Additive composition for antifouling paint and method for preparing same

Abstract

The present invention relates to an additive composition for an antifouling paint and a method for preparing same. The additive composition for an antifouling paint can prevent the attachment of contaminating marine organisms on a marine structure or hull exterior submerged in seawater. The additive composition for an antifouling paint according to the present invention is prepared by a method comprising: a lacquer powder preparation step (S1) in which a lacquer material cut from lacquer tree bark and a lacquer tree is mixed with ethanol in a weight ratio of 1:10 and heated to obtain a lacquer tree extract, the lacquer tree extract is then concentrated under reduced pressure to obtain a lacquer tree concentrate, and the lacquer tree concentrate is applied to the outer periphery of a heated cylindrical stainless container and naturally dried and then exfoliated and pulverized to obtain a lacquer powder; a calcium preparation step (S2) in which oyster shells are washed and then dried and pulverized using a pulverizer to obtain a calcium raw material, and the calcium raw material is calcined and thereby converted into strong alkaline calcium; a glass powder preparation step (S3) in which glass fragments are pulverized into a glass powder; an activated biotite powder preparation step (S4) for converting a biotite raw material into an activated biotite powder; and an additive formulation step in which 1-3 wt% of the lacquer powder, 1-1.5 wt% of the calcium, 1-15 wt% of the glass powder, and 94-96 wt% of the activated biotite powder are mixed using a mixer to formulate the additive composition.

Description

Additive composition for antifouling paint and method for manufacturing the same

[0001] The present invention relates to an additive composition for antifouling paint, and more specifically, to an additive composition for antifouling paint and a method for manufacturing the same that can prevent in advance the attachment of marine organisms causing pollution to the hull surface or marine structures submerged in seawater.

[0002]

[0003] Generally, an antifouling paint is disclosed to prevent the attachment of marine organisms that cause pollution to the hull surface or marine structures that are submerged in seawater.

[0004]

[0005] However, the conventional antifouling paint disclosed in Korean Patent Publication No. 10-2019-0068281 (published June 18, 2019) has the disadvantage of being ineffective in preventing marine organisms from attaching to the hull surface or offshore structures because it is designed to improve crack resistance. Furthermore, since its composition is mainly made of compounds, it cannot be considered environmentally friendly, which entails the problem of causing marine pollution when the paint peels off.

[0006]

[0007] The purpose of the present invention is to provide an additive composition for antifouling paint and a method for manufacturing the same, which can prevent in advance the attachment of marine organisms that cause pollution to the hull exterior or marine structures submerged in seawater.

[0008]

[0009] Another objective of the present invention is to make it possible to easily mix it into paint as needed to create an antifouling paint, and to use it at a relatively lower cost than existing antifouling paints.

[0010]

[0011] The present invention comprises a process for manufacturing lacquer powder, wherein lacquer tree materials obtained by mixing lacquer tree bark and cut wood with ethanol in a weight ratio of 1:10 and heating at 90–110°C for 8–10 hours to obtain a lacquer tree extract, and then applying the lacquer tree extract obtained by vacuum concentrating at 70–90°C for 10–11 hours to the outer periphery of a cylindrical stainless steel container heated to 60–75°C and naturally drying at room temperature for 30–40 minutes, after which the lacquer tree extract is peeled off from the cylindrical stainless steel container and ground to 200 mesh using a grinder to obtain lacquer powder; a process for manufacturing calcium, wherein a 200-mesh calcium raw material obtained by washing, drying, and grinding oyster shells using a grinder is calcined at 750–850°C for 30–40 minutes to convert it into calcium of a strong alkaline agent; and a process for using a grinder to grind glass fragments The method for manufacturing an additive composition for antifouling paint is characterized by comprising: a glass powder manufacturing process in which the raw material is ground to 1,000 to 1,200 mesh to form glass powder; a rock stone powder manufacturing process in which the biotite raw material is ground to 300 to 330 mesh using a grinder to form rock stone powder; and an additive blending process in which 1 to 3 weight% of lacquer powder, 1 to 1.5 weight% of calcium, 1 to 1.5 weight% of glass powder, and 94 to 96 weight% of rock stone powder are blended using a mixer to form an additive composition.

