An enzyme-containing silicone antifouling coating and a method for preparing the same

Abstract

The present application belongs to the technical field of antifouling coating, and particularly relates to an enzyme-containing organic silicon fouling release type antifouling coating and a preparation method thereof. The coating is mainly composed of amphiphilic functional polymer and antifouling enzyme. The antifouling enzyme is fixed by the amphiphilic functional polymer containing amino groups, and the antifouling enzyme is kept active by the hydrophilic property of the amphiphilic functional polymer. The enzyme-containing organic silicon fouling release type antifouling coating is prepared by adding the amphiphilic functional polymer immobilized antifouling enzyme into an organic silicon elastomer system. The organic silicon chain segment is used as an oleophilic part, and the antifouling enzyme is used in combination with the amphiphilic functional polymer. The stability of the antifouling enzyme in the organic solvent system and the seawater environment is ensured, the organic silicon elastomer coating has good antifouling performance and good environmental friendliness, the antifouling performance is further improved, the enzyme immobilization technology can be applied to the surface antifouling of marine ships and structures, and the enzyme immobilization technology can be applied to the pharmaceutical industry and daily chemical industry.

Description

Technical fields:

[0001] This invention belongs to the field of antifouling coating technology, specifically relating to an enzyme-containing organosilicon fouling-releasing antifouling coating and its preparation method. The antifouling enzyme, which is fixed by an amphiphilic functional polymer, is introduced into the organosilicon fouling-releasing antifouling coating to improve its antifouling performance. Background technology:

