Anticorrosive oil and anticorrosive material, and preparation methods therefor and use thereof

Abstract

The present invention relates to the field of corrosion prevention materials. Disclosed are anticorrosive oil and an anticorrosive material, and preparation methods therefor and the use thereof. The anticorrosive oil contains a monoalkoxy titanate, a dihydroxypropyl octadecanoate, an organosilicon defoaming agent, an antioxidant, modified nano silicon dioxide, nano titanium dioxide, graphene and aluminum tripolyphosphate, wherein the hydroxyl content of the modified nano silicon dioxide is 0.1-0.5 / nm2, and the particle size of the modified nano silicon dioxide satisfies: calculated on the basis that the particle size interval width is 5 nm, the range of particle size having the maximum proportion is 10-15 nm, and the proportion thereof is 45-55 wt%. There are no gaps between the layers of an anticorrosive material formed by means of the anticorrosive oil of the present invention, and the anticorrosive material has good sealing and good corrosion resistance, impact resistance and ultraviolet aging resistance, and can provide long-acting corrosion prevention for ocean steel piles.

Description

Anticorrosion oil and anticorrosion material and preparation method and application thereof

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of Chinese patent application 202311481218.9 filed on November 8, 2023, the contents of which are incorporated herein by reference. Technical Field

[0003] The present invention relates to the field of corrosion protection materials, and in particular to an anti-corrosion oil and an anti-corrosion material, and a preparation method and application thereof. Background Art

[0004] The marine environment severely corrodes steel. Over time, the surface protective coatings of offshore platforms, high-pile docks, and offshore steel structures deteriorate, leading to corrosion of the steel piles and structures. Corrosion thinning reduces the bearing capacity of these structures, posing a threat to production safety. Existing anti-corrosion coatings and other protective repair technologies require high surface treatment requirements for offshore repair and maintenance, are complex, and require relatively long operations. These factors result in poor overall corrosion repair effectiveness and a short protection period.

[0005] At present, the main methods for protecting marine steel structures are: FRP coating and heavy anti-corrosion coating protection. FRP coating has the advantages of light weight, high specific strength, excellent heat resistance, corrosion resistance, good impact resistance, and superior process performance. However, due to the strong rigidity of FRP, seawater will penetrate into the inner side of the sheath when using FRP sheath alone, making it difficult to achieve a satisfactory protection effect. Heavy anti-corrosion coating protection is a commonly used practice at home and abroad. Judging from years of use, heavy anti-corrosion coating protection has also exposed certain problems. First, heavy anti-corrosion coating has poor impact resistance and needs maintenance in a short period of time (about 1-2 years) after new construction or repair; second, there is the problem of on-site repair. Although there are now heavy anti-corrosion coatings that can be constructed underwater, judging from the results of on-site applications, on-site repairs are difficult to guarantee construction quality and cannot achieve the expected results.

[0006] In recent years, multi-layer petrolatum coating technology has been recognized as an effective anti-corrosion method for metal pipes and piles. The multi-layer petrolatum coating technology includes an inner anti-corrosion layer and an outer protective layer. When using multi-layer petrolatum coating technology, a primer is applied to the metal surface of the pile body, and then an intermediate layer with anti-corrosion or buffering functions is wrapped layer by layer. Finally, an outer layer of polyethylene, fiberglass, glass fiber, etc. is tightly wrapped on the outermost layer using a hydraulic tensioning device. This construction method is complex and time-consuming. If the coating is not tight, there will still be gaps between the layers, which may lead to seawater infiltration and corrosion, affecting the service life. Alternatively, a multi-layer anti-corrosion casing is prepared by mold pressing and integral molding, such as the preparation method disclosed in CN106739189A. However, although the casing structure prepared by this method is convenient to use, its processing method can only use a fixed-size mold to prepare a single-size casing, which cannot match steel piles of various diameters and sizes. If it matches multiple types of steel piles, molds of corresponding diameters must be prepared, which is costly.

[0007] Based on the existing problems of marine environment steel protective materials in the existing technology, such as poor UV aging resistance, impact resistance and corrosion resistance, there is an urgent need to research an anti-corrosion material with excellent performance.

[0008] Summary of the Invention

[0009] The purpose of the present invention is to overcome the problems of poor UV aging resistance, impact resistance and corrosion resistance of protective materials for marine environment steel in the prior art, and to provide an anti-corrosion oil and anti-corrosion material and their preparation method and application.

[0010] In order to achieve the above-mentioned object, the first aspect of the present invention provides an anti-corrosion oil, wherein the anti-corrosion oil contains monoalkoxy titanate, dihydroxypropyl octadecanoate, silicone defoamer, antioxidant, modified nano-silica, nano-titanium dioxide, graphene and aluminum tripolyphosphate; wherein the hydroxyl content of the modified nano-silica is 0.1-0.5 / nm 2 The particle size of the modified nano-silica satisfies: based on a particle size interval width of 5 nm, the maximum particle size range is 10-15 nm and accounts for 45-55% by weight.

[0011] The second aspect of the present invention provides an anti-corrosion material, wherein the anti-corrosion material includes an anti-corrosion base oil layer, an intermediate fiber layer and an outer protective layer, wherein the anti-corrosion oil forming the anti-corrosion base oil layer is the anti-corrosion oil described in the first aspect.

[0012] The third aspect of the present invention provides a method for preparing an anti-corrosion material, wherein the preparation method comprises: laying an outer protective layer and an intermediate fiber layer and pressing them, and after pressing is completed, coating the anti-corrosion oil described in the first aspect of the present invention on the intermediate fiber layer to form the anti-corrosion base oil layer.

[0013] The fourth aspect of the present invention provides an anti-corrosion material obtained by the preparation method.

[0014] A fifth aspect of the present invention provides an application of the anti-corrosion material in corrosion protection of marine steel materials.

[0015] Through the above technical solution, the present invention provides an anti-corrosion oil and an anti-corrosion material and a preparation method and application thereof, which have at least the following beneficial effects:

[0016] (1) The anti-corrosion oil of the present invention has good adhesion, hydrophobicity and sealing properties due to the synergistic effect of the components, and has excellent anti-corrosion performance in seawater;

[0017] (2) The anti-corrosion material provided in the present invention has good sealing performance without gaps between the layers, and has good anti-corrosion performance, impact resistance and UV aging resistance, and can provide long-term corrosion protection for marine steel piles;

[0018] (3) The method for preparing the anti-corrosion material provided by the present invention is simple to operate, does not require special equipment, and does not require the addition of adhesive additives during the pressing process. Under a specific pressure, each layer is fully bonded and has a specific thickness, so that the material can meet the sealing requirements and the rigidity, flexibility, stretchability and impact buffering performance requirements required for being installed on the outside of a steel pile;

[0019] (4) The preparation and construction of the anti-corrosion material of the present invention is convenient and can be done manually. Compared with the original three-layer coating protection structure, it saves at least about 60% of the on-site construction time;

[0020] (5) The anti-corrosion material of the present invention has strong adaptability and can be cut, installed and used according to the sizes of steel piles of different specifications, with low processing costs and reduced material waste. DETAILED DESCRIPTION

[0021] The endpoints of the ranges and any values ​​disclosed herein are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoints of each range, the endpoints of each range and individual point values, and the individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be considered to be specifically disclosed herein.

