KR102582481B1 - Electromagnetic wave shielding tape and its manufacturing method - Google Patents

Abstract

The present invention relates to fabric; An adhesive layer formed on one side of the fabric; and a coating layer formed on the other side of the fabric, wherein the fabric is a polyester fabric treated with nickel-copper-nickel plating, and the adhesive layer and the coating layer include a conductive additive.

Description

Electromagnetic wave shielding tape and its manufacturing method {Electromagnetic wave shielding tape and its manufacturing method}

The present invention relates to an electromagnetic wave shielding tape and a method of manufacturing the same.

Due to the rapid development of the electronic information and communication industry, modern people are always in close contact with electronic communication products such as TVs, mobile phones, and computers, and the problem of electromagnetic wave hazards generated from such electronic communication products continues both domestically and internationally. In particular, electromagnetic waves are a type of energy flow composed of electricity and magnetism, and they always exist wherever electricity flows. The nature of electromagnetic waves is that they travel straight like light, reflect, and even penetrate walls, so our daily lives are affected by the harmful effects of these electromagnetic waves. What is even more problematic is that we are defenselessly exposed and cannot easily recognize the harmful effects.

Symptoms that electromagnetic waves can cause to the human body include drowsiness, insomnia, nervousness, headache, dizziness, skin aging, decrease in hormones such as melatonin, changes in biological rhythm, muscle weakness, functional changes in cells and tissues, changes in the immune system, There are changes in the body's brain activity and heart rate, and diseases are known to cause leukemia in children, destruction of male reproductive function, miscarriage in pregnant women and birth defects, acceleration of cancer cell proliferation, lens abnormalities, Alzheimer's disease, and VDT syndrome.

Accordingly, looking at foreign technologies to prevent the harmful effects of electromagnetic waves as described above, research on the biological effects caused by radio frequency (RF) electromagnetic fields has been actively conducted in advanced countries over a long period of time. For example, as the first research on electromagnetic wave shielding, Zipperling Kessler of Germany developed a technology to disperse polymer materials from Allied Signall of the United States into PVC and commercialized polymer blend electromagnetic shielding materials. IBM in the U.S. also developed electronic shielding materials using polymer blends, and currently, multinational companies such as IBM are conducting research using materials such as nanometals. And in the case of Japan, initially, products manufactured using conductive materials were the mainstream, but recently, some products manufactured using electromagnetic wave shielding materials have been released into the market, and in particular, Hitachi Electric has been producing products such as wallpaper and partitions. A sheet using electromagnetic wave shielding water is being developed for this purpose.

In addition, looking at the technological trends of electromagnetic wave shielding films developed domestically as a technology to block electromagnetic waves, Yeongnam Textile used copper wire as an electromagnetic wave shielding material and developed a core-shaped spun yarn with the core completely covered with cotton fibers. , it is used in a way that the copper wire is not exposed to the outside at all. In the case of other domestic companies, they developed electromagnetic wave shielding paint using inorganic materials for construction and began mass production. The electromagnetic wave shielding rate is 60% superior to domestic products and 30% superior to products from advanced countries, and its performance has been proven in areas of application, durability, and economic feasibility. Sometimes it happens. Daeju Electronic Materials developed silver flake, a raw material for electromagnetic wave shielding materials, and increased price competitiveness. Changseong Enterprises plans to increase sales by developing materials with an absorbing function in addition to electromagnetic wave shielding, and Cheil Industries plans to use electromagnetic waves emitted from mobile phones, etc. Electromagnetic wave shielding material (EMS), a material that blocks electromagnetic waves, was developed for the first time in Korea and began full-scale mass production. Electromagnetic wave shielding material is a cutting-edge material manufactured to block electromagnetic waves by coating the inside of electronic device cases such as mobile phones, laptop PCs, and TVs. Additionally, the company is currently developing and testing electromagnetic wave shielding materials for cathode ray tubes.

Meanwhile, looking at this film manufacturing process, a large amount of toluene is used as a solvent when performing oil-based coating. Toluene is a solvent containing a benzene ring, an aromatic hydrocarbon, and its industrial use is restricted due to its high carcinogenic potential and high toxicity. In particular, in developed countries that emphasize environmental aspects, regulations on its use are becoming stronger.

The present invention was developed to solve the above problems, and the purpose of the present invention is to form a coating layer through oil-based coating without using toluene as a solvent, and to provide electromagnetic wave shielding that exhibits excellent electromagnetic wave shielding function even when such oil-based coating is performed. Shielding tape is provided.

The object of the present invention is not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

In order to achieve the above object, the present invention

fabric;

An adhesive layer formed on one side of the fabric; and

It includes a coating layer formed on the other side of the fabric,

The fabric is a polyester fabric treated with nickel-copper-nickel plating,

An electromagnetic wave shielding tape is provided wherein the adhesive layer and the coating layer contain a conductive additive.

In addition, the electronic shielding tape includes a protective layer formed on the coating layer,

The fabric is,

Etching a polyester fabric using an etching composition containing 8-12 parts by weight of sodium hydroxide, 0.3-3 parts by weight of octyldodeceth-16, and 87-91 parts by weight of water;

The etched polyester fabric was mixed with 12-16 parts by weight of sodium gluconate, 3-7 parts by weight of 1,3,5-triazine, 0.3-3 parts by weight of sodium polyoxyethylene alkylaryl sulfate, and 78-82 parts by weight of water. Degreasing using a degreasing composition;

Preliminary catalyst treatment by immersing the degreased polyester fabric in hydrochloric acid at a concentration of 7-11% by weight;

Catalyzing the pre-catalyzed polyester fabric by immersing it in a 1:1 mixed solution containing 0.4-0.6% by weight of palladium chloride and 7-11% by weight of hydrochloric acid;

The catalyst-treated polyester fabric was treated with a pH 4.5-5.5 agent containing 10-14 g/l nickel sulfate, 6-10 g/l sodium hypophosphite, 8-12 g/l acetic acid, and 13-17 g/l glycine. 1 Forming a first nickel plating layer by immersing in a nickel plating solution and performing electroless nickel plating at a temperature of 70-80°C;

The polyester fabric on which the first nickel plating layer was formed was mixed with 4-8 g/l cupric sulfate, 6-10 g/l formaldehyde, 18-22 g/l ethylenediaminetetraacetic acid, and 4-8 g/l sodium hydroxide. Forming a copper plating layer by immersing in a copper plating solution containing pH 9-11 and performing electroless copper plating at a temperature of 40-50°C; and

The polyester fabric with the copper plating layer formed has a pH of 4.5-5.5 containing 10-14 g/l of nickel sulfate, 6-10 g/l of sodium hypophosphite, 8-12 g/l of acetic acid, and 13-17 g/l of glycine. It is manufactured by performing the step of forming a second nickel plating layer by immersing it in a second nickel plating solution and performing electroless nickel plating at a temperature of 70-80°C,

The adhesive layer includes 28-32 parts by weight of the first acrylic polymer resin, 13-17 parts by weight of the second acrylic polymer resin, 13-17 parts by weight of the conductive additive, 8-12 parts by weight of the inorganic additive, and 1-5 parts by weight of the natural complex extract. , It is formed of a composition for forming an adhesive layer containing 1-5 parts by weight of carbon black, 0.5-4 parts by weight of sodium metaarsenite, and 20-24 parts by weight of water,

The coating layer contains 43-47 parts by weight of silicone-modified urethane-based resin, 13-17 parts by weight of conductive additive, 8-12 parts by weight of inorganic additive, 1-5 parts by weight of natural complex extract, 1-5 parts by weight of carbon black, and 0.5 parts by weight of sodium metaarsenite. It is formed of a composition for forming a coating layer containing -4 parts by weight and 20-24 parts by weight of methyl ethyl ketone,

The first acrylic polymer resin has a weight average molecular weight of 120,000-150,000 and includes 40-44 parts by weight of methyl methacrylate monomer units, 25-29 parts by weight of 2-ethylhexyl acrylate monomer units, and 29-33 parts by weight of acrylic acid monomer units. It is a copolymer that

The second acrylic polymer resin has a weight average molecular weight of 80,000-100,000 and contains 28-32 parts by weight of ethyl methacrylate monomer units, 28-32 parts by weight of 2-ethylhexyl acrylate monomer units, and 2-hydroxyethyl methacrylate monomer. a second copolymer comprising 38-42 parts by weight of units,

The conductive additive includes 48-52 parts by weight of aluminum powder, 28-32 parts by weight of silver powder, and 18-22 parts by weight of nickel powder,

The inorganic additive includes 48-52 parts by weight of tourmaline powder, 28-32 parts by weight of mica stone powder, and 18-22 parts by weight of porous γ-alumina,

The natural complex extract includes 32-36 parts by weight of lotus leaf extract, 25-29 parts by weight of Yulpi extract, 19-23 parts by weight of persimmon leaf extract, and 16-20 parts by weight of green tea extract,

The protective layer consists of 46-50 parts by weight of the first urethane-based polymer resin, 22-26 parts by weight of the second urethane-based polymer resin, 1-5 parts by weight of potassium rosin acid salt, 1-5 parts by weight of an inorganic antibacterial agent, and 1-5 parts by weight of a functional composition. It is formed of a composition for forming a protective layer containing 0.5-4 parts by weight of a cellulose-based thickener, 0.5-4 parts by weight of a rosin ester resin, 0.1-2 parts by weight of an organotin catalyst, and 12-16 parts by weight of a carbon fiber dispersion,

The first urethane-based polymer resin is prepared by reacting polyether polyol, methylene diphenyl diisocyanate, and dibutyltin dilaurate by stirring for 3-5 hours at a temperature of 70-80° C. under a nitrogen atmosphere to prepare a reaction product; and adding aminotrialkoxysilane to the reaction product and reacting at a temperature of 60-70°C.

