Low-temperature composite calcium sulfonate-based lubricating grease and preparation method thereof

A technology for compounding calcium sulfonate and synthesizing calcium sulfonate is applied in the field of lubricating grease, which can solve problems such as affecting the lubricating performance of lubricating grease, and achieve the effects of improving service life, improving low temperature resistance, and improving anti-oxidation and anti-corrosion performance.

Inactive Publication Date: 2020-04-10

江苏澳润新材料有限公司

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AI-Extracted Technical Summary

Problems solved by technology

[0004] The existing lubricating grease will harden at low temperature, thereby affecting the lubricating performance of the lubricating grease....

Method used

In the present invention, through the deployment of low-temperature base oil, can improve the low-temperature resistance performance of lubricating grease from raw material, by the adding of anti-oxidant anti-c...

Abstract

The invention discloses low-temperature composite calcium sulfonate-based lubricating grease and a preparation method thereof, and belongs to the technical field of lubricating grease, wherein the low-temperature composite calcium sulfonate-based lubricating grease comprises the following raw materials in parts by weight: 35-40 parts of low-temperature base oil, 1.1-1.5 parts of a converting agent, 3.5-5.5 parts of a composite thickening agent, 25-30 parts of ultrahigh-base-number synthetic calcium sulfonate, 3.5-5.5 parts of monoalkyl titanate, 1.5-2.5 parts of micro-nano borate, 1.5-2.0 parts of glacial acetic acid, 1.2-1.8 parts of cyclohexylamine, 0.5-1.5 parts of a high-temperature antioxidant, 1.0-2.0 parts of an oxidation and corrosion-resistant additive and 0.1-3.5 parts of a surfactant. By blending the low-temperature base oil, the low-temperature resistance of the lubricating grease can be improved from the raw materials, and by adding the oxidation and corrosion-resistant additive, the oxidation resistance and the corrosion resistance of the lubricating grease can be improved, so that the service life of the lubricating grease is prolonged, and the lubricating grease issuitable for popularization and application.

Application Domain

Lubricant composition

Technology Topic

CyclohexylaminesActive agent +10

Examples

Experimental program(3)

Example Embodiment

[0023] Example one

[0024] A low-temperature composite calcium sulfonate grease provided by the present invention includes the following raw materials in parts by weight: 35 parts of low-temperature base oil, 1.1 parts of transforming agent, 3.5 parts of composite thickener, and ultra-high base number synthetic calcium sulfonate 25 Parts, 3.5 parts of monoalkyl titanate, 1.5 parts of micro-nano borate, 1.5 parts of glacial acetic acid, 1.2 parts of cyclohexylamine, 0.5 part of high temperature antioxidant, 1.0 part of antioxidant and anticorrosive additive, 0.1 part of surfactant .

[0025] The preparation method of a low-temperature composite calcium sulfonate grease provided by the present invention includes the following steps:

[0026] S1, taking the above-mentioned parts by weight of low-temperature base oil and ultra-high base number synthetic calcium sulfonate, and adding water as a solvent to the reactor for heating and stirring;

[0027] S2: Raise the temperature in the reactor to 60°C and continue to stir for 30 minutes;

[0028] S3, adding the conversion agent and monoalkyl titanate in the above weight parts, and continue to stir for 10 min;

[0029] S4: Add the above-mentioned weight parts of micro-nano borate, glacial acetic acid, cyclohexylamine, high temperature antioxidant, antioxidant and anticorrosive additives and surfactant, raise the temperature to 120°C, and continue to stir for 10 minutes;

[0030] S5, adding the above-mentioned weight parts of the composite thickening agent, stirring evenly, removing the solvent under reduced pressure, and raising the temperature to 160°C for refining;

[0031] S6, after cooling and further cooling, low temperature complex calcium sulfonate grease is obtained.

Example Embodiment

[0032] Example two

[0033] The low-temperature composite calcium sulfonate grease proposed by the present invention includes the following raw materials in parts by weight: 38 parts by weight of low-temperature base oil, 1.2 parts of transforming agent, 4.0 parts of composite thickener, and ultra-high base number synthetic calcium sulfonate 28 Parts, 4.0 parts of monoalkyl titanate, 2.0 parts of micro-nano borate, 1.8 parts of glacial acetic acid, 1.5 parts of cyclohexylamine, 1.2 parts of high temperature antioxidant, 1.5 parts of antioxidant and anticorrosive additives, 1.2 parts of surfactants .

[0034] The preparation method of a low-temperature composite calcium sulfonate grease provided by the present invention includes the following steps:

[0035] S1, taking the above-mentioned parts by weight of low-temperature base oil and ultra-high base number synthetic calcium sulfonate, and adding water as a solvent to the reactor for heating and stirring;

[0036] S2, increase the temperature in the reactor to 60°C, and continue to stir for 40 minutes;

[0037] S3, adding the above-mentioned conversion agent and monoalkyl titanate by weight, and stirring for 15 minutes;

[0038] S4, adding the above-mentioned weight parts of micro-nano borate, glacial acetic acid, cyclohexylamine, high temperature antioxidant, antioxidant and anticorrosive additive and surfactant, raising the temperature to 120°C, and continuing to stir for 15 minutes;

[0039] S5, adding the above-mentioned weight parts of composite thickening agent, stirring uniformly, removing the solvent under reduced pressure, and heating to 170°C for refining;

[0040] S6, after cooling and further cooling, low temperature complex calcium sulfonate grease is obtained.

Example Embodiment

[0041] Example three

[0042] A low-temperature composite calcium sulfonate grease provided by the present invention includes the following raw materials in parts by weight: 40 parts by weight of low-temperature base oil, 1.5 parts of transforming agent, 5.5 parts of composite thickener, and ultra-high base number synthetic calcium sulfonate 30 Parts, 5.5 parts of monoalkyl titanate, 2.5 parts of micro-nano borate, 2.0 parts of glacial acetic acid, 1.8 parts of cyclohexylamine, 1.5 parts of high temperature antioxidant, 2.0 parts of antioxidant and anticorrosive additives, 3.5 parts of surfactants .

[0043] The preparation method of a low-temperature composite calcium sulfonate grease provided by the present invention includes the following steps:

[0044] S1, taking the above-mentioned parts by weight of low-temperature base oil and ultra-high base number synthetic calcium sulfonate, and adding water as a solvent to the reactor for heating and stirring;

[0045] S2: Raise the temperature in the reactor to 60°C and continue to stir for 50 minutes;

[0046] S3, adding the conversion agent and monoalkyl titanate in the above weight parts, and continue stirring for 20 min;

[0047] S4, adding the above-mentioned weight parts of micro-nano borate, glacial acetic acid, cyclohexylamine, high temperature antioxidant, antioxidant and anticorrosive additive and surfactant, raising the temperature to 120°C, and continuing to stir for 20 minutes;

[0048] S5, adding the above-mentioned weight parts of composite thickener, stirring evenly, removing the solvent under reduced pressure, and heating to 180°C for refining;

[0049] S6, after cooling and further cooling, low temperature complex calcium sulfonate grease is obtained.

[0050] Table 1 shows the analysis results of the physical and chemical properties of the finished products prepared in Examples 1, 2, and 3 and the two products currently on the market.

[0051] Test items Example 1 Example 2 Example 3 Comparative example 1 Comparative example 2 experimental method Working cone penetration, 0.1mm 320 322 325 320 320 GB/T269 Extended working penetration (one hundred thousand times, temperature is 0℃), 0.1mm 278 285 290 230 236 GB/T269

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AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

Examples

Example Embodiment

Example Embodiment

Example Embodiment

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Description & Claims & Application Information

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