[0022] The first aspect of the present invention provides an anti-corrosion oil, wherein the anti-corrosion oil contains monoalkoxy titanate, dihydroxypropyl octadecanoate, an organic silicon defoamer, an antioxidant, modified nano-silica, nano-titanium dioxide, graphene and aluminum tripolyphosphate; wherein the hydroxyl content of the modified nano-silica is 0.1-0.5 / nm 2The particle size of the modified nano-silica satisfies: based on a particle size interval width of 5 nm, the maximum particle size range is 10-15 nm and accounts for 45-55% by weight.

[0023] In the present invention, the anti-corrosion oil does not contain a solvent, and the monoalkoxy titanate, dihydroxypropyl octadecanoate, silicone defoamer, antioxidant, modified nano-silica, nano-titanium dioxide, graphene and aluminum tripolyphosphate cooperate with each other and work synergistically, so that the anti-corrosion oil has good adhesion, hydrophobicity and sealing properties, and has excellent anti-corrosion performance in seawater.

[0024] In some specific embodiments of the present invention, the alkoxy group in the monoalkoxy titanate is C5-C 10 The alkoxy group is preferably 2,6-dimethyl-4-heptyloxy.

[0025] Among them, in the present invention, the use of monoalkoxy titanate as the base resin can significantly improve the anti-corrosion performance of the anti-corrosion oil and provide long-term corrosion protection for marine steel piles.

[0026] In some specific embodiments of the present invention, 2,6-dimethyl-4-heptanol is used to modify titanium metal to obtain the monoalkoxy titanate.

[0027] In some specific embodiments of the present invention, the monoalkoxy titanate is prepared by: TiCl4 and 2,6-dimethyl-4-heptanol are subjected to a modification reaction under ZnO catalysis to obtain the monoalkoxy titanate. The reaction equation is:

[0028] Among them, the structure of ROH is

[0029] In some specific embodiments of the present invention, during the preparation of the monoalkoxy titanate, the mass ratio of the 2,6-dimethyl-4-heptanol to the ZnO is 1:0.01-0.05, the molar ratio of the 2,6-dimethyl-4-heptanol to TiCl4 is 3-5:1, the pH of the modification reaction system is 9-10, the temperature of the modification reaction is 150-180°C, and the modification reaction time is 1-2 hours. In the present invention, the yield of the monoalkoxy titanate can be significantly increased by controlling the pH of the modification reaction system and the temperature of the modification reaction.

[0030] In some specific embodiments of the present invention, the modified nano-silica is arylsilazane-modified nano-silica.

[0031] In some specific embodiments of the present invention, the preparation method of the modified nano-silica is: under nitrogen conditions, fumed silica and 1,3-diphenyltetramethyldisilazane undergo a hydroxyl replacement reaction to obtain the modified nano-silica. Wherein, the hydroxyl replacement reaction equation is:

[0032] Among them, in the present invention, 1,3-diphenyltetramethyldisilazane is used to modify the fumed silica, which can improve the dispersibility and compatibility of the nanoparticles in the anti-corrosion oil and avoid agglomeration.

[0033] In some specific embodiments of the present invention, in the preparation of the modified nano-silica, the temperature of the hydroxyl replacement reaction is 120°C-180°C, the time of the hydroxyl replacement reaction is 30-50 minutes, and the molar ratio of the fumed silica to 1,3-diphenyltetramethyldisilazane is 1-3:1.

[0034] In the present invention, the hydroxyl content in the modified nano-silica can be adjusted by controlling the reaction temperature, reaction time and molar ratio of fumed silica to 1,3-diphenyltetramethyldisilazane of the hydroxyl replacement reaction, especially controlling the reaction temperature.

[0035] In some specific embodiments of the present invention, the hydroxyl content of the modified nano-silica is preferably 0.3-0.4 / nm 2 The particle size of the modified nano-silica satisfies: based on a particle size interval width of 5 nm, the maximum particle size range is 10-15 nm and the proportion is preferably 46-53.5% by weight.

[0036] Among them, in the present invention, the particle size of the modified nano-silica is measured with a particle size interval width of 5nm, and the particle size is divided into less than or equal to 5nm, greater than 5nm and less than or equal to 10nm, greater than 10nm and less than or equal to 15nm, greater than 15nm and less than or equal to 20nm, greater than 20nm and less than or equal to 25nm, and so on. The inventors of the present invention have found through research that when the content of hydroxyl groups in the modified nano-silica is 0.3-0.4 / nm 2 When the particle size range with the largest proportion is 10-15nm and accounts for 46-53.5% by weight, the dispersion of the various components in the anti-corrosion oil is more uniform and the compatibility is better. Therefore, the anti-corrosion oil has a finer texture, better adhesion, and better sealing, which can prevent moisture penetration and provide longer-lasting corrosion protection for marine steel piles.

[0037] In some specific embodiments of the present invention, the organosilicon defoamer is selected from polydimethylsiloxane and / or polyethylene glycol siloxane, preferably polydimethylsiloxane. In the present invention, the weight average molecular weight of the organosilicon defoamer is preferably 2000-3000 g / mol.

[0038] In some specific embodiments of the present invention, the antioxidant is selected from one or more of thiodiphenylamine, diphenylamine, and diisooctyldiphenylamine, preferably thiodiphenylamine. In the present invention, the aniline antioxidant and the silicone defoamer act together to further improve the stability of the anti-corrosion oil, thereby providing longer-lasting corrosion protection for marine steel piles.

[0039] In some specific embodiments of the present invention, relative to 1 part by weight of the monoalkoxy titanate, the content of the dihydroxypropyl octadecanoate is 0.1-0.3 parts by weight, the content of the silicone defoamer is 0.01-0.03 parts by weight, the content of the antioxidant is 0.01-0.04 parts by weight, the content of the modified nano-silica is 0.01-0.04 parts by weight, the content of the nano-titanium dioxide is 0.1-0.5 parts by weight, the content of the graphene is 0.1-0.5 parts by weight, and the content of the aluminum tripolyphosphate is 0.1-0.5 parts by weight. The anti-corrosion oil formed by the components in the above ranges has good adhesion, hydrophobicity and sealing properties, can prevent seawater penetration, and has excellent anti-corrosion performance in seawater.

