KR20090063736A - Anti-fouling paint and method for forming a coating using the same - Google Patents

Abstract

An anti-fouling paint is provided to form a strong and thick film with excellent within the short time and the antifouling paint steadily can form the strong and thick film in which the antifouling property stably by curing the paint within the short time. An anti-fouling paint comprises a prepolymer solution; and a resin solution containing silicone resin, fluorinated resin and an antimicrobial agent. The prepolymer solution comprises alkylene diisocyanate having 10-20 parts by weight of isocyanate groups. The silicon resin is an amino-modified silicone polymer. The resin solution comprises the silicon resin of 8-20 parts by weight. The fluorinated resin is an amino modified fluorinated polymer. The antimicrobial agent is organic and inorganic complex non-release type antimicrobial agent containing silver or zinc.

Description

Anti-fouling paint and method for forming film using same {Anti-fouling paint and method for forming a coating using the same}

The present invention is a prepolymer solution; And an antifouling paint comprising a resin solution containing a silicone resin, a fluorinated resin, and an antibacterial agent; And a method of forming a coating film on surfaces of ships, submarines, torpedoes, fluid and gas transfer pipes, steel pipes used for water, concrete tanks, rubber dams, and airplanes using the antifouling paints.

Marine antifouling paints have been developed in various forms to protect ship hulls from foreign matter such as marine life. In particular, the bottom of the waterline where the hull is submerged is attached to various kinds of animal and vegetable marine life. The adhesion of these foreign materials is a factor of increasing fuel consumption and lowering of the navigation speed due to increased resistance to the hull during operation. Due to these problems, in the shipping industry, engine makers, shipyards and paint industry, continuous efforts are being made to suppress the attachment of marine organisms to ships. In addition, in recent years, fuel consumption increases exponentially due to the increase in size and speed of ships, and the demand for solving these problems is increasing.

Conventionally, the form of adding a tin compound as the antifouling paint for solving the above problems has been most used. Such antifouling paints are inexpensive, easy to handle, and have excellent antifouling performance. However, tin compounds are known to be a major cause of marine pollution that releases environmental hormones, and their use is limited. Recently, a newly developed form is a self-wearing antifouling paint that exhibits antifouling performance by using the principle that the antifouling coating film is gradually worn out when the vessel is sailed, without tin compound. The self-wear antifouling paint does not emit environmental hormones, but the strength of the coating is weak, so the paint should be frequently applied, and the coating itself is poor in antifouling performance. have.

Korean Patent Laid-Open Publication No. 1999-61474 discloses an antifouling agent comprising a self-wearing binder having a half ester or a half amide at a polymer side chain end as a colorant and a metal-containing antifouling agent. Start paint. In addition, Korean Patent No. 254651 discloses an antifouling paint made of a vinyl resin made of a vinyl polymer having a plurality of sheep base-type primary amino groups in a molecule thereof. However, the antifouling paints disclosed in the patent have a problem that the antifouling component is eluted into the seawater by reaction with seawater. As a result, the durability of the coating film is poor, and frequent repair painting is required, and when the anchoring component is not actively eluted, a large amount of foreign matter is attached. In addition, this type of antifouling paint has a disadvantage in that it is undesirable from an environmental point of view due to the outflow of seawater of the antifouling component.

Problems caused by foreign material attachment are not limited to silk vessels. For example, marine organisms contained in seawater are attached to and inhabited by marine fish farms made of concrete or the inner walls of pipes that raise seawater, which requires frequent cleaning or replacement, which consumes a lot of manpower and money. Will be. In addition, even in the case of various pipes or rubber dams that transfer fluids such as water and sewage, various foreign substances included in the fluid are attached to the inner or outer surface, and thus the fluid flow is not smooth. Rather, problems such as deterioration of performance and shortening of life due to corrosion occur.

Accordingly, there is an increasing demand for antifouling paints that are environmentally friendly and can form coatings having excellent antifouling performance on ships, submarines, torpedoes, fluid transfer pipes, concrete tanks, and rubber dams.