[0002] Given the serious harm that marine biofouling causes to ships and the impending bans and restrictions on the use of traditional toxic antifouling coatings, the development of environmentally friendly antifouling materials has promising application prospects and significant environmental and ecological implications. Currently, research on environmentally friendly antifouling materials mainly focuses on two approaches: one is to find and utilize suitable biofouling agents to prevent biofouling without harming the environment; the other is to develop fouling-release antifouling materials, which utilize the surface and bulk properties of the material itself to prevent fouling organisms from adhering firmly or sticking to the material surface, thus achieving the purpose of antifouling.Organosilicon fouling release antifouling coatings, due to their non-consumption nature, smoothness, and low elastic modulus, possess long-lasting antifouling performance and have become an important development direction for marine antifouling materials. For example, Chinese Patent 202011017697.5 discloses a marine antifouling coating, which, by weight, includes (1) 10-20 parts of component A; (2) 2-4 parts of component B; and (3) 0.5-1 parts of component C. Component A, by weight, includes: 40.0-50.0 parts of pre-dispersed slurry, 2.0-5.0 parts of non-reactive silicone oil, 0.1-1.0 parts of additives, 0.0-2.5 parts of filler, and 10.0-15.0 parts of solvent. Component B, by weight, includes: 1.5-1 parts of crosslinking curing agent. 5.0 parts, solvent 5.0-15.0 parts; Component C by weight includes: catalyst 0.5-2.5 parts, solvent 2.0-8.0 parts; wherein, the pre-dispersed slurry is obtained by ultrasonic dispersion of the following raw materials in the following weight parts: polysiloxane resin 80.0-100.0 parts, stabilized carbon nanotubes 0.5-2.0 parts, stabilized spherical nano-iron oxide 0.1-1.0 parts; the pre-dispersed slurry is prepared by ultrasonically dispersing 80.0-100.0 parts of polysiloxane resin and 0.5-2.0 parts of stabilized carbon nanotubes at 1000-1500 rpm for 15-30 min, then reducing the speed to 500-800 rpm, and adding 0 The stabilized nano-iron oxide (Fe3O4) was obtained by ultrasonically dispersing 0.1-1.0 parts of stabilized nano-iron oxide for 20-30 min; the stabilized carbon nanotubes were obtained by adding 0.5-2.0 parts of carbon nanotubes to 50-75 parts of 0.5 mol / L sodium citrate solution, ultrasonically dispersing for 50-70 min, filtering, and vacuum drying; the stabilized nano-iron oxide (Fe3O4) was obtained by adding 0.1-1.0 parts of spherical nano-iron oxide to 50-75 parts of 0.5 mol / L sodium citrate solution, ultrasonically dispersing for 50-70 min, filtering, and vacuum drying; the polysiloxane resin was α,ω-dihydroxypolysiloxane or α,ω-dihydroxypolydimethylsiloxane. The product comprises at least one of α,ω-dihydroxy polymethylsiloxane resin; the non-reactive silicone oil comprises at least one of methyl silicone oil, methylphenyl silicone oil and methylalkyl silicone oil; the crosslinking curing agent comprises at least one of tetraethyl orthosilicate, methyltriacetoxysilane, aminopropyltriethoxysilane and methyltributanone oxime silane; the catalyst comprises at least one of dibutyltin dicarboxylate, stannous octoate and organobismuth; Component A is prepared by the following steps: the pre-dispersed slurry and non-reactive silicone oil are ultrasonically dispersed at 500-800 rpm for 5-15 min, and then the speed is increased to 1000-1500 rpm, and the additives, fillers and solvents are added in sequence, and ultrasonic dispersion is continued for 15-30 min.Chinese Patent 202311286823.0 discloses a fouling-releasing marine antifouling coating based on intrinsic affinity, comprising the following components by weight: 0.5-2 parts of soft nanoparticles, 10-20 parts of quaternary ammonium salt modified acrylamide-modified MQ type silicone resin, and 40-60 parts of ethanol / water mixture; wherein, the soft nanoparticles are prepared by the following steps: (1) ultrasonically treating nano-silica to disperse it in an ethanol solution; (2) in a reaction vessel under nitrogen protection, the nano-silica / ethanol solution prepared in step (1), the N,N-dimethylformamide solution of aminopyridine, the silane coupling agent with amino group, and the succinic anhydride are added sequentially and reacted at 60-70°C for 10-16 hours; (3) the nanoparticles in the reaction product are collected by centrifugation, and the residual reactants are removed by multiple ethanol washings, and the soft nanoparticles are obtained after natural evaporation and drying. Chinese Patent 202010494091.4 discloses an organosilicon-modified epoxy coating with both anti-corrosion and transition bonding functions. It comprises component A and component B in a weight ratio of 100:5-15. Component A consists of 30-50% matrix resin, 3-7% adhesion promoter, 0.1-0.7% rheology modifier, 25-35% pigments and fillers, and 25-45% solvent. Component B consists of 2-5% organosiloxane oligomer and 1-3% silane coupling agent. The matrix resin is a mixture of organosilicon-modified epoxy vinyl ester resin and epoxy resin. The organosilicon-modified epoxy vinyl ester resin is a polymer resin obtained by free radical polymerization of epoxy vinyl ester resin and a silane coupling agent containing double bonds. The epoxy vinyl ester resin is one of bisphenol A epoxy vinyl ester resin, bisphenol F epoxy vinyl ester resin, and phenolic epoxy vinyl ester resin. The silane coupling agent containing double bonds... The silicone-modified epoxy vinyl ester resin is one or more of vinyltrimethoxysilane, vinyltriethoxysilane, p-styrenetrimethoxysilane, 3-isobutenyltrimethoxysilane, 3-isobutenyltriethoxysilane, and 3-propenylpropyltrimethoxysilane. The specific preparation process is as follows: 30-45% organic solvent is added to a four-necked flask equipped with a thermometer, condenser, and stirrer. The system is heated to 90-110°C. 35-45% epoxy vinyl ester resin, 15-20% silane coupling agent containing double bonds, and 0.3-0.7% initiator are added to the four-necked flask at a certain dropping rate within 2 hours. The mixture is kept at this temperature for 1 hour. Then, 0.05-0.07% initiator and 2-5% solvent are added a second time, completing the addition within 0.5 hours. The mixture is kept at this temperature for 2 hours, cooled, and discharged to obtain the silicone-modified epoxy vinyl ester resin. However, silicone fouling release antifouling coatings have weak antifouling performance in static environments. Introducing environmentally friendly bio-antifouling agents into silicone fouling release antifouling coatings can improve their static antifouling performance.

[0003] Enzymes, as proteins, are considered virtually harmless to the environment in industrial applications. Antifouling enzymes can be broadly classified into two categories: direct antifouling and indirect antifouling. Direct antifouling refers to the enzyme directly acting on fouling organisms to achieve antifouling; indirect antifouling refers to the enzyme decomposing other substrates to produce antifouling active substances, thereby inhibiting or killing fouling organisms. To maintain enzyme activity, antifouling enzymes are usually immobilized. Common immobilization methods for antifouling enzymes are classified according to the force of action into physical adsorption, encapsulation, cross-linking, and covalent bonding. Immobilization carriers for antifouling enzymes are mainly divided into two categories: inorganic carriers and organic carriers. To address the issue of antifouling enzymes being easily deactivated in antifouling coatings (organic solvents) and seawater environments, an enzyme-containing organosilicon fouling-releasing antifouling coating and its preparation method were developed. An amphiphilic functional polymer was used to immobilize the antifouling enzyme, utilizing its hydrophilicity to maintain its activity. The amphiphilic functional polymer-immobilized antifouling enzyme was introduced into an organosilicon system to prepare a fouling-releasing antifouling coating, thereby improving antifouling performance. Summary of the Invention:

