Ship remanufacturing nanorepair material and preparation method and application thereof

Abstract

The present application relates to the technical field of nano repair material, in particular to a kind of ship remanufacturing nano repair material and its preparation method and application, and nano repair material includes the following weight parts raw materials: nano tungsten carbide 30~35 parts, nano titanium carbide 25~30 parts, nano silicon carbide 25~30 parts, modified boron nitride powder 10~15 parts, based on carbon nanotube doping's compatibilizer 6~9 parts.The nano repair material of the present application uses nano tungsten carbide, nano titanium carbide and nano silicon carbide as matrix, while adding modified boron nitride powder, based on carbon nanotube doping's compatibilizer, which is mutually adjusted and matched, optimized and improved, and the obtained nano repair material product has excellent wear resistance, impact resistance and stain resistance, and the performance of the product can be improved in coordination, and the heat resistance and corrosion resistance of the product are significantly improved.

Description

Technical Field

[0001] This invention relates to the field of nano-repair materials technology, specifically to a nano-repair material for ship remanufacturing, its preparation method, and its application. Background Technology

[0002] In recent years, the application of nanomaterials in ship repair has gradually attracted attention. Although existing nano-repair materials can achieve repair effects in ship manufacturing, the repaired material structure has poor wear resistance and impact resistance, as well as poor anti-fouling properties. It is difficult to achieve a coordinated improvement in wear resistance, impact resistance, and anti-fouling properties. In addition, the product has poor heat resistance and corrosion stability, which limits the product's efficiency. This invention needs further improvement. Summary of the Invention

[0003] In view of the deficiencies of the prior art, the purpose of this invention is to provide a nano-repair material for ship remanufacturing, its preparation method and application, so as to solve the problems mentioned in the background art.

[0004] The present invention solves the technical problem by adopting the following technical solution:

[0005] This invention provides a nano-repair material for ship remanufacturing, the nano-repair material comprising the following raw materials in parts by weight:

[0006] 30-35 parts of nano-tungsten carbide, 25-30 parts of nano-titanium carbide, 25-30 parts of nano-silicon carbide, 10-15 parts of modified boron nitride powder, and 6-9 parts of a carbon nanotube-based additive.

[0007] Preferably, the particle size of the nano-tungsten carbide is 10-15 nm; the particle size of the nano-titanium carbide is 8-12 nm; and the particle size of the nano-silicon carbide is 5-8 nm.

[0008] Preferably, the modified boron nitride powder is prepared by:

[0009] S1: Stir boron nitride in a sufficient amount of potassium permanganate solution with a mass fraction of 5-8% until homogeneous, then wash with water, filter, and dry.

[0010] The dried boron nitride is then heat-treated at 210~230℃ for 1~2h, and then cooled to 60~65℃ at a rate of 2~5℃ / min and held at that temperature to obtain pretreated boron nitride.

[0011] S2: The pretreated boron nitride and the modified liquid are mixed and modified at a weight ratio of 3:(5~7) with a stirring speed of 350~400r / min for 1~2h. After stirring, the mixture is filtered and dried to obtain modified boron nitride powder.

[0012] Preferably, the modified liquid is prepared by uniformly mixing 3-5 parts by weight of graphene, 2-4 parts by weight of potassium titanate whiskers, 1-2 parts by weight of zirconium oxide, and 5-8 parts by weight of sodium citrate solution with a mass fraction of 4-6% to prepare the modified liquid.

[0013] Modified boron nitride powder is produced by activating boron nitride with potassium permanganate solution and then optimizing it with thermal modification. Through continuous thermal modification treatment, the activity of boron nitride is activated. At the same time, the modified liquid is stirred and improved. The graphene, potassium titanate whiskers in the modified liquid are combined with zirconium oxide and sodium citrate solution. Through the mutual adjustment and optimization of the raw materials, and the use of potassium titanate whiskers with a whisker structure to mix with graphene, the modified boron nitride powder produced in the system further enhances the performance coordination and stability of the product.