The present invention has been made in consideration of the above-described problems, and the use of environmentally friendly antifouling paints and the above which can stably prevent foreign substances from being attached to ships, fluid transfer pipes, concrete tanks, submarines, torpedoes, rubber dams or airplanes for a long time. It is an object of the present invention to provide a method capable of stably forming a coating film in a short time.

The present invention as a means for solving the above problems, a prepolymer solution; And

An antifouling paint containing a resin solution containing a silicone resin, a fluorinated resin, and an antibacterial agent is provided.

The prepolymer solution of the present invention preferably comprises an alkylene diisocyanate having an isocyanate group content of 10 to 20 parts by weight.

In addition, the silicone resin in the resin solution of the antifouling paint of the present invention is preferably an amino-modified silicone polymer, and the silicone polymer is preferably a bifunctional silicone prepolymer or a polyester-silicon copolymer having a reactive hydroxyl group.

In the resin solution of the antifouling paint of the present invention, the fluorinated resin is preferably an amino modified fluorinated polymer, and the fluorinated polymer is preferably a perfluoropolyether resin.

In the resin solution of the antifouling paint of the present invention, the antimicrobial agent is preferably an organic-inorganic composite non-release antimicrobial agent containing silver or zinc.

In the antifouling paint, the resin solution may further include 3 to 11 parts by weight of glass flakes.

As another means for solving the above problems, the present invention provides a coating film forming method comprising the step of simultaneously spraying the resin solution and the prepolymer solution of the antifouling paint according to the present invention to the surface of the base material.

In the method of the present invention, the possession may be a vessel, submarine, torpedo, fluid transfer pipe, gas transfer pipe, steel pipe, rubber dam or concrete tank.

It is also preferred that the co-injection in the process of the invention is carried out using a two-component spray device.

In the present invention, the prepolymer solution and the resin solution included in the antifouling paint may be sprayed with a two-component spray device or the like to cure at a high speed within a short time of about 1 to 2 minutes to stably form a thick and thick coating film having excellent antifouling properties. The coating film may fundamentally prevent the adhesion of foreign substances on the surface of the body, and may contribute to fuel saving of a ship, a submarine, a torpedo, or an airplane. The antifouling paint of the present invention can also maintain excellent durability such as crack peeling resistance and abrasion resistance, and thus can maintain the antifouling performance stably for a long time.

The present invention, a prepolymer solution; And

The present invention relates to an antifouling paint containing a resin solution containing a silicone resin, a fluorinated resin, and an antibacterial agent. The coating film formed from the antifouling paint of the present invention imparts slipperiness to the surface of the substrate, lowers surface tension, and improves surface fluidity. Accordingly, the antifouling paint of the present invention can significantly reduce the frictional resistance of the surface of the body, thereby providing an eco-friendly coating film which can stably prevent the adhesion of foreign substances for a long time. The term "base" used in the present invention means an object on which the coating film of the present invention is to be formed, and the type thereof is not particularly limited, and examples thereof include ships, submarines, torpedoes, fluid transfer tubes, gas transfer tubes, Steel pipes, rubber dams or concrete tanks used in water.

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

In the present invention, the prepolymer solution serves as a curing agent in the step of forming a coating film on the surface of the body, thereby controlling the elongation and tensile strength of the paint. Examples of the prepolymer solution that can be used in the present invention include alkylene diisocyanates, preferably alkylene diisocyanates having 1 to 4 carbon atoms, more preferably methylene diisocyanate or ethylene diisocyanate. The isocyanate group of the prepolymer solution as described above reacts with a silicone resin and a fluorinated resin to be described later to form a polyurea-based base, thereby maintaining excellent hardness, weather resistance and elongation of the coating film. Although not particularly limited, the isocyanate group is preferably included in an amount of 10 to 20 parts by weight based on 100 parts by weight of the alkylene diisocyanate of the present invention. If the content is less than 10 weights, there is a fear that the hardness of the coating film after curing is lowered, and if it exceeds 20 parts by weight, the economy is inferior.

