Acid mist-resistant electrostatic spraying anti-rust oil composition as well as preparation method and application thereof

Abstract

The invention discloses an anti-acid mist type electrostatic spraying anti-rust oil composition and a preparation method and application thereof, and the anti-acid mist type electrostatic spraying anti-rust oil composition comprises the following components in parts by weight: 75-90 parts of base oil; 5-20 parts of an oil soluble antirust agent; 0.1 to 5 parts of a film-forming auxiliary agent; wherein the base oil is selected from at least one of base oil I or base oil II; the oil-soluble antirust agent is selected from at least one of barium sulfonate, sodium sulfonate, calcium sulfonate, magnesium sulfonate and amine salt. The anti-acid mist type electrostatic spraying anti-rust oil composition product provided by the invention has the advantages that the raw materials are easily available, the production process is simple, the salt mist performance and the anti-acid mist performance are both considered, and an anti-acid mist corrosion performance test shows that the anti-acid mist time is not less than 3 hours, and the maximum anti-acid mist time is 5 hours.

Description

Technical Field

[0001] The invention relates to an acid mist-resistant electrostatic spraying anti-rust oil composition and a preparation method and application thereof, belonging to the technical field of electrostatic spraying anti-rust oil. Background Art

[0002] Electrostatic oiling machine is a device that uses high-voltage static electricity to evenly spray anti-rust oil or other process media on the surface of plates and strips. Electrostatic spray anti-rust oil is a general term for a type of anti-rust oil used in electrostatic oiling machines. It is mainly suitable for the oiling and rust prevention of cold-rolled thin plates, galvanized plates, pickled plates and other plates by high-voltage electrostatic oiling machines in the metallurgical industry. The composition and use of electrostatic spray anti-rust oil products are also different. Some are suitable for cold-rolled plates, some are suitable for pickled plates, some are suitable for galvanized plates, some are suitable for silicon steel plates, and there are also special acid mist-resistant anti-rust oils that can be used in acid mist environments.

[0003] The Chinese invention patent application publication CN110283641A discloses an electrostatic spray antirust oil for cold-rolled steel plates and its preparation and performance testing method, wherein the electrostatic spray antirust oil for cold-rolled steel plates includes the following components in parts by weight: 70-90 parts of base oil; 5-20 parts of rust inhibitor; 0.5-10 parts of film former; 0.5-5 parts of cosolvent; 0.1-2 parts of antioxidant; all components totaling 100 parts. The main performance is salt spray resistance and moisture and heat resistance, and no mention is made of acid mist resistance.

[0004] The Chinese invention patent application publication CN113088367A discloses an insulating electrostatic spraying antirust oil and a preparation method thereof, which is composed of insulating transformer oil, oil-soluble atomization performance improver, anti-wear lubricant, defoamer, preservative, bactericide, rust inhibitor and antioxidant. The invention also provides a preparation method of the insulating electrostatic spraying antirust oil. The invention has higher breakdown voltage resistance, excellent atomization performance, excellent high and low temperature resistance, uniform oiling performance, rust prevention performance and degreasing performance, but does not mention acid mist resistance.

[0005] The Chinese invention patent application publication CN109321339A discloses a pickling plate antirust oil and its preparation method. The electrostatic spray antirust oil is composed of the following components by weight: 2-8 parts of octadecylamine oxirane; 6-12 parts of oleylamine; 2-8 parts of oxidized petroleum hydrocarbon wax methyl ester barium salt; 1-4 parts of hexadecene succinate; 0.2-0.8 parts of antioxidant; 70-90 parts of hydrorefined mineral oil. The mixing temperature of the antirust oil changes too much during production, from 130-150℃ to 55-70℃, with high operating requirements, high energy consumption, limited production, and poor salt spray test of the antirust performance of the finished product, and average acid spray resistance.

[0006] The Chinese invention patent application publication CN110982589A discloses an anti-corrosion oil and its preparation method, which can protect metals from corrosion in extreme environments such as sulfuric acid, hydrochloric acid, and organic acids. The composition is calculated by weight: 70% base oil, 10% rust inhibitor, 10% corrosion inhibitor, 5% preservative, and 5% emulsifier. The product is an emulsified anti-rust oil, not a pure oil anti-rust oil, with general anti-rust performance. It is mainly used for the protection of the two-pole wiring pieces of lead-acid batteries. The use conditions are not suitable for electrostatic spraying, and the use field and application occasions are limited.

