Marine transportation anti-rust oil composition and preparation method thereof

Abstract

The invention discloses an anti-rust oil composition for marine transportation. The anti-rust oil composition comprises the following components in parts by weight: 70-90 parts of base oil, 1-10 parts of perfluoropolyether, 5-15 parts of a sulfonate type anti-rust agent, 1-5 parts of an auxiliary anti-rust agent, 0.1-1 part of an antioxidant, 1-20 parts of a thixotropic agent and 1-5 parts of a film-forming agent. The preparation method specifically comprises the following steps: heating and stirring the base oil, adding the film-forming agent, stirring, sequentially adding the perfluoropolyether, the thixotropic agent, the antirust agent, the auxiliary antirust agent and the antioxidant, stirring, and filtering. The composition disclosed by the invention has extremely strong salt spray medium corrosion resistance and can meet the antirust requirement of ultra-long-time marine transportation, and the salt spray resistance of the antirust oil is improved by adding perfluoropolyether as an antirust agent.

Description

Technical Field

[0001] The invention belongs to the technical field of rust-proof oil preparation, and in particular relates to a marine rust-proof oil composition, and also relates to a preparation method of the marine rust-proof oil composition. Background Art

[0002] Metal products are susceptible to corrosion from oxygen, moisture and other chemicals during storage, transportation and use. The shipping cycle can be as long as 30 days. During the long-term ocean transportation of large steel products, the temperature and humidity in the cabin are high, and the seawater contains salt, so the rust prevention problem is particularly prominent. The use of high-quality, high-performance anti-rust oil is an effective way to prevent rust on products that are transported by ocean for a long time. However, traditional anti-rust oil is easily affected by water and becomes ineffective during ocean transportation.

[0003] A Chinese patent (application number: 202011262515.0, publication number: CN112342072A) discloses an environmentally friendly rust-proof oil composition, preparation method and use, which is composed of the following components by weight: 70-89 parts of base oil; 10-20 parts of oil-soluble sulfonate rust inhibitor; 0.5-5 parts of thixotropic agent; 0.1-5 parts of auxiliary agent; it mainly solves the technical problems in the prior art that the rust-proof oil film is easy to flow when applied on the vertical surface of parts and that the traditional rust-proof oil contains heavy metal barium salts and is not friendly to the natural environment. It can be used in occasions where there are restrictions on the use of barium salt rust inhibitors or in the application of curing rust-proof oil to inhibit flowing.

[0004] The Chinese patent (application number: 201910958521.0, publication number: CN112646641A) discloses an electrostatic spray anti-rust oil composition, preparation method and use thereof, which is composed of the following components by weight: 70-90 parts of base oil; 2-8 parts of thixotropic agent; 5-15 parts of barium-free rust inhibitor; 0.2-1 parts of antioxidant; 1-10 parts of auxiliary agent; mainly solves the technical problem of poor thixotropic performance of thixotropic electrostatic spray anti-rust oil composition in the prior art. It is suitable for application in electrostatic spray anti-rust treatment of cold-rolled steel plates.

[0005] Chinese patent (application number: 201310362684.5, publication number: CN103484198A) discloses an environmentally friendly rust-proof oil, which is composed of the following components by weight: 5-6 parts of lanolin magnesium soap, 2-3 parts of hydrogenated castor oil, 2-4 parts of anhydrous sorbitan fatty acid ester, 1-2 parts of 4,4-dioctyl diphenylamine, 0.2-0.4 parts of β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid n-octadecyl alcohol ester, 2-3 parts of film-forming aid, 50-60 parts of 25# transformer oil, and 20-30 parts of 50# machine oil. The rust-proof oil of the present invention is safe and environmentally friendly, has strong water resistance and salt spray resistance, has good thixotropy, can form a stable coating on the surface of a metal workpiece, reduces flow, and saves oil.

[0006] A Chinese patent (application number: 201410544836.8, publication number: CN104312699B) discloses an environmentally friendly rust-proof oil and a preparation method thereof, which is composed of the following components by weight: 5 to 10 parts of a barium-free rust inhibitor, 1 to 4 parts of a thixotropic agent, 0.2 to 0.5 parts of a phenol-based antioxidant, 0.1 to 0.5 parts of an aniline-based antioxidant, 0.2 to 1 parts of an olefinic acid antioxidant, 2 to 3 parts of a film-forming aid, 57 to 65 parts of a paraffin-based base oil, 9 to 16 parts of a cycloalkyl base oil, and 6 to 11 parts of an alkyl high-boiling point base oil. The invention does not contain harmful barium salt decomposition substances and is environmentally friendly; the product can quickly form a stable oil film on the vertical surface of the workpiece without flowing, thereby reducing waste; it has excellent high temperature resistance, moisture and heat resistance, excellent high salinity salt spray corrosion resistance, and excellent rust prevention performance; it has good voltage resistance and is convenient for electrostatic spraying; it has good cleaning performance, and the rust prevention oil film can be easily removed by a neutral or alkaline water-based cleaning agent. Summary of the invention

[0007] The purpose of the present invention is to provide a marine anti-rust oil composition, which solves the problem that the existing anti-rust oil composition is easily corroded by seawater when applied on the surface of a workpiece, thereby resulting in poor anti-rust effect.

[0008] Another object of the present invention is to provide a method for preparing the marine antirust oil composition.

[0009] The technical solution adopted by the present invention is that the marine antirust oil composition comprises the following components in parts by weight: 70 to 90 parts of base oil, 1 to 10 parts of perfluoropolyether, 5 to 15 parts of sulfonate type rust inhibitor, 1 to 5 parts of auxiliary rust inhibitor, 0.1 to 1 part of antioxidant, 1 to 20 parts of thixotropic agent and 1 to 5 parts of film-forming agent.

[0010] The present invention is also characterized in that:

[0011] The base oil is any one or both of mineral base oil and synthetic base oil; the mineral base oil is at least one of HVI75, HVI 150, HVI 500, No. 10 transformer oil, No. 20 transformer oil, and No. 40 transformer oil; the synthetic base oil is at least one of polyether, synthetic ester, and PAO.

[0012] The perfluoropolyether is an anionically polymerized perfluoropolyether or a photo-oxidized perfluoropolyether.

[0013] The sulfonate type rust inhibitor is at least one of barium sulfonate, calcium sulfonate, sodium sulfonate and magnesium sulfonate; the barium sulfonate is at least one of petroleum barium sulfonate, neutral dinonylnaphthalene sulfonate and alkaline barium dinonylnaphthalene sulfonate; the calcium sulfonate is at least one of petroleum calcium sulfonate, medium base synthetic calcium sulfonate, neutral dinonylnaphthalene sulfonate and calcium sulfonate carboxylic acid complex.

[0014] The auxiliary rust inhibitor is at least one of dibutyl phthalate, dioctyl phthalate, ethanol, butanol, silicone oil, methyl silicone oil, sorbitan fatty acid ester, benzotriazole, benzotriazole derivatives, imidazoline derivatives, alkenyl succinic acid, alkenyl succinate, and zinc cyclohexane.

[0015] The antioxidant is selected from at least one of phenolic antioxidants, aniline antioxidants and olefinic acid antioxidants.

[0016] The thixotropic agent is selected from at least one of hydrogenated castor oil, fumed silica, modified polyurea, modified calcium sulfonate, organic bentonite, and aluminum distearate.

[0017] The film former is selected from at least one of vaseline, paraffin, oxidized paraffin, oil-soluble asphalt, phenolic resin, rosin, terpene resin, polyolefin resin, ethylene-propylene rubber, aromatic petroleum resin, lanolin, and lanolin soap.

[0018] Another technical solution adopted by the present invention is a method for preparing a marine antirust oil composition, which specifically comprises: heating the base oil at 70°C to 80°C with stirring, adding a film-forming agent, stirring at 60°C to 70°C for 0.2 to 2h, then sequentially adding perfluoropolyether, thixotropic agent, rust inhibitor, auxiliary rust inhibitor and antioxidant, stirring at 50°C to 60°C for 1 to 4 hours, filtering, and obtaining the marine antirust oil composition.

[0019] The beneficial effects of the present invention are as follows: the composition of the present invention has extremely strong salt spray medium corrosion resistance, can meet the requirements of ultra-long-term marine rust prevention, and by adding perfluoropolyether as a rust inhibitor, the salt spray resistance of the rust-proof oil is improved. DETAILED DESCRIPTION

[0020] The present invention is described in detail below in conjunction with specific implementation modes.

[0021] The marine antirust oil composition of the present invention comprises the following components in parts by weight: 70 to 90 parts of base oil, 1 to 10 parts of perfluoropolyether, 5 to 15 parts of sulfonate type antirust agent, 1 to 5 parts of auxiliary antirust agent, 0.1 to 1 part of antioxidant, 1 to 20 parts of thixotropic agent, and 1 to 5 parts of film-forming agent. The composition of the present invention has good seawater erosion resistance and salt spray resistance.

[0022] Preferably, the composition comprises the following components in parts by weight: 75 to 80 parts of base oil, 8 to 15 parts of sulfonate rust inhibitor, 1 to 5 parts of auxiliary rust inhibitor, 0.4 to 0.6 parts of antioxidant, 2 to 15 parts of thixotropic agent, and 2 to 5 parts of film-forming agent.

[0023] The base oil is any one or both of a mineral base oil and a synthetic base oil; preferably, the mineral base oil is at least one of HVI 75, HVI 150, HVI 500, No. 10 transformer oil, No. 20 transformer oil, and No. 40 transformer oil, and the synthetic base oil is at least one of polyether, synthetic ester, and PAO.

[0024] Perfluoropolyether is a commercial anionic polymerized perfluoropolyether (type K and type D) or a photo-oxidized perfluoropolyether (type Y and type Z). Anionic polymerized perfluoropolyether is anionic polymerized perfluoropolyether terminated with cyano, amine or nitrogen-containing heterocyclic ring, and the end-capping group is morpholine, triethanolamine, isobutylamine, N-aminoethylethanolamine. The molecular weight of perfluoropolyether is 1000 to 10000.

[0025] The sulfonate type rust preventive is selected from at least one of sulfonate barium salt, sulfonate calcium salt, sulfonate sodium salt and sulfonate magnesium salt. The sulfonate barium salt is at least one of petroleum barium sulfonate, neutral dinonylnaphthalene barium sulfonate and alkaline dinonylnaphthalene barium sulfonate, and the sulfonate calcium salt is at least one of petroleum calcium sulfonate, medium base synthetic calcium sulfonate, neutral dinonylnaphthalene calcium sulfonate and calcium sulfonate carboxylic acid complex.

[0026] The auxiliary rust inhibitor is at least one of dibutyl phthalate, dioctyl phthalate, ethanol, butanol, silicone oil, methyl silicone oil, sorbitan fatty acid ester, benzotriazole, benzotriazole derivatives, imidazoline derivatives, alkenyl succinic acid, alkenyl succinate, and zinc cyclohexane.

[0027] The antioxidant is selected from at least one of phenolic antioxidants, aniline antioxidants and olefinic acid antioxidants.

[0028] The thixotropic agent is selected from at least one of hydrogenated castor oil, fumed silica, modified polyurea, modified calcium sulfonate, organic bentonite, and aluminum distearate.

[0029] The film former is selected from at least one of vaseline, paraffin, oxidized paraffin, oil-soluble asphalt, phenolic resin, rosin, terpene resin, polyolefin resin, ethylene-propylene rubber, aromatic petroleum resin, lanolin, and lanolin soap.

[0030] The preparation method of the marine antirust oil composition of the present invention specifically comprises: heating and stirring the base oil at 70°C to 80°C, adding a film-forming agent, stirring at high speed for 0.2 to 2h at 60 to 70°C, then sequentially adding perfluoropolyether, a thixotropic agent, a rust inhibitor, an auxiliary rust inhibitor and an antioxidant, stirring at high speed for 1 to 4h at 50°C to 60°C, and filtering through a 10μm bag filter to obtain the marine antirust oil composition.

[0031] Preferably, in high-speed stirring at 60-70°C, the stirring frequency is not less than 500 r / min, and in high-speed stirring at 50-60°C, the stirring frequency is not less than 1000 r / min.

[0032] Example 1

[0033] The marine antirust oil composition of the present invention comprises the following components in parts by weight: 10 parts of HVI 500, 73 parts of No. 10 transformer oil, 10 parts of calcium dinonylnaphthalenesulfonate, 4 parts of morpholine-terminated perfluoropolyether, 1 part of Siben 80, and 2 parts of lanolin;

[0034] Example 2

[0035] The marine antirust oil composition of the present invention comprises the following components in parts by weight: 10 parts of HVI 150, 72 parts of No. 20 transformer oil, 5 parts of barium dinonylnaphthalene sulfonate, 5 parts of calcium dinonylnaphthalene sulfonate, 3 parts of isobutylamine-terminated perfluoropolyether, 1 part of dodecenylsuccinic acid, 0.5 parts of 2,6-di-tert-butyl-p-cresol, and 3.5 parts of oxidized paraffin;

[0036] Example 3

[0037] The marine antirust oil composition of the present invention comprises the following components in parts by weight: 82.5 parts of PAO5, 10 parts of calcium dinonylnaphthalenesulfonate, 4 parts of morpholine-terminated perfluoropolyether, 1 part of Siben 80, 0.5 parts of 2,6-di-tert-butyl-p-cresol, and 2 parts of lanolin;

[0038] Example 4

[0039] The marine antirust oil composition of the present invention comprises the following components in parts by weight: 82.5 parts of HVI 150, 5 parts of barium dinonylnaphthalene sulfonate, 5 parts of calcium dinonylnaphthalene sulfonate, 3 parts of isobutylamine-terminated perfluoropolyether, 1 part of dodecenylsuccinic acid, 0.5 parts of 2,6-di-tert-butyl-p-cresol, and 4 parts of oxidized paraffin;

[0040] Comparative Example 1

[0041] The marine antirust oil composition of the present invention comprises the following components in parts by weight: 10 parts of HVI 500, 77 parts of No. 10 transformer oil, 10 parts of calcium dinonylnaphthalenesulfonate, 1 part of Siben 80, and 2 parts of lanolin;

[0042] Comparative Example 2

[0043] The marine antirust oil composition of the present invention comprises the following components in parts by weight: 10 parts of HVI 150, 75 parts of No. 20 transformer oil, 5 parts of barium dinonylnaphthalenesulfonate, 5 parts of calcium dinonylnaphthalenesulfonate, 1 part of dodecenylsuccinic acid, 0.5 parts of 2,6-di-tert-butyl-p-cresol, and 3.5 parts of oxidized paraffin;

[0044] Comparative Example 3

[0045] The marine antirust oil composition of the present invention comprises the following components in parts by weight: 86.5 parts of PAO5, 10 parts of calcium dinonylnaphthalenesulfonate, 1 part of Siben 80, 0.5 parts of 2,6-di-tert-butyl-p-cresol, and 2 parts of lanolin;

[0046] Comparative Example 4

[0047] The marine antirust oil composition of the present invention comprises the following components in parts by weight: 85.5 parts of HVI 150, 5 parts of barium dinonylnaphthalene sulfonate, 5 parts of calcium dinonylnaphthalene sulfonate, 1 part of dodecenylsuccinic acid, 0.5 parts of 2,6-di-tert-butyl-p-cresol, and 4 parts of oxidized paraffin;

[0048] Table 1 Performance test results of the compositions of the embodiments and comparative examples

[0049] Example Salt spray grade A time (h) Seawater immersion test (h) Example 1 96 1200 Example 2 96 1200 Example 3 120 1400 Example 4 120 1400 Comparative Example 1 72 1000 Comparative Example 2 48 1000 Comparative Example 3 72 1000 Comparative Example 4 72 1000

[0050] Seawater immersion test method: Two oil-coated test pieces are stacked and immersed in artificial seawater with a temperature of 25°C and a sodium chloride concentration of 5% for a simulated corrosion test. The immersion depth is maintained at 150 to 300 mm below the liquid surface.

[0051] As can be seen from Table 1, the anti-salt spray performance and seawater resistance of the rust-proof oil composition to which perfluoropolyether is added (Example) are significantly better than those of the rust-proof oil to which no perfluoropolyether is added (Comparative Example).

Claims

1. A marine anti-rust oil composition, characterized in that: The invention comprises the following components in parts by weight: 70 to 90 parts of base oil, 1 to 10 parts of perfluoropolyether, 5 to 15 parts of sulfonate type rust inhibitor, 1 to 5 parts of auxiliary rust inhibitor, 0.1 to 1 part of antioxidant, 1 to 20 parts of thixotropic agent and 1 to 5 parts of film-forming agent.

2. The marine anti-rust oil composition according to claim 1, characterized in that The base oil is any one or both of mineral base oil and synthetic base oil; the mineral base oil is at least one of HVI 75, HVI 150, HVI 500, No. 10 transformer oil, No. 20 transformer oil, and No. 40 transformer oil; the synthetic base oil is at least one of polyether, synthetic ester, and PAO.

3. The marine antirust oil composition according to claim 1, characterized in that The perfluoropolyether is an anionic polymerized perfluoropolyether or a photo-oxidized perfluoropolyether.

4. The marine anti-rust oil composition according to claim 1, characterized in that The sulfonate type rust inhibitor is at least one of barium sulfonate, calcium sulfonate, sodium sulfonate and magnesium sulfonate; the barium sulfonate is at least one of petroleum barium sulfonate, neutral dinonylnaphthalene barium sulfonate and alkaline dinonylnaphthalene barium sulfonate; the calcium sulfonate is at least one of petroleum calcium sulfonate, medium base synthetic calcium sulfonate, neutral dinonylnaphthalene calcium sulfonate and calcium sulfonate carboxylic acid complex.

5. The marine anti-rust oil composition according to claim 1, characterized in that The auxiliary rust inhibitor is at least one of dibutyl phthalate, dioctyl phthalate, ethanol, butanol, silicone oil, methyl silicone oil, sorbitan fatty acid ester, benzotriazole, benzotriazole derivatives, imidazoline derivatives, alkenyl succinic acid, alkenyl succinate, and zinc cyclohexane.

6. The marine antirust oil composition according to claim 1, characterized in that The antioxidant is selected from at least one of phenolic antioxidants, aniline antioxidants and olefinic acid antioxidants.

7. The marine antirust oil composition according to claim 1, characterized in that The thixotropic agent is selected from at least one of hydrogenated castor oil, fumed silica, modified polyurea, modified calcium sulfonate, organic bentonite, and aluminum distearate.

8. The marine anti-rust oil composition according to claim 1, characterized in that The film former is selected from at least one of vaseline, paraffin, oxidized paraffin, oil-soluble asphalt, phenolic resin, rosin, terpene resin, polyolefin resin, ethylene-propylene rubber, aromatic petroleum resin, lanolin, and lanolin soap.

9. The method for preparing the marine antirust oil composition according to claim 1, characterized in that: Specifically, the base oil is heated and stirred at 70°C to 80°C, a film-forming agent is added, and the mixture is stirred at 60°C to 70°C for 0.2 to 2h, and then perfluoropolyether, thixotropic agent, rust inhibitor, auxiliary rust inhibitor and antioxidant are added in sequence, and the mixture is stirred at 50°C to 60°C for 1 to 4h, and filtered to obtain a marine antirust oil composition.

10. The method for preparing the marine antirust oil composition according to claim 9, characterized in that: When stirring at 60-70°C, the stirring frequency is not less than 500 r / min, and when stirring at 50-60°C, the stirring frequency is not less than 1000 r / min.