC 25922 and Staphylococcus aureus ATCC 6538 were used as Escherichia coli and Staphylococcus aureus in this test, respectively, and the sample was 4 g. The bacterial concentration (CFU / mL) of the inoculum was 1.7 × 10 ⁶ for E. coli, Staphylococcus aureus was 1.2 x 10 ⁶ , and the results were as shown in Table 6 and Figs. 6 to 8 below.

Results of Test Example 6 Test Items
Test result Test environment
Initial concentration
(CFU / mL) Concentration after 24 hours
(CFU / mL) Bacterial reduction rate
(%) Escherichia coli Blank 1.7 x 10 ⁴ 5.9 x 10 ⁴ - (37.1 ± 0.2) ° C
(31.6 ± 0.3)% RH

Example 1 1.7 x 10 ⁴ <10 99.9 Staphylococcus aureus Blank 1.2 x 10 ⁴ 4.4 × 10 ⁴ - Example 1 1.2 x 10 ⁴ <10 99.9

As can be seen in Table 6 and FIGS. 6 and 7, the test results for Escherichia coli, Staphylococcus aureus and Pneumococcus showed a bacterial reduction rate of 99.9% after 24 hours.

(Test Example 7)

The heavy metal detection of Example 1 was tested. The test method was in accordance with SPS-KPIC 2000-1546: 2008, and the test was commissioned by Korea Institute of Construction & Living Environment Test. The results are shown in Table 7 below.

The results of Test Example 7 Test Items unit Test result Lead (pb) mg / kg Not detected (detection limit 5) Barium (Ba) mg / kg Not detected (detection limit 5) Arsenic (As) mg / kg Not detected (detection limit 2) Selenium (Se) mg / kg Not detected (detection limit 5) Mercury (Hg) mg / kg Not detected (detection limit 2) Antimony (Sb) mg / kg Not detected (detection limit 5) Cadmium (Cd_ mg / kg Not detected (detection limit 5) Chromium (Cr) mg / kg Not detected (detection limit 2)

As shown in Table 7, it was confirmed that no heavy metal was detected in the coating composition according to the present invention.

(Test Example 8)

The composition of Example 1 was tested by the following method.

That is, after the use of the coating composition of Example 1, the washing performance of the working container was tested, and the washing performance of the working container was tested in the following manner. First, the mixture of the subject matter of Example 1 and the curing agent was mixed in a mixing container at a weight ratio of 1: 1 by using a mixer. The coating material was sufficiently buried in the rollers, and the mixing container, the mixer and the roller were allowed to stand for 30 minutes. Then, the coating composition in the container was transferred to another container, and the container, mixer, and roller in which the original coating composition was mixed were washed with a detergent and water alone without using any separate cleaning agent. The washability was visually observed. The test procedure and results are shown in Figures 8-12.

As can be seen from FIGS. 8 to 12, it can be seen that the working container and tool using the coating composition of the present invention can be cleaned only with water without using a separate cleaning agent or detergent.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the present invention is not limited to the disclosed exemplary embodiments. It will also be appreciated that many modifications and variations will be apparent to those skilled in the art without departing from the scope of the invention.

Claims (5)

It consists of a two-component type,
The subject matter includes epoxy resin, blast furnace powder and water,
Wherein the curing agent comprises an amine, a blast furnace powder, and water.
The method according to claim 1,
The subject matter and the curing agent are,
1: 0.8 ~ 1.2 weight ratio.
The method according to claim 1,
The subject matter is composed of 20-30% by weight of epoxy resin, 40-50% by weight of blast furnace powder and residual water,
Wherein the curing agent is composed of 10 to 15% by weight of amine, 40 to 50% by weight of blast furnace powder, and residual water.
The method according to claim 1,
The epoxy resin is a water-soluble bisphenol A type epoxy resin having an equivalent (g / eq) of 175 to 225,
The amine is a water-soluble amine to which diglycidyl ether isphenol aceton is added to pentaethylene hexaamine and has an amine value (mg KOH / g) of 250 to 310 Functional waterborne coating composition using blast furnace.
5. The method according to any one of claims 1 to 4,
In the blast furnace powder,
The particle size is 400 to 800 mesh,
Magnesium (MgO) 0.64% by weight of oxide, potassium (K ₂ O) 0.04% by weight of oxide, calcium (CaO) 54.5% by weight of oxide, iron oxide (Fe ₂ O ₃₎ 2.52% by weight, aluminum (Al ₂ O ₃₎ oxide 1.02 wt. , 0.08 wt% of titanium dioxide (TiO ₂ ), 0.05 wt% of copper oxide (CuO), 0.05 wt% of barium oxide (BaO), 0.12 wt% of strontium oxide (SrO), 0.12 wt% of manganese oxide 1.52% by weight of SiO ₂ , 0.03% by weight of sulfur, and 39.4% by weight of ignition loss.

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