Antifouling and anticorrosive coating as well as preparation method and application thereof
By preparing polyoxime ester and modifying it into an antifouling and anticorrosive coating, the problems of performance degradation and insufficient antibacterial properties of polyurethane at high temperatures were solved, achieving a highly efficient antifouling and anticorrosive effect, which is suitable for industrial production.
Patent Information
- Application Number
- CN202511006305.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-21
- Publication Date
- 2025-11-11
AI Technical Summary
Existing polyurethane materials are prone to thermal oxidation degradation at high temperatures, resulting in decreased mechanical properties. They also lack antibacterial properties and are susceptible to bacterial growth in humid or microbial-rich environments, affecting the material's appearance and increasing cleaning and maintenance costs.
Polyoxime urethane was prepared by a mixed reaction system of oxime compounds, diisocyanate and polytetrahydrofuran diol, and modified by a highly hydrophilic two-dimensional sheet structure material to obtain an antifouling and anticorrosion coating, which was then applied to the substrate surface and cured.
It provides an antifouling and anticorrosive coating with excellent antibacterial properties and thermal stability, improving the corrosion resistance and mechanical properties of polyoxime ester. It has a simple, safe and environmentally friendly preparation process and is suitable for industrial production.
Smart Images
Figure CN120924147A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of antifouling and anticorrosion technology, specifically relating to an antifouling and anticorrosion coating, its preparation method, and its application. Background Technology
[0002] Polyurethane, with its abundant raw materials, low price, ease of processing and molding, and excellent overall performance, is one of the most widely used general-purpose plastics. As a polymer material with adjustable properties and wide applications, it plays a key role in many industrial fields due to its unique molecular structure design flexibility. However, the long-term operating temperature of ordinary polyurethane is generally below 80℃. In high-temperature environments, it is prone to thermal oxidative degradation, leading to decreased mechanical properties, yellowing, and even deformation. Furthermore, it lacks antibacterial properties, making it susceptible to bacterial and mold growth in humid or microbial-rich environments (such as medical equipment, food packaging, and water treatment equipment), causing material deterioration and potentially leading to hygiene and safety issues. Additionally, its surface easily adsorbs organic matter or microorganisms, forming biofilms that not only affect the material's appearance but may also accelerate aging and increase cleaning and maintenance costs. Therefore, developing a coating with intrinsically integrated antifouling and anticorrosion functions to meet the needs of marine development and new equipment is an urgent problem to be solved. Summary of the Invention
[0003] The main objective of this invention is to provide an antifouling and anticorrosion coating, its preparation method, and its application, so as to overcome the shortcomings of the prior art.
[0004] To achieve the aforementioned objectives, the technical solution adopted by this invention includes:
[0005] This invention provides a method for preparing an antifouling and anticorrosion coating, comprising:
[0006] A mixed reaction system containing at least an oxime compound, a diisocyanate, and polytetrahydrofuran diol is reacted to prepare polyoxime urethane;
[0007] Furthermore, polyoxime ester was modified with a two-dimensional sheet structure material with highly hydrophilic functional groups, and then the obtained viscous product was applied to the substrate surface by rotary evaporation and cured to obtain an antifouling and anticorrosion coating.
[0008] The present invention also provides an antifouling and anticorrosion coating prepared by the aforementioned preparation method.
[0009] This invention also provides a method for preparing an antibacterial agent, comprising:
[0010] A mixed reaction system containing at least an oxime compound, a diisocyanate, and polytetrahydrofuran diol is reacted to prepare polyoxime urethane.
[0011] Furthermore, an antibacterial agent was prepared by modifying polyoxime urethane with a two-dimensional sheet structure material having highly hydrophilic functional groups.
[0012] The present invention also provides an antibacterial agent prepared by the aforementioned preparation method.
[0013] This invention also provides the use of the aforementioned antifouling and anticorrosive coatings or antibacterial agents in the field of marine antifouling and anticorrosive treatment.