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and to develop and design an enzyme-containing organosilicon fouling-releasing antifouling coating and its preparation method. Through the compound combination of antifouling enzymes and amphiphilic functional polymers, the organosilicon elastomer coating has good antifouling performance and environmental friendliness.

[0005] To achieve the above objectives, the enzyme-containing organosilicon fouling-releasing antifouling coating of the present invention is mainly composed of an amphiphilic functional polymer and an antifouling enzyme. The amphiphilic functional polymer is prepared from hydrosilicone oil, polyethylene glycol containing active double bonds or betaine compounds containing active double bonds, and amine compounds containing active double bonds. The hydrosilicone oil is the main backbone component, and the antifouling enzyme is immobilized by grafting polyethylene glycol containing active double bonds or betaine compounds containing active double bonds and amine compounds onto its main chain via dispersed silicon-hydrogen bonds. The antifouling enzyme includes protease, ...

[0006] Amylase, chitinase, and lysozyme; among which, polyethylene glycols containing active double bonds include polyethylene glycol acrylate and vinyl-terminated polyethylene glycol, and betaine compounds containing active double bonds include methacryloyloxyethyl dimethylacetate ammonium, methacryloylethyl sulfobetaine, and 1-

[0007] (3-Thiopropyl)-2-vinylpyridine betaine contains active double-bonded amine compounds including acrylamide, methacrylamide, N-ethylacrylamide, N-butylacrylamide, N-hydroxyacrylamide, N-hydroxyethylacrylamide, N-benzylacrylamide, N-phenylacrylamide, and N-methyl-2-acrylamide.

[0008] The amphiphilic functional polymer involved in this invention uses polydimethylsiloxane segments as the oleophilic (hydrophobic) portion, polyethylene glycol containing active double bonds or betaine compounds containing active double bonds as the hydrophilic portion, and amine compounds containing active double bonds as the antifouling enzyme immobilization group. It has two functions: first, it forms a microphase-separated, biodegradable surface on the antifouling coating surface through the difference in compatibility of its own segments, and inhibits the adhesion of fouling organisms or reduces their adhesion strength through the hydration layer; second, it ensures the stability of the antifouling enzyme in the organic solvent system (antifouling coating) through the trace amount of water contained in the hydrophilic portion.

[0009] The structural formula of the amphiphilic functional polymer involved in this invention is as follows: Figure 1 As shown, where:

[0010] R1 is a side chain group generated by the hydrosilylation reaction of active hydrogen in side chain hydrogen-containing silicone oil with active double bond polyethylene glycol or active double bond betaine compound.

[0011] R2 is a side chain group generated by the hydrosilylation reaction of active hydrogen in side-chain hydrogen-containing silicone oil with active double-bonded amine compounds.

[0012] The specific process of the method for preparing the enzyme-containing silicone fouling-releasing antifouling coating involved in this invention includes three steps: preparing an antifouling enzyme immobilizer—an amino-containing amphiphilic functional polymer, preparing an amphiphilic functional polymer to immobilize the antifouling enzyme, and preparing an enzyme-containing silicone fouling-releasing antifouling coating.

[0013] (I) Preparation of antifouling enzyme immobilizer - Amino-containing amphiphilic functional polymer

[0014] First, mix 20-50 parts by weight of organic solvent, 1-10 parts by weight of polyethylene glycol or betaine compound containing active double bonds, 1-5 parts by weight of amine compound containing active double bonds, and 0.01-0.5 parts by weight of hydrosilylation catalyst, stir, and adjust the temperature to 10-25℃.

[0015] Then, slowly add 20-40 parts by weight of hydrogen-containing silicone oil and allow it to react for 0.5-2 hours;

[0016] Finally, the temperature was adjusted to 40℃ and the reaction was continued for 2-24 hours to obtain an amphiphilic functional polymer with the function of fixing antifouling enzymes.