[0007] In summary, the products in the relevant patents and public documents have some related technical problems such as poor product appearance, poor storage stability, complex production process or high energy consumption, no acid mist resistance or poor acid mist resistance. Summary of the invention

[0008] One of the technical problems to be solved by the present invention is the problem of the acid mist resistance of electrostatic spray anti-rust oil in the prior art, and a new electrostatic spray anti-rust oil composition is provided, which has good rust resistance, storage stability and acid mist resistance.

[0009] The complete technical solution provided by the present invention is: an electrostatic spraying anti-rust oil composition, which comprises the following components by weight: 75-90 parts of base oil, 5-20 parts of oil-soluble rust inhibitor, and 0.1-5 parts of film-forming auxiliary agent; wherein the base oil is selected from at least one of Class I or Class II base oils; the oil-soluble sulfonate rust inhibitor is selected from at least one of barium sulfonate, sodium sulfonate, calcium sulfonate, magnesium sulfonate, and amine salt;

[0010] As a preferred technical solution, the film-forming auxiliary agent is selected from at least one of ether auxiliary agents, acid auxiliary agents, ester auxiliary agents or polymer auxiliary agents; the ether auxiliary agent is selected from at least one of fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene ether, and diethylene glycol monobutyl ether; the ester auxiliary agent is selected from at least one of DOP, PETO, S-80, T-80, K-CORRSA-300, 6060E, etc.; the acid auxiliary agent is selected from at least one of alkenyl succinic acid, neodecanoic acid, N-oleoyl sarcosine, imidazole fatty acid, and amide carboxylic acid; the polymer auxiliary agent is selected from at least one of oxidized vaseline, polyethylene oxidized wax, paraffin, ozokerite, microcrystalline wax, and lanolin.

[0011] As a preferred technical solution, the Class I base oil is selected from HVI 75, 150, 350, 400, and 500; the Class II base oil is selected from at least one of HVI II-2, II-4, II-6, and II-8.

[0012] As a preferred technical solution, the calcium sulfonate is selected from petroleum calcium sulfonate or synthetic calcium sulfonate; the synthetic calcium sulfonate is selected from Alox2100 (synthetic calcium sulfonate), Alox2291B (neutral synthetic barium sulfonate), Alox MT21H (synthetic calcium sulfonate), NA-SUL 729 (neutral dinonylnaphthalene calcium sulfonate), NA-SUL CA / W1146 (dinonylnaphthalene calcium sulfonate complex), KX1177 (dinonylnaphthalene calcium sulfonate complex), KX 1183 (dinonylnaphthalene calcium sulfonate), CA-HT3 (dinonylnaphthalene calcium sulfonate calcium carboxylate complex), Lockguard 6941 (natural neutral calcium sulfonate), Lockguard 6942 (synthetic neutral calcium sulfonate), Lockguard 6400 (high base synthetic calcium sulfonate), RN Preferably, the oil-soluble calcium sulfonate rust inhibitor is at least one of ALOX 2100, KX 1183 and CA / W1146.

[0013] As a preferred technical solution, the barium sulfonate is selected from petroleum barium sulfonate or synthetic barium sulfonate; the synthetic barium sulfonate is selected from Alox2291B (neutral barium sulfonate), T705 (basic barium dinonylnaphthalene sulfonate), T705A (neutral barium dinonylnaphthalene sulfonate), T705B (carbonated barium dinonylnaphthalene sulfonate), T701 (alkylbenzene sulfonate barium), LT-855H (barium sulfonate), RP7010 (barium sulfonate), RP3113 (barium sulfonate).

[0014] As a preferred technical solution, the sodium sulfonate is selected from at least one of T702 (sodium petroleum sulfonate), T702A (sodium sulfonate), Lockguard 1960 (high molecular weight sodium sulfonate), Lockguard 2000 (high molecular weight sodium sulfonate), and RN 6619 (sodium sulfonate).

[0015] As a preferred technical solution, the amine salt is selected from at least one of NA-SUL AS (amine salt), N-oleoylsarcosine octadecylamine salt, and imidazoline derivatives.

