Anti-rust oil for protecting surfaces of mechanical parts and preparation method of anti-rust oil
By forming a multi-layer molecular adsorption film with components such as high-alkalinity barium sulfonate, oxidized petroleum ester barium soap, and pentaerythritol oleate, combined with metal deactivators and film-forming agents, the problem of poor performance of existing rust inhibitors is solved, and a long-lasting rust prevention effect is achieved.
Patent Information
- Application Number
- CN202411517739.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-02-25
AI Technical Summary
Existing rust inhibitors are generally ineffective, have a short rust prevention period, and cannot effectively protect mechanical parts for a long time.
A multilayer molecular adsorption film is formed by using high-alkalinity barium sulfonate, oxidized petroleum ester barium soap and pentaerythritol oleate, etc., combined with benzotriazole and o-toluenediamine as metal deactivators, which improve the rust prevention effect through synergistic effect, and a film-forming agent is added to prevent oil film loss.
Significantly improves the stability and rust prevention period of rust-preventive oil, achieving a damp heat test duration of over 62 days and a rust prevention period of over 35 days.
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Abstract
Description
Technical Field
[0001] The invention relates to the technical field of rust-proof oils, and in particular to rust-proof oil for protecting the surface of mechanical parts and a preparation method thereof. Background Art
[0002] In the process of mechanical manufacturing and maintenance, bluing and other surface treatments are important and indispensable processes for parts. These processes inevitably come into contact with water or aqueous solutions. After the parts come into contact with water or aqueous solutions, it is easy for trace amounts of water to exist in the grooves, slots, seams, holes, joint surfaces, hand contact surfaces, parking surfaces or rougher surfaces of the parts. After oiling, this part of the water is covered by the grease, which will inevitably cause rust on the parts. The existing rust inhibitors are generally effective, with a short anti-rust cycle, and cannot provide long-term rust prevention. Summary of the invention
[0003] In view of the deficiencies in the prior art, the present invention provides an anti-rust oil for protecting the surface of mechanical parts and a preparation method thereof, which improves the anti-rust effect of the anti-rust oil and prolongs the anti-rust period.
[0004] The technical solution adopted by the present invention is:
[0005] A rust-proof oil for protecting the surface of mechanical parts, wherein: the rust-proof oil comprises the following components in parts by weight:
[0006] 60-80 parts of base oil, 5-7 parts of high base barium sulfonate, 1-3 parts of oxidized petroleum barium soap, 0.1-2 parts of pentaerythritol oleate, 3-6 parts of rust inhibitor, 1-2 parts of metal deactivator.
[0007] High base sulfonate has excellent neutralization and floating dispersibility. High base sulfonate is an organic compound with polar groups and long carbon chains. One end is a polar group and the other end is a hydrophobic carbon chain. The carbon chain is similar to oil molecules and is easily soluble in oil. The polar group is tightly adsorbed on the metal surface through chemical bonds, so that the corrosion inhibitor molecules are arranged in a directional manner on the metal surface to form a hydrophobic dense layer. The adsorption protective film formed can prevent water, oxygen and corrosive substances from penetrating into the metal surface, eliminating rust. Only one corrosion inhibitor, petroleum barium sulfonate, is used. Due to its low concentration, it cannot form a hydrophobic layer on the metal surface. A dense arrangement film is formed with larger gaps between molecules, and water molecules can easily invade the metal surface. Therefore, it is necessary to add oxidized petroleum tallow barium soap with strong oil solubility as another corrosion inhibitor, and add pentaerythritol oleate. Through the synergistic effect of the three, a multilayer molecular adsorption film is formed to block the pores together, making the adsorption film more complete, and the interaction between the adsorbents can also improve the stability of the adsorption layer; the combination of high alkalinity barium sulfonate, oxidized petroleum tallow barium soap and pentaerythritol oleate barium soap makes the corrosion inhibitor have stronger water resistance, and a good protection effect can be obtained with a small amount of corrosion inhibitor.