[0014] Preferably, the preparation method of the carbon nanotube-doped synergist is as follows:

[0015] S01: Disperse carbon nanotubes evenly in water at 11 to 15 times the total weight of carbon nanotubes, then add 10 to 15% of the total weight of carbon nanotubes of silane coupling agent KH550, stir evenly, then filter and dry to obtain silane-modified carbon nanotubes.

[0016] SO2: Mix 3-5 parts by weight of nano cobalt powder, 2-3 parts by weight of lanthanum oxide, 1-2 parts by weight of barium nitrate solution, and 5-8 parts by weight of sodium dodecylbenzenesulfonate solution evenly to obtain a doped solution;

[0017] Silane-modified carbon nanotubes and doping solution were mixed and stirred evenly at a weight ratio of 5:(7~9) to obtain a modified solution doped with carbon nanotubes.

[0018] S03: Preparation of additives;

[0019] S04: The modified liquid and the additive doped with carbon nanotubes were mixed and ball-milled at a weight ratio of (7~9):5. The ball milling speed was 1000~1500 r / min and the ball milling time was 1~2 h. After the ball milling was completed, the mixture was filtered and dried to obtain the additive based on carbon nanotube doping.

[0020] Preferably, the barium nitrate solution has a mass fraction of 2-5%; the sodium dodecylbenzenesulfonate solution has a mass fraction of 5-8%.

[0021] Preferably, the preparation method of the additive is as follows:

[0022] S03a: Nano Si powder, nano Y powder and Ta powder are blended and sintered at a weight ratio of (4~5):(2~3):1 for 1~1.5h at a sintering temperature of 210~220℃. After sintering, a sintered body is obtained.

[0023] S03b: Place magnesium oxide in a urea solution with a total magnesium oxide content of 5 to 8 times, then add 5 to 8% of the total magnesium oxide content of nano-silica sol, stir evenly, and obtain magnesium oxide solution;

[0024] The sintered body and magnesium oxide liquid are stirred thoroughly at a weight ratio of 4:(5~7), and finally filtered and dried to obtain the additive.

[0025] The carbon nanotube-based additive uses carbon nanotubes modified with silane coupling agent KH550 to optimize their interfacial properties. This is further optimized by blending with a doping solution. The doping solution contains nano-cobalt powder, lanthanum oxide, barium nitrate solution, and sodium dodecylbenzenesulfonate solution, with the nano-cobalt powder, lanthanum oxide, and barium nitrate solution working together to enhance the system's performance. The high surface area of ​​the carbon nanotubes allows for better support of the doping solution structure, thus improving the blending of the additive. Nano-Si powder, nano-Y powder, and Ta powder in the additive serve as the matrix materials. After sintering, they are combined with magnesium oxide using urea solution and nano-silica sol. This improved blending of materials activates the microstructure and strengthens the grains, thereby enhancing the performance of the improved system and optimizing the product's performance stability.

[0026] Preferably, the mass fraction of the urea solution is 2-5%.

[0027] This invention also provides a method for preparing a nano-repair material for ship remanufacturing, comprising the following steps:

[0028] Weigh the raw materials according to the weight proportions, wet ball mill the raw materials thoroughly, and then dry them to obtain the repair material. Deposit the repair material onto the site to be repaired using laser deposition technology. The laser power of the laser deposition technology is 800~900W, and the scanning speed is 4~6mm / s.

[0029] This invention also provides an application of a nano-repair material for ship remanufacturing in ship repair.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] The nano-repair material of this invention uses nano-tungsten carbide, nano-titanium carbide and nano-silicon carbide as a matrix, and adds modified boron nitride powder and carbon nanotube-based doping additives to harmonize and improve each other. The resulting nano-repair material product has excellent wear resistance, impact resistance and stain resistance. The performance of the product can be improved in a coordinated manner, and the product has significant heat resistance and corrosion resistance stability. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to specific examples. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] This embodiment provides a nano-repair material for ship remanufacturing, the nano-repair material comprising the following raw materials in parts by weight:

[0034] 30-35 parts of nano-tungsten carbide, 25-30 parts of nano-titanium carbide, 25-30 parts of nano-silicon carbide, 10-15 parts of modified boron nitride powder, and 6-9 parts of a carbon nanotube-based additive.

