WO2020034497A1

WO2020034497A1 - Anti-wear additive, preparation method therefor, use thereof, and lubricating oil containing same

Info

Publication number: WO2020034497A1
Application number: PCT/CN2018/119541
Authority: WO
Inventors: 张至; 孙大陟
Original assignee: 深圳南科新材科技有限公司
Priority date: 2018-08-17
Filing date: 2018-12-06
Publication date: 2020-02-20
Also published as: CN108929745A; CN108929745B

Abstract

Disclosed are an anti-wear additive, a preparation method therefor, the use thereof, and a lubricating oil containing same. The anti-wear additive comprises an amido-modified fluorinated graphene and/or fluorinated graphite with copper nano-particles coated on the surface thereof. By applying the copper nano-particles to the surface of the amido-modified fluorinated graphene and/or fluorinated graphite, an anti-wear additive for use in lubricating oils and having a good performance is obtained.

Description

Wear-resistant additive, preparation method and application thereof, and lubricating oil containing same

Technical field

The present application belongs to the field of wear-resistant materials, and particularly relates to a wear-resistant additive, a preparation method, an application thereof, and a lubricating oil containing the same.

Background technique

Graphene is a two-dimensional material composed of carbon atoms arranged in a hexagonal grid. It has excellent optical, electrical, mechanical, thermal, and magnetic properties. It is a current hotspot in nanomaterials research. Graphene is fluorinated. It can effectively control the electronic structure and physical and chemical properties of graphene materials to obtain fluorinated graphene materials. Compared with other graphene-based materials, fluorinated graphene materials have smaller nanometer size, better mechanical and thermal properties, and more Large specific surface area and more surface wrinkles, so it has great application value in the fields of photocatalysis, optoelectronic devices, lubricating materials, medical engineering, etc., especially it has excellent lubricating properties. After adding it to lubricating oil, During the friction process, a transfer film with high bonding characteristics can be formed between the lubricating oil and the surface to be rubbed, preventing direct contact between the frictional surfaces, thereby reducing the friction coefficient of the lubricating oil and reducing friction losses.

However, fluorinated graphene has a relatively obvious disadvantage, that is, a large number of fluorine atoms are distributed on the surface of the fluorinated graphene, which makes the graphene as a whole more polar, and thus reduces the fluorinated graphene in the oil phase solvent. Dispersibility, reducing the wear resistance of fluorinated graphene. Some existing methods to enhance the dispersion performance of fluorinated graphene in oil phase or water phase, such as amination modification or oxidation of fluorinated graphene. To a certain extent, the dispersion performance of fluorinated graphene in lubricating oils has been enhanced. However, the above-mentioned enhancement effects are often only effective for certain types of mineral lubricating oils or biological lubricating oils, and the effect is not obvious for compounded lubricating oils. The above modification of fluorinated graphene reduces the adsorption ability of the fluorine atoms on the graphene surface to the contact surface, especially the metal contact surface, and reduces the thickness of the transfer film layer of the lubricating oil and the friction surface, thereby making the fluorinated graphene The amount of addition in the lubricating oil is greatly increased, thereby increasing the cost of the lubricating oil.

For example, CN108285817A discloses a method for preparing a lubricating oil additive, which obtains a fluorinated graphene containing a small amount of oxygen atoms by fluorinating graphene oxide with fluorine gas and oxygen after absorbing water. It is applied to liquid paraffin lubricating oil, and the friction coefficient of the lubricating oil can be reduced to 0.13 only by adding a content of about 0.05 wt%. However, when the above-mentioned lubricating oil additives are used in other types of lubricating oils, they have abrasion resistance to the lubricating oil. The improvement is not obvious, and its wear resistance needs to be improved; CN108130178A discloses a lubricating oil enhanced by fluorinated graphene. By combining fluorinated graphene with lignin, polyethylene glycol, thiol methyl tin carbon black, etc. Mix and heat for modification. The obtained modified fluorinated graphene is mixed with amine solvent, oleic acid, phosphating solution, trimethylpropane, ammonium fluoborate, sodium pyrophosphate, plasticizer, emulsifier, etc. and added to the base oil. In this paper, a lubricating oil with strong abrasion resistance was obtained with a friction coefficient of about 0.043. However, the above-mentioned mixture has complex components, including a large amount of dispersants such as emulsifiers for dispersion modification In addition, in order to achieve the above-mentioned good performance, a large amount of fluorinated graphene is added to the lubricating oil, and at least 1% by weight or more of fluorinated graphene is added to the lubricating oil. The selection of the above components and contents is greatly The cost of lubricating oil is increased, and the preparation process of the product is more complicated, so it is not suitable for large-scale production.

