An anti-acid mist type electrostatic spraying rust-proof oil composition, a preparation method and application thereof

Abstract

The application discloses an anti-acid-mist electrostatic spraying antirust oil composition, a preparation method and application thereof, and the anti-acid-mist electrostatic spraying antirust oil composition comprises the following components in parts by weight: base oil 75-90 parts; oil-soluble antirust agent 5-20 parts; film-forming auxiliary agent 0.1-5 parts; wherein the base oil is selected from at least one of I or II base oil; 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 electrostatic spraying antirust oil composition provided by the application has the advantages of easy-to-obtain raw materials, simple production process, and the combination of salt fog performance and anti-acid-mist performance; the anti-acid-mist corrosion resistance performance test shows that the anti-acid-mist time is not less than 3 hours, and the highest anti-acid-mist time is up to 5 hours.

Description

Technical Field

[0001] This invention relates to an acid mist resistant electrostatic spraying rust-preventive oil composition, its preparation method, and its application, belonging to the technical field of electrostatic spraying rust-preventive oil. Background Technology

[0002] An electrostatic oiling machine is a device that uses high-voltage static electricity to evenly spray rust-preventive oil or other process media onto the surface of sheet and strip materials. Electrostatic spray rust-preventive oil is a general term for a type of rust-preventive oil used on electrostatic oiling machines, mainly suitable for applying oil to cold-rolled thin plates, galvanized plates, pickled plates, and other sheet materials using high-voltage electrostatic oiling machines in the metallurgical industry. The composition and uses of electrostatic spray rust-preventive oil products vary; some are suitable for cold-rolled plates, some for pickled plates, some for galvanized plates, some for silicon steel plates, and there are also special acid-mist-resistant rust-preventive oils that can be used in acid mist environments.

[0003] Chinese invention patent application publication CN110283641A discloses an electrostatic spraying rust-preventive oil for cold-rolled steel sheets, its preparation method, and performance testing method. The electrostatic spraying rust-preventive oil for cold-rolled steel sheets comprises the following components in parts by weight: 70-90 parts base oil; 5-20 parts rust inhibitor; 0.5-10 parts film-forming agent; 0.5-5 parts co-solvent; and 0.1-2 parts antioxidant; totaling 100 parts. Its main properties are salt spray resistance and damp heat resistance; acid spray resistance is not mentioned.

[0004] Chinese invention patent application publication CN113088367A discloses an insulating electrostatic spray rust-preventive oil and its preparation method, comprising insulating transformer oil, an oil-soluble atomization performance improver, an anti-wear lubricant, a defoamer, a corrosion inhibitor, a bactericide, a rust inhibitor, and an antioxidant. This invention also provides a method for preparing the aforementioned insulating electrostatic spray rust-preventive oil. This invention exhibits high breakdown voltage resistance, excellent atomization performance, excellent high and low temperature resistance, uniform coating performance, rust prevention performance, and degreasing performance, but does not mention acid mist resistance.

[0005] Chinese invention patent application publication CN109321339A discloses a pickling-resistant steel plate rust-preventive oil and its preparation method. The electrostatic spraying rust-preventive oil is composed of the following components by weight: 2-8 parts of octadecylamine ethylene oxide; 6-12 parts of oleylamine; 2-8 parts of barium methyl ester of petroleum hydrocarbon oxide; 1-4 parts of hexadecenyl succinate; 0.2-0.8 parts of antioxidant; and 70-90 parts of hydrotreated mineral oil. However, the mixing temperature of this rust-preventive oil varies too much during production, from 130-150℃ to 55-70℃, requiring high operational skills, resulting in high energy consumption and limiting production. Furthermore, the finished product exhibits poor rust-preventive performance in salt spray tests and only moderate acid spray resistance.

[0006] Chinese invention patent application publication CN110982589A discloses an anti-corrosion oil and its preparation method. This anti-corrosion oil can protect metals from corrosion in extreme environments such as sulfuric acid, hydrochloric acid, and organic acids. Its composition, by weight, is as follows: 70% base oil, 10% rust inhibitor, 10% corrosion inhibitor, 5% corrosion inhibitor, and 5% emulsifier. This product is an emulsified rust-preventive oil, not a pure oil-based rust-preventive oil, and its rust-preventive performance is generally limited. It is mainly used for the protection of the terminals of lead-acid batteries, and its application conditions are not suitable for electrostatic spraying, thus limiting its application areas and occasions.

