A marine stern tube oil composition, its preparation method and use

Abstract

The present application relates to the technical field of lubricating oil, and provides a marine propeller shaft oil composition, a preparation method and application thereof.The marine propeller shaft oil composition comprises 1-5 parts by weight of a detergent, 1-5 parts by weight of a dispersant, 1-5 parts by weight of an antioxidant, 0.01-1 parts by weight of a pour point depressant, 0.01-0.5 parts by weight of an antifoaming agent and 83.5-96.98 parts by weight of a base oil; the detergent comprises high-alkaline value synthetic calcium sulfonate and high-alkaline value calcium sulfide alkyl phenol.The marine propeller shaft oil composition provided by the present application has excellent water separation and anti-emulsification performance, and still has good comprehensive performance in a water-containing environment, and fully meets the working condition requirements of a marine propeller shaft.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lubricating oil, more particularly to a marine stern shaft oil composition and a preparation method and application thereof. BACKGROUND

[0002] The stern shaft of a ship is a device linking the engine and the propeller, which has a sealing function, and needs to apply lubricating oil during use. Due to the complex and changeable conditions of navigation, it is difficult to avoid the situation that seawater penetrates into the stern shaft device, which poses a great challenge to the performance of the lubricating oil. Therefore, the lubricating oil applied to the stern shaft device needs to have good water resistance, and still needs to maintain good use performance in the water-containing state, and ordinary lubricating oil is difficult to meet this requirement and cannot be applied to the stern shaft device of a ship.

[0003] Chinese patent CN105623788A discloses a lubricating oil composition, which is prepared by using alkyl mercaptan ester, demulsifier, detergent, antioxidant, dispersant and lubricating base oil. The oil product has improved water separation and anti-emulsification performance by adding the demulsifier. However, the patent does not involve the performance change of the oil product in the water-containing environment, and does not mention whether it can be applied to the stern shaft device of a ship. SUMMARY

[0004] The present application aims to provide a marine stern shaft oil composition and a preparation method thereof, so as to solve the technical problem that ordinary lubricating oil is difficult to maintain good use performance in the water-containing state and cannot be applied to the stern shaft device of a ship.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present application is as follows:

[0006] In a first aspect, the present application provides a marine stern shaft oil composition, which comprises the following components by weight:

[0007] Detergent: 1-5 parts by weight;

[0008] Dispersant: 1-5 parts by weight;

[0009] Antioxidant: 1-5 parts by weight;

[0010] Pour point depressant: 0.01-1 parts by weight;

[0011] Antifoaming agent: 0.01-0.5 parts by weight;

[0012] Base oil: 83.5-96.98 parts by weight;

[0013] The detergent comprises high-alkaline value calcium sulfonate and high-alkaline value calcium sulfide alkyl phenol.

[0014] According to some embodiments of the present application, the mass ratio of the overbased synthetic calcium sulfonate and the overbased calcium sulfidized alkyl phenate is (0.1-3):1.

[0015] According to some embodiments of the present application, the mass ratio of the overbased synthetic calcium sulfonate and the overbased calcium sulfidized alkyl phenate is (0.5-2):1.

[0016] According to some embodiments of the present application, the total base number of the marine stern tube oil composition is 5-6.

[0017] According to some embodiments of the present application, the antioxidant includes at least one of zinc dithiophosphate, amine antioxidant, phenolic antioxidant, sulfide antioxidant, and carbamate antioxidant.

[0018] According to some embodiments of the present application, the antioxidant includes zinc dithiophosphate, dinonyl diphenylamine, and phenolic ester antioxidant.

[0019] According to some embodiments of the present application, the mass ratio of the zinc dithiophosphate, dinonyl diphenylamine, and phenolic ester antioxidant is 1:(0.2-1):(0.2-1).

[0020] According to some embodiments of the present application, the zinc dithiophosphate includes at least one of dioctyl zinc dithiophosphate (T203) and primary / secondary alkyl zinc dithiophosphate (T204).

[0021] According to some embodiments of the present application, the dispersant includes at least one of monoalkenyl succinimide (T151), bis-succinimide (T154A), and multi-succinimide (T155).

[0022] According to some embodiments of the present application, the pour point depressant includes at least one of polymethacrylate (VX1-248) and poly-alpha olefin (T803A).