Based on the related technology, those skilled in the art need to further improve the dispersibility of fluorinated graphene or fluorinated graphite in lubricating oil and its applicability to various lubricating oils, and improve the fluorinated graphene or fluorinated graphite. The thickness of the wear-resistant layer formed on the friction surface of the material reduces the difficulty of preparing and modifying fluorinated graphene or fluorinated graphite, and reduces the amount of fluorinated graphene or fluorinated graphite in lubricants, making fluorinated graphene And / or fluorinated graphite is more suitable for use as a lubricant additive.

Summary of the Invention

The following is an overview of the topics detailed in this article. This summary is not intended to limit the scope of protection of the claims.

The purpose of the present application is to provide a wear-resistant additive, its preparation method, use, and lubricating oil containing the same. The wear-resistant additive should have good dispersibility and low addition amount in the lubricating oil. It has the advantages of simple preparation method and excellent abrasion resistance.

To achieve this, one of the objectives of the present application is to provide an abrasion-resistant additive, which includes an amine-modified fluorocarbon material whose surface is coated with copper nanoparticles.

The fluorinated carbon material is fluorinated graphene and / or fluorinated graphite. .

After the copper nanoparticles are coated on the surface of the amine-modified fluorinated carbon material, the coated copper nanoparticles are approximately spherical and can function as balls between the friction surfaces, so that the wear resistance of the resulting fluorinated carbon material lubricating film is improved. At the same time, in the friction process, especially in the friction process of metal devices, copper nanoparticles are easier to adsorb on the friction surface than other nanoparticles, and the fluorocarbon materials connected to them are also easier to adsorb and form films on the friction surface. Therefore, after coating the copper nanoparticles on the surface of the fluorinated carbon material, the effective amount of the fluorinated carbon material can be effectively reduced. The higher the friction load is, the larger the adsorption amount of the fluorinated carbon material is, and the copper nanoparticles on the surface are Low melting point, good ductility, melting and spreading on the friction surface under high temperature and pressure, can form a dense shear strength protective film, so it can effectively reduce the adhesive wear of the friction interface, and make the amino modified fluorine coated with copper nanoparticles The carbonized material can make the lubricating oil exhibit excellent wear resistance with a small amount of addition.

In the present application, a chemical bond is formed between the amine group modified on the surface of the fluorinated carbon material and the copper nanoparticles, so that the copper nanoparticles are tightly coated on the surface of the fluorinated carbon material.

The fluorinated carbon material is graphene and / or graphite whose surface is modified with fluorine atoms, and can be obtained by commercially available or those skilled in the art by fluorinating graphene and / or graphite according to any relevant technology.

The "amine group" refers to an organic group whose nitrogen atom is only connected to carbon and / or hydrogen, such as a primary amine, a secondary amine, or a tertiary amine group.

Optionally, in the amine-modified fluorocarbon material, the fluorocarbon material and the polymer containing at least two amine groups are connected through a chemical bond, so that the surface of the fluorocarbon material contains free amine groups and contains at least Two amine-based polymers can form chemical bonds with copper nanoparticles, and, compared to small molecular compounds, there is a synergistic lubrication effect between the polymer molecules connected to the surface of the fluorocarbon material and the copper nanoparticles. The synergistic effect of the two makes the surface of the fluorinated carbon material less wrinkled, the solubility of the fluorinated carbon material in the lubricating oil is higher, and the more universal it is for various types of lubricating oil, thereby reducing the addition amount and friction of the wear resistant additives coefficient.