[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0015] (1) The antifouling and anticorrosive coating and antibacterial agent provided in this invention are environmentally friendly substances with excellent antibacterial properties and thermal stability. The polyoxime ester will not be decomposed by heat during the modification process, which can effectively ensure the antibacterial properties and mechanical properties of the formed antibacterial polyoxime ester. Carboxylated graphene oxide can increase the corrosion resistance and mechanical properties of polyoxime ester.
[0016] (2) The preparation process of the antifouling and anticorrosive coating and antibacterial agent in this invention has the advantages of being simple, having a high yield, being safe and environmentally friendly, and having a low cost, and is suitable for industrial production;
[0017] (3) The antifouling and anticorrosion coating and antibacterial agent provided in this invention have broad-spectrum antibacterial properties, high antibacterial efficiency, good anti-corrosion performance, good mechanical properties, are safe and reliable, odorless, and have low harm and pollution to the human body and the environment.
[0018] (4) The antifouling and anticorrosion coating prepared by the present invention has long-lasting antibacterial properties and intrinsic antifouling and anticorrosion properties. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 These are the nuclear magnetic resonance spectra of the coatings in Examples 1-3 and Comparative Examples 1-2 of this invention;
[0021] Figure 2 This is the nuclear magnetic resonance spectrum of the coating in Comparative Example 3 of this invention. Detailed Implementation
[0022] In view of the deficiencies of the prior art, the inventors of this case, through long-term research and extensive practice, have proposed the technical solution of this invention. The technical solution of this invention will be clearly and completely described below. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.
[0023] Specifically, as one aspect of the technical solution of this invention, a method for preparing an antifouling and anticorrosion coating includes:
[0024] A mixed reaction system containing at least an oxime compound, a diisocyanate, and polytetrahydrofuran diol is reacted to prepare polyoxime urethane;
[0025] Furthermore, polyoxime ester was modified using a two-dimensional sheet structure material with highly hydrophilic functional groups, and the resulting product was then applied to the substrate surface to obtain an antifouling and anticorrosion coating.
[0026] In some preferred embodiments, the preparation method specifically includes: mixing an oxime compound, a diisocyanate, polytetrahydrofuran diol, an organic solvent, and a catalyst in a protective atmosphere and reacting at 60-80°C for 1-3 hours to obtain polyoxime urethane.
[0027] Furthermore, the oxime compound includes, but is not limited to, any one or more combinations of 1,4-benzyldioxime, 2,3-dioximethiophene, and 2,5-furandicarboxaldehyde oxime.
[0028] Furthermore, the diisocyanate includes any one or more combinations of isophorone diisocyanate (IPDI), hexamethylene diisocyanate (HDI), toluene diisocyanate (TDI), and diphenylmethane diisocyanate (MDI), and is not limited thereto.
[0029] Furthermore, the catalyst comprises, but is not limited to, any one or a combination of dibutyltin dilaurate, stannous octoate, bismuth isooctanoate, and zinc isooctanoate.
[0030] Furthermore, the organic solvent includes any one or more combinations of N,N-dimethylacetamide, N,N-dimethylformamide, tetrahydrofuran, xylene, and dimethyl sulfoxide, and is not limited thereto.
[0031] Furthermore, the molar ratio of the oxime compound, diisocyanate and polytetrahydrofuran diol is (1-5):(2-6):1.
[0032] In some preferred embodiments, the preparation method specifically includes: mixing a two-dimensional sheet structure material with highly hydrophilic functional groups with polyoxime urethane in a protective atmosphere and reacting it at 60-80°C for 1-3 hours; then applying the obtained viscous product to the substrate surface by spraying after rotary evaporation for curing treatment to obtain an antifouling and anticorrosion coating.
[0033] Furthermore, the curing treatment is performed at a temperature of 25°C to 80°C for a time of 2 hours to 24 hours.
