Special lubricating grease for ships and warships and preparation method of lubricating grease

A kind of lubricating grease, a special technology, applied in the field of lubricating grease, can solve problems such as insufficient adhesion, adverse effects on the normal operation of ship machinery, and poor seawater corrosion resistance

Active Publication Date: 2020-06-16
山东耘勃环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing marine greases have poor seawater corrosion resistance and insufficient adhesion, which adversely affects the normal operation of marine machinery.

Method used

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  • Special lubricating grease for ships and warships and preparation method of lubricating grease
  • Special lubricating grease for ships and warships and preparation method of lubricating grease
  • Special lubricating grease for ships and warships and preparation method of lubricating grease

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preparation example Construction

[0038] The present invention provides the preparation method of special lubricating grease for ships described in the above scheme, comprising the following steps:

[0039] (1) first mixing high-viscosity mineral oil and aluminum distearate at 150-160°C to obtain the first mixture;

[0040] (2) performing second mixing of the first mixture and solid petroleum pitch at 185-195°C to obtain a second mixture;

[0041] (3) performing a third mixing of the second mixture with the antioxidant and antirust agent at 90-100° C. to obtain the special grease for ships.

[0042] In the present invention, high-viscosity mineral oil and aluminum distearate are first mixed under the condition of 150-160 DEG C to obtain the first mixed material. In a specific embodiment of the present invention, the aluminum distearate is hydrolyzed after saponification reaction of stearic acid and aluminum isopropoxide according to the mass ratio of 8-14:3-6 in the process of preparing the first mixture Mad...

Embodiment 1

[0053] Add 190kg of high-viscosity mineral oil 150BS, (viscosity of 30cst at 100°C, pour point of -15°C) and 30kg of aluminum isopropoxide into the saponification kettle to fully dissolve, then slowly add 66kg of tertiary stearic acid at 90±5°C saponification at high temperature for 1 hour to obtain a saponification reaction solution;

[0054] Add 20kg of water to the saponification reaction solution and hydrolyze at 130°C for 25±5 minutes until the isopropanol is completely replaced, and keep it warm for 10 minutes to obtain a mixture of aluminum distearate and mineral oil;

[0055] Heat the mixture of aluminum distearate and mineral oil to 160±10°C, then add 190kg of mineral oil to thicken to obtain the first mixture;

[0056] Raise the temperature of the first mixture to 190°C, add 66kg of solid petroleum pitch (the softening point is 85°C, the penetration is 11), and stir for 10 minutes to obtain the second mixture;

[0057] Pass the second mixture through a 120-mesh filt...

Embodiment 2

[0059] Add 185kg of high-viscosity mineral oil 150BS (viscosity of 30cst at 100°C, pour point of -15°C) and 25.3kg of aluminum isopropoxide into the saponification kettle to fully dissolve, then slowly add 56kg of tertiary stearic acid at 95±5°C saponification at high temperature for 1 hour to obtain a saponification reaction solution;

[0060] Add 18kg of water to the saponification reaction solution and hydrolyze it at 130°C for 25±5 minutes until the isopropanol is completely replaced, and keep it warm for 10 minutes to obtain a mixture of aluminum distearate and mineral oil;

[0061] Heat the mixture of aluminum distearate and mineral oil to 160±10°C, then add 185kg of mineral oil to thicken to obtain the first mixture;

[0062] Raise the temperature of the first mixture to 190°C, add 61 kg of solid petroleum pitch (the softening point is 85°C, the penetration is 11), and stir for 10 minutes to obtain the second mixture;

[0063] Pass the second mixture through a 120-mesh...

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Abstract

The invention provides special lubricating grease for ships and warships and a preparation method of the lubricating grease, and relates to the technical field of lubricating grease. The special lubricating grease for the ships and warships provided by the invention comprises the following components in parts by mass: 70-80 parts of high-viscosity mineral oil, 10-18 parts of aluminum distearate, 10-20 parts of solid petroleum asphalt, 0.3-3 parts of an antirust agent, and 0.3-0.5 part of an antioxidant; the viscosity of the high-viscosity mineral oil at the temperature of 100 DEG C is 16-32 cst, and the pour point is less than -5 DEG C; the dropping point of the special lubricating grease for the ships and warships is greater than or equal to 110 DEG C. Aluminum distearate with excellent water resistance and corrosion resistance is used as a thickening agent to thicken high-viscosity mineral oil, and the high-viscosity petroleum asphalt is added and matched with the antirust agent andthe antioxidant, so that the special lubricating grease for the ships and warships has excellent seawater corrosion resistance and strong adhesive force. The invention also provides a preparation method of the special lubricating grease for the ships and warships, and the preparation method is simple in process and easy for large-scale production.

Description

technical field [0001] The invention relates to the technical field of lubricating grease, in particular to a special lubricating grease for ships and a preparation method thereof. Background technique [0002] Grease is used as a lubricating material in many parts of a ship. In addition to the general characteristics of lubricating grease, marine grease must also be a kind of grease that is particularly resistant to seawater, has good corrosion resistance, strong adhesion, and can resist the centrifugal force of mechanical operation. [0003] At present, there are mainly barium-based greases, aluminum-based greases, composite aluminum-based greases, and lithium-based greases for ships. However, the existing lubricating grease for ships has poor seawater corrosion resistance and insufficient adhesion, which has adverse effects on the normal operation of ship machinery. Contents of the invention [0004] In view of this, the object of the present invention is to provide a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/00C10M177/00C10N50/10C10N30/12C10N30/08C10N20/02C10N10/06
CPCC10M169/00C10M177/00C10M2203/1006C10M2207/1265C10M2203/10C10M2215/064C10M2215/223
Inventor 刘慎峰刘慎岷
Owner 山东耘勃环境科技有限公司
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