CN105986480B - Protective coating, filtrate, matrix and its protective coating preparation method - Google Patents
Protective coating, filtrate, matrix and its protective coating preparation method Download PDFInfo
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- CN105986480B CN105986480B CN201510076536.6A CN201510076536A CN105986480B CN 105986480 B CN105986480 B CN 105986480B CN 201510076536 A CN201510076536 A CN 201510076536A CN 105986480 B CN105986480 B CN 105986480B
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Abstract
The present invention relates to a kind of preparation methods of protective coating comprising following steps: configuration mixed liquor a makes that it includes the polyelectrolyte of 1 ~ 50 g/L, the strong electrolytes of 0.01 ~ 2 mol/L；The mixed liquor a is formed in the surface and base internal micro-structure of matrix, and the matrix is dried；It takes polystyrene nanoparticles dispersion liquid that polytetrafluorethylenano nano particle dispersion, 0 ~ 50 part of mass fraction that 50 ~ 100 parts of mass fraction is 2% ~ 15% are 1% ~ 10% to mix, and is stirred or ultrasonic disperse, to obtain mixed liquor b；The mixed liquor b is formed in substrate surface and base internal micro-structure, and described matrix is dried；Being warming up to 160 ~ 220 DEG C of bakings melts the granules of polystyrene, solidifies polytetrafluoroethylgranule granule, takes out Temperature fall.In addition, the invention further relates to a kind of protective coating, filtrate and matrixes.
Description
Technical field
The present invention relates to the preparation methods of a kind of protective coating, filtrate, matrix and its protective coating.
Background technique
Haze problem has become one of China, especially Beijing-tianjin-hebei Region problem of environmental pollution the most serious.According to system
Meter causes the PM2.5 of haze to have more than 20% and discharges from industrial smoke, such as thermal power plant, cement plant, garbage burning factory etc., because
The flue gas purifying equipment of this Promotion Transformation flue gas emission enterprise is the key task that haze is administered.Currently, industrial flue gas cleaning is set
Standby to divide by technology, there are two main classes: one kind is electrostatic precipitator technology, and one kind is filter bag dedusting technology.After electrostatic precipitation
Industrial smoke, granular material discharged concentration is generally in 50-100mg/m, minimum reachable 15-30 mg/m, and use filter bag dedusting
Technology, granular material discharged concentration are generally less than 50 mg/m, minimum reachable 0-5 mg/m.According to national New emission standard
GB13223-2011, granular material discharged concentration are less than 20mg/m, so must be using electric bag combination or filter bag dedusting technology ability
Stably reach requirement.
The core of filter bag dedusting technology is filtrate.As consumptive material, filtrate has certain service life, is commonly gathered with coal-burning power plant
For diphenyl sulfide high-temperature dust removal filtrate, domestic life-span of filtering material is about 1-3, and import filter bag was up to 3 years or more.Extend filter bag to use
Service life can not only substantially reduce the cost of filter bag dedusting, while can also extend the time of enterprise's stop production to overhaul, and correlation is looked forward to
It is significant that industry carries out environmental transformation.In order to improve the service life of filtrate, many domestic and international renowned companies are such as abundant to rise collection
Group, east filter bag, Bo Ge, Andrew, Bi Dafu etc. all process filtrate using polytetrafluoroethylene (PTFE) dipping technique, thus
Oxidation resistance, the antiacid caustic corrosion ability, filter efficiency, deashing ability for improving filter bag, to prolong its service life.But it is existing
Filtrate cannot be protected completely first is that polytetrafluoroethylene (PTFE) coverage rate is low with the presence of two significant drawbacks of polytetrafluoroethylene (PTFE) dipping technique
Fiber；Second is that polytetrafluoroethylene (PTFE) and filter media fibre adsorption capacity are small, the polytetrafluoroethylene (PTFE) is easy to fall off.Therefore the current technology is to filtrate
The promotion effect in service life is limited.
