Amphiphilic fouling-releasing antifouling coating grafted with antifouling groups and preparation method thereof

Abstract

The present invention relates to the technical field of coatings, and in particular to an amphiphilic fouling-releasing antifouling coating with grafted antifouling groups and a preparation method thereof. The coating comprises a component A, a component B and a component C; the raw material components of the component A comprise fluorinated polysiloxane terminated with silanol, silicon dioxide and a second solvent; the raw material components of the component B comprise N,N-dimethyl-3-aminopropyltrimethoxysilane and a silane coupling agent grafted with antifouling groups; the raw material components of the component C comprise a catalyst and a third solvent; the silane coupling agent grafted with antifouling groups is prepared by heating and reacting bromopyrrole nitrile and an isocyanate silane coupling agent in a first solvent. The coating prepared by the coating has grafted antifouling groups and is amphiphilic, has good antifouling performance, and will not be released into the marine environment, so it is an environmentally friendly antifouling material.

Description

Technical Field

[0001] The invention relates to the technical field of coatings, and in particular to an amphiphilic fouling-releasing antifouling coating with grafted antifouling groups and a preparation method thereof. Background Art

[0002] Silicone-based fouling-release coating is an environmentally friendly marine antifouling material. Its low surface energy and low elastic modulus make it easier for attached marine organisms to detach from the surface.

[0003] The most commonly used silicone-based fouling-release coatings are polydimethylsiloxane-based silicone elastomers, which produce coatings with smooth surfaces and exhibit good fouling release properties. However, they are only suitable for high-speed ships of 15 knots or above, and exhibit poor anti-fouling properties for slow-speed ships, ships that have been idle for a long time, and marine facilities under static conditions. Moreover, these pure silicone-based fouling coatings will still be fouled by the slime layer composed of diatoms and bacteria even at high speeds, and their anti-fouling properties are poor.

[0004] In order to improve the antifouling performance, some existing coating studies have adopted physical modification methods of adding a large number of nanoparticles, but this will increase the elastic modulus of the coating, and too high an elastic modulus will effectively affect the antifouling performance.

[0005] In addition, some existing coatings directly add antifouling agents into silicone-based resins, which can also cause incompatibility between the antifouling agent and the silicone-based material, resulting in poor system compatibility and affecting coating performance (eg, causing poor antifouling performance). Summary of the invention

[0006] In order to solve the problems of the prior art mentioned in the above background technology, the present invention provides an amphiphilic fouling-releasing antifouling coating grafted with antifouling groups and a preparation method thereof, and the technical scheme thereof is as follows:

[0007] The amphiphilic fouling-releasing antifouling coating with grafted antifouling groups comprises a component A, a component B and a component C; the raw material components of the component A comprise silanol-terminated fluorinated polysiloxane (F-PDMS for short), silicon dioxide and a second solvent; the raw material components of the component B comprise N,N-dimethyl-3-aminopropyltrimethoxysilane (NPTS for short), a silane coupling agent with grafted antifouling groups (E-IPTS for short) and a crosslinking agent; the raw material components of the component C comprise a catalyst and a third solvent; the silane coupling agent with grafted antifouling groups (E-IPTS for short) is prepared by heating a bromopyrrolecarbonitrile (ECONEA for short) and an isocyanate silane coupling agent (IPTS for short) in a first solvent.

[0008] In one embodiment, the weight ratio of the isocyanate silane coupling agent, bromopyrrole carbonitrile and the first solvent is (20-40): (30-50): (20-40); the temperature of the heating reaction is 40-60° C., and the reaction time is 3-6 hours.

[0009] In one embodiment, the preparation process of the silane coupling agent grafted with antifouling groups is as follows: the bromopyrrole carbonitrile is dissolved in a first solvent, the reaction system is heated to 40-60°C, an isocyanate silane coupling agent is added under a protective atmosphere, and the reaction is heated at 40-60°C for 3-6 hours to obtain the silane coupling agent grafted with antifouling groups.

[0010] In one embodiment, the isocyanate silane coupling agent is one of 3-isocyanate propyl triethoxy silane and 3-isocyanate propyl trimethoxy silane, or a combination of both; and the protective atmosphere is one of nitrogen and helium atmospheres.

