KR20050092827A - Inorganic ceramic paint - Google Patents

Abstract

The present invention improves the physical and chemical properties by adjusting the molar ratio (MR) of carbonic silica, which is excellent in water resistance and stable chemical bonding with cement, and at the same time, powders emitting far infrared rays or anions, photocatalytic or antibacterial functions. The present invention relates to an inorganic ceramic paint having an increased environmental function as a paint by using a paint having a powder or the like added as a coating material for a medical device or a finishing material for a concrete building.

The present invention has a molar ratio (MR) of silicic acid and alkali (nSiO ₂ / K ₂ O) of 2.5 to 7.0 and 5 to 40 parts by weight of far-infrared radiating material and 1 to 1 anion emitting material with respect to 100 parts by weight of carbonic silica, which functions as a binder. It provides an inorganic ceramic paint, characterized in that at least one selected from 30 parts by weight, 0.5 to 10 parts by weight of photocatalyst powder and 0.1 to 5 parts by weight of antibacterial powder is added.

The present invention as described above contains a flame-retardant component, can prevent fire, excellent water vapor transmission rate, light resistance, resistance to acid, peeling off the paint from the concrete surface by having an expansion coefficient similar to concrete Phenomenon can be prevented and a stable chemical crystal structure can be formed to increase the integrity of the concrete surface.

Description

Inorganic Ceramic Paint

The present invention relates to an inorganic ceramic paint and a method for manufacturing the same, and more particularly, to an environmentally friendly inorganic paint prepared by adjusting the molar ratio (MR) of carysilicate which is excellent in water resistance and stably chemically bonded to cement, By using it as a finishing material for concrete buildings, it relates to an inorganic ceramic paint that can improve the acid resistance, corrosion resistance, antibacterial, nonflammable, light resistance of concrete.

In general, various houses, apartments, office buildings, etc. are structurally stable concrete for long-term use, and synthetic resin paints, such as water-based or oil-based paints, are used as finishing materials to improve the protection and aesthetics of building structures. I use it.

The concrete structure as described above is aging gradually over a long time, the exterior finish material exposed to sunlight fades the color of the exterior material, and the concrete walls are severely corroded by soot, sulfur compounds such as vehicle exhaust gas or acid rain, Corrosion even exposes rebar, further accelerating aging. In addition, various environmental factors are harmful to the human body such as bad smell or mold on concrete floor or wall.

In order to solve this problem, faded or severely corroded exterior finishes are replaced with new boards such as stone panels and tiles, and the interior walls are repainted with synthetic resin emulsion paints.

However, the methods for preventing such deterioration of buildings are only temporary measures. In particular, most of the commercial paints on the market consists of organic compounds, so that the smell of the solvent, that is, environmental pollution caused by VOCs (Volatile Organic Compounds) is not only serious, but also 5 to 7 years have passed. After that, the decomposition of the organic compounds contained in the paint began to be re-coated.

On the other hand, as research on environmentally friendly buildings has been actively conducted, many research data have been published on the effect of concrete structures on the human body.

Until recently, it has been known to some extent that the toxicity of cement and internal finishing paints generated from building concrete are harmful to the human body, but there has been no case that such cement or paint has a great effect on the human body.

In particular, in recent years, a new coin has been created a new house syndrome, which refers to damage to the human body due to harmful substances emitted from various paints and building materials. In other words, the skin is itchy, headache, and mental and physical instability due to the toxicity of cement released from the concrete floor and walls forming the main skeleton of the new house. In addition to chemicals such as building paints and wallpaper used as interior finishing materials, benzene, toluene, xylene and formaldehyde, which are continuously emitted from chemicals such as wooden furniture, decorative products, and curtains and carpets, are used. VOCs and heavy metals contain fatal hazards to the human body that can cause general paralysis, respiratory illness, headaches and allergies. It is implicated.