[0017] Among them, the hydrosilylation catalysts are platinum-based catalysts, including chloroplatinic acid catalysts and cassiterite catalysts;

[0018] When polyethylene glycol containing active double bonds is used as the hydrophilic substance, the organic solvents include xylene, toluene, tetrahydrofuran, and isopropanol;

[0019] When a betaine compound containing an active double bond is used as a hydrophilic substance, the organic solvent is a mixture of methanol and tetrahydrofuran in a volume ratio of 1:5 to 5:1, preferably 2:3.

[0020] (II) Preparation of amphiphilic functional polymer-immobilized antifouling enzyme

[0021] First, the organic solvent of the amphiphilic functional polymer is evaporated and added to phosphate buffer. Then, a 5% (w / w) aqueous solution of glutaraldehyde is added. After 5 hours, the mixture is washed with phosphate buffer to remove residual glutaraldehyde.

[0022] Then, the amphiphilic functional polymer that has been cross-linked with glutaraldehyde is immersed again in phosphate buffer, and then a 5-30% (w / w) antifouling enzyme aqueous solution is added. The mixture is stirred for 5 hours at a temperature of 3-20°C.

[0023] Finally, the sample was washed with phosphate buffer and freeze-dried to obtain an amphiphilic functional polymer-immobilized antifouling enzyme.

[0024] (III) Preparation of enzyme-containing organosilicon fouling-releasing antifouling coating

[0025] First, 25-50 parts by weight of hydroxyl silicone oil with a viscosity of 2000-150000 centipoise, 1-5 parts by weight of pigment, 2-20 parts by weight of filler, 1-8 parts by weight of amphiphilic functional polymer immobilized antifouling enzyme, 1-5 parts by weight of antifouling additive, and 25-60 parts by weight of solvent are added to a grinding and dispersing vessel. The grinding and dispersing vessel is cooled by circulating water at a temperature of 1-10℃. The mixture is rapidly ground and dispersed. When the fineness reaches below 60μm, the material is discharged to obtain the main component coating.

[0026] Then, 3-5 parts by weight of curing agent, condensation reaction catalyst and 1-2 parts by weight of solvent are mixed and the cured component coating is prepared by rapid dispersion;

[0027] Finally, the main component coating and the curing component coating are mixed in a set ratio and applied by brushing or other methods to obtain an enzyme-containing silicone fouling-releasing antifouling coating.

[0028] The antifouling additives are commercially available antifouling agents, including Sea-nine 211, Econea, copper pyridine sulfate, and zinc pyridine sulfate; the curing agents include tetraethyl orthosilicate and its condensate and tributanone oxime silane; the condensation reaction catalyst accounts for 0.01%-2% of the total solid components of the curing component and is an organotin catalyst, including dioctyltin dilaurate; the solvents include toluene and xylene.

[0029] The presence and content of amphiphilic functional polymers affect the moisture content in enzyme-containing silicone fouling-releasing antifouling coatings, thus regulating the migration and release of antifouling additives.

[0030] Compared with existing technologies, this invention immobilizes antifouling enzymes using amphiphilic functional polymers containing amino groups. The hydrophilic properties of these polymers maintain the enzymes' activity. The immobilized antifouling enzymes are then incorporated into an organosilicon elastomer system to prepare an enzyme-containing organosilicon fouling-releasing antifouling coating. The organosilicon segments serve as the lipophilic portion. The antifouling enzymes and amphiphilic functional polymers are used in combination. On one hand, the hydrophilic portion of the amphiphilic polymer ensures the stability of the antifouling enzymes in organic solvent systems and seawater environments. On the other hand, the combination of the antifouling enzymes and the amphiphilic functional polymers... The combination of compounds not only gives the silicone elastomer coating good antifouling performance but also good environmental friendliness, further enhancing its antifouling performance. It is a silicone fouling-releasing antifouling coating prepared with polydimethylsiloxane as the main component, an amphiphilic functional polymer with immobilized antifouling enzymes as the main antifouling substance, and antifouling additives. It can be applied to the surface antifouling of marine ships and structures (such as docks, drilling platforms, piers, piles, etc.). The enzyme immobilization technology can be applied to industries such as pharmaceuticals and daily chemicals, and has good application development prospects and potential economic benefits. Attached image description:

[0031] Figure 1 The present invention relates to the structural formula of the amphiphilic functional polymer.

[0032] Figure 2 The present invention relates to the structural formula of a polyethylene glycol-type amino-containing amphiphilic functional polymer.