[0008] Preferably, the anti-rust oil for the surface protection of mechanical parts, wherein: the base oil comprises 30-40 parts of gasoline, 25-30 parts of kerosene, and 5-10 parts of naphthenic oil. Gasoline, kerosene and naphthenic oil are used as base oils to reduce the viscosity of the base oil and improve its modulation and fluidity at low temperatures.
[0009] Preferably, the anti-rust oil for protecting the surface of mechanical parts, wherein: the anti-rust agent comprises 1-2 parts of dodecenylsuccinic acid, 1-2 parts of barium dinonylnaphthalenesulfonate, 0.5-1 parts of triethylenediamine, and 0.5-1 parts of hexadecanedioic acid.
[0010] The anti-rust mechanism of barium dinonylnaphthalene sulfonate is that its polar part can be adsorbed on the metal surface and discharge the moisture on the metal surface at the same time, and the non-polar part can form a barrier film, which plays a good protective role; the central atoms of -OH and -NH2 of triethylenediamine, dodecenylsuccinic acid and hexadecanedioic acid can coordinate with the empty d electron orbit of Fe to produce chemical adsorption and play an anti-rust role. Dodecenylsuccinic acid, barium dinonylnaphthalene sulfonate, triethylenediamine and hexadecanedioic acid work together as rust inhibitors to achieve the best anti-rust effect.
[0011] Preferably, in the anti-rust oil for protecting the surface of mechanical parts, the metal deactivator comprises 0.5-1 part of benzotriazole and 0.5-1 part of o-toluenediamine. Benzotriazole and o-toluenediamine work together as metal deactivators to prevent metals from automatically oxidizing the anti-rust oil.
[0012] Preferably, the anti-rust oil for protecting the surface of mechanical parts further comprises 0.1-1 part of 2,4-dimethyl-6-tert-butylphenol. 2,4-dimethyl-6-tert-butylphenol is used to prevent or delay the automatic oxidation of the anti-rust oil to generate sludge or colloid due to heat, thereby improving the stability.
[0013] Preferably, the rust-proof oil for protecting the surface of mechanical parts further comprises 0.5-2 parts of trimethylsiloxysilicate and 0.1-1 parts of diethylene adipate. Trimethylsiloxysilicate and diethylene adipate work together as film-forming agents to form a layer of isolation film on the metal surface to play a protective role and strengthen the oil film strength, thereby preventing the rust-proof oil from being washed away by condensed dew in salt fog and hot and humid environments.
[0014] Preferably, in the anti-rust oil for protecting the surface of mechanical parts, the total base number of the high-base barium sulfonate is ≥300.
[0015] A method for preparing anti-rust oil for surface protection of mechanical parts, comprising the following steps:
[0016] Step S1. Add 60-80 parts of base oil into a reactor, heat it to 60-70°C, then add 3-6 parts of rust inhibitor and 1-2 parts of metal deactivator, and stir for 10-20 minutes;
[0017] Step S2. Add 0.1-1 parts of 2,4-dimethyl-6-tert-butylphenol, 0.5-2 parts of trimethylsiloxysilicate, and 0.1-1 parts of diethylene adipate to the reaction kettle and stir for 20-40 minutes;
[0018] Step S3. Add 5-7 parts of high base barium sulfonate, 1-3 parts of oxidized petroleum barium soap and 0.1-2 parts of pentaerythritol oleate to the reaction kettle, keep stirring at 70-80°C for 20-40 minutes, cool down, and obtain anti-rust oil for surface protection of mechanical parts.
[0019] Advantages of the present invention:
[0020] (1) The rust-proof oil for protecting the surface of mechanical parts and its preparation method of the present invention use gasoline, kerosene and cycloalkyl oil as base oils to reduce the viscosity of the base oils and improve their modulating properties and fluidity at low temperatures; dodecenylsuccinic acid, barium dinonylnaphthalenesulfonate, triethylenediamine and hexadecanoic acid are used in conjunction with each other as rust-proof agents to achieve the best rust-proof effect; benzotriazole and o-toluenediamine are used in conjunction with each other as metal deactivators to prevent the metal from automatically oxidizing the rust-proof oil; 2,4-dimethyl-6-tert-butylphenol is used to prevent or delay the rust-proof oil from automatically oxidizing to form sludge or colloid due to heat, thereby improving the stability; methylsiloxysilicate and diethylene adipate are used in conjunction with each other as film-forming agents to form a layer of isolation film on the metal surface to play a protective role and strengthen the oil film strength, thereby preventing the rust-proof oil from being washed away by condensed dew in salt fog and hot and humid environments.