In order to overcome the environmental pollution problem as described above, a lot of environmentally friendly building paints have been proposed. In particular, an aqueous paint substituted with water instead of a volatile organic compound, i.e., an inorganic water-based paint compounded with a simple filler such as hard coal (CaCO ₃ ), is commercially available.The organic material used as a binder (e.g. water-soluble acrylic) ) Has a disadvantage in that it decomposes after a certain period of time and formaldehyde (HCHO) is included because of storage problems. In addition, inorganic ceramic paints made of sodium silicate (water glass) have a disadvantage in that they are vulnerable to water resistance.

In addition, a method of reducing solvent usage (high-solidification, high-solidification) by increasing the solid component ratio in the paint, and powder coating without using a solvent have been developed. However, the method such as aqueous or high-solidification can reduce the environmental pollutants, but it is not a fundamental solution because it has to be repainted from time to time, and in the case of powder coating requires a separate heat treatment process actually It is not applicable to concrete structures in the field.

Accordingly, the present invention has been proposed to solve the above problems, and by adjusting the molar ratio (MR) of the copper silicate which is excellent in water resistance and stable chemical bonding with cement, improves physical and chemical properties, and emits far infrared rays. It is an object of the present invention to provide an inorganic ceramic paint having an increased environmental function as a coating material by using a coating material containing a powder, an ion-releasing powder, a photocatalytic powder, or the like as a coating material for a medical device or a finishing material for a concrete building.

In order to achieve the above object, the present invention has a molar ratio (MR) of silicic acid and alkali (nSiO ₂ / K ₂ O) of 2.5 to 7.0 and 5 to 40 parts by weight of far-infrared radiation substance with respect to 100 parts by weight of carysilicate which functions as a binder. It provides an inorganic ceramic paint, characterized in that at least one selected from 1 to 30 parts by weight of the anion-releasing material, 0.5 to 10 parts by weight of the photocatalyst powder and 0.1 to 5 parts by weight of the antibacterial powder is added.

Hereinafter, embodiments of the present invention will be described in detail.

Inorganic ceramic paints according to the present invention is implemented to create a comfortable living environment by blocking the harmful substances emitted through the cement or building materials used to form the main skeleton of various buildings in advance, the implementation of the present invention In the example, a silicate prepared by adjusting the molar ratio of silicic acid and alkali is used as a binder, and powders, which are capable of improving acid resistance, corrosion resistance, chemical resistance, antibacterial property, nonflammability, light resistance, and far-infrared radiation substances and anion-emitting substances It is proposed to improve the composition coating by adding a.

That is, in the present invention, 5 to 40 parts by weight of a substance emitting far-infrared rays and an anion with respect to 100 parts by weight of a carry silicate which has a molar ratio MR (nSiO ₂ / K ₂ O) of 2.5 to 7.0 and functions as a binder. To prepare a paint containing at least one functional material selected from 1 to 30 parts by weight of a material emitting light, 0.5 to 10 parts by weight of a photocatalyst powder, and 0.1 to 5 parts by weight of an antibacterial powder to be used as an interior or exterior paint or medical coating of a building. It is characterized by one.

Herein, when the molar ratio of the carbo silicate is 2.5 or less, the degree of bonding is inferior in molecular water and there is little water resistance. In addition, when the molar ratio is more than 7.0, intermolecular bonding is increased, so that the water resistance can be greatly improved. Since it takes too large, there is a problem without economics.

Among the functional materials added to the carry silicate binder as described above, the far-infrared radiating material is ceramic powder such as chorionic wool having a far-infrared emissivity of 85% or more at room temperature of 40 ° C, such as quartz-monzonite, gneiss and pyloric tuff. It consists of a ceramic powder containing one or more selected from the group of natural minerals.

In addition, the anion-releasing material is, for example, tourmaline, loess, amethyst, raw ore, bamboo charcoal, Uwang wang, guinea stone, obsidian, ganban stone, light mineral stone, lava, precious stone selected from one or more natural stone material or algae coal, It consists of a powder of at least one charcoal material selected.