Summary of the invention
In view of this, it is necessory to provide the protection of a kind of polytetrafluoroethylene (PTFE) coverage rate height and filter media fibre strong adsorption force
Coating, filtrate, matrix and its protective coating preparation method.
A kind of protective coating, the protective coating include a polyelectrolyte layer and a polytetrafluorethylenano nano stratum granulosum, institute
It states polyelectrolyte layer and the polytetrafluorethylenano nano stratum granulosum is stacked.
A kind of filtrate, the filtrate include filtrate matrix and the protective coating for being set to the filtrate matrix, the protective coating
Including a polyelectrolyte layer and a polytetrafluorethylenano nano stratum granulosum, the polyelectrolyte layer and the polytetrafluorethylenano nano
Stratum granulosum is stacked.
A kind of matrix, the matrix include matrix bodies and the protective coating for being set to the matrix bodies, the protective coating
Including a polyelectrolyte layer and a polytetrafluorethylenano nano stratum granulosum, the polyelectrolyte layer and the polytetrafluorethylenano nano
Stratum granulosum is stacked.
A kind of preparation method of protective coating comprising following steps: configuration mixed liquor a makes that it includes 1 ~ 50 g/L's
Polyelectrolyte, the strong electrolyte of 0.01 ~ 2 mol/L；The mixed liquor a is formed in surface and the base internal micro-structure of matrix
In, and the matrix is dried；Take the polytetrafluorethylenano nano particle dispersion, 0 ~ 50 that 50 ~ 100 parts of mass fraction is 2% ~ 15%
The polystyrene nanoparticles dispersion liquid that part mass fraction is 1% ~ 10% mixes, and is stirred or ultrasonic disperse, to obtain
Mixed liquor b；The mixed liquor b is formed in substrate surface and base internal micro-structure, and described matrix is dried；It is warming up to
160 ~ 220 DEG C of bakings melt the granules of polystyrene, solidify polytetrafluoroethylgranule granule, take out Temperature fall.
A kind of preparation method of filtrate protective coating comprising following steps: configuration mixed liquor a makes that it includes 1 ~ 50
The polyelectrolyte of g/L, the strong electrolyte of 0.01 ~ 2 mol/L；The mixed liquor a is formed in a filter material surface and the filtrate
The fiber surface in portion, and the filtrate is dried；Take the polytetrafluorethylenano nano particle that 50 ~ 100 parts of mass fraction is 2% ~ 15%
Dispersion liquid, the polystyrene nanoparticles dispersion liquid that 0 ~ 50 part of mass fraction is 1% ~ 10% mix, and are stirred or ultrasound point
It dissipates, to obtain mixed liquor b；The mixed liquor b is formed in the fiber surface inside filter material surface and the filtrate, and will be described
Filtrate drying；Being warming up to 160 ~ 220 DEG C of bakings melts the granules of polystyrene, solidifies polytetrafluoroethylgranule granule, takes out
Temperature fall.
Compared with prior art, protective coating provided by the invention has the advantage that one, prepared protection apply
The coverage rate of polytetrafluoroethylene (PTFE) is high in layer, and inoxidizability, the acid-alkali-corrosive-resisting ability, intensity of protective coating can be improved；Secondly, institute
Binding force between the protective coating and matrix of preparation is strong；Thirdly, the protective coating surface can it is low, have superhydrophobic characteristic.
Protective coating preparation method provided by the invention has the following advantages that, one, improved using polyelectrolyte matrix with
The suction-operated of polytetrafluorethylenano nano particle, to improve polytetrafluorethylenano nano particle in the coverage rate of matrix surface；Its
Two, polystyrene nanoparticles are added, and make its fusing, form porous nanometer structure, and keeps granules of polystyrene solid well
Due to matrix surface.
Detailed description of the invention
The flow chart of the preparation method of Fig. 1 filter media fibre protective coating provided in an embodiment of the present invention.
The structural schematic diagram of Fig. 2 protective coating provided in an embodiment of the present invention.
Fig. 3 another embodiment of the present invention provides protective coating structural schematic diagram.