[0023] According to some embodiments of the present application, the anti-foaming agent includes at least one of methyl silicone oil (T901) and methyl silicone oil ester (T903).

[0024] According to some embodiments of the present application, the base oil includes at least one of Group I base oil and Group II base oil.

[0025] In a second aspect, the present application provides a preparation method of the marine stern tube oil composition of the first aspect, comprising: adding the detergent, the dispersant, the antioxidant, and the pour point depressant to the base oil, heating to 40-70℃, stirring at a rate of 400-1000 rpm for 15-120 min, then adding the anti-foaming agent, and stirring for 30-120 min, to obtain the marine stern tube oil composition.

[0026] In a third aspect, the present application provides use of the marine stern shaft oil composition according to the first aspect in a marine stern shaft device.

[0027] The present application has at least the following beneficial effects:

[0028] The marine stern shaft oil composition provided by the present application has excellent water separation and anti-emulsification performance, and still has good comprehensive performance in a water-containing environment, and can fully meet the working condition requirements of the marine stern shaft. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in combination with specific examples. It should be understood that the specific examples described herein are only used to illustrate the present application in detail, and do not limit the protection scope of the present application in any way.

[0030] Unless otherwise defined, the technical terms used in the following examples have the same meanings as generally understood by those skilled in the art to which the present application 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 can be purchased on the market or obtained by existing methods; the reagent amount, unless otherwise specified, is the reagent amount in conventional experimental operation; the experimental method, unless otherwise specified, is a conventional method.

[0031] In each embodiment and comparative example of the present application, the amount of each component is in parts by weight.

[0032] Example 1

[0033] The component ratio of the stern shaft oil composition is as follows:

[0034] Detergent: 0.6 parts of high-alkaline synthetic calcium sulfonate T106, 0.6 parts of high-alkaline sulfided alkyl phenol calcium T122;

[0035] Dispersant: 2 parts of polydithyrimide T155;

[0036] Antioxidant: 1 part of bis-octyl zinc dithiophosphate T203, 0.4 parts of dinonyl diphenylamine T558, 0.4 parts of phenolic ester type antioxidant T508;

[0037] Pour point depressant: 0.5 parts of polymethacrylate type pour point depressant VX1-248;

[0038] Antifoaming agent: 0.08 parts of methyl silicone oil antifoaming agent T901;

[0039] Base oil: 94.42 parts of Class I base oil.

[0040] Preparation method: Add detergent, dispersant, antioxidant and pour point depressant to base oil, heat to 55℃, stir at 600 rpm for 0.5 h, add antifoaming agent after uniform mixing, and continue stirring for 1 h to obtain tail shaft oil composition.

[0041] Example 2

[0042] The component ratio of the tail shaft oil composition:

[0043] Detergent: 0.8 parts high-alkalinity synthetic calcium sulfonate T106, 0.4 parts high-alkalinity alkylphenol calcium sulfide T122;

[0044] Dispersant: 1 part monoalkenyl succinimide T151;

[0045] Antioxidant: 1 part bis(octyl)dithiophosphate zinc T203, 0.4 parts dinonyldiphenylamine T558, 0.4 parts phenolic ester antioxidant T508;

[0046] Pour point depressant: 0.3 parts of polymethyl methacrylate type pour point depressant VX1-248;

[0047] Antifoaming agent: 0.08 parts methyl silicone oil antifoaming agent T901;

[0048] Base oil: Group II base oil 95.62 parts.

[0049] The preparation method is the same as in Example 1.

[0050] Example 3

[0051] The component ratio of the tail shaft oil composition:

[0052] Detergent: 0.4 parts high-alkalinity synthetic calcium sulfonate T106, 0.8 parts high-alkalinity alkylphenol calcium sulfide T122;

[0053] Dispersant: 3 parts monoalkenyl succinimide T151;

[0054] Antioxidant: 1 part bis(octyl)dithiophosphate zinc T203, 0.4 parts dinonyldiphenylamine T558, 0.4 parts phenolic ester antioxidant T508;

[0055] Pour point depressant: 0.7 parts of polymethyl methacrylate type pour point depressant VX1-248;

[0056] Antifoaming agent: 0.06 parts methyl silicone oil antifoaming agent T901;

[0057] Base oil: Group II base oil 93.24 parts.