[0035] In this embodiment, the particle size of nano-tungsten carbide is 10~15nm; the particle size of nano-titanium carbide is 8~12nm; and the particle size of nano-silicon carbide is 5~8nm.

[0036] The preparation method of the modified boron nitride powder in this embodiment is as follows:

[0037] S1: Stir boron nitride in a sufficient amount of potassium permanganate solution with a mass fraction of 5-8% until homogeneous, then wash with water, filter, and dry.

[0038] The dried boron nitride is then heat-treated at 210~230℃ for 1~2h, and then cooled to 60~65℃ at a rate of 2~5℃ / min and held at that temperature to obtain pretreated boron nitride.

[0039] S2: The pretreated boron nitride and the modified liquid are mixed and modified at a weight ratio of 3:(5~7) with a stirring speed of 350~400r / min for 1~2h. After stirring, the mixture is filtered and dried to obtain modified boron nitride powder.

[0040] The modified liquid in this embodiment is prepared by mixing 3-5 parts by weight of graphene, 2-4 parts by weight of potassium titanate whiskers, 1-2 parts by weight of zirconium oxide, and 5-8 parts by weight of sodium citrate solution with a mass fraction of 4-6% to prepare the modified liquid.

[0041] The preparation method of the carbon nanotube-doped additive in this embodiment is as follows:

[0042] S01: Disperse carbon nanotubes evenly in water at 11 to 15 times the total weight of carbon nanotubes, then add 10 to 15% of the total weight of carbon nanotubes of silane coupling agent KH550, stir evenly, then filter and dry to obtain silane-modified carbon nanotubes.

[0043] SO2: Mix 3-5 parts by weight of nano cobalt powder, 2-3 parts by weight of lanthanum oxide, 1-2 parts by weight of barium nitrate solution, and 5-8 parts by weight of sodium dodecylbenzenesulfonate solution evenly to obtain a doped solution;

[0044] Silane-modified carbon nanotubes and doping solution were mixed and stirred evenly at a weight ratio of 5:(7~9) to obtain a modified solution doped with carbon nanotubes.

[0045] S03: Preparation of additives;

[0046] S04: The modified liquid and the additive doped with carbon nanotubes were mixed and ball-milled at a weight ratio of (7~9):5. The ball milling speed was 1000~1500 r / min and the ball milling time was 1~2 h. After the ball milling was completed, the mixture was filtered and dried to obtain the additive based on carbon nanotube doping.

[0047] In this embodiment, the barium nitrate solution has a mass fraction of 2-5%; the sodium dodecylbenzenesulfonate solution has a mass fraction of 5-8%.

[0048] The preparation method of the additive in this embodiment is as follows:

[0049] S03a: Nano Si powder, nano Y powder and Ta powder are blended and sintered at a weight ratio of (4~5):(2~3):1 for 1~1.5h at a sintering temperature of 210~220℃. After sintering, a sintered body is obtained.

[0050] S03b: Place magnesium oxide in a urea solution with a total magnesium oxide content of 5 to 8 times, then add 5 to 8% of the total magnesium oxide content of nano-silica sol, stir evenly, and obtain magnesium oxide solution;

[0051] The sintered body and magnesium oxide liquid are stirred thoroughly at a weight ratio of 4:(5~7), and finally filtered and dried to obtain the additive.

[0052] The urea solution in this embodiment has a mass fraction of 2-5%.

[0053] This embodiment describes a method for preparing a nano-repair material for ship remanufacturing, comprising the following steps:

[0054] Weigh the raw materials according to the weight proportions, wet ball mill the raw materials thoroughly, and then dry them to obtain the repair material. Deposit the repair material onto the site to be repaired using laser deposition technology. The laser power of the laser deposition technology is 800~900W, and the scanning speed is 4~6mm / s.

[0055] This embodiment describes the application of a nano-repair material for ship remanufacturing in ship repair.