[0034] Furthermore, the two-dimensional sheet structure material with highly hydrophilic functional groups includes any one or more combinations of carboxylated MXene, aminolated MXene, aminolated modified graphene oxide, carboxylated hexagonal boron nitride, carboxylated modified graphene, carboxylated graphene oxide, and aminolated modified graphene, and is not limited thereto.
[0035] Furthermore, the mass ratio of the two-dimensional sheet structure material to polyoxime ester is 0.2 to 5:100.
[0036] In some preferred embodiments, the preparation method further includes: first, grinding and cleaning the substrate. For surface treatment, the substrate surface should be sanded (or sandblasted if possible) to increase roughness, and the surface oil should be wiped off with solvent.
[0037] In some preferred embodiments, the substrate includes, but is not limited to, any one of Q235 steel, PC, PET, 304 stainless steel, and epoxy iron oxide primer.
[0038] Another aspect of the present invention provides an antifouling and anticorrosion coating prepared by the aforementioned preparation method.
[0039] Another aspect of the present invention provides a method for preparing an antibacterial agent, comprising:
[0040] A mixed reaction system containing at least an oxime compound, a diisocyanate, and polytetrahydrofuran diol is reacted to prepare polyoxime urethane.
[0041] Furthermore, an antibacterial agent was prepared by modifying polyoxime urethane with a two-dimensional sheet structure material having highly hydrophilic functional groups.
[0042] In some preferred embodiments, the oxime compound includes, but is not limited to, any one or more combinations of 1,4-benzyldioxime, 2,3-dioximethiophene, and 2,5-furandicarboxaldehyde oxime.
[0043] In some preferred embodiments, the diisocyanate includes any one or more combinations of isophorone diisocyanate (IPDI), hexamethylene diisocyanate (HDI), toluene diisocyanate (TDI), and diphenylmethane diisocyanate (MDI), and is not limited thereto.
[0044] In some preferred embodiments, the two-dimensional sheet structure material with highly hydrophilic functional groups includes any one or more combinations of carboxylated MXene, aminolated MXene, aminolated modified graphene oxide, carboxylated hexagonal boron nitride, carboxylated modified graphene, carboxylated graphene oxide, and aminolated modified graphene, and is not limited thereto.
[0045] In some preferred embodiments, the preparation method specifically includes: mixing an oxime compound, a diisocyanate, polytetrahydrofuran diol, an organic solvent, and a catalyst in a protective atmosphere and reacting at 60-80°C for 1-3 hours to obtain polyoxime urethane.
[0046] Furthermore, the molar ratio of the oxime compound, diisocyanate and polytetrahydrofuran diol is (1-5):(2-6):1.
[0047] Furthermore, the catalyst comprises, but is not limited to, any one or a combination of dibutyltin dilaurate, stannous octoate, bismuth isooctanoate, and zinc isooctanoate.
[0048] Furthermore, the organic solvent includes any one or more combinations of N,N-dimethylacetamide, N,N-dimethylformamide, tetrahydrofuran, xylene, and dimethyl sulfoxide, and is not limited thereto.
[0049] Furthermore, when the raw material is IPDI (isophorone diisocyanate), DFFD (2,5-furandicarboxaldehyde oxime), or PTMG (polytetrahydrofurandiol), the polyoxime urethane has the structure shown in formula (I):
[0050]
[0051] Where m is an integer of 1000, and n is an integer between 15003 and 35005.
[0052] In some preferred embodiments, the preparation method specifically includes: mixing a two-dimensional sheet structure material with highly hydrophilic functional groups with polyoxime urethane in a protective atmosphere and reacting at 60-80°C for 1-3 hours, followed by separation treatment to obtain an antibacterial agent; wherein the mass ratio of the two-dimensional sheet structure material to polyoxime urethane is 0.2-5:100.
