CN106009875A - Nano particle dispersion liquid with lubricating function as well as preparation method and application thereof - Google Patents
Nano particle dispersion liquid with lubricating function as well as preparation method and application thereof Download PDFInfo
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- CN106009875A CN106009875A CN201610352053.9A CN201610352053A CN106009875A CN 106009875 A CN106009875 A CN 106009875A CN 201610352053 A CN201610352053 A CN 201610352053A CN 106009875 A CN106009875 A CN 106009875A
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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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1606—Antifouling paints; Underwater paints characterised by the anti-fouling agent
- C09D5/1612—Non-macromolecular compounds
- C09D5/1618—Non-macromolecular compounds inorganic
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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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- 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
- C09D7/65—Additives macromolecular
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K2201/011—Nanostructured additives
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Abstract
The invention relates to a nano particle dispersion liquid with a lubricating function as well as a preparation method and application thereof. The nano particle dispersion liquid comprises a dispersing agent, an emulsifying agent, an initiator, a solvent, water and nano particles with the lubricating function, wherein the nano particles with the lubricating function are composed of copolymer nano particles of acrylic monomers and acrylamide monomers and graphene oxide, and the surfaces of the copolymer nano particles of the acrylic monomers and acrylamide monomers are coated with the graphene oxide. The nano particle dispersion liquid adopts a graphene composite nano particle structure with an excellent lubricating property, and a coated composite structure is formed by utilizing the self-lubricating property of graphite. In a using process, interfacial migration is formed in a hydrophilic-to-hydrophobic transformation process after graphene reduction, so that lubricating nano particles migrate to the surface of a coating so as to form a self-lubricating layer with a nano micro-convex structure. An excellent lubricating effect can be achieved by adding a small amount of the nano particle dispersion liquid, and the defect of large adding amount of the current lubricating particles is well solved.
Description
Technical field
The present invention relates to a kind of nanoparticulate dispersion, a kind of lubricating function nano-particle dispersion
Liquid and its preparation method and application.
Background technology
Automatically cleaning technology is a kind of to adjust polluter in the skill of its surface-clinging ability by its own face state
Art, has major application demand in national economy every field.Wherein nano surface micro-convex structure is to be derived from
A kind of important means of cleaning function, although appearance structure can be obtained by various physical processing techniques various
Nanometer micro-convex structure, but its high cost and low working (machining) efficiency be its application important bottleneck.Cause
This, use coated coating technology, is a kind of by forming the nanometer micro-convex structure with self-lubricating on its surface
Cheap and practicable technology path, becomes the automatically cleaning technology currently most with market prospect.In order to obtain
Must have self-cleaning nanometer micro-convex structure, use the nano-particle such as polymer, inorganic matter to fill the most in a large number
Obtain the coarse structure on surface.But the problem of this route maximum is loading to be needed very greatly, in order to obtain table
A little micro-convex structure of face, needs a large amount of to add lubrication nano-particle, the thing of the coating that deteriorated significantly itself
Physicochemical performance so that its construction application all brings huge difficult problem.
Nano-carbon material, such as Graphene and CNT, owing to itself having the lubrication property of material with carbon element,
In conjunction with its high surface area, big L/D ratio, the nano-carbon layer himself sprawling formation has good lubrication property.
But if simply fill, still exist and how to obtain the problem that surface effectively utilizes, fill out in a large number
Fully negative effect tends not to bring good effect.Therefore, exploitation one can be in the coating to surface
The lubricating function nano-particle migrated, it is only necessary to a small amount of interpolation can realize its gathering on surface, is greatly improved
The utilization rate of function nano granule, reduces loading, has great application prospect.
Summary of the invention
For the defect of above-mentioned technology, the present invention proposes a kind of lubricating function nanoparticulate dispersion and preparation thereof
Methods and applications.
A kind of lubricating function nanoparticulate dispersion, described dispersion liquid includes the component of following mass percent:
Described lubricating function nano-particle is by acrylic monomer and the copolymer nano of acrylamide monomers
Grain forms with graphene oxide, and in lubricating function nano-particle, each component percentage is as follows: acrylic acid-the third
Acrylamide copolymer nano granule, graphene oxide 5～20%；
The particle diameter 2～200nm of acrylic acid-acrylamide copolymer nano-particle；
Wherein, graphene oxide is wrapped in the surface of acrylic acid-acrylamide copolymer nano-particle.
