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High-thermal conductivity lubricating oil and preparation method thereof

A high thermal conductivity, lubricating oil technology, used in lubricating compositions, petroleum industry, additives, etc., can solve the problems of easy wear of friction pairs, easy deterioration of lubricating oil, shortened life, etc., and achieve low interface thermal resistance and friction coefficient. The effect of reducing, good carrying capacity

Active Publication Date: 2014-05-07
青岛康普顿石油化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

On the one hand, the friction pair will be more prone to wear, and the lubricating oil will be easily deteriorated at high temperature, and the service life will be greatly reduced.

Method used

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  • High-thermal conductivity lubricating oil and preparation method thereof
  • High-thermal conductivity lubricating oil and preparation method thereof
  • High-thermal conductivity lubricating oil and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A lubricating oil with high thermal conductivity, comprising: 98% by weight of liquid paraffin oil and 2% by weight of fluorinated graphene nanosheets.

[0031] The preparation method of this lubricating oil is:

[0032] (1) Preparation of fluorinated graphene nanosheets by gas-phase fluorination: 1) Preparation of graphite oxide: In an ice bath, mix 10g of graphite powder and 5g of sodium nitrate with 230mL of concentrated sulfuric acid, and slowly add 30g of KMn0 while stirring 4 ;It was transferred to a 35°C water bath for 30 minutes, then gradually added 460mL of deionized water, and when the temperature rose to 98°C, the reaction was continued for 40 minutes, the mixture turned from brown to bright yellow, further diluted with water, and used for weight fraction 30% H 2 0 2 Solution treatment, neutralization of unreacted permanganate, centrifugal filtration and repeated washing of the filter cake, and finally vacuum drying to obtain graphite oxide. 2) Preparation...

Embodiment 2

[0035] A high thermal conductivity lubricating oil, comprising: 94.95% by weight of HVI150SN lubricating oil, 5% by weight of fluorinated graphene nanosheets and 0.05% by weight of sorbitan oil Ester Tween 80.

[0036] The preparation method of this lubricating oil is:

[0037] (1) Preparation of fluorinated graphene nanosheets by gas-phase fluorination: the preparation process is the same as in Example 1; (2) Preparation of lubricating oil containing fluorinated graphene nanosheets: 1) the fluorinated graphene nanosheets obtained by the method Graphene nanosheets are mixed with oil-soluble dispersant sorbitan oleate Tween 80 and gradually added to HVI150SN lubricating base oil, wherein the fluorinated graphene nanosheets are 5% by weight, and the weight of the dispersant The percentage content is 0.05%; 2) Under the condition of 60°C, the above mixture is firstly stirred by high-speed machinery for 30 minutes, then ultrasonicated for 30 minutes, and then the rubber mill tech...

Embodiment 3

[0040] A lubricating oil with high thermal conductivity, comprising: 98.2% by weight of liquid paraffin oil and 1.8% by weight of fluorinated graphene nanosheets.

[0041] The preparation method of this lubricating oil is:

[0042] (1) Preparation of fluorinated graphene nanosheets by exfoliation of fluorinated graphite: 1) direct reaction of carbon and fluorine at 500 °C to generate fluorinated graphite, 2) solvent intercalation of fluorinated graphite: the intercalation solvent is N , N-dimethylformamide (DMF), dissolve 500mg fluorinated graphite in 500ml DMF, heat to reflux for 2 hours, 3) ultrasonic process of fluorinated graphite: put the suspension obtained in step 2) at a power of 200W , the ultrasonic frequency is 40HZ, the ultrasonic temperature is 25°C, and the ultrasonic time is 6 hours. 4) Separation and drying of fluorinated graphene nanosheets: use high-speed centrifugation to obtain wet powder of fluorinated graphene, and then use 60°C vacuum Dried to obtain fl...

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Abstract

The invention relates to high-thermal conductivity lubricating oil and a preparation method thereof. The lubricating oil contains base oil and fluorinated graphene nanosheets, wherein the weight percent of content of the fluorinated graphene nanosheets is 0.01 to 10.0 %; and the preparation method comprises the steps as follows: firstly, preparing the fluorinated graphene nanosheets; and secondly, preparing the lubricating oil containing the fluorinated graphene nanosheets. The lubricating oil provided by the invention has the advantages of excellent antifriction effect, extremely high heat conduction capability and excellent stability and dispersibility.

Description

technical field [0001] The invention relates to a lubricating oil with high thermal conductivity and a preparation method thereof, belonging to the field of preparation of wear-resistant lubricating oil medium for machinery or aerospace. Background technique [0002] Lubricating oil or grease can well reduce the friction between two relatively moving contact surfaces (friction pair for short), and can repair the wear of the two friction pairs at the same time. Lubricity and wear resistance are important signs of lubricating oil performance. In many mechanical motion occasions, the friction between the contact surfaces is a very violent motion, there is a relatively large pressure between the friction pairs, and high temperature will be generated during the friction process. High temperature and high pressure will have a great impact on the physical and chemical properties of lubricating oil. In order to make up for the defects of liquid lubricating oil, lubricating additive...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M125/18C10M141/02C10N30/06
Inventor 于伟谢华清陈立飞黎阳吴子华
Owner 青岛康普顿石油化工有限公司
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