[0058] The preparation method is the same as in Example 1.

[0059] Example 4

[0060] Component ratio of propeller shaft oil composition:

[0061] Detergent: 0.6 parts of high base number synthetic calcium sulfonate T106, 0.6 parts of high base number calcium sulfated alkylphenol T122;

[0062] Dispersant: 2 parts of monoalkyl succinimide T151;

[0063] Antioxidant: 1 part of primary / secondary zinc dialkyldithiophosphate T204, 0.4 parts of dinonyl diphenylamine T558, 0.4 parts of phenol ester type antioxidant T508;

[0064] Pour point depressant: 0.5 parts of polymethacrylate type pour point depressant VX1-248;

[0065] Antifoaming agent: 0.08 parts of methyl silicone oil antifoaming agent T901;

[0066] Base oil: 94.42 parts of Group I base oil.

[0067] Preparation method is the same as in Example 1.

[0068] Comparative Example 1

[0069] Component ratio of propeller shaft oil composition:

[0070] Detergent: 1 part of high base number calcium sulfated alkylphenol T122;

[0071] Dispersant: 2 parts of poly succinimide T155;

[0072] Antioxidant: 1 part of bis octyl zinc dithiophosphate T203, 0.4 parts of dinonyl diphenylamine T558, 0.4 parts of phenol ester type antioxidant T508;

[0073] Pour point depressant: 0.5 parts of polymethacrylate type pour point depressant VX1-248;

[0074] Antifoaming agent: 0.08 parts of methyl silicone oil antifoaming agent T901;

[0075] Base oil: 94.62 parts of Group I base oil.

[0076] Preparation method is the same as in Example 1.

[0077] Comparative Example 2

[0078] Component ratio of propeller shaft oil composition:

[0079] Detergent: 1 part of high base number synthetic calcium sulfonate T106;

[0080] Dispersant: 2 parts of poly succinimide T155;

[0081] Antioxidant: 1 part of zinc bis-octyl dithiophosphate T203, 0.4 part of dinonyl diphenylamine T558, 0.4 part of phenolic ester antioxidant T508;

[0082] Pour point depressant: 0.5 part of polymethacrylate type pour point depressant VX1-248;

[0083] Antifoaming agent: 0.08 part of methyl silicone oil antifoaming agent T901;

[0084] Base oil: 94.62 parts of Group I base oil.

[0085] The preparation method is referred to Example 1.

[0086] Comparative Example 3

[0087] Component ratio of the stern tube oil composition:

[0088] Detergent: 0.6 part of high base number synthetic calcium sulfonate T106, 0.6 part of high base number calcium sulfated alkyl phenate T122;

[0089] Dispersant: 2 parts of polyadipic imide T155;

[0090] Antioxidant: 1 part of zinc bis-octyl dithiophosphate T203, 0.8 part of dinonyl diphenylamine T558;

[0091] Pour point depressant: 0.5 part of polymethacrylate type pour point depressant VX1-248;

[0092] Antifoaming agent: 0.08 part of methyl silicone oil antifoaming agent T901;

[0093] Base oil: 94.42 parts of Group I base oil.

[0094] The preparation method is referred to Example 1.

[0095] Comparative Example 4

[0096] Component ratio of the stern tube oil composition:

[0097] Detergent: 0.6 part of high base number synthetic calcium sulfonate T106, 0.6 part of high base number calcium sulfated alkyl phenate T122;

[0098] Dispersant: 2 parts of polyadipic imide T155;

[0099] Antioxidant: 1 part of zinc bis-octyl dithiophosphate T203, 0.8 part of phenolic ester antioxidant T508;

[0100] Pour point depressant: 0.5 part of polymethacrylate type pour point depressant VX1-248;

[0101] Antifoaming agent: 0.08 part of methyl silicone oil antifoaming agent T901;

[0102] Base oil: Group I base oil 94.42 parts

[0103] The preparation method is the same as in Example 1.

