KR20120050078A - Preparation of nano porous polymeric electro conductive nano composite filler and inorganic waterproof silicate water-born coating agent with electro-magnetic silicate shielding properties there in and a manufacturing method - Google Patents

Abstract

PURPOSE: An electromagnetic shielding water-resistant silicate-based inorganic aqueous paint and a manufacturing method thereof are provided to absorb electromagnetic wave emitted from electronic products and enhance antistatic effect. CONSTITUTION: A manufacturing method of An electromagnetic shielding water-resistant silicate-based inorganic aqueous paint comprises the following steps: forming macromolecular solution; forming conductive suspension by dispersing conductive fillers in the macromolecular solution; saponificating the conductive suspension in basic solution; filtering, washing, and desiccating the macromolecular nano-composite filler; forming a liquefied silicate inorganic binder; injecting the conductive macromolecular nano-composite into the liquid silicate inorganic binder; making paint by injecting liquid wetting agent; and controlling viscosity by adding ion exchanged water to the mixture.

Description

Electromagnetic shielding water-resistant silicate-based inorganic aqueous coating using nanoporous electrically conductive polymer nanocomposite filler and method for manufacturing the same (Introduction of nano porous polymeric electro conductive nano composite filler and inorganic waterproof silicate water-born coating agent with electro-magnetic Silicate shielding properties there in and a manufacturing method

The present invention relates to an electromagnetic shielding aqueous silicate-based inorganic coating using an electrically conductive polymer nanocomposite filler having nanoporosity, and a method of manufacturing the same.

Electromagnetic waves generated by using electronic products in daily life are known to penetrate the human body and cause lethargy, neurological diseases, headaches, visual impairment, hearing impairment, muscle disorders and pregnancy disorders. The severity has risen in recent years because of the occurrence of harmful waves.

Electromagnetic waves are a term used to refer to electromagnetic waves and electric waves from household appliances, high voltage cables, and magnets commonly used in daily life.

Electromagnetic waves from computers are typical, and these days have spread to everyday life, even to the point of VDT (visual display terminal) syndrome, and refers to symptoms such as vision loss, headache, and insomnia that many computer users feel.

Polymer materials, which are widely used as PDP TVs, PCs or cell phones, interior materials for automobiles, and various household goods, cause electromagnetic waves to be emitted and emitted as they are.

In addition, due to the electromagnetic waves generated from transportation equipment, electricity, and electronic devices are adversely affected by the peripheral devices and the human body, the impact of the peripheral devices are malfunctions of artificial organs, electronic devices and automation equipment, the human body is currently controversial It is a street, but the results are not good in various animal tests.

There is an urgent need to develop products for removing and suppressing electromagnetic waves that protect peripheral devices and the human body from such electromagnetic waves.

Therefore, in order to shield these electromagnetic streams, a method of adding metals such as Fe, Cu, and Ni, or coating an oil-based paint containing a conductive material, a method of blocking electromagnetic waves by plating copper and nickel on a polyester, and an inorganic system Inorganic building products prepared by adding 50 to 60% by weight of ferrite to materials (calcium silicate, gypsum, cement), and techniques for producing printed circuit boards by adding radio wave absorbers to epoxy are presented.

However, when metals are added to the plastics in the above method, it reflects electromagnetic waves, which is suitable for the existing electromagnetic shielding regulation as a secondary electromagnetic interference factor, but does not satisfy the current electromagnetic shielding regulation.

The method of coating an oil-based paint containing an electrically conductive material has a problem that the effect disappears when the coating surface is peeled off due to the surface coating, and the manufacturing cost increases due to the addition of the coating process. Organic compounds (VOC) are released from the unpolymerized monomer (monomer) of the polymer emulsion used in water, causing environmental pollution as well as harmful effects on the human body such as atopy. The method of blocking electromagnetic waves by plating copper and nickel on polyester may cause an electric shock risk due to conductivity.