Optionally, the weight ratio of the amine-modified fluorocarbon material to the copper nanoparticles is 1: 0.1 to 1.5, such as 1: 0.2, 1: 0.3, 1: 0.4, 1: 0.5, 1: 0.6, 1: 0.7, 1: 0.8, 1: 0.9, 1: 1, 1: 1.1, 1: 1.2, 1: 1.3, or 1: 1.4, etc. The above weight ratio can ensure that copper nanoparticles are uniformly and densely coated on the amine-modified The surface of the fluorinated carbon material will not cause wear resistance because the content of copper nanoparticles is too low, and it will not fall off because of the content of too high.

Optionally, in the amine-modified fluorocarbon material, the weight ratio of the fluorocarbon material to the polymer containing at least two amine groups is 1: 0.5 to 2, for example, 1: 0.6, 1: 0.7, 1: 0.8, 1: 0.9, 1: 1.0, 1: 1.1, 1: 1.2, 1: 1.3, 1: 1.4, 1: 1.5, 1: 1.6, 1: 1.7, 1: 1.8 or 1: 1.9, etc.

Optionally, the surface of the amino-modified fluorocarbon material is further modified with a monoamine-based polymer, and the introduction of the monoamine-based polymer can effectively improve the dispersion performance of the wear-resistant additive in the lubricating oil, making it suitable for a variety of applications. Lubricant system.

Optionally, the monoamine-based polymer is modified on the surface of the amine-modified fluorocarbon material by forming a chemical bond between the amine group and the fluorocarbon material.

Optionally, the weight ratio of the monoamine-based polymer to the amine-modified fluorocarbon material is 1: 0.5-2, for example, 1: 0.6, 1: 0.7, 1: 0.8, 1: 0.9, 1: 1.0, 1: 1.1, 1: 1.2, 1: 1.3, 1: 1.4, 1: 1.5, 1: 1.6, 1: 1.7, 1: 1.8 or 1: 1.9, etc.

Optionally, the monoamine-based polymer is a polyetheramine, which may be any one or a mixture of at least two of M400-type, M600-type, M800-type or M1000-type polyetheramine produced by Jeffamine Company.

Optionally, the number-average molecular weight of the monoamine-based polymer is 400-2000. If the molecular weight is too low, the synergistic lubricating effect will decrease. If the molecular weight is too high, copper nanoparticles may be coated and the abrasion resistance may be reduced.

Optionally, the polymer containing at least two amine groups includes polyetheramine and / or polyethyleneimine, which may be polyetheramine, and may be D230, D1000 or D2000 polyetheramine produced by Jeffamine Company. Any one or a mixture of at least two of the resins.

Optionally, the number average molecular weight of the polymer containing at least two amine groups is 200-4000. If the molecular weight is too low, the synergistic lubricating effect will decrease. If the molecular weight is too high, copper nanoparticles will be coated and the wear resistance will be reduced.

Optionally, the particle size of the copper nanoparticles is 20-100 nm, for example, 25 nm, 30 nm, 35 nm, 40 nm, 50 nm, 60 nm, 70 nm, 80 nm, 90 nm, or 95 nm.

Optionally, the weight percentage of the fluorine element in the fluorinated carbon material is 5-50% by weight, for example, 6% by weight, 10% by weight, 15% by weight, 20% by weight, 25% by weight, 30% by weight, 35% by weight, 40% by weight, and 45% by weight Or 48wt% and so on.

Another object of the present application is to provide a method for preparing the abrasion-resistant additive. The method includes the following steps:

Step (1): mixing a fluorocarbon material and a polymer containing at least two amine groups according to a formula amount, dispersing in a solution, stirring, centrifuging, and washing to obtain an amine-modified fluorocarbon material;

In step (2), the amine-modified fluorocarbon material obtained in step (1) is mixed with copper nanoparticles, and the mixture is ground to obtain the wear-resistant additive.

