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Protective grease, and its use and preparing method

A technology of lubricating grease and aluminum stearate, used in lubricating compositions, base materials, thickeners, etc., can solve problems such as poor low temperature performance and inability to use outdoors

Active Publication Date: 2007-06-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

3# marine grease is made of aluminum stearate soap thickened high-viscosity mineral lubricating oil, and a large amount of asphalt is added. It is black in appearance, very viscous, and has good waterproof performance, but poor low temperature performance. The similar viscosity at 10°C is 1900Pa .s, cannot be used outdoors in winter
[0006] U.S. Patent No. 4,075,112 disclosed lubricating grease composition is: thickener is aluminum stearate soap, and base oil is mineral lubricating oil, wherein has added 0.2% polyisobutylene with molecular weight of 100,000 and 25-98% of molecular weight is 300 -2,500 polyisobutylene, but its low temperature performance is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0016] The preparation method of protective lubricating grease of the present invention comprises:

[0017] Heat aluminum stearate and base oil accounting for 60-80% of the total base oil, preferably 67-72%, to 175-185°C, preferably to 180°C, then add polyisobutylene and stir evenly; after stopping heating, Add the rest of the base oil, stir evenly, then let it stand for cooling, and grind it into a finished product after the temperature drops to 100°C.

[0018] The lubricating grease of the invention has good water erosion resistance and good low temperature performance. Water spray test results wash away weight <2.0%; similar viscosity at 0°C is not higher than 1000Pa.s.

[0019] In view of the fact that the grease of the present invention has good water erosion resistance and good low-temperature performance, the grease can be used to protect exposed parts of vehicles and outdoor equipment, such as aircraft, weapons, ships and material parts in the construction industry, s...

Embodiment 1

[0023] With 120g aluminum stearate soap and 470g polyalphaolefin oil (100 ℃ viscosity 40mm 2 / s) into the kettle, stir and heat, when the temperature rises to 180°C, add 300g of polyisobutylene with a molecular weight of 2300, stir evenly, stop heating, add 210g of polyalphaolefin oil (viscosity 40mm at 100°C 2 / s), stir evenly, let it cool down, and grind it into lubricating grease after the temperature drops to 100°C.

[0024] The obtained products were tested by GB / T269, GB / T4929, GB / T7325, GB / T5018, SH / T0643, SH / T0048, and the results are shown in Table 1.

Embodiment 2

[0026] With 90g aluminum stearate soap and 357g polyalphaolefin oil (100 ℃ viscosity 50mm 2 / s) into the kettle, stir and heat, when the temperature rises to 180°C, add 400g of polyisobutylene with a molecular weight of 2000, stir evenly, stop heating, add 153g of polyalphaolefin oil (viscosity 50mm at 100°C 2 / s), stir evenly, let it cool down, and grind it into lubricating grease after the temperature drops to 100°C.

[0027] The physical and chemical properties of the product are shown in Table 1.

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Abstract

The invention provides preservative lubricating oil with the good resistance of low temperature and the adhesive of the base material. It includes: 35-82% of PAO with the viscidity 25-55 sq mm / s in 100 degree C, 8-15% aluminum stearate soap and 10-50% polyisobutylene with molecular weight of 2, 000-2,500. The invention also provides the preparing method and the application as the repellent.

Description

technical field [0001] The invention relates to a protective lubricating grease, its application and preparation method. Background technique [0002] Regardless of whether the aircraft is parked at the airport or launched in the air, it is possible to encounter rainwater erosion; similarly, other means of transportation and outdoor equipment may also be corroded due to rainwater intrusion. Protective grease is an example of a product used to protect exposed parts from rain and corrosion. [0003] In the prior art, in terms of protective grease for aircraft, 3# marine grease is commonly used. 3# marine grease is made of aluminum stearate soap thickened high-viscosity mineral lubricating oil, and a large amount of asphalt is added. It is black in appearance, very viscous, and has good waterproof performance, but poor low temperature performance. The similar viscosity at 10°C is 1900Pa .s, cannot be used outdoors in winter. In view of the fact that the protective grease is ...

Claims

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Application Information

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IPC IPC(8): C10M107/02C10M117/00C10M177/00C10N30/00
Inventor 李茂森刘显秋王磊
Owner CHINA PETROLEUM & CHEM CORP
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