The second urethane-based polymer resin is polyurethane acrylate,

The inorganic antibacterial agent is a complex inorganic antibacterial agent of calcium oxide and zeolite substituted with metal ions,

The functional composition includes 33-37 parts by weight of tourmaline powder, 28-32 parts by weight of illite powder, 13-17 parts by weight of amphibole powder, 13-17 parts by weight of biotite powder, and 38-42 parts by weight of silane surface-treated antimony trioxide (Sb2O3). Contains a weight part,

The carbon fiber dispersion is characterized in that it contains 33-37 parts by weight of carbon fiber and 63-67 parts by weight of distilled water containing tourmaline extract, illite extract, hornblende extract, and biotite extract.

In addition, the present invention

Manufacturing a nickel-copper-nickel plated polyester fabric;

On one side of the fabric, 28-32 parts by weight of a first acrylic polymer resin, 13-17 parts by weight of a second acrylic polymer resin, 13-17 parts by weight of a conductive additive, 8-12 parts by weight of an inorganic additive, and 1-5 parts by weight of a natural complex extract. , forming an adhesive layer by applying a composition for forming an adhesive layer containing 1-5 parts by weight of carbon black, 0.5-4 parts by weight of sodium metaarsenite, and 20-24 parts by weight of water;

On the other side of the fabric, 43-47 parts by weight of silicone-modified urethane resin, 13-17 parts by weight of conductive additive, 8-12 parts by weight of inorganic additive, 1-5 parts by weight of natural complex extract, 1-5 parts by weight of carbon black, sodium metaarsenite. Forming a coating layer by applying a composition for forming a coating layer containing 0.5-4 parts by weight and 20-24 parts by weight of methyl ethyl ketone; and

On the coating layer, 46-50 parts by weight of the first urethane-based polymer resin, 22-26 parts by weight of the second urethane-based polymer resin, 1-5 parts by weight of potassium rosin acid salt, 1-5 parts by weight of an inorganic antibacterial agent, and 1-5 parts by weight of a functional composition. A protective layer is formed by applying a composition for forming a protective layer containing 0.5-4 parts by weight of a cellulose-based thickener, 0.5-4 parts by weight of a rosin ester resin, 0.1-2 parts by weight of an organotin catalyst, and 12-16 parts by weight of a carbon fiber dispersion. Including a forming step;

In the step of manufacturing the nickel-copper-nickel plated polyester fabric, the polyester fabric is mixed with 8-12 parts by weight of sodium hydroxide, 0.3-3 parts by weight of octyldodeceth-16, and 87-91 parts by weight of water. etching using an etching composition containing one part by weight; The etched polyester fabric was mixed with 12-16 parts by weight of sodium gluconate, 3-7 parts by weight of 1,3,5-triazine, 0.3-3 parts by weight of sodium polyoxyethylene alkylaryl sulfate, and 78-82 parts by weight of water. Degreasing using a degreasing composition; Preliminary catalyst treatment by immersing the degreased polyester fabric in hydrochloric acid at a concentration of 7-11% by weight; Catalyzing the pre-catalyzed polyester fabric by immersing it in a 1:1 mixed solution containing 0.4-0.6% by weight of palladium chloride and 7-11% by weight of hydrochloric acid; The catalyst-treated polyester fabric was treated with a pH 4.5-5.5 agent containing 10-14 g/l nickel sulfate, 6-10 g/l sodium hypophosphite, 8-12 g/l acetic acid, and 13-17 g/l glycine. 1 Forming a first nickel plating layer by immersing in a nickel plating solution and performing electroless nickel plating at a temperature of 70-80°C; The polyester fabric on which the first nickel plating layer was formed was mixed with 4-8 g/l cupric sulfate, 6-10 g/l formaldehyde, 18-22 g/l ethylenediaminetetraacetic acid, and 4-8 g/l sodium hydroxide. Forming a copper plating layer by immersing in a copper plating solution containing pH 9-11 and performing electroless copper plating at a temperature of 40-50°C; And the polyester fabric on which the copper plating layer was formed was washed at pH 4.5-5.5 containing 10-14 g/l of nickel sulfate, 6-10 g/l of sodium hypophosphite, 8-12 g/l of acetic acid, and 13-17 g/l of glycine. It includes forming a second nickel plating layer by immersing it in a second nickel plating solution and performing electroless nickel plating at a temperature of 70-80°C,

The first acrylic polymer resin is prepared by adding a catalyst to 40-44 parts by weight of methyl methacrylate monomer, 25-29 parts by weight of 2-ethylhexyl acrylate monomer, and 29-33 parts by weight of acrylic acid monomer and reacting at a temperature of 90°C. It is manufactured by reacting at a temperature of 88-92℃,

The second acrylic polymer resin is prepared by adding a catalyst of 28-32 parts by weight of ethyl methacrylate monomer, 28-32 parts by weight of 2-ethylhexyl acrylate monomer, and 38-42 parts by weight of 2-hydroxyethyl methacrylate monomer at 90°C. It is manufactured by reacting at a temperature of 88-92°C,

The conductive additive is prepared by mixing 48-52 parts by weight of aluminum powder, 28-32 parts by weight of silver powder, and 18-22 parts by weight of nickel powder,

The inorganic additive is prepared by mixing 48-52 parts by weight of tourmaline powder, 28-32 parts by weight of mica stone powder, and 18-22 parts by weight of porous γ-alumina,

The natural complex extract includes washing lotus leaves, yulpi, persimmon leaves, and green tea, respectively, freeze-drying, and then grinding them in a blender to prepare powder; Preparing a first mixture by mixing 32-36 parts by weight of prepared lotus leaf powder, 25-29 parts by weight of Yulpi powder, 19-23 parts by weight of persimmon leaf powder, and 16-20 parts by weight of green tea powder; And the first mixture was mixed with a mixed solvent of acetone and ethanol in a volume ratio of 1:1 at a weight ratio of 1:5, extracted at a temperature of 30°C for 24 hours, filtered through filter paper, and then concentrated in a concentrator at 55°C. It is prepared by performing the steps of concentrating under reduced pressure and freeze-drying at ℃,

The first urethane-based polymer resin is prepared by reacting polyether polyol, methylene diphenyl diisocyanate, and dibutyltin dilaurate by stirring for 3-5 hours at a temperature of 70-80° C. under a nitrogen atmosphere to prepare a reaction product; and adding aminotrialkoxysilane to the reaction product and reacting at a temperature of 60-70°C.

The second urethane-based polymer resin is polyurethane acrylate,

The inorganic antibacterial agent includes the steps of mixing calcium oxide and zeolite in a weight ratio of 1:1 to prepare a second mixture; Preparing a third mixture by mixing 90-110 parts by weight of the second mixture and 290-310 parts by weight of distilled water and stirring for 25-35 minutes at a temperature of 45-55 ° C.; reacting by adding an aqueous solution of phosphoric acid with a concentration of 10% by weight to the third mixture until the pH reaches 8.3; Obtaining the product produced by the reaction by dehydrating and hot air drying; Sintering the product in an oxidizing atmosphere and at a temperature of 830-870°C for 9-11 hours and then cooling; Preparing a fourth mixture by mixing 90-110 parts by weight of the cooled resultant and 290-310 parts by weight of distilled water and stirring for 55-65 minutes at a temperature of 75-85°C; and adding 3-7 parts by weight of silver nitrate (AgNO ₃ ) and 3-7 parts by weight of zinc sulfate (ZnSO ₄ ) into the fourth mixture and stirring for 10-14 hours.

