A high-performance lithium complex grease with improved dropping point and additive sensitivity and its preparation process

A base grease, complex lithium-based technology, applied in lubricating compositions, petroleum industry and other directions, can solve the problems of poor lubricating grease sensitivity, easy to drip oil, weakening, etc., to inhibit catalytic oxidation, prolong service life and reduce accumulated temperature Effect

Active Publication Date: 2021-07-13
HARBIN INST OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems that the grease is easy to drop oil at high temperature, the additives are not easy to be uniformly dispersed in the grease, and the susceptibility in the grease is poor, the present invention provides a high-performance lithium composite grease with improved dropping point and additive susceptibility and Its preparation process
The present invention adopts a graded saponification process, adding raw materials in batches to realize sufficient mixing and reaction of raw materials, and adding a suitable bridging agent in a key step to solve the problem that the action force of oil soap in lubricating grease is weakened under high temperature conditions and the dispersion of functional additives is not good. Uniformity, poor sensitivity, etc., so as to improve the performance of grease

Method used

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  • A high-performance lithium complex grease with improved dropping point and additive sensitivity and its preparation process
  • A high-performance lithium complex grease with improved dropping point and additive sensitivity and its preparation process
  • A high-performance lithium complex grease with improved dropping point and additive sensitivity and its preparation process

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Experimental program
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Effect test

Embodiment 1

[0031] In this embodiment, high-performance composite lithium-based grease in which the droppoint and the additive sensibility is improved, including the following components: base oil (two different viscosity mineral lubricants 400Sn, 150Bs mixtures, the two quality Comparison is 1: 1) 310 copies, C 12 25 parts of stearic acid, 12 partial decanoate, 12 parts of lithium hydroxide, 14 parts of saponated water, 11 parts of sebacalic acid, 1.1 parts of diphenyrene, 89 cases of quenched oil, zinc dialkyl dithiophosphate 6 copies of dialkyl dithiocarcone molybdenum.

[0032] The preparation steps of the above high-performance composite lithium-based grease are as follows:

[0033] (1) First-order saponification: 215 basic oils and 25 copies 12 Steaic acid was added to the open reactor was heated at 85 ° C for 30 min, and the stirring rate was 110 r / min, c 12 After all of the stearic acid dissolved, 6 parts of lithium hydroxide, 7 disadvantaged water were added, warmed to 95 ° C, and ...

Embodiment 2

[0043] In this embodiment, high-performance composite lithium-based grease in which the droppoint and the additive sensibility is improved, including the following components: base oil (two different viscosity mineral lubricants 400Sn, 150Bs mixtures, the two quality The ratio is 1: 1) 320 parts, C12 stearic acid 27 parts, 14 parts of sebacate, 15 parts of lithium hydroxide, 14 pieces of saponate, 13 parts of sebacalic acid, 1.4 parts of diphenyrene, emergency oil 86 Part of zinc, dialkyl dithiophosphate, 4 parts of diethalkyl dithiocarbonate.

[0044] The preparation steps of the above high-performance composite lithium-based grease are as follows:

[0045] (1) First-order saponification: 220 parts of the base oil and 27 parts of C12 stearic acid were added 85 ° C for 15 min, and the stirring rate was 110 r / min, and the C12 stearic acid was dissolved, and 7 parts of hydrogen was added. Lithium oxide, 10 disadvantaged water, warmed to 95 ° C, increase the stirring rate to 130 r ...

Embodiment 3

[0058] In this embodiment, high-performance composite lithium-based grease in the increasing drop point and additive sensitivity is based on weight parts, including the following components: base oil (polyether and polysiloxane mixtures, the two mass ratios 1: 1) 315 parts, 30 parts of 12-hydroxy dialkyl acid, 15 butyrate acid, 13 parts of lithium hydroxide, 12 parts of saponified water, 11 serothellic acid diethylhexyl, 2,6-second uncle 1.0 parts of toluene phenol, 92 parts of acute cold oil, 12 parts of dialkyl dithiophosphate.

[0059] The preparation steps of the above high-performance composite lithium-based grease are as follows:

[0060] (1) First-order saponification: 210 parts of the foundation oil and 30 parts of 12-hydroxy dialkyl acid were added 85 ° C for 15 min at 85 ° C, the stirring rate was 100 r / min, 12-hydroxy dialkyl acid After all dissolved, 8 parts of lithium hydroxide, 8 disadvantaged water were added, and the temperature was raised to 90 ° C, and the stir...

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Abstract

The invention discloses a high-performance composite lithium-based lubricating grease with improved dropping point and additive sensitivity and a preparation process thereof. The high-performance composite lithium-based lubricating grease comprises the following components in parts by weight: base oil 307-325 25-30 parts of fatty acid, 12-15 parts of binary organic acid, 12-16 parts of lithium hydroxide, 10-20 parts of saponified water, 10-13 parts of bridging agent, 85-93 parts of quenching oil, 0.8 parts of antioxidant ~1.5, 10~15 parts of organic friction reducer. The present invention adopts a graded saponification process, adding raw materials in batches to realize sufficient mixing and reaction of raw materials, and adding a suitable bridging agent in a key step to solve the problem that the action force of oil soap in lubricating grease is weakened under high temperature conditions and the dispersion of functional additives is not good. Uniformity, poor susceptibility and other issues, thereby improving the performance of the grease.

Description

Technical field [0001] The present invention relates to a high-performance composite lithium-based grease and a preparation method thereof, in particular to high performance composite lithium-based grease and preparation methods thereof in increasing a droppoint and additive sensitivity. Background technique [0002] A grease is used between the friction sub-friction into the friction in the grease molecule, and is a simple and effective way to reduce the wear of the frictional side, reduce the energy consumption and protection devices. At present, the patent report is unstable in the actual use of the grease in the grease, and how the additive is subjected to a high-temperature, and how to achieve higher utilization in the grease. Inventive content [0003] In order to solve the problem that the grease is easily dripped at high temperatures, the additive is not easily dispersed in the grease and is a problem of poorness in the grease, and the present invention provides a high p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/04C10M177/00C10N50/10C10N30/06C10N30/10
CPCC10M169/045C10M177/00C10M2203/1025C10M2207/026C10M2207/123C10M2207/126C10M2207/127C10M2207/128C10M2207/282C10M2215/064C10M2219/068C10M2223/045C10N2030/06C10N2030/10C10N2050/10C10N2010/12C10N2020/02C10N2010/02C10N2010/04
Inventor 刘宇艳王慧张颖周忠诚
Owner HARBIN INST OF TECH
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