[0040] In some specific embodiments of the present invention, the method for preparing the anti-corrosion oil includes: mixing the monoalkoxy titanate, dihydroxypropyl octadecanoate, silicone defoamer, antioxidant, modified nano-silica, nano-titanium dioxide, graphene and aluminum tripolyphosphate to obtain the anti-corrosion oil.

[0041] Among them, in the present invention, in order to further improve the adhesion and durability of the anti-corrosion oil, it is preferred to grind the components after mixing them evenly so that the components are dispersed more evenly, so that the anti-corrosion oil can better adhere to the surface of the steel pile, which helps to further improve the adhesion and durability (i.e. stability) of the anti-corrosion oil.

[0042] The second aspect of the present invention provides an anti-corrosion material, wherein the anti-corrosion material includes an anti-corrosion base oil layer, an intermediate fiber layer and an outer protective layer; wherein the anti-corrosion oil forming the anti-corrosion base oil layer is the anti-corrosion oil described in the first aspect.

[0043] Among them, in the present invention, the anti-corrosion oil described in the first aspect has good adhesion, hydrophobicity and sealing properties, which can prevent seawater from penetrating, thereby making the anti-corrosion material have excellent anti-corrosion performance and anti-corrosion performance.

[0044] In some specific embodiments of the present invention, the material of the intermediate fiber layer is selected from one or more of polyester fiber, polyurethane fiber and polyamide fiber.

[0045] Among them, in the present invention, polyester fiber, polyurethane fiber and polyamide fiber have the advantages of good aging resistance and tensile strength. Using at least one of polyester fiber, polyurethane fiber and polyamide fiber to prepare the intermediate fiber layer can enhance the tensile strength of the anti-corrosion material.

[0046] In some specific embodiments of the present invention, the raw materials for preparing the outer protective layer include, relative to 100 parts by weight of polyethylene, 0.1-0.3 parts by weight of ethylene-vinyl acetate copolymer, 0.2-0.8 parts by weight of benzotriazole, 0.3-0.6 parts by weight of thiocarbamate, 5-10 parts by weight of graphene, 6-10 parts by weight of silicon powder, and 2-5 parts by weight of neodymium oxide.

[0047] Among them, in the present invention, after the components of the outer protective layer are evenly mixed, they can be made into a sheet by hot-melt extrusion. In the outer protective layer of the present invention, the sheet prepared by fusing the above raw materials has good mechanical properties, which can further significantly improve the impact resistance of the anti-corrosion material, improve the anti-corrosion material's ability to withstand seawater scouring and wave impact, and provide effective protection for the submarine structure, preventing the submarine structure from deformation or fracture under the action of external forces. On the other hand, it also has excellent resistance to ultraviolet aging, can cope with the strong ultraviolet radiation in the marine environment, can avoid the anti-corrosion effect of the anti-corrosion material due to powdering, cracking and other phenomena, and extend the service life of the anti-corrosion material.

[0048] In some specific embodiments of the present invention, the polyethylene has a weight-average molecular weight of 2000-3000 g / mol; preferably, the ethylene-vinyl acetate copolymer has a weight-average molecular weight of 1000-3000 g / mol. Preferably, the weight ratio of the structural units provided by ethylene to the structural units provided by vinyl acetate in the ethylene-vinyl acetate copolymer is 70-75:25-30.

[0049] In some specific embodiments of the present invention, the thickness of the anti-corrosion material is 4-15 mm, preferably 6-12 mm.

[0050] The anti-corrosion material formed by the anti-corrosion oil of the present invention has no gaps between the layers, good sealing performance, good anti-corrosion performance, impact resistance and UV aging resistance, and can provide long-term corrosion protection for marine steel piles.

[0051] The third aspect of the present invention provides a method for preparing the anti-corrosion material described in the second aspect of the present invention, wherein the preparation method comprises: laying the outer protective layer and the intermediate fiber layer in sequence and pressing them, and after pressing is completed, coating the anti-corrosion oil described in the first aspect on the intermediate fiber layer to form the anti-corrosion base oil layer.

[0052] In some specific embodiments of the present invention, the outer protective layer has a thickness of 2-5 mm, an elongation at break of 740-755%, a tensile strength of 20-50 MPa, can pass an 8J / mm impact strength test, and a 3000h UV aging resistance tensile performance retention rate of 84-87%.

[0053] In some specific embodiments of the present invention, the thickness of the intermediate fiber layer is 2-3 mm, the tensile strength is 9 MPa-15 MPa, and the elongation at break is 10-11%.

[0054] In some specific embodiments of the present invention, the pressing method is hydraulic pressing.

[0055] In some embodiments of the present invention, the hydraulic pressing process is performed at a temperature of 50-90°C and a pressure of 10-20 MPa. The hydraulic pressing process comprises sequentially placing the outer protective layer and the intermediate fiber layer on the surface of the hydraulic press, and then applying pressure to press the two layers into a single layer. The present invention does not require the addition of an adhesive additive during the pressing process.

[0056] In some specific embodiments of the present invention, the thickness of the anti-corrosion base oil layer is 2-3 mm, and the hydrophobicity is 96%-98.8%.

[0057] Among them, in the present invention, the anti-corrosion oil described in the first aspect of the present invention has a fine texture and good adhesion performance, and does not require an external solvent. It can be directly coated on the middle fiber layer after pressing to obtain an anti-corrosion material.

[0058] In some specific embodiments of the present invention, the method for preparing the anti-corrosion material comprises:

[0059] (1) mixing monoalkoxy titanate, dihydroxypropyl octadecanoate, an organosilicon defoamer, an antioxidant, modified nano-silica, nano-titanium dioxide, graphene, and aluminum tripolyphosphate, and optionally grinding the mixture to obtain an anti-corrosion oil;

[0060] (2) mixing polyethylene, ethylene-vinyl acetate copolymer, benzotriazole, thiocarbamate, graphene, silicon micropowder and neodymium oxide, and then hot-melt extruding to obtain an outer protective layer;

[0061] (3) The outer protective layer and the middle fiber layer are laid and pressed, and after the pressing is completed, the anti-corrosion oil is coated on the middle fiber layer to form the anti-corrosion base oil layer, thereby obtaining the anti-corrosion material.

[0062] The fourth aspect of the present invention provides an anti-corrosion material prepared using the preparation method described in the third aspect of the present invention.

[0063] The fifth aspect of the present invention provides an application of the anti-corrosion material described in the fourth aspect of the present invention in corrosion protection of marine steel materials.