A third object of the present application is to further provide a method for preparing the abrasion-resistant additive, which includes the following steps:

Step (a), mixing the fluorinated carbon material, the polymer containing at least two amine groups and the monoamine-based polymer according to the formula amount, dispersing in the solution, stirring, centrifuging, and washing to obtain an amine-modified fluorocarbon material;

In step (b), the amine-modified fluorocarbon material obtained in step (a) is mixed with copper nanoparticles, and the mixture is ground to obtain the wear-resistant additive.

The fourth object of the present application is to provide the use of the wear-resistant additive, which is used as a lubricant additive, which can effectively reduce the friction coefficient and the amount of wear of the lubricant.

A fifth object of the present application is to provide a lubricating oil with the abrasion resistant additive added to the lubricating oil.

Optionally, the weight percentage content of the wear-resistant additive in the lubricating oil is 0.01 to 1% by weight, for example, 0.02% by weight, 0.05% by weight, 0.1% by weight, 0.15% by weight, 0.2% by weight, 0.25% by weight, and 0.30% by weight. %, 0.35 wt%, 0.40 wt%, 0.45 wt%, 0.50 wt%, 0.55 wt%, 0.60 wt%, 0.70 wt%, 0.75% wt, 0.80 wt%, 0.85 wt%, or 0.95 wt%, etc.

Compared with related technologies, the beneficial effects of this application are:

The present application obtains a wear-resistant additive for lubricating oil with excellent performance by coating copper nanoparticles on the surface of an amine-modified fluorocarbon material. The wear-resistant additive is simple to prepare, has a small amount of addition, and has a relatively high wear-resistant effect. The untreated fluorinated carbon material has been greatly improved compared to that, which can reduce the friction coefficient of the lubricating oil to about 0.02, and is suitable for a variety of lubricating oils.

After reading and understanding the drawings and detailed description, other aspects can be understood.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a SEM photograph of the wear-resistant additive 1 obtained in Example 1. FIG.

FIG. 2 is an SEM photograph of 15 of the wear-resistant additive obtained in Comparative Example 1. FIG.

detailed description

The technical solutions of the present application are further described below through specific implementations.

Example 1

The abrasion resistant additive 1 is prepared by the following steps:

In step (a), 10 g of fluorinated graphene (wherein the weight percentage of fluorine element is 48 wt%), 10 g of D230 polyetheramine (number average molecular weight 220) produced by Jeffamine Company, and 10 g of M600 polyether produced by Jeffamine Company Amine (number average molecular weight: 597) was mixed, and the mixture was dispersed in petroleum ether. After stirring for 20 minutes, the dispersion was centrifuged, the centrifuged supernatant was removed, and the precipitate was washed with ethanol to obtain amine-modified fluorinated graphene. The surface of amine-modified fluorinated graphene contains free amine groups and polyoxypropylene molecular segments;

In step (b), 10 g of the amine-modified fluorinated graphene obtained in step (a) is mixed with 10 g of copper nanoparticles having an average particle diameter of 50 nm, and the mixture is ground with a ball mill for 20 min to obtain the wear-resistant additive 1, wherein copper The nanoparticles are evenly distributed on the surface of the amine-modified fluorinated graphene.

Example 2

The abrasion resistant additive 2 is prepared by the following steps:

The only difference from Example 1 is that the amount of D230 polyetheramine added in step (a) is 5 g.

Example 2 gave a wear-resistant additive 2.

Example 3

The antiwear additive 3 is prepared by the following steps:

The only difference from Example 1 is that the amount of D230 polyetheramine added in step (a) was 20 g.

Example 3 gave a wear-resistant additive 3.

Example 4

The wear-resistant additive 4 is prepared by the following steps:

The only difference from Example 1 is that the amount of M600-type polyetheramine added in step (a) was 5 g.

Example 4 gave a wear-resistant additive 4.

Example 5

The wear-resistant additive 5 is prepared by the following steps:

The only difference from Example 1 is that the amount of M600-type polyetheramine added in step (a) is 20 g.

Example 5 gives a wear-resistant additive 5.