In addition, the conventional method of manufacturing the electromagnetic wave absorber does not consider the economical efficiency and processability by adding an excess electromagnetic wave absorbing material, and it does not consider which frequency band is absorbed among the electromagnetic wave of a large number of bands, where is the electromagnetic wave absorption band? If it is unknown or if it is specified, the millimeter wave absorber with 1.5 GHz band or more is used. Therefore, its use area is limited such as mixing with building materials or adopting printed circuit board.

Liquid silicates such as sodium silicate, potassium silicate and lithium silicate are non-toxic to humans because they do not generate volatile organic compounds in aqueous solution and are relatively inexpensive compared to raw materials of paints, adhesives and special coatings, which are made of conventional petrochemical organic polymers. It is a non-flammable material that is very useful when applied as an adhesive or a coating material. It is environmentally friendly and economical, but when applied as a general paint that is cured and dried at room temperature, liquid silicate bonds or resulting coatings swell or penetrate by water. The fact that its application in places where water resistance is required is fatally impossible has led to huge obstacles in the development of paints, and it has been pointed out as a large cause that the development of silicate-based inorganic paints in Korea has not been made smoothly. part There is a situation in which the paint does not break the limit that is slightly applied for modifying the characteristics.

The present invention is a conventional electromagnetic shielding filler used to solve the above problems solve the defect that the water-based silicate-based inorganic binder paints fatal weakness at the same time to penetrate into the human body, lethargy, nerve disease, headache, visual impairment They should be able to easily block the electromagnetic waves that cause hearing, hearing, muscle and pregnancy problems.

The present invention for solving the above problems, the vinyl acetate content of 10 to 50% by weight of ethylene-vinylacetate copolymer, polyvinylacetate or vinyl acetate-acrylic acid copolymer, or acrylamide-vinylacetate copolymer A polymer solution forming step of dissolving the polymer having the vinyl acetate group in a polar solvent such as toluene, xylene, methylene chloride, ethylene chloride, chloroformmethylethyl ketone or methyl isobutane ketone; A conductive suspension forming step of dispersing a conductive filler having a nano size of carbon nanotubes, carbon black, graphite, graphene, or carbon fibers in the polymer solution; In the conductive suspension forming step, the conductive filler having a nano size is dispersed in a low-cost alcohol such as methyl alcohol, ethyl alcohol, propyl alcohol or butanol or water, and a basic solution of strong base such as sodium hydroxide, potassium hydroxide or calcium hydroxide is dissolved. A safflowering step added dropwise to the solution while stirring at high speed; A particle forming step of filtering, washing, and drying the electrically conductive polymer nanocomposite filler having the nanoporosity; After adding liquid silicate and ion-exchanged water and stirring until it becomes a uniform liquid, alkyl which is methyltrimethoxysilane, methyltriethoxysilane, triethoxyvinylsilane, diphenyldimethoxysilane or triethoxysilane After the addition of the alkoxysilane, the mixture was stirred for about 10 minutes or more until fully hydrolyzed, and then the stirring speed was increased to 2000 RPM, and the alumina (Al ₂ O _3, ), titanium oxide (TiO ₂ ), zirconium oxide (ZrO ₂ ) or silica ( SiO ₂ ) Colloidal dispersion, a metal oxide colloidal solution with a colloidal particle size of 40-180 nm, a curing agent, natural tuff, diatomaceous earth, volcanic ash, and artificial pozzolanic metakaolin, fly ash, and silica gel fuzolan. Forming a liquid silicate inorganic binder by adding and stirring to form a liquid silicate inorganic binder; 50-100% by weight of an electrically conductive polymer nanocomposite filler having nanoporosity was added to 100% by weight of the liquid silicate inorganic binder obtained in the liquid silicate inorganic binder forming step, followed by stirring and milling at 1000 RPM for 30 minutes or more to check 50 or less with a particle size meter. After adjusting the speed to 300RPM by adding a liquid wetting agent and a paint step of stirring for 10 minutes or more; By adding ion-exchanged water to the mixture to adjust the viscosity to commercialize the packaging step, 25-50% by weight of the electrically conductive polymer nanocomposite filler having nanoporosity, 24.5-37% by weight of liquid silicate, 12 ~ Nano having a composition ratio of 17 wt%, alkyl alkoxysilane 0.5-2.5 wt%, metal oxide colloidal solution 2.5-7.5 wt%, curing agent 1.5-2.5 wt%, pozzolan 1-5.5 wt% and liquid wetting agent 0.2-2.5 wt% Electromagnetic shielding aqueous silicate-based inorganic paints are prepared using an electrically conductive polymer nanocomposite filler having porosity.

