Modified graphene oxide, engine lubricating oil and application thereof

A technology of stone oxide and graphene, applied in the field of lubricating oil, can solve problems such as difficult to open, unstable dispersion, poor compatibility, etc., to achieve the effects of reducing impact, saving fuel, and extending the oil change period

Active Publication Date: 2017-01-25
江苏悦尔科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the strong van der Waals interaction between graphene, it cannot be stably dispersed in solvents, and its compatibility with other mate

Method used

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  • Modified graphene oxide, engine lubricating oil and application thereof
  • Modified graphene oxide, engine lubricating oil and application thereof
  • Modified graphene oxide, engine lubricating oil and application thereof

Examples

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preparation example Construction

[0042] The preparation method of this modified graphene oxide mainly uses the graphene oxide prepared by the improved Hummer method as a precursor, and uses long-chain aliphatic amines, organosilicon, etc. to modify it under different reaction conditions by solvothermal method. In the present invention, dodecylamine, tetradecylamine, hexadecylamine, octadecylamine (ODA), hexadecyltrimethoxysilane, gamma-methacryloxypropyltrimethoxy Silane (KH-570) etc. modified graphene oxide to prepare functionalized graphene oxide.

[0043] Graphene oxide prepared by the improved Hummers method described in the present invention can be prepared by the method disclosed in the known technology, for example as follows: 1) 1g of natural graphite, concentrated H 2 SO 4 、H 3 PO 4 The three are placed in a three-necked flask, and concentrated H 2 SO 4 with H 3 PO 4 The volume ratio of the solution was 9:1, and 6 g of potassium permanganate was added in portions, and stirred in an ice-water b...

Embodiment 1

[0065] Embodiment 1 preparation of long-chain aliphatic amine modified graphene

[0066] Dissolve 500g of different long-chain fatty amines (dodecylamine, tetradecylamine, hexadecylamine, octadecylamine) in 50L of 95v / v% ethanol, and ultrasonically disperse for 1 hour , made into a homogeneous solution, and quickly poured it into a stainless steel reaction kettle containing 50L of 10mg / mL graphene oxide (GO) aqueous solution with a polytetrafluoroethylene liner, heated at 100°C, reacted for 2h, and then cooled naturally to At room temperature, filter out the reaction solid, use ethanol as a solvent to mix with the solid, centrifuge the product at 9000r / min for 30min, repeat the centrifugation three times to remove unreacted organic amine, vacuum filter the product, and rinse with a large amount of deionized water Three times, the filter cake was dried overnight at 30°C under vacuum, and finally a light black powder long-chain aliphatic amine-modified graphene oxide was obtaine...

Embodiment 2

[0070] The difference from Example 1 is that in the modification of graphene oxide, a silane coupling agent γ-methacryloxypropyltrimethoxysilane (KH-570) was also added.

[0071] Dissolve 500g of octadecylamine and 50g of KH570 in 50L of 95v / v% ethanol, ultrasonically disperse for 1 hour to make a homogeneous solution, and quickly pour it into 50L of 10mg / mL graphene oxide (GO) The aqueous solution was heated at 100°C in a stainless steel reaction kettle lined with polytetrafluoroethylene, reacted for 2 hours, and then naturally cooled to room temperature, filtered out the solids of the reaction, mixed with ethanol as a solvent, and the product was heated at 9000r / min Centrifuge at low temperature for 30 minutes, repeat the centrifugation three times to remove unreacted organic amine, vacuum filter the product, and wash it three times with a large amount of deionized water, dry the filter cake at 30°C in vacuum overnight, and finally obtain a light black powder modified with oc...

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Abstract

The invention discloses a graphene oxide modifying method and application thereof in engine lubricating oil. The method comprises the following steps: firstly preparing graphene oxide (GO) by adopting an improved Hummers process, and modifying the graphene oxide with long-chain fatty amine and organic silicon to obtain modified graphene derivative; and secondly, taking the modified graphene oxide as A), and compounding a friction modifier with a metal cleaning agent B), a metal corrosion inhibitor C), a complex antioxidant, an anti-foaming agent, a viscosity index improver, synthetic ester base oil and base oil, so that the engine lubricating oil added with the graphene oxide modifying agent is obtained. The method disclosed by the invention has the advantages that abrasion of an engine is greatly reduced by adding the graphene oxide modifying agent, so that oil draining period of automobile engine oil is prolonged to 50000 kilometers from 5000 kilometers, and fuel oil can be saved by 7-10% in the aspect of fuel economy.

Description

technical field [0001] The invention relates to a modified graphene oxide, engine lubricating oil and application thereof, and belongs to the technical field of lubricating oil. Background technique [0002] The engine is the heart of automobiles and many industrial equipments, and its lubricating oil consumption accounts for about 50% of the total lubricating oil. As the blood of the engine, engine oil plays the roles of lubrication, cooling, sealing, cleaning, anti-rust and anti-corrosion, etc. It is a functional liquid to maintain the long life and efficient operation of the engine. [0003] As the manufacture of engines becomes more and more sophisticated, the requirements for lubricating oils become more and more stringent, and lubricating oil additives are crucial to improving the performance of lubricating oils. In the current lubricating oil market, traditional lubricating oil still occupies a dominant position, but due to its limited lubricating ability and the...

Claims

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Application Information

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IPC IPC(8): C10M141/06C10M141/12C10M169/04C10N30/06C10N40/25C10N10/04C10N10/12
CPCC10M141/06C10M141/12C10M169/044C10M2201/041C10M2201/087C10M2203/1006C10M2207/28C10M2207/281C10M2207/2835C10M2209/084C10M2215/064C10M2215/086C10M2219/046C10M2219/066C10M2219/068C10M2223/045C10N2010/04C10N2010/12C10N2020/02C10N2030/06C10N2030/72C10N2040/25
Inventor 唐果东张宇宫明军严守洋姚常青
Owner 江苏悦尔科技有限公司
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