The antifouling paint of the present invention is characterized in that it comprises a resin solution containing a silicone resin, a fluorinated resin and an antibacterial agent together with the prepolymer solution. The prepolymer solution and the resin solution are included in the antifouling paint of the present invention alone before the coating film formation step, and react with each other in actual use to form a coating film, especially a polyurea-based coating film on the surface of the substrate.

In the above, the silicone resin serves to lower the surface tension and improve the surface fluidity in the coating film formed by the antifouling paint of the present invention. By such a role of the silicone resin, the slipperiness and antifouling property of the coating film is increased, it is possible to fundamentally prevent the adhesion of foreign matter on the surface of the body. Examples of such silicone resins include reactive amino group-modified silicone polymers. The amino group may react with the isocyanate group of the above-described prepolymer solution to form a polyurea-based base, and the silicone polymer may introduce a silicone group into the base to impart slippage and antifouling properties to the coating film. Although not particularly limited, in the present invention, it is preferable to use a difunctional silicone prepolymer or a polyester-silicon copolymer having a reactive hydroxyl group at the terminal as the silicone polymer. . Examples of such silicone polymers include those distributed under the trade names Silmer (ex. Silmer ^® H Di-100, manufactured by SILTECH Corporation) or DOW CORNING ^® 4-3667 (manufactured by DOW CORNING). The silicone resin is preferably contained in an amount of 8 to 20 parts by weight in the resin solution. When the content is less than 8 parts by weight, there is a fear that the surface tension and surface fluidity improving effect is inferior, and when more than 20 parts by weight, there is a fear that the interlayer adhesion or elongation.

The resin solution of the present invention further includes a fluorinated resin, and examples of such resins include amino group-modified fluorinated polymers. The amino group included in the fluorinated resin reacts with the isocyanate group of the prepolymer solution described above at the time of forming the coating film to form a polyurea-based base, and the fluorinated polymer plays a role of increasing slidability and antifouling property together with the silicone resin. Although the specific kind of fluorinated polymer is not specifically limited in the above, A perfluoropolyether type resin is preferable. At this time, the specific kind of the perfluoropolyether resin is not particularly limited, and includes a linear or branched perfluoropolyether resin, a reactive functional group-containing perfluoropolyether resin, and the like. As the reactive functional group, phosphate ester, phosphate ester ammonium salt, polyurethanes dispersion, ammonium acetate, carboxyl group or salt thereof, siloxane, alcohol Or alkyl amides. Such reactive functional groups may be introduced to the perfluoropolyether resin of the present invention, either alone or in combination of two or more. Specific examples of such fluorinated polymers include FOMBLIN (SOLVAY SOLEXIS (trademark)), GALDEN (SOLVAY SOLEXIS (trademark)), Fluorolink (ex, Fluorolink TLS 5007, Fluorolink TLS 5018, Fluorolink 5032, Fluorolink P56, Fluorolink P53, Fluorolink P58 And the like) (SOLVAY SOLEXIS). The fluorinated polymer is non-toxic and has excellent chemical resistance and heat resistance, low surface tension, and excellent compatibility with metals, plastics, and elastomers. Such fluorinated resin is preferably included in an amount of 0.5 to 10 parts by weight in the resin solution. If the content is less than 0.5 parts by weight, there is a fear that the slipperiness and antifouling effect is inferior, and if more than 10 parts by weight there is a fear that the adhesion and elongation.