[0053] In some more specific embodiments, the method for preparing the antibacterial agent includes: removing water from polytetrahydrofuran diol in an oil bath at 100°C for 1 hour; reacting isoflurane diisocyanate, 2,5-furandicarboxaldehyde oxime, and polytetrahydrofuran diol in an oil bath at 60-80°C under nitrogen atmosphere for 1-3 hours (0.1 wt% dibutyltin dilaurate is added simultaneously with isoflurane diisocyanate); then adding GO-COOH and reacting at 60-80°C under nitrogen atmosphere for 1-3 hours to obtain the antibacterial agent.
[0054] In some more specific embodiments, the method for preparing the antibacterial agent includes: removing water from polytetrahydrofuran diol in an oil bath at 100°C for 1 hour; reacting isoflurane diisocyanate, 2,5-furandicarboxaldehyde oxime, and polytetrahydrofuran diol in an oil bath at 70°C under nitrogen atmosphere for 1 hour; then adding GO-COOH and reacting at 70°C under nitrogen atmosphere for 1 hour; and finally rotary evaporating the liquid and vacuum drying it to obtain the antibacterial agent.
[0055] Another aspect of the present invention provides an antibacterial agent prepared by the aforementioned preparation method.
[0056] Another aspect of the present invention provides the use of the aforementioned antifouling and anticorrosive coatings or antibacterial agents in the field of marine antifouling and anticorrosive treatment.
[0057] The technical solution of the present invention will be further described in detail below with reference to several preferred embodiments. These embodiments are implemented on the premise of the technical solution of the invention, and provide detailed implementation methods and specific operation processes. However, the protection scope of the present invention is not limited to the following embodiments.
[0058] Unless otherwise specified, the experimental materials used in the examples below can be purchased from conventional biochemical reagent companies.
[0059] Example 1
[0060] Polytetrahydrofuran diol was dehydrated by bathing it in an oil bath at 100°C for 1 hour. Isophoroisocyanate, 2,5-furandicarboxaldehyde oxime, and polytetrahydrofuran diol in a molar ratio of 4:3:1 were reacted in an oil bath at 70°C under nitrogen for 1 hour (0.1 wt% dibutyltin dilaurate was added simultaneously with isophoroisocyanate). Then, 1 wt% GO-COOH was added and reacted at 70°C under nitrogen for 1 hour. A viscous product was obtained by rotary evaporation. Then, N,N-dimethylacetamide was added to dilute the product and sprayed onto the surface of Q235 steel. The coating was then cured at 50°C for 12 hours to obtain an anti-fouling and anti-corrosion coating (denoted as: PUDF-GC1).
[0061] The NMR characterization information of the antifouling and anticorrosion coating is as follows: 1H-NMR (400MHz CDCl3, ppm): 7.23(-NH - ,H),7.25(-NH - ,H)0.1(CH2-, 3H), 3.2(-CH2, 2H), 1.8(-CH2, 2H), 7.19(CH-, furan ring, 1H)
[0062] Example 2
[0063] Polytetrahydrofuran diol was dehydrated by bathing in an oil bath at 100°C for 1 hour. Isophoroisocyanate, 2,5-furandicarboxaldehyde oxime, and polytetrahydrofuran diol in a molar ratio of 4:3:1 were reacted in an oil bath at 70°C under nitrogen for 1 hour (0.1 wt% dibutyltin dilaurate was added simultaneously with isophoroisocyanate). Then, 0.25 wt% GO-COOH was added and reacted at 70°C under nitrogen for 1 hour. A viscous product was obtained by rotary evaporation. This product was then diluted with N,N-dimethylacetamide and sprayed onto the surface of Q235 steel. The coating was then cured at 50°C for 12 hours to obtain an anti-fouling and anti-corrosion coating (denoted as: PUDF-GC). 0.25 ).