The functional composition includes 33-37 parts by weight of tourmaline powder, 28-32 parts by weight of illite powder, 13-17 parts by weight of amphibole powder, 13-17 parts by weight of biotite powder, and silane surface-treated antimony trioxide (Sb ₂ O ₃ ). It is prepared by mixing 38-42 parts by weight,

The carbon fiber dispersion includes preparing a mixed powder by mixing tourmaline powder, illite powder, hornblende powder, and biotite powder in a weight ratio of 1:1:1:1; Preparing a fifth mixture by mixing 18-22 parts by weight of the mixed powder and 78-82 parts by weight of distilled water; extracting the fifth mixture by heating it to a temperature of 84-88°C; After extraction, filtering the fifth mixture to prepare an extract; and mixing 33-37 parts by weight of carbon fiber and 63-67 parts by weight of the extract and subjecting the mixture to ultrasonic irradiation.

The electromagnetic wave shielding tape according to the present invention exhibits excellent electromagnetic wave shielding performance.

In addition, the method of manufacturing an electromagnetic wave shielding tape according to the present invention is not only environmentally friendly by applying an eco-friendly solvent, but also the electromagnetic wave shielding tape manufactured through this method has excellent performance.

Figure 1 is a flowchart showing a method of manufacturing an electromagnetic wave shielding tape provided in one aspect of the present invention.

Hereinafter, various embodiments will be described in more detail with reference to the attached drawings. The embodiments described herein may be modified in various ways. Specific embodiments may be depicted in the drawings and described in detail in the detailed description. However, the specific embodiments disclosed in the attached drawings are only intended to facilitate understanding of the various embodiments. Accordingly, the technical idea is not limited to the specific embodiments disclosed in the attached drawings, and should be understood to include all equivalents or substitutes included in the spirit and technical scope of the invention.

Terms containing ordinal numbers, such as primary, secondary, first, second, etc., may be used to describe various components, but these components are not limited by the above-mentioned terms. The above-mentioned terms are used only for the purpose of distinguishing one component from another.

In this specification, terms such as 'include' or 'have' are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof. When a component is said to be 'connected' or 'connected' to another component, it is understood that it may be directly connected or connected to the other component, but that other components may exist in between. It should be. On the other hand, when a component is mentioned as being 'directly connected' or 'directly connected' to another component, it should be understood that there are no other components in between.

In addition, when describing the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof is abbreviated or omitted.

This invention

fabric;

An adhesive layer formed on one side of the fabric; and

It includes a coating layer formed on the other side of the fabric,

The fabric is a polyester fabric treated with nickel-copper-nickel plating,

An electromagnetic wave shielding tape is provided wherein the adhesive layer and the coating layer contain a conductive additive.

Hereinafter, the electromagnetic wave shielding tape according to the present invention will be described in detail.

The fabric is preferably a polyester fabric that has been treated with nickel-copper-nickel plating.

The fabric is,

Etching a polyester fabric using an etching composition containing 8-12 parts by weight of sodium hydroxide, 0.3-3 parts by weight of octyldodeceth-16, and 87-91 parts by weight of water;

The etched polyester fabric was mixed with 12-16 parts by weight of sodium gluconate, 3-7 parts by weight of 1,3,5-triazine, 0.3-3 parts by weight of sodium polyoxyethylene alkylaryl sulfate, and 78-82 parts by weight of water. Degreasing using a degreasing composition;

Preliminary catalyst treatment by immersing the degreased polyester fabric in hydrochloric acid at a concentration of 7-11% by weight;

Catalyzing the pre-catalyzed polyester fabric by immersing it in a 1:1 mixed solution containing 0.4-0.6% by weight of palladium chloride and 7-11% by weight of hydrochloric acid;

The catalyst-treated polyester fabric was treated with a pH 4.5-5.5 agent containing 10-14 g/l nickel sulfate, 6-10 g/l sodium hypophosphite, 8-12 g/l acetic acid, and 13-17 g/l glycine. 1 Forming a first nickel plating layer by immersing in a nickel plating solution and performing electroless nickel plating at a temperature of 70-80°C;

The polyester fabric on which the first nickel plating layer was formed was mixed with 4-8 g/l cupric sulfate, 6-10 g/l formaldehyde, 18-22 g/l ethylenediaminetetraacetic acid, and 4-8 g/l sodium hydroxide. Forming a copper plating layer by immersing in a copper plating solution containing pH 9-11 and performing electroless copper plating at a temperature of 40-50°C; and

The polyester fabric with the copper plating layer formed has a pH of 4.5-5.5 containing 10-14 g/l of nickel sulfate, 6-10 g/l of sodium hypophosphite, 8-12 g/l of acetic acid, and 13-17 g/l of glycine. The step of forming a second nickel plating layer by immersing it in a second nickel plating solution and performing electroless nickel plating at a temperature of 70-80° C. is used.

In the etching step, the polyester fabric is etched to remove impurities and facilitate plating.

The etching composition contains sodium hydroxide and can improve plating speed by providing improved adhesion and hydrophilicity for plating fabric by etching. In addition, impurities are removed to facilitate plating.

The etching composition contains octyldodeceth-16 and can perform etching more easily than when only sodium hydroxide is applied. Accordingly, the plating speed is further improved to facilitate plating.

It is preferable to use the etching composition by heating it to a temperature of 70-80°C. Etching can be performed more easily by using a heated etching composition.

In the degreasing step, the etched polyester fabric is degreased to increase adhesion to the plating solution, thereby exhibiting excellent plating characteristics.

The degreasing composition contains sodium gluconate and can be degreased without damaging the polyester fabric.

The degreasing composition contains 1,3,5-triazine and can increase the adhesion between the polyester fabric from which impurities have been removed and the nickel plating solution by degreasing.

The degreasing composition includes sodium polyoxyethylene alkylaryl sulfate and thus exhibits more excellent degreasing performance than degreasing using a degreasing composition simply containing sodium gluconate.

It is preferable to use the degreasing composition by heating it to a temperature of 40-50°C. Degreasing can be performed more easily by using a heated degreasing composition.

In the pre-catalyst treatment step, acid treatment is performed, which has an excellent stabilizing effect of the plating solution used in the subsequent plating process.

In the catalyst treatment step, the pre-catalyzed polyester fabric is immersed in a mixed solution of palladium chloride and hydrochloric acid to undergo catalytic metal treatment.

Afterwards, a first nickel plating layer is formed, and after forming the first nickel plating layer, a copper plating layer is formed, and after forming the copper plating layer, a second nickel plating layer is formed to form a nickel-copper-nickel plated polyester fabric. It can be manufactured.

Electroless plating can be easily performed on polyester fabric by applying the first nickel plating solution, copper plating solution, and second nickel plating solution as described above.

An adhesive layer is formed on one side of the fabric, and a coating layer is formed on the other side of the fabric, that is, the other side on which the adhesive layer is not formed.

The adhesive layer and coating layer contain a conductive additive.

The adhesive layer includes 28-32 parts by weight of the first acrylic polymer resin, 13-17 parts by weight of the second acrylic polymer resin, 13-17 parts by weight of the conductive additive, 8-12 parts by weight of the inorganic additive, and 1-5 parts by weight of the natural complex extract. , is preferably formed of a composition for forming an adhesive layer containing 1-5 parts by weight of carbon black, 0.5-4 parts by weight of sodium metaarsenite, and 20-24 parts by weight of water, 29-31 parts by weight of the first acrylic polymer resin, and 29-31 parts by weight of the second acrylic polymer resin. 14-16 parts by weight of acrylic polymer resin, 14-16 parts by weight of conductive additive, 9-11 parts by weight of inorganic additive, 2-4 parts by weight of natural complex extract, 2-4 parts by weight of carbon black, 1-3 parts by weight of sodium metaarsenite It is more preferable that it is formed from a composition for forming an adhesive layer containing 21 to 23 parts by weight of water.

The coating layer contains 43-47 parts by weight of silicone-modified urethane-based resin, 13-17 parts by weight of conductive additive, 8-12 parts by weight of inorganic additive, 1-5 parts by weight of natural complex extract, 1-5 parts by weight of carbon black, and 0.5 parts by weight of sodium metaarsenite. It is preferably formed of a composition for forming a coating layer containing -4 parts by weight and 20-24 parts by weight of methyl ethyl ketone, 44-46 parts by weight of silicone-modified urethane-based resin, 14-16 parts by weight of conductive additive, and 9-11 parts by weight of inorganic additive. , It is more preferable that it is formed of a composition for forming a coating layer containing 2-4 parts by weight of natural complex extract, 2-4 parts by weight of carbon black, 1-3 parts by weight of sodium metaarsenite, and 21-23 parts by weight of methyl ethyl ketone.

The adhesive layer is formed from an aqueous composition, and the coating layer is formed from an oil-based composition, and water and methyl ethyl ketone are used as solvents, respectively.