The resin solution of the present invention further includes an antibacterial agent. Such an antimicrobial agent exhibits excellent antimicrobial activity against marine organisms such as bacteria, fungi, or algae, and thus can be significantly included in the antifouling paint of the present invention, thereby inhibiting adhesion of marine organisms to the film, thereby significantly improving antifouling properties. In addition, the antimicrobial agent is present in a chemically bonded state with other high molecular materials in the coating film formed by the antifouling paint. As a result, the loss of the antimicrobial agent to the outside of the coating is prevented, and the excellent antifouling property is maintained for a long time, and has the advantage of being environmentally friendly. Although not particularly limited, in the present invention, it is preferable to use a non-release antimicrobial agent having low toxicity, carcinogenicity and skin irritation, and specifically, an organic-inorganic complex non-release antimicrobial agent containing silver or zinc is preferably used. Do. Examples of such antimicrobial agents include those distributed under the trade name Biohunter RX-300. The antimicrobial agent as described above is preferably contained in the resin solution in an amount of 1 to 10 parts by weight, more preferably in an amount of 3 to 7 parts by weight. When the content is less than 1 part by weight or more than 10 parts by weight, the antifouling property or durability of the coating film may be lowered.

The resin solution of the present invention may also further comprise 3 to 11 parts by weight of glass flakes. Such glass flakes are laminated in a multilayer of 100 to 200 layers in a coating film to form a scaly shape, thereby imparting the penetration and corrosion protection function of marine organisms. In addition, the glass flakes may be arranged in parallel with the base material and laminated to prevent permeation of moisture (water or water vapor) and the like, and may improve the strength and abrasion resistance of the coating film to prevent hardening shrinkage. In addition, the glass flakes are present in a dispersed state in the coating film, thereby reducing residual stress deformation, thereby improving durability such as crack peeling resistance and abrasion resistance. When the content of the glass flakes is less than 3 parts by weight, or more than 11 parts by weight, the effect of the addition of the glass flakes does not appear, or there is a fear that the economic efficiency is lowered.

The resin solution of the present invention may further include a general component commonly used in this field, in addition to the above components.

For example, the resin solution of the present invention may further comprise 42 to 48 parts by weight of polyoxyalkylenediamine. The component may be included in the resin solution to control elongation and tensile strength of the coating film. Although it is not specifically limited, In this invention, it is preferable to use polyoxyalkylene diamine of C1-C8 like polyoxyethylene diamine or polyoxypropylene diamine. If the content of the above components is less than 42 parts by weight, the elongation of the coating film may be lowered. If the content of the above components is more than 48 parts by weight, the wear resistance may be lowered and durability may be lowered.

The resin solution of the present invention may further include a curing accelerator for controlling the curing time at the time of coating film formation and for controlling the coating film properties after curing. Examples of the curing accelerator that can be used at this time include those conventional in the art such as polyethertriamine and / or polydiphenyltriamine. In the above polyethertriamine, it is preferable to use a weight average molecular weight of 3,000 to 7,000, preferably 4,000 to 6,000, but is not limited thereto. It is preferable that the resin solution of this invention contains the said polyether triamine in the quantity of 8-10 weight part. If the content is less than 8 parts by weight, the curing time may be too long, and if it exceeds 10 parts by weight, the curing time may be too fast, resulting in appearance damage and / or deterioration in adhesion. In addition, the polydiphenyltriamine may serve to adjust the curing time and improve the elongation of the coating film, which is preferably added in an amount of 15 to 20 parts by weight in the resin solution of the present invention. When the content is less than 15 parts by weight, stickiness remains on the surface or remains after curing is completed, causing surface contamination and foreign matter adhesion, or wear resistance may be lowered. In addition, when the content exceeds 20 parts by weight, durability after curing is lowered, there is a fear that easily broken or broken.