[0011] The structural formula of the isocyanate silane coupling agent is:

[0012] Wherein, R is ethyl or methyl.

[0013] The structural formula of the bromopyrrole carbonitrile is:

[0014]

[0015] In one embodiment, the component A comprises, by weight, 40 to 60 parts of silanol-terminated fluorinated polysiloxane, 3 to 6 parts of silicon dioxide, 10 to 30 parts of a second solvent, and 0 to 4 parts of a pigment or filler;

[0016] The second component includes 20 to 40 parts of N,N-dimethyl-3-aminopropyltrimethoxysilane, 20 to 50 parts of a silane coupling agent grafted with an antifouling group, and 0 to 50 parts of a crosslinking agent;

[0017] The component C comprises 30 to 50 parts of a catalyst and 30 to 50 parts of a third solvent.

[0018] In one embodiment, the structural formula of the silanol-terminated fluorinated polysiloxane is:

[0019]

[0020] The molecular weight is 2000-150000, x=1-30, y=1-300, n=0-10; preferably, the molecular weight is 5000-50000.

[0021] The structural formula of the N,N-dimethyl-3-aminopropyltrimethoxysilane is:

[0022]

[0023] In one embodiment, the first solvent is one or more combinations of aromatic hydrocarbon solvents, ester solvents, and ketone solvents; the second solvent is one or more combinations of aromatic hydrocarbon solvents, ketone solvents, and ester solvents; the third solvent is one or more combinations of aromatic hydrocarbon solvents, ketone solvents, and ester solvents.

[0024] In one embodiment, the crosslinking agent is one or more combinations of ethyl silicate, propyl silicate, methyltrimethoxysilane, methyltriethoxysilane, methyltriacetoxysilane, vinyltriacetoxysilane, methyltributylidene oxime silane, and tetrakis(methylethylketoxime)silane;

[0025] The surface area of ​​the silicon dioxide is greater than 10 m 2 / g, preferably, the specific surface area is 20 to 300m 2 / g;

[0026] The pigment filler is one or more combinations of titanium dioxide, iron yellow, iron red, carbon black, silicate, barium sulfate, and silica;

[0027] The catalyst is one or more combinations of metal salts of organic carboxylic acids (such as stannous octoate, dibutyltin dilaurate, zinc naphthenate and zinc stearate), amine compounds and salts thereof (such as hexylamine and dodecylamine phosphate), and quaternary ammonium salts (such as benzyltrimethylammonium acetate and hexylammonium acetate).

[0028] In one embodiment, the aromatic hydrocarbon solvent is one or a combination of two of toluene, xylene, and trimethylbenzene; the ketone solvent is one or a combination of two of methyl ethyl ketone, butanone, cyclohexanone, and 4-methyl-2-pentanone; and the ester solvent is one or a combination of two of butyl acetate and ethyl acetate. For example, the second solvent and the third solvent can be selected from toluene, xylene, methyl ethyl ketone, butanone, cyclohexanone, 4-methyl-2-pentanone, butyl acetate, and ethyl acetate.

[0029] The present invention provides a method for preparing the above-mentioned amphiphilic fouling-releasing antifouling coating grafted with antifouling groups, which comprises the following steps:

[0030] Mixing the raw material components of the component A uniformly according to a certain weight ratio to obtain the component A;

[0031] Mixing the raw material components of component B uniformly according to a certain weight ratio to obtain component B;

[0032] Mixing the raw material components of component C uniformly according to a certain weight ratio to obtain component C;

[0033] The component A, the component B and the component C are mixed evenly to obtain an amphiphilic fouling-releasing antifouling coating with grafted antifouling groups.

