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Method for improve lubricating oil lubricity and thermal conductivity by utilizing graphene oxide

A graphene and lubricity technology, applied in the field of increasing lubricity and thermal conductivity of lubricating oil, can solve the problem that lubricity and thermal conductivity cannot meet demand, and achieve the effect of improving lubricity and thermal conductivity, good effect and simple operation.

Inactive Publication Date: 2016-11-30
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the lubricity and thermal conductivity of lubricating oil in special applications still cannot meet the needs, especially in terms of thermal conductivity and friction and wear. Therefore, according to specific applications, it has become a demand to improve the performance of lubricating oil in these two aspects.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Pre-oxidation of graphite powder

[0023] Potassium thiosulfate (8.4g), phosphorus pentoxide (8.4g) and concentrated sulfuric acid (50ml) were successively added to the flask and dissolved at 80°C. Then add 10g of pre-oxidized graphite powder, graphite powder is graphite powder with mesh number 5000, stir at 80°C for 4.5h, add deionized water (100ml) after the reaction finishes, and finally carry out multiple reaction with deionized water (1.6l) Suction filtration, and finally dried at 50°C for 24h.

[0024] (2) Re-oxidation of the pre-oxidized product

[0025] Add 2g of the pre-oxidized product to 46ml of concentrated sulfuric acid, slowly add 6g of potassium permanganate under ice bath, then react at 35°C for 2h, then slowly add 92ml of deionized water, and finally pour it into the sesame cake and add 280ml to Ionized water and 7.5ml hydrogen peroxide.

[0026] (3) pickling and dialysis of the oxidized product

[0027] The obtained product was acid-washed with...

Embodiment 2

[0031] (1) Pre-oxidation of graphite powder

[0032] Potassium thiosulfate (8.4g), phosphorus pentoxide (8.4g) and concentrated sulfuric acid (50ml) were successively added to the flask and dissolved at 80°C. Then add 10g of pre-oxidized graphite powder, stir at 80°C for 4.5h, add deionized water (100ml) after the reaction is completed, and finally use deionized water (1.6l) to carry out multiple suction filtration, and finally dry at 50°C for 24h.

[0033] (2) Re-oxidation of the pre-oxidized product

[0034] Add 2g of the pre-oxidized product to 46ml of concentrated sulfuric acid, slowly add 6g of potassium permanganate under ice bath, then react at 35°C for 2h, then slowly add 92ml of deionized water, and finally pour it into the sesame cake and add 280ml to Ionized water and 7.5ml hydrogen peroxide.

[0035] (3) pickling and dialysis of the oxidized product

[0036] The obtained product was acid-washed with 10% hydrochloric acid for one week, and then dialyzed in deioni...

Embodiment 3

[0040] (1) Pre-oxidation of graphite powder

[0041] Potassium thiosulfate (8.4g), phosphorus pentoxide (8.4g) and concentrated sulfuric acid (50ml) were successively added to the flask and dissolved at 80°C. Then add 10g of pre-oxidized graphite powder, stir at 80°C for 4.5h, add deionized water (100ml) after the reaction is completed, and finally use deionized water (1.6l) to carry out multiple suction filtration, and finally dry at 50°C for 24h.

[0042] (2) Re-oxidation of the pre-oxidized product

[0043]Add 2g of the pre-oxidized product to 46ml of concentrated sulfuric acid, slowly add 6g of potassium permanganate under ice bath, then react at 35°C for 2h, then slowly add 92ml of deionized water, and finally pour it into the sesame cake and add 280ml to Ionized water and 7.5ml hydrogen peroxide.

[0044] (3) pickling and dialysis of the oxidized product

[0045] The obtained product was acid-washed with 10% hydrochloric acid for one week, and then dialyzed in deioniz...

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Abstract

The invention relates to a method for improve lubricating oil lubricity and thermal conductivity by utilizing graphene oxide. The method comprises a step 1) of sequentially adding potassium thiosulfate, phosphorus pentoxide and concentrated sulphuric acid into a flask, dissolving the raw material at 80 DEG C, adding graphite powder, and performing stirring at 80 DEG C; after the reaction is over, adding deionized water, finally using the deionized water to perform suction filtration many times, and performing drying at 50 DEG C; a step 2) of adding a pre-oxidized product into concentrated sulphuric acid, slowly adding potassium permanganate under ice-bath, reacting at 35 DEG C, slowly adding deionized water, finally pouring the product into the flask, and then adding deionized water and hydrogen peroxide; a step 3) of performing acid pickling on the product through hydrochloric acid, and using a dialysis bag to perform dialysis in the deionized water; a step 4) of performing mixed reaction of graphene oxide, ethyl alcohol and octadecylamine, using the ethyl alcohol to perform suction filtration and cleaning, and obtaining a final product after drying. According to the method, the lubricating oil lubricity and thermal conductivity are improved, the whole process is simple to operate and safe, and the effect is good.

Description

[technical field] [0001] The invention belongs to the technical field of chemical industry, in particular to a method for increasing the lubricity and thermal conductivity of lubricating oil by using graphene oxide. [Background technique] [0002] Graphene is a transparent material with a single atomic layer and a two-dimensional network structure developed in the past ten years. It has good electrical conductivity, thermal conductivity, light transmission, and better mechanical strength than other existing materials. It is prefabricated The best material for ladders. Since the first graphene sheet was obtained experimentally in 2004, its applications in biology, medicine, optoelectronic materials, semiconductors and conductors have been unprecedentedly developed. Due to the excellent properties of graphene, it is predicted that the 21st century The most important new materials. At present, the methods for preparing graphene include mechanical exfoliation, vapor deposition...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04C10M125/02C10N30/06
CPCC10M125/02C10N2030/06
Inventor 蔺华林马文飞韩生赵维娜陈海军薛原马鹏余焓于飞卢德力蒋继波李原婷邱丰裴素鹏祝俊何忠义熊丽萍
Owner SHANGHAI INST OF TECH
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