The resin solution of the present invention may also further include one or more additives selected from the group consisting of adhesion promoters, pigments and fillers in a range that does not affect the effects of the invention. The adhesion promoter in the above facilitates the mixing between the raw materials in the resin solution, and serves to increase the adhesion with the base. Examples of such an adhesion promoter include a coupling agent, specifically, a silane-based, titanium-based or aluminum-based coupling agent, and the like, and a silane coupling agent is preferable in view of high cost-effectiveness. Examples of the silane coupling agent include amino silane, epoxy silane, mercapto silane, ureido silane, methacryloxy silane, vinyl silane, sulfido silane, and the like, and preferably β- (3,4-epoxycyclo Hexyl) ethyltrimethoxysilane, γ-glycidoxypropyl methoxy silane and γ-methacryloxypropyl trimethoxysilane may be used, but are not limited thereto. The adhesion promoter is preferably added in an amount of 1 to 2 parts by weight in the resin solution. If the content is less than 1 part by weight, there is a fear that the adhesive force is lowered, while if the content exceeds 2 parts by weight, wear resistance may be lowered.

The resin solution of the present invention may further include a pigment for adjusting the color of the coating film. The type of the pigment is not particularly limited, and may be used without limitation, general materials in this field according to the desired color. Such pigments are preferably included in the range of 1 to 2 parts by weight. If the content is less than 1 part by weight, there is a concern that the effect of pigment addition may not appear, and if it is more than 2 parts by weight, the economy is inferior.

The resin solution of the present invention may also further contain a filler, which serves to improve the wear resistance of the coating film. The type of the filler is not particularly limited, and fillers generally known in the art may be used without limitation. Examples of the filler include nano silicates and the like. The filler is preferably added in an amount of 5 to 9 parts by weight to the resin solution. If the content is less than 5 parts by weight, the wear resistance may be lowered. If the content is more than 9 parts by weight, the specific gravity may be too high and the reactivity may decrease.

The resin solution of the present invention is a pigment dispersant, thickener, leveling agent, antifoaming agent, film forming agent, ultraviolet absorber, HALS, dulling agent, silica, antifungal agent, anti-skinning agent in addition to the above-mentioned components. agent) and one or more additives selected from the group consisting of rust inhibitors.

The present invention also relates to a coating film forming method comprising the step of simultaneously spraying a resin solution and a prepolymer solution of an antifouling paint according to the present invention onto a surface of a substrate. In the antifouling paint of the present invention described above, the prepolymer solution and the resin solution are separately included in the pre-film formation step. The coating film formed by the method of the present invention is excellent in antifouling effect compared to the existing paint, and also excellent in wear resistance and impact resistance. In addition, the antifouling paint of the present invention is a solvent-free type, the prepolymer solution and the resin solution are mixed in the coating film forming step, the super fast curing (about 1 to 2 minutes) and the drying process proceeds to the coating film, preferably a polyurea-based antifouling coating film In the case of forming a thick coating film, it is possible to paint at once. Examples of the base to which the method of the present invention may be applied include, but are not limited to, a ship, a submarine, a torpedo, a fluid transfer pipe, a gas transfer pipe, a steel pipe, a rubber dam, or a concrete water tank.

The coating film forming method may further include the step of performing a surface treatment on the substrate to be formed before the coating film forming step. Through such a surface treatment, contaminants on the surface of the substrate can be removed to improve affinity with the coating film, and adhesion between the coating film and the substrate surface can be improved. The kind and the method of performing such surface treatment are not specifically limited, The general method of this field can be used without a restriction | limiting, For example, an acid treatment, a flame treatment, a corona treatment, or a primer treatment etc. are mentioned.

In the coating film formation method of this invention, by spraying simultaneously the above-mentioned resin solution and a prepolymer solution on the surface to which the pretreatment performed as mentioned above, a coating film can be formed at high speed without a separate mixing process. At this time, the ratio of the resin solution and the prepolymer solution is preferably 7: 3 to 3: 7, more preferably 2: 3 to 3: 2, and most preferably about 1: 1. When the resin solution and the prepolymer solution are simultaneously sprayed in such a ratio, the solution is mixed and a chemical reaction (for example, the reaction between the isocyanate group of the prepolymer solution and the amino period of the resin solution) proceeds, and a very high speed ( For example, curing is completed in about 1 to 2 minutes after spraying, so that a coating film is formed. At this time, it is preferable to perform simultaneous spraying using a two-component spray apparatus in which the resin solution and the prepolymer solution are conveyed and sprayed by separate nozzles. The conditions of the simultaneous injection are not particularly limited, but it is preferable to maintain the temperature of the hose to which the solution is injected at 70 to 80 ℃, and to maintain the pressure at 2,000 psi or more. In addition, when the surface of the coating film is formed in the form of unevenness (embossing) in the coating film forming process, the surface area where foreign matter such as marine organisms comes into contact with the surface of the antifouling layer (coating film) is reduced, which can further increase the antifouling effect and significantly reduce the frictional resistance. The advantage is that it can be done.

