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Lithium-based lubricating grease composition and preparation method thereof

A lithium-based grease and composition technology, applied in the field of grease, can solve the problems of dark color, opaque appearance, rare grease appearance, color and low noise, etc.

Inactive Publication Date: 2020-05-05
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] Due to the shortcomings of conventional industrial lithium-based greases such as opaque appearance, darker color, and loud noise, its use in precision instruments, meters, power tools, household appliances, robots, etc. is greatly restricted.
[0004] However, the existing research mainly focuses on improving the lubricating effect of lubricating grease, and there are few research reports on the appearance, color and low-noise performance of lubricating grease.

Method used

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  • Lithium-based lubricating grease composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A white transparent low-noise lithium-based grease composition, consisting of the following components in parts by weight: N4006 rubber filler oil produced by Karamay Petrochemical Company (40°C kinematic viscosity 54mm 2 / s) 87kg, lauryl hydroxystearic acid 6kg, stearic acid 4.5kg, naphthenic acid 0.3kg, alkyl salicylic acid 0.2kg, lithium hydroxide 1.7kg and N-phenyl-ɑ-naphthylamine 0.3kg .

[0031] The preparation method comprises the following steps:

[0032] (1) Stir 40kg of N4006 rubber filler oil and raise the temperature to 60°C;

[0033] (2) Then add lauryl hydroxystearic acid, stearic acid, naphthenic acid, and alkyl salicylic acid, mix well, stir for 15 minutes, and then carry out saponification reaction with lithium hydroxide aqueous solution at a temperature of 85°C and keep for 90 minutes;

[0034] (3) Heat up to 120°C for dehydration and keep for 60 minutes; further heat up to 205°C and keep for 5 minutes;

[0035] (4) Add the remaining N4006 rubber fi...

Embodiment 2

[0040] A white transparent low-noise lithium-based grease composition, consisting of the following components in parts by weight: N4010 rubber filler oil produced by Liaoning Haihua Petrochemical Company (40°C kinematic viscosity 167mm 2 / s) 85kg, lauryl hydroxystearic acid 7kg, stearic acid 5kg, naphthenic acid 0.3kg, alkyl salicylic acid 0.4kg, lithium hydroxide 2kg and diisooctyl diphenylamine 0.3kg.

[0041] The preparation method comprises the following steps:

[0042] (1) Stir 42kg of N4010 rubber filling oil and raise the temperature to 65°C;

[0043] (2) Then add lauryl hydroxystearic acid, stearic acid, naphthenic acid, and alkyl salicylic acid, mix well, stir for 15 minutes, and then carry out saponification reaction with lithium hydroxide aqueous solution at a temperature of 85°C and keep for 80 minutes;

[0044] (3) Heating and dehydration, 125°C, keep for 60min; further heat up to 200°C, keep for 10min;

[0045] (4) Add remaining N4010 rubber filling oil to the ...

Embodiment 3

[0050] A white transparent low-noise lithium-based grease composition, consisting of the following components in parts by weight: N4016 rubber filler oil produced by Panjin North Asphalt Company (40°C kinematic viscosity 322mm 2 / s) 89.6kg, lauryl hydroxystearic acid 5kg, stearic acid 3.2kg, naphthenic acid 0.3kg, alkyl salicylic acid 0.3kg, lithium hydroxide 1.4kg and diphenylamine 0.2kg.

[0051] The preparation method comprises the following steps:

[0052] (1) Stir 44kg of N4016 rubber filling oil and heat up to 70°C;

[0053] (2) Then add lauryl hydroxystearic acid, stearic acid, naphthenic acid, and alkyl salicylic acid, mix well, stir for 15 minutes, and then carry out saponification reaction with lithium hydroxide aqueous solution at a temperature of 95°C and keep for 90 minutes;

[0054] (3) Heating and dehydration, 130°C, keep for 60min; further heat up to 200°C, keep for 5min;

[0055] (4) Add remaining N4016 rubber filling oil to the reaction system, circulate, s...

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Abstract

The invention discloses a lithium-based lubricating grease composition and a preparation method thereof, and belongs to the technical field of lubricating grease. The composition is specifically composed of the following components in parts by weight: 83.5-90.0 parts of base oil, 5.0-7.5 parts of dodecahydroxyl stearic acid, 3.0-5.5 parts of stearic acid, 0.3-0.5 parts of naphthenic acid, 0.2-0.5parts of alkyl salicylic acid, 1.3-2.1 parts of lithium hydroxide and 0.2-0.4 parts of an antioxidant. The invention also provides a preparation method of the lithium-based lubricating grease composition. The prepared lithium-based lubricating grease is white and transparent in appearance, has the characteristic of low noise, and can meet the lubricating requirements of precise instruments, meters, electric tools, household appliances and other equipment.

Description

Technical field [0001] The present invention relates to the technical field of grease, and more specifically to a lithium-based grease composition and a preparation method thereof. Background technique [0002] Grease is a solid or semi-solid lubricant, generally composed of base oil, thickener and additives. It can adhere well to the surface of friction parts of mechanical equipment, thereby reducing friction and wear. Lithium-based grease is currently the most widely used grease, accounting for about 70% of my country's grease production. [0003] Due to the shortcomings of conventional industrial lithium-based greases such as opaque appearance, dark color, and high noise, their use in precision instruments, meters, power tools, household appliances, robots, etc. is greatly restricted. [0004] The existing research mainly focuses on improving the lubrication effect of grease, and there are few research reports on the appearance, color and low-noise performance of grease....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10M177/00C10N50/10C10N20/02
CPCC10M169/04C10M177/00C10M2201/062C10M2203/1065C10M2207/126C10M2207/128C10M2207/144C10M2207/16C10M2215/064C10M2215/065
Inventor 刘仁德朱杰赵志强
Owner 杭州新港润滑科技有限公司
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