Here, the nano-sized conductive filler is 0.1 ~ 100nm particle size, the conductive suspension is 100% by weight of the polymer solution 1-20% by weight carbon nanotube, 20-50% by weight black carbon, graphite 20 It is obtained by dispersing -40 weight%, 20-30 weight% of graphene, or 15-30 weight% of carbon fibers, and basicity of the said basic solution shall be pH 9-14.

As described above, the polymer nanocomposite filler according to the present invention is prepared by the method of preparing the electroconductive polymer nanocomposite filler having nanoporosity and the electromagnetic shielding aqueous silicate-based inorganic paint using the same. It contains and hydroxyl groups (-OH) and is easily dispersed in water, and has a great effect on antistatic as well as shielding and absorbing electromagnetic waves emitted from existing electronic products due to high electrical conductivity.

In addition, the hydroxyl group can be easily crosslinked by chemical crosslinking method, and by applying a binder composed mainly of liquid potassium silicate and liquid lithium silicate by the hydrophobic polyethylene region, it is generated as the curing process and time of the conventional building finishing materials have elapsed. Problems such as surface contamination due to cracks and moisture can be improved, and volatile organic compounds harmful to the human body are not generated due to the use of aqueous binders, thus providing a new ecological and health-friendly living environment to the human body, as well as after curing of the paint. The formed coating layer can ensure excellent durability, and is composed of an inorganic type, and the surface after curing of the paint becomes hydrophilic, so it is excellent in preventing contamination such as fine dust due to static electricity, and can be easily applied by brushing or spraying. Have an advantage.

1 is an exemplary embodiment of the present invention.
Figure 2 is an electron micrograph of a polymer nanocomposite filler having nanoporosity of the present invention.
3 is a nanoporous electron micrograph of the polymer nanocomposite filler having nanoporosity of the present invention.
Figure 4 is a graph showing that the electrical resistance is reduced according to the conductive filler of the present invention.

In preparing an electromagnetic shielding aqueous silicate-based inorganic paint using the electrically conductive polymer nanocomposite filler having nanoporosity of the present invention, an ethylene-vinylacetate copolymer having a vinyl acetate content of 10 to 50% by weight, polyvinylacetate or vinyl A high molecular polymer having a vinyl acetate group composed of an acetate-acrylic acid copolymer or an acrylamide-vinylacetate copolymer is added to a polar solvent such as toluene, xylene, methylene chloride, ethylene chloride, chloroformmethylethyl ketone or methyl isobutane ketone. Forming a polymer solution to dissolve; A conductive suspension forming step of dispersing a conductive filler having a nano size of carbon nanotubes, carbon black, graphite, graphene, or carbon fibers in the polymer solution; In the conductive suspension forming step, the conductive filler having a nano size is dispersed in a low-cost alcohol such as methyl alcohol, ethyl alcohol, propyl alcohol or butanol or water, and a basic solution of strong base such as sodium hydroxide, potassium hydroxide or calcium hydroxide is dissolved. A safflowering step added dropwise to the solution while stirring at high speed; A particle forming step of filtering, washing, and drying the electrically conductive polymer nanocomposite filler having the nanoporosity; After adding liquid silicate and ion-exchanged water and stirring until it becomes a uniform liquid, alkyl which is methyltrimethoxysilane, methyltriethoxysilane, triethoxyvinylsilane, diphenyldimethoxysilane or triethoxysilane After the addition of alkoxysilane, the mixture was stirred for about 10 minutes or more until it was completely hydrolyzed, and then the stirring speed was increased to 2000 RPM, and the alumina (Al ₂ O _3, ), titanium oxide (TiO ₂ ), zirconium oxide (ZrO ₂ ) or silica ( SiO ₂ ) Colloidal dispersion, a metal oxide colloidal solution with a colloidal particle size of 40-180 nm, a curing agent, natural tuff, diatomaceous earth, volcanic ash, and artificial pozzolanic metakaolin, fly ash, and silica gel fuzolan. Forming a liquid silicate inorganic binder by adding and stirring to form a liquid silicate inorganic binder; 50-100% by weight of an electrically conductive polymer nanocomposite filler having nanoporosity was added to 100% by weight of the liquid silicate inorganic binder obtained in the liquid silicate inorganic binder forming step, followed by stirring and milling at 1000 RPM for 30 minutes or more to check 50 or less with a particle size meter. After adjusting the speed to 300RPM by adding a liquid wetting agent and a paint step of stirring for 10 minutes or more; By adding ion-exchanged water to the mixture to adjust the viscosity to commercialize the packaging step, 25-50% by weight of the electrically conductive polymer nanocomposite filler having nanoporosity, 24.5-37% by weight of liquid silicate, 12 ~ Nano having a composition ratio of 17 wt%, alkyl alkoxysilane 0.5-2.5 wt%, metal oxide colloidal solution 2.5-7.5 wt%, curing agent 1.5-2.5 wt%, pozzolan 1-5.5 wt% and liquid wetting agent 0.2-2.5 wt% Electromagnetic shielding aqueous silicate-based inorganic paints are prepared using an electrically conductive polymer nanocomposite filler having porosity.