Hereinafter, the present invention will be described in more detail with reference to examples according to the present invention and comparative examples not according to the present invention, but the scope of the present invention is not limited to the examples given below.

Example  1 and Comparative example  One

The antifouling paints of Example 1 and Comparative Example 1 were prepared using the compositions shown in Table 1 below.

TABLE 1

Example  One Comparative example  One Prepolymer solution Methylene Diisocyanate 100 100 NCO  Content (% by weight) 15 15 Suzy solution Amino modified silicone resin 10 10 Amino modified fluorinated resin 7 7 Antibacterial agents 5 - Polyoxypropylenediamine 40 41 Polyethertriamine 8 8 Polydiphenyltriamine 12 12 Filler 8 8 Pigment 2 2 Adhesion promoter One One

Silicone resin: Silmer ^® H Di -100

Fluorinated Resin: FOMBLIN ( SOLVAY SOLEXIS (My))

Antibacterial: Biohunter RX -300

(unit: Parts by weight )

For Example 1 and Comparative Example 1 prepared as described above was measured the adhesion, impact resistance, antifouling, anti-friction friction, surface roughness, ship speed and fuel savings.

One. Adhesion  And impact resistance

Using the paints of Example 1 and Comparative Example 1, after forming a coating film having a thickness of about 500 to 800 μm on the same iron plate as a ship hull of 20 cm × 30 cm × 3 mm (width × length × thickness) size, an elcometer addition was performed. Adhesion was measured through an elcometer adhesion dolly test, and impact resistance was also measured using a DuPont impact tester. At this time, the measurement criteria of impact resistance were as follows.

○ (excellent): No cracks or cracks occur when 1 kg of weight is dropped from a height of 50 cm

× (defect): crack or crack occurs when 1 kg of weight is dropped from a height of 50 cm

2. antifouling

Using the paints of Example 1 and Comparative Example 1, a coating film was formed on the same iron plate as the ship hull of 50 cm × 50 cm × 3 mm (width × length × thickness) with a thickness of about 500 to 800 μm, and the water depth of the soft offshore 30 cm After immersion at, 60 cm and 1 m depth, respectively, the presence of animal and vegetable marine organisms and foreign matter was measured for 12 months.

3. Speed friction resistance

Using the paint of Example 1 and Comparative Example 1, after forming a coating film with a thickness of about 500 to 800 μm on a model ship of the same material as a ship hull of 100 cm × 200 cm × 3 mm (width × length × thickness) size, The frictional resistance of the flux was measured by introducing into a flow tank tester.

4. Surface Roughness ( Hull Roughness )

Using the paints of Example 1 and Comparative Example 1, a coating film was formed on the same iron plate as the ship hull of 100 cm × 100 cm × 3 mm (width × length × thickness) with a thickness of about 500 to 800 μm, and used as a hull surface roughness measuring instrument. Hull surface roughness was measured.

5. Ship speed and fuel savings

Experiments were carried out using a water tank, an example of a size of 100m × 8m × 3.5m (length × width × depth), and a model ship in which coatings were formed through the paints of Examples 1 and Comparative Example 1, and based on this, ship speed and fuel The savings were calculated.

The results measured by the above criteria are shown in Table 2 below.