The preparation method of a kind of lubricating function nanoparticulate dispersion, comprises the following steps:
Step one: by dispersant, emulsifying agent, acrylic monomer, acrylic amide list in high-speed stirred
Body dissolves in a solvent；
Step 2: temperature is increased to assigned temperature, drips the weak solution of initiator subsequently, until having reacted
Entirely, copolymerization acrylic acid-acrylamide compolymer/nano granule；
Step 3: simultaneously graphene oxide is dispersed in water；
Step 4: after reaction to be polymerized is cooled near room temperature, is slowly added to oxidation in high-speed agitating process
Graphene dispersing solution, i.e. obtains the dispersion liquid of lubricating function nano-particle, utilizes graphene oxide quiet with its
Electric interactions, is assembled in nano grain surface by graphene oxide, and the material made has the moisture of excellence
Dissipate property, can be mutually compatible with various water-base resins.
In described step one acrylic monomer can be acrylic acid, acrylic acid methyl ester., ethyl acrylate, third
Olefin(e) acid butyl ester, Isobutyl 2-propenoate, Hexyl 2-propenoate, Isooctyl acrylate monomer, lauryl acrylate, propylene
Acid benzyl ester, cyclohexyl acrylate, perfluoroalkyl acrylate, hydroxy ethyl phosphate ester, acrylic acid are different
Norbornene ester, acrylic acid oxolane methyl ester, methacrylic acid, methyl methacrylate, methacrylic acid second
Ester, butyl methacrylate, isobutyl methacrylate, methacrylic acid ester, Isooctyl acrylate monomer,
At least one group in lauryl methacrylate, isobornyl methacrylate, cyclohexyl methacrylate
Become.
In described step one acrylic monomer can be acrylamide, N hydroxymethyl acrylamide any one
Plant and arbitrary proportion combines.
In described step one, solvent can be ethanol, isopropanol, n-butyl alcohol, butyl glycol ether, ethylene glycol first
Ether, ethylene glycol, propylene glycol, propylene glycol monomethyl ether, propylene glycol methyl ether acetate, propylene-glycol ethyl ether, different
At least 2 kinds of arbitrary proportion mixing in propanol, n-butyl alcohol；
In described step one, emulsifying agent can be alkylphenol polyoxyethylene class, Ben-zylphenol Polyoxyethyl Ether emulsifying
Any one of agent, preferably OP-10.
In described step one, dispersant can be alkylsulfonate, alkylbenzenesulfonate, cetyl trimethyl
Ammonium bromide, Polyethylene Glycol, hydroxymethyl cellulose, sodium carboxymethylcellulose pyce, ethyl cellulose, methylcellulose,
Carboxymethyl cellulose, hydroxypropyl methyl cellulose, polyvinylpyrrolidone, polyvinyl alcohol, TritonX appoint
Anticipate one or more combination.
High speed dispersion stir speed (S.S.) described in step one is 100～600 revs/min, stirs 5～30 minutes.
Reaction temperature described in step 2 is 60～120 degree, is incubated 30 minutes～2 hours.
But initiator azo-bis-isobutyl cyanide described in step 2, azo-bis-iso-dimethyl, azo two are different
Heptonitrile, benzoyl peroxide, cumyl peroxide, methyl ethyl ketone peroxide, peroxy dicarbonate two hexamethylene
Any one or combination in fat, tert-butyl hydroperoxide, weak solution concentration is 0.5～10%.
Graphene oxide dispersion concentration described in step 3 is the aqueous dispersions of 0.01～5%, can use ultrasonic,
Grinding, high pressure homogenize, the technique of high speed shear realize dispersion.
Step 4 high speed mixing speed is 500～4000 revs/min, stirs 30 minutes～5 hours.