Example 6

The wear-resistant additive 6 is prepared by the following steps:

The only difference from Example 1 is that the D230-type polyetheramine in step (a) was replaced with a D2000-type polyetheramine.

Example 6 gives a wear-resistant additive 6.

Example 7

The wear-resistant additive 7 is prepared by the following steps:

The only difference from Example 1 is that the M600-type polyetheramine in step (a) is replaced with M1000-type polyetheramine.

Example 7 gives a wear-resistant additive 7.

Example 8

The wear-resistant additive 8 is prepared by the following steps:

The only difference from Example 1 is that the M600-type polyetheramine in step (a) was replaced with M400-type polyetheramine.

Example 8 gives a wear-resistant additive 8.

Example 9

The wear-resistant additive 9 is prepared by the following steps:

The difference from Example 1 is only that the fluorinated graphene in step (a) is replaced with fluorinated graphite, and the weight percentage of fluorine atoms therein is 6 wt%.

Example 9 gives a wear-resistant additive 9.

Example 10

The wear-resistant additive 10 is prepared by the following steps:

In step (1), 10 g of fluorinated graphene (in which the weight percentage of fluorine element is 48 wt%) and 10 g of D230 polyetheramine (number average molecular weight: 220) produced by Jeffamine Company are mixed, and the mixture is dispersed in petroleum ether and stirred After 20 min, the dispersion was centrifuged, the supernatant after centrifugation was removed, and the precipitate was washed with ethanol to obtain amine-modified fluorinated graphene. The surface of the obtained amine-modified fluorinated graphene contains free amine groups;

In step (2), 10 g of the amine-modified fluorinated graphene obtained in step (1) is mixed with 10 g of copper nanoparticles having an average particle diameter of 50 nm, and the mixture is ground with a ball mill for 20 minutes to obtain the wear-resistant additive 10, wherein Copper nanoparticles are evenly distributed on the surface of amine-modified fluorinated graphene.

Example 11

The wear-resistant additive 11 is prepared by the following steps:

The only difference from Example 1 is that the amount of copper nanoparticles added in step (b) is 1 g.

Example 11 gives a wear-resistant additive 11.

Example 12

The wear-resistant additive 12 is prepared by the following steps:

The difference from Example 1 is only that the amount of copper nanoparticles added in step (b) is 15 g.

Example 12 gives a wear-resistant additive 12.

Example 13

The wear-resistant additive 13 is prepared by the following steps:

The difference from Example 1 is only that the average particle diameter of the copper nanoparticles in step (b) is 102 nm and the added amount is 0.5 g.

Example 13 gives a wear-resistant additive 13.

Example 14

The wear-resistant additive 14 is prepared by the following steps:

The difference from Example 1 is only that the average particle diameter of the copper nanoparticles in step (b) is 22 nm and the added amount is 18 g.

Example 14 gave a wear-resistant additive 14.

Comparative Example 1

A fluorinated graphene material with a fluorine content of 48% by weight is selected as the wear-resistant additive 15.

Comparative Example 2

Copper nanoparticles with an average particle diameter of 50 nm were selected as the wear-resistant additive 16.

Comparative Example 3

The wear-resistant additive 17 is prepared by the following steps:

In step (c), 10 g of fluorinated graphene (wherein the weight percentage of fluorine element is 48 wt%) is dispersed in petroleum ether, and the dispersion is centrifuged after stirring for 20 min, the centrifuged supernatant is removed, and the precipitate is washed with ethanol to obtain Pre-fluorinated graphene;

In step (d), 10 g of the pre-processed fluorinated graphene obtained in step (c) is mixed with 10 g of copper nanoparticles having an average particle diameter of 50 nm, and the mixture is ground with a ball mill for 20 minutes to obtain the wear-resistant additive 17.

Comparative Example 3 gave a wear-resistant additive 17.