[0033] Figure 3 The present invention relates to the structural formula of a betaine-type amino-containing amphiphilic functional polymer. Specific implementation methods:

[0034] The present invention will be further described below with reference to the accompanying drawings and specific implementation methods.

[0035] Example 1:

[0036] The specific process of preparing the enzyme-containing organosilicon fouling-releasing antifouling coating involved in this embodiment is as follows:

[0037] (I) Preparation of antifouling enzyme fixative - amino-containing amphiphilic functional polymer

[0038] Amphiphilic functional polymers include polyethylene glycol-type amino-containing amphiphilic functional polymers and betaine-type amino-containing amphiphilic functional polymers, whose structural formulas are as follows: Figure 2 and Figure 3 As shown;

[0039] The preparation process of polyethylene glycol-type amino-containing amphiphilic functional polymers is as follows:

[0040] Add 50 parts by mass of xylene, 5 parts by mass of polyethylene glycol acrylate, 1 part by mass of methacrylamide and 0.01 parts by mass of caster catalyst to the reaction vessel, stir, and adjust the temperature to 20°C;

[0041] 20 parts by weight of hydrogen-containing silicone oil were slowly added dropwise to the reaction vessel and allowed to react for 2 hours.

[0042] The temperature was adjusted to 40℃, and the reaction was continued for 24 hours to obtain a polyethylene glycol-type amino-containing amphiphilic functional polymer.

[0043] The preparation process of betaine-type amino-containing amphiphilic functional polymers is as follows:

[0044] Add 20 parts by mass of an organic solvent formed by a mixture of methanol and tetrahydrofuran, 1 part by mass of 1-(3-thiopropyl)-2-vinylpyridine betaine, 5 parts by mass of acrylamide and 0.5 parts by mass of chloroplatinic acid catalyst to the reaction vessel, stir, and adjust the temperature to 10°C.

[0045] 40 parts by weight of hydrogen-containing silicone oil were slowly added dropwise to the reaction vessel, and the reaction was allowed to proceed for 0.5 hours.

[0046] The temperature was adjusted to 40℃ and the reaction was continued for 2 hours to obtain a betaine-type amino-containing amphiphilic functional polymer.

[0047] The volume ratio of methanol to tetrahydrofuran is 2:3.

[0048] (II) Preparation of amphiphilic functional polymer-immobilized antifouling enzyme

[0049] The organic solvent in 5 parts by mass of polyethylene glycol-type amino-amphiphilic functional polymer or betaine-type amino-amphiphilic functional polymer is evaporated and added to 50 parts by mass of phosphate buffer. Then, glutaraldehyde aqueous solution with a mass percentage concentration of 5% is added. After 5 hours, the mixture is washed 3 times with phosphate buffer to remove residual glutaraldehyde.

[0050] The amphiphilic functional polymer that has been cross-linked with glutaraldehyde was immersed again in phosphate buffer, and then 3 parts by weight of 30% alkaline protease aqueous solution were added. The mixture was stirred at 3°C ​​for 5 hours.

[0051] The sample was washed three times with phosphate buffer and then freeze-dried in a vacuum freeze dryer to obtain an amphiphilic functional polymer-immobilized antifouling enzyme.

[0052] (III) Preparation of enzyme-containing organosilicon fouling-releasing antifouling coating

[0053] 50 parts by weight of hydroxyl silicone oil with a viscosity of 2000 centipoise, 5 parts by weight of iron oxide red pigment, 10 parts by weight of fumed silica filler, 5 parts by weight of nano-calcium carbonate filler, 5 parts by weight of amphiphilic functional polymer immobilized antifouling enzyme, 1 part by weight of Econe antifouling additive, and 50 parts by weight of xylene were added to a grinding and dispersing vessel. The grinding and dispersing vessel was cooled by circulating water at a temperature of 1°C. The mixture was rapidly ground and dispersed. After grinding for 1 hour, the fineness was checked every 15 minutes using a scraper fineness meter. When the fineness reached 50 μm, the mixture was discharged and packaged into barrels to obtain the main component coating, which was then stored in a cold room (or a light-proof, room-temperature warehouse).

[0054] Add 5 parts by weight of tetraethyl orthosilicate, 2% by weight of dioctyltin dilaurate and 2 parts by weight of xylene to a dispersion tank, stir for 5 minutes using a disperser, discharge and pack into a barrel to obtain the cured component coating.

[0055] The main component coating and the curing component coating are mixed in a set ratio and then applied by brushing to obtain an enzyme-containing silicone fouling-releasing antifouling coating. It can quickly absorb water in seawater, providing a suitable working environment for the antifouling enzymes and allowing them to fully exert their antifouling performance.