A kind of lubricating function nanoparticulate dispersion is applied in aqueous lubricating functional paint, lubricating function nanometer
Particle dispersion mixes with water-base resin, weak reductant, auxiliary agent, cosolvent, water, can prepare multiple
Aqueous lubricating functional paint, wherein lubricating function nanoparticulate dispersion 0.5～10%, water-base resin 40～80%,
Weak reductant 0.01～1%, auxiliary agent 1～5%, cosolvent 5～20%, remaining is water, during use, can use
Spraying, roller coating, blade coating, the film-forming process of silk screen printing, use the curing process that baking the affected part after applying some drugs is roasting, temperature be 80～
180 degree, toast 5～30 minutes.
Described water-base resin can be water soluble acrylic acid, aqueous polyurethane, aqueous epoxy resins, water alcohol acid
Any one of resin, preferably waterborne polyurethane resin.
Described weak reductant can be any one of ascorbic acid, citric acid, oxalic acid etc..
When use, by adding a small amount of weak reductant, it is prepared as various water paint, baking-curing film forming
Time, the graphene oxide on nano-particle top layer is reduced into Graphene by weak reductant, utilizes its hydrophilic and hydrophobic
Change, can drive Graphene to surface migration so that with lubrication nano-particle to surface-assembled become tool
There is the nano coating of self-lubricating structure.This lubricating function nano-particle can add on a small quantity i.e. to be assembled to top layer, tool
Having materials to save, the feature of coating substance Physicochemical superior performance, at field tools such as automatically cleaning, anti-soil, anticoagulant mists
There is important commercial application value.
The invention has the beneficial effects as follows: the present invention uses a kind of graphite with excellent lubrication property itself
Alkene composite nanometer particle structure, utilizes the self-lubricating property of Graphene, forms parcel composite construction.The most more
It is essential that in use, hydrophilic formation circle in hydrophobic transition process after utilizing Graphene reduction
Face migrates, and makes lubrication nano-particle migrate to coating surface, forms the self-lubricating layer with nanometer micro-convex structure,
Can realize adding the lubricant effect that i.e. can reach excellence on a small quantity, solve current lubricated granules addition well
Big deficiency.Compared with prior art, the present invention has the most a little:
(1) Graphene is used to be combined by self assembly with acrylic acid/acrylamide compolymer/nano granule, top layer
Graphene there is more superior lubricant effect；
(2) in self-lubricating water paint, Graphene composite nanometer particle interacts with weak reduction, promotes nanometer
Granule migrates to top layer, forms efficient nanometer micro-convex structure, has the huge advantage that addition is few；
(3) aqueous self-lubricating coating, has the feature of safety and environmental protection, has huge market prospect.
Accompanying drawing explanation
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the preparation flow figure of the present invention.
Detailed description of the invention
For the technological means making the present invention realize, creation characteristic, reach purpose and be easy to understand with effect,
Below the present invention is expanded on further.
As it is shown in figure 1, a kind of lubricating function nanoparticulate dispersion, described dispersion liquid includes following quality hundred
The component of proportion by subtraction:
Described lubricating function nano-particle is by acrylic monomer and the copolymer nano of acrylamide monomers
Grain forms with graphene oxide, and in lubricating function nano-particle, each component percentage is as follows: acrylic acid-the third
Acrylamide copolymer nano granule, graphene oxide 5～20%；
The particle diameter 2～200nm of acrylic acid-acrylamide copolymer nano-particle；
Wherein, graphene oxide is wrapped in the surface of acrylic acid-acrylamide copolymer nano-particle.
The preparation method of a kind of lubricating function nanoparticulate dispersion, comprises the following steps:
Step one: by dispersant, emulsifying agent, acrylic monomer, acrylic amide list in high-speed stirred
Body dissolves in a solvent；
Step 2: temperature is increased to assigned temperature, drips the weak solution of initiator subsequently, until having reacted
Entirely, copolymerization acrylic acid-acrylamide compolymer/nano granule；
Step 3: simultaneously graphene oxide is dispersed in water；
Step 4: after reaction to be polymerized is cooled to room temperature, is slowly added to graphite oxide in high-speed agitating process
Alkene dispersion liquid, i.e. obtains the dispersion liquid of lubricating function nano-particle, utilizes the graphene oxide electrostatic phase with it
Interaction, is assembled in nano grain surface by graphene oxide, and the material made has the water dispersible of excellence,
Can be mutually compatible with various water-base resins.
