Graphene-fullerene-like molybdenum disulfide compounded lubricating oil additive and preparation method thereof

A technology of fullerene molybdenum disulfide and lubricating oil additives, which is applied in the direction of additives, petroleum industry, lubricating compositions, etc., to achieve the effects of improving dispersion and stability, improving anti-wear and bearing capacity

Inactive Publication Date: 2015-07-08
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Graphene-fullerene-like molybdenum disulfide compounded lubricating oil additive and preparation method thereof

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Embodiment 1

[0041] 1) Measure 80mL of N-N dimethylformamide and 20mL of deionized water, mix well, add 0.1g of graphene oxide 1 particles, and disperse for 1h with ultrasound to form a uniformly dispersed graphene oxide suspension, Then add 0.1g of lipophilic polymer chain KH-5702 to the suspension, and carry out chemical grafting in a water bath at 40°C and magnetic stirring for 2 hours, wherein the stirring speed is 400r / min; after the grafting is completed, Adopt high-speed centrifuge to carry out centrifugation, rotating speed is 2000r / min, and adopt dehydrated alcohol to carry out repeated cleaning and centrifugation, after drying, obtain grafted graphene oxide 3;

[0042] 2) Add 0.1 g of grafted graphene oxide 3 to 1000 mL of deionized water, stir evenly, disperse by ultrasonic for 3 h, and then add 0.3 mL of hydrazine hydrate to reduce the grafted graphene oxide 3 to remove its The hydroxyl groups and oxygen-containing groups on the surface were reacted in a water bath at 80°C for ...

Embodiment 2

[0049] 1) Measure 85mL of N-N dimethylformamide and 15mL of deionized water, mix well, add 0.3g of graphene oxide 1 particles, and disperse for 2h with ultrasound to form a uniformly dispersed graphene oxide suspension, Then add 0.3g of lipophilic polymer chain KH-5702 to the suspension, and carry out chemical grafting in a water bath at 45°C and magnetic stirring for 3 hours, wherein the stirring speed is 400r / min; after the grafting is completed, Adopt high-speed centrifuge to carry out centrifugation, the rotating speed is 3000r / min, and adopt dehydrated alcohol to carry out repeated cleaning and centrifugation, after drying, obtain grafted graphene oxide 3;

[0050] 2) Add 0.3 g of grafted graphene oxide 3 to 1000 mL of deionized water, stir evenly, and disperse it by ultrasonic for 4 h, then add 0.6 mL of hydrazine hydrate to reduce the grafted graphene oxide 3 to remove its The hydroxyl groups and oxygen-containing groups on the surface were reacted in a water bath at 90...

Embodiment 3

[0057] 1) Measure 90mL of N-N dimethylformamide and 10mL of deionized water, mix well, add 0.5g of graphene oxide 1 particles, and disperse for 3h with ultrasound to form a uniformly dispersed graphene oxide suspension, Then add 0.5g of lipophilic polymer chain KH-5702 to the suspension, and carry out chemical grafting for 4 hours in a water bath at 50°C and magnetic stirring, wherein the stirring speed is 500r / min; after the grafting is completed, Adopt high-speed centrifuge to carry out centrifugation, the rotating speed is 5000r / min, and adopt dehydrated alcohol to carry out repeated cleaning and centrifugation, after drying, obtain grafted graphene oxide 3;

[0058] 2) Add 0.5 g of grafted graphene oxide 3 to 1000 mL of deionized water, stir evenly, and disperse it by ultrasonic for 5 h, then add 0.9 mL of hydrazine hydrate to reduce the grafted graphene oxide 3 to remove its Hydroxyl and oxygen-containing groups on the surface were reacted in a water bath at 100°C for 90 ...

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Abstract

The invention discloses a graphene-fullerene-like molybdenum disulfide compounded lubricating oil additive and a preparation method thereof. The method is implemented by taking oxidized graphene and fullerene-like molybdenum disulfide nanoparticles as raw materials through carrying out surface grafting on oxidized graphene nanoparticles by using lipophilic 3-(methyl acryloyl oxy) propyl-trimethoxysilane (KH-570), and carrying out reduction by using hydrazine hydrate, so that grafted graphene nanoparticles are formed; wrapping the fullerene-like molybdenum disulfide nanoparticles with polystyrene (PS), so that PS/IF-MoS2 nano composite microspheres are formed; and finally, inducing KH-570 and PS to have a polymerization reaction, so that graphene-fullerene-like molybdenum disulfide compounded nanoparticles are formed. The compounded nanoparticles prepared according to the invention are used as a lubricating oil additive, and can be steadily dispersed in lubricating oil for a long time, and various organic dispersants are not required to be added.

Description

technical field [0001] The invention relates to the technical field of lubricating oil additives, in particular to a graphene-like fullerene molybdenum disulfide composite lubricating oil additive and a preparation method thereof. Background technique [0002] In recent years, the preparation and tribological properties of nanomaterials have attracted people's attention. Studies have found that dispersing nanoparticles in lubricating oil can reduce friction and wear, effectively improve the tribological properties of lubricating oil under the action of temperature, pressure and friction, and nanoparticles can be filled in the surface of the friction pair. Micro pits and damaged parts play a repairing role. Therefore, the research on the use of nanoparticles as lubricating oil additives has become a hot field in recent years. [0003] Graphene is sp 2 A new type of hybrid carbon material, the carbon atoms on the single layer have high bonding energy, which makes it exhibit...

Claims

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Application Information

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IPC IPC(8): C10M125/00C10M161/00C10N30/06C10N30/04
Inventor 熊党生秦永坤王楠王琨陈娟娟李建亮
Owner NANJING UNIV OF SCI & TECH
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