[0064] In some specific embodiments of the present invention, the steel pile is cut to size according to its diameter during use. The cut side length of the coating anti-corrosion material is smaller than the circumference of the steel pile during cutting. Flanges are welded on the outer protective surface of the single-layer coating anti-corrosion material on both sides obtained after cutting.

[0065] In some specific embodiments of the present invention, during installation, at the anti-corrosion site, the surface of the steel pile is first cleaned. After the cleaning meets the standard requirements, the cut anti-corrosion coating material is directly wrapped on the surface of the steel pile. Since the cut side length of the anti-corrosion coating material is smaller than the circumference of the steel pile, there is still a certain circumferential distance between the two flanges after wrapping. Use hydraulic tools, such as a hydraulic wrench, to fit the flanges together, and then tighten them with 316L stainless steel bolts.

[0066] The present invention will be described in detail below through examples.

[0067] In the following examples and comparative examples, where specific conditions are not specified, the experiments were conducted under conventional conditions or those recommended by the manufacturer. Reagents and instruments used, where the manufacturer is not specified, are commercially available. Unless otherwise specified, the amounts of components used in the examples are in parts by weight.

[0068] Preparation example of modified nano-silica

[0069] Preparation Example 1 of Modified Nano-Silica: Fumed silica was added to a modification apparatus and heated under nitrogen at 140°C for 40 minutes. 1,3-diphenyltetramethyldisilazane was then added at a molar ratio of 2:1. Under nitrogen protection, the fumed silica and 1,3-diphenyltetramethyldisilazane underwent a hydroxyl substitution reaction to produce modified nano-silica A.

[0070] Preparation Example 2 of Modified Nano-Silica: Fumed silica was added to a modification apparatus and heated under nitrogen at 120°C for 30 minutes. 1,3-diphenyltetramethyldisilazane was then added at a molar ratio of 2:1. Under nitrogen protection, the fumed silica and 1,3-diphenyltetramethyldisilazane underwent a hydroxyl substitution reaction to produce modified nano-silica B.

[0071] Preparation Example 3 of Modified Nano-Silica: Fumed silica was added to a modification apparatus and heated under nitrogen at 180°C for 50 minutes. 1,3-diphenyltetramethyldisilazane was then added at a molar ratio of 2:1. Under nitrogen protection, the fumed silica and 1,3-diphenyltetramethyldisilazane underwent a hydroxyl substitution reaction to produce modified nano-silica C.

[0072] Comparative Preparation Example 1 of Modified Nano-Silica

[0073] The method is the same as Preparation Example 1 of modified nano-silica, except that in the preparation of modified nano-silica, the heating temperature is 100° C., that is, the hydroxyl substitution reaction temperature is 100° C., to generate modified nano-silica D-1.

[0074] Comparative Preparation Example 2 of Modified Nano-Silica

[0075] The method is the same as Preparation Example 1 of modified nano-silica, except that in the preparation of modified nano-silica, the heating temperature is 200° C., that is, the hydroxyl substitution reaction temperature is 200° C., to generate modified nano-silica D-2.

[0076] The hydroxyl content and particle size distribution of fumed silica, modified nano-silica A, modified nano-silica B, modified nano-silica C, modified nano-silica D-1 and modified nano-silica D-2 were tested, and the results are shown in Table 1.

[0077] The hydroxyl content of the modified nano-silica was tested in accordance with T / FSI 049-2020, and the particle size was tested in accordance with GB / T13221. The test results are shown in Table 1. Note: For example, the maximum particle size range data is 10-15 (46.24%), which means that based on the particle size interval width of 5 nm, the maximum particle size range is 10-15 nm and accounts for 46.24% by weight.

[0078] Table 1

[0079] Example 1

[0080] Preparation of monoalkoxy titanate: 1 part of 2,6-dimethyl-4-heptanol was added to a reactor, and TiCl4 and ZnO were added. The molar ratio of 2,6-dimethyl-4-heptanol to TiCl4 was 4:1, and the amount of ZnO was 0.01 parts. The pH of the reaction system was adjusted to 9.0, the temperature was 150°C, the reaction time was 1 hour, and the monoalkoxy titanate was separated.

[0081] Preparation of anti-corrosion oil: In a stainless steel barrel, add 1 part of monoalkoxy titanate and 0.2 parts of dihydroxypropyl octadecanoate, mix them at room temperature, and stir at high speed. While stirring, add 0.02 parts of chemically pure polydimethylsiloxane (weight-average molecular weight of 2600 g / mol, the same below), 0.03 parts of chemically pure thiodiphenylamine, 0.03 parts of modified nano-silica A, 0.2 parts of nano-titanium dioxide, 0.2 parts of graphene, and 0.1 parts of aluminum tripolyphosphate. Stir at high speed for 0.5 h, then grind with a sand mill for 0.5 h to obtain anti-corrosion oil.

[0082] Preparation of the outer protective layer: In a stainless steel barrel, 100 parts of polyethylene (weight-average molecular weight of 2500 g / mol, the same below) and 0.2 parts of ethylene-vinyl acetate copolymer (weight-average molecular weight of 2800 g / mol, the weight ratio of the structural unit provided by ethylene to the structural unit provided by vinyl acetate in the ethylene-vinyl acetate copolymer is 70:30, the same below) were added and mixed. Then, 0.4 parts of benzotriazole and 0.5 parts of thiocarbamate were added while stirring. The temperature was controlled at 25°C and stirring was continued. 8 parts of graphene, 8 parts of silicon micropowder and 3 parts of neodymium oxide were added again while stirring. After stirring for 5 minutes, a sheet was made by hot melt extrusion to obtain the outer protective layer.

[0083] Preparation of anti-corrosion materials: Place the above-mentioned outer protective layer (3mm thick) and the middle fiber layer (made of polyester fiber, 2.5mm thick, with a tensile strength of 11.7MPa and an elongation at break of 10.2%) on the surface of the hydraulic press in sequence. At a temperature of 75°C, use a hydraulic press with a pressure controlled at 15MPa to press the two layers of material into one layer. After pressing, apply anti-corrosion oil on the middle fiber layer to form an anti-corrosion base oil layer with a thickness of 2.5mm.

[0084] Example 2

[0085] Preparation of monoalkoxy titanate: 1 part of 2,6-dimethyl-4-heptanol was added to a reactor, and TiCl4 and ZnO were added, the molar ratio of 2,6-dimethyl-4-heptanol to TiCl4 was 4:1, and the amount of ZnO was 0.02 parts. The pH of the reaction system was adjusted to 10.0, the temperature was 180°C, the reaction time was 2 hours, and the monoalkoxy titanate was separated.