[0012]

[0013] The present invention is further characterized by a method for manufacturing an additive composition for antifouling paint, wherein, after the process of manufacturing a natural rock powder, a process of manufacturing a Zanthoxylum powder is further carried out in which Zanthoxylum seeds and shells are naturally dried at room temperature for 90 to 100 hours and then ground using a grinder to produce Zanthoxylum powder of 300 to 330 mesh, and an additive blending process is carried out in which 1 to 4 weight% lacquer powder, 1 to 2 weight% calcium, 1 to 2 weight% glass powder, 92 to 94 weight% natural rock powder, and 2 to 3 weight% Zanthoxylum powder are blended using a mixer.

[0014]

[0015] The present invention is further characterized by an additive composition for antifouling paint, which is manufactured by the above manufacturing method and comprises 1 to 4 weight% lacquer powder, 1 to 2 weight% calcium, 1 to 2 weight% glass powder, 92 to 94 weight% natural rock powder, and 2 to 3 weight% Zanthoxylum powder.

[0016]

[0017] The present invention has the effect of preventing the attachment of marine organisms that cause pollution to the hull exterior or marine structures submerged in seawater, and provides an additive composition for antifouling paint with enhanced insecticidal power and a method for manufacturing the same.

[0018]

[0019] Furthermore, the present invention not only has the effect of being easily mixed into paint as needed to create an antifouling paint, but also provides the effect of being relatively cheaper than commercially available antifouling paints because it can be blended into inexpensive paint to create an antifouling paint.

[0020]

[0021] FIG. 1 is a manufacturing process diagram showing a manufacturing method of an embodiment of the present invention,

[0022] FIG. 2 is a manufacturing process diagram showing a method for manufacturing another embodiment of the present invention.

[0023]

[0024] The present invention comprises a lacquer tree powder manufacturing process (S1) in which lacquer tree materials obtained by mixing lacquer tree bark and cut wood with ethanol in a weight ratio of 1:10 and heating at 90–110°C for 8–10 hours to obtain a lacquer tree extract, and then applying the obtained lacquer tree extract to the outer periphery of a cylindrical stainless steel container heated to 60–75°C for 10–11 hours and naturally drying at room temperature for 30–40 minutes, after which the lacquer tree extract is peeled off from the cylindrical stainless steel container and ground to 200 mesh using a grinder to obtain lacquer powder; a calcium manufacturing process (S2) in which 200 mesh calcium raw material obtained by washing, drying, and grinding oyster shells using a grinder is calcined at 750–850°C for 30–40 minutes to convert it into calcium of a strong alkali agent, and glass fragments using a grinder The present invention provides a method for manufacturing an additive composition for antifouling paint, comprising: a glass powder manufacturing process (S3) in which the raw material is ground to 1,000 to 1,200 mesh to become glass powder; a rock stone powder manufacturing process (S4) in which the biotite raw material is ground to 300 to 330 mesh rock stone powder using a grinder; and an additive blending process in which 1 to 3 weight% lacquer powder, 1 to 1.5 weight% calcium, 1 to 1.5 weight% glass powder, and 94 to 96 weight% rock stone powder are blended using a mixer to form an additive composition.

[0025]

[0026] The present invention will be explained in more detail as follows based on the attached preferred embodiments.

[0027]

[0028] In the present invention, detailed descriptions of the functions of each of the various components may be omitted. Furthermore, if it is determined that a specific description of known technology could obscure the essence of the present invention, such detailed drawings and descriptions may be omitted.

[0029]

[0030] FIG. 1 illustrates an embodiment of the present invention, wherein a lacquer powder manufacturing process (S1), a calcium manufacturing process (S2), a glass powder manufacturing process (S3), a natural rock powder manufacturing process (S4), and a mixing process are carried out.

