CN108468013A - A kind of preparation method of wear-resisting hydrophobic coating - Google Patents
A kind of preparation method of wear-resisting hydrophobic coating Download PDFInfo
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- CN108468013A CN108468013A CN201810663553.3A CN201810663553A CN108468013A CN 108468013 A CN108468013 A CN 108468013A CN 201810663553 A CN201810663553 A CN 201810663553A CN 108468013 A CN108468013 A CN 108468013A
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/134—Plasma spraying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
- B05D5/083—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface involving the use of fluoropolymers
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
Abstract
The invention belongs to hydrophobic coating technical field more particularly to a kind of preparation methods of wear-resisting hydrophobic coating, include at least following steps：Basis material is placed in solvent and carries out ultrasonic wave decontamination cleaning and drying, in case for use；Using Supersonic Plasma Spraying technology, micro-nano abrasion-proof structure coating is prepared in substrate material surface using Ni60 and WC 10Co 4Cr mixed-powders as raw material；With atomizing lance by polytetrafluoroethylene (PTFE) mixed solution even application on structure coating surface, then toast to get.Compared with the existing technology, the present invention uses Supersonic Plasma Spraying technology to carry out micro-nano structure rough coatings spraying with mixed-powder, the performances such as the toughness and hardness of the two is given full play to, to obtain the preferable micro-nano rough surface of wearability.Low-surface-energy modification is carried out in micro-nano rough surface using PTFE mixed solutions, gives full play to PTFE low costs and the characteristics such as low-surface-energy, corrosion-resistant.
Description
Technical field
The invention belongs to hydrophobic coating technical field more particularly to a kind of preparation methods of wear-resisting hydrophobic coating.
Background technology
Hydrophobic phenomenon is a kind of surface dewetting phenomenon in nature.When water droplet rests on horizontal positioned hydrophobic surface
When, the static contact angle of water droplet is higher than 90 °, and the shape of water droplet almost keeps the ball of almost Perfect as aerial weightless water droplet
Shape, therefore hydrophobic surface shows extremely strong hydrophobicity.Since the microstructure of lotus leaf surface is reported, surface of solids institute
The wetting behavior having is referred to as hydrophobicity (also known as " lotus leaf effect "), it causes material and grinds the great interest of the person of making internal disorder or usurp and wide
General concern.Due to the specific physique of hydrophobic material, there is good answer in automatically cleaning, antireflection, Micro Fluid Transfer etc.
It is even more the largely report in terms of super-hydrophobic occur, including water-oil separating, fluid drag-reduction, surface are certainly in recent years with foreground
Reparation and the protection etc. of metal surface.It is current grind to make internal disorder or usurp show by constructing micro nano structure in material surface and being subject to low table
The modification of face free energy material, so that it may so that material surface wettability significantly changes.
Many animals and plants in nature all show hydrophobic performance, such as lotus leaf goes out mud without contaminating, and water skipper can
It freely walks on the water surface, butterfly's wing surface will not be soaked by rainwater, these biological phenomenas, which cause, largely grinds the person's of making internal disorder or usurp
Concern.The reason of by making internal disorder or usurp to deeply grinding for these natural phenomenas, finding to make it have ultra-hydrophobicity is since its surface is deposited
In special micro nano structure, air film is generated at solid and liquid surface, is reached to hinder the water droplet infiltration surface of solids
Hydrophobic effect.Two key factors for preparing hydrophobic surface have been summed up on this basis：Special surface micronano structure and
Low surface free energy substance.Although it has been reported that a variety of methods for preparing hydrophobic surface, the micro nano structure of hydrophobic surface
But it is difficult to build, this seriously inhibits the extensive uses of hydrophobic surface.Such as solution etches metallic copper, aluminium made of metal is for hydrophobic table
Face, method of electrostatic spinning prepare hydrophobic surface etc., these methods prepare micro nano structure surface bad mechanical property, by physics
Ultra-hydrophobicity or even finger can be lost after friction, and slightly touching may all cause surface texture to be destroyed, and chemistry is steady with environment
Qualitative poor, substrate limitation, by external impact rear surface be easy damage and fall off from substrate, in addition production cost height etc. this
A little applications and popularization for all limiting super hydrophobic surface.