The first acrylic polymer resin has a weight average molecular weight of 120,000-150,000 and includes 40-44 parts by weight of methyl methacrylate monomer units, 25-29 parts by weight of 2-ethylhexyl acrylate monomer units, and 29-33 parts by weight of acrylic acid monomer units. It is preferable that it is a copolymer.

The second acrylic polymer resin has a weight average molecular weight of 80,000-100,000 and contains 28-32 parts by weight of ethyl methacrylate monomer units, 28-32 parts by weight of 2-ethylhexyl acrylate monomer units, and 2-hydroxyethyl methacrylate monomer. It is preferred that the second copolymer contains 38-42 parts by weight of units.

By applying the first acrylic polymer resin and the second acrylic polymer resin, the coating layer can be easily adhered to the fabric and have excellent durability.

The silicone-modified urethane-based resin can be manufactured by applying raw materials for manufacturing silicone resins such as polydimethylsiloxane and urethane resins such as polyisocyanate and polyol. For example, polydimethylsiloxane (HO-PDMS-OH) is added at 5-10% of the equivalent weight of polyisocyanate (NCO-P-NCO), and at the same time, the molar ratio of isocyanate group (NCO) and hydroxy group (OH) (NCO) is added. /OH) mixing design of polyisocyanate (NCO-P-NCO), polyol (HO-P-OH), and polydimethylsiloxane (HO-PDMS-OH) to be 2.0-8.0; Prepolymer is prepared by reacting polyisocyanate (NCO-P-NCO), polyol (HO-P-OH), and polydimethylsiloxane (HO-PDMS-OH) in a reactor with stirring at a temperature of 60-90°C for 3-5 hours. steps; and adding triethylamine to the prepolymer to neutralize it to produce a silicone-modified urethane-based resin.

The conductive additive preferably contains 48-52 parts by weight of aluminum powder, 28-32 parts by weight of silver powder, and 18-22 parts by weight of nickel powder, and 49-51 parts by weight of aluminum powder, 29-31 parts by weight of silver powder, and nickel. It is more preferable that it contains 19-21 parts by weight of powder. Conductivity can be improved by applying the conductive additive.

The inorganic additive preferably includes 48-52 parts by weight of tourmaline powder, 28-32 parts by weight of mica stone powder, and 18-22 parts by weight of porous γ-alumina, 49-51 parts by weight of tourmaline powder, and 29-31 parts by weight of mica stone powder. parts by weight and 19-21 parts by weight of porous γ-alumina.

The tourmaline is a natural mineral that creates an electric field to generate negative ions, has surface activity and antibacterial properties, and radiates far infrared rays. Tourmaline is applied to the adhesive layer to provide antibacterial properties and also exhibit a deodorizing effect. The tourmaline has a particle size of 20-40 nm, preferably 25-35 nm. The tourmaline can provide excellent antibacterial and deodorizing properties by applying a material with a relatively small particle size.

The mica stone emits far-infrared rays to help blood circulation in the body, and has excellent antibacterial and sterilizing properties, so it not only has the effect of treating internal wounds and trauma, but also has skin beautification and anti-aging effects, and generates ions to help the body function smoothly. I give it to you. Mica stone is applied to the adhesive layer to provide antibacterial and sterilizing properties. The mica stone preferably has a particle size of 60-80 nm, and more preferably has a particle size of 65-75 nm. By applying mica stone powder with the above particle size, the bonding power with each component is excellent.

The porous γ-alumina has pores formed on its surface and can have an excellent deodorizing function. Porous γ-alumina is applied to the adhesive layer to provide deodorizing properties and the antibacterial power of alumina. The porous γ-alumina preferably has a particle size of 90-110 nm, and more preferably has a particle size of 95-105 nm. Although the porous γ-alumina is a material with a relatively large particle size, it exhibits porosity and can effectively perform as an adhesive layer. When applied in the above composition, it has excellent bonding power with each component.

The natural complex extract preferably contains 32-36 parts by weight of lotus leaf extract, 25-29 parts by weight of Yulpi extract, 19-23 parts by weight of persimmon leaf extract, and 16-20 parts by weight of green tea extract, and 33-35 parts by weight of lotus leaf extract, It is more preferable to include 26-28 parts by weight of Yulpi extract, 20-22 parts by weight of persimmon leaf extract, and 17-19 parts by weight of green tea extract.

Lotus leaves are collected from early June to mid-October if possible. Usually, lotus leaves begin to grow in early June and fade by mid-October, so they are collected and used as early as possible. In general, lotus leaves are known to have a detoxifying effect, purify the blood, and have hemostatic, antibacterial, and blood pressure lowering effects. In particular, in Donguibogam, the tip of the lotus leaf is specifically called the lower abdomen (荷鼻) and this part is used in pregnant women. It is said to be effective in making one's body comfortable and eliminating bad blood. Tea made from lotus leaves includes Chinese Whale Gambi Tea (contains lotus leaves, coix, mountain lion, dermis, etc.), which is known to be effective in dieting and skin care.

Yulpi refers to the inner bark of chestnut fruit, and not only the fruit of the chestnut tree, but also fresh leaves, chestnut flowers, chestnut bark, chestnut skin and inner skin have been used as medicine. Chestnut bark contains 9-10% tannin, and the leaves contain 9-10% tannin, vitamin K, and tritertenoids such as flavonoid glycosides hyperin, ursolic acid, betulin, and lupeol. Tannin is usually contained in the roots and bark of trees, but can also be found in leaves. Tannin coagulates proteins in the skin and mucous membranes, changing them into a highly resistant and insoluble substance. These properties of tannin are useful when bacteria and fungi invade, because tannin steals substrate from microorganisms and makes the skin more resistant. Therefore, Yulpi quickly soothes and eliminates skin diseases related to inflammation, eczema, and itching, and is also effective against excessive sweating and diarrhea.

Persimmon leaves are the leaves of the persimmon tree (Diospysos kaki). The persimmon tree is a fruit tree unique to East Asia and is native to Korea, China, and Japan. 100g of persimmon leaves contain about 200mg of vitamin C, which is 2 to 3 times more than that of tangerines. Vitamin C from persimmon leaf extract has the property of resisting heat well, so it is relatively safe to dissolve in water and has high effectiveness. It has no toxicity or side effects, has a diuretic effect, and is recognized as being excellent for kidney disease and heart disease by stabilizing blood pressure. In addition, it contains a lot of carotene, which has the effect of vitamin A, improves disease resistance, has an excellent effect in preventing adult diseases, prevents hangovers and relieves hangovers, has a hemostatic effect, has an effect of stopping diarrhea and upset stomach, has an anti-aging effect, has a skin beauty effect, and has a cold effect. It is good for prevention and brain cell health, and is good for pregnant women and menstruation. The tannin contained in persimmon leaves reduces swelling caused by edema and detoxifies toxic substances such as lead, arsenic, and mercury.

Green tea is known to have the function of supplying vitamins and mineral nutrients and satisfying taste and aroma preferences. The main component of green tea for its astringent taste is catechin, a polyphenol component. Depending on its derivative, catechin is divided into epicatechin, epigallocatechin, epicatechin gallate, and epigallocatechin. It can be classified into gallate (Epigallocatechin gallate), etc. Catechin content amounts to about 8-20% of dried green tea, and is water-soluble, so it dissolves into water when boiled with water. Meanwhile, green tea contains various bioactive substances. In particular, catechins have the function of suppressing the formation of blood clots and preventing arteriosclerosis by reducing LDL cholesterol in the blood, suppressing the production of lipid peroxides, and preventing fat oxidation. It has been discovered that it is also used as a natural antioxidant. In addition, green tea is known to not only prevent aging, but also inhibit the growth of cancer and have anti-carcinogenic properties, as well as having an anti-toxin effect that neutralizes toxins, preventing food poisoning.

The sodium metaarsenite is used to facilitate dispersion and mixing of the composition for forming the adhesive layer. It is preferable to use 0.1-4 parts by weight of sodium metaarsenite, and more preferably 1-3 parts by weight. If the content exceeds the above content, excessive amounts may be applied unnecessarily or dispersion and mixing may not be easy.

A protective layer is formed on the coating layer. The protective layer preferably contains a urethane-based polymer resin.

