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Low temperature resistant lubricating grease and preparation method thereof

A technology of lubricating grease and low temperature resistance, applied in the field of low temperature resistant lubricating grease and its preparation, can solve the problems of increasing the motion resistance between friction parts of the lubricating part, increasing wear, poor flow performance, etc., achieving strong colloidal stability and reducing wear and tear. and oxidation, the effect of improving stability

Inactive Publication Date: 2019-05-31
安徽澳润新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Grease has many advantages over lubricating oil and has been widely used, especially in some severe cold climates in cold regions, the working environment temperature of mining machinery is as low as -40 ~ -20 ℃, while the viscosity of grease increases with the The temperature drops and increases, which leads to worse fluidity, and the friction surface of mining machinery lubricates to form semi-dry friction or even dry friction, which increases the movement resistance between the friction parts of the lubricated part and makes it wear more

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The invention proposes a low-temperature resistant lubricating grease, which comprises the following raw materials: 7.5kg of base oil PAO, 2kg of urea-based thickener, 0.9kg of anti-wear additive, 0.9kg of anti-oxidation additive, and 2.6kg of viscosity improver.

[0031] The present invention proposes a kind of low temperature resistant lubricating grease, comprising the following preparation method steps,

[0032] S1, add three-fifths of 7.5kg of base oil PAO into the saponification kettle, and when the temperature rises to 85°C, add 2kg of urea-based thickener into the saponification kettle, stir for 1.5h, and the urea-based thickener by C 8 -C 24 It is formed by the reaction of organic amine and diisocyanate, and the stirring speed is kept at 200-300r / min;

[0033] S2, after stirring for 1.5h, add 0.9kg of anti-wear additives, 0.9kg of anti-oxidation additives and 0.6kg of oxidized paraffin to the saponification kettle at the same time, heat up to 130°C, keep warm...

Embodiment 2

[0037] The invention proposes a low-temperature resistant lubricating grease, which comprises the following raw materials: 8kg of base oil PAO, 1.5kg of urea-based thickener, 0.9kg of anti-wear additive, 0.9kg of anti-oxidation additive, and 2.6kg of viscosity improver.

[0038] The present invention proposes a kind of low temperature resistant lubricating grease, comprising the following preparation method steps,

[0039] S1, add three-fifths of 8kg of base oil PAO into the saponification kettle, and when the temperature rises to 85°C, add 1.5kg of urea-based thickener into the saponification kettle, stir for 1.5h, and the urea-based thickener by C 8 -C 24 It is formed by the reaction of organic amine and diisocyanate, and the stirring speed is kept at 200-300r / min;

[0040] S2, after stirring for 1.5h, add 0.9kg of anti-wear additives, 0.9kg of anti-oxidation additives and 0.6kg of oxidized paraffin to the saponification kettle at the same time, heat up to 130°C, keep warm...

Embodiment 3

[0044] The invention proposes a low-temperature resistant lubricating grease, which comprises the following raw materials: 8.5kg of base oil PAO, 1kg of urea-based thickener, 0.9kg of anti-wear additive, 0.9kg of anti-oxidation additive, and 2.6kg of viscosity improver.

[0045] The present invention proposes a kind of low temperature resistant lubricating grease, comprising the following preparation method steps,

[0046] S1, add three-fifths of 8.5kg of base oil PAO into the saponification kettle, and when the temperature rises to 85°C, add 1kg of urea-based thickener into the saponification kettle, stir for 1.5h, and the urea-based thickener by C 8 -C 24 It is formed by the reaction of organic amine and diisocyanate, and the stirring speed is kept at 200-300r / min;

[0047] S2, after stirring for 1.5h, add 0.9kg of anti-wear additives, 0.9kg of anti-oxidation additives and 0.6kg of oxidized paraffin to the saponification kettle at the same time, heat up to 130°C, keep warm...

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PUM

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Abstract

The invention discloses low temperature resistant lubricating grease and a preparation method thereof. The low temperature resistant lubricating grease is prepared from, by weight, 75-92 parts of baseoil and 10-25 parts of a thickening agent, and the appropriate proportion of anti-wear additives, anti-oxidation additives and wear reducing additives are added to according to the total amount of the grease. By the arrangement, wear and oxidation on the metal surface during use of the lubricating grease are reduced, the stability and colloid stability of the grease at low temperature are improved, and normal operation can be achieved at low temperatures.

Description

technical field [0001] The invention relates to the technical field of lubricating grease, more specifically, it relates to a low-temperature resistant lubricating grease and a preparation method thereof. Background technique [0002] Grease is a thick grease-like semi-solid, which is used in the friction parts of machinery to lubricate and seal. It is also used on metal surfaces to fill gaps and prevent rust. It is mainly composed of mineral oil (or synthetic lubricating oil) and thick Prepared with chemicals. [0003] Grease has many advantages over lubricating oil and has been widely used, especially in some severe cold climates in cold regions, the working environment temperature of mining machinery is as low as -40 ~ -20 ℃, while the viscosity of grease increases with the The temperature drops and increases, which leads to worse fluidity, and the friction surface of mining machinery lubricated forms semi-dry friction or even dry friction, which increases the movement r...

Claims

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Application Information

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IPC IPC(8): C10M169/00C10N30/06C10N30/08C10N30/10C10N50/10
Inventor 任海栋曹文
Owner 安徽澳润新材料有限公司