[0021] (2) The anti-rust oil for protecting the surface of mechanical parts of the present invention and its preparation method have good stability, the wet heat test can reach more than 62 days, and the anti-rust period can reach more than 35 days. DETAILED DESCRIPTION
[0022] The present invention will be further described below in conjunction with specific embodiments.
[0023] Example 1
[0024] An anti-rust oil for protecting the surface of mechanical parts, the anti-rust oil comprises the following components by weight:
[0025] 60 parts of base oil, 5 parts of high base barium sulfonate, 1 part of oxidized petroleum barium soap, 0.1 part of pentaerythritol oleate, 3 parts of rust inhibitor, 1 part of metal deactivator, 0.1 part of 2,4-dimethyl-6-tert-butylphenol, 0.5 part of trimethylsiloxysilicate, and 0.1 part of diethylene adipate.
[0026] The base oil includes 30 parts of gasoline, 25 parts of kerosene, and 5 parts of cycloalkane oil; the rust inhibitor includes 1 part of dodecenylsuccinic acid, 1 part of barium dinonylnaphthalenesulfonate, 0.5 parts of triethylenediamine, and 0.5 parts of hexadecanoic acid; the metal deactivator includes 0.5 parts of benzotriazole and 0.5 parts of o-toluenediamine, and the total base number of the high base number barium sulfonate is ≥300.
[0027] The method for preparing the anti-rust oil for surface protection of mechanical parts in this embodiment comprises the following steps:
[0028] Step S1. Add 60 parts of base oil into a reactor, heat it to 65°C, then add 3 parts of rust inhibitor and 1 part of metal deactivator, and stir for 15 minutes;
[0029] Step S2. Add 0.1 parts of 2,4-dimethyl-6-tert-butylphenol, 0.5 parts of trimethylsiloxysilicate, and 0.1 parts of diethylene adipate to the reaction kettle and stir for 30 minutes;
[0030] Step S3. Add 5 parts of high base barium sulfonate, 1 part of oxidized petroleum barium soap and 0.1 part of pentaerythritol oleate into the reaction kettle, keep stirring at 80°C for 30 minutes, cool down, and obtain anti-rust oil for surface protection of mechanical parts.
[0031] Example 2
[0032] An anti-rust oil for protecting the surface of mechanical parts, the anti-rust oil comprises the following components by weight:
[0033] 70 parts of base oil, 6 parts of high base barium sulfonate, 2 parts of oxidized petroleum barium soap, 1 part of pentaerythritol oleate, 5 parts of rust inhibitor, 2 parts of metal deactivator, 1 part of 2,4-dimethyl-6-tert-butylphenol, 1 part of trimethylsiloxysilicate, and 0.5 parts of diethylene adipate.
[0034] The base oil includes 35 parts of gasoline, 25 parts of kerosene, and 10 parts of cycloalkane oil; the rust inhibitor includes 1 part of dodecenylsuccinic acid, 2 parts of barium dinonylnaphthalenesulfonate, 1 part of triethylenediamine, and 1 part of hexadecanoic acid; the metal deactivator includes 1 part of benzotriazole and 1 part of o-toluenediamine, and the total base number of the high base number barium sulfonate is ≥300.
[0035] The method for preparing the anti-rust oil for surface protection of mechanical parts in this embodiment comprises the following steps:
[0036] Step S1. Add 70 parts of base oil into a reactor, heat it to 65°C, then add 5 parts of rust inhibitor and 2 parts of metal deactivator, and stir for 15 minutes;
[0037] Step S2. Add 1 part of 2,4-dimethyl-6-tert-butylphenol, 1 part of trimethylsiloxysilicate, and 0.5 part of diethylene adipate to the reaction kettle and stir for 30 minutes;
[0038] Step S3. Add 6 parts of high base barium sulfonate, 2 parts of oxidized petroleum barium soap and 1 part of pentaerythritol oleate into the reaction kettle, keep stirring at 80°C for 30 minutes, cool down, and obtain anti-rust oil for surface protection of mechanical parts.