So far, more and more grind the person of making internal disorder or usurp begin to focus on high mechanical strength and stability it is strong hard wear resistant it is super thin
The preparation of water surface.There is scholar that trifluoro propyl methylsiloxane is scattered in the aqueous solution of acetone and to deposit to 3D printing porous
The super hydrophobic surface of high mechanical properties has been finally obtained on material by the method for phase separation, water contact angle can reach 150 °,
This material also has corrosion-resistant, wear-resistant and high temperature resistance well simultaneously, but this aspect efficiency is low, of high cost.In addition,
There is scholar to use to compound polyurethane, epoxy resin and amido silicon oil, be prepared with micro-convex structure using phase disengagement method
Porous compound super-hydrophobic coat, but this method needs synthesis of polyurethane colloidal sol, technique is cumbersome, and hardening time is long, and should
Coating oil resistivity is poor, is easy, by oil pollution, ultra-hydrophobicity to be caused to be destroyed.
In conclusion in order to make hydrophobic surface be more broadly applicable in actual production life, it is urgently to be resolved hurrily at present
Problem be prepare high mechanical strength, it is wear-resistant, have good chemical and environmental stability, preparation method simply, not by substrate
The hydrophobic surface of limitation.Therefore, explore how to enhance the mechanical strength of hydrophobic surface structure to realize its extensive practical application
It is now subjected to the extensive concern of all circles' researcher.
Wetability and daily life and industrial and agricultural production etc. are closely bound up, for example, waterproof coating, it is antifog, antifouling,
The fields such as liquid Lossless transport, mineral screening.Most hydrophobic surface exhibits go out excellent performance and are widely applied value.So
And hydrophobic material, when being destroyed by external mechanical power, its micro nano structure is easy to be damaged, it is difficult to keep good hydrophobic
Characteristic, this limits the practical application of hydrophobic material significantly.In recent years, many grinds the person of making internal disorder or usurp and finds enhancing super hydrophobic material antifriction scouring
The approach of damage property has following several：(1) micro nano structure is constructed, super-hydrophobicity is maintained by stable micro nano structure；(2) it selects
With the material of high mechanical strength, the wear resistance of super hydrophobic material is improved；(3) anti-attrition wear-resistant material is selected, super-hydrophobic material is enhanced
The wear resistence of material.
The hydrophobic material surface micronano structure constructed using conventional method is usually more fragile, in use, if
When hydrophobic material is by external mechanical power, micro nano structure is more easily damaged, it is difficult to keep good super-hydrophobicity, this is to super
The application of hydrophobic material causes very big obstruction.The discovery that makes internal disorder or usurp is ground, the wearability of composite micro-nano rice structure is significantly larger than single
The wearability of micron order or nanoscale structures.There is scholar by spraying dodecyltrimethoxysilane/hollow mesoporous dioxy
SiClx nano-particle and dimethyl silicone polymer have prepared the sustainable super hydrophobic surface of mechanical resistant abrasion.Even if this surface
By the grits wear in 1000 periods, remain to maintain its super-hydrophobicity.Why ground by multiple cycle on this surface
Hydrophobicity can also be maintained after damage and then to be caused new thick since the cavity of hollow mesoporous silicon dioxide nano particle is exposed
The formation of roughening structure, therefore maintain the suitable roughness of coating surface and preferable super-hydrophobicity.Some scholars are by nature
The inspiration of lotus leaf effect in boundary etches dacron with alkaline solution, is modified and nano SiO 2 particle in conjunction with silicon fluoride
Deposition, has prepared the super hydrophobic surface of coarse structure.Even if tear strength causes greatly the nano silicon dioxide that surface is modified very much
Particle is consumed, and the coarse fabric surface of silicon fluoride modification remains to play good hydrophobic effect.Meanwhile there is scholar to study and finding
It selects mechanical strength polyurethane as binder, the wearability for doing hydrophobic material can be put forward.They are using porous aluminium sheet as mould
Plate constructs out micro/nano level coarse structure on the excellent elastic polyurethane resin surface of mechanical performance, obtains having certain wear-resisting
The polymer hydrophobic surface of property.But above-mentioned these preparation methods or comprising complicated synthesis step or using special
Reagent or equipment, this all causes limitation to their actual production and application.