In described step one acrylic monomer can be acrylic acid, acrylic acid methyl ester., ethyl acrylate, third
Olefin(e) acid butyl ester, Isobutyl 2-propenoate, Hexyl 2-propenoate, Isooctyl acrylate monomer, lauryl acrylate, propylene
Acid benzyl ester, cyclohexyl acrylate, perfluoroalkyl acrylate, hydroxy ethyl phosphate ester, acrylic acid are different
Norbornene ester, acrylic acid oxolane methyl ester, methacrylic acid, methyl methacrylate, methacrylic acid second
Ester, butyl methacrylate, isobutyl methacrylate, methacrylic acid ester, Isooctyl acrylate monomer,
At least one group in lauryl methacrylate, isobornyl methacrylate, cyclohexyl methacrylate
Become.
In described step one acrylic monomer can be acrylamide, N hydroxymethyl acrylamide any one
Plant and arbitrary proportion combines.
In described step one, solvent can be ethanol, isopropanol, n-butyl alcohol, butyl glycol ether, ethylene glycol first
Ether, ethylene glycol, propylene glycol, propylene glycol monomethyl ether, propylene glycol methyl ether acetate, propylene-glycol ethyl ether, different
At least 2 kinds of arbitrary proportion mixing in propanol, n-butyl alcohol；
In described step one, emulsifying agent can be alkylphenol polyoxyethylene class, Ben-zylphenol Polyoxyethyl Ether emulsifying
Any one of agent, preferably OP-10.
In described step one, dispersant can be alkylsulfonate, alkylbenzenesulfonate, cetyl trimethyl
Ammonium bromide, Polyethylene Glycol, hydroxymethyl cellulose, sodium carboxymethylcellulose pyce, ethyl cellulose, methylcellulose,
Carboxymethyl cellulose, hydroxypropyl methyl cellulose, polyvinylpyrrolidone, polyvinyl alcohol, TritonX appoint
Anticipate one or more combination.
High speed dispersion stir speed (S.S.) described in step one is 100～600 revs/min, stirs 5～30 minutes.
Reaction temperature described in step 2 is 60～120 degree, is incubated 30 minutes～2 hours.
But initiator azo-bis-isobutyl cyanide described in step 2, azo-bis-iso-dimethyl, azo two are different
Heptonitrile, benzoyl peroxide, cumyl peroxide, methyl ethyl ketone peroxide, peroxy dicarbonate two hexamethylene
Any one or combination in fat, tert-butyl hydroperoxide, weak solution concentration is 0.5～10%.
Graphene oxide dispersion concentration described in step 3 is the aqueous dispersions of 0.01～5%, can use ultrasonic,
Grinding, high pressure homogenize, the technique of high speed shear realize dispersion.
Step 4 high speed mixing speed is 500～4000 revs/min, stirs 30 minutes～5 hours.
A kind of lubricating function nanoparticulate dispersion is applied in aqueous lubricating functional paint, lubricating function nanometer
Particle dispersion mixes with water-base resin, weak reductant, auxiliary agent, cosolvent, water, can prepare multiple
Aqueous lubricating functional paint, wherein lubricating function nanoparticulate dispersion 0.5～10%, water-base resin 40～80%,
Weak reductant 0.01～1%, auxiliary agent 1～5%, cosolvent 5～20%, remaining is water, during use, can use
Spraying, roller coating, blade coating, the film-forming process of silk screen printing, use the curing process that baking the affected part after applying some drugs is roasting, temperature be 80～
180 degree, toast 5～30 minutes.
Described water-base resin can be water soluble acrylic acid, aqueous polyurethane, aqueous epoxy resins, water alcohol acid
Any one of resin, preferably waterborne polyurethane resin.
Described weak reductant can be any one of ascorbic acid, citric acid, oxalic acid etc..