[0039] Example 3
[0040] An anti-rust oil for protecting the surface of mechanical parts, the anti-rust oil comprises the following components by weight:
[0041] 80 parts of base oil, 7 parts of high base barium sulfonate, 3 parts of oxidized petroleum barium soap, 2 parts of pentaerythritol oleate, 6 parts of rust inhibitor, 2 parts of metal deactivator, 1 part of 2,4-dimethyl-6-tert-butylphenol, 2 parts of trimethylsiloxysilicate, and 1 part of diethylene adipate.
[0042] The base oil includes 40 parts of gasoline, 30 parts of kerosene, and 10 parts of cycloalkane oil; the rust inhibitor includes 2 parts of dodecenylsuccinic acid, 2 parts of barium dinonylnaphthalenesulfonate, 1 part of triethylenediamine, and 1 part of hexadecanoic acid; the metal deactivator includes 1 part of benzotriazole and 1 part of o-toluenediamine, and the total base number of the high base number barium sulfonate is ≥300.
[0043] The method for preparing the anti-rust oil for surface protection of mechanical parts in this embodiment comprises the following steps:
[0044] Step S1. Add 80 parts of base oil into a reactor, heat it to 65°C, then add 6 parts of rust inhibitor and 2 parts of metal deactivator, and stir for 15 minutes;
[0045] Step S2. Add 1 part of 2,4-dimethyl-6-tert-butylphenol, 2 parts of trimethylsiloxysilicate, and 1 part of diethylene adipate to the reaction kettle and stir for 30 minutes;
[0046] Step S3. Add 7 parts of high base barium sulfonate, 3 parts of oxidized petroleum barium soap and 2 parts of pentaerythritol oleate into the reaction kettle, keep stirring at 80°C for 30 minutes, cool down, and obtain anti-rust oil for surface protection of mechanical parts.
[0047] Comparative Example 1
[0048] An anti-rust oil for protecting the surface of mechanical parts, the anti-rust oil comprises the following components by weight:
[0049] 60 parts of base oil, 5 parts of high base barium sulfonate, 1 part of oxidized petroleum fat barium soap, 3 parts of rust inhibitor, 1 part of metal deactivator, 0.1 part of 2,4-dimethyl-6-tert-butylphenol, 0.5 part of trimethylsiloxysilicate, and 0.1 part of diethylene adipate.
[0050] The base oil includes 30 parts of gasoline, 25 parts of kerosene, and 5 parts of cycloalkane oil; the rust inhibitor includes 1 part of dodecenylsuccinic acid, 1 part of barium dinonylnaphthalenesulfonate, 0.5 parts of triethylenediamine, and 0.5 parts of hexadecanoic acid; the metal deactivator includes 0.5 parts of benzotriazole and 0.5 parts of o-toluenediamine, and the total base number of the high base number barium sulfonate is ≥300.
[0051] The method for preparing the anti-rust oil for surface protection of mechanical parts in this embodiment comprises the following steps:
[0052] Step S1. Add 60 parts of base oil into a reactor, heat it to 65°C, then add 3 parts of rust inhibitor and 1 part of metal deactivator, and stir for 15 minutes;
[0053] Step S2. Add 0.1 parts of 2,4-dimethyl-6-tert-butylphenol, 0.5 parts of trimethylsiloxysilicate, and 0.1 parts of diethylene adipate to the reaction kettle and stir for 30 minutes;
[0054] Step S3. Add 5 parts of high-base barium sulfonate and 1 part of oxidized petroleum barium soap into the reaction kettle, keep stirring at 80° C. for 30 minutes, and cool down to obtain anti-rust oil for surface protection of mechanical parts.