Since traditional hydrophobic material is vulnerable to mechanical failure in practical applications, present more and more researchers
Endeavour to grind the super hydrophobic material with wear-resisting property that makes internal disorder or usurp.The method for the super hydrophobic material for preparing wear resistance at present is main
Have following several：Sol-gel method, dip coating, vapour deposition process, template, etching method.Biology is inherent in nature
Property promote the mankind to study biomimetic material, the wherein special hydrophobic performance of lotus leaf surface causes people extensive
Concern.This special wettability can not only assign the surface of solids excellent water repellency, and in Metal surface anti-corrosion, building
Surface soiling, it is anti-freeze under low temperature environment, prevent in ocean the fields such as the seawater of bottom of ship and microbiologic(al) corrosion to have huge
Application prospect.But for most of hydrophobic surface since its micro nano structure mechanical performance is poor, surface texture is fragile, usually can
It is destroyed due to the impact of external force or the mechanisms such as friction in the external world, loses its super-hydrophobicity or even some preparation sides
Itself existing defect of method, more seriously hinders the extensive use of super hydrophobic surface.
In view of this, the present invention is intended to provide a kind of preparation method of wear-resisting hydrophobic coating, to overcome existing hydrophobic coating
The shortcomings that wearing no resistance.
Invention content
It is an object of the invention to：In view of the deficiencies of the prior art, a kind of preparation method of wear-resisting hydrophobic coating is provided,
The shortcomings that overcome existing hydrophobic coating to wear no resistance.
In order to achieve the above object, the present invention adopts the following technical scheme that：
A kind of preparation method of wear-resisting hydrophobic coating includes at least following steps：
The first step, basis material pre-treatment：Basis material is placed in solvent and carries out ultrasonic wave decontamination cleaning and drying, with
It is standby for use；
Second step, micro nano structure wear-resistant coating are constructed：Using Supersonic Plasma Spraying technology, with the 3 of reunion~
45 μm of the non-self-fluxing alloyed powders of Ni60 and WC-10Co-4Cr mixed-powders prepares for raw material in substrate material surface micro-nano
Abrasion-proof structure coating；
Third walks, the modification of coating surface low-surface-energy material：Polytetrafluoroethylene (PTFE) mixed solution is uniformly sprayed with atomizing lance
Be coated in micro-nano abrasion-proof structure coating surface, then toast to get.
A kind of improvement of preparation method as the wear-resisting hydrophobic coating of the present invention, described matrix material are metal or ceramic material
Material.
A kind of improvement of preparation method as the wear-resisting hydrophobic coating of the present invention, the solvent are gasoline, acetone and alcohol
At least one of.
A kind of improvement of preparation method as the wear-resisting hydrophobic coating of the present invention, in second step, Supersonic Plasma Spraying
Parameter be：Electric current is 90-130A, power 50-80kW, compressed air 0.15-0.35MPa, and powder feeding carrier gas Ar is 5-
8L/min, powder feeding rate are 30-50g/min, propane flow 1-3L/min, and spray is away from for 300-500mm.
A kind of improvement of preparation method as the wear-resisting hydrophobic coating of the present invention, in the spraying process of second step, matrix material
Expect that the temperature on surface is controlled at 110 DEG C -130 DEG C.
A kind of improvement of preparation method as the wear-resisting hydrophobic coating of the present invention, during third walks, by mass percentage, institute
It includes following components to state polytetrafluoroethylene (PTFE) mixed solution：PTFE emulsion 45~55%, epoxy acrylate 6~14%, SiO2It is molten
Glue 10~20%, absolute ethyl alcohol 3-12%, n-butanol 2-5%, surplus are deionized water.
A kind of improvement of preparation method as the wear-resisting hydrophobic coating of the present invention, the polytetrafluoroethylene (PTFE) mixed solution configuration
After the completion, 30-90min is stirred under the low pressure of 0.1-0.5Pa by defoaming machine to carry out de-bubble and stand.