Here, the nano-sized conductive filler is 0.1 ~ 100nm particle size, the conductive suspension is 100% by weight of the polymer solution 1-20% by weight carbon nanotube, 20-50% by weight black carbon, graphite 20 It is obtained by dispersing -40 weight%, 20-30 weight% of graphene, or 15-30 weight% of carbon fibers, and basicity of the said basic solution shall be pH 9-14.

The polymer having a vinyl acetate group is an ethylene-vinylacetate copolymer, a polyvinylacetate, a vinyl acetate-acrylic acid copolymer, an acrylamide-vinylacetate copolymer, and a polymer having a vinyl acetate content of 10 to 50% by weight. Do.

The nano-sized conductive filler is used for tin sonanotubes [single-walled carbon nanotubes and multi-walled carbon nanotubes], carbon black, graphite, graphene or carbon fiber. And having a particle size of 1 to 100 nm (0.1 to 10).

The polymer solution is produced by dissolving a polymer having a vinyl acetate group in a polar solvent at a concentration of 0.01 to 20% by weight. If the solution concentration is less than 0.01% by weight, nanoporosity is not produced. Can't.

The conductive suspension is 1 to 20% by weight of carbon nanotube, 20 to 50% by weight of carbon black, 20 to 40% by weight of graphite, 20 to 30% by weight of graphene or 15 to 30% of carbon fiber to 100% by weight of the polymer solution. Weight percent is suitable.

As for the basicity of the said basic solution, pH 9-14 is suitable. If the pH is less than 9, the saponification reaction is delayed and no granular particles are produced.

Stirring speed during the saponification reaction depends on the size of the particles to be produced and is adjusted to 1,000 ~ 3,000 RPM.

In the liquid silicate, in the case of liquid sodium silicate, the molar ratio of SiO ₂ / Na ₂ O is 2.8 to 3.4, but the molar ratio of liquid potassium silicate SiO ₂ / K ₂ O is preferably 3.2 to 3.6, and 22 to 27 wt% Is used.

2.5 to 10% by weight of liquid lithium silicate, which plays a role of providing excellent waterproofing effect by improving curing reactivity and increasing surface strength, is added.

The alkylalkoxysilane is hydrolyzed to induce a reaction with the metal oxide colloidal solution and increases the surface strength of the inorganic coating film of the final binder, thereby providing an excellent waterproofing effect and facilitating the mixing of the pigment with the inorganic binder as a paint. Add 0.5 to 2.5% by weight as an aid.