[0086] Preparation of anti-corrosion oil: In a stainless steel barrel, add 1 part of monoalkoxy titanate and 0.1 part of dihydroxypropyl octadecanoate, mix them at room temperature, and stir at high speed. While stirring, add 0.01 part of chemically pure polydimethylsiloxane, 0.01 part of chemically pure thiodiphenylamine, 0.01 part of modified nano-silica B, 0.1 part of nano-titanium dioxide, 0.1 part of graphene, and 0.1 part of aluminum tripolyphosphate. Stir at high speed for 0.5 h, then grind with a sand mill for 0.5 to obtain anti-corrosion oil.

[0087] Preparation of the outer protective layer: In a stainless steel barrel, add 100 parts of polyethylene and 0.1 parts of ethylene-vinyl acetate copolymer, mix them, then add 0.2 parts of benzotriazole and 0.3 parts of thiocarbamate while stirring, control the temperature at 25°C, continue stirring, and add 5 parts of graphene, 6 parts of silicon powder and 2 parts of neodymium oxide again while stirring. After continuing stirring for 5 minutes, use hot melt extrusion to make a sheet to obtain the outer protective layer.

[0088] Preparation of anti-corrosion materials: Place the above-mentioned outer protective layer (thickness 2mm) and the middle fiber layer (made of polyester fiber, thickness 2mm, tensile strength 9.50MPa, elongation at break 10.5%) on the surface of the hydraulic press in sequence. At a temperature of 50°C, use a hydraulic press with the pressure controlled at 10MPa to press the two layers of material into one layer. After pressing, apply anti-corrosion oil on the middle fiber layer to form an anti-corrosion base oil layer with a thickness of 2.5mm.

[0089] Example 3

[0090] Preparation of monoalkoxy titanate: 1 part of 2,6-dimethyl-4-heptanol was added to a reactor, and TiCl4 and ZnO were added, the molar ratio of 2,6-dimethyl-4-heptanol to TiCl4 was 4:1, and the amount of ZnO was 0.05 parts. The pH of the reaction system was adjusted to 9.5, the temperature was 170°C, the reaction time was 1.5 hours, and the monoalkoxy titanate was separated.

[0091] Preparation of anti-corrosion oil: In a stainless steel barrel, add 1 part of monoalkoxy titanate and 0.3 parts of dihydroxypropyl octadecanoate, mix them at room temperature, and stir at high speed. While stirring, add 0.03 parts of chemically pure polydimethylsiloxane, 0.04 parts of chemically pure thiodiphenylamine, 0.04 parts of modified nano-silica C, 0.5 parts of nano-titanium dioxide, 0.5 parts of graphene, and 0.5 parts of aluminum tripolyphosphate. Stir at high speed for 0.5 hours and then grind with a sand mill for 0.5 hours to obtain anti-corrosion oil.

[0092] Preparation of the outer protective layer: In a stainless steel barrel, add 100 parts of polyethylene and 0.3 parts of ethylene-vinyl acetate copolymer, mix them, then add 0.8 parts of benzotriazole and 0.6 parts of thiocarbamate while stirring, control the temperature at 25°C, continue stirring, and add 10 parts of graphene, 10 parts of silicon micropowder and 5 parts of neodymium oxide again while stirring, continue stirring for 5 minutes, and then use hot melt extrusion to make a sheet to obtain the outer protective layer.

[0093] Preparation of anti-corrosion materials: Place the above-mentioned outer protective layer (5mm thick) and the middle fiber layer (made of polyester fiber, 3mm thick, tensile strength of 13.95MPa, and elongation at break of 10.6%) on the surface of the hydraulic press in sequence. At a temperature of 90°C, use a hydraulic press with the pressure controlled at 20MPa to press the two layers of material into one layer. After pressing, apply anti-corrosion oil on the middle fiber layer to form an anti-corrosion base oil layer with a thickness of 3mm.

[0094] Example 4

[0095] Preparation of monoalkoxy titanate: 1 part of 2,6-dimethyl-4-heptanol was added to a reactor, and TiCl4 and ZnO were added, the molar ratio of 2,6-dimethyl-4-heptanol to TiCl4 was 4:1, and the amount of ZnO was 0.03 parts. The pH of the reaction system was adjusted to 9.8, the temperature was 160°C, the reaction time was 2 hours, and the monoalkoxy titanate was separated.

[0096] Preparation of anti-corrosion oil: In a stainless steel barrel, add 1 part of monoalkoxy titanate and 0.2 parts of dihydroxypropyl octadecanoate, mix them at room temperature, and stir at high speed. While stirring, add 0.02 parts of chemically pure polydimethylsiloxane, 0.03 parts of chemically pure thiodiphenylamine, 0.03 parts of modified nano-silica A, 0.2 parts of nano-titanium dioxide, 0.2 parts of graphene, and 0.1 parts of aluminum tripolyphosphate. Stir at high speed for 0.5 hours and then grind with a sand mill for 0.5 hours to obtain anti-corrosion oil.

[0097] Preparation of the outer protective layer: In a stainless steel barrel, add 100 parts of polyethylene and 0.2 parts of ethylene-vinyl acetate copolymer, mix them, then add 0.4 parts of benzotriazole and 0.5 parts of thiocarbamate while stirring, control the temperature at 25°C, continue stirring, and add 8 parts of graphene, 8 parts of silicon micropowder and 3 parts of neodymium oxide again while stirring. After continuing stirring for 5 minutes, use hot melt extrusion to make a sheet to obtain the outer protective layer.

[0098] Preparation of anti-corrosion materials: Place the above-mentioned outer protective layer (thickness 2mm) and the middle fiber layer (made of polyurethane fiber, thickness 2mm, tensile strength 9.52MPa, elongation at break 10.7%) on the surface of the hydraulic press in sequence. At a temperature of 50°C, use a hydraulic press with the pressure controlled at 10MPa to press the two layers of material into one layer. After pressing, apply anti-corrosion oil on the middle fiber layer to form an anti-corrosion base oil layer with a thickness of 2.5mm.

[0099] Example 5

[0100] Preparation of monoalkoxy titanate: 1 part of 2,6-dimethyl-4-heptanol was added to a reactor, and TiCl4 and ZnO were added, the molar ratio of 2,6-dimethyl-4-heptanol to TiCl4 was 4:1, and the amount of ZnO was 0.04 parts. The pH of the reaction system was adjusted to 9.2, the temperature was 160°C, the reaction time was 1 hour, and the monoalkoxy titanate was separated.

[0101] Preparation of anti-corrosion oil: In a stainless steel barrel, add 1 part of monoalkoxy titanate and 0.2 parts of dihydroxypropyl octadecanoate, mix them at room temperature, and stir at high speed. While stirring, add 0.02 parts of chemically pure polydimethylsiloxane, 0.03 parts of chemically pure thiodiphenylamine, 0.03 parts of modified nano-silica A, 0.2 parts of nano-titanium dioxide, 0.2 parts of graphene, and 0.1 parts of aluminum tripolyphosphate. Stir at high speed for 0.5 hours and then grind with a sand mill for 0.5 hours to obtain anti-corrosion oil.