[0034] The amphiphilic fouling-releasing antifouling coating with grafted antifouling groups provided by the present invention has the following beneficial effects compared with the prior art:

[0035] The invention provides an amphiphilic fouling-releasing antifouling coating with grafted antifouling groups. The coating prepared by the coating is grafted with antifouling groups and has amphiphilicity and good antifouling performance. At the same time, the coating will not be released into the marine environment, and is an environmentally friendly antifouling material. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a comparison diagram of the physical states of the bromopyrrolecarbonitrile and the silane coupling agent grafted with an antifouling group obtained by modifying the bromopyrrolecarbonitrile with an isocyanate silane coupling agent in Example 1 of the present invention;

[0037] Figure 2 Schematic diagram of the antifouling principle of the amphiphilic fouling-releasing coating with grafted antifouling groups provided by the present invention. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] The present invention provides an operational example of a method for preparing an amphiphilic fouling-releasing antifouling coating grafted with an antifouling group, comprising the following steps:

[0040] (1) uniformly mixing the raw material components of the component A according to a certain weight ratio to obtain the component A;

[0041] (2) uniformly mixing the raw material components of the component B according to a certain weight ratio to obtain the component B;

[0042] (3) uniformly mixing the raw material components of component C according to a certain weight ratio to obtain component C;

[0043] (4) Add component A, component B and component C respectively into a dispersion tank, and disperse at 1000-2000 r / min for 20 minutes to obtain an amphiphilic fouling-release antifouling coating grafted with antifouling groups. The mass ratio of component A, component B and component C is (85-100): (5-15): (1-5).

[0044] The raw material component formula of the coating is as follows: by weight, the component A includes 40 to 60 parts of silanol-terminated fluorinated polysiloxane, 3 to 6 parts of silicon dioxide, 10 to 30 parts of a second solvent, and 0 to 4 parts of a pigment filler; the component B includes 20 to 40 parts of N,N-dimethyl-3-aminopropyltrimethoxysilane, 20 to 50 parts of a silane coupling agent grafted with an antifouling group, and 0 to 50 parts of a crosslinking agent;

[0045] The component C comprises 30 to 50 parts of a catalyst and 30 to 50 parts of a third solvent.

[0046] The operation example of the preparation method of the silane coupling agent grafted with antifouling groups is as follows:

[0047] A certain weight of bromopyrrolecarbonitrile (ECONEA) is dissolved in the first solvent in a container, and the container system is heated to 40-60°C. At the same time, isocyanate silane coupling agent IPTS is slowly added dropwise under the protection of a protective atmosphere. After reacting for 3-6 hours, heating is stopped to obtain a light yellow product E-IPTS containing a solvent, i.e., a silane coupling agent grafted with an antifouling group.

[0048] Among them, the weight ratio of the isocyanate silane coupling agent, bromopyrrole carbonitrile and the first solvent is (20-40): (30-50): (20-40); the isocyanate silane coupling agent is one or a combination of 3-isocyanate propyl triethoxy silane and 3-isocyanate propyl trimethoxy silane; the protective atmosphere is one of nitrogen and helium atmosphere.

[0049] The present invention also provides the following embodiments and comparative examples:

[0050] The formulas of the embodiments and comparative examples are shown in Table 1

[0051] Table 1

[0052]

[0053]

[0054]

[0055] In Table 1, the structural formula of the silanol-terminated fluorinated polysiloxane F-PDMS used is:

[0056]

[0057] Its molecular weight is 10000, wherein x:y=1:5, and n is 0.

[0058] The silicon dioxide used has a specific surface area of ​​100m 2 / g of silicon dioxide; the second solvent used is xylene; the pigment filler used is a mixture of titanium dioxide and wollastonite; the crosslinking agent used is methyltrimethoxysilane; the catalyst used is benzyltrimethylammonium acetate; and the third solvent is 4-methyl-2-pentanone.

[0059] Among them, the formula of the raw materials of the silane coupling agent (E-IPTS) grafted with antifouling groups in the embodiments and comparative examples is shown in Table 2 below:

[0060] Table 2

[0061]

[0062]

[0063] In Table 2, IPTS is 3-isocyanatepropyltriethoxysilane; and the first solvent is xylene.

[0064] The preparation process of the silane coupling agent (E-IPTS) grafted with antifouling groups in Examples 1-4 is as follows:

[0065] A certain weight of bromopyrrolecarbonitrile (ECONEA) was dissolved in xylene in a three-necked flask, and the flask was heated to 50°C. At the same time, 3-isocyanatepropyltriethoxysilane was slowly added dropwise under the protection of nitrogen. After reacting for 4.5 hours, heating was stopped to obtain a yellow product E-IPTS containing solvent.