Referring specifically to following example:
Embodiment one:
1) in 400 revs/min of high-speed stirred by the polyvinylpyrrolidone of 1 part, 2 parts of OP-10,30 parts
Acrylic acid, 20 parts of acrylamides are dissolved in the mixed solvent of 40 parts of butyl glycol ethers and isopropanol (1:1)；
2) temperature is increased to 90 degree, then begins to the azo-bis-isobutyl cyanide weak solution 5% of dropping, react 1
Hour；
3) graphene oxide using ultrasonic disperse technique be dispersed in water simultaneously, preparation concentration is 1%
Dispersion liquid；
4), after reaction to be polymerized is cooled to room temperature, it is slowly added to receive in 1500 revs/min of high-speed agitating process
The graphene oxide dispersion of rice grain dispersion liquid total amount 20%, stirs 1 hour, i.e. obtains profit after standing froth breaking
The dispersion liquid of sliding function nano granule.
5) by 5 parts of lubricating function nanoparticulate dispersion and 60 parts of aqueous polyurethanes, 1 part of citric acid, 5 parts
Auxiliary agent, 15 parts of cosolvents and 14 parts of water mixing, prepare self-lubricating function coating；
6) by self-lubricating function spray painting film forming, toast 10 minutes under 120 degree and obtain having profit certainly
The coating of sliding function.
Testing the coating of the present embodiment, result shows, lubrication nano-particle is formed effectively on surface
Micro-convex structure, coefficient of friction 0.25～0.31.
Embodiment two:
1) in 400 revs/min of high-speed stirred by the polyvinylpyrrolidone of 1 part, 2 parts of OP-10,10 parts
Methacrylic acid, 40 parts of N hydroxymethyl acrylamides are dissolved in 40 parts of butyl glycol ethers and propylene glycol monomethyl ether
(1:1) in mixed solvent；
2) temperature is increased to 90 degree, then begins to the azo-bis-isobutyl cyanide weak solution 5% of dropping, react 1
Hour；
3) graphene oxide using ultrasonic disperse technique be dispersed in water simultaneously, preparation concentration is 1%
Dispersion liquid；
4), after reaction to be polymerized is cooled near room temperature, slowly add in 1500 revs/min of high-speed agitating process
Enter the graphene oxide dispersion of nanoparticulate dispersion total amount 20%, stir 1 hour, i.e. obtain after standing froth breaking
Obtain the dispersion liquid of lubricating function nano-particle.
5) by 5 parts of lubricating function nanoparticulate dispersion and 60 parts of aqueous polyurethanes, 1 part of oxalic acid, 5 parts help
Agent, 15 parts of cosolvents and 14 parts of water mixing, prepare self-lubricating function coating；
6) by self-lubricating function spray painting film forming, toast 10 minutes under 120 degree and obtain having profit certainly
The coating of sliding function.
Testing the coating of the present embodiment, result shows, lubrication nano-particle is formed effectively on surface
Micro-convex structure, coefficient of friction 0.18～0.21.
Embodiment three:
1) in 400 revs/min of high-speed stirred by the polyvinylpyrrolidone of 1 part, 2 parts of OP-10,40 parts
Acrylic acid methyl ester., 10 parts of N hydroxymethyl acrylamides are dissolved in 40 parts of butyl glycol ethers and isopropanol (1:1)
Mixed solvent in；
2) temperature is increased to 90 degree, then begins to the azo-bis-isobutyl cyanide weak solution 5% of dropping, react 1
Hour；
3) graphene oxide using ultrasonic disperse technique be dispersed in water simultaneously, preparation concentration is 1%
Dispersion liquid；
4), after reaction to be polymerized is cooled near room temperature, slowly add in 1500 revs/min of high-speed agitating process
Enter the graphene oxide dispersion of nanoparticulate dispersion total amount 20%, stir 1 hour, i.e. obtain after standing froth breaking
Obtain the dispersion liquid of lubricating function nano-particle；
5) by 5 parts of lubricating function nanoparticulate dispersion and 60 parts of aqueous polyurethanes, 1 part of ascorbic acid, 5
Part auxiliary agent, 15 parts of cosolvents and 14 parts of water mixing, prepare self-lubricating function coating；
6) by self-lubricating function spray painting film forming, toast 10 minutes under 120 degree and obtain having profit certainly
The coating of sliding function.