[0104] Comparative Example 5

[0105] Component ratio of the stern tube oil composition:

[0106] Detergent: 0.6 parts of high base number synthetic calcium sulfonate T106, 0.6 parts of high base number calcium sulfated alkylphenate T122;

[0107] Dispersant: 2 parts of polydithyric imide T155;

[0108] Antioxidant: 0.9 parts of dinonyl diphenylamine T558, 0.9 parts of phenol ester type antioxidant T508;

[0109] Pour point depressant: 0.5 parts of polymethacrylate type pour point depressant VX1-248;

[0110] Antifoaming agent: 0.08 parts of methyl silicone oil antifoaming agent T901;

[0111] Base oil: Group I base oil 94.42 parts

[0112] The preparation method is the same as in Example 1.

[0113] Comparative Example 6

[0114] Component ratio of the stern tube oil composition:

[0115] Detergent: 0.6 parts of high base number synthetic calcium sulfonate T106, 0.6 parts of high base number calcium sulfated alkylphenate T122;

[0116] Dispersant: 2 parts of polydithyric imide T155;

[0117] Antioxidant: 0.5 parts of bisoctyl zinc dithiophosphate T203, 0.2 parts of dinonyl diphenylamine T558, 0.2 parts of phenol ester type antioxidant T508;

[0118] Pour point depressant: 0.5 parts of polymethacrylate type pour point depressant VX1-248;

[0119] Antifoaming agent: 0.08 parts of methyl silicone oil antifoaming agent T901;

[0120] Base oil: Group I base oil 95.32 parts

[0121] The preparation method is the same as in Example 1.

[0122] Comparative Example 7

[0123] Component ratio of the stern tube oil composition:

[0124] Detergent: 0.8 part of high base number calcium sulfonate T106, 0.8 part of middle base number calcium naphthenate T112;

[0125] Dispersant: 2 parts of monoolefin succinimide T151;

[0126] Antioxidant: 1 part of bis-octyl zinc dithiophosphate T203, 0.4 part of dinonyl diphenylamine T558, 0.4 part of phenol ester type antioxidant T508;

[0127] Pour point depressant: 0.5 part of polymethacrylate type pour point depressant VX1-248;

[0128] Antifoaming agent: 0.08 part of methyl silicone oil antifoaming agent T901;

[0129] Base oil: 94.02 parts of Group I base oil.

[0130] Preparation method is the same as in Example 1.

[0131] Comparative Example 8

[0132] Component ratio of the stern tube oil composition:

[0133] Detergent: 0.8 part of high base number calcium sulfonate T106, 0.8 part of middle base number calcium naphthenate T112;

[0134] Dispersant: 2 parts of monoolefin succinimide T151;

[0135] Antioxidant: 1 part of bis-octyl zinc dithiophosphate T203, 0.4 part of dinonyl diphenylamine T558, 0.4 part of phenol ester type antioxidant T508;

[0136] Pour point depressant: 0.5 part of polymethacrylate type pour point depressant VX1-248;

[0137] Antifoaming agent: 0.08 part of methyl silicone oil antifoaming agent T901;

[0138] Base oil: 94.02 parts of Group I base oil.

[0139] Preparation method is the same as in Example 1.

[0140] Comparative Example 9

[0141] Component ratio of the stern tube oil composition:

[0142] Detergent: 0.8 part of high base number calcium sulfonate T106, 0.8 part of middle base number calcium naphthenate T112;

[0143] Dispersant: 2 parts of monoolefin succinimide T151;

[0144] Antioxidant: 1 part of zinc bis-dioctyl dithiophosphate T203, 0.4 part of dinonyl aniline T558, 0.4 part of phenolic ester antioxidant T508;

[0145] Pour point depressant: 0.5 part of polymethacrylate type pour point depressant VX1-248;

[0146] Antifoam agent: 0.08 part of methyl silicone oil antifoam agent T901;

[0147] Base oil: 94.02 parts of Group I base oil.

[0148] The preparation method refers to Example 1.

[0149] The formula composition of the stern tube oil compositions of the examples and comparative examples is shown in Table 1.

[0150] Table 1 Formula composition of stern tube oil compositions of examples and comparative examples

[0151]

[0152] The stern tube oil compositions prepared in the examples and comparative examples were subjected to water separation and anti-emulsification performance tests. The test methods were ship oil water separation test (SH / T 0619-1995) and petroleum and petroleum synthetic liquid anti-emulsification performance test (GB / T 7305-2003), respectively. The test results are shown in Table 2.