[0031]

[0032] The lacquer powder manufacturing process (S1) involves mixing lacquer tree bark and cut wood with ethanol in a weight ratio of 1:10, heating at 90 to 110°C for 8 to 10 hours to obtain a lacquer tree extract, and then concentrating the lacquer tree extract under reduced pressure at 70 to 90°C for 10 to 11 hours to produce a lacquer tree extract.

[0033]

[0034] Next, the lacquer tree extract is applied to the outer periphery of a cylindrical stainless steel container heated to 60~75℃ and naturally dried at room temperature for 30~40 minutes, after which the lacquer tree extract is peeled off from the cylindrical stainless steel container and then ground to 200 mesh using a grinder to produce lacquer powder.

[0035]

[0036] The calcium manufacturing process (S2) involves washing oyster shells, drying them naturally at room temperature for 48 hours, and grinding them with a grinder to obtain a 200-mesh calcium raw material, which is then calcined at 750-850°C for 30-40 minutes to convert it into a strong alkaline agent and to convert it into a water-soluble substance.

[0037] The glass powder manufacturing process (S3) is a process of grinding glass pieces using a grinder to make glass powder of 1,000 to 1,200 mesh.

[0038]

[0039] The process for manufacturing the black rock powder (S4) is a process of using a grinder to make the biotite raw material into 300 to 330 mesh.

[0040]

[0041] The additive blending process of the present invention is a process in which 1 to 3% by weight of lacquer powder, 1 to 1.5% by weight of calcium, 1 to 1.5% by weight of glass powder, and 94 to 96% by weight of natural rock powder are blended using a mixer.

[0042]

[0043] Accordingly, the present invention involves the commercially available additive formulated as described above, and the creation of an antifouling paint by mixing the additive of the present invention with commercially available paint at the place where the paint is used, and applying it to the exterior of a ship's hull or marine structures that are submerged in seawater. Since the paint is a general paint commonly available on the market, a detailed description thereof is omitted.

[0044]

[0045] At this time, the additive composition of the present invention and the paint are mixed in a mixer at a weight ratio of 80:1 to dilute and used, and after coating, they are allowed to air dry for 12 to 14 hours.

[0046]

[0047] Therefore, in this invention, when the lacquer powder component is diluted with paint, it dissolves, and the urushiol component, which is the main component of the lacquer powder, comes into contact with the paint and oxidizes to act as a natural resin. That is, the urushiol component combines with oxygen through its own oxidizing enzyme and oxidizes, changing into a state similar to brown resin, thereby firmly coagulating the paint to form a film coating, which significantly reduces the wear of the film.

[0048]

[0049] Since calcium is a strong alkaline component, it preemptively blocks the environment for the formation of acidified microbial films and performs a sterilization action. In other words, for instance, marine substances such as barnacles begin to attach to submerged parts of ships after a microbial film has formed on the submerged part, but calcium, being a strong alkaline component, completely blocks the environment for the formation of microbial films.

[0050]

[0051] Furthermore, calcium is a substance with excellent hardening properties that binds to the surface of the paint to increase its hardness. In other words, it causes a solvation reaction during the hardening process, thereby increasing the strength of the paint; since the aforementioned solvation reaction is already known, a detailed explanation will be omitted.

[0052]

[0053] Glass powder is a fine powder with a mesh size of 10,000, and due to the material properties of glass, it increases the strength of the paint film and acts as a hindering factor when marine pollutants attempt to attach, thereby preventing marine pollutants from adhering well.

[0054]

[0055] Due to the material properties of the biotite component, it has a strong UV blocking effect, which not only extends the lifespan of the coating but also reduces friction in areas in contact with seawater, such as during ship operation, thanks to the talc component.

[0056]

[0057] Furthermore, the far-infrared rays and negative ions emitted from the biotite component disrupt the attachment of contaminants to the submerged parts of the ship, thereby blocking their adhesion. In addition, due to its 42% oxygen content, the biotite interferes with the vacuum effect caused by the attachment of contaminants to the submerged parts of the ship, thus hindering the formation of contaminants in those areas. Moreover, since the biotite component has a 95% antibacterial effect, it acts to inhibit the formation of microbial films in the submerged parts of the ship.