The protective layer consists of 46-50 parts by weight of the first urethane-based polymer resin, 22-26 parts by weight of the second urethane-based polymer resin, 1-5 parts by weight of potassium rosin acid salt, 1-5 parts by weight of an inorganic antibacterial agent, and 1-5 parts by weight of a functional composition. parts, 0.5-4 parts by weight of a cellulose-based thickener, 0.5-4 parts by weight of rosin ester resin, 0.1-2 parts by weight of an organotin catalyst, and 12-16 parts by weight of a carbon fiber dispersion. 47-49 parts by weight of the first urethane-based polymer resin, 23-25 parts by weight of the second urethane-based polymer resin, 2-4 parts by weight of potassium rosin acid salt, 2-4 parts by weight of inorganic antibacterial agent, 2-4 parts by weight of functional composition, cellulose-based It is more preferable that it is formed of a composition for forming a protective layer containing 1-3 parts by weight of a thickener, 1-3 parts by weight of a rosin ester resin, 0.8-1.2 parts by weight of an organotin catalyst, and 13-15 parts by weight of a carbon fiber dispersion.

The first urethane-based polymer resin is prepared by reacting polyether polyol, methylene diphenyl diisocyanate, and dibutyltin dilaurate by stirring for 3-5 hours at a temperature of 70-80° C. under a nitrogen atmosphere to prepare a reaction product; And adding aminotrialkoxysilane to the reaction product and reacting it at a temperature of 60-70°C; preparing a urethane-based polymer resin including; It is preferable to use one prepared by performing the following.

The second urethane-based polymer resin is preferably polyurethane acrylate.

The potassium rosin acid salt prevents agglomeration of the composition and simultaneously improves miscibility between the urethane-based polymer resin, inorganic antibacterial agent, and functional composition.

It is preferable to use a composite inorganic antibacterial agent of calcium oxide and zeolite substituted with metal ions as the inorganic antibacterial agent. The metal ion may be zinc ion or silver ion.

The functional composition includes 33-37 parts by weight of tourmaline powder, 28-32 parts by weight of illite powder, 13-17 parts by weight of amphibole powder, 13-17 parts by weight of biotite powder, and silane surface-treated antimony trioxide (Sb ₂ O ₃ ). It is preferred that it contains 38-42 parts by weight.

As is well known, tourmaline is a representative negative ion emitter and has the property of permanently flowing a weak current, so it is also called tourmaline. The far-infrared rays emitted from tourmaline promote the flow of blood within the human body and promote perspiration (release of waste products). , it acts as pain relief, skin soothing effect, deodorization, antibacterial, dehumidification, air purification, etc. This current is a weak current of 0.06mA and is the most suitable current for the human body as it comes in contact with the heat (body temperature) of the human body. It is known to have an antibacterial, deodorizing, and cleaning effect by conducting heat transfer to provide insulation, stimulating acupoints to improve the peripheral circulatory system, promoting blood flow, and generating negative ions. It blocks electromagnetic waves by converting harmful positive ions generated from home appliances into negative ions. It also has the function of It is more preferable that the tourmaline powder contains 34-36 parts by weight.

Illite is a representative natural clay mineral and is a porous mica mineral. It has a thin plate-like structure and is curved and elastic, so it has excellent elasticity and adsorption. In addition, it radiates far infrared rays with an emissivity of 93% and 3.71 x 102 at 40℃. In addition, it has antibacterial activity and heavy metal adsorption properties. It is more preferable that the illite powder contains 29-31 parts by weight.

Amphibloe is a black mineral whose main ingredients are calcium, magnesium, and iron and contains some aluminum. It is also called goblet. These amphibole were found to emit large amounts of far-infrared rays and inorganic acids when heated. In particular, it emits 9-10 micron far infrared rays (92% emissivity) that are beneficial to the human body. It is more preferable that the amphibole powder contains 14-16 parts by weight.

Biotite has a far-infrared emissivity of 93% at a temperature of 40 degrees. These minerals are known to have various functions such as sterilization, liquid molecule refinement, far-infrared ray radiation, oxygen supplementation function, improvement of human body absorption ability, acid neutralization function, and adsorption function. In particular, the wavelength emitted from the far-infrared rays emitted from the above-mentioned minerals has the function of preventing cell aging by causing cells to resonate finely 2,000 times per minute when they come into contact with moisture and protein molecules. It is more preferable that the biotite powder contains 14-16 parts by weight.

The silane surface-treated antimony trioxide (Sb2O3) is applied as a flame retardant to provide flame retardancy to the braided layer.

The carbon fiber dispersion preferably contains 33-37 parts by weight of carbon fiber and 63-67 parts by weight of distilled water containing tourmaline extract, illite extract, hornblende extract, and biotite extract, and 34-36 parts by weight of carbon fiber and tourmaline extract. , It is more preferable to include 64-66 parts by weight of distilled water containing illite extract, amphibole extract, and biotite extract. By applying the carbon fiber dispersion as a solvent, the durability of the protective layer is further improved.

In addition, the present invention

Manufacturing a nickel-copper-nickel plated polyester fabric;

On one side of the fabric, 28-32 parts by weight of a first acrylic polymer resin, 13-17 parts by weight of a second acrylic polymer resin, 13-17 parts by weight of a conductive additive, 8-12 parts by weight of an inorganic additive, and 1-5 parts by weight of a natural complex extract. , forming an adhesive layer by applying a composition for forming an adhesive layer containing 1-5 parts by weight of carbon black, 0.5-4 parts by weight of sodium metaarsenite, and 20-24 parts by weight of water;

On the other side of the fabric, 43-47 parts by weight of silicone-modified urethane resin, 13-17 parts by weight of conductive additive, 8-12 parts by weight of inorganic additive, 1-5 parts by weight of natural complex extract, 1-5 parts by weight of carbon black, sodium metaarsenite. Forming a coating layer by applying a composition for forming a coating layer containing 0.5-4 parts by weight and 20-24 parts by weight of methyl ethyl ketone; and

On the coating layer, 46-50 parts by weight of the first urethane-based polymer resin, 22-26 parts by weight of the second urethane-based polymer resin, 1-5 parts by weight of potassium rosin acid salt, 1-5 parts by weight of an inorganic antibacterial agent, and 1-5 parts by weight of a functional composition. A protective layer is formed by applying a composition for forming a protective layer containing 0.5-4 parts by weight of a cellulose-based thickener, 0.5-4 parts by weight of a rosin ester resin, 0.1-2 parts by weight of an organotin catalyst, and 12-16 parts by weight of a carbon fiber dispersion. Including a forming step;

In the step of manufacturing the nickel-copper-nickel plated polyester fabric, the polyester fabric is mixed with 8-12 parts by weight of sodium hydroxide, 0.3-3 parts by weight of octyldodeceth-16, and 87-91 parts by weight of water. etching using an etching composition containing one part by weight; The etched polyester fabric was mixed with 12-16 parts by weight of sodium gluconate, 3-7 parts by weight of 1,3,5-triazine, 0.3-3 parts by weight of sodium polyoxyethylene alkylaryl sulfate, and 78-82 parts by weight of water. Degreasing using a degreasing composition; Preliminary catalyst treatment by immersing the degreased polyester fabric in hydrochloric acid at a concentration of 7-11% by weight; Catalyzing the pre-catalyzed polyester fabric by immersing it in a 1:1 mixed solution containing 0.4-0.6% by weight of palladium chloride and 7-11% by weight of hydrochloric acid; The catalyst-treated polyester fabric was treated with a pH 4.5-5.5 agent containing 10-14 g/l nickel sulfate, 6-10 g/l sodium hypophosphite, 8-12 g/l acetic acid, and 13-17 g/l glycine. 1 Forming a first nickel plating layer by immersing in a nickel plating solution and performing electroless nickel plating at a temperature of 70-80°C; The polyester fabric on which the first nickel plating layer was formed was mixed with 4-8 g/l cupric sulfate, 6-10 g/l formaldehyde, 18-22 g/l ethylenediaminetetraacetic acid, and 4-8 g/l sodium hydroxide. Forming a copper plating layer by immersing in a copper plating solution containing pH 9-11 and performing electroless copper plating at a temperature of 40-50°C; And the polyester fabric on which the copper plating layer was formed was mixed at pH 4.5-5.5 containing 10-14 g/l of nickel sulfate, 6-10 g/l of sodium hypophosphite, 8-12 g/l of acetic acid, and 13-17 g/l of glycine. It includes forming a second nickel plating layer by immersing it in a second nickel plating solution and performing electroless nickel plating at a temperature of 70-80°C,

The first acrylic polymer resin is prepared by adding a catalyst to 40-44 parts by weight of methyl methacrylate monomer, 25-29 parts by weight of 2-ethylhexyl acrylate monomer, and 29-33 parts by weight of acrylic acid monomer and reacting at a temperature of 90°C. It is manufactured by reacting at a temperature of 88-92℃,

The second acrylic polymer resin is prepared by adding a catalyst of 28-32 parts by weight of ethyl methacrylate monomer, 28-32 parts by weight of 2-ethylhexyl acrylate monomer, and 38-42 parts by weight of 2-hydroxyethyl methacrylate monomer at 90°C. It is manufactured by reacting at a temperature of 88-92°C,