[0064] Example 3
[0065] Polytetrahydrofuran diol was dehydrated by bathing in an oil bath at 100°C for 1 hour. Isophoroisocyanate, 2,5-furandicarboxaldehyde oxime, and polytetrahydrofuran diol in a molar ratio of 4:3:1 were reacted in an oil bath at 70°C under nitrogen for 1 hour (0.1 wt% dibutyltin dilaurate was added simultaneously with isophoroisocyanate). Then, 0.5 wt% GO-COOH was added and reacted at 70°C under nitrogen for 1 hour. A viscous product was obtained by rotary evaporation. This product was then diluted with N,N-dimethylacetamide and sprayed onto the surface of Q235 steel. The coating was then cured at 50°C for 12 hours to obtain an anti-fouling and anti-corrosion coating (denoted as: PUDF-GC). 0.5 ).
[0066] Comparative Example 1
[0067] The method is the same as in Example 1, except that GO is used instead of GO-COOH.
[0068] Polytetrahydrofuran diol was dehydrated by bathing it in an oil bath at 100°C for 1 hour. Isophoroisocyanate, 2,5-furandicarboxaldehyde oxime, and polytetrahydrofuran diol in a molar ratio of 4:3:1 were reacted in an oil bath at 70°C under nitrogen for 1 hour (0.1 wt% dibutyltin dilaurate was added simultaneously with isophoroisocyanate). Then, 1 wt% GO was added and reacted at 70°C under nitrogen for 1 hour. A viscous product was obtained by rotary evaporation. Then, N,N-dimethylacetamide was added to dilute the product and sprayed onto the surface of Q235 steel. The coating was then cured at 50°C for 12 hours to obtain an anti-fouling and anti-corrosion coating (denoted as: PUDF-GO1).
[0069] Comparative Example 2
[0070] The method is the same as in Example 1, except that GO-COOH is missing.
[0071] Polytetrahydrofuran diol was dehydrated by bathing it in an oil bath at 100°C for 1 hour. Isophoroisocyanate, 2,5-furandicarboxaldehyde oxime, and polytetrahydrofuran diol in a molar ratio of 4:3:1 were reacted in an oil bath at 70°C under nitrogen for 1 hour (0.1 wt% dibutyltin dilaurate was added simultaneously with isophoroisocyanate). The reaction was continued at 70°C under nitrogen for 1 hour. A viscous product was obtained by rotary evaporation. Then, N,N-dimethylacetamide was added to dilute the product, and it was sprayed onto the surface of Q235 steel. The coating was then cured at 50°C for 12 hours to obtain an anti-fouling and anti-corrosion coating (denoted as: PUDF).
[0072] Comparative Example 3
[0073] The method is the same as in Example 1, except that 2,5-furandicarboxaldehyde oxime is missing.
[0074] Polytetrahydrofuran diol was dehydrated by bathing it in an oil bath at 100°C for 1 hour. Isophorate and polytetrahydrofuran diol with a molar ratio of 4:1 were then reacted in an oil bath at 70°C under nitrogen for 1 hour (with the addition of 0.1 wt% dibutyltin dilaurate). 1 wt% GO-COOH was added and the mixture was reacted at 70°C under nitrogen for 1 hour. A viscous product was obtained by rotary evaporation. Then, N,N-dimethylacetamide was added to dilute the product, and it was sprayed onto the surface of Q235 steel. The coating was then cured at 50°C for 12 hours to obtain an anti-fouling and anti-corrosion coating (denoted as: PU-GC1).
[0075] Figure 1 These are the nuclear magnetic resonance spectra of the coatings in Examples 1-3 and Comparative Examples 1-2; Figure 2 This is the nuclear magnetic resonance spectrum of the coating in Comparative Example 3.
[0076] The coatings in Examples 1-3 and Comparative Examples 1-3 were characterized, and the data are shown in Table 1.