Main element symbol description
| Polyelectrolyte layer | 10、20 |
| Polytetrafluorethylenano nano stratum granulosum | 11、22 |
| Polystyrene layer | 21 |
| Matrix | 30 |
| Protective coating | 100、200 |
The present invention that the following detailed description will be further explained with reference to the above drawings.
Specific embodiment
Technical solution of the present invention is further stated in detail combined with specific embodiments below.
Fig. 1 is please referred to, the embodiment of the present invention provides a kind of preparation method of protective coating comprising following steps:
Step 1: configuration mixed liquor a makes that it includes the polyelectrolyte of 1 ~ 50 g/L, the forceful electric power solutions of 0.01 ~ 2 mol/L
Matter；
Step 2: the mixed liquor a being formed in a substrate surface and base internal micro-structure, and the matrix is dried；
Step 3: taking the polytetrafluorethylenano nano particle dispersion, 0 ~ 50 part of matter that 50 ~ 100 parts of mass fraction is 2% ~ 15%
It measures the polystyrene nanoparticles dispersion liquid that score is 1% ~ 10% to mix, and is stirred or ultrasonic disperse, to be mixed
Liquid b；
Step 4: the mixed liquor b being formed in substrate surface and base internal micro-structure, and described matrix is dried；
Step 5: being warming up to 160 ~ 220 DEG C of bakings melts the granules of polystyrene, solidifies polytetrafluoroethylgranule granule,
Take out Temperature fall.
In step (1), the polyelectrolyte is that can ionize in polar solvent, the polymerization for charging macromolecular chain
Object specifically includes that polyacrylic acid, polymethylacrylic acid, polystyrolsulfon acid, polyvinyl sulfonic acid, polyvinyl, polyallylamine
Hydrochloride, polyethyleneimine, polyvinylamine, diallyl dimethyl ammoniumchloride, polyvinyl pyridine, Quadrafos, polysilicon acid
Salt etc..The polyelectrolyte can choose one kind, also can choose a variety of be used in mixed way.The strong electrolyte, i.e., except strong acid, strong
Most of salt electrolyte that can ionize out ion completely under aqueous solution other than alkali, mainly include sodium chloride, potassium chloride, chlorine
Change manganese, ammonium sulfate, sodium sulphate, potassium sulfate etc..The strong electrolyte can choose one kind, also can choose a variety of be used in mixed way.
In step (2), described matrix can be immersed in the mixed liquor a and deposit a period of time, or by the mixing
Liquid sprays or is applied to the surface of described matrix, so that described matrix surface be made to be formed with the mixed liquor b.Preferably, by institute
It states matrix to be immersed in the mixed liquor 5-20 minutes, so that polyelectrolyte and strong electrolyte in the mixed liquor be made to be adsorbed in
In the internal microstructure of described matrix.
The temperature and time of the drying is unlimited.Preferably, the drying temperature is 60 DEG C~80 DEG C, the drying time
It is 20 minutes~40 minutes.The purpose of the drying is to make solvent volatilize.
Described matrix can be various fibers and other porous materials, comprising: filter cloth, filter membrane, filter bag or filtering sponge etc..
More specifically, the filter cloth includes average pore size less than filter clothes such as 200 microns of cotton, fiber crops, polypropylene fibre, terylene, nylon；The filter bag
Including polyphenylene sulfide, terylene, P84, glass, fluorine beauty this, the filter bags of the materials such as aramid fiber, polypropylene, polyester；The filter membrane includes Buddhist nun
Dragon, polytetrafluoroethylene (PTFE), composite fibre ester, Kynoar, miillpore filter of glass fiber material etc.；The filtering sponge includes
Fiber sponge, polyvinyl alcohol, polyurethane foam sponge etc..
In step (3), the polytetrafluorethylenano nano particle dispersion can be by by the polytetrafluorethylenano nano
Particle, which is scattered in a solvent, to be obtained, and can also be obtained by polymerizations such as suspension polymerisation, emulsion polymerizations.The polytetrafluoroethylene (PTFE) is received
The partial size of rice grain can be 50 ~ 1000 nm, can with spherical particles, ellipsoidal particle, irregularly shaped particles, powder,
The phases such as lotion, concentration dispersion liquid exist.