The conductive additive is prepared by mixing 48-52 parts by weight of aluminum powder, 28-32 parts by weight of silver powder, and 18-22 parts by weight of nickel powder,

The inorganic additive is prepared by mixing 48-52 parts by weight of tourmaline powder, 28-32 parts by weight of mica stone powder, and 18-22 parts by weight of porous γ-alumina,

The natural complex extract includes washing lotus leaves, yulpi, persimmon leaves, and green tea, respectively, freeze-drying, and then grinding them in a blender to prepare powder; Preparing a first mixture by mixing 32-36 parts by weight of prepared lotus leaf powder, 25-29 parts by weight of Yulpi powder, 19-23 parts by weight of persimmon leaf powder, and 16-20 parts by weight of green tea powder; And the first mixture was mixed with a mixed solvent of acetone and ethanol in a volume ratio of 1:1 at a weight ratio of 1:5, extracted at a temperature of 30°C for 24 hours, filtered through filter paper, and then concentrated in a concentrator at 55°C. It is prepared by performing the steps of concentrating under reduced pressure and freeze-drying at ℃,

The first urethane-based polymer resin is prepared by reacting polyether polyol, methylene diphenyl diisocyanate, and dibutyltin dilaurate by stirring for 3-5 hours at a temperature of 70-80° C. under a nitrogen atmosphere to prepare a reaction product; and adding aminotrialkoxysilane to the reaction product and reacting at a temperature of 60-70°C.

The second urethane-based polymer resin is polyurethane acrylate,

The inorganic antibacterial agent includes the steps of mixing calcium oxide and zeolite in a weight ratio of 1:1 to prepare a second mixture; Preparing a third mixture by mixing 90-110 parts by weight of the second mixture and 290-310 parts by weight of distilled water and stirring for 25-35 minutes at a temperature of 45-55 ° C.; reacting by adding an aqueous solution of phosphoric acid with a concentration of 10% by weight to the third mixture until the pH reaches 8.3; Obtaining the product produced by the reaction by dehydrating and hot air drying; Sintering the product in an oxidizing atmosphere and at a temperature of 830-870°C for 9-11 hours and then cooling; Preparing a fourth mixture by mixing 90-110 parts by weight of the cooled resultant and 290-310 parts by weight of distilled water and stirring for 55-65 minutes at a temperature of 75-85°C; and adding 3-7 parts by weight of silver nitrate (AgNO ₃ ) and 3-7 parts by weight of zinc sulfate (ZnSO ₄ ) into the fourth mixture and stirring for 10-14 hours.

The functional composition includes 33-37 parts by weight of tourmaline powder, 28-32 parts by weight of illite powder, 13-17 parts by weight of amphibole powder, 13-17 parts by weight of biotite powder, and silane surface-treated antimony trioxide (Sb ₂ O ₃ ). It is prepared by mixing 38-42 parts by weight,

The carbon fiber dispersion includes preparing a mixed powder by mixing tourmaline powder, illite powder, hornblende powder, and biotite powder in a weight ratio of 1:1:1:1; Preparing a fifth mixture by mixing 18-22 parts by weight of the mixed powder and 78-82 parts by weight of distilled water; extracting the fifth mixture by heating it to a temperature of 84-88°C; After extraction, filtering the fifth mixture to prepare an extract; and mixing 33-37 parts by weight of carbon fiber and 63-67 parts by weight of the extract and subjecting the mixture to ultrasonic irradiation.

At this time, the manufacturing method of the electromagnetic wave shielding tape provided in one aspect of the present invention is shown in a flowchart in FIG. 1. Hereinafter, the manufacturing method of the electromagnetic wave shielding tape according to the present invention will be described step by step with reference to FIG. 1.

First, the manufacturing method of the electromagnetic wave shielding tape according to the present invention includes manufacturing a nickel-copper-nickel plated polyester fabric.

In the step of manufacturing the nickel-copper-nickel plated polyester fabric, the polyester fabric is mixed with 8-12 parts by weight of sodium hydroxide, 0.3-3 parts by weight of octyldodeceth-16, and 87-91 parts by weight of water. etching using an etching composition containing one part by weight; The etched polyester fabric was mixed with 12-16 parts by weight of sodium gluconate, 3-7 parts by weight of 1,3,5-triazine, 0.3-3 parts by weight of sodium polyoxyethylene alkylaryl sulfate, and 78-82 parts by weight of water. Degreasing using a degreasing composition; Preliminary catalyst treatment by immersing the degreased polyester fabric in hydrochloric acid at a concentration of 7-11% by weight; Catalyzing the pre-catalyzed polyester fabric by immersing it in a 1:1 mixed solution containing 0.4-0.6% by weight of palladium chloride and 7-11% by weight of hydrochloric acid; The catalyst-treated polyester fabric was treated with a pH 4.5-5.5 agent containing 10-14 g/l nickel sulfate, 6-10 g/l sodium hypophosphite, 8-12 g/l acetic acid, and 13-17 g/l glycine. 1 Forming a first nickel plating layer by immersing in a nickel plating solution and performing electroless nickel plating at a temperature of 70-80°C; The polyester fabric on which the first nickel plating layer was formed was mixed with 4-8 g/l cupric sulfate, 6-10 g/l formaldehyde, 18-22 g/l ethylenediaminetetraacetic acid, and 4-8 g/l sodium hydroxide. Forming a copper plating layer by immersing in a copper plating solution containing pH 9-11 and performing electroless copper plating at a temperature of 40-50°C; And the polyester fabric on which the copper plating layer was formed was washed at pH 4.5-5.5 containing 10-14 g/l of nickel sulfate, 6-10 g/l of sodium hypophosphite, 8-12 g/l of acetic acid, and 13-17 g/l of glycine. It is preferable to include the step of forming a second nickel plating layer by immersing it in a second nickel plating solution and performing electroless nickel plating at a temperature of 70-80°C.

In the etching step, the polyester fabric is etched to remove impurities and facilitate plating.

The etching composition contains sodium hydroxide and can improve plating speed by providing improved adhesion and hydrophilicity for plating fabric by etching. In addition, impurities are removed to facilitate plating.

The etching composition contains octyldodeceth-16 and can perform etching more easily than when only sodium hydroxide is applied. Accordingly, the plating speed is further improved to facilitate plating.

It is preferable to use the etching composition by heating it to a temperature of 70-80°C. Etching can be performed more easily by using a heated etching composition.

In the degreasing step, the etched polyester fabric is degreased to increase adhesion to the plating solution, thereby exhibiting excellent plating characteristics.

The degreasing composition contains sodium gluconate and can be degreased without damaging the polyester fabric.

The degreasing composition contains 1,3,5-triazine and can increase the adhesion between the polyester fabric from which impurities have been removed and the nickel plating solution by degreasing.

The degreasing composition includes sodium polyoxyethylene alkylaryl sulfate and thus exhibits more excellent degreasing performance than degreasing using a degreasing composition simply containing sodium gluconate.

It is preferable to use the degreasing composition by heating it to a temperature of 40-50°C. Degreasing can be performed more easily by using a heated degreasing composition.

In the pre-catalyst treatment step, acid treatment is performed, which has an excellent stabilizing effect of the plating solution used in the subsequent plating process.

In the catalyst treatment step, the pre-catalyzed polyester fabric is immersed in a mixed solution of palladium chloride and hydrochloric acid to undergo catalytic metal treatment.

Afterwards, a first nickel plating layer is formed, and after forming the first nickel plating layer, a copper plating layer is formed, and after forming the copper plating layer, a second nickel plating layer is formed to form a nickel-copper-nickel plated polyester fabric. It can be manufactured.

Electroless plating can be easily performed on polyester fabric by applying the first nickel plating solution, copper plating solution, and second nickel plating solution as described above.

Next, the method of manufacturing an electromagnetic wave shielding tape according to the present invention is to apply 28-32 parts by weight of a first acrylic polymer resin, 13-17 parts by weight of a second acrylic polymer resin, 13-17 parts by weight of a conductive additive, and an inorganic additive on one side of the fabric. Apply a composition for forming an adhesive layer containing 8-12 parts by weight, 1-5 parts by weight of natural complex extract, 1-5 parts by weight of carbon black, 0.5-4 parts by weight of sodium metaarsenite, and 20-24 parts by weight of water to form an adhesive layer. It includes the step of forming.

The composition for forming the adhesive layer includes 29-31 parts by weight of the first acrylic polymer resin, 14-16 parts by weight of the second acrylic polymer resin, 14-16 parts by weight of the conductive additive, 9-11 parts by weight of the inorganic additive, and 2-part natural complex extract. It is more preferable to include 4 parts by weight, 2-4 parts by weight of carbon black, 1-3 parts by weight of sodium metaarsenite, and 21-23 parts by weight of water.