[0058]

[0059] To aid in understanding the present invention, the U.S. Department of Agriculture announced that while high anion levels aid in the sterilization of Salmonella, they can be fatal to microorganisms (biofilms). Furthermore, when the coated surface is exposed to a corrosive environment and absorbs water, calcium ions are released as they undergo ion exchange with hydrogen ions. These two types of released ions diffuse and precipitate toward the metal substrate, contributing to corrosion prevention. In addition, the two released ion species precipitate into the pores within the polymer coating, thereby strengthening the coating's protective function against the steel plate. (Refer to Korean Chem. Eng. Res., Vol. 49, No. 6, December 2011, pp. 745-751)

[0060]

[0061] [Example 1]

[0062] The additive composition of the present invention and the paint were diluted as shown in Table 1 below, and an experiment was conducted to see if contaminants such as barnacles adhered.

[0063] Ingredient Test 1 Test 2 Paint (g) 1,000 2,000 Additive composition of the present invention Lacquer powder (g) 1,328 Calcium (g) 1,534 Glass powder (g) 1,023 Natural stone powder (g) 1,540 Test results (visual inspection) Marine pollutants did not adhere by 70~80% compared to existing materials Marine pollutants did not adhere by 90% compared to existing materials

[0064] As shown in Table 1 above, the results of the experiment showed that in Experiment 1, the plates were immersed in seawater for 4 months, and it was confirmed that marine pollutants did not adhere to the steel plates coated with the present invention by about 70-80% compared to the conventional steel plates coated with ordinary paint. In Experiment 2, after immersion for 4 months, it was confirmed that marine pollutants adhered to the ropes not coated with the present invention, but did not adhere to the ropes coated with the present invention by about 90% compared to the conventional ones.

[0065]

[0066] FIG. 2 shows a manufacturing method of another embodiment of the present invention, wherein the lacquer powder manufacturing process (S1), calcium manufacturing process (S2), glass powder manufacturing process (S3), and natural rock powder manufacturing process (S4) of the previously described embodiment are carried out in the same way.

[0067]

[0068] Accordingly, the present invention further performs a coating powder manufacturing process (S5) after the rock powder manufacturing process (S4).

[0069]

[0070] The process for manufacturing the Zanthoxylum powder (S5) is a process in which the Zanthoxylum seeds and shells are naturally dried at room temperature for 90 to 100 hours, and then ground using a grinder to produce Zanthoxylum powder of 300 to 330 mesh.

[0071]

[0072] And in this case, the additive mixing process of the present invention is carried out by mixing 1-4% by weight of lacquer powder, 1-2% by weight of calcium, 1-2% by weight of glass powder, 92-94% by weight of natural rock powder, and 2-3% by weight of Zanthoxylum powder using a mixer to form an additive composition.

[0073]

[0074] Since the zepidermal component has an insecticidal function, it kills contaminants such as organisms or microorganisms when they adhere to the flooded parts of the ship, thereby preventing organisms or microorganisms from approaching the flooded parts of the ship, or causing them to fall off or die immediately even if they do adhere to the flooded parts of the ship, thus preventing contaminants from adhering to the flooded parts of the ship.

[0075]

[0076] Accordingly, the present invention involves the commercially available additive formulated as described above, and the creation of an antifouling paint by mixing the additive of the present invention with commercially available paint at the place where the paint is used, and applying it to the exterior of a ship's hull or marine structures that are submerged in seawater. Since the paint is a general paint commonly available on the market, a detailed description thereof is omitted.

[0077]

[0078] [Example 2]

[0079] The additive composition of another embodiment of the present invention and the paint were diluted as shown in Table 1 below to test whether contaminants such as barnacles were attached.