A kind of improvement of preparation method as the wear-resisting hydrophobic coating of the present invention, during third walks, the pressure of atomizing lance spraying
Power is 0.2-1MPa, and spray gun movement speed is 100-300mm/s.
A kind of improvement of preparation method as the wear-resisting hydrophobic coating of the present invention, during third walks, baking condition is：120-
170 DEG C of heat preservation 0.5-3h, then heat to 350~420 DEG C of heat preservation 1-5h, and heating rate is 5-15 DEG C/min.
Currently, manually prepare high contact angle, low slide angle hydrophobic coating method it is more and more, it is however generally that all follow
Two strategies：First, micro-nano coarse structure is constructed, second is that being modified rough surface using low-surface-energy material.However,
The hydrophobic coating prepared due to traditional technology there are bad mechanical property, hardness is low, be easy to be corroded, surface abrasion resistance difference etc. lacks
Point, therefore urgent problem to be solved is exactly to prepare the durability with the performances stabilization such as hardness is high, corrosion-resistant, wear-resistant at present
Wear-resisting hydrophobic material.
For micro-nano durable roughened surface in wear-resisting hydrophobic coating material selection and construct, the material that the present invention uses is
Ni60 and WC-10Co-4Cr mixing materials, the method for constructing micro-nano structure durable roughened surface are Supersonic Plasma Spraying.
Ni60 alloy powders can be divided into self-fluxing alloyed powder and non-self-fluxing alloyed powder.Non- self-fluxing nature based powders refer to being free of B, Si
Element, this kind of powder have the characteristics that high tenacity, rub resistance, corrosion-resistant.WC is referred to as " industrial tooth as cemented carbide material
Tooth ", wherein hard particles are combined with alloy powder, and synthesis WC-10Co-4Cr materials are used as abrasion-resistant coating material, show good
Good effect.WC-10Co-4Cr has many advantages, such as high rigidity, high tenacity, rub resistance, corrosion-resistant.WC particle at high temperature can quilt
The metal baths such as Ni, Co, Cr soak well, so a certain amount of WC-10Co- is added in the non-self-fluxing alloy of high rigidity Ni bases
4Cr high is hard, high-ductility powder, the superhard alloy coating of diffusion-type containing WC-10Co-4Cr can be formed, to substantially increase Ni60 bases
Red hardness, wearability and the inoxidizability of alloy.WC-10Co-4Cr particles have superior property with other Carbide Phases ratios
Energy.
When constructing micro nano structure wear-resistant coating, present invention employs use Supersonic Plasma Spraying technology.The skill
Art works in atmospheric environment, and using power up to the plasma gun of 180kW, spray gun structure is special three-electrode structure
(cathode, dynode and anode), spray gun is using compressed air and a small amount of propane flammable gas as plasma working gas.When point rifle in rifle
Electric arc is formed between cathode and dynode, and electric arc is transferred quickly to anode nozzle under compressed air purging, is formed simultaneously
Gas ions jet stream.Propane is re-filled with after jet stability into spray gun, violent explosive reaction occurs in spray gun for propane at this time.
Since distance increases between spray gun cathode and anode, arc voltage greatly increases in rifle, can make spray gun under reduced-current in this way
The very high plasma of power is formed, and under propane explosive reaction effect, the energy of plasma jet is obtained again into one
The raising of step.Supersonic Plasma Spraying carries out under atmospheric environment, and jet energy density is very high, plasma temperature energy
More than 10000 DEG C, the speed of jet stream is up to 3-5 times of velocity of sound.When spraying, the plasma of high temperature can make Ni60 and WC-10Co-
Metallic element gasifies in 4Cr, and the metallic element solidification of gasification can form micro-nano structure coating in coating surface.PTFE (polytetrafluoros
Ethylene) for lotion as most common hydrophobic material in industry, it has the property such as ultra-low surface energy and good acid-alkali-corrosive-resisting
Can, use PTFE to have many advantages, such as low cost, high efficiency as the modification of rough surface low-surface-energy material.