[0055] Comparative Example 2
[0056] An anti-rust oil for protecting the surface of mechanical parts, the anti-rust oil comprises the following components by weight:
[0057] 70 parts of base oil, 6 parts of high base barium sulfonate, 2 parts of oxidized petroleum barium soap, 1 part of pentaerythritol oleate, 5 parts of rust inhibitor, 2 parts of metal deactivator, 1 part of 2,4-dimethyl-6-tert-butylphenol, 1 part of trimethylsiloxysilicate, and 0.5 parts of diethylene adipate.
[0058] The base oil includes 35 parts of gasoline, 25 parts of kerosene and 10 parts of cycloalkane oil; the rust inhibitor includes 1 part of dodecenylsuccinic acid and 4 parts of barium dinonylnaphthalenesulfonate; the metal deactivator includes 1 part of benzotriazole and 1 part of o-toluenediamine, and the total base number of the high base number barium sulfonate is ≥300.
[0059] The method for preparing the anti-rust oil for surface protection of mechanical parts in this embodiment comprises the following steps:
[0060] Step S1. Add 70 parts of base oil into a reactor, heat it to 65°C, then add 5 parts of rust inhibitor and 2 parts of metal deactivator, and stir for 15 minutes;
[0061] Step S2. Add 1 part of 2,4-dimethyl-6-tert-butylphenol, 1 part of trimethylsiloxysilicate, and 0.5 part of diethylene adipate to the reaction kettle and stir for 30 minutes;
[0062] Step S3. Add 6 parts of high base barium sulfonate, 2 parts of oxidized petroleum barium soap and 1 part of pentaerythritol oleate into the reaction kettle, keep stirring at 80°C for 30 minutes, cool down, and obtain anti-rust oil for surface protection of mechanical parts.
[0063] Comparative Example 3
[0064] An anti-rust oil for protecting the surface of mechanical parts, the anti-rust oil comprises the following components by weight:
[0065] 80 parts of base oil, 7 parts of high base barium sulfonate, 3 parts of oxidized petroleum barium soap, 2 parts of pentaerythritol oleate, 6 parts of rust inhibitor, 2 parts of metal deactivator, 1 part of 2,4-dimethyl-6-tert-butylphenol, and 2 parts of trimethylsiloxysilicate.
[0066] The base oil includes 40 parts of gasoline, 30 parts of kerosene, and 10 parts of cycloalkane oil; the rust inhibitor includes 2 parts of dodecenylsuccinic acid, 2 parts of barium dinonylnaphthalenesulfonate, 1 part of triethylenediamine, and 1 part of hexadecanoic acid; the metal deactivator includes 1 part of benzotriazole and 1 part of o-toluenediamine, and the total base number of the high base number barium sulfonate is ≥300.
[0067] The method for preparing the anti-rust oil for surface protection of mechanical parts in this embodiment comprises the following steps:
[0068] Step S1. Add 80 parts of base oil into a reactor, heat it to 65°C, then add 6 parts of rust inhibitor and 2 parts of metal deactivator, and stir for 15 minutes;
[0069] Step S2. Add 1 part of 2,4-dimethyl-6-tert-butylphenol and 2 parts of trimethylsiloxysilicate to the reaction kettle and stir for 30 minutes;
[0070] Step S3. Add 7 parts of high base barium sulfonate, 3 parts of oxidized petroleum barium soap and 2 parts of pentaerythritol oleate into the reaction kettle, keep stirring at 80°C for 30 minutes, cool down, and obtain anti-rust oil for surface protection of mechanical parts.
[0071] Comparative Example 4
[0072] An anti-rust oil for protecting the surface of mechanical parts, the anti-rust oil comprises the following components by weight:
[0073] 80 parts of base oil, 7 parts of high base barium sulfonate, 3 parts of oxidized petroleum barium soap, 2 parts of pentaerythritol oleate, 6 parts of rust inhibitor, 2 parts of metal deactivator, 2 parts of trimethylsiloxysilicate, 1 part of diethylene adipate.