The particle size of these far-infrared powders or anion powders consists of 1-50 micrometers, and in particular, in the case of anionic powder, the addition ratio is determined within 1-30 parts by weight so as to release 300-2000 Ion / cc. At this time, substances with a small amount of anion released, such as tourmaline, are injected to the maximum within the allowable range, while high anions, such as heat, are expensive, while expensive materials mix only a minimum amount with the anion mineral. Determine and add.

Among the ceramic materials emitting far infrared rays and anions listed above, for example, the far-infrared emissivity of natural stone and charcoal and the measured values of anions are shown in Table 1 below.

<Table 1> Far-infrared emissivity of natural stones and charcoal, measured anion

sample Production Far infrared ray emission rate% Negative ions-max (pcs / cc) Tourmalin Brazil 88 2,485 Ocher Korea 95 2,946 Cicada " 88 4,278 Amethyst " 81 2,152 Raw ore " 86 2,295 Bamboo charcoal " 85 2,039 Uiwang Stone Busan, Japan 86 4,434 Guiyang Stone      Gunma 96 9,451 Obsidian      Janya   753 Elvan Stone      climate 87   758 Sea algae      The three continents 91 1,695 Charcoal      Host 93 8,348 Dragon King Stone      climate 3,424 Gwangmyeongseok      Gangsan (岡山 2)   792 Lava      Sanli 96 1,341 Elvan Stone Nanjing, China 96   626 Ghost stone 87 2,274 Charcoal 82 1,748      * Anion represents the numerical value caused by the vibration of the crushed product.

In particular, in order to increase the amount of anions generated in the ceramic powder emitting far-infrared radiation and anions, strontium, vanadium, zirconium, cerium, neodymium, lanthanum, barium, rubidium, cesium, gallium, praseodymium, uranium, and radium are selected. One hitore mineral can be blended.

Table 2 below shows a component analysis table of ore containing heat and ash elements.

<Table 2>

Component Unit (ppm) Strontium (Sr) 167 Vanadium (V) 25.95 Zirconium (Zr) 44.7 Ce (Ce) 68.42 Neodymium (Nd) 36.28 Lanthanum (La) 37.68 Barium (Ba) 63.3 Rubidium (Rb) 200 Cesium (Cs) 51.26 Gallium (Ga) 12.75

The above-mentioned natural earth natural stone is mixed with far-infrared and anion-emitting ceramic powder in a 1 to 80 weight ratio.

Table 3 below shows the component analysis table of the anion powder containing the hot earth and the ash element.

<Table 3>

ingredient wt% LA ₂ O ₃ 4.10 CeO ₂ 8.00 ZrO ₂ 55.00 Nd 4.20 Pr 1.20 Al ₂ O ₃ 1.00 SiO ₂ 22.44 P ₂ O ₅ 3.20 Fe ₂ O ₃ 0.26 1Gloss 0.60 system 100

Measuring organization: Far-infrared evaluation center in Korea Building Materials Testing Institute

Issue Number: FIA- 478 / 2002.11.02

Test Result: Anion 30410 Ion / cc

Among the functional materials added to the carry silicate binder, the antimicrobial powder is composed of, for example, titanium dioxide (TiO ₂ ) or silver coated zeolite to perform antibacterial, sterilizing and deodorizing functions. These powders are used in combination with the far-infrared powder and anion powder, which can maximize the far-infrared and anion-releasing function by acting as a catalyst that can cause synergy of far-infrared and anion release in addition to the above-mentioned function.

In addition, among the functional materials added to the carry silicate binder, the photocatalyst powder is activated by absorbing and excited light energy by light irradiation to promote oxidation and reduction reactions. For example, titanium dioxide (TiO ₂ ), zinc oxide ( It is composed of semiconductor photocatalysts such as ZnO) and tungsten oxide (WO₃) to perform organic decomposition, cleaning of air and solid surfaces, deodorization and sterilization.