[0153] The water separation and anti-emulsification performance tests examine the water separation ability of the oil. In the water separation test, the more water layers and the less emulsion layers of the oil, the better the water separation performance. In the anti-emulsification test, the more complete separation of the oil and water phases and the less emulsion layers, the better the anti-emulsification performance.

[0154] Table 2 Water separation and anti-emulsification test results

[0155]

[0156] The stern tube oil compositions prepared in the examples and comparative examples were subjected to water separation and anti-emulsification performance tests. The test methods were ship oil water separation test (SH / T 0619-1995) and petroleum and petroleum synthetic liquid anti-emulsification performance test (GB / T 7305-2003), respectively. The test results are shown in Table 2.

[0157] The four-ball test and the oxidation induction period test examine the anti-wear performance and the oxidation resistance of the oil, respectively. The higher the maximum non-seizure load and the seizure load in the four-ball test, the better the anti-wear performance. The longer the oxidation induction period, the better the oxidation resistance.

[0158] Table 3 Oil performance in water-containing environment

[0159]

[0160] By comparing the test results of comparative example 1 and comparative examples 1-2, 7-9, it can be seen that in the stern tube oil composition provided by the application, the use of high base value synthetic calcium sulfonate T106 and high base value sulfided alkyl phenol calcium T122 in combination can effectively improve the water separation performance of the oil.

[0161] By comparing the test results of comparative examples 1, 4 and comparative examples 3-5, it can be seen that in the stern tube oil composition provided by the application, the use of zinc dithiophosphate, dinonyl diphenylamine and phenolic ester antioxidant in combination can make the oil have good antioxidant and anti-wear performance.

[0162] It should be noted that the above-described examples are only used to explain the present application and do not constitute any limitation on the present application. The present application has been described by referring to typical examples, but it should be understood that the words used therein are descriptive and explanatory words, rather than limiting words. The present application can be modified within the scope of the claims of the present application, and the present application can be revised without departing from the scope and spirit of the present application. Although the present application described therein relates to specific methods, materials and examples, it does not mean that the present application is limited to the specific examples disclosed therein, on the contrary, the present application can be extended to all other methods and applications having the same function.

Claims

1. A marine stern tube oil composition characterised in that, Composed of the following components by weight fraction: Detergent: 1-5 parts by weight; Dispersant: 1-5 parts by weight; Antioxidant: 1-5 parts by weight; Pour point depressant: 0.01-1 parts by weight; Antifoaming agent: 0.01-0.5 parts by weight; Base oil: 83.5-96.98 parts by weight; The detergent is composed of high base value synthetic calcium sulfonate T106 and high base value sulfided calcium alkyl phenol T122, the mass ratio of the high base value synthetic calcium sulfonate T106 and high base value sulfided calcium alkyl phenol T122 is (0.1-3):1; The antioxidant is composed of zinc dithiophosphate, dinonyl diphenylamine and phenolic ester type antioxidant, the mass ratio of the zinc dithiophosphate, dinonyl diphenylamine and phenolic ester type antioxidant is 1:(0.2-1):(0.2-1); the zinc dithiophosphate includes at least one of T203 and T204; The dispersant includes at least one of T151, T154A and T155. The pour point depressant includes at least one of polymethacrylate and poly-alpha olefin.

2. Marine stern tube oil composition according to claim 1, characterized in that The antifoaming agent includes at least one of methyl silicone oil and methyl silicone oil ester.

3. Marine stern tube oil composition according to claim 1 or 2, characterised in that, The base oil includes at least one of class I base oil and class II base oil.

4. Marine stern tube oil composition according to claim 1 or 2, characterised in that Comprise:

5. A process for the preparation of a marine stern tube oil composition as claimed in any one of claims 1 to 4, characterised in that, The marine stern tube oil composition is prepared by adding the detergent, dispersant, antioxidant and pour point depressant into the base oil, heating to 40-70℃, stirring at a rate of 400-1000 rpm for 15-120 min, then adding the antifoaming agent and stirring for 30-120 min.

6. The use of the marine stern tube oil composition of any one of claims 1-4 in a marine stern tube device. ​

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