If the amount is less than 0.5 wt%, the reactivity between the metal oxide colloidal drops, and if it is more than 2.5 wt%, the surface strength is lower after curing of the binder.

The colloidal aqueous solution of the metal oxide colloidal particles having a colloidal particle size of 40-180 nm is suitable as an alumina (Al ₂ O _3, ), titanium oxide (TiO ₂ ), zirconium oxide (ZrO ₂ ) or silica (SiO ₂ ) colloidal dispersion. To control the viscosity of the inorganic binder and give long-term stability, 2.5 to 7.5% by weight is used.

If it is less than 2.5% by weight, the long-term stability is inferior. If it is more than 7.5% by weight, it becomes high viscosity, making it difficult to stir.

The curing agent is 1.5 to 2.5% by weight of magnesium oxide (MgO), calcium oxide (CaO), barium oxide (BaO) or zinc oxide (ZnO) is used and easily affinity with the silicate to improve the hardness of the coating film, especially the atmosphere Easily collects the carbon dioxide in the water, which helps to dry the coating quickly, and helps to remove moisture completely. When applied to metal surfaces such as steel, zinc film is formed to prevent corrosion of the coating by moisture, that is, to prevent corrosion and overall water resistance. Let's go.

The pozzolanic can be used natural tuff, diatomaceous earth, volcanic ash and artificial pozzolanic metakaolin, fly ash, silica gel fume, etc., 1.0 to 5.5% by weight is added to the pozzolanic reaction to improve the durability and seawater resistance, chemical resistance of the film And impart anion release, antifungal and antibacterial properties.

The liquid wetting agent is composed of a liquid antifoaming agent and a dispersant to add 0.5 to 5% by weight, when less than 0.5% by weight is less dispersibility and bubbles are generated, when the 5% by weight or more the coating film is less dense.

The ion-exchanged water is used 12 to 17% by weight for viscosity control.

The preparation of an electrically conductive polymer nanocomposite filler having nanoporosity according to the present invention and a method of manufacturing an electromagnetic shielding aqueous silicate-based inorganic paint using the same will be described in detail, and examples thereof will be described below.

Hereinafter, the present invention will be described in more detail with reference to examples.

However, the scope of the present invention is not limited only to the following examples.

The paints were manufactured by mixing the component of Table 1 by the manufacturing method of the following process using a mixer at each compounding ratio.

The ethylene-vinylacetate copolymer was dissolved in toluene until homogeneous, and carbon (1 wt%), nanotubes (20 wt%), carbon black (50 wt%), graphite (50 wt%), graphene (30 % By weight), carbon suspension (25% by weight) was formed to form a suspension, and sodium hydroxide / ethyl alcohol basic solution having a pH of 13 was added dropwise with stirring at 2000 RPM, followed by filtration and washing of particles obtained by stirring for 24 hours. Dry in an oven to form the electrically conductive polymer nanocomposite filler.

Put liquid potassium silicate and liquid lithium silicate into a common mill mixing tank, stir until it becomes a uniform liquid phase, add methyltriethoxysilane and stir at least about 10 minutes until it is completely hydrolyzed. Into 100 rpm by weight of alumina sol, zinc oxide, and pozzolane by sequentially adding up to 2000 RPM and adding 50 ~ 100% by weight of electrically conductive polymer nanocomposite filler having nanoporosity under the operation of dust control equipment. After stirring for 30 minutes or more and checking 50 or less with a particle size meter, after adjusting the speed to 300 RPM, a liquid humectant was added and stirred for 10 minutes or more to complete the preparation.

The performance of the coating thus produced is evaluated according to various functional test methods.

Apply paint on the surface of EGI steel plate with width of 150mm, length of 75mm, and thickness of 0.8mm with brush or coating with airless spray to make film thickness of 75 ± 5㎛ respectively, and dry and harden at room temperature, then washability, pencil hardness, stain resistance, Base resistance, salt water resistance, dryness and the like were measured, and the physical properties of the paints were summarized in <Table 2>.

(1) Wash resistance test Reciprocating wear recovery test according to the emulsion synthetic resin internal standard of KS M 5000 3351.