[0102] Preparation of the outer protective layer: In a stainless steel barrel, add 100 parts of polyethylene and 0.2 parts of ethylene-vinyl acetate copolymer, mix them, then add 0.4 parts of benzotriazole and 0.5 parts of thiocarbamate while stirring, control the temperature at 25°C, continue stirring, and add 8 parts of graphene, 8 parts of silicon powder, and 3 parts of neodymium oxide again while stirring. After continuing stirring for 5 minutes, use hot melt extrusion to make a sheet to obtain the outer protective layer.

[0103] Preparation of anti-corrosion materials: Place the above-mentioned outer protective layer (5mm thick) and the middle fiber layer (made of polyurethane fiber, 3mm thick, tensile strength of 13.90MPa, elongation at break 10.2%) on the surface of the hydraulic press in sequence. At a temperature of 90°C, use a hydraulic press with the pressure controlled at 20MPa to press the two layers of material into one layer. After pressing, apply anti-corrosion oil on the middle fiber layer to form an anti-corrosion base oil layer with a thickness of 3mm.

[0104] Example 6

[0105] Preparation of monoalkoxy titanate: 1 part of 2,6-dimethyl-4-heptanol was added to a reactor, and TiCl4 and ZnO were added, the molar ratio of 2,6-dimethyl-4-heptanol to TiCl4 was 4:1, and the amount of ZnO was 0.01 parts. The pH of the reaction system was adjusted to 9.0, the temperature was 150°C, the reaction time was 2 hours, and the monoalkoxy titanate was separated.

[0106] Preparation of anti-corrosion oil: In a stainless steel barrel, add 1 part of monoalkoxy titanate and 0.1 part of dihydroxypropyl octadecanoate, mix and stir at high speed under room temperature, add 0.01 part of chemically pure polydimethylsiloxane, 0.01 part of chemically pure thiodiphenylamine, 0.01 part of modified nano-silica B, 0.1 part of nano-titanium dioxide, 0.3 part of graphene, and 0.1 part of aluminum tripolyphosphate while stirring, stir at high speed for 0.5 h, and then grind with a sand mill for 0.5 h to obtain anti-corrosion oil.

[0107] Preparation of the outer protective layer: In a stainless steel barrel, add 100 parts of polyethylene and 0.1 parts of ethylene-vinyl acetate copolymer, mix them, then add 0.2 parts of benzotriazole and 0.3 parts of thiocarbamate while stirring, control the temperature at 25°C, continue stirring, add 5 parts of graphene, 6 parts of silicon powder and 2 parts of neodymium oxide again while stirring, continue stirring for 5 minutes, and then use hot melt extrusion to make a sheet to obtain the outer protective layer.

[0108] Preparation of anti-corrosion materials: Place the above-mentioned outer protective layer (3mm thick) and the middle fiber layer (made of polyurethane fiber, 2.5mm thick, with a tensile strength of 11.50MPa and an elongation at break of 10.5%) on the surface of the hydraulic press in sequence. At a temperature of 75°C, use a hydraulic press with a pressure controlled at 15MPa to press the two layers of material into one layer. After pressing, apply anti-corrosion oil on the middle fiber layer to form an anti-corrosion base oil layer with a thickness of 2.5mm.

[0109] Example 7

[0110] Preparation of monoalkoxy titanate: 1 part of 2,6-dimethyl-4-heptanol was added to a reactor, and TiCl4 and ZnO were added, the molar ratio of 2,6-dimethyl-4-heptanol to TiCl4 was 4:1, and the amount of ZnO was 0.04 parts. The pH of the reaction system was adjusted to 9.6, the temperature was 165°C, the reaction time was 1.8 hours, and the monoalkoxy titanate was separated.

[0111] Preparation of anti-corrosion oil: In a stainless steel barrel, add 1 part of monoalkoxy titanate and 0.1 part of dihydroxypropyl octadecanoate, mix them at room temperature, and stir at high speed. While stirring, add 0.01 part of chemically pure polydimethylsiloxane, 0.01 part of chemically pure thiodiphenylamine, 0.01 part of modified nano-silica B, 0.1 part of nano-titanium dioxide, 0.1 part of graphene, and 0.1 part of aluminum tripolyphosphate. Stir at high speed for 0.5 h, then grind with a sand mill for 0.5 h to obtain anti-corrosion oil.

[0112] Preparation of the outer protective layer: In a stainless steel barrel, add 100 parts of polyethylene and 0.1 parts of ethylene-vinyl acetate copolymer, mix them, then add 0.2 parts of benzotriazole and 0.3 parts of thiocarbamate while stirring, control the temperature at 25°C, continue stirring, add 5 parts of graphene, 6 parts of silicon powder and 2 parts of neodymium oxide again while stirring, continue stirring for 5 minutes, and then use hot melt extrusion to make a sheet to obtain the outer protective layer.

[0113] Preparation of anti-corrosion materials: Place the above-mentioned outer protective layer (5mm thick) and the middle fiber layer (made of polyamide fiber, 3mm thick, tensile strength of 13.98MPa, and elongation at break of 10.4%) on the surface of the hydraulic press in sequence. At a temperature of 90°C, use a hydraulic press with the pressure controlled at 20MPa to press the two layers of material into one layer. After pressing, apply anti-corrosion oil on the middle fiber layer to form an anti-corrosion base oil layer with a thickness of 3mm.

[0114] Example 8

[0115] Preparation of monoalkoxy titanate: 1 part of 2,6-dimethyl-4-heptanol was added to a reactor, and TiCl4 and ZnO were added, the molar ratio of 2,6-dimethyl-4-heptanol to TiCl4 was 4:1, and the amount of ZnO was 0.01 parts. The pH of the reaction system was adjusted to 10.0, the temperature was 165°C, the reaction time was 2.0 h, and the monoalkoxy titanate was separated.

[0116] Preparation of anti-corrosion oil: In a stainless steel barrel, add 1 part of monoalkoxy titanate and 0.3 part of dihydroxypropyl octadecanoate, mix them at room temperature, and stir at high speed. While stirring, add 0.03 parts of chemically pure polydimethylsiloxane, 0.04 parts of chemically pure thiodiphenylamine, 0.04 parts of modified nano-silica C, 0.5 parts of nano-titanium dioxide, 0.5 parts of graphene, and 0.3 parts of aluminum tripolyphosphate. Stir at high speed for 0.5 hours and then grind with a sand mill for 0.5 hours to obtain anti-corrosion oil.