The polystyrene nanoparticles dispersion liquid can be by dispersing a solvent for the polystyrene nanoparticles
Middle acquisition can also be obtained by polymerizations such as suspension polymerisation, emulsion polymerizations.The partial size of the polystyrene nanoparticles can be with
For 50 ~ 1000 nm.
It is described be stirred or the time of ultrasonic disperse and form it is unlimited, as long as guaranteeing the polytetrafluorethylenano nano particle
And the polystyrene nanoparticles may be implemented it is evenly dispersed.Preferably, 20~30 points of the time of the ultrasonic disperse
Clock.
In step (4), the filtrate is immersed in the mixed liquor b and deposits a period of time, or by the mixed liquor
The surface of described matrix is sprayed or is applied to, so that described matrix surface be made to be formed with the mixed liquor b.It preferably, will be described
Mixed liquor is sprayed to described matrix surface, makes matrix complete wetting, to make the polytetrafluorethylenano nano in the mixed liquor b
Grain and polystyrene nanoparticles are adsorbed in the internal microstructure of described matrix.
The temperature and time of the drying is unlimited.Preferably, the drying temperature is 60 DEG C~80 DEG C, the drying time
It is 20 minutes~40 minutes.The purpose of the drying is to make solvent volatilize.
In step (5), the purpose of the baking and is played institute to melt the polystyrene nanoparticles
The effect that polytetrafluorethylenano nano particle is bonded in the substrate surface is stated, while being played polytetrafluorethylenano nano is particles cured
Effect.The time of the baking is unlimited, as long as the polystyrene nanoparticles can be made to melt, makes polytetrafluorethylenano nano
Grain solidification.Preferably, the time of the baking is 10 minutes or more.In baking process, the polytetrafluorethylenano nano
The surface of particle has microfusion, but still can keep prototype.
Certainly, the matrix in this method can also remove.
Protective coating preparation method provided by the invention has the following advantages that base can be improved using polyelectrolyte in one
The suction-operated of body and polytetrafluorethylenano nano particle, to improve polytetrafluorethylenano nano particle in the covering of matrix surface
Rate；Second, addition polystyrene nanoparticles, and make its fusing, porous nanometer structure is formed, granules of polystyrene can be made good
It is fixed on matrix surface well.
The invention further relates to a kind of protective coating obtained by above-mentioned preparation method, when being free of polystyrene in mixed liquor b
When nanoparticulate dispersion, protective coating 100 is obtained.Referring to figure 2., the protective coating 100 include a polyelectrolyte layer 10,
And a polytetrafluorethylenano nano stratum granulosum 11, the polyelectrolyte layer 10 and the stacking of polytetrafluorethylenano nano stratum granulosum 11 are set
It sets.The arrangement compactness of the polytetrafluorethylenano nano stratum granulosum 11 is higher, and anti-oxidant, the acidproof alkali ability of the protective coating is more
By force.
The invention further relates to a kind of another protective coatings obtained by above-mentioned preparation method, poly- when containing in mixed liquor b
When styrene nanoparticulate dispersion, protective coating 200 is obtained.The protective coating 200 is a structure with nanotopography.
The structure of the nanotopography is related with the particle size of polytetrafluoroethylene (PTFE) and polystyrene nanoparticles.Referring to Fig. 3, described
Protective coating 200 includes a polyelectrolyte layer 20, a polystyrene layer 21 and a polytetrafluorethylenano nano stratum granulosum 22, described poly-
Electrolyte layer 20 is stacked with the polystyrene layer 21.The thickness of the polyelectrolyte layer 20 is less than 100 nm.It is described poly-
Styrene layer 21 is stacked with the polytetrafluoroethylgranule granule layer 22, and the polytetrafluoroethylene (PTFE) in the polytetrafluoroethylene ethylene layer 22
Nano particle portion is embedded in the polystyrene layer 21.The thickness of the polystyrene layer 21 is less than 500 nm.It is described poly-
Tetrafluoroethene stratum granulosum 22 with a thickness of 50 ~ 1000 nm.