(2) Pencil hardness measurement Pencil hardness was measured using a normal pencil hardness tester (manufactured by Misubishi).

(3) Pollution resistance measurement Test of soot generated from burning petroleum carbides on the surface of coating film, and then left for 1 day, after removing contaminants on the specimen with water flowing at room temperature.

(4) Measure dry drying time, solidification drying time, and complete drying time, respectively, but touch drying time measures the time when it is not buried by touching the surface by hand, and solidification drying time can be rubbed by hand. Measure the time when it doesn't come out, and complete dry time is measured by rubbing the surface with cotton soaked in water more than 200 times.

(5) Antibacterial test, Escherichia coli ATCC 25922 and Staphylococcus aureus ATCC 25923 were incubated for 20 hours in Nutrient Broth (NB, Difco).

After incubation, the cells were diluted in Phosphate Sulfate Buffer (PSB), and the OD values of the strains were diluted to 0.8 for S. aureus ATCC25923 and 0.65 for E. coli ATCC 25922.

Samples were sterilized for 1 hour in a UV lamp. 1 g of the sterilized sample was placed in a flask containing 20 NB, and the diluted strain 100 was inoculated. Inoculated strains were incubated in a shaking incubator at 37 for 24 hours.

The cultured strain was inoculated by step dilution in Nutruent agar, and the bacteria count was measured after 24 hours.

(6) Antifungal test, Aspergillus niger ATCC 6275 and Penicillium funiculosum ATCC 11797 strains were inoculated in a Potato Dextrose Agar (PDA, Difco) slope medium and incubated for 28 to one week.

Sterile distilled water was added to the incubation medium containing the cultured bacteria, and 5 ml of the incubation medium in which the bacteria were grown, and then spores were scraped from the surface of the culture medium.

After the scraped spores were transferred to the e-tube and diluted again to 10 ^-2 , the number of spores was measured using a hemocytometer (measured 5 times in a 4 × 4 cell). Dilutions were made so that the number of spores in the slope medium was 1.2 × 10 ⁶ .

The spore suspension diluted to 1.0 × 1.0 ⁶ was inoculated onto the medium by PDA 500 and inoculated into the medium evenly with a sterile swab, and inoculated with a hole 3 cm in diameter in the middle of the medium.

UV sterilized paint was placed in the hole for one hour. After incubation for one week in the incubator, the halo zone is measured with vernier calipers.

As shown in <Table 1> and <Table 2>, the aqueous electromagnetic shielding paint to which the silicate crab inorganic binder of the embodiment of the present invention is applied has excellent surface strength, wash resistance, fouling resistance, and adhesiveness to prevent cracking of the coating film during curing. In addition to preventing, anion release, electromagnetic shielding, antibacterial, anti-bacterial, non-combustible and volatile organic compound emissions can be minimized.

Figure 2 shows an electron micrograph of the polymer nanocomposite filler having nanoporosity of the present invention can be confirmed that the particle size of the fine powder of the particle size of about 5 ~ 20.

Figure 3 shows a nanoporous electron micrograph of the polymer nanocomposite filler having a nanoporous of the present invention, Figure 4 is an illustration showing the critical concentration of the conductive filler of the present invention carbon nanotubes (MWNT) is carbon black (CB It can be seen that it has higher conductivity than) or graphite (GP).

           Table 1 Examples of paint compositions and preparation methods

               <Table 2> Measurement result of each experiment according to the experiment example

The present invention has been filed as a result of the development of "Silicate-based inorganic aqueous binder", which is a technical development task of the SMEs technological innovation development project implemented by the Small and Medium Business Administration.

In the present invention, the final paint prepared by using an inorganic binder having various properties, including water resistance, has excellent paintability on various materials in the entire industry, and can secure overall physical and chemical properties, so that the home as well as the industrial structure It can be widely used in buildings, civil engineering, marine, shipbuilding, etc.