In short, compared with the existing technology, the present invention uses Supersonic Plasma Spraying technology to carry out micro-nano with mixed-powder
Rustic coating spraying gives full play to the performances such as the toughness and hardness of the two, to obtain the coarse table of the preferable micro-nano of wearability
Face.Low-surface-energy modification is carried out in micro-nano rough surface using PTFE mixed solutions, gives full play to PTFE low costs and low
The characteristics such as surface energy, corrosion-resistant.The above wear-resisting hydrophobic coating can take into account high-wearing feature and high hydrophobicity, preparation method is efficient,
It is at low cost, it can industrialized production.
Description of the drawings
Fig. 1 is that micro nano structure wear-resistant coating surface electronic scanning prepared by 1 moderate supersonic speed plasma spraying of embodiment is shone
Piece.
Fig. 2 is the hydrophobic performance test result of hydrophobic coating in embodiment 1.
Fig. 3 is the wear-resisting property characterization result of the wear-resisting hydrophobic coating of embodiment 1.
Specific implementation mode
The wear-resisting water delivery coating production of the present invention is described further with reference to specific embodiment.
Embodiment 1
A kind of preparation method of wear-resisting hydrophobic coating is present embodiments provided, is included the following steps：
The first step carries out ultrasonic wave decontamination clearly and drying with gasoline, acetone and alcohol successively using metal material as matrix,
In case for use；
Second step is mixed using Supersonic Plasma Spraying technology with 3~45 μm of Ni60 and WC-10Co-4Cr of reunion
Powder is that raw material prepares micro nano structure abrasion-proof structure coating in substrate material surface；In spraying process, substrate material surface
Temperature is controlled at 120 DEG C or so, and spray parameters are as follows：Electric current is 90A, power 50kW, compressed air 0.15MPa, powder feeding
Carrier gas Ar is 5L/min, and powder feeding rate is 30g/min, propane flow 1L/min, and spray is away from for 300mm；
Third walks, by PTFE (polytetrafluoroethylene (PTFE)) lotion, epoxy acrylate, SiO2Colloidal sol, absolute ethyl alcohol, deionization
Water, n-butanol are configured to mixed solution according to a certain volume, and stirring 60min under 0.1Pa low pressure by defoaming machine carries out de-bubble
And stand, using atomizing lance, the mixed solution after froth in vacuum, the even application under 0.2MPa pressure is applied in micro nano structure
Layer surface, spray gun movement speed are 200 mm/s, and the volume proportion of each constituent of mixed solution described in above-mentioned steps is：
PTFE (polytetrafluoroethylene (PTFE)) lotion 45%, epoxy acrylate 6%, SiO2Colloidal sol 10%, absolute ethyl alcohol 3%, n-butanol 2%,
Surplus is ionized water.The coating for being coated with PTFE mixed solutions is placed in air atmosphere stove and is toasted, baking condition is：
150 DEG C of heat preservation 1h, 380 DEG C of heat preservation 2h, heating rate is 10 DEG C/min.
Using 1 moderate supersonic speed plasma spraying technology of embodiment, using Ni60 and WC-10Co-4Cr mixed-powders as raw material,
The micro-nano abrasion-proof structure coating morphology prepared is as shown in Figure 1, as seen from the figure, coating surface contains a large amount of micro-nano
Crystal grain.The micro-nano structure that Supersonic Plasma Spraying is constructed as low-surface-energy material using PTFE (polytetrafluoroethylene (PTFE)) mixed solutions
Coating surface is surface modified, and the angle of wetting of coating surface is 155.4 ° after modification, shows good hydrophobic performance, is such as schemed
Shown in 2.Friction and wear test is carried out to hydrophobic coating, coating 3-D patterns after test are as shown in figure 3, as seen from the figure, coating
Grind that road is clear, depth as shallow, coating shows good wear-resisting property without peeling.
