CN114874676A - Preparation method of two-dimensional layered nano material ordered arrangement coating - Google Patents
Preparation method of two-dimensional layered nano material ordered arrangement coating Download PDFInfo
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- CN114874676A CN114874676A CN202210625032.5A CN202210625032A CN114874676A CN 114874676 A CN114874676 A CN 114874676A CN 202210625032 A CN202210625032 A CN 202210625032A CN 114874676 A CN114874676 A CN 114874676A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D139/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen; Coating compositions based on derivatives of such polymers
- C09D139/04—Homopolymers or copolymers of monomers containing heterocyclic rings having nitrogen as ring member
- C09D139/06—Homopolymers or copolymers of N-vinyl-pyrrolidones
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-containing compounds
- C08K2003/382—Boron-containing compounds and nitrogen
- C08K2003/385—Binary compounds of nitrogen with boron
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/06—Metal compounds
- C10M2201/062—Oxides; Hydroxides; Carbonates or bicarbonates
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/06—Metal compounds
- C10M2201/065—Sulfides; Selenides; Tellurides
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2050/00—Form in which the lubricant is applied to the material being lubricated
- C10N2050/08—Solids
Abstract
The invention discloses a preparation method of a two-dimensional layered nano-material ordered arrangement type coating, belonging to the technical field of self-lubricating coating material preparation. According to the invention, the slurry containing the two-dimensional layered nano solid lubricant is prepared, the obtained slurry is dripped on the surface of a substrate with a certain angle, and the two-dimensional layered nano solid lubricant tends to be orderly oriented and arranged under the action of shear stress in the slurry spreading process. And after the slurry on the surface of the substrate does not flow, drying and degreasing to obtain the solid lubricant coating with two-dimensional layered nano highly ordered arrangement. The coating with the two-dimensional layered nano-materials arranged in a highly ordered manner prepared by the invention can be used as an antifriction lubricating coating on the surface of a mechanical part, and the energy loss and the wear failure caused by the friction of the part are obviously reduced.
Description
Technical Field
The invention relates to the technical field of self-lubricating coating material preparation, in particular to a method for preparing two-dimensional layered nano materials in an ordered arrangement manner.
Background
The surface of materials such as metal and the like is coated with a self-lubricating coating containing a solid lubricant, so that friction is generated in the lubricant, and the friction and the abrasion are reduced by utilizing the lower shearing strength of the lubricant. Self-lubricating coatings can be prepared by various methods, such as spraying, inlaying, bonding, extruding, rubbing, sputtering, ion plating and the like. The two-dimensional layered solid lubricant in the self-lubricating coating prepared by the technology is in disordered arrangement, so that the lubricating property of the material is lost, and the friction coefficient is higher and is generally greater than 0.1. Researches show that when the two-dimensional layered solid lubricant is arranged along the (002) crystal plane in an oriented manner, the lubricating performance is remarkably improved, the friction coefficient of the material is reduced by 25%, and the wear resistance is improved by 60%. The invention provides a preparation method of a two-dimensional layered ordered self-lubricating coating of a solid lubricant, which has excellent antifriction and wear-resistant performances and can remarkably prolong the service life of materials such as metal and the like.
Disclosure of Invention
The invention aims to provide a preparation method of a two-dimensional layered nano-material ordered arrangement coating, and provides a feasible scheme for realizing the highly ordered arrangement of single and multi-component two-dimensional layered nano-materials.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a method for orderly arranging two-dimensional layered nano materials, which comprises the following steps:
(1) preparing a two-dimensional layered nano material into a dispersion liquid, and carrying out ultrasonic oscillation treatment for 1 h;
(2) adding polyvinylpyrrolidone (PVP) into the dispersion liquid obtained in the step (1), heating and stirring to completely dissolve the PVP to obtain dispersion slurry containing the two-dimensional layered nano material;
(3) dropping the dispersed slurry on a substrate to spread the dispersed slurry;
(4) drying the coating obtained in the step (3) at 60 ℃ for 6 h;
(5) degreasing the dried coating obtained in the step (4) at 400 ℃ for 1 h.
Furthermore, the concentration of the added polyvinylpyrrolidone (PVP) is 10-50 g/L, preferably 20-30 g/L.
Further, in the step (3), an included angle between the substrate and the horizontal plane is 1-30 degrees, and preferably 5-15 degrees.