[0066] The preparation process of the amphiphilic fouling-releasing antifouling coating grafted with antifouling groups in Examples 1-4 is as follows:

[0067] The raw material components of the component A are mixed evenly according to a certain weight ratio to obtain the component A; the raw material components of the component B are mixed evenly to obtain the component B; the raw material components of the component C are mixed evenly to obtain the component C; the component A, the component B and the component C are added to a dispersion tank respectively, and dispersed at 1500r / min for 20 minutes to obtain an amphiphilic fouling-releasing antifouling coating grafted with antifouling groups; wherein the mixing is carried out according to a mass ratio of component A: component B: component C of 100:10:3.

[0068] Among them, the difference between the comparative example and the embodiment is:

[0069] Comparative Example 1:

[0070] It is an existing comparative sample (Comparative Example 1 is a pure silicon-based fouling-releasing coating commercially available from a foreign company).

[0071] Comparative Example 2:

[0072] In Comparative Example 2, the preparation of the silane coupling agent (E-IPTS) grafted with an antifouling group is not carried out, and the silane coupling agent of the antifouling group in Example 2 is directly replaced by bromopyrrolecarbonitrile, 3-isocyanatepropyltriethoxysilane and xylene in an amount equal to that in Example 2. The preparation process of the coating is the same as that in Example 2, except that the silane coupling agent of the antifouling group in Example 2 is directly replaced by bromopyrrolecarbonitrile, 3-isocyanatepropyltriethoxysilane and xylene in an amount equal to that in Example 2.

[0073] The raw material component formula of Comparative Example 3 is:

[0074] In terms of weight, the component A includes 40 parts of silanol-terminated polysiloxane PDMS, 5 parts of silicon dioxide, 27 parts of the second solvent, and 3 parts of pigments and fillers; the component B includes 25 parts of a silane coupling agent grafted with an antifouling group and 25 parts of a crosslinking agent; the component C includes 30 parts of a catalyst and 40 parts of a third solvent. The difference between the embodiment and the embodiment is that the component A uses PDMS instead of the F-PDMS of the embodiment, and the component B does not add NPTS; except for the above differences, the preparation conditions of other silane coupling agents grafted with antifouling groups and the preparation conditions of the coating are consistent with those of embodiment 2.

[0075] The performance tests of the above embodiments and comparative examples are as follows:

[0076] The above-mentioned embodiments and comparative examples were tested by mixing component A: component B: component C = 100:10:3 (mass ratio). The test results are shown in Table 3-4.

[0077] Table 3

[0078]

[0079]

[0080] The thickness of the applied coating is 150 microns.

[0081] Table 4 Qianhai board hanging results (6 months)

[0082] Test items Example 1 Example 2 Example 3 Example 4 score 90 92 91 89 Test items Comparative Example 1 Comparative Example 2 Comparative Example 3 - score 79 81 80 -

[0083] Among them, the tests in Table 3-4 were conducted in accordance with the national standard GB / T 5370-2007 "Shallow Sea Immersion Test Method for Antifouling Paint Samples". The shallow sea hanging results are used to evaluate the antifouling performance of the coating, with a full score of 100. The higher the score, the better the antifouling performance.

[0084] Analysis of the above comparative examples and embodiment data shows that:

[0085] (1) Figure 1The physical state comparison diagram of the silane coupling agent of the brominated pyrrole nitrile and the isocyanate silane coupling agent modified brominated pyrrole nitrile to obtain the grafted antifouling group in Example 1 is shown. Figure 1 It can be seen that the silane coupling agent grafted with antifouling groups is light yellow in color and the liquid is clear and uniform.

[0086] The results in Table 3 show that the coating prepared in the embodiment of the present invention is hydrophobic. After being immersed in seawater, the contact angles of all samples decrease very slightly. The structural rearrangement of the polymer in water causes a small amount of polar groups to migrate to the surface, thereby slightly increasing the hydrophilicity. After a period of time, the surface hydrophobicity of the coating prepared can be maintained stable for a long time after being immersed in seawater. In summary, it is shown that the amphiphilic fouling-release antifouling coating grafted with antifouling groups in the embodiment of the present invention has a good antifouling effect.

[0087] (2) Compared with the embodiment, the shallow sea hanging board result score of the sample in comparative example 1 is less than 85 points, indicating that its antifouling effect is poor.