[0007] In summary, the products in the relevant patents and published documents all have some technical problems, such as poor product appearance, poor storage stability, complex or high energy consumption in production processes, and lack of 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 acid mist resistance of electrostatic spraying rust-preventive oil in the prior art. The present invention provides a new electrostatic spraying rust-preventive oil composition, which has good rust prevention, storage stability and acid mist resistance.

[0009] The complete technical solution provided by this invention is as follows: an electrostatic spraying rust-preventive oil composition, comprising 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 aid; wherein the base oil is selected from at least one of Group I or Group II base oils; and the oil-soluble sulfonate rust inhibitor is selected from at least one of barium sulfonate, sodium sulfonate, calcium sulfonate, magnesium sulfonate, and amine salt. As a preferred technical solution, the film-forming aid is selected from at least one of ether aids, acid aids, ester aids, or polymeric aids; the ether aid is selected from at least one of fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene ether, and diethylene glycol monobutyl ether; the ester aid is selected from at least one of DOP, PETO, S-80, T-80, K-CORRSA-300, and 6060E; the acid aid is selected from at least one of alkenyl succinic acid, neodecanoic acid, N-oleoylsarcosinate, imidazole fatty acid, and amide carboxylic acid; and the polymeric aid is selected from at least one of oxidized petrolatum, polyethylene oxide wax, paraffin wax, ceresin wax, microcrystalline wax, and lanolin.

[0010] As a preferred technical solution, the Group I base oil is selected from HVI 75, 150, 350, 400, and 500; the Group II base oil is selected from at least one of HVI II-2, II-4, II-6, and II-8.

[0011] 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 sulfonate calcium), NA-SUL CA / W1146 (dinonylnaphthalene sulfonate calcium salt complex), KX1177 (dinonylnaphthalene sulfonate calcium salt complex), KX 1183 (dinonylnaphthalene sulfonate calcium), CA-HT3 (dinonylnaphthalene sulfonate calcium carboxylate complex), Lockguard 6941 (natural neutral calcium sulfonate), Lockguard 6942 (synthetic neutral calcium sulfonate), Lockguard 6400 (high-alkalinity synthetic calcium sulfonate), RN At least one of 714 (neutral calcium sulfonate), CA25 (neutral calcium sulfonate), NA-SULCA-1089 (calcium dinonylnaphthalene sulfonate calcium carboxylate complex), Additin RC4210 (calcium sulfonate calcium carboxylate complex), and Additin RC4220 (neutral dialkylbenzene sulfonate calcium). More preferably, the oil-soluble calcium sulfonate rust inhibitor is selected from at least one of Alox2100, KX 1183, and CA / W1146.

[0012] 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 dinonylnaphthalene sulfonate), T705A (neutral dinonylnaphthalene sulfonate), T705B (carbonated dinonylnaphthalene sulfonate), T701 (alkylbenzene sulfonate), LT-855H (barium sulfonate), RP7010 (barium sulfonate), and RP3113 (barium sulfonate).

[0013] As a preferred technical solution, the sodium sulfonate is selected from at least one of T702 (petroleum sodium sulfonate), T702A (sodium sulfonate), Lockguard 1960 (high molecular weight sodium sulfonate), Lockguard 2000 (high molecular weight sodium sulfonate), and RN 6619 (sodium sulfonate).

[0014] As a preferred technical solution, the amine salt is selected from at least one of NA-SUL AS (amine salt), N-oleoylsarcosinate octadecylamine salt, and imidazoline derivatives.

[0015] 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.

[0016] The second technical problem to be solved by the present invention is to provide a method for preparing an electrostatic spraying rust-preventive oil composition, which corresponds to solving the first technical problem.

[0017] To solve the second technical problem mentioned above, the present invention adopts the following technical solution: the base oil and auxiliary agent are mixed, heated, and vacuum dehydrated to obtain the acid mist-resistant electrostatic spraying rust-preventive oil composition; preferably, the heating temperature is 70-80°C; and the mixing time is 2-3 hours.

[0018] Optionally, the heating temperature is 70℃, 75℃, 80℃, or any value between any two of the above; the mixing time is 2 hours, 2.5 hours, 3 hours, or any value between any two of the above; and the mixing temperature is 70℃, 75℃, 80℃, or any value between any two of the above.

[0019] A specific implementation plan may be as follows: pump the correctly measured qualified base oil into the mixing kettle, heat and stir; when the oil temperature reaches 70-80℃, add the auxiliary agent, and stir for more than 2.5 hours until the product is transparent and uniform; then circulate it for 2 hours using a high vacuum dehydration filter to obtain the acid mist-resistant electrostatic spraying rust-preventive oil composition.