The first acrylic polymer resin is prepared by adding a catalyst to 40-44 parts by weight of methyl methacrylate monomer, 25-29 parts by weight of 2-ethylhexyl acrylate monomer, and 29-33 parts by weight of acrylic acid monomer and reacting at a temperature of 90°C. It is preferably prepared by reacting at a temperature of 88-92°C.

The second acrylic polymer resin is prepared by adding a catalyst of 28-32 parts by weight of ethyl methacrylate monomer, 28-32 parts by weight of 2-ethylhexyl acrylate monomer, and 38-42 parts by weight of 2-hydroxyethyl methacrylate monomer at 90°C. It is preferably produced by reacting at a temperature of 88-92°C.

The conductive additive is preferably prepared by mixing 48-52 parts by weight of aluminum powder, 28-32 parts by weight of silver powder, and 18-22 parts by weight of nickel powder.

The inorganic additive is preferably prepared by mixing 48-52 parts by weight of tourmaline powder, 28-32 parts by weight of mica stone powder, and 18-22 parts by weight of porous γ-alumina.

The natural complex extract includes washing lotus leaves, yulpi, persimmon leaves, and green tea, respectively, freeze-drying, and then grinding them in a blender to prepare powder; Preparing a first mixture by mixing 32-36 parts by weight of prepared lotus leaf powder, 25-29 parts by weight of Yulpi powder, 19-23 parts by weight of persimmon leaf powder, and 16-20 parts by weight of green tea powder; And the first mixture was mixed with a mixed solvent of acetone and ethanol in a volume ratio of 1:1 at a weight ratio of 1:5, extracted at a temperature of 30°C for 24 hours, filtered through filter paper, and then concentrated in a concentrator at 55°C. It is preferably prepared by performing the steps of concentrating under reduced pressure and freeze-drying at ℃.

Next, the manufacturing method of the electromagnetic wave shielding tape according to the present invention is to apply 43-47 parts by weight of silicone-modified urethane-based resin, 13-17 parts by weight of conductive additive, 8-12 parts by weight of inorganic additive, and 1-5 parts by weight of natural complex extract on the other side of the fabric. It includes forming a coating layer by applying a composition for forming a coating layer containing 1-5 parts by weight of carbon black, 0.5-4 parts by weight of sodium metaarsenite, and 20-24 parts by weight of methyl ethyl ketone.

The composition for forming the coating layer includes 44-46 parts by weight of silicone-modified urethane-based resin, 14-16 parts by weight of conductive additive, 9-11 parts by weight of inorganic additive, 2-4 parts by weight of natural complex extract, 2-4 parts by weight of carbon black, and meta. It is more preferable to include 1-3 parts by weight of sodium arsenite and 21-23 parts by weight of methyl ethyl ketone.

The silicone-modified urethane-based resin can be manufactured by applying raw materials for manufacturing silicone resins such as polydimethylsiloxane and urethane resins such as polyisocyanate and polyol. For example, polydimethylsiloxane (HO-PDMS-OH) is added at 5-10% of the equivalent weight of polyisocyanate (NCO-P-NCO), and at the same time, the molar ratio of isocyanate group (NCO) and hydroxy group (OH) (NCO) is added. /OH) mixing design of polyisocyanate (NCO-P-NCO), polyol (HO-P-OH), and polydimethylsiloxane (HO-PDMS-OH) to be 2.0-8.0; Prepolymer is prepared by reacting polyisocyanate (NCO-P-NCO), polyol (HO-P-OH), and polydimethylsiloxane (HO-PDMS-OH) in a reactor with stirring at a temperature of 60-90°C for 3-5 hours. steps; and adding triethylamine to the prepolymer to neutralize it to prepare a silicone-modified urethane-based resin.

The conductive additive, inorganic additive, and natural complex extract are prepared and used in the same way as the composition for forming the adhesive layer.

Next, the method of manufacturing the electromagnetic wave shielding tape according to the present invention is to apply 46-50 parts by weight of the first urethane-based polymer resin, 22-26 parts by weight of the second urethane-based polymer resin, 1-5 parts by weight of potassium rosin acid salt, on the coating layer. 1-5 parts by weight of inorganic antibacterial agent, 1-5 parts by weight of functional composition, 0.5-4 parts by weight of cellulose-based thickener, 0.5-4 parts by weight of rosin ester resin, 0.1-2 parts by weight of organotin catalyst, and 12-16 parts by weight of carbon fiber dispersion. It includes the step of forming a protective layer by applying a composition for forming a protective layer containing a part.

The composition for forming the protective layer includes 47-49 parts by weight of the first urethane-based polymer resin, 23-25 parts by weight of the second urethane-based polymer resin, 2-4 parts by weight of potassium rosin acid salt, 2-4 parts by weight of an inorganic antibacterial agent, and functional composition 2. It is more preferable to include -4 parts by weight, 1-3 parts by weight of cellulose-based thickener, 1-3 parts by weight of rosin ester resin, 0.8-1.2 parts by weight of organotin catalyst, and 13-15 parts by weight of carbon fiber dispersion.

The first urethane-based polymer resin is prepared by reacting polyether polyol, methylene diphenyl diisocyanate, and dibutyltin dilaurate by stirring for 3-5 hours at a temperature of 70-80° C. under a nitrogen atmosphere to prepare a reaction product; and adding aminotrialkoxysilane to the reaction product and reacting it at a temperature of 60-70°C.

The inorganic antibacterial agent includes the steps of mixing calcium oxide and zeolite in a weight ratio of 1:1 to prepare a second mixture; Preparing a third mixture by mixing 90-110 parts by weight of the second mixture and 290-310 parts by weight of distilled water and stirring for 25-35 minutes at a temperature of 45-55 ° C.; reacting by adding an aqueous solution of phosphoric acid with a concentration of 10% by weight to the third mixture until the pH reaches 8.3; Obtaining the product produced by the reaction by dehydrating and hot air drying; Sintering the product in an oxidizing atmosphere and at a temperature of 830-870°C for 9-11 hours and then cooling; Preparing a fourth mixture by mixing 90-110 parts by weight of the cooled resultant and 290-310 parts by weight of distilled water and stirring for 55-65 minutes at a temperature of 75-85°C; and adding 3-7 parts by weight of silver nitrate (AgNO ₃ ) and 3-7 parts by weight of zinc sulfate (ZnSO ₄ ) into the fourth mixture and stirring for 10-14 hours.

The functional composition includes 33-37 parts by weight of tourmaline powder, 28-32 parts by weight of illite powder, 13-17 parts by weight of amphibole powder, 13-17 parts by weight of biotite powder, and silane surface-treated antimony trioxide (Sb ₂ O ₃ ). It is preferably prepared by mixing 38-42 parts by weight.

The carbon fiber dispersion includes preparing a mixed powder by mixing tourmaline powder, illite powder, hornblende powder, and biotite powder in a weight ratio of 1:1:1:1; Preparing a fifth mixture by mixing 18-22 parts by weight of the mixed powder and 78-82 parts by weight of distilled water; extracting the fifth mixture by heating it to a temperature of 84-88°C; After extraction, filtering the fifth mixture to prepare an extract; and mixing 33-37 parts by weight of carbon fiber and 63-67 parts by weight of the extract and subjecting the mixture to ultrasonic irradiation.

Hereinafter, the present invention will be explained in more detail by the following examples.

However, the following examples only illustrate the content of the present invention and the scope of the invention is not limited by the examples and experimental examples.

<Example 1> Manufacturing of electromagnetic wave shielding tape

A polyester fabric treated with nickel-copper-nickel plating was manufactured and used.

30 parts by weight of the first acrylic polymer resin, 15 parts by weight of the second acrylic polymer resin, 15 parts by weight of conductive additive, 10 parts by weight of inorganic additive, 3 parts by weight of natural complex extract, 3 parts by weight of carbon black, 2 parts by weight of sodium metaarsenite, and A composition for forming an adhesive layer was prepared by mixing 22 parts by weight of water, and the composition for forming an adhesive layer was applied to one side of the fabric to form an adhesive layer.

Form a coating layer by mixing 45 parts by weight of silicone-modified urethane resin, 15 parts by weight of conductive additive, 10 parts by weight of inorganic additive, 3 parts by weight of natural complex extract, 3 parts by weight of carbon black, 2 parts by weight of sodium metaarsenite, and 22 parts by weight of methyl ethyl ketone. A composition was prepared, and the coating layer forming composition was applied to the other side of the fabric to form a coating layer.