[0088] (3) Compared with the example, the antifouling property of the sample in comparative example 2 failed.

[0089] (4) Compared with the examples, the antifouling property of the sample in comparative example 3 failed.

[0090] In summary, the amphiphilic fouling-releasing antifouling coating with grafted antifouling groups provided by the present invention has at least the following design concepts and beneficial effects:

[0091] The scheme of the present invention is as follows: firstly, a silanized antifouling agent E-isocyanate silane coupling agent (E-IPTS) is prepared by using an isocyanate silane coupling agent (IPTS) and bromopyrrole carbonitrile (ECONEA); then, raw materials such as silanol-terminated fluorinated polysiloxane F-PDMS, a silane crosslinking agent, N,N-dimethyl-3-aminopropyltrimethoxysilane (NPTS) and E-IPTS are mixed in a specific ratio to prepare an amphiphilic fouling-release antifouling coating grafted with an antifouling group;

[0092] The schematic diagram of the antifouling principle of the amphiphilic fouling-release coating grafted with antifouling groups is shown in FIG. Figure 2 As shown: the coating made of the paint has grafted antifouling groups and is amphiphilic, which can effectively resist and peel off marine organisms.

[0093] The coating of the present invention has an antifouling agent grafted onto a coupling agent and solidified into the coating together with other components of the coating. Therefore, the antifouling agent of the coating as a whole will not be released into the marine environment, and the coating is safe and environmentally friendly.

[0094] In summary, the coating formed by the coating prepared by the above technical solution produces the following positive effects: the coating is grafted with antifouling groups and has amphiphilicity, and has good antifouling performance for low-speed ships, ships that have been parked for a long time, and marine facilities under static conditions. At the same time, it will not be released into the marine environment, and is an environmentally friendly antifouling material.

[0095] It should be noted that:

[0096] In addition to the actual selections embodied in the above specific embodiments, the coating formula is as follows by weight: the component A includes 40-60 parts of fluorinated polysiloxane terminated with silanol, 3-6 parts of silicon dioxide, 10-30 parts of the second solvent, and 0-4 parts of pigments and fillers; the component B includes 20-40 parts of N,N-dimethyl-3-aminopropyltrimethoxysilane, 20-50 parts of silane coupling agent grafted with antifouling groups, and 0-50 parts of crosslinking agent; the component C includes 30-50 parts of catalyst and 30-50 parts of the third solvent. The above formula ranges are all feasible when the present invention is implemented, including but not limited to the above embodiment scheme.

[0097] Among them, in addition to the actual selection embodied in the above specific embodiments, the preparation process parameters of the silane coupling agent grafted with antifouling groups are: the weight ratio of isocyanate silane coupling agent, bromopyrrole carbonitrile, and the first solvent is (20-40): (30-50): (20-40); the heating reaction temperature is 40-60°C, and the reaction time is 3-6h. In specific implementation, the above parameter ranges are all feasible, including but not limited to the above embodiment scheme.

[0098] In addition to the actual selections embodied in the above specific embodiments, preferably, the isocyanate silane coupling agent is selected from one or a combination of 3-isocyanate propyl triethoxysilane and 3-isocyanate propyl trimethoxysilane; the protective atmosphere is selected from one of nitrogen and helium atmospheres. The first solvent is selected from one or more combinations of aromatic hydrocarbon solvents, ester solvents, and ketone solvents; the second solvent is selected from one or more combinations of aromatic hydrocarbon solvents, ketone solvents, and ester solvents; the third solvent is selected from one or more combinations of aromatic hydrocarbon solvents, ketone solvents, and ester solvents. The cross-linking agent is selected from one or more combinations of ethyl silicate, propyl silicate, methyltrimethoxysilane, methyltriethoxysilane, methyltriacetoxysilane, vinyltriacetoxysilane, methyltributylidene oxime silane, and tetrakis(methylethylketoxime)silane; the silicon dioxide is selected from a surface area greater than 10m 2 / g of silicon dioxide; the pigment filler is selected from one or more combinations of titanium dioxide, iron yellow, iron red, carbon black, silicate, barium sulfate, and silica; the catalyst is selected from one or more combinations of metal salts of organic carboxylic acids, amine compounds and their salts, and quaternary ammonium salts, including but not limited to the actual selections embodied in the above embodiments;