[0077] Table 1
[0078]
[0079]
[0080] Example 4
[0081] Polytetrahydrofuran glycol was dehydrated in an oil bath at 100°C for 1 hour. Hexamethylene diisocyanate, 1,4-benzyl dioxime, and polytetrahydrofuran glycol in a molar ratio of 1:2:1 were then reacted in an oil bath at 60°C under nitrogen for 3 hours (with 0.1 wt% dibutyltin dilaurate added simultaneously). Then, 0.2 wt% carboxylated MXene was added and reacted at 60°C under nitrogen for 3 hours. A viscous product was obtained by rotary evaporation. N,N-dimethylacetamide was then added to dilute the product, which was then sprayed onto the PC surface and cured at 25°C for 24 hours to obtain an anti-fouling and anti-corrosion coating.
[0082] Example 5
[0083] Polytetrahydrofuran glycol was dehydrated by bathing it in an oil bath at 100°C for 1 hour. Toluene diisocyanate, 2,3-dioxime thiophene, and polytetrahydrofuran glycol in a molar ratio of 5:6:1 were then reacted in an oil bath at 80°C under nitrogen for 2 hours (with 0.1 wt% dibutyltin dilaurate added simultaneously). Then, 1 wt% carboxylated hexagonal boron nitride was added, and the mixture was reacted at 80°C under nitrogen for 2 hours. A viscous product was obtained by rotary evaporation. The product was then diluted with N,N-dimethylacetamide and sprayed onto a PET surface. Finally, it was cured at 80°C for 2 hours to obtain an antifouling and anticorrosion coating.
[0084] Example 6
[0085] Polytetrahydrofuran glycol was dehydrated by bathing in an oil bath at 100°C for 1 hour. Diphenylmethane diisocyanate, 2,5-furandicarboxaldehyde oxime, and polytetrahydrofuran glycol in a molar ratio of 4:3:1 were reacted in an oil bath at 70°C under nitrogen for 1 hour (with 0.1 wt% dibutyltin dilaurate added simultaneously). Then, 1 wt% aminated modified graphene was added and reacted at 70°C under nitrogen for 1 hour. A viscous product was obtained by rotary evaporation. Then, N,N-dimethylacetamide was added to dilute the product and sprayed onto the surface of 304 stainless steel. The coating was then cured at 30°C for 20 hours to obtain an anti-fouling and anti-corrosion coating.
[0086] In addition, the inventors of this case also conducted experiments with other raw materials, process operations, and process conditions described in this specification, referring to the aforementioned embodiments, and obtained relatively ideal results in all cases.
[0087] It should be understood that the technical solutions of the present invention are not limited to the specific embodiments described above. Any technical modifications made to the technical solutions of the present invention without departing from the spirit and scope of the claims are within the scope of protection of the present invention.
Claims
1. A method for preparing an antifouling and anticorrosion coating, characterized in that, include: A mixed reaction system containing at least an oxime compound, a diisocyanate, and polytetrahydrofuran diol is reacted to prepare polyoxime urethane; Furthermore, polyoxime ester was modified with a two-dimensional sheet structure material with highly hydrophilic functional groups, and then the obtained viscous product was applied to the substrate surface by rotary evaporation and cured to obtain an antifouling and anticorrosion coating.