[0117] Preparation of the outer protective layer: In a stainless steel barrel, add 100 parts of polyethylene and 0.3 parts of ethylene-vinyl acetate copolymer, mix them, then add 0.8 parts of benzotriazole and 0.6 parts of thiocarbamate while stirring, control the temperature at 25°C, continue stirring, add 10 parts of graphene, 10 parts of silicon powder and 5 parts of neodymium oxide while stirring, continue stirring for 5 minutes, and then use hot melt extrusion to make a sheet to obtain the outer protective layer.

[0118] Preparation of anti-corrosion materials: Place the above-mentioned outer protective layer (3mm thick) and the middle fiber layer (made of polyamide fiber, 2.5mm thick, with a tensile strength of 11.6MPa and an elongation at break of 10.0%) on the surface of the hydraulic press in sequence. At a temperature of 75°C, use a hydraulic press with a pressure controlled at 15MPa to press the two layers of material into one layer. After pressing, apply anti-corrosion oil on the middle fiber layer to form an anti-corrosion base oil layer with a thickness of 2.5mm.

[0119] Example 9

[0120] Preparation of monoalkoxy titanate: 1 part of 2,6-dimethyl-4-heptanol was added to a reactor, and TiCl4 and ZnO were added. The molar ratio of 2,6-dimethyl-4-heptanol to TiCl4 was 4:1, and the amount of ZnO was 0.01 parts. The pH of the reaction system was adjusted to 9.8, the temperature was 175°C, the reaction time was 1.8 hours, and the monoalkoxy titanate was separated.

[0121] Preparation of anti-corrosion oil: In a stainless steel barrel, add 1 part of monoalkoxy titanate and 0.3 parts of dihydroxypropyl octadecanoate, mix them at room temperature, and stir at high speed. While stirring, add 0.03 parts of chemically pure polydimethylsiloxane, 0.04 parts of chemically pure thiodiphenylamine, 0.04 parts of modified nano-silica C, 0.5 parts of nano-titanium dioxide, 0.5 parts of graphene, and 0.5 parts of aluminum tripolyphosphate. Stir at high speed for 0.5 hours and then grind with a sand mill for 0.5 hours to obtain anti-corrosion oil.

[0122] Preparation of the outer protective layer: In a stainless steel barrel, add 100 parts of polyethylene and 0.3 parts of ethylene-vinyl acetate copolymer, mix them, then add 0.8 parts of benzotriazole and 0.6 parts of thiocarbamate while stirring, control the temperature at 25°C, continue stirring, and add 10 parts of graphene, 10 parts of silicon micropowder and 5 parts of neodymium oxide again while stirring, continue stirring for 5 minutes, and then use hot melt extrusion to make a sheet to obtain the outer protective layer.

[0123] Preparation of anti-corrosion materials: Place the above-mentioned outer protective layer (thickness 2mm) and the middle fiber layer (made of polyamide fiber, thickness 2mm, tensile strength 9.63MPa, elongation at break 10.4%) on the surface of the hydraulic press in sequence. At a temperature of 50°C, use a hydraulic press with the pressure controlled at 10MPa to press the two layers of material into one layer. After pressing, apply anti-corrosion oil on the middle fiber layer to form an anti-corrosion base oil layer with a thickness of 2.5mm.

[0124] Comparative Example 1

[0125] The same as Example 1, except that, in the preparation of the anti-corrosion oil, 1 part of monoalkoxy titanate and 0.2 part of dihydroxypropyl octadecanoate were added, mixed at room temperature, and stirred at high speed. While stirring, 0.02 parts of chemically pure polydimethylsiloxane, 0.03 parts of chemically pure thiodiphenylamine, 0.06 parts of modified nanosilica A, 0.8 parts of nano titanium dioxide, 0.8 parts of graphene and 0.7 parts of aluminum tripolyphosphate were added.

[0126] Comparative Example 2

[0127] The same as Example 1, except that, in the preparation of the outer protective layer, 100 parts of polyethylene and 0.05 parts of ethylene-vinyl acetate copolymer were added to a stainless steel barrel and mixed, and then 0.1 parts of benzotriazole and 0.8 parts of thiocarbamate were added while stirring, and the temperature was controlled at 25°C and continued to be stirred. 13 parts of graphene, 2 parts of silicon powder and 9 parts of neodymium oxide were added while stirring.

[0128] Comparative Example 3

[0129] The same as Example 1, except that an equal amount of fumed silica is used instead of modified nano-silica A.

[0130] Comparative Example 4

[0131] The same as Example 1, except that the modified nano-silica D-1 is used in equal amounts to replace the modified nano-silica A.

[0132] Comparative Example 5

[0133] The same as Example 1, except that the modified nano-silica D-2 is used in equal amounts to replace the modified nano-silica A.

[0134] Comparative Example 6

[0135] The same as Example 1, except that, in the preparation of the anti-corrosion oil, an equal amount of C9 petroleum resin HM-10 is used instead of monoalkoxy titanate.

[0136] Test Example 1

[0137] Anticorrosive oils were prepared with reference to Examples 1-9 and Comparative Examples 1 and 3-6, and the properties of the anticorrosive oils were tested. The test results are shown in Table 2.

[0138] The test method for water repellency is as follows: place anti-corrosion oil with a mass of m0 on a glass surface dish, with the anti-corrosion oil flush with the edge of the glass surface dish and the surface smooth, place it in a 3wt% sodium chloride aqueous solution, soak it at room temperature for 48 hours, then take it out, wipe off the moisture on the outside of the glass surface dish, and weigh it. The mass of the anti-corrosion oil after soaking is m1, and the water repellency is calculated as: m0 / m 1* 100%.

[0139] Test method for anti-corrosion performance: Apply anti-corrosion oil on The 20# steel pipe (purchased from Tianjin Da Seamless United Steel Co., Ltd.) was then immersed in a 3wt% sodium chloride aqueous solution and placed at room temperature for 30 days. After removing the anti-corrosion oil, the surface of the steel pipe was observed for signs of rust or corrosion, and whether the anti-corrosion oil had fallen off.

[0140] Table 2

[0141] The anti-corrosion oil of the present invention does not contain solvents, thus achieving a solid content of 100% and being free of non-volatile harmful substances, making it environmentally friendly. As shown in Table 2, the anti-corrosion oil prepared in the present invention has a hydrophobicity of over 97%, exhibiting excellent hydrophobic properties. This effectively isolates seawater from contact with steel pipes, thereby protecting them from seawater corrosion. The anti-corrosion oil prepared in the present invention was immersed in a 3wt% sodium chloride aqueous solution for 30 days without shedding, demonstrating its excellent adhesion and long-lasting corrosion protection.

[0142] Test Example 2

[0143] Outer sheaths were prepared with reference to Examples 1-9 and Comparative Example 2, and the properties of the outer sheaths were tested. The test results are shown in Table 3. The tensile strength was tested in accordance with GB / T 1040.2, the elongation at break was tested in accordance with GB / T 1040.2, the impact strength was tested in accordance with Appendix K of GB / T 23257, and the UV aging resistance (3000 h) was tested in accordance with Appendix J of GB / T 23257.

[0144] Table 3

[0145] It can be seen from Table 3 that the outer protective layer prepared in the present invention has excellent tensile strength, impact resistance and UV aging resistance, and thus the anti-corrosion material prepared using the outer protective layer can have excellent tensile strength, impact resistance and UV aging resistance.

[0146] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited thereto. Within the technical concept of the present invention, various simple variations of the technical solution of the present invention may be made, including combining the various technical features in any other appropriate manner. These simple variations and combinations should also be regarded as disclosed in the present invention and fall within the scope of protection of the present invention.

Claims

1. An antiseptic oil, characterized in that: The anticorrosive oil contains monoalkoxy titanate, dihydroxypropyl octadecanoate, an organic silicon defoamer, an antioxidant, modified nano silicon dioxide, nano titanium dioxide, graphene and aluminum tripolyphosphate; The hydroxyl content of the modified nano-silicon dioxide is 0.1-0.5 / nm. 2 The particle size of the modified nano-silica satisfies: based on a particle size interval width of 5 nm, the maximum particle size range is 10-15 nm and accounts for 45-55% by weight.

2. The antiseptic oil according to claim 1, wherein The alkoxy group in the monoalkoxy titanate is C5-C 10 of alkoxy.

3. The antiseptic oil according to claim 1, wherein The alkoxy group in the monoalkoxy titanate is 2,6-dimethyl-4-heptyloxy.

4. The antiseptic oil according to claim 3, wherein The preparation method of the monoalkoxy titanate is as follows: TiCl4 and 2,6-dimethyl-4-heptanol are subjected to modification reaction under ZnO catalysis to obtain the monoalkoxy titanate.

5. The antiseptic oil according to claim 4, wherein During the preparation of the monoalkoxy titanate, the mass ratio of the 2,6-dimethyl-4-heptanol to the ZnO is 1:0.01-0.05, the molar ratio of the 2,6-dimethyl-4-heptanol to TiCl4 is 3-5:1, the pH of the modification reaction system is 9-10, the temperature of the modification reaction is 150-180°C, and the time of the modification reaction is 1-2h.

6. The antiseptic oil according to claim 1, wherein The modified nano-silica is nano-silica modified by arylsilazane.

7. The antiseptic oil according to claim 6, wherein The preparation method of the modified nano silicon dioxide is as follows: under nitrogen conditions, gas phase silicon dioxide and 1,3-diphenyltetramethyldisilazane undergo hydroxyl substitution reaction to obtain the modified nano silicon dioxide.

8. The antiseptic oil according to claim 7, wherein In the preparation of the modified nano-silica, the temperature of the hydroxyl replacement reaction is 120-180° C., the time of the hydroxyl replacement reaction is 30-50 min, and the molar ratio of the fumed silica to 1,3-diphenyltetramethyldisilazane is 1-3:

1.

9. The antiseptic oil according to claim 1, wherein The organosilicon defoamer is selected from polydimethylsiloxane and / or polyethylene glycol siloxane; And / or, the antioxidant is selected from one or more of thiodiphenylamine, diphenylamine, and diisooctyldiphenylamine.

10. The antiseptic oil according to claim 1, wherein Relative to 1 part by weight of the monoalkoxy titanate, the content of the dihydroxypropyl octadecanoate is 0.1-0.3 part by weight, the content of the silicone defoamer is 0.01-0.03 part by weight, the content of the antioxidant is 0.01-0.04 part by weight, the content of the modified nano-silica is 0.01-0.04 part by weight, the content of the nano-titanium dioxide is 0.1-0.5 part by weight, the content of the graphene is 0.1-0.5 part by weight, and the content of the aluminum tripolyphosphate is 0.1-0.5 part by weight.

11. An anti-corrosion material, characterized in that: The anti-corrosion material comprises an anti-corrosion base oil layer, an intermediate fiber layer and an outer protective layer; wherein the anti-corrosion oil forming the anti-corrosion base oil layer is the anti-corrosion oil according to any one of claims 1-10.

12. The anticorrosive material according to claim 11, wherein: The material of the intermediate fiber layer is selected from one or more of polyester fiber, polyurethane fiber and polyamide fiber.

13. The anticorrosive material according to claim 11, wherein: Among the raw materials for preparing the outer protective layer, relative to 100 parts by weight of polyethylene, the content of ethylene-vinyl acetate copolymer is 0.1-0.3 parts by weight, the content of benzotriazole is 0.2-0.8 parts by weight, the content of thiocarbamate is 0.3-0.6 parts by weight, the content of graphene is 5-10 parts by weight, the content of silicon micropowder is 6-10 parts by weight, and the content of neodymium oxide is 2-5 parts by weight.

14. The anticorrosive material according to claim 13, wherein: The weight average molecular weight of the polyethylene is 2000-3000 g / mol; and / or, the weight average molecular weight of the ethylene-vinyl acetate copolymer is 1000-3000 g / mol; And / or, the weight ratio of the structural units provided by ethylene to the structural units provided by vinyl acetate in the ethylene-vinyl acetate copolymer is 70-75:25-30.

15. A method for preparing an anti-corrosion material, characterized in that: The preparation method comprises: laying out the outer protective layer and the middle fiber layer and then pressing them, and after the pressing is completed, coating the anti-corrosion oil according to any one of claims 1 to 10 on the middle fiber layer to form the anti-corrosion base oil layer.

16. The preparation method according to claim 15, wherein: The outer protective layer has a thickness of 2-5 mm, an elongation at break of 740-755%, a tensile strength of 20-50 MPa, can pass an 8J / mm impact strength test, and a 3000h UV aging resistance tensile performance retention rate of 84-87%; And / or, the thickness of the intermediate fiber layer is 2-3 mm, the tensile strength is 10 MPa-12 MPa, and the elongation at break is 10%-15%; And / or, the anti-corrosion bottom oil layer has a thickness of 2-3 mm and a water repellency of 96%-98.8%.

17. The preparation method according to claim 15 or 16, wherein: The pressing method is hydraulic pressing; wherein the temperature of the hydraulic pressing is 50-90° C. and the pressure is 10-20 MPa.

18. The anti-corrosion material obtained by the preparation method according to any one of claims 15 to 17.

19. Use of the anti-corrosion material according to claim 18 in corrosion protection of marine steel materials.

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