The invention discloses the following technical effects:
1. the preparation process of the ordered arrangement type two-dimensional layered nano-material coating is simple and convenient, and can be completed only by common experimental equipment: and dropping slurry containing the two-dimensional layered nano material on the surface of the inclined substrate, wherein the slurry slides and spreads under the action of gravity, and the two-dimensional layered nano material is induced to be orderly arranged along the sliding direction.
2. The preparation process is simple, and the method can be used for large-scale construction of the self-lubricating coating with the two-dimensional layered nano-materials arranged in a highly ordered manner.
3. The invention can not only realize the ordered arrangement of a single two-dimensional layered nano material, but also realize the ordered arrangement of two or more two-dimensional layered nano materials by adjusting the composition of the two-dimensional layered material in the slurry.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a graph prepared in example 1WS 2 Ordered coating microscopic schematic (a) and microscopic topography (b);
FIG. 2 shows Van der Waals heterojunction WS prepared in example 2 and example 3 2 XRD patterns of/h-BN ordered coatings and disordered coatings.
Detailed Description
In order to make the technical solution of the present invention more apparent, the following detailed description of the technical solution of the present invention is provided by using examples
Example 1
WS 2 Preparation of ordered coatings:
(1) 0.6g of WS 2 Dispersing the nano powder in 20mL of deionized water to prepare 30g/L of dispersion liquid, and carrying out ultrasonic oscillation for 0.5 h;
(2) adding 0.6g of polyvinylpyrrolidone into the dispersion liquid obtained in the step (1), heating and stirring at 35 ℃ for 0.5h to completely dissolve the polyvinylpyrrolidone to obtain the dispersion liquid containing WS 2 The dispersed slurry of (4);
(3) ground glass is used as a spreading substrate, and an included angle of 10 degrees is formed between the substrate and the horizontal plane;
(4) dropping the dispersed slurry on the surface of the ground glass to spread the ground glass;
(5) drying the coating obtained in the step (4) at 60 ℃ for 6 h;
(6) degreasing the dried coating obtained in the step (5) at 400 ℃ for 1 h.
FIG. 1 shows WS prepared in example 1 2 An ordered coating microscopic schematic and a microscopic topography; wherein (a) is WS 2 Schematic representation of the ordered arrangement of the coatings, (b) is WS 2 Scanning Electron microscopy of the coating, it can be seen from FIG. 1 that WS is present in the coating produced 2 In highly ordered arrangement.
Example 2
Van der Waals heterojunction WS 2 /h-BN(WS 2 And h-BN) preparation of ordered coatings:
(1) 0.8g of WS 2 Dispersing the/h-BN powder in 20mL of deionized water to prepare 40g/L of dispersion liquid, and carrying out ultrasonic oscillation treatment for 0.5 h;
(2) adding 0.5g of polyvinylpyrrolidone into the dispersion liquid obtained in the step (1), heating and stirring at 35 ℃ for 0.5h to completely dissolve the polyvinylpyrrolidone to obtain dispersion slurry;
(3) the ground glass is used as a spreading substrate, and an included angle of 5 degrees is formed between the ground glass and the horizontal plane;
(4) dropping the dispersed slurry on the surface of the ground glass to spread the ground glass;
(5) drying the coating obtained in the step (4) at 60 ℃ for 6 h;
(6) degreasing the dried coating obtained in the step (5) at 400 ℃ for 1 h.
Van der Waals heterojunction WS prepared in example 2 with substrate at 5 deg. angle to horizontal 2 XRD pattern of/h-BN ordered coating, see FIG. 2. Two peak intensities I of (002) and (103) in XRD pattern (002) /I (103) A ratio of 94.07 is reached, a higher ratio indicating van der Waals heterojunctions WS in the coating 2 the/h-BN preferentially orients along the (002) crystal face.
Example 3
Van der Waals heterojunction WS 2 Preparing a/h-BN ordered coating:
(1) 0.8g of Van der Waals heterojunction WS 2 Dispersing the/h-BN nano powder in 20mL of deionized water to prepare 40g/L of dispersion liquid, and carrying out ultrasonic oscillation treatment for 0.5 h;
(2) adding 0.5g of polyvinylpyrrolidone into the dispersion liquid obtained in the step (1), and heating and stirring at 35 ℃ for 0.5h to completely dissolve the polyvinylpyrrolidone;
(3) the ground glass is used as a spreading substrate, and an included angle of 10 degrees is formed between the ground glass and the horizontal plane;
(4) dropping the dispersed slurry on the surface of the ground glass to spread the ground glass;
(5) drying the coating obtained in the step (4) at 60 ℃ for 6 h;
(6) degreasing the dried coating obtained in the step (5) at 400 ℃ for 1 h.