[0020] The third technical problem to be solved by the present invention is to provide an application of an electrostatic spraying rust-preventive oil composition that corresponds to solving one of the technical problems.

[0021] To solve the third technical problem mentioned above, the present invention adopts the following technical solution: the electrostatic spraying rust-preventive 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 storage environments where acid mist gas is generated.

[0022] The electrostatic spraying rust-preventive oil composition provided by this invention uses readily available raw materials, has a simple production process, and combines salt spray resistance and acid spray resistance. The acid spray corrosion resistance test shows that the acid spray resistance time is not less than 3 hours and up to 5 hours. Detailed Implementation

[0023] The present invention will be further illustrated below through examples.

[0024] All of the above-mentioned raw materials used in this invention can be prepared in-house or purchased commercially; this invention does not impose any particular limitations on them.

[0025] To make the technical problems, technical solutions, and beneficial effects of this invention clearer, the invention will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are merely for illustrating this patent and do not limit the scope of protection of this invention in any way. Unless otherwise defined, the technical terms used in the following embodiments have the same meaning as commonly understood by those skilled in the art. Unless otherwise specified, the reagents used in the following embodiments are conventional biochemical reagents; the raw materials, instruments, and equipment used in the following embodiments can all be obtained through commercial purchase or by existing methods; the reagent dosages, unless otherwise specified, are the dosages used in conventional experimental operations; and the experimental methods, unless otherwise specified, are conventional methods.

[0026] To further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose, the following detailed description of the specific implementation, features and effects of the anti-acid mist electrostatic spraying rust-preventive oil composition proposed according to the present invention, in conjunction with preferred embodiments, is provided but is not intended to limit the scope of the present invention.

[0027] In this invention: The base oil was sourced from Sinopec refineries; ALOX series rust inhibitors are purchased from Lubrizol Corporation; CA / W series rust inhibitors were purchased from King Company; RN714, polyethylene oxide wax, and amide carboxylic acid were purchased from Shanghai Yucheng Company. Alkenyl succinic acid was purchased from Danyang Mingyu Company; S-80, fatty alcohol polyoxyethylene ether, and diethylene glycol monobutyl ether were purchased from Shanghai Tiantan. DOP and PETO are from Nanjing Well Company.

[0028] Examples 1-5 According to the weight proportions in Table 1, the correctly measured qualified base oil is pumped into the mixing kettle and heated and stirred. When the oil temperature reaches 75±5℃, the auxiliary agent is added. After the addition is complete, the mixture is stirred at 75±5℃ for more than 2.5 hours until the product is transparent and uniform. Then, it is circulated in a high vacuum dehydration filter for 2 hours. After filtration, the acid mist-resistant electrostatic spraying rust-preventive oil composition is obtained.

[0029] Table 1 Formulation Table of Examples

[0030] Comparative Example 1 According to Example 1 of the method disclosed in patent document CN109321339A, the electrostatic spraying rust-preventive oil is composed of the following components in parts by weight: 2 parts of octadecylamine ethylene oxide; 6 parts of oleylamine; 2 parts of barium salt of petroleum hydrocarbon wax methyl ester; 1 part of hexadecene succinate; 0.2 parts of antioxidant; and 70 parts of hydrogenated refined mineral oil.

[0031] Comparative Example 2 According to Example 1 of the method disclosed in patent document CN 103911206A, 80% of No. 15 machine oil, 10% of zinc naphthenate, 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 mixed evenly to prepare a barium-free and sulfonate-free electrostatic spraying rust-preventive oil.

[0032] Comparative Example 3 According to Example 1 of the method disclosed in patent document CN101486945A, the following ingredients were taken by mass percentage: MVI60SN base oil, sodium petroleum sulfonate 3%, dinonylnaphthalene barium petroleum sulfonate 4%, zinc naphthenate 3%, dodecenyl succinic acid 2%, heptadecanyl imidazoline alkenyl succinate 2%, nonylphenol polyoxyethylene (4) ether 0.5%, sorbitan oleate 1%, rapeseed oil 3%, and T501 0.3%. These ingredients were mixed, heated to 95-150℃, and stirred at a constant temperature for 1-10 hours to prepare electrostatic spraying rust-preventive oil.