[0099] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An amphiphilic fouling-releasing antifouling coating grafted with an antifouling group, characterized in that: It includes component A, component B and component C; The raw material components of the component A include silanol-terminated fluorinated polysiloxane, silicon dioxide, and a second solvent; The raw material components of the second component include N, N-dimethyl-3-aminopropyltrimethoxysilane and a silane coupling agent grafted with an antifouling group; The raw material components of the third component include a catalyst and a third solvent; The silane coupling agent grafted with antifouling groups is prepared by heating bromopyrrole nitrile and isocyanate silane coupling agent in a first solvent; the weight ratio of the isocyanate silane coupling agent, bromopyrrole nitrile and the first solvent is (20-40): (30-50): (20-40); The preparation process of the silane coupling agent grafted with antifouling groups is as follows: dissolving the bromopyrrole carbonitrile in a first solvent, heating the reaction system to 40-60° C., adding an isocyanate silane coupling agent under a protective atmosphere, and heating the reaction at 40-60° C. for 3-6 hours to obtain the silane coupling agent grafted with antifouling groups; wherein the isocyanate silane coupling agent is one of 3-isocyanate propyl triethoxysilane and 3-isocyanate propyl trimethoxysilane or a combination of two; and the protective atmosphere is one of nitrogen and helium atmospheres; In parts by weight, the component A comprises 40 to 60 parts of silanol-terminated fluorinated polysiloxane, 3 to 6 parts of silicon dioxide, 10 to 30 parts of a second solvent, and 0 to 4 parts of a pigment and filler; The second component includes 20 to 40 parts of N,N-dimethyl-3-aminopropyltrimethoxysilane, 20 to 50 parts of a silane coupling agent grafted with an antifouling group, and 0 to 50 parts of a crosslinking agent; The component C includes 30 to 50 parts of a catalyst and 30 to 50 parts of a third solvent; The structural formula of the silanol-terminated fluorinated polysiloxane is: Its molecular weight is 2000~150000, x=1~30, y=1~300, n=0~10.

2. The amphiphilic fouling-releasing antifouling coating with grafted antifouling groups according to claim 1, characterized in that: The first solvent is one or more combinations of aromatic hydrocarbon solvents, ester solvents, and ketone solvents; The second solvent is one or more of an aromatic hydrocarbon solvent, a ketone solvent, and an ester solvent; The third solvent is one or more of an aromatic hydrocarbon solvent, a ketone solvent, and an ester solvent.

3. The amphiphilic fouling-releasing antifouling coating with grafted antifouling groups according to claim 1, characterized in that: The crosslinking agent is one or more combinations of ethyl silicate, propyl silicate, methyltrimethoxysilane, methyltriethoxysilane, methyltriacetoxysilane, vinyltriacetoxysilane, methyltributylacetoximosilane, and tetrakis(methylethylketoxime)silane; The surface area of ​​the silicon dioxide is greater than 10 m 2 / g; The pigment filler is one or more combinations of titanium dioxide, iron yellow, iron red, carbon black, silicate, barium sulfate, and silica; The catalyst is one or more combinations of metal salts of organic carboxylic acids, amine compounds and salts thereof, and quaternary ammonium salts.

4. The amphiphilic fouling-releasing antifouling coating with grafted antifouling groups according to claim 2, characterized in that: The aromatic hydrocarbon solvent is one or a combination of toluene, xylene, and trimethylbenzene; The ketone solvent is one or a combination of two of methyl ethyl ketone, butanone, cyclohexanone, and 4-methyl-2-pentanone; The ester solvent is one of butyl acetate and ethyl acetate or a combination of the two.

5. A method for preparing an amphiphilic fouling-releasing antifouling coating grafted with an antifouling group as claimed in any one of claims 1 to 4, characterized in that: The following steps are involved: Mixing the raw material components of the component A uniformly according to a certain weight ratio to obtain the component A; Mixing the raw material components of component B uniformly according to a certain weight ratio to obtain component B; Mixing the raw material components of component C uniformly according to a certain weight ratio to obtain component C; The component A, the component B and the component C are mixed evenly to obtain an amphiphilic fouling-releasing antifouling coating with grafted antifouling groups.

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