2. The preparation method according to claim 1, characterized in that, Specifically, it includes: In a protective atmosphere, an oxime compound, diisocyanate, polytetrahydrofuran diol, organic solvent, and catalyst are mixed and reacted at 60-80°C for 1-3 hours to obtain polyoxime urethane. Preferably, the oxime compound includes any one or more combinations of 1,4-benzyldioxime, 2,3-dioximethiophene, and 2,5-furandicarboxaldehyde oxime; Preferably, the diisocyanate includes any one or a combination of isophorone diisocyanate, hexamethylene diisocyanate, toluene diisocyanate, and diphenylmethane diisocyanate; Preferably, the catalyst comprises any one or a combination of dibutyltin dilaurate, stannous octoate, bismuth isooctanoate, and zinc isooctanoate; Preferably, the organic solvent includes any one or more combinations of N,N-dimethylacetamide, N,N-dimethylformamide, tetrahydrofuran, xylene, and dimethyl sulfoxide; Preferably, the molar ratio of the oxime compound, diisocyanate and polytetrahydrofuran diol is (1-5):(2-6):1; And / or, the preparation method specifically includes: mixing a two-dimensional sheet structure material with highly hydrophilic functional groups with polyoxime urethane in a protective atmosphere and reacting it at 60-80°C for 1-3 hours; then applying the obtained viscous product to the substrate surface by spraying after rotary evaporation for curing treatment to obtain an antifouling and anticorrosive coating; preferably, the curing temperature is 25°C-80°C and the time is 2 hours-24 hours; Preferably, the two-dimensional sheet structure material with highly hydrophilic functional groups includes any one or more combinations of carboxylated MXene, aminated MXene, aminated modified graphene oxide, carboxylated hexagonal boron nitride, carboxylated modified graphene, carboxylated graphene oxide, and aminated modified graphene. Preferably, the mass ratio of the two-dimensional sheet structure material to polyoxime ester is 0.2 to 5:100; And / or, the substrate includes any one of Q235 steel, PC, PET, 304 stainless steel, and epoxy iron oxide primer; And / or, the preparation method further includes: first grinding and cleaning the substrate.
3. The antifouling and anticorrosion coating prepared by the preparation method according to claim 1 or 2.
4. A method for preparing an antibacterial agent, characterized in that, include: A mixed reaction system containing at least an oxime compound, a diisocyanate, and polytetrahydrofuran diol is reacted to prepare polyoxime urethane. Furthermore, an antibacterial agent was prepared by modifying polyoxime urethane with a two-dimensional layered structure material having highly hydrophilic functional groups.
5. The preparation method according to claim 4, characterized in that: The oxime compound includes any one or more combinations of 1,4-benzodioxime, 2,3-dioximethiophene, and 2,5-furandicarboxaldehyde oxime; And / or, the diisocyanate includes any one or more combinations of isophorone diisocyanate, hexamethylene diisocyanate, toluene diisocyanate, and diphenylmethane diisocyanate; And / or, the two-dimensional sheet structure material with highly hydrophilic functional groups includes any one or more combinations of carboxylated MXene, aminated MXene, aminated modified graphene oxide, carboxylated hexagonal boron nitride, carboxylated modified graphene, carboxylated graphene oxide, and aminated modified graphene.
6. The preparation method according to claim 4, characterized in that, Specifically, it includes: Polyoxime ester is prepared by mixing an oxime compound, diisocyanate, polytetrahydrofuran diol, organic solvent, and catalyst in a protective atmosphere and reacting at 60-80°C for 1-3 hours.
7. The preparation method according to claim 6, characterized in that: The molar ratio of the oxime compound, diisocyanate and polytetrahydrofuran diol is (1-5):(2-6):1; And / or, the catalyst comprises any one or more combinations of dibutyltin dilaurate, stannous octoate, bismuth isooctanoate, and zinc isooctanoate; And / or, the organic solvent includes any one or more combinations of N,N-dimethylacetamide, N,N-dimethylformamide, tetrahydrofuran, xylene, and dimethyl sulfoxide; And / or, the polyoxime ester has a structure as shown in formula (I): Where m is an integer of 1000, and n is an integer between 15003 and 35005.
8. The preparation method according to claim 4, characterized in that, Specifically, it includes: In a protective atmosphere, a two-dimensional sheet structure material with highly hydrophilic functional groups is mixed with polyoxime urethane and reacted at 60-80°C for 1-3 hours, followed by separation treatment to obtain an antibacterial agent; wherein the mass ratio of the two-dimensional sheet structure material to polyoxime urethane is 0.2-5:
100.
9. An antibacterial agent prepared by any one of claims 4-8.
10. The use of the antifouling and anticorrosion coating of claim 3 or the antibacterial agent of claim 9 in the field of marine antifouling and anticorrosion.