Comparative Example 4

The antiwear additive 18 is prepared by the following steps:

In step (e), 10 g of fluorinated graphene (in which the weight percentage of fluorine element is 48 wt%) is mixed with 10 g of M600-type polyetheramine (number average molecular weight: 597) produced by Jeffamine Company, and the mixture is dispersed in petroleum ether. After stirring for 20min, the dispersion was centrifuged, the centrifuged supernatant was removed, and the precipitate was washed with ethanol to obtain modified fluorinated graphene. The surface of the modified fluorinated graphene contains polyoxypropylene molecular segments;

In step (f), 10 g of the modified fluorinated graphene obtained in step (e) is mixed with 10 g of copper nanoparticles having an average particle diameter of 50 nm, and the mixture is ground with a ball mill for 20 minutes to obtain the wear-resistant additive 18.

The abrasion-resistant additives 1 to 18 obtained in the foregoing examples and comparative examples were mixed with the corresponding lubricating oil, and the following tests were performed. The mixing ratio and test results are listed in Table 1.

(1) Morphology test

The VEGA3 scanning electron microscope (SEM) produced by TESCAN was used to test the morphology of the wear-resistant additives 1 to 18 obtained in the examples and comparative examples. The test parameters were: voltage 5kV and electron beam intensity 10eV.

(2) Friction test

The abrasion resistance additives 1 to 18 are mixed with the corresponding lubricating oils respectively, and the friction coefficients and wear spots of the lubricating oils obtained according to the method described in the American standard ASTM G99-2005 "Standard Test Method for Wear Test on Pin and Disk Device" are tested. diameter.

Table 1 Performance comparison table of wear resistant additives 1 ～ 18

FIG. 1 is a SEM photograph of the abrasion resistant additive 1 obtained in Example 1, and FIG. 2 is a SEM photograph of the abrasion resistant additive 15 obtained in Comparative Example 1. From the comparison between the two, it is known that the present application uses copper nanoparticles for coating. The surface of the fluorinated carbon material modified by amine-modified fluorinated graphene and / or fluorinated graphite is very smooth and flat, and the lamellar structure in graphene and / or graphite has also been preserved to a certain extent. The above structure helps Improve the wear resistance of fluorinated graphene and / or fluorinated graphite as lubricant additives.

It can be known from Tables 1 to 3 that the wear-resistant additive obtained in the present application is suitable for various lubricating oils. In addition, when the added amount is 0.02 wt%, good wear resistance can be achieved. When the added amount is 0.1 wt% The abrasion resistance effect is very ideal. The friction coefficient of the lubricant added with the abrasion-resistant additive obtained in this application can reach 0.02, and the diameter of the wear spot is only 0.3mm, which indicates that the abrasion-resistant additive obtained in this application can improve the abrasion resistance of the lubricant. obvious.

From the comparison between Experiment 1, Experiment 6 and Experiment 12, it can be known that the modification of the monoamine-based polymer on the surface of fluorinated graphene and / or fluorinated graphite can effectively improve the dispersion performance of the wear-resistant additive in the lubricating oil, thereby making lubrication Oils add less wear-resistant additives to achieve the same wear-resistant effect.

From the comparison between Experiment 1, Experiment 13 and Experiment 14, it can be known that the proper amount of copper nanoparticles can ensure that the copper nanoparticles are evenly and densely coated on the surface of the amine-modified fluorinated graphene and / or fluorinated graphite. It is because the content of copper nanoparticles is too low to have a wear-resistant effect, and the content of copper nano-particles is not caused to fall off, thereby losing the wear-resistant effect.

From the comparison between Experiment 1, Experiment 17 and Experiment 18, it can be known that simply using fluorinated graphene or copper nanoparticles as the lubricant wear-resistant additive can only achieve less wear resistance.

From the comparison between Experiment 1, Experiment 19 and Experiment 20, it can be known that if the surface of the fluorinated graphene is not modified so that it has a certain number of amine groups, the copper nanoparticles cannot be uniformly coated on the surface of the fluorinated graphene. The obtained abrasion-resistant additive cannot achieve the corresponding abrasion-resistant effect.