When the particle size of the photocatalyst powder is about 1 to 100 nm, it exhibits a function as a photocatalyst, and when the addition ratio of the photocatalyst powder is 0.5 wt% or less, it does not function as a photocatalyst, and when it is 10 wt% or more, it is very expensive. Empowerment is not economical.

In the above composition, when added to the above-mentioned compounding ratio among the addition ratios of the respective functional materials, that is, the far infrared powder, the anion powder, the photocatalyst powder, and the antibacterial powder, workability (painting, spraying) as a paint is significantly decreased. In addition, when added below the compounding ratio, the effect of the functional material is very weak. Therefore, in order to achieve the required function, an appropriate amount of the above compound must be added.

In addition, the embodiment of the present invention is characterized in that 1 to 20 parts by weight of a black body powder is further included in the paint including the above components to make an economic heat-resistant paint.

The black body powder is made of, for example, carbon, graphite, SiC, ferrite, and the like, and a powder sized in a sieve of approximately 325 mesh or more is used. Moreover, in the addition ratio of the said black body powder, when it added at 1 weight part or less, the heat radiating function effect is insignificant, and when added at 20 weight part or more, workability as a paint is inferior.

Liquid silicate (K ₂ O-nSiO ₂ -xH ₂ O) presented in the embodiment of the present invention is the most widely used as a binder function in inorganic paints and is most widely used with sodium silicate in water-soluble silicate. It is an inorganic compound. In addition, the liquid silicate is better in water resistance than sodium silicate and no whitening phenomenon.

The liquid silicate is used for various purposes according to the molar ratio and concentration of SiO ₂ / K ₂ O, the molar ratio of the liquid silica (potassium) is calculated as follows.

Mole ratio of carbo silicate = weight ratio of SiO ₂ / K ₂ O × 1.57

Here, 1.57 means a general constant.

The general manufacturing method of silicate silica is as follows.

First, a compound (sand, silica, etc.) containing silica (SiO ₂ ) and alkali (Na ₂ CO ₃ , K ₂ CO ₃ ) are put together and dissolved at a high temperature of about 1300 ° C. to form a glass-like crystal.

When this crystal is added to water and dissolved at about 120 ~ 150 ℃, it turns into a viscous liquid. In this state, a small polymer molecule of SiO ₂ is dissolved in alkaline solution.

Next, Amorphous SiO ₂ , White Carbon (intercalated Silica) containing at least 88 wt% of SiO ₂ , and KOH are added together and dissolved at 80 to 90 ° C. to prepare a liquid phase.

In this case, in consideration of the manufacturing cost, the amorphous SiO ₂ and White Carbon (intercalation Silica) may be used alone or in combination.

The properties of the copper silicate produced by the above method is determined by the ratio of the molecular weight of SiO ₂ and K ₂ O (nSiO ₂ / K ₂ O), that is, the molar ratio (MR) and the content of SiO ₂ (wt%). This means that the more the alkali, the smaller the molar ratio (MR), and ultimately the smaller the molecules of the SiO ₂ polymer (Polymer). Then, the silanol group (~ Si-OH), which is a reactor, is increased to increase the adhesion but the water resistance is deteriorated. As the amount of SiO ₂ increases, the amount of K ₂ O also increases to match the same molar ratio (MR), so that the total amount of solids dissolved in the solution also increases.

Next, in view of the adhesiveness, water resistance, viscosity, and economics, an embodiment was selected by selecting a silicate having a molar ratio (MR) of 4.5.

<Table 4> Carysilicate Ingredients Table

Molar ratio (MR) SiO ₂ (wt%) K ₂ O (wt%) 3.5 20.0 8.9 4.5 20.0 6.9 5.0 15.0 4.7

<Table 5> Formula of Carrying Silicate

Molar ratio (MR) Amorphous SiO ₂ 45% KOH H ₂ O    system 3.5 200 (gr) 237 (gr)    526 (gr) 4.5 200 184    616  1000 kg 5.0 150 124    726

The <Table 5> in the sense that the 45% K ₂ O is included in the K ₂ O 45 parts by weight based on 100 parts by weight of H ₂ O, and the remainder 55 parts by weight means the H ₂ O.