[0056] Example 1

[0057] This embodiment provides a nano-repair material for ship remanufacturing, the nano-repair material comprising the following raw materials in parts by weight:

[0058] 30 parts of nano-tungsten carbide, 25 parts of nano-titanium carbide, 25 parts of nano-silicon carbide, 10 parts of modified boron nitride powder, and 6 parts of a carbon nanotube-based additive.

[0059] In this embodiment, the particle size of nano-tungsten carbide is 10 nm; the particle size of nano-titanium carbide is 8 nm; and the particle size of nano-silicon carbide is 5 nm.

[0060] The preparation method of the modified boron nitride powder in this embodiment is as follows:

[0061] S1: Add boron nitride to a sufficient amount of 5% potassium permanganate solution, stir until homogeneous, then wash with water, filter, and dry.

[0062] The dried boron nitride was then heat-treated at 210°C for 1 hour, and then cooled to 60°C at a rate of 2°C / min and held at that temperature to obtain pretreated boron nitride.

[0063] S2: The pretreated boron nitride and the modified liquid are mixed and modified at a weight ratio of 3:5. The mixing speed is 350 r / min and the mixing time is 1 h. After the mixing is finished, the mixture is filtered and dried to obtain modified boron nitride powder.

[0064] The modified liquid in this embodiment is prepared by mixing 3 parts by weight of graphene, 2 parts by weight of potassium titanate whiskers, 1 part by weight of zirconium oxide, and 5 parts by weight of sodium citrate solution with a mass fraction of 4% uniformly.

[0065] The preparation method of the carbon nanotube-doped additive in this embodiment is as follows:

[0066] S01: Disperse carbon nanotubes evenly in water at 11 times the total weight of carbon nanotubes, then add 10% of the total weight of carbon nanotubes of silane coupling agent KH550, stir evenly, then filter and dry to obtain silane-modified carbon nanotubes.

[0067] S02: Mix 3 parts by weight of nano cobalt powder, 2 parts by weight of lanthanum oxide, 1 part by weight of barium nitrate solution and 5 parts by weight of sodium dodecylbenzenesulfonate solution evenly to obtain a doped solution;

[0068] Silane-modified carbon nanotubes and doping solution were mixed and stirred evenly at a weight ratio of 5:7 to obtain a modified solution doped with carbon nanotubes.

[0069] S03: Preparation of additives;

[0070] S04: The modified liquid and the additive doped with carbon nanotubes were mixed and ball-milled at a weight ratio of 7:5. The ball milling speed was 1000 r / min and the milling time was 1 h. After the ball milling was completed, the mixture was filtered and dried to obtain the additive based on carbon nanotube doping.

[0071] In this embodiment, the barium nitrate solution has a mass fraction of 2%; and the sodium dodecylbenzenesulfonate solution has a mass fraction of 5%.

[0072] The preparation method of the additive in this embodiment is as follows:

[0073] S03a: Nano Si powder, nano Y powder and Ta powder are blended and sintered at a weight ratio of 4:2:1 for 1 hour at a sintering temperature of 210℃. After sintering, a sintered body is obtained.

[0074] S03b: Place magnesium oxide in a urea solution with a total magnesium oxide content of 5 times, then add 5% of the total magnesium oxide content of nano-silica sol, stir evenly to obtain magnesium oxide solution;

[0075] The sintered body and magnesium oxide liquid were stirred thoroughly at a weight ratio of 4:5, and finally filtered and dried to obtain the additive.

[0076] The urea solution in this embodiment has a mass fraction of 2%.

[0077] This embodiment describes a method for preparing a nano-repair material for ship remanufacturing, comprising the following steps:

[0078] Weigh the raw materials according to the weight proportions, wet ball mill the raw materials thoroughly, and then dry them to obtain the repair material. Deposit the repair material onto the site to be repaired using laser deposition technology. The laser power of the laser deposition technology is 800W and the scanning speed is 4mm / s.

[0079] This embodiment describes the application of a nano-repair material for ship remanufacturing in ship repair.

