Long-service-life high-temperature lubricating grease and preparation method thereof

A lubricating grease and long-life technology, which is applied in the field of long-life high-temperature lubricating grease and its preparation, can solve the problems of bearing leakage, water leakage, and large evaporation, the drop point cannot be further improved, and the rate of change of working cone penetration is large and other problems, to achieve the effects of small oil separation, extended change rate, and small water loss.

Active Publication Date: 2016-02-03
杭州新港润滑科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] (1) The lubrication life is short, and the rate of change of cone penetration is large when the work is extended;
[0004] (2) The dropping point cannot be further improved, and it is difficult to adapt to higher operating temperatures;
[0005] (3) Poor extreme pressure and wear resistance;
[0006] (4) General anti-oxidation performance;
[0007] (5) Steel mesh oil separation, bearing leakage, water leakage and evaporation are all relatively large

Method used

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  • Long-service-life high-temperature lubricating grease and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1 A kind of long-life high-temperature lubricating grease

[0034] The high temperature lubricating grease, in parts by weight, each raw material includes: 80 parts of base oil, 2.6 parts of lithium hydroxide, 10 parts of acid for saponification, 2.1 parts of antioxidant, 2.0 parts of extreme pressure antiwear agent, 0.5 part of rust inhibitor , 0.1 part of polyimide, 8 parts of water.

[0035] The base oil is polyalphaolefin base oil and mineral oil, and the mass ratio is 1:3.

[0036] The polyalphaolefin base oil, the model is PAO8, and the kinematic viscosity at 100°C is 7.8mm 2 / s, the kinematic viscosity at 40°C is 46.6mm 2 / s, the viscosity index is 138, and the density at 20°C is 0.833g / cm 3 , the pour point is -57°C, and the refractive index is 1.463.

[0037] The mineral oil has a kinematic viscosity of 8mm at 100°C 2 / s, the viscosity index is 90, the flash point is 290°C, and the pour point is -11.

[0038] The saponification acid includes s...

Embodiment 2

[0043] Embodiment 2 A kind of long-life high-temperature lubricating grease

[0044] Adopt the raw material described in embodiment 1, only change the raw material composition of lubricating grease, change into:

[0045] The high-temperature lubricating grease, in parts by weight, each raw material includes: 81 parts of base oil, 2.7 parts of lithium hydroxide, 12 parts of acid for saponification, 2.2 parts of antioxidant, 2.3 parts of extreme pressure antiwear agent, 0.6 part of rust inhibitor , 0.4 parts of polyimide, and 9 parts of water.

Embodiment 3

[0046] Embodiment 3 A kind of long-life high-temperature lubricating grease

[0047] Adopt the raw material described in embodiment 1, only change the raw material composition of lubricating grease, change into:

[0048] The high-temperature lubricating grease, in parts by weight, each raw material includes: 82 parts of base oil, 2.9 parts of lithium hydroxide, 13 parts of acid for saponification, 2.3 parts of antioxidant, 2.5 parts of extreme pressure antiwear agent, 0.8 part of rust inhibitor , 0.5 parts of polyimide, and 10 parts of water.

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Abstract

The invention provides long-service-life high-temperature lubricating grease which is prepared from the following raw materials in parts by mass: 80-82 parts of base oil, 2.6-2.9 parts of lithium hydroxide, 10-13 parts of saponification acid, 2.1-2.3 parts of an antioxidant, 2.0-2.5 parts of an extreme pressure anti-wear reagent, 0.5-0.8 part of an anti-rusting agent, 0.1-0.5 part of polyimide and 8-10 parts of water. The invention further provides a preparation method of the lubricating grease. The long-service-life high-temperature lubricating grease provided by the invention is used on bearings, the lubrication service life at 149 DEG C at the rotation speed of 1000r/minute is 1600-1700 hours, the working penetration degree is 285-290, the working penetration degree is 0.1mm after 105-time reciprocation movement, the change rate is 3-5%, the dropping point is up to 303-308 DEG C, and the lubricating grease is good in pressure and abrasion resistance, good in oxidation resistance, slight in steel net oil separation, small in bearing loss, small in washout loss and small in evaporation amount.

Description

technical field [0001] The invention belongs to the technical field of organic synthesis, and in particular relates to a long-life high-temperature lubricating grease and a preparation method thereof. Background technique [0002] As a commonly used lubricating medium, grease has better stability and anti-oxidation properties than thin oil lubricants, and is suitable for sports machinery with high motion precision, high load-bearing capacity requirements, high speed and long oil change intervals. ;High-temperature grease has excellent comprehensive performance, so it has strong general-purpose performance. It has been widely used in friction of various large-scale heavy-duty trucks, high-speed cars, large-scale electric motors, rubber, cement industries, etc. parts, but the existing high temperature grease still has the following deficiencies: [0003] (1) The lubrication life is short, and the rate of change of cone penetration is large when the work is extended; [0004]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10N30/06C10N30/10C10N30/02C10N40/02
Inventor 刘凤霞卢建祥
Owner 杭州新港润滑科技有限公司
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