Example 3 preparation of Van der Waals heterojunction WS under the condition that the substrate and the horizontal plane form an angle of 10 DEG 2 XRD pattern of/h-BN ordered coating, see FIG. 2. Intensity I of both peaks of the coating (002) and (103) (002) /I (103) The ratio was 75.3.
Comparing the intensities of two peaks (002) and (103) of the three curves in FIG. 2, respectively, the van der Waals heterojunction WS was prepared under the condition that the included angle between the substrate and the horizontal plane was 5 deg. in example 2 2 I of coatings ordered by/h-BN (002) /I (103) 94.07 is reached; example 3 preparation of Van der Waals heterojunction WS under the condition that the included angle between the substrate and the horizontal plane is 10 DEG 2 I of coatings ordered by/h-BN (002) /I (103) Up to 75.3; van der Waals heterojunction WS 2 I of coatings with disordered arrangement of/h-BN (002) /I (103) Only 4.45. Van der Waals heterojunction WS in examples 2 and 3 2 I of/h-BN coating (002) /I (103) All values are significantly higher than the Van der Waals heterojunction WS 2 The coating with disordered/h-BN arrangement proves that the self-lubricating nano coating prepared by the invention is highly orderly arranged along the (002) crystal face.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (10)
1. A preparation method of a two-dimensional layered nano material ordered arrangement coating is characterized by comprising the following steps:
(1) preparing two-dimensional layered nano powder into dispersion liquid, and carrying out ultrasonic oscillation treatment;
(2) adding polyvinylpyrrolidone (PVP) into the dispersion liquid obtained in the step (1), heating and stirring to completely dissolve the PVP to obtain dispersion slurry containing the two-dimensional layered nano material;
(3) dropping the dispersed slurry on a substrate which forms a certain angle (1-30 degrees) with the horizontal plane, and spreading the dispersed slurry;
(4) drying the coating obtained in the step (3) at 60 ℃ for 6 h;
(5) and (4) degreasing the dried coating obtained in the step (4).
2. The method of claim 1, wherein the two-dimensional layered nanocoating is in an ordered arrangement.
3. The method of claim 1, wherein non-limiting examples of the two-dimensional layered nanomaterial used include graphene, WS 2 、MoS 2 h-BN, etc.
4. The production method according to claim 1, wherein the ultrasonic vibration treatment time in the step (1) is 0.5 h.
5. The method according to claim 1, wherein the concentration of the dispersion in the step (1) is 30 to 50 g/L.
6. The method according to claim 1, wherein the polyvinylpyrrolidone (PVP) is added to increase the viscosity of the slurry.
7. The method according to claim 1, wherein the polyvinylpyrrolidone (PVP) is added in the step (2) at a concentration of 10-50 g/L.
8. The method according to claim 1, wherein the temperature of the step (2) is 35 ℃ after the addition of polyvinylpyrrolidone (PVP) and the magnetic stirring is carried out for 0.5 h.
9. The method according to claim 1, wherein the angle between the substrate and the horizontal plane in step (3) is in the range of 1 to 30 °.
10. The method according to claim 1, wherein the degreasing temperature in the step (5) is 400 ℃ and the degreasing time is 1 hour.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110210282A1 (en) * | 2010-02-19 | 2011-09-01 | Mike Foley | Utilizing nanoscale materials as dispersants, surfactants or stabilizing molecules, methods of making the same, and products produced therefrom |
| CN103708443A (en) * | 2013-12-17 | 2014-04-09 | 南京科孚纳米技术有限公司 | Preparation technology for graphene nanosheet thin film |
| CN113179611A (en) * | 2021-03-15 | 2021-07-27 | 佛山市晟鹏科技有限公司 | Boron nitride heat dissipation film and preparation method and application thereof |
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- 2022-06-02 CN CN202210625032.5A patent/CN114874676A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110210282A1 (en) * | 2010-02-19 | 2011-09-01 | Mike Foley | Utilizing nanoscale materials as dispersants, surfactants or stabilizing molecules, methods of making the same, and products produced therefrom |
| CN103708443A (en) * | 2013-12-17 | 2014-04-09 | 南京科孚纳米技术有限公司 | Preparation technology for graphene nanosheet thin film |
| CN113179611A (en) * | 2021-03-15 | 2021-07-27 | 佛山市晟鹏科技有限公司 | Boron nitride heat dissipation film and preparation method and application thereof |
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