Embodiment 2
A kind of preparation method of wear-resisting hydrophobic coating is present embodiments provided, is included the following steps：
The first step carries out ultrasonic wave decontamination clearly and drying with gasoline, acetone and alcohol successively using metal material as matrix,
In case for use；
Second step is mixed using Supersonic Plasma Spraying technology with 3~45 μm of Ni60 and WC-10Co-4Cr of reunion
Powder is that raw material prepares micro nano structure abrasion-proof structure coating in substrate material surface；In spraying process, substrate material surface
Temperature is controlled at 115 DEG C or so, and spray parameters are as follows：Electric current is 100A, power 60kW, compressed air 0.20MPa, powder feeding
Carrier gas Ar is 5 L/min, and powder feeding rate is 40g/min, propane flow 2L/min, and spray is away from for 400mm；
Third walks, by PTFE (polytetrafluoroethylene (PTFE)) lotion, epoxy acrylate, SiO2Colloidal sol, absolute ethyl alcohol, deionization
Water, n-butanol are configured to mixed solution according to a certain volume, and stirring 70min under 0.3Pa low pressure by defoaming machine carries out de-bubble
And stand, using atomizing lance, the mixed solution after froth in vacuum, the even application under 0.5MPa pressure is applied in micro nano structure
Layer surface, spray gun movement speed are 150 mm/s, and the volume proportion of each constituent of mixed solution described in above-mentioned steps is：
PTFE (polytetrafluoroethylene (PTFE)) lotion 50%, epoxy acrylate 7%, SiO2Colloidal sol 12%, absolute ethyl alcohol 5%, n-butanol 3%,
Surplus is deionized water.The coating for being coated with PTFE mixed solutions is placed in air atmosphere stove and is toasted, baking condition
For：130 DEG C of heat preservation 2h, 400 DEG C of heat preservation 1.5h, heating rate is 8 DEG C/min.
Embodiment 3
A kind of preparation method of wear-resisting hydrophobic coating is present embodiments provided, is included the following steps：
The first step carries out ultrasonic wave decontamination clearly and drying with gasoline, acetone and alcohol successively using metal material as matrix,
In case for use；
Second step is mixed using Supersonic Plasma Spraying technology with 3~45 μm of Ni60 and WC-10Co-4Cr of reunion
Powder is that raw material prepares micro nano structure abrasion-proof structure coating in substrate material surface；In spraying process, substrate material surface
Temperature is controlled at 125 DEG C or so, and spray parameters are as follows：Electric current is 110A, power 70kW, compressed air 0.25MPa, powder feeding
Carrier gas Ar is 7 L/min, and powder feeding rate is 40g/min, propane flow 2L/min, and spray is away from for 400mm；
Third walks, by PTFE (polytetrafluoroethylene (PTFE)) lotion, epoxy acrylate, SiO2Colloidal sol, absolute ethyl alcohol, deionization
Water, n-butanol are configured to mixed solution according to a certain volume, and stirring 40min under 0.3Pa low pressure by defoaming machine carries out de-bubble
And stand, using atomizing lance, the mixed solution after froth in vacuum, the even application under 0.6MPa pressure is applied in micro nano structure
Layer surface, spray gun movement speed are 250 mm/s, and the volume proportion of each constituent of mixed solution described in above-mentioned steps is：
PTFE (polytetrafluoroethylene (PTFE)) lotion 50%, epoxy acrylate 8%, SiO2Colloidal sol 11%, absolute ethyl alcohol 5%, n-butanol 4%,
Surplus is deionized water.The coating for being coated with PTFE mixed solutions is placed in air atmosphere stove and is toasted, baking condition
For：150 DEG C of heat preservation 2.5h, 370 DEG C of heat preservation 3h, heating rate is 12 DEG C/min.