Testing the coating of the present embodiment, result shows, lubrication nano-particle is formed effectively on surface
Micro-convex structure, coefficient of friction 0.30～0.35.
Embodiment four:
1) in 400 revs/min of high-speed stirred by the polyvinylpyrrolidone of 1 part, 2 parts of OP-10,30 parts
Acrylic acid, 20 parts of acrylamides are dissolved in the mixed solvent of 40 parts of butyl glycol ethers and isopropanol (1:1)；
2) temperature is increased to 90 degree, then begins to the azo-bis-isobutyl cyanide weak solution 5% of dropping, react 1
Hour；
3) graphene oxide using ultrasonic disperse technique be dispersed in water simultaneously, preparation concentration is 1%
Dispersion liquid；
4), after reaction to be polymerized is cooled near room temperature, slowly add in 1500 revs/min of high-speed agitating process
Enter the graphene oxide dispersion of nanoparticulate dispersion total amount 20%, stir 1 hour, i.e. obtain after standing froth breaking
Obtain the dispersion liquid of lubricating function nano-particle.
5) by 5 parts of lubricating function nanoparticulate dispersion and 60 parts of aqueous polyurethanes, 1 part of ascorbic acid, 5
Part auxiliary agent, 15 parts of cosolvents and 14 parts of water mixing, prepare self-lubricating function coating；
6) by self-lubricating function spray painting film forming, toast 10 minutes under 120 degree and obtain having profit certainly
The coating of sliding function.
Testing the coating of the present embodiment, result shows, lubrication nano-particle is formed effectively on surface
Micro-convex structure, coefficient of friction 0.21～0.25.
Comparative example one:
Comparative example one is essentially identical with embodiment one, and difference is not add graphene oxide,
Prepare nano lubricating coating, after film forming, coefficient of friction 0.72～0.77.
As seen from the above embodiment, the nanoparticulate dispersion lubricant effect that the present invention makes is notable, safety collar
Protect, more can meet the demand in market.
The ultimate principle of the present invention, principal character and advantages of the present invention have more than been shown and described.The industry
Skilled person will appreciate that, the present invention is not restricted to the described embodiments, in above-described embodiment and description
The principle of the simply present invention described, without departing from the spirit and scope of the present invention, the present invention also can
Having various changes and modifications, these changes and improvements both fall within claimed invention.Application claims
Protection domain is defined by appending claims and equivalent thereof.
Claims (10)
1. a lubricating function nanoparticulate dispersion, it is characterised in that: described dispersion liquid includes following quality
The component of number:
Described lubricating function nano-particle is by acrylic monomer and the copolymer nano of acrylamide monomers
Grain forms with graphene oxide, and in lubricating function nano-particle, each component percentage is as follows: acrylic acid-the third
Acrylamide copolymer nano granule 80～95%, graphene oxide 5～20%；
The particle diameter 2～200nm of acrylic acid-acrylamide copolymer nano-particle；
Wherein, graphene oxide is wrapped in the surface of acrylic acid-acrylamide copolymer nano-particle.
A kind of lubricating function nanoparticulate dispersion the most according to claim 1, it is characterised in that: institute
Stating acrylic monomer can be acrylic acid, acrylic acid methyl ester., ethyl acrylate, butyl acrylate, propylene
Acid isobutyl ester, Hexyl 2-propenoate, Isooctyl acrylate monomer, lauryl acrylate, benzyl acrylate, acrylic acid
Cyclohexyl, perfluoroalkyl acrylate, hydroxy ethyl phosphate ester, isobornyl acrylate, acrylic acid
Oxolane methyl ester, methacrylic acid, methyl methacrylate, ethyl methacrylate, methacrylic acid
Butyl ester, isobutyl methacrylate, methacrylic acid ester, Isooctyl acrylate monomer, lauryl
At least one composition in ester, isobornyl methacrylate, cyclohexyl methacrylate；
Described acrylamide monomers can be acrylamide, N hydroxymethyl acrylamide any one and appoint
Meaning ratio combines；
Described solvent can be ethanol, isopropanol, n-butyl alcohol, butyl glycol ether, ethylene glycol monomethyl ether, second two
Alcohol ether, propylene glycol, propylene glycol monomethyl ether, propylene glycol methyl ether acetate, propylene-glycol ethyl ether, isopropanol, just
At least 2 kinds of arbitrary proportion mixing in butanol.
