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Modified complex calcium sulfonate grease and preparation method thereof

A compound calcium sulfonate grease and compound calcium sulfonate technology are applied in lubricating compositions, petroleum industry and other directions, which can solve the problem of poor water drenching resistance and colloidal stability of grease, prolonging production process, reducing production efficiency, etc. problem, to achieve the effect of good shear stability, reduced energy consumption, and good adhesion performance

Active Publication Date: 2018-05-08
埃优诺特种新材料科技(山东)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A three-step reaction method is adopted, namely the conversion of calcium carbonate crystals, calcium saponification, and lithium saponification. Lithium saponification is added on the basis of the normal process, which combines the properties of complex calcium sulfonate and lithium-based grease, but prolongs the production process and increases energy. The consumption reduces the production efficiency, and the grease resistance to water splashing and colloidal stability is still poor

Method used

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  • Modified complex calcium sulfonate grease and preparation method thereof
  • Modified complex calcium sulfonate grease and preparation method thereof
  • Modified complex calcium sulfonate grease and preparation method thereof

Examples

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preparation example Construction

[0036] One embodiment of the present invention further relates to the preparation method of described high-performance modified composite calcium sulfonate grease, which specifically comprises the following steps:

[0037] (1) Add the base oil and calcium sulfonate with high alkalinity into the clean and sealed reaction kettle according to the proportion of the formula, stir and mix, raise the temperature to 70-90°C, slowly add the conversion agent, keep the addition time not less than 15 minutes, stir Mix evenly and keep warm for no less than 20 minutes;

[0038] (2) After the product in step (1) thickens, heat up to 90-100°C, add calcium hydroxide, dibasic acid, lauryl hydroxystearic acid, and lithium hydroxide, stir and mix evenly, and keep warm for no reaction. less than 40 minutes;

[0039] (3) Then heat up to 120-140°C for dehydration, and keep it for no less than 30 minutes; continue to heat up to 200-220°C for refining, keep the temperature for no less than 3 minutes,...

Embodiment 1

[0045]Add 350g of lubricating base oil (150BS (Jiangyin Xinjiyang Petroleum Sales Co., Ltd.): synthetic oil PAO35 American Texas Petrochemical Company) = 2:1), 330g of high-alkaline synthetic calcium sulfonate into the cleaned and sealed reaction kettle, and stir Mix, heat up to 85°C, slowly add 55g of conversion agent (glacial acetic acid, ethanol, water mass ratio is 3:2:1), stir and react for 25 minutes; continue to heat up to 95°C, add 110g of sebacic acid, 80g Lauryl hydroxystearic acid, 25g calcium hydroxide and 10g lithium hydroxide (diluted three times with hot water), react for 45 minutes; heat up to 140°C for dehydration, keep for 35 minutes; continue to heat up to 220°C for refining, and keep warm for 3 minutes Finally, when the temperature is lowered to 110°C, add 5g of octylbutyldiphenylamine and 35g of palmitic acid, and other antioxidants and modifiers are mixed evenly with the lubricating grease, then cool down to 60°C, grind and homogenize to obtain a finished ...

Embodiment 2

[0047] The proportion of each ingredient is as follows:

[0048] Overbasic Calcium Sulfonate: 330g

[0049] Conversion agent (with embodiment 1): 50g

[0050] Calcium hydroxide: 25g

[0051] Lithium hydroxide: 10g

[0052] Sebacic acid: 100g

[0053] Lauryl hydroxystearic acid: 70g

[0054] Palmitic acid: 30g

[0055] Antioxidant: 5g

[0056] Base oil (same as embodiment 1): 380g

[0057] Modified composite calcium sulfonate grease production process is as embodiment 1, and its performance is as shown in table 1

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Abstract

The invention relates to a modified composite calcium sulfonate lubricating grease and a preparation method thereof. The percentage by weight of each component of the composition raw material of modified composite calcium sulfonate grease of the present invention is: (A) high alkali value calcium sulfonate 25-40%wt%; (B) conversion agent 2-7wt%; (C ) calcium hydroxide 1.5-4wt%; (D) lithium hydroxide monohydrate 0.5-1.5wt%; (E) dibasic acid 6-15wt%; (F) lauryl hydroxystearic acid 4-11wt%; (G ) Modifier 1-5wt%; (H) antioxidant 0.3-1wt%; (I) base oil, balance, wherein the sum of each component is 100wt%. The modified composite calcium sulfonate grease has outstanding high temperature performance, good shear stability, excellent water resistance and extreme pressure performance, and good adhesion performance, which can meet the lubrication requirements under harsh conditions such as high temperature, high load, water and dust. . The invention also relates to a preparation method of the modified composite calcium sulfonate lubricating grease.

Description

technical field [0001] The invention belongs to the technical field of lubricant preparation, and in particular relates to a high-performance modified composite calcium sulfonate lubricating grease and a preparation method thereof. Background technique [0002] Grease is a stable solid-liquid colloidal dispersion system formed by uniformly dispersing thickener micelles in a liquid lubricant medium, also known as thickened lubricant. Grease has been familiar to people for a long time and is widely used in the rotating and sliding parts of various machines. Especially in industries such as steel, automobile, military industry, aviation and aerospace, grease is an indispensable and important material. [0003] Composite calcium sulfonate grease is a new type of high temperature multi-effect grease, it has good high temperature resistance, extreme pressure and wear resistance, shear stability, low temperature pumpability, etc. It has broad application prospects in harsh workin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/00C10N30/06C10N50/10
Inventor 吴文志范海粉王瑞兴
Owner 埃优诺特种新材料科技(山东)有限公司
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