[0016] As a preferred technical solution, the magnesium sulfonate is selected from at least one of NA-SUL MG, NA-SUL MG-HT, KX 1180, and Lockguard 7960.

[0017] The second technical problem to be solved by the present invention is to provide a method for preparing an electrostatic spray anti-rust oil composition corresponding to the first technical problem to be solved.

[0018] To solve the second technical problem mentioned above, the technical solution adopted by the present invention is as follows: the base oil and the auxiliary agent are mixed, heated, and vacuum dehydrated to obtain the acid mist resistant electrostatic spray anti-rust oil composition; preferably, the heating temperature is 70-80°C; and the mixing time is 2-3 hours.

[0019] Optionally, the heating temperature is 70°C, 75°C, 80°C, or any value between any two of the above points; the mixing time is 2 hours, 2.5 hours, 3 hours, or any value between any two of the above points; the mixing temperature is 70°C, 75°C, 80°C, or any value between any two of the above points.

[0020] A specific implementation plan may be: pumping correctly measured qualified base oil into a blending kettle, heating and stirring; when the oil temperature reaches 70-80°C, adding auxiliary agent, stirring for more than 2.5 hours after adding until the product is transparent and uniform; and then circulating for 2 hours using a high vacuum dehydration filter to obtain the acid mist-resistant electrostatic spray anti-rust oil composition.

[0021] The third technical problem to be solved by the present invention is to provide a use of an electrostatic spraying anti-rust oil composition corresponding to the first technical problem to be solved.

[0022] To solve the third of the above technical problems, the technical solution adopted by the present invention is as follows: the electrostatic spray anti-rust oil composition is used for the sealing and / or protection of steel plates under acid mist atmosphere conditions, especially for the long-term sealing and protection of steel plates in a storage environment where acid mist gas is generated.

[0023] The electrostatic spray anti-rust oil composition product provided by the invention has readily available raw materials, a simple production process, and takes both salt spray performance and acid spray resistance into consideration. A test of the acid spray corrosion resistance shows that the acid spray resistance time is not less than 3 hours and is up to 5 hours. DETAILED DESCRIPTION

[0024] The present invention will be further described below by way of examples.

[0025] The above raw materials in the present invention can be prepared in-house or commercially available, and the present invention is not particularly limited thereto.

[0026] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain this patent in detail and do not limit the scope of protection of the present invention in any way. Unless otherwise defined, the technical terms used in the following embodiments have the same meanings as those generally understood by technicians in the field to which the present invention belongs. The reagents used in the following examples, unless otherwise specified, are all conventional biochemical reagents; the raw materials, instruments and equipment used in the following examples, etc., can all be purchased on the market or can be obtained by existing methods; the reagent dosage, unless otherwise specified, is the reagent dosage in conventional experimental operations; the experimental methods, unless otherwise specified, are all conventional methods.

[0027] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, characteristics and effects of the acid mist-resistant electrostatic spray anti-rust oil composition proposed by the present invention are described in detail below in combination with the preferred embodiments, but it is not intended to limit the scope of the present invention.

[0028] In the present invention:

[0029] The base oil comes from Sinopec refineries;

[0030] ALOX series rust inhibitors are commercially available from Lubrizol Corporation;

[0031] CA / W series rust inhibitors were purchased from King Company;

[0032] RN714, polyethylene oxide wax, and amide carboxylic acid were purchased from Shanghai Yucheng Company;

[0033] Alkenyl succinic acid was purchased from Danyang Mingyu Company;

[0034] S-80, fatty alcohol polyoxyethylene ether, and diethylene glycol monobutyl ether were purchased from Shanghai Tiantan;

[0035] DOP and PETO come from Nanjing Well Company.

[0036] Examples 1-5

[0037] According to the weight proportions in Table 1, the correctly measured qualified base oil is pumped into the blending kettle and heated and stirred; when the oil temperature reaches 75±5°C, the auxiliary agent is added, and after the addition, it is stirred at 75±5°C for more than 2.5 hours until the product is transparent and uniform; and then the high vacuum dehydration filter is used for circulation for 2 hours, and after filtering, the acid mist-resistant electrostatic spray anti-rust oil composition is obtained.