[0074] The base oil includes 40 parts of gasoline, 30 parts of kerosene, and 10 parts of cycloalkane oil; the rust inhibitor includes 2 parts of dodecenylsuccinic acid, 2 parts of barium dinonylnaphthalenesulfonate, 1 part of triethylenediamine, and 1 part of hexadecanoic acid; the metal deactivator includes 1 part of benzotriazole and 1 part of o-toluenediamine, and the total base number of the high base number barium sulfonate is ≥300.
[0075] The method for preparing the anti-rust oil for surface protection of mechanical parts in this embodiment comprises the following steps:
[0076] Step S1. Add 80 parts of base oil into a reactor, heat it to 65°C, then add 6 parts of rust inhibitor and 2 parts of metal deactivator, and stir for 15 minutes;
[0077] Step S2. Add 2 parts of trimethylsiloxysilicate and 1 part of diethylene adipate to the reaction kettle and stir for 30 minutes;
[0078] Step S3. Add 7 parts of high base barium sulfonate, 3 parts of oxidized petroleum barium soap and 2 parts of pentaerythritol oleate into the reaction kettle, keep stirring at 80°C for 30 minutes, cool down, and obtain anti-rust oil for surface protection of mechanical parts.
[0079] The performance of the rust-proof oils prepared in Examples 1-3 and Comparative Examples 1-4 was tested, and the results are shown in Table 1.
[0080] Table 1
[0081]
[0082] It can be seen from Table 1 that the rust-proof oils prepared in Examples 1-3 have good stability, the wet heat test can last for more than 62 days, and the rust-proof period can last for more than 35 days.
[0083] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.
Claims
1. An anti-rust oil for surface protection of mechanical parts, characterized by: By weight, the anti-rust oil includes the following components: 60-80 parts of base oil, 5-7 parts of high base barium sulfonate, 1-3 parts of oxidized petroleum barium soap, 0.1-2 parts of pentaerythritol oleate, 3-6 parts of rust inhibitor, 1-2 parts of metal deactivator.
2. The anti-rust oil for surface protection of mechanical parts according to claim 1, characterized in that: The base oil comprises 30-40 parts of gasoline, 25-30 parts of kerosene and 5-10 parts of naphthenic oil.
3. The anti-rust oil for surface protection of mechanical parts according to claim 1, characterized in that: The rust inhibitor comprises 1-2 parts of dodecenylsuccinic acid, 1-2 parts of barium dinonylnaphthalenesulfonate, 0.5-1 parts of triethylenediamine, and 0.5-1 parts of hexadecanoic acid.
4. The anti-rust oil for surface protection of mechanical parts according to claim 1, characterized in that: The metal deactivator comprises 0.5-1 part of benzotriazole and 0.5-1 part of o-toluenediamine.
5. The anti-rust oil for surface protection of mechanical parts according to claim 1, characterized in that: The anti-rust oil also includes 0.1-1 part of 2,4-dimethyl-6-tert-butylphenol.
6. The anti-rust oil for surface protection of mechanical parts according to claim 1, characterized in that: The anti-rust oil also includes 0.5-2 parts of trimethylsiloxysilicate and 0.1-1 parts of diethylene adipate.
7. The anti-rust oil for surface protection of mechanical parts according to claim 1, characterized in that: The total base number of the high base number barium sulfonate is ≥300.
8. The method for preparing the anti-rust oil for surface protection of mechanical parts according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step S1. Add 60-80 parts of base oil into a reactor, heat it to 60-70°C, then add 3-6 parts of rust inhibitor and 1-2 parts of metal deactivator, and stir for 10-20 minutes; Step S2. Add 0.1-1 parts of 2,4-dimethyl-6-tert-butylphenol, 0.5-2 parts of trimethylsiloxysilicate, and 0.1-1 parts of diethylene adipate to the reaction kettle and stir for 20-40 minutes; Step S3. Add 5-7 parts of high base barium sulfonate, 1-3 parts of oxidized petroleum barium soap and 0.1-2 parts of pentaerythritol oleate to the reaction kettle, keep stirring at 70-80°C for 20-40 minutes, cool down, and obtain anti-rust oil for surface protection of mechanical parts.