In the production of carbosilicate silica, as the molar ratio increases, as shown in the following figure, the Si content is increased, and thus the bonding degree with Si contained in the cement is increased, thereby forming an even harder film. However, in order to make a product having a molar ratio of 7.0 or more, the reaction facility also needs to be large, so the investment cost is too large for the selling price, so there is no economic feasibility.

<Chemical Bonding of Paint and Cement>

<Table 6> Table of Functional Paints

Ingredient division Interior paint Exterior paint Medical Paints Heat dissipation paint Far Infrared Powder 35 30 30 Anion powder 3 5 4 Photocatalyst Powder One 4 4 Antibacterial Powder One One 2 Black Body Powder 20 Silicate Carrier Solution 100 100 100 100     system 140 140 140 120

An example of the manufacturing process of this invention comprised as mentioned above is demonstrated.

First, the temperature of the reactor is raised to 80 ° C. so that amorphous SiO ₂ can be easily dissolved while uniformly mixing 184 gr of 45% KOH solution described in Table 5 and 800 gr of 616 gr of water.

Then, while dissolving 200 gr of amorphous SiO ₂ powder is slowly added to dissolve, while maintaining the temperature of about 80 ~ 85 ℃ to completely dissolve.

Next, 5 to 40 parts by weight of far-infrared powder, 1 to 30 parts by weight of anionic powder, 0.5 to 10 parts by weight of photocatalyst powder, and 0.1 to 5 parts by weight of antibacterial powder, based on 100 parts by weight of the binder of the silicate solution bindered as described above. After the addition, the coating composition is uniformly dispersed using a high speed stirrer or a ball mill to complete the paint composition.

The paint of the present invention constructed and manufactured as described above has excellent antibacterial, anti-mildew, far-infrared radiation, anion emission, and deodorizing function. When the functional paint is used as an exterior paint of concrete structures, it is more resistant to sulfur compounds such as soot and automobile exhaust gas. It has excellent durability and chemical resistance. In particular, the concrete is severely corroded to expose the rebar, such as having a more excellent properties for the corrosion of the concrete structure.

In particular, the present invention is a colloidal silica solution (colloidal silica) as the main component, there is no toxic gas generated in the fire, and natural minerals such as SiO ₂ , Al ₂ O ₃ , ZnO, etc. of the flame retardant component is added to the heat itself when the fire occurs By foaming, the surface of the adherend is blocked for a certain time from fire.

The advantage of the paint of the present invention is not only excellent initial workability due to easy penetration into the surface of the adherend, but also excellent adhesion and adhesive strength, and inorganic ceramic paint that solves the durability problem of general organic paint, cement and chemical siloxane bond. It is semi-permanent by (Si-O-Si).

In addition, the present invention is an environmentally friendly water-soluble paint without solvents or VOCs, siloxane bond (Si-O-Si) to prevent corrosion of metals and concrete, as well as alkaline minerals to prevent mold / fungus growth. Suppressed, far-infrared radiation (40 ℃ x 91.5%), anion emission-forest bath effect (1363 Ion / cc), Deodorizing effect (2Hr x 83.4%) is excellent.

Various test results of the present invention are as follows.

The results of the first test conducted by the Korea Institute of Building Materials are as follows.

1) Far Infrared Radiation Test / No. FIR-161

Emissivity (5-20mm) Radiation energy (W / m ² ) Measuring temperature 0.915 3.69 x 10 ² 40 ^O C

2) Anion Release Test / No. FIA-140

 Sample Name Anion (ION / cc) Measuring temperature Functional Building Finish 1363 24 ^O C

3) Antifungal test / No. FAB-685

Test Items Period of culture test  Antifungal test 1 week later after 2 weeks 3 weeks later 4 weeks later 0 0 0 0

4) Deodorization test / No. FID-969

Test Items Elapsed time Blank concentration Sample concentration Deodorization rate (%) Deodorization Test (Ammonia) (minute) (ppm) (ppm) Early 500 500 - 30 470 143 69.6 60 427 93 78.2 90 378 70 81.5 120 332 55 83.4

The results of the second test conducted by the Korea Institute of Building Materials are as follows. This test is the result of January 12, 2004.