TABLE 2

Example  One Comparative example  One Adhesiveness (N / mm ² ) 12 or more 10 Impact resistance (1 Kg , 50 cm ) ○ × Antifouling (12 months) Vegetable marine life Not attached Attach Animal marine life Not attached Not attached Speed friction resistance (N / 2 (m / s)) 21 28 Surface roughness 8 8 Ship speed Knot ) 17 11 Fuel savings More than 6% reduction compared to conventional paint 3% less than conventional paint

As shown in Table 2, the coating film formed from the coating material of Example 1 of the present invention has significantly superior adhesion, impact resistance, antifouling property, flux friction resistance, surface roughness, ship speed, and fuel saving efficiency compared to the coating film formed from Comparative Example 1. Indicated. Specifically, the antifouling paint of Comparative Example 1 also exhibited excellent physical properties compared to the conventional antifouling paint, but in the case of Example 1 of the present invention further includes an antimicrobial agent, it showed an excellent effect. Specifically, Example 1 showed an excellent effect compared to Comparative Example 1 in the adhesion and impact resistance, in particular, the adhesion of both vegetable and animal marine organisms in the antifouling test. In addition, it was excellent in the frictional resistance of the ship, etc., when applied to the actual ship it can be seen that the excellent ship speed and fuel saving effect compared to Comparative Example 1.

Claims (19)

Prepolymer solution; And An antifouling paint comprising a resin solution containing a silicone resin, a fluorinated resin, and an antibacterial agent. The method of claim 1, The prepolymer solution is an antifouling paint, characterized in that it comprises alkylene diisocyanate having an isocyanate group content of 10 to 20 parts by weight. The method of claim 1, A silicone resin is an amino modified silicone polymer, The antifouling paint characterized by the above-mentioned. The method of claim 3, wherein An antifouling paint, characterized in that the silicone polymer is a bifunctional silicone prepolymer or a polyester-silicon copolymer having a reactive hydroxyl group. The method of claim 1, An antifouling paint, wherein the resin solution contains 8 to 20 parts by weight of a silicone resin. The method of claim 1, An antifouling paint, wherein the fluorinated resin is an amino modified fluorinated polymer. The method of claim 6, An antifouling paint, wherein the fluorinated polymer is a perfluoropolyether resin. The method of claim 1, An antifouling paint, wherein the resin solution contains 0.5 to 10 parts by weight of fluorinated resin. The method of claim 1, An antifouling paint, wherein the antimicrobial agent is an organic-inorganic composite non-release antimicrobial agent containing silver or zinc. The method of claim 1, An antifouling paint, wherein the resin solution contains 1 to 10 parts by weight of an antimicrobial agent. The method of claim 1, An antifouling paint, wherein the resin solution further comprises 3 to 11 parts by weight of glass flakes. The method of claim 1, An antifouling paint, wherein the resin solution further contains 42 to 48 parts by weight of polyoxyalkylenediamine. The method of claim 1, The resin solution is 8 to 10 parts by weight of polyethertriamine; And 15 to 20 parts by weight of polydiphenyltriamine. The method of claim 1, The resin solution adds one or more selected from the group consisting of adhesion promoters, pigments, fillers, pigment dispersants, thickeners, leveling agents, antifoaming agents, film forming agents, ultraviolet absorbers, HALS, chlorine agents, silica, mold inhibitors, surface agent inhibitors and rust inhibitors. Antifouling paint, characterized in that it comprises a. A coating film forming method comprising the step of simultaneously spraying a resin solution and a prepolymer solution of an antifouling paint according to any one of claims 1 to 14 on a surface of a substrate. The method of claim 15, The body is a ship, submarine, torpedo, fluid transfer pipe, gas transfer pipe, steel pipe, rubber dam or concrete water tank. The method of claim 15, Surface treatment of the substrate surface prior to simultaneous spraying. The method of claim 15, Co-injection is carried out using a two-component high pressure spray machine. The method of claim 18, Maintaining the temperature of the hose from which the solution is injected in the high pressure spray device at 70 to 80 ° C. and the pressure at 2,000 psi or more.