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Preparation method of modified expanded graphite plant-based lubricating grease

An expanded graphite, plant-based technology, used in lubricating compositions, petroleum industry, etc., can solve the problems of poor thermal conductivity, poor lubricity, and poor high temperature resistance, and achieve the effect of easy transfer and improved lubricity

Inactive Publication Date: 2018-07-20
陈毅忠
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention: in view of the poor high temperature resistance, poor lubricity and poor thermal conductivity of the current common lubricating paste, if the lubricating paste penetrates into the soil and water, even at a highly diluted concentration, the lubricating paste is also harmful to the environment. And the degradation of mineral oil-based lubricating paste is very slow, the biodegradation rate is low, and the defects that cannot meet market requirements provide a preparation method of modified expanded graphite plant-based lubricating paste

Method used

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  • Preparation method of modified expanded graphite plant-based lubricating grease

Examples

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Effect test

example 1

[0021] Mix concentrated sulfuric acid solution with a mass fraction of 85% and acetic anhydride at a volume ratio of 4:1 and stir for 4 minutes to obtain a mixed solution, then weigh 32 g of graphite and put it into a grinder for 12 minutes to obtain graphite powder. : 3:1 Mix and stir graphite powder, mixed liquid and potassium permanganate for 35 minutes to obtain the reactant, put the reactant in a high-temperature furnace, expand for 1 hour at a temperature of 950°C, cool and discharge the material, and obtain the modified Expanded graphite; Weigh 0.2kg of soybeans and 0.1kg of peanut seeds, mix them in a beaker with 2L of deionized water, stir and soak for 35min, take out the soybeans and peanut seeds, and dry them in a constant temperature drying oven at 65°C After 16 minutes, the dried product was obtained, and then the dried product was ground in a pulverizer for 1 hour to obtain an oily product; continue to mix the oily product and cyclohexane at a material-to-liquid r...

example 2

[0023] Mix concentrated sulfuric acid solution with a mass fraction of 85% and acetic anhydride at a volume ratio of 4:1 and stir for 5 minutes to obtain a mixed solution, then weigh 36 g of graphite and put it into a grinder to grind for 13 minutes to obtain graphite powder. : 3:1 Mix and stir graphite powder, mixed solution and potassium permanganate for 40 minutes to obtain the reactant, put the reactant in a high-temperature furnace, expand for 2 hours at a temperature of 975°C, cool and discharge the material, and obtain the modified Expandable graphite; Weigh 0.3kg of soybeans and 0.1kg of peanut seeds, mix them in a beaker with 3L of deionized water, stir and soak for 40min, take out the soybeans and peanut seeds, and dry them in a constant temperature drying oven at a temperature of 70°C After 18 minutes, the dried product was obtained, and then the dried product was put into a pulverizer and ground for 1.5 hours to obtain an oily product; continue to mix the oily produ...

example 3

[0025] Mix and stir concentrated sulfuric acid solution with a mass fraction of 85% and acetic anhydride at a volume ratio of 4:1 for 6 minutes to obtain a mixed solution, then weigh 40 g of graphite and put it into a grinder to grind for 15 minutes to obtain graphite powder with a mass ratio of 7 : 3:1 Mix and stir graphite powder, mixed solution and potassium permanganate for 45 minutes to obtain the reactant, put the reactant in a high-temperature furnace, expand for 3 hours at a temperature of 1000°C, cool and discharge the material, and obtain the modified Expandable graphite; Weigh 0.4kg of soybeans and 0.2kg of peanut seeds, mix them in a beaker with 4L of deionized water, stir and soak for 45min, take out the soybeans and peanut seeds, and dry them in a constant temperature drying oven at a temperature of 75°C After 20 minutes, the dried product was obtained, and then the dried product was put into a pulverizer and ground for 2 hours to obtain an oily product; continue ...

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Abstract

The invention relates to the technical field of preparation of lubricating agents, and in particular relates to a preparation method of modified expanded graphite plant-based lubricating grease. According to the preparation method provided by the invention, mixed plant oil is used as lubricating basic oil, modified expanded graphite and pork liver are used as modifying agents, ethylene glycol, melamine and the like are added to prepare the modified expanded graphite plant-based lubricating grease; firstly, the plant oil is extracted from soybeans and peanuts, and fatty acid in the plant oil forms a fatty soap adsorption film on the surface of metal; the adsorption film has a wear-resisting effect; graphite powder is modified by utilizing a concentrated sulfuric acid solution, and is blended with acetic anhydride and potassium permanganate to obtain expanded graphite; then the pork livers and the melamine are continually added, and one layer of chemical protection film is formed on thesurface coated with the lubricating grease by utilizing elements including nitrogen, phosphorus, sulfur and the like in the pork livers and the melamine, so that a protection effect on the lubricatinggrease is realized; biological oil is used for replacing mineral oil, so that damages to human bodies and environment are not caused; the protection of resources is facilitated, and the lubricating grease has a wide application prospect.

Description

technical field [0001] The invention relates to the technical field of lubricant preparation, in particular to a preparation method of modified expanded graphite plant-based lubricating paste. Background technique [0002] Lubricating paste is lubricating grease, which is mainly used for lubrication and protection of friction pairs. Lubricating paste is a kind of lubricating material needed to reduce the friction and wear of equipment in the state of centrifugal force generated when the equipment is running. Compared with lubricating oil, it is more widely used to lubricate the lubricating parts of various industrial machinery because of its easier use. [0003] With the continuous development of mechanization, people have higher and higher requirements for the service life of machinery. In order to meet the miniaturization and longevity of mechanical equipment, people also put forward higher requirements for the friction performance and wear resistance of lubricating paste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10N30/06
CPCC10M169/045C10M2201/14C10M2207/022C10M2207/401C10M2215/222C10N2030/06C10N2030/56C10N2030/64
Inventor 陈毅忠杨明忠张建初
Owner 陈毅忠
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