1) Far Infrared Radiation Test / No. FIR-028

Emissivity (5-20mm) Radiation energy (W / m ² ) Measuring temperature 0.911 3.68 x 10 ² 40 ^O C

2) Anion Release Test / No. FIA-020

 Sample Name Anion (ION / cc) Measuring temperature Functional Building Finish 1871 24 ^O C

  3) Deodorization test / No. FID-009

Test Items Elapsed time Blank concentration Sample concentration Deodorization rate (%) Deodorization Test (Ammonia) (minute) (ppm) (ppm) 30 194 88 54.6 60 152 63 58.6 90 131 51 61.1 120 116 44 62.1

As mentioned above, although the Example of this invention was described in detail, this invention is not limited to the said Example, A various change, a deformation | transformation are possible by a person with ordinary knowledge within the range of the technical idea of this invention. Will be apparent to those of ordinary skill in the art.

As described above, according to the present invention, since the silicate, which functions as a binder, is made of an inorganic material, it is excellent in water vapor transmission rate and thus prevents fragmentation and corrosion of the building, and fungus and algae such as molds are generated on the surface of the building. There is an effect that can be prevented.

In addition, the present invention includes a flame-retardant component, even if exposed to the oxygen acetylene flame, unlike the emulsion paints and other organic paints do not catch the fire can prevent fire, prevent the generation of toxic gases, analogy Miracle pigments and inorganic adhesives have other effects of excellent light resistance and resistance to acids.

In addition, the present invention has a thermal expansion coefficient similar to that of concrete to prevent the peeling of the paint peeling from the concrete surface, there is another effect that can increase the integrity of the concrete surface by forming a stable chemical crystal structure.

Claims (7)

The molar ratio (MR) of silicic acid and alkali (nSiO ₂ / K ₂ O) is 2.5 to 7.0 and 5 to 40 parts by weight of far-infrared radiating material and 1 to 30 parts by weight of anion emitting material with respect to 100 parts by weight of carbosilicate which functions as a binder. And at least one selected from 0.5 to 10 parts by weight of the photocatalyst powder and 0.1 to 5 parts by weight of the antimicrobial powder. The method of claim 1, Inorganic ceramic coating, characterized in that 1 to 20 parts by weight of black body powder is further added to the composition. The method of claim 2, Inorganic ceramic paint, characterized in that the black body powder consists of at least one selected from carbon, graphite, SiC, charcoal, ferrite. The method according to any one of claims 1 to 3, The far-infrared radiation material is an inorganic ceramic paint, characterized in that consisting of at least one powder selected from the group of natural minerals consisting of quartz-monzonite, gneiss and rhyolite tuff. The method according to any one of claims 1 to 3, The anion radioactive material may be tourmaline, ocher, amethyst, raw ore, bamboo charcoal, uranite, jewel, ore, obsidian, elvan, ore, ore, lava, or gemstone. Inorganic ceramic paint, characterized in that consisting of at least one powder of the heat mineral mineral containing a radioactive isotope. The method according to any one of claims 1 to 3, The antimicrobial powder is inorganic ceramic paint, characterized in that consisting of at least one selected from titanium dioxide (TiO ₂ ) and silver coated zeolite. The method according to any one of claims 1 to 3, The photocatalyst powder is made of at least one material selected from titanium dioxide (TiO ₂ ), zinc oxide (ZnO), tungsten oxide (WO₃), and an inorganic ceramic paint, characterized in that the particle size is about 1 to 100 nm.