The surface in a matrix 30 or the surface of intrinsic silicon micro-structure can be set in the protective coating 100,200, from
And it is improved the oxidation resistance of described matrix, acid-alkali-corrosive-resisting ability, intensity.When protective coating 100,200 is set to
When the surface of described matrix 30, the polytetrafluorethylenano nano particle 23 passes through the polyelectrolyte layer 21 or the polystyrene
Layer 22 and the polyelectrolyte layer 21 are bonded in the surface of described matrix 30, the polytetrafluorethylenano nano stratum granulosum 22 with it is described
The binding force of matrix 30 is stronger.
Described matrix can be various fibers and other porous materials, comprising: filter cloth, filter membrane, filter bag, filtering sponge etc..
More specifically, the filter cloth includes the filter clothes such as cotton, fiber crops, polypropylene fibre, terylene, nylon；The filter bag include polyphenylene sulfide, terylene,
P84, glass, fluorine beauty this, the filter bags of the materials such as aramid fiber, polypropylene, polyester；The filter membrane includes nylon, polytetrafluoroethylene (PTFE), mixing
Cellulose ester, Kynoar, miillpore filter of glass fiber material etc.；The filtering sponge includes fiber sponge, polyvinyl alcohol,
Polyurethane foam sponge etc..
When described matrix is filtrate matrix, the protective coating 100,200 is set to surface and the filtrate of filtrate matrix
The surface of matrix fiber, prepared filtrate protective coating coverage rate is high, and filtrate inoxidizability, acid-alkali-corrosive-resisting energy can be improved
Power, intensity；Secondly, prepared filter media fibre protective coating and interfibrous binding force it is strong, resistance to soot dust granule washes away；Thirdly,
Filter media fibre protective coating surface can be low, has superhydrophobic characteristic, and ash-removal effect is good.
Protective coating provided by the invention has the advantage that one, prepared protective coating coverage rate are high, can be improved
Matrix inoxidizability, acid-alkali-corrosive-resisting ability, intensity；Secondly, the binding force between prepared matrix protective coating and matrix it is strong；
Thirdly, described matrix protective coating surface can it is low, have superhydrophobic characteristic.
Embodiment 1:
Mixed liquor a is configured, is made it includes the sodium chloride of the polyelectrolyte of 10 g/L and 0.1 mol/L, which is
Polyallylamine hydrochlorides and the polyvinylamine mixed liquor that 3:1 is formed by volume；Polyphenylene sulfide filter cloth is totally submerged and is mixed in this
It closes in liquid a, deposits 15 minutes, then take out polyphenylene sulfide filter cloth from mixed liquor a, hot-air seasoning, temperature 70 C, until thorough
Bottom drying；Take the polyphenyl that polytetrafluoroethyldispersion dispersion, 20 parts of mass fractions that 80 parts of (volume fraction) mass fractions are 4% are 2%
Ethylene dispersion liquid, is configured to mixed liquor b, and the polytetrafluorethylenano nano grain diameter is 200nm, the pipe/polyhenylethylene nano
Grain partial size is 50nm；Polyphenylene sulfide filter cloth after drying is immersed in mixed liquor b, is thoroughly dried after standing 15 minutes with hot wind
It is dry, temperature 70 C；Polyphenylene sulfide filter cloth after drying is put into oven, is warming up to 180 degrees Celsius, is toasted 15 minutes, is taken out certainly
So cooling.It is observed through scanning electron microscope, the fiber surface in the polyphenylene sulfide filter cloth gathers polytetrafluorethylenano nano particle,
Coverage rate is more than 90%, the coverage rate obtained much higher than traditional polytetrafluoroethylene (PTFE) dipping technique.Frictional experiment is shown, contains polyphenyl
The filtrate protective coating of pvdf layer, the coating loss rate under same normal pressure and reciprocal time, which is much smaller than, does not contain polyphenyl
The filtrate protective coating of pvdf layer.Super-hydrophobic spy is presented in polyphenylene sulfide filter cloth surface with the filtrate protective coating
Property, deashing ability significantly improves.