[0038] Table 1 Example formula table

[0039]

[0040] Comparative Example 1

[0041] According to method example 1 disclosed in patent document CN109321339A, the electrostatic spray anti-rust oil is composed of the following components by weight: 2 parts of octadecylamine ethylene oxide; 6 parts of oleylamine; 2 parts of oxidized petroleum hydrocarbon wax methyl ester barium salt; 1 part of hexadecenyl succinate; 0.2 parts of antioxidant; and 70 parts of hydrorefined mineral oil.

[0042] Comparative Example 2

[0043] According to the method example 1 disclosed in patent document CN 103911206A, 80% of No. 15 machine oil, 10% of zinc cyclohexane, 6% of N-oleoylsarcosine octadecylamine, 2% of dodecenylsuccinic acid, and 2% of 2,6-di-tert-butyl-p-cresol are taken by mass percentage, and these raw materials are uniformly mixed to prepare a barium-free and sulfonate-free electrostatic spray anti-rust oil.

[0044] Comparative Example 3

[0045] According to the method example 1 disclosed in patent document CN101486945A, MVI60SN base oil, 3% sodium petroleum sulfonate, 4% barium dinonylnaphthalene petroleum sulfonate, 3% zinc cyclohexaneate, 2% dodecenylsuccinic acid, 2% heptadecenyl imidazoline alkenyl succinate, 0.5% nonylphenol polyoxyethylene (4) ether, 1% sorbitan oleate, 3% rapeseed oil, and 0.3% T501 are taken by mass percentage, mixed, heated to 95-150° C., and stirred at constant temperature for 1-10 hours to prepare an electrostatic spray antirust oil.

[0046] Comparative Example 4

[0047] According to method example 8 disclosed in patent document CN115305133A, HVI II-2 base oil, dodecylbenzene base oil, 8% synthetic calcium sulfonate, 7% mixture of calcium dinonylnaphthalene sulfonate and calcium carboxylate, 4% dioctyl oxalate, 6% isooctyl palmitate, 1.5% dodecenyl succinate, and 0.5% T501 are taken by mass percentage, mixed, heated to 65-75°C, stirred at constant temperature for 3-4h, cooled and filtered, and a lubricating electrostatic spray anti-rust oil is prepared.

[0048] Comparative Example 5

[0049] According to the method example 1 disclosed in patent document CN112342072A, HVI 150 base oil, dodecylbenzene base oil, PAO5 base oil, 12% of medium base value petroleum calcium sulfonate, 2% of PEG-60 hydrogenated castor oil, 2% of thixocal2000 / 2000A, 2% of bisphenol F type epoxy resin, and 1% of dodecenylsuccinic acid are taken by mass percentage, these raw materials are mixed, heated to 70-80°C, stirred at a constant temperature of 60-70°C at a high speed for 3-4h, cooled and filtered, and a thixotropic electrostatic spray anti-rust oil is prepared.

[0050] Comparative Example 6

[0051] According to the method example 7 disclosed in patent document CN111607454A, HVI 150 base oil, synthetic alkylbenzene base oil, 4% lanolin, 1% ethylene-propylene copolymer, 0.5% polyisobutylene, 0.5% isopropanol, 1.5% emulsified silicone oil, 1% glycerol, 1% sulphurized olefin cottonseed oil, 1 part of xylitol sulphurized grease, 0.5 part of diphenol propane, 0.5 part of sulphurized zinc carbamate, 1 part of boronated oleamide, and 0.5 part of thiophosphorus butyl octyl zinc salt are mixed by mass percentage, stirred at a constant temperature of 50°C for 3h, cooled and filtered, and then the guide rail anti-rust oil is prepared.

[0052] Comparative Example 7

[0053] According to the method example 1 disclosed in patent document CN107312590A, 550 parts of paraffin base oil, 400 parts of trimethylolpropane oleate, 300 parts of petroleum barium sulfonate, 20 parts of fatty alcohol polyoxyethylene ether-9, 50 parts of sulfonated olefin cottonseed oil, 20 parts of polyisobutylene, and 5 parts of antioxidant T501 are mixed by mass, stirred at 45-70°C for 1-1.5h to prepare a smooth anti-rust oil.