[0033] Comparative Example 4 According to Example 8 of the method disclosed in patent document CN115305133A, HVI II-2 base oil and dodecylbenzene base oil were taken by mass percentage to synthesize 8% calcium sulfonate, 7% of a mixture of dinonylnaphthalene sulfonate and calcium carboxylate, 4% dioctyl oxalate, 6% isooctyl palmitate, 1.5% dodecenyl succinate, and 0.5% T501. These raw materials were mixed, heated to 65-75℃, stirred at a constant temperature for 3-4 hours, cooled and filtered to prepare a lubricating electrostatic spray rust-preventive oil.

[0034] Comparative Example 5 According to Example 1 of the method disclosed in patent document CN112342072A, HVI 150 base oil, dodecylbenzene base oil, PAO5 base oil, 12% medium-alkalinity petroleum sulfonate calcium, 2% PEG-60 hydrogenated castor oil, 2% thixocal 2000 / 2000A, 2% bisphenol F epoxy resin, and 1% dodecenyl succinic acid are taken by mass percentage. These raw materials are mixed, heated to 70-80℃, and stirred at high speed at 60-70℃ for 3-4 hours. After cooling and filtration, a thixotropic electrostatic spraying rust-preventive oil is prepared.

[0035] Comparative Example 6 According to Example 7 of the method disclosed in patent document CN111607454A, the following ingredients were mixed by mass percentage: 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% glycerin, 1% sulfurized olefin cottonseed oil, 1 part xylitol sulfurized grease, 0.5 parts bisphenol A, 0.5 parts sulfurized zinc carbamate, 1 part boronized oleamide, and 0.5 parts thiophosphoric butyrate zinc salt. The mixture was stirred at a constant temperature of 50°C for 3 hours, cooled, and filtered to produce a guide rail anti-rust oil.

[0036] Comparative Example 7 According to Example 1 of the method disclosed in patent document CN107312590A, 550 parts of paraffinic base oil, 400 parts of trimethylolpropane oleate, 300 parts of barium petroleum sulfonate, 20 parts of fatty alcohol polyoxyethylene ether-9, 50 parts of sulfurized olefin cottonseed oil, 20 parts of polyisobutylene, and 5 parts of antioxidant T501 are mixed according to the following mass ratios. The mixture is stirred at 45-70℃ for 1-1.5 hours to prepare a smoothing and rust-preventive oil.

[0037] Test case Acid mist resistance test method: Prepare standard test pieces according to SH / T 0218 standard, then coat the rust-preventive oil samples prepared in the examples and comparative examples onto the standard test pieces, place the test pieces in the acid mist test device, prepare a hydrochloric acid solution with 180ml of deionized water and 20ml of hydrochloric acid (mass fraction 38%, analytical grade), place it at the bottom of the acid mist device, and test in an oven at 49℃±1℃ under sealed conditions. Evaluate the acid mist corrosion resistance performance based on the color change and rusting of the test pieces at different times. The longer the test time, the better the acid mist resistance performance.

[0038] Table 2 Test results data for the examples and comparative examples

[0039] The data in Table 2 show that the acid mist resistance test of the embodiments of the present invention can all pass for more than 2 hours, demonstrating good acid mist resistance performance. However, the acid mist resistance performance of the comparative examples is not ideal, and they cannot even pass for half an hour.

Claims

1. Use of an electrostatically sprayed rust preventive oil composition for the storage and / or protection of steel sheets under acid mist atmosphere conditions, characterized in that, The acid mist resistance test method for the electrostatic spraying rust-preventive oil composition is as follows: prepare a standard test piece according to the standard SH / T 0218, then coat the rust-preventive oil sample onto the standard test piece, place the test piece in an acid mist test device, prepare a hydrochloric acid solution with 180 ml of deionized water and 20 ml of 38% hydrochloric acid, place the solution at the bottom of the acid mist device, and test in an oven at 49℃±1℃ under sealed conditions; the acid mist resistance time is not less than 3 hours and up to 5 hours. The electrostatic spraying rust-preventive oil composition comprises the following components in parts by weight: Base oil, 75-90 parts; Oil-soluble rust inhibitor, 5-20 parts; Film-forming aid, 0.1~5 parts; The base oil is either Group I or Group II base oil; the Group I base oil is selected from HVI 75, 150, 350, 400, and 500; the Group II base oil is selected from at least one of HVI II-2, II-4, II-6, and II-8. The oil-soluble rust inhibitors are KX 1183 and CA / W1146; The film-forming aids are ester-based aids and polymeric aids; The ester-based auxiliary agent is selected from at least one of DOP, PETO, S-80, T-80, K-CORR SA-300; the polymeric auxiliary agent is selected from at least one of polyethylene oxidized wax, paraffin wax, ceresin wax, and microcrystalline wax.

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