Embodiment 2
Mixed liquor a is configured, is made it includes the sodium chloride of the polyelectrolyte of 20g/L and 0.2 mol/L, which is poly-
Sodium styrene sulfonate and the diallyl dimethyl ammoniumchloride mixed liquor that 1:2 is formed by volume；Terylene filter cloth is soaked completely
It not in mixed liquor a, deposits 15 minutes, terylene filter cloth is taken out from mixed liquor a, hot-air seasoning, temperature 70 C, until thorough
Bottom drying；Take the polyphenyl that polytetrafluoroethyldispersion dispersion, 30 parts of mass fractions that 70 parts of (volume fraction) mass fractions are 5% are 1%
Ethylene dispersion liquid, is configured to mixed liquor b, and the polytetrafluorethylenano nano grain diameter is 200nm, the pipe/polyhenylethylene nano
Grain partial size is 200nm；Terylene filter cloth after drying is immersed in mixed liquor b, is thoroughly dried after standing 15 minutes with hot wind, temperature
70 DEG C of degree；Terylene filter cloth after drying is put into oven, is warming up to 190 degrees Celsius, is toasted 15 minutes, Temperature fall is taken out.Through
Scanning electron microscope is observed, and it is more that the fiber surface in the terylene filter cloth forms one layer of uniform polytetrafluorethylenano nano particle
Pore structure, aperture is suitable with polystyrene nanoparticles partial size, and whole coverage rate is much higher than traditional polytetrafluoroethylene (PTFE) dipping technique,
And superhydrophobic characteristic is presented in the terylene filter cloth surface with the filtrate protective coating, deashing ability significantly improves.
Embodiment 3
Mixed liquor a is configured, makes the potassium chloride it includes the polyelectrolyte of 20 g/L and 0.3mol/L, which is poly-
Vinylamine；Polyphenylene sulfide filter cloth is totally submerged in mixed liquor a, is deposited 15 minutes, by polyphenylene sulfide filter cloth from mixed liquor a
Middle taking-up, hot-air seasoning, temperature 70 C, until thoroughly drying；Taking 100 parts of (volume fraction) mass fractions is 3% polytetrafluoroethyl-ne
Alkene dispersion liquid, is configured to mixed liquor b, and the polytetrafluorethylenano nano grain diameter is 200nm；Mixed liquor b spray gun is uniform
Polyphenylene sulfide filter cloth surface after being sprayed to drying, until the polyphenylene sulfide filter cloth soaks completely, it is thorough with hot wind after standing 15 minutes
Bottom drying, temperature 70 C；Polyphenylene sulfide filter cloth after drying is put into oven, is warming up to 180 degrees Celsius, toasts 15 minutes, takes
Temperature fall out.It is observed through scanning electron microscope, the fiber surface in the polyphenylene sulfide filter cloth gathers polytetrafluorethylenano nano
Particle, coverage rate are more than 95%, the coverage rate obtained much higher than traditional polytetrafluoroethylene (PTFE) dipping technique.