48 parts by weight of the first urethane-based polymer resin, 24 parts by weight of the second urethane-based polymer resin, 3 parts by weight of rosin acid potassium salt, 3 parts by weight of inorganic antibacterial agent, 3 parts by weight of functional composition, 2 parts by weight of cellulose-based thickener, 2 parts by weight of rosin ester resin A composition for forming a protective layer was prepared by mixing 1 part by weight of an organotin catalyst and 14 parts by weight of a carbon fiber dispersion, and the composition for forming a protective layer was applied on the coating layer to form a protective layer.

An electromagnetic wave shielding tape with fabric, adhesive layer, coating layer, and protective layer was manufactured.

<Experimental Example 1> Electromagnetic wave shielding tape

The results of measuring the shielding rate using the electromagnetic wave shielding tape prepared in Example 1 are shown in Table 1 below.

division frequency Shielding rate (%) One 300 MHz 99.8984 2 1 GHz 99.9123 3 2 GHz 99.8747 4 4 GHz 92.5768 5 5 GHz 90.1024

As shown in Table 1, the electromagnetic wave shielding tape according to the present invention showed excellent shielding effect from 300 MHz to 5 GHz.

Claims (3)

Manufacturing a nickel-copper-nickel plated polyester fabric;
On one side of the fabric, 28-32 parts by weight of a first acrylic polymer resin, 13-17 parts by weight of a second acrylic polymer resin, 13-17 parts by weight of a conductive additive, 8-12 parts by weight of an inorganic additive, and 1-5 parts by weight of a natural complex extract. , forming an adhesive layer by applying a composition for forming an adhesive layer containing 1-5 parts by weight of carbon black, 0.5-4 parts by weight of sodium metaarsenite, and 20-24 parts by weight of water;
On the other side of the fabric, 43-47 parts by weight of silicone-modified urethane resin, 13-17 parts by weight of conductive additive, 8-12 parts by weight of inorganic additive, 1-5 parts by weight of natural complex extract, 1-5 parts by weight of carbon black, sodium metaarsenite. Forming a coating layer by applying a composition for forming a coating layer containing 0.5-4 parts by weight and 20-24 parts by weight of methyl ethyl ketone; and
On the coating layer, 46-50 parts by weight of the first urethane-based polymer resin, 22-26 parts by weight of the second urethane-based polymer resin, 1-5 parts by weight of potassium rosin acid salt, 1-5 parts by weight of an inorganic antibacterial agent, and 1-5 parts by weight of a functional composition. A protective layer is formed by applying a composition for forming a protective layer containing 0.5-4 parts by weight of a cellulose-based thickener, 0.5-4 parts by weight of a rosin ester resin, 0.1-2 parts by weight of an organotin catalyst, and 12-16 parts by weight of a carbon fiber dispersion. Including a forming step;
In the step of manufacturing the nickel-copper-nickel plated polyester fabric, the polyester fabric is mixed with 8-12 parts by weight of sodium hydroxide, 0.3-3 parts by weight of octyldodeceth-16, and 87-91 parts by weight of water. etching using an etching composition containing one part by weight; The etched polyester fabric was mixed with 12-16 parts by weight of sodium gluconate, 3-7 parts by weight of 1,3,5-triazine, 0.3-3 parts by weight of sodium polyoxyethylene alkylaryl sulfate, and 78-82 parts by weight of water. Degreasing using a degreasing composition; Preliminary catalyst treatment by immersing the degreased polyester fabric in hydrochloric acid at a concentration of 7-11% by weight; Catalyzing the pre-catalyzed polyester fabric by immersing it in a 1:1 mixed solution containing 0.4-0.6% by weight of palladium chloride and 7-11% by weight of hydrochloric acid; The catalyst-treated polyester fabric was treated with a pH 4.5-5.5 agent containing 10-14 g/l nickel sulfate, 6-10 g/l sodium hypophosphite, 8-12 g/l acetic acid, and 13-17 g/l glycine. 1 Forming a first nickel plating layer by immersing in a nickel plating solution and performing electroless nickel plating at a temperature of 70-80°C; The polyester fabric on which the first nickel plating layer was formed was mixed with 4-8 g/l cupric sulfate, 6-10 g/l formaldehyde, 18-22 g/l ethylenediaminetetraacetic acid, and 4-8 g/l sodium hydroxide. Forming a copper plating layer by immersing in a copper plating solution containing pH 9-11 and performing electroless copper plating at a temperature of 40-50°C; And the polyester fabric on which the copper plating layer was formed was washed at pH 4.5-5.5 containing 10-14 g/l of nickel sulfate, 6-10 g/l of sodium hypophosphite, 8-12 g/l of acetic acid, and 13-17 g/l of glycine. It includes forming a second nickel plating layer by immersing it in a second nickel plating solution and performing electroless nickel plating at a temperature of 70-80°C,
The first acrylic polymer resin is prepared by adding a catalyst to 40-44 parts by weight of methyl methacrylate monomer, 25-29 parts by weight of 2-ethylhexyl acrylate monomer, and 29-33 parts by weight of acrylic acid monomer and reacting at a temperature of 90°C. It is manufactured by reacting at a temperature of 88-92℃,
The second acrylic polymer resin is prepared by adding a catalyst of 28-32 parts by weight of ethyl methacrylate monomer, 28-32 parts by weight of 2-ethylhexyl acrylate monomer, and 38-42 parts by weight of 2-hydroxyethyl methacrylate monomer at 90°C. It is manufactured by reacting at a temperature of 88-92°C,
The conductive additive is prepared by mixing 48-52 parts by weight of aluminum powder, 28-32 parts by weight of silver powder, and 18-22 parts by weight of nickel powder,
The inorganic additive is prepared by mixing 48-52 parts by weight of tourmaline powder, 28-32 parts by weight of mica stone powder, and 18-22 parts by weight of porous γ-alumina,
The natural complex extract includes washing lotus leaves, yulpi, persimmon leaves, and green tea, respectively, freeze-drying, and then grinding them in a blender to prepare powder; Preparing a first mixture by mixing 32-36 parts by weight of prepared lotus leaf powder, 25-29 parts by weight of Yulpi powder, 19-23 parts by weight of persimmon leaf powder, and 16-20 parts by weight of green tea powder; And the first mixture was mixed with a mixed solvent of acetone and ethanol in a volume ratio of 1:1 at a weight ratio of 1:5, extracted at a temperature of 30°C for 24 hours, filtered through filter paper, and then concentrated in a concentrator at 55°C. It is prepared by performing the steps of concentrating under reduced pressure and freeze-drying at ℃,
The first urethane-based polymer resin is prepared by reacting polyether polyol, methylene diphenyl diisocyanate, and dibutyltin dilaurate by stirring for 3-5 hours at a temperature of 70-80° C. under a nitrogen atmosphere to prepare a reaction product; and adding aminotrialkoxysilane to the reaction product and reacting at a temperature of 60-70°C.
The second urethane-based polymer resin is polyurethane acrylate,
The inorganic antibacterial agent includes the steps of mixing calcium oxide and zeolite in a weight ratio of 1:1 to prepare a second mixture; Preparing a third mixture by mixing 90-110 parts by weight of the second mixture and 290-310 parts by weight of distilled water and stirring for 25-35 minutes at a temperature of 45-55 ° C.; reacting by adding an aqueous solution of phosphoric acid with a concentration of 10% by weight to the third mixture until the pH reaches 8.3; Obtaining the product produced by the reaction by dehydrating and hot air drying; Sintering the product in an oxidizing atmosphere and at a temperature of 830-870°C for 9-11 hours and then cooling; Preparing a fourth mixture by mixing 90-110 parts by weight of the cooled resultant and 290-310 parts by weight of distilled water and stirring for 55-65 minutes at a temperature of 75-85°C; and adding 3-7 parts by weight of silver nitrate (AgNO ₃ ) and 3-7 parts by weight of zinc sulfate (ZnSO ₄ ) into the fourth mixture and stirring for 10-14 hours.
The functional composition includes 33-37 parts by weight of tourmaline powder, 28-32 parts by weight of illite powder, 13-17 parts by weight of amphibole powder, 13-17 parts by weight of biotite powder, and silane surface-treated antimony trioxide (Sb ₂ O ₃ ). It is prepared by mixing 38-42 parts by weight,
The carbon fiber dispersion includes preparing a mixed powder by mixing tourmaline powder, illite powder, hornblende powder, and biotite powder in a weight ratio of 1:1:1:1; Preparing a fifth mixture by mixing 18-22 parts by weight of the mixed powder and 78-82 parts by weight of distilled water; extracting the fifth mixture by heating it to a temperature of 84-88°C; After extraction, filtering the fifth mixture to prepare an extract; and mixing 33-37 parts by weight of carbon fiber and 63-67 parts by weight of the extract and irradiating them with ultrasonic waves. delete delete