Embodiment 4
A kind of preparation method of wear-resisting hydrophobic coating is present embodiments provided, is included the following steps：
The first step carries out ultrasonic wave decontamination clearly and drying with gasoline, acetone and alcohol successively using metal material as matrix,
In case for use；
Second step is mixed using Supersonic Plasma Spraying technology with 3~45 μm of Ni60 and WC-10Co-4Cr of reunion
Powder is that raw material prepares micro nano structure abrasion-proof structure coating in substrate material surface；In spraying process, substrate material surface
Temperature is controlled at 118 DEG C or so, and spray parameters are as follows：Electric current is 120A, power 70kW, compressed air 0.30MPa, powder feeding
Carrier gas Ar is 8L/min, and powder feeding rate is 45g/min, propane flow 3L/min, and spray is away from for 450mm；
Third walks, by PTFE (polytetrafluoroethylene (PTFE)) lotion, epoxy acrylate, SiO2Colloidal sol, absolute ethyl alcohol, deionization
Water, n-butanol are configured to mixed solution according to a certain volume, and stirring 50min under 0.4 Pa low pressure by defoaming machine carries out de-bubble
And stand, using atomizing lance, the mixed solution after froth in vacuum, the even application under 0.6MPa pressure is applied in micro nano structure
Layer surface, spray gun movement speed are 180mm/s, and the volume proportion of each constituent of mixed solution described in above-mentioned steps is：
PTFE (polytetrafluoroethylene (PTFE)) lotion 55%, epoxy acrylate 10%, SiO2Colloidal sol 15%, absolute ethyl alcohol 10%, n-butanol
5%, surplus is deionized water.The coating for being coated with PTFE mixed solutions is placed in air atmosphere stove and is toasted, is toasted
Condition is：145 DEG C of heat preservation 1.8h, 370 DEG C of heat preservation 2.5h, heating rate is 7 DEG C/min.
Embodiment 5
A kind of preparation method of wear-resisting hydrophobic coating is present embodiments provided, is included the following steps：
The first step carries out ultrasonic wave decontamination clearly and drying with gasoline, acetone and alcohol successively using metal material as matrix,
In case for use；
Second step is mixed using Supersonic Plasma Spraying technology with 3~45 μm of Ni60 and WC-10Co-4Cr of reunion
Powder is that raw material prepares micro nano structure abrasion-proof structure coating in substrate material surface；In spraying process, substrate material surface
Temperature is controlled at 127 DEG C or so, and spray parameters are as follows：Electric current is 90-130A, power 50-80kW, compressed air 0.15-
0.35MPa, powder feeding carrier gas Ar be 5-8L/min, powder feeding rate be 30-50g/min, propane flow 1-3L/min, spray away from for
300-500mm；
Third walks, by PTFE (polytetrafluoroethylene (PTFE)) lotion, epoxy acrylate, SiO2Colloidal sol, absolute ethyl alcohol, deionization
Water, n-butanol are configured to mixed solution according to a certain volume, stir 55min under 0.25Pa low pressure by defoaming machine and are removed
Steep and stand, using atomizing lance the mixed solution after froth in vacuum under 0.35MPa pressure even application in micro-nano knot
Structure coating surface, spray gun movement speed are 135mm/s, the volume proportion of each constituent of mixed solution described in above-mentioned steps
For：PTFE (polytetrafluoroethylene (PTFE)) lotion 48%, epoxy acrylate 9%, SiO2 colloidal sols 13%, absolute ethyl alcohol 7%, n-butanol
3.5%, surplus is deionized water.The coating for being coated with PTFE mixed solutions is placed in air atmosphere stove and is toasted, is dried
Roasting condition is：160 DEG C of heat preservation 1.1h, 410 DEG C of heat preservation 3.8h, heating rate is 13 DEG C/min.
Embodiment 6
A kind of preparation method of wear-resisting hydrophobic coating is present embodiments provided, is included the following steps：
The first step carries out ultrasonic wave decontamination clearly and drying with gasoline, acetone and alcohol successively using metal material as matrix,
In case for use；
Second step is mixed using Supersonic Plasma Spraying technology with 3~45 μm of Ni60 and WC-10Co-4Cr of reunion
Powder is that raw material prepares micro nano structure abrasion-proof structure coating in substrate material surface；In spraying process, substrate material surface
Temperature is controlled at 120 DEG C or so, and spray parameters are as follows：Electric current is 130A, power 80kW, compressed air 0.35MPa, powder feeding
Carrier gas Ar is 8L/min, and powder feeding rate is 50g/min, propane flow 3L/min, and spray is away from for 500mm；
Third walks, by PTFE (polytetrafluoroethylene (PTFE)) lotion, epoxy acrylate, SiO2Colloidal sol, absolute ethyl alcohol, deionization
Water, n-butanol are configured to mixed solution according to a certain volume, stir 70min under 0.15Pa low pressure by defoaming machine and are removed
Steep and stand, using atomizing lance the mixed solution after froth in vacuum under 0.45MPa pressure even application in micro-nano knot
Structure coating surface, spray gun movement speed are 170mm/s, the volume proportion of each constituent of mixed solution described in above-mentioned steps
For：PTFE (polytetrafluoroethylene (PTFE)) lotion 55%, epoxy acrylate 14%, SiO2Colloidal sol 20%, absolute ethyl alcohol 12%, positive fourth
Alcohol 5%, surplus are deionized water.The coating for being coated with PTFE mixed solutions is placed in air atmosphere stove and is toasted, is dried
Roasting condition is：155 DEG C of heat preservation 1h, 405 DEG C of heat preservation 2h, heating rate is 6 DEG C/min.