Embodiment 4
Mixed liquor a is configured, is made it includes the ammonium sulfate of the polyelectrolyte of 15 g/L and 0.5 mol/L, which is
Polymethylacrylic acid；Fiber sponge is totally submerged in mixed liquor a, is deposited 15 minutes, by fiber sponge from mixed liquor a
It takes out, hot-air seasoning, temperature 70 C, until thoroughly drying；Taking 70 parts of (volume fraction) mass fractions is 5% polytetrafluoroethylene (PTFE)
The polystyrene dispersion liquid that dispersion liquid, 30 parts of mass fractions are 1%, is configured to mixed liquor b, the polytetrafluorethylenano nano particle
Partial size is 200 nm, and the polystyrene nanoparticles partial size is 200 nm；Fiber sponge after drying is immersed in mixed liquor b
In, it is thoroughly dried after standing 15 minutes with hot wind, temperature 70 C；Fiber sponge after drying is put into oven, 200 is warming up to and takes the photograph
Family name's degree toasts 15 minutes, takes out Temperature fall.It is observed through scanning electron microscope, the fiber surface in the fiber sponge is formed
One layer of particle porous structure of uniform polytetrafluorethylenano nano, aperture is suitable with polystyrene nanoparticles partial size, integrally covers
Lid rate is much higher than traditional polytetrafluoroethylene (PTFE) dipping technique, and the presentation of the fiber sponge surface with the filtrate protective coating is super thin
Water characteristic, surface can be lower.
In addition, those skilled in the art can also do other variations in spirit of that invention, these are spiritual according to the present invention
The variation done should be all included in scope of the present invention.
Claims (9)
1. a kind of protective coating, which is made of a polyelectrolyte layer and a polytetrafluorethylenano nano stratum granulosum, institute
It states polyelectrolyte layer and the polytetrafluorethylenano nano stratum granulosum is stacked, the polyelectrolyte layer comprises the following steps:
Mixed liquor a is configured, the polyelectrolyte it includes 1~50g/L, the strong electrolyte of 0.01~2mol/L are made；By the mixed liquor a shape
It is dried in matrix surface and intrinsic silicon micro-structure, and by the matrix.
2. protective coating as described in claim 1, which is characterized in that the thickness of the polyelectrolyte layer is less than 100nm, described
Polytetrafluorethylenano nano stratum granulosum with a thickness of 50~1000nm.
3. a kind of filtrate, which includes filtrate matrix and the protective coating for being set to the filtrate matrix, the protective coating by
One polyelectrolyte layer and polytetrafluorethylenano nano stratum granulosum composition, the polyelectrolyte layer and the polytetrafluorethylenano nano
Stratum granulosum is stacked, and the polyelectrolyte layer comprises the following steps: configuration mixed liquor a makes gathering it includes 1~50g/L
Electrolyte, the strong electrolyte of 0.01~2mol/L；The mixed liquor a is formed in filtrate matrix surface and the filtrate intrinsic silicon
Fiber surface, and by the filtrate matrix dry.
4. a kind of matrix, which includes matrix bodies and the protective coating for being set to the matrix bodies, the protective coating by
One polyelectrolyte layer and polytetrafluorethylenano nano stratum granulosum composition, the polyelectrolyte layer and the polytetrafluorethylenano nano
Stratum granulosum is stacked, and the polyelectrolyte layer comprises the following steps: configuration mixed liquor a makes gathering it includes 1~50g/L
Electrolyte, the strong electrolyte of 0.01~2mol/L；The mixed liquor a is formed in inside matrix bodies surface and the matrix bodies
In micro-structure, and the matrix bodies are dried.
5. a kind of preparation method of protective coating comprising following steps:
Mixed liquor a is configured, the polyelectrolyte it includes 1~50g/L, the strong electrolyte of 0.01~2mol/L are made；
The mixed liquor a is formed in the surface and intrinsic silicon micro-structure of matrix, and the matrix is dried；
Take the polytetrafluorethylenano nano particle dispersion that 100 parts of mass fraction is 2%~15%；
The polytetrafluorethylenano nano particle dispersion is formed in matrix surface and intrinsic silicon micro-structure, and by the base
Body drying；
Being warming up to 160~220 DEG C of bakings solidifies polytetrafluoroethylgranule granule, takes out Temperature fall.
6. the preparation method of protective coating as claimed in claim 5, which is characterized in that the polytetrafluorethylenano nano particle point
The partial size of polytetrafluorethylenano nano particle in dispersion liquid is 50~1000 nanometers.
7. the preparation method of protective coating as claimed in claim 5, which is characterized in that described matrix is fiber or porous material
Material.
8