A kind of long-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: 2018-07-27
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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  • A kind of long-life high-temperature lubricating grease and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1 A 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 sebacic acid,...

Embodiment 2

[0043] Example 2 A 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] Example 3 A 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 a long-life high-temperature lubricating grease. The mass ratio of each raw material component is: 80-82 parts of base oil, 2.6-2.9 parts of lithium hydroxide, 10-13 parts of acid for saponification, 2.1-2.3 parts of antioxidant, 2.0-2.5 parts of extreme pressure anti-wear agent, 0.5-0.8 parts of anti-rust agent, 0.1-0.5 parts of polyimide, 8-10 parts of water; the invention also provides a preparation method of the above lubricating grease. The high-temperature lubricating grease prepared by the present invention is used for bearings. At 149°C and 1000r / min, the lubrication life is 1600-1700h, and the working penetration is 285-290; the extended working penetration (105 times) is 0.1mm, and the rate of change 3‑5%; dropping point reaches 303‑308 °C, strong extreme pressure and anti-wear properties, strong oxidation resistance, small steel mesh oil separation, small bearing leakage, small water loss, and small evaporation.

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 Patents(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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