Claims

1. An enzyme-containing organosilicon fouling-releasing antifouling coating, characterized in that, This product is prepared using polydimethylsiloxane hydroxyl silicone oil as the main component, immobilized with an amphiphilic functional polymer and antifouling enzymes as the main antifouling substance, combined with antifouling additives. The amphiphilic functional polymer is prepared from hydrogen-containing silicone oil, betaine compounds containing active double bonds, and amine compounds containing active double bonds. The side chain groups of the amphiphilic functional polymer are generated by hydrosilylation reaction. The betaine compounds containing active double bonds include methacryloyloxyethyl dimethylacetamide, methacryloylethyl sulfobetaine, and 1-(3-thiopropyl)-2-vinylpyridine betaine. The amine compounds containing active double bonds include acrylamide, methacrylamide, N-ethylacrylamide, N-butylacrylamide, N-hydroxyacrylamide, N-hydroxyethylacrylamide, N-benzylacrylamide, N-phenylacrylamide, and N-methyl-2-acrylamide. The antifouling enzymes include protease, amylase, chitinase, and lysozyme.

2. The enzyme-containing organosilicon fouling-releasing antifouling coating according to claim 1, characterized in that, The structural formula of the amphiphilic functional polymer is: Wherein, R1 is a side chain group generated by the hydrosilylation reaction of active hydrogen in side chain hydrogen-containing silicone oil with active betaine compound containing active double bond; R2 is a side chain group generated by the hydrosilylation reaction of active hydrogen in side chain hydrogen-containing silicone oil with active amine compound containing active double bond.

3. The enzyme-containing organosilicon fouling-releasing antifouling coating according to claim 1, characterized in that, The preparation process of amphiphilic functional polymers is as follows: First, the organic solvent, the betaine compound containing an active double bond, the amine compound containing an active double bond, and the hydrosilylation catalyst are mixed and stirred. Then, adjust the temperature to 10-25℃ and add hydrogen-containing silicone oil dropwise to allow it to react; Finally, the temperature was adjusted to 40℃ and the reaction was continued for 2-24 hours to obtain an amphiphilic functional polymer with the function of fixing antifouling enzymes.

4. The enzyme-containing organosilicon fouling-releasing antifouling coating according to claim 3, characterized in that, The process of immobilizing antifouling enzymes with amphiphilic functional polymers is as follows: First, the organic solvent of the amphiphilic functional polymer is evaporated, added to phosphate buffer, and then glutaraldehyde aqueous solution is added. After 5 hours, it is washed with phosphate buffer. Then, the amphiphilic functional polymer that has been cross-linked with glutaraldehyde is immersed again in phosphate buffer, and then an antifouling enzyme aqueous solution is added. The mixture is stirred for 5 hours at a temperature of 3-20℃. Finally, the sample was washed with phosphate buffer and freeze-dried to obtain amphiphilic functional polymer-immobilized antifouling enzyme.

5. The enzyme-containing organosilicon fouling-releasing antifouling coating according to claim 4, characterized in that, The preparation process of the enzyme-containing organosilicon fouling-releasing antifouling coating is as follows: First, hydroxyl silicone oil, pigments, fillers, amphiphilic functional polymer-immobilized antifouling enzymes, antifouling additives, and solvents are mixed and ground and dispersed under circulating water cooling conditions. When the fineness reaches the set requirements, the material is discharged to obtain the main component coating. Then, the curing agent, condensation reaction catalyst and solvent are mixed and the cured component coating is prepared by rapid dispersion; Finally, the main component coating and the curing component coating are mixed in a set ratio to prepare an enzyme-containing organosilicon fouling-releasing antifouling coating.

6. The enzyme-containing organosilicon fouling-releasing antifouling coating according to claim 3, characterized in that, The hydrosilylation catalyst is a platinum-based catalyst, including chloroplatinic acid catalyst and cassiterite catalyst; the organic solvent is a solvent formed by mixing methanol and tetrahydrofuran in a volume ratio of 1:5 to 5:

1.

7. The enzyme-containing organosilicon fouling-releasing antifouling coating according to claim 5, characterized in that, The curing agent includes tetraethyl orthosilicate and its condensate and tributyl ketone oxime silane; the condensation reaction catalyst accounts for 0.01%-2% of the total solid component mass of the curing component and is an organotin catalyst; the solvent includes toluene and xylene.

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