In summary, by coating copper nanoparticles on the surface of amine-modified fluorinated graphene and / or fluorinated graphite in this application, a wear-resistant additive for lubricating oil with excellent performance can be obtained. The preparation is simple, the addition amount is small, the abrasion resistance is greatly improved compared with untreated fluorinated graphene and / or fluorinated graphite, and it is suitable for a variety of lubricants.

The specific embodiments described above further describe the purpose, technical solution, and beneficial effects of the present application in detail. It should be understood that the above are only specific embodiments of the present application and are not intended to limit the present application.

Claims

An abrasion-resistant additive, wherein the abrasion-resistant additive includes an amine-modified fluorocarbon material whose surface is coated with copper nanoparticles;

The fluorinated carbon material is fluorinated graphene and / or fluorinated graphite.
The wear-resistant additive according to claim 1, wherein in the amine-modified fluorocarbon material, the fluorocarbon material and a polymer containing at least two amine groups are connected through a chemical bond, so that the fluorocarbon material The surface contains free amine groups.
The wear-resistant additive according to claim 1 or 2, wherein a surface of the amine-modified fluorocarbon material is further modified with a monoamine-based polymer.
The wear-resistant additive according to claim 1 or 2, wherein a weight ratio of the amine-modified fluorocarbon material to the copper nanoparticles is 1: 0.1 to 1.5;

Optionally, in the amine-modified fluorocarbon material, a weight ratio of the fluorocarbon material to the polymer containing at least two amine groups is 1: 0.5 to 2.
The wear-resistant additive according to claim 3, wherein the monoamine-based polymer forms a chemical bond between the amine group and the fluorocarbon material, and is modified on the surface of the amine-modified fluorocarbon material;

Optionally, the weight ratio of the monoamine-based polymer to the amine-modified fluorocarbon material is 1: 0.5 to 2;

Optionally, the monoamine-based polymer is a polyetheramine, which may be any one of M400, M600, M800, or M1000 polyetheramines or a mixture of at least two of them;

Optionally, the number average molecular weight of the monoamine-based polymer is 400-2000.
The wear-resistant additive according to any one of claims 2 to 5, wherein the polymer containing at least two amine groups comprises polyetheramine and / or polyethyleneimine; it can be a polyetheramine and can be D230 type Any one or a mixture of at least two of D1000 type or D2000 type polyetheramine resin;

Optionally, the number average molecular weight of the polymer containing at least two amine groups is 200-4000.
The wear-resistant additive according to any one of claims 1 to 6, wherein a particle diameter of the copper nanoparticles is 20 to 100 nm;

Optionally, the weight percentage of the fluorine element in the fluorinated carbon material is 5-50% by weight.
A method for preparing a wear-resistant additive according to any one of claims 1 to 7, wherein the method includes the following steps:

Step (1): mixing a fluorinated carbon material and a polymer containing at least two amine groups according to a formula amount, dispersing in a solution, stirring, centrifuging, and washing to obtain an amine-modified fluorocarbon material;

In step (2), the amine-modified fluorocarbon material obtained in step (1) is mixed with copper nanoparticles, and the mixture is ground to obtain the wear-resistant additive.
A method for preparing a wear-resistant additive according to any one of claims 1 to 7, wherein the method includes the following steps:

Step (a), mixing the fluorinated carbon material, the polymer containing at least two amine groups and the monoamine-based polymer according to the formula amount, dispersing in the solution, stirring, centrifuging, and washing to obtain an amine-modified fluorocarbon material;

In step (b), the amine-modified fluorocarbon material obtained in step (a) is mixed with copper nanoparticles, and the mixture is ground to obtain the wear-resistant additive.
The use of the abrasion-resistant additive according to any one of claims 1 to 7, wherein the abrasion-resistant additive is used as a lubricating oil additive to reduce the friction coefficient and abrasion amount of the lubricating oil.
A lubricating oil, wherein the abrasion-resistant additive according to any one of claims 1 to 7 is added to the lubricating oil.
The lubricating oil according to claim 11, wherein the weight percentage content of the wear-resistant additive in the lubricating oil is 0.01 to 1 wt%.