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Fluorinated graphene lubricant additive and preparing method thereof and fluorinated graphene lubricant composite material

A lubricating oil additive and graphene lubricating oil technology, applied in additives, lubricating compositions, petroleum industry, etc., can solve problems such as insufficient fluorine repulsion, low interlayer spacing, large amount of fluorine gas, etc., to increase interlayer spacing, expand The effect of layer spacing and high utilization rate

Active Publication Date: 2018-07-17
SICHUAN UNIV
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Problems solved by technology

However, the existing fluorination methods have the following disadvantages: if the degree of fluorination is low, the existence of a small amount of fluorine will lead to insufficient repulsion between fluorine and low interlayer spacing, which cannot meet the requirements for high wear resistance of fluorinated graphene
To increase the degree of fluorination, the fluorination reaction needs to occur under high temperature conditions, and fluorine gas itself has high chemical activity and danger. Therefore, the high-temperature fluorination process has potential safety hazards and high energy consumption. Harsh; at the same time, the amount of fluorine gas is large, and the utilization rate of fluorine gas is not high

Method used

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  • Fluorinated graphene lubricant additive and preparing method thereof and fluorinated graphene lubricant composite material
  • Fluorinated graphene lubricant additive and preparing method thereof and fluorinated graphene lubricant composite material
  • Fluorinated graphene lubricant additive and preparing method thereof and fluorinated graphene lubricant composite material

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preparation example Construction

[0025] The preparation method of a kind of lubricating oil additive provided by the embodiment of the present invention, it comprises: After graphene oxide absorbs water, then carry out fluorination reaction, such as figure 1 shown in .

[0026] It should be noted that after using graphene oxide to absorb water, the water easily enters between the layers of graphene oxide and forms hydrogen bonds between the oxygen groups of graphene oxide, and at the same time increases the interlayer distance of graphene oxide, making fluorine gas It is easier to enter for fluorination; the fluorination process is carried out under normal temperature and low fluorine conditions, and the fluorine gas entering the interior of graphene oxide will react with the water medium preferentially, releasing a large amount of heat, which promotes the oxygen bonded with the water hydrogen bond The group breaks quickly, so that the in-situ fluorine gas and the HF generated by fluorine gas and water are gr...

Embodiment 1

[0045] This embodiment provides a kind of lubricating oil composite material, is made by following method:

[0046] First, 50 mg of graphene oxide was dried in a nitrogen atmosphere for 3 hours and then placed in a closed space containing water vapor for 1 hour to absorb moisture.

[0047] Secondly, the graphene oxide was transferred to the fluorination reaction kettle, nitrogen gas was introduced into the reaction kettle and the gas was pumped out until the pressure in the reaction kettle was lower than 100 Pa, and the above-mentioned nitrogen replacement was completed three times.

[0048] Then, feed the mixed gas of 5% fluorine and nitrogen into the reactor at a rate of 0.2 L / min until the pressure in the reactor reaches 2KPa, and react at room temperature for 30 minutes to complete the fluorination to obtain a high Fluorinated graphene with fluorine content.

[0049] Finally, 30 mg of fluorinated graphene was ultrasonically dispersed in 100 mL of liquid paraffin base lubr...

Embodiment 2

[0051] This embodiment provides a kind of lubricating oil composite material, is made by following method:

[0052] First, 50 mg of graphene oxide was dried in a nitrogen atmosphere for 3 hours and then placed in a closed space containing water vapor for 1 hour to absorb moisture.

[0053] Secondly, the graphene oxide was transferred to the fluorination reaction kettle, nitrogen gas was introduced into the reaction kettle and the gas was pumped out until the pressure in the reaction kettle was lower than 100 Pa, and the above-mentioned nitrogen replacement was completed three times.

[0054] Then, feed the mixed gas of 5% fluorine gas and nitrogen gas into the reactor at a rate of 0.2 L / min until the pressure in the reactor reaches 5KPa, and react at room temperature for 30 minutes to complete the fluorination, and obtain high Fluorinated graphene with fluorine content.

[0055] Finally, 30 mg of fluorinated graphene was ultrasonically dispersed in 100 mL of liquid paraffin b...

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Abstract

The invention discloses a fluorinated graphene lubricant additive and a preparing method thereof and a fluorinated graphene lubricant composite material, and relates to the technical field of lubricating materials. The preparing method of the lubricant additive comprises the step of conducting a fluorination reaction after absorbing moisture from graphene oxide. Through the fluorination process ofin-situ catalysis of graphene oxide by the moisture medium in graphene oxide, it is achieved that under the room temperature and the low fluorine gas concentration, fluorinated graphene with low oxygen content, high fluorine content and large interlayer spacing is prepared. The fluorinated graphene lubricant additive is simply mixed with lubricating oil, and does not easily get agglomerated in the lubricating oil, and the fluorinated graphene lubricant composite material with high dispersing stability is prepared. Compared with an original compound material, the friction coefficient is lowered by 52.3%, and the wearing ratio is lowered by 92.5%.

Description

technical field [0001] The invention relates to the technical field of lubricating materials, and in particular to a fluorinated graphene lubricating oil additive, a preparation method thereof and a fluorinated graphene lubricating oil composite material. Background technique [0002] Friction and wear is one of the main reasons for the failure of mechanical parts. According to authoritative statistics, nearly 50% of the world's energy consumption is caused by friction and wear. Therefore, reducing equipment loss and energy consumption caused by friction is a great challenge in today's society. Lubricant additives are critical to improving lubricant performance. In the current lubricating oil market, traditional lubricating oil still occupies a dominant position, but due to its limited lubricating ability and the addition of additives containing sulfur, phosphorus, chlorine and other elements in traditional lubricating oil, which cause serious pollution to the environment, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M125/18C10M177/00C10N30/06C10N30/04
CPCC10M125/18C10M177/00C10M2201/042C10M2205/003C10M2205/163C10M2209/1033C10M2223/0405C10M2229/025C10N2030/04C10N2030/06
Inventor 刘向阳樊坤王旭罗龙波赖文川刘昌莉
Owner SICHUAN UNIV
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