A kind of lubricating function nanoparticulate dispersion the most according to claim 1, it is characterised in that: institute
State emulsifying agent be alkylphenol polyoxyethylene class, Ben-zylphenol Polyoxyethyl Ether emulsifying agent any one, preferably
For OP-10；
Described dispersant is alkylsulfonate, alkylbenzenesulfonate, cetyl trimethylammonium bromide, poly-second
Glycol, hydroxymethyl cellulose, sodium carboxymethylcellulose pyce, ethyl cellulose, methylcellulose, carboxymethyl cellulose
Element, hydroxypropyl methyl cellulose, polyvinylpyrrolidone, polyvinyl alcohol, TritonX any one or two
Plant above combination；
Described initiator is azo-bis-isobutyl cyanide, azo-bis-iso-dimethyl, 2,2'-Azobis(2,4-dimethylvaleronitrile), peroxide
Change benzoyl, cumyl peroxide, methyl ethyl ketone peroxide, peroxy dicarbonate two hexamethylene fat, the tert-butyl group
Any one or combination in hydrogen peroxide.
The system of a kind of lubricating function nanoparticulate dispersion the most according to any one of claim 1 to 3
Preparation Method, it is characterised in that: comprise the following steps:
Step one: by dispersant, emulsifying agent, acrylic monomer, acrylic amide list in high-speed stirred
Body dissolves in a solvent；
Step 2: temperature is increased to assigned temperature, drips the weak solution of initiator subsequently, until having reacted
Entirely；
Step 3: simultaneously graphene oxide is dispersed in water；
Step 4: after reaction to be polymerized is cooled to room temperature, is slowly added to graphite oxide in high-speed agitating process
Alkene dispersion liquid, i.e. obtains lubricating function nanoparticulate dispersion.
The preparation method of a kind of lubricating function nanoparticulate dispersion the most according to claim 4, it is special
Levy and be: high speed dispersion stir speed (S.S.) described in step one is 100～600 revs/min, stir 5～30 points
Clock.
The preparation method of a kind of lubricating function nanoparticulate dispersion the most according to claim 4, it is special
Levy and be: reaction temperature described in step 2 is 60～120 degree, be incubated 30 minutes～2 hours.
The preparation method of a kind of lubricating function nanoparticulate dispersion the most according to claim 4, it is special
Levy and be: graphene oxide dispersion concentration described in step 3 is the aqueous dispersions of 0.01～5%, can use
Ultrasonic, grinding, high pressure homogenize, the technique of high speed shear realize dispersion；Step 4 high speed mixing speed is
500～4000 revs/min, stir 30 minutes～5 hours.
8. according to a kind of lubricating function nanoparticulate dispersion described in any one of claims 1 to 3 in aqueous
Lubricating function coating is applied, it is characterised in that: lubricating function nanoparticulate dispersion and water-base resin, weak
Reducing agent, auxiliary agent, cosolvent, water mix, and can prepare multiple aqueous lubricating functional paint, Qi Zhongrun
Sliding function nano particle dispersion 0.5～10%, water-base resin 40～80%, weak reductant 0.01～1%, helps
Agent 1～5%, cosolvent 5～20%, remaining is water, during use, can use spraying, roller coating, blade coating, silk
The film-forming process of wire mark brush, uses the curing process that baking the affected part after applying some drugs is roasting, and temperature is 80～180 degree, toasts 5～30
Minute.
Application the most according to claim 8, it is characterised in that: described water-base resin can be aqueous third
Olefin(e) acid, aqueous polyurethane, aqueous epoxy resins, aqueous alkide resin any one, preferably aqueous gather
Urethane resin.
Application the most according to claim 8, it is characterised in that: described weak reductant can be anti-bad
Any one in hematic acid, citric acid, oxalic acid.
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