According to the disclosure and teachings of the above specification, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula carries out change and modification appropriate.Therefore, the invention is not limited in specific implementation modes disclosed and described above, to this
Some modifications and changes of invention should also be as falling into the scope of the claims of the present invention.In addition, although this specification
In used some specific terms, these terms are merely for convenience of description, does not limit the present invention in any way.
Claims (9)
1. a kind of preparation method of wear-resisting hydrophobic coating, which is characterized in that include at least following steps：
The first step, basis material pre-treatment：Basis material is placed in solvent and carries out ultrasonic wave decontamination cleaning and drying, in case waiting for
With；
Second step, micro nano structure wear-resistant coating are constructed：Using Supersonic Plasma Spraying technology, with 3~45 μm of reunion
The non-self-fluxing alloyed powders of Ni60 and WC-10Co-4Cr mixed-powders be raw material prepared in substrate material surface it is micro-nano wear-resisting
Structure coating；
Third walks, the modification of coating surface low-surface-energy material：Polytetrafluoroethylene (PTFE) mixed solution even application is existed with atomizing lance
Micro-nano abrasion-proof structure coating surface, then toast to get.
2. the preparation method of wear-resisting hydrophobic coating according to claim 1, which is characterized in that described matrix material is metal
Or ceramic material.
3. the preparation method of wear-resisting hydrophobic coating according to claim 1, which is characterized in that the solvent is gasoline, third
At least one of ketone and alcohol.
4. the preparation method of wear-resisting hydrophobic coating according to claim 1, which is characterized in that in second step, supersonic speed etc.
The parameter of plasma spray is：Electric current is 90-130A, power 50-80kW, compressed air 0.15-0.35MPa, powder feeding carrier gas
Ar is 5-8L/min, and powder feeding rate is 30-50g/min, propane flow 1-3L/min, and spray is away from for 300-500mm.
5. the preparation method of wear-resisting hydrophobic coating according to claim 1, which is characterized in that the spraying process of second step
In, the temperature of substrate material surface is controlled at 110 DEG C -130 DEG C.
6. the preparation method of wear-resisting hydrophobic coating according to claim 1, which is characterized in that in third step, by quality hundred
Divide than meter, the polytetrafluoroethylene (PTFE) mixed solution includes following components：PTFE emulsion 45~55%, epoxy acrylate 6~
14%, SiO2Colloidal sol 10~20%, absolute ethyl alcohol 3-12%, n-butanol 2-5%, surplus are deionized water.
7. the preparation method of wear-resisting hydrophobic coating according to claim 6, which is characterized in that the polytetrafluoroethylene (PTFE) mixing
After the completion of solution allocation, 30-90min is stirred under the low pressure of 0.1-0.5Pa by defoaming machine and carries out de-bubble and stands.
8. the preparation method of wear-resisting hydrophobic coating according to claim 1, which is characterized in that in third step, atomizing lance
The pressure of spraying is 0.2-1MPa, and spray gun movement speed is 100-300mm/s.
9. the preparation method of wear-resisting hydrophobic coating according to claim 1, which is characterized in that in third step, baking condition
For：120-170 DEG C of heat preservation 0.5-3h, then heats to 350~420 DEG C of heat preservation 1-5h, and heating rate is 5-15 DEG C/min.
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| CN113026357A (en) * | 2021-03-23 | 2021-06-25 | 苏州莱昊新材料科技有限公司 | Preparation method of washable and self-repairing super-hydrophobic polyester fabric |
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