Claims (5)

Ethylene-vinylacetate copolymers having a vinyl acetate content of 10 to 50% by weight, polyvinylacetate or vinylacetate-acrylic acid copolymers, or polymer polymers having a vinylacetate group of an acrylamide-vinylacetate copolymer; A polymer solution forming step of dissolving in a polar solvent such as ethylene, methylene chloride, ethylene chloride, chloroformmethylethyl ketone or methyl isobutane ketone;
A conductive suspension forming step of dispersing a conductive filler having a nano size of carbon nanotubes, carbon black, graphite, graphene, or carbon fibers in the polymer solution;
In the conductive suspension forming step, the conductive filler having a nano size is dispersed in a low-cost alcohol such as methyl alcohol, ethyl alcohol, propyl alcohol or butanol or water, and a basic solution of strong base such as sodium hydroxide, potassium hydroxide or calcium hydroxide is dissolved. A safflowering step added dropwise to the solution while stirring at high speed;
A particle forming step of filtering, washing, and drying the electrically conductive polymer nanocomposite filler having the nanoporosity;
After adding liquid silicate and ion-exchanged water and stirring until it becomes a uniform liquid, alkyl which is methyltrimethoxysilane, methyltriethoxysilane, triethoxyvinylsilane, diphenyldimethoxysilane or triethoxysilane After the addition of alkoxysilane, the mixture was stirred for about 10 minutes or more until it was completely hydrolyzed, and then the stirring speed was increased to 2000 RPM, and the alumina (Al ₂ O _3, ), titanium oxide (TiO ₂ ), zirconium oxide (ZrO ₂ ) or silica ( SiO ₂ ) Colloidal dispersion, a metal oxide colloidal solution with a colloidal particle size of 40 to 180 nm, a hardener, natural tuff, diatomaceous earth, volcanic ash, and artificial pozzolane metakaolin, fly ash, and silica gel fuzolan. Forming a liquid silicate inorganic binder by adding and stirring to form a liquid silicate inorganic binder;
50-100% by weight of an electrically conductive polymer nanocomposite filler having nanoporosity was added to 100% by weight of the liquid silicate inorganic binder obtained in the liquid silicate inorganic binder forming step, followed by stirring and milling at 1000 RPM for 30 minutes or more to check 50 or less with a particle size meter. After adjusting the speed to 300RPM by adding a liquid wetting agent and a paint step of stirring for 10 minutes or more;
Electromagnetic shielding aqueous silicate-based inorganic paint production method using an electrically conductive polymer nanocomposite filler having nanoporosity, characterized in that the product is added to the mixture by ion-exchanged water to control the viscosity of the product.
25-50 wt% of electrically conductive polymer nanocomposite filler with nanoporosity, 24.5-37 wt% of liquid silicate, 12-17 wt% of ion-exchanged water, 0.5-2.5 wt% of alkylalkoxysilane, 2.5-7.5 colloidal aqueous metal oxide solution Electromagnetic shielding aqueous silicate-based inorganic paint using an electrically conductive polymer nanocomposite filler having nanoporosity, characterized in that the composition is composed of weight%, curing agent 1.5-2.5 weight%, pozzolane 1-5.5 weight% and liquid wetting agent 0.2-2.5 weight%. .
The method of claim 1,
The nano-sized conductive filler is an electromagnetic shielding aqueous silicate-based inorganic paint manufacturing method using an electrically conductive polymer nanocomposite filler having a nanoporous, characterized in that the particle size of 0.1 ~ 100nm.
The method of claim 1,
The conductive suspension is 1 to 20% by weight of carbon nanotube, 20 to 50% by weight of carbon black, 20 to 40% by weight of graphite, 20 to 30% by weight of graphene or 15 to 30% of carbon fiber to 100% by weight of the polymer solution. A method for producing an electromagnetic shielding aqueous silicate-based inorganic paint using an electrically conductive polymer nanocomposite filler having nanoporosity, characterized in that the weight percent is dispersed.
The method of claim 1,
Basicity of the basic solution is an electromagnetic shielding aqueous silicate-based inorganic paint production method using an electrically conductive polymer nanocomposite filler having nanoporosity, characterized in that pH 9 ~ 14.

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