[0080] Ingredient Test 1 Test 2 Paint (g) 1,000 2,000 Additive composition of the present invention Lacquer powder (g) 1,026 Calcium (g) 1,330 Glass powder (g) 1,023 Natural stone powder (g) 1,642 Zanthoxylum bark powder (g) 1,332 Experimental results (visual inspection) Marine pollutants did not adhere 80~85% compared to existing materials Marine pollutants did not adhere 93% compared to existing materials

[0081] As shown in Table 2 above, the results of the experiment showed that in Experiment 1, the plates were immersed in seawater for 4 months, and it was confirmed that marine pollutants did not adhere to the steel plates coated with the present invention by about 80-85% compared to the conventional steel plates coated with ordinary paint. In Experiment 2, after immersion for 4 months, it was confirmed that marine pollutants adhered to the ropes not coated with the present invention, but did not adhere to the ropes coated with the present invention by about 95% compared to the conventional ones.

[0082]

[0083] In some cases, the present invention may also be used to produce an antifouling paint by adding the additive composition of the present invention to existing paint and diluting it.

[0084]

[0085] Therefore, the present invention is not necessarily limited to what has been described and may be modified in various forms by those skilled in the art to which the invention pertains; thus, it is obvious that it should be broadly protected as long as it does not significantly deviate from the scope of the claims.

[0086]

[0087] Since the present invention is an additive composition for antifouling paint that prevents the attachment of marine organisms causing pollution to marine structures, it can be used by diluting it with general paint and applying it to the exterior of a ship's hull that is submerged in seawater, nets in marine aquaculture farms, or various equipment installed in the ocean that is submerged in seawater, in order to prevent the attachment of marine organisms.

Claims

1. A process for manufacturing lacquer powder (S1) comprising mixing lacquer tree materials, such as lacquer tree bark and cut wood, with ethanol in a weight ratio of 1:10 and heating at 90~110℃ for 8~10 hours to obtain a lacquer tree extract, then concentrating the lacquer tree extract under reduced pressure at 70~90℃ for 10~11 hours to obtain a lacquer tree extract, applying the obtained extract to the outer periphery of a cylindrical stainless steel container heated to 60~75℃ and naturally drying at room temperature for 30~40 minutes, after which the lacquer tree extract is peeled off from the cylindrical stainless steel container and ground to 200 mesh using a grinder to obtain lacquer powder; A calcium manufacturing process (S2) in which 200-mesh calcium raw material obtained by washing, drying, and grinding oyster shells with a grinder is calcined at 750~850℃ for 30~40 minutes to convert it into calcium of a strong alkaline agent; A glass powder manufacturing process (S3) in which glass fragments are ground using a grinder to a size of 1,000 to 1,200 mesh to form glass powder; A process for manufacturing natural rock powder (S4) in which biotite raw material is ground into natural rock powder of 300 to 330 mesh using a grinder; and A method for manufacturing an additive composition for antifouling paint, characterized by including an additive mixing process in which 1~3% by weight of lacquer powder, 1~1.5% by weight of calcium, 1~1.5% by weight of glass powder, and 94~96% by weight of natural rock powder are mixed using a mixer to form an additive composition.

2. In Paragraph 1, After the above-mentioned natural rock powder manufacturing process (S4), a Zanthoxylum powder manufacturing process (S5) is further carried out in which Zanthoxylum seeds and shells are naturally dried at room temperature for 90 to 100 hours and then ground into Zanthoxylum powder of 300 to 330 mesh using a grinder; A method for manufacturing an additive composition for antifouling paint, characterized by carrying out an additive mixing process in which 1-4% by weight of lacquer powder, 1-2% by weight of calcium, 1-2% by weight of glass powder, 92-94% by weight of natural rock powder, and 2-3% by weight of Zanthoxylum powder are mixed using a mixer.

3. An additive composition for antifouling paint, characterized by being manufactured by the method of claims 1 and 2 and comprising a mixture of 1-4% by weight of lacquer powder, 1-2% by weight of calcium, 1-2% by weight of glass powder, 92-94% by weight of natural rock powder, and 2-3% by weight of Zanthoxylum powder.

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