[0080] Example 2

[0081] This embodiment provides a nano-repair material for ship remanufacturing, the nano-repair material comprising the following raw materials in parts by weight:

[0082] 35 parts of nano-tungsten carbide, 30 parts of nano-titanium carbide, 30 parts of nano-silicon carbide, 15 parts of modified boron nitride powder, and 9 parts of a carbon nanotube-based additive.

[0083] In this embodiment, the particle size of nano-tungsten carbide is 15 nm; the particle size of nano-titanium carbide is 12 nm; and the particle size of nano-silicon carbide is 8 nm.

[0084] The preparation method of the modified boron nitride powder in this embodiment is as follows:

[0085] S1: Add boron nitride to a sufficient amount of 8% potassium permanganate solution, stir until homogeneous, then wash with water, filter, and dry.

[0086] The dried boron nitride was then heat-treated at 230°C for 2 hours, and then cooled to 65°C at a rate of 5°C / min and held at that temperature to obtain pretreated boron nitride.

[0087] S2: The pretreated boron nitride and the modified liquid were mixed and modified at a weight ratio of 3:7. The mixing speed was 400 r / min and the mixing time was 2 h. After the mixing was completed, the mixture was filtered and dried to obtain modified boron nitride powder.

[0088] The modified liquid in this embodiment is prepared by mixing 5 parts by weight of graphene, 4 parts by weight of potassium titanate whiskers, 2 parts by weight of zirconium oxide and 8 parts by weight of sodium citrate solution with a mass fraction of 6% to prepare the modified liquid.

[0089] The preparation method of the carbon nanotube-doped additive in this embodiment is as follows:

[0090] S01: Disperse carbon nanotubes evenly in water at 15 times the total weight of carbon nanotubes, then add 15% of the total weight of carbon nanotubes of silane coupling agent KH550, stir evenly, then filter and dry to obtain silane-modified carbon nanotubes.

[0091] S02: Mix 5 parts by weight of nano cobalt powder, 3 parts by weight of lanthanum oxide, 2 parts by weight of barium nitrate solution and 8 parts by weight of sodium dodecylbenzenesulfonate solution evenly to obtain a doped solution;

[0092] Silane-modified carbon nanotubes and doping solution were mixed and stirred evenly at a weight ratio of 5:9 to obtain a modified solution doped with carbon nanotubes.

[0093] S03: Preparation of additives;

[0094] S04: The modified liquid and the additive doped with carbon nanotubes were mixed and ball-milled at a weight ratio of 9:5. The ball milling speed was 1500 r / min and the ball milling time was 2 h. After the ball milling was completed, the mixture was filtered and dried to obtain the additive based on carbon nanotube doping.

[0095] In this embodiment, the barium nitrate solution has a mass fraction of 5%; the sodium dodecylbenzenesulfonate solution has a mass fraction of 8%.

[0096] The preparation method of the additive in this embodiment is as follows:

[0097] S03a: Nano Si powder, nano Y powder and Ta powder are blended and sintered in a weight ratio of 5:3:1 for 1~1.5h at a sintering temperature of 220℃. After sintering, a sintered body is obtained.

[0098] S03b: Place magnesium oxide in a urea solution with 8 times the total amount of magnesium oxide, then add 8% of the total amount of magnesium oxide nano silica sol, stir evenly to obtain magnesium oxide solution;

[0099] The sintered body and magnesium oxide liquid were stirred thoroughly at a weight ratio of 4:7, and finally filtered and dried to obtain the additive.

[0100] The urea solution in this embodiment has a mass fraction of 5%.

[0101] This embodiment describes a method for preparing a nano-repair material for ship remanufacturing, comprising the following steps:

[0102] Weigh the raw materials according to the weight proportions, wet ball mill the raw materials thoroughly, and then dry them to obtain the repair material. Deposit the repair material onto the site to be repaired using laser deposition technology. The laser power of the laser deposition technology is 900W and the scanning speed is 6mm / s.

[0103] This embodiment describes the application of a nano-repair material for ship remanufacturing in ship repair.

[0104] Example 3

[0105] This embodiment provides a nano-repair material for ship remanufacturing, the nano-repair material comprising the following raw materials in parts by weight:

[0106] 32.5 parts of nano-tungsten carbide, 27.5 parts of nano-titanium carbide, 27.5 parts of nano-silicon carbide, 12.5 parts of modified boron nitride powder, and 7.5 parts of carbon nanotube-based doping agent.

[0107] In this embodiment, the particle size of nano-tungsten carbide is 12.5 nm; the particle size of nano-titanium carbide is 10 nm; and the particle size of nano-silicon carbide is 6.5 nm.

[0108] The preparation method of the modified boron nitride powder in this embodiment is as follows:

[0109] S1: Add boron nitride to a sufficient amount of 6.5% potassium permanganate solution, stir until homogeneous, then wash with water, filter, and dry.

[0110] The dried boron nitride was then heat-treated at 220℃ for 1.5h, and then cooled to 62.5℃ at a rate of 3.5℃ / min and held at that temperature to obtain pretreated boron nitride.

[0111] S2: The pretreated boron nitride and the modified liquid are mixed and modified at a weight ratio of 3:6. The mixing speed is 370 r / min and the mixing time is 1.5 h. After the mixing is finished, the mixture is filtered and dried to obtain modified boron nitride powder.

[0112] The modified liquid in this embodiment is prepared by mixing 4 parts by weight of graphene, 3 parts by weight of potassium titanate whiskers, 1.5 parts by weight of zirconium oxide, and 6.5 parts by weight of sodium citrate solution with a mass fraction of 5% uniformly.

[0113] The preparation method of the carbon nanotube-doped additive in this embodiment is as follows:

[0114] S01: Disperse carbon nanotubes evenly in water at 13 times the total weight of carbon nanotubes, then add 12.5% ​​of the total weight of carbon nanotubes of silane coupling agent KH550, stir evenly, then filter and dry to obtain silane-modified carbon nanotubes.

[0115] S02: 4 parts by weight of nano cobalt powder, 2.5 parts by weight of lanthanum oxide, 1.5 parts by weight of barium nitrate solution, and 6.5 parts by weight of sodium dodecylbenzenesulfonate solution are mixed evenly to obtain a doped solution;

[0116] Silane-modified carbon nanotubes and doping solution were mixed and stirred evenly at a weight ratio of 5:8 to obtain a modified solution doped with carbon nanotubes.

[0117] S03: Preparation of additives;

[0118] S04: The modified liquid and the additive doped with carbon nanotubes were mixed and ball-milled at a weight ratio of 8:5. The ball milling speed was 1250 r / min and the ball milling time was 1.5 h. After the ball milling was completed, the mixture was filtered and dried to obtain the additive based on carbon nanotube doping.

[0119] In this embodiment, the barium nitrate solution has a mass fraction of 3.5%; the sodium dodecylbenzenesulfonate solution has a mass fraction of 6.5%.

[0120] The preparation method of the additive in this embodiment is as follows:

[0121] S03a: Nano Si powder, nano Y powder and Ta powder are blended and sintered in a weight ratio of 4.5:2.5:1 for 1.25 h at a sintering temperature of 215 °C. After sintering, a sintered body is obtained.

[0122] S03b: Place magnesium oxide in a urea solution with a total magnesium oxide content of 6.5 times, then add 6.5% of the total magnesium oxide content of nano-silica sol, stir evenly, and obtain magnesium oxide solution;

[0123] The sintered body and magnesium oxide liquid were stirred thoroughly at a weight ratio of 4:6, and finally filtered and dried to obtain the additive.

[0124] The urea solution in this embodiment has a mass fraction of 3.5%.

[0125] This embodiment describes a method for preparing a nano-repair material for ship remanufacturing, comprising the following steps:

[0126] Weigh the raw materials according to the weight proportions, wet ball mill the raw materials thoroughly, and then dry them to obtain the repair material. Deposit the repair material onto the site to be repaired using laser deposition technology. The laser power of the laser deposition technology is 850W and the scanning speed is 5mm / s.

[0127] This embodiment describes the application of a nano-repair material for ship remanufacturing in ship repair.

[0128] Comparative Example 1

[0129] Unlike Example 3, no modified boron nitride powder was added.

[0130] Comparative Example 2

[0131] Unlike Example 3, no modifying liquid was added during the preparation of the modified boron nitride powder.

[0132] Comparative Example 3

[0133] Unlike Example 3, no graphene or potassium titanate whiskers were added to the modified solution.

[0134] Comparative Example 4

[0135] Unlike Example 3, no carbon nanotube-based additives were added.

[0136] Comparative Example 5

[0137] Unlike Example 3, the modified liquid based on carbon nanotube doping was not added in the preparation of the additive.

[0138] Comparative Example 6

[0139] Unlike Example 3, no doping solution was added in the preparation of the carbon nanotube-doped modified solution.

[0140] Comparative Example 7

[0141] Unlike Example 3, no nano-cobalt powder or lanthanum oxide was added to the doping solution.

[0142] Comparative Example 8

[0143] Unlike Example 3, no additives were added in the preparation of the additive based on carbon nanotube doping.

[0144] Comparative Example 9

[0145] Unlike Example 3, no sintered material was added to the additive.

[0146] Comparative Example 10

[0147] Unlike Example 3, no nano-Si powder or nano-Y powder was added to the sintered body.

[0148] Comparative Example 11

[0149] Unlike Example 3, magnesium oxide liquid was not added to the additive.

[0150] The repair material was deposited onto the site to be repaired using laser deposition technology, and then routine tests were performed to test the wear resistance, impact resistance, and stain resistance of Examples 1-3 and Comparative Examples 1-11, as well as the heat resistance and corrosion resistance stability of the products (the site to be repaired was placed under 5% sodium chloride salt spray for 48 hours, and then placed at 65°C for 24 hours, which constituted one cycle, and the cycle was repeated 10 times).

[0151]

[0152] As can be seen from Comparative Examples 1-11 and Examples 1-3;

[0153] The product in Example 3 exhibits excellent abrasion resistance, impact resistance, and stain resistance; under normal conditions, its abrasion resistance can reach as low as 0.5 × 10⁻⁶. mm / Nm, Charpy shock absorption capacity can reach up to 17.2J and the antifouling level reaches level 5;

[0154] Under heat and corrosion resistant conditions, the minimum wear resistance can reach 0.9 × 10⁻⁶. mm / Nm, Charpy impact absorption energy can reach up to 16.8 and the stain resistance level reaches level 5; the wear resistance, impact resistance and stain resistance can be improved in a coordinated manner, and the product has excellent performance stability under heat and corrosion resistance conditions.

[0155] As can be seen from Comparative Examples 1-11 and Example 3, the performance of the products deteriorated significantly when neither modified boron nitride powder nor carbon nanotube-based additives were added. The products showed the most significant performance improvement when modified boron nitride powder and carbon nanotube-based additives were blended and synergistically combined.

[0156] In the preparation of modified boron nitride powder, if no modifying liquid is added, and if graphene and potassium titanate whiskers are not added to the modifying liquid, the performance of the product tends to deteriorate. The modified liquid obtained by the specific method of this invention has the most significant performance effect.

[0157] In the preparation of the carbon nanotube-doped additive, no carbon nanotube-doped modification liquid was added; in the preparation of the carbon nanotube-doped modification liquid, no doping liquid was added; no nano-cobalt powder or lanthanum oxide was added to the doping liquid; in the preparation of the carbon nanotube-doped additive, no additive material was added; no sintered body was added to the additive material; no nano-Si powder or nano-Y powder was added to the sintered body; and no magnesium oxide liquid was added to the additive material. The performance of the products all showed a trend of deterioration to varying degrees.

[0158] Meanwhile, in the preparation of carbon nanotube-doped additives, the performance of products with modified liquids and additives without carbon nanotube doping is significantly worse; and the performance of products with doped liquids and additives obtained by the specific method and process of this invention is the most significant, and the effect of other process methods is not as obvious as that of this invention.

[0159] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

[0160] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A marine remanufacturing nanorepair material, characterized in that, The nanorepair material comprises the following raw materials in parts by weight: 30-35 parts of nanometer tungsten carbide, 25-30 parts of nanometer titanium carbide, 25-30 parts of nanometer silicon carbide, 10-15 parts of modified boron nitride powder, 6-9 parts of a bonding agent based on carbon nanotube doping; The preparation method of the modified boron nitride powder is as follows: S1: uniformly stir the boron nitride in a sufficient amount of a 5-8% mass fraction potassium permanganate solution, then wash with water, filter and dry; The dried boron nitride is then heat treated at 210-230°C for 1-2 hours, then cooled to 60-65°C at a rate of 2-5°C / min, and kept at the temperature to obtain pretreated boron nitride; S2: stir and modify the pretreated boron nitride and the modifying solution according to a weight ratio of 3:(5-7), at a stirring speed of 350-400 r / min for 1-2 hours, then filter and dry to obtain the modified boron nitride powder; The preparation method of the bonding agent based on carbon nanotube doping is as follows: S01: uniformly disperse the carbon nanotubes in 11-15 times the weight of water, then add 10-15% of the total weight of the carbon nanotubes of silane coupling agent KH550, stir uniformly, then filter and dry to obtain silane-modified carbon nanotubes; S02: uniformly blend 3-5 parts by weight of nanometer cobalt powder, 2-3 parts by weight of lanthanum oxide, 1-2 parts by weight of barium nitrate solution and 5-8 parts by weight of sodium dodecylbenzenesulfonate solution to obtain a doping solution; S03: prepare the bonding agent; S04: blend and ball mill the carbon nanotube-doped modifying solution and the bonding agent according to a weight ratio of (7-9):5, at a ball milling speed of 1000-1500 r / min for 1-2 hours, then filter and dry to obtain the bonding agent based on carbon nanotube doping; The preparation method of the bonding agent is as follows: S03a: blend and sinter nanometer Si powder, nanometer Y powder and Ta powder according to a weight ratio of (4-5):(2-3):1 for 1-1.5 hours, at a sintering temperature of 210-220°C, then obtain a sintered body; S03b: place the magnesium oxide in a urea solution of 5-8 times the total amount of the magnesium oxide, then add a nanometer silicon sol of 5-8% of the total amount of the magnesium oxide, stir uniformly, and obtain a magnesium oxide solution; S03c: stir the sintered body and the magnesium oxide solution according to a weight ratio of 4:(5-7), and finally filter and dry to obtain the bonding agent. The particle size of the nanometer tungsten carbide is 10-15 nm; the particle size of the nanometer titanium carbide is 8-12 nm; and the particle size of the nanometer silicon carbide is 5-8 nm.

2. The ship remanufacturing nanorepair material according to claim 1, characterized in that, The preparation method of the modifying solution is as follows: uniformly blend 3-5 parts by weight of graphene, 2-4 parts by weight of potassium titanate whiskers, 1-2 parts by weight of zirconium oxide and 5-8 parts of a 4-6% mass fraction sodium citrate solution to obtain the modifying solution.

3. The ship remanufacturing nanorepairing material according to claim 1, characterized in that, The mass fraction of the barium nitrate solution is 2-5%; and the mass fraction of the sodium dodecylbenzenesulfonate solution is 5-8%.

4. The ship remanufacturing nanorepairing material according to claim 1, characterized in that, The mass fraction of the urea solution is 2-5%.

5. The ship remanufacturing nanorepairing material according to claim 1, characterized in that, The method comprises the following steps:

6. The method of claim 1-5, wherein the method further comprises the step of: ​ ​ According to the weight parts, the raw materials are weighed, wet ball-milled, dried, and obtained as the repairing material, which is deposited on the position to be repaired by the laser deposition technology, and the laser power of the laser deposition technology is 800-900 W and the scanning speed is 4-6 mm / s.

7. The application of the ship remanufacturing nanorepairing material in ship repairing according to any one of claims 1-5.

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