[0054] Test Case

[0055] Acid mist resistance test method: prepare a standard test piece according to the standard of SH / T 0218, then coat the anti-rust oil sample prepared in the embodiment and comparative example on the standard test piece, place the test piece in an acid mist test device, prepare a hydrochloric acid solution with 180ml of deionized water and 20ml of hydrochloric acid (mass fraction 38%, analytical grade), put it in the bottom of the acid mist device, and test it in an oven at a temperature of 49℃41℃ under closed conditions. Evaluate the acid mist corrosion resistance according to the discoloration and rust of the test piece at different times. According to the test, the longer the time, the better the acid mist resistance.

[0056] Table 2 Test results of the embodiments and comparative examples

[0057]

[0058] The data results in Table 2 show that the examples of the present invention can pass the acid mist resistance test for more than 2 hours, and have good acid mist resistance performance, while the acid mist resistance performance of the comparative examples is not ideal and cannot pass the test for half an hour.

Claims

1. The electrostatic spray anti-rust oil composition comprises the following components in parts by weight: Base oil, 75-90 parts; Oil-soluble rust inhibitor, 5-20 parts; Film-forming auxiliary agent, 0.1 to 5 parts; in, The base oil is selected from at least one of Group I or Group II base oils; The oil-soluble rust inhibitor is selected from at least one of barium sulfonate, sodium sulfonate, calcium sulfonate, magnesium sulfonate and amine salt.

2. The electrostatic spraying anti-rust oil composition according to claim 1, characterized in that: The film-forming auxiliary agent is selected from at least one of an ether auxiliary agent, an acid auxiliary agent, an ester auxiliary agent or a polymer auxiliary agent; The ether auxiliary agent is selected from at least one of fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene ether, and diethylene glycol monobutyl ether; The ester auxiliary agent is selected from at least one of DOP, PETO, S-80, T-80, K-CORR SA-300, 6060E, etc. The acid adjuvant is selected from at least one of alkenyl succinic acid, neodecanoic acid, N-oleoyl sarcosine, imidazole fatty acid, and amide carboxylic acid; The polymer auxiliary agent is selected from at least one of oxidized vaseline, polyethylene oxidized wax, paraffin, ozokerite, microcrystalline wax and lanolin.

3. The electrostatic spraying anti-rust oil composition according to claim 1, characterized in that: The Class I base oil is selected from HVI 75, 150, 350, 400, 500; The Group II base oil is selected from at least one of HVI II-2, II-4, II-6, and II-8.

4. The electrostatic spraying anti-rust oil composition according to claim 1, characterized in that: The calcium sulfonate is selected from petroleum calcium sulfonate or synthetic calcium sulfonate; the synthetic calcium sulfonate is selected from at least one of Alox2100, Alox MT21H, NA-SUL 729, NA-SUL CA / W1146, KX 1177, KX 1183, CA-HT3, Lockguard 6941, Lockguard 6942, Lockguard 6400, RN714, CA25, NA-SUL CA-1089, Additin RC4210, and Additin RC4220.

5. The electrostatic spraying anti-rust oil composition according to claim 1, characterized in that: The barium sulfonate is selected from petroleum barium sulfonate or synthetic barium sulfonate; the synthetic barium sulfonate is selected from at least one of Alox2291B, T705, T705A, T705B, T701, LT-855H, RP7010, and RP3113.

6. The electrostatic spray anti-rust oil composition according to claim 1, characterized in that: The sodium sulfonate is selected from at least one of T702, T702A, Lockguard 1960, Lockguard 2000, and RN 6619.

7. The electrostatic spray anti-rust oil composition according to claim 1, characterized in that: The amine salt is selected from at least one of NA-SULAS, N-oleoylsarcosine octadecylamine salt, and imidazoline derivatives.

8. The electrostatic spraying anti-rust oil composition according to claim 1, characterized in that: The magnesium sulfonate is selected from at least one of NA-SULMG, NA-SUL MG-HT, KX 1180, and Lockguard 7960.

9. A method for preparing the electrostatic spray antirust oil composition according to any one of claims 1 to 8, comprising: The base oil and the auxiliary agent are mixed, heated, and vacuum-dehydrated to obtain the acid mist-resistant electrostatic spray anti-rust oil composition; Preferably, the heating temperature is 70-80° C. and the mixing time is 2-3 hours.

10. Use of the electrostatic spray anti-rust oil composition according to any one of claims 1 to 8 or the electrostatic spray anti-rust oil composition obtained by the preparation method according to claim 9; preferably used for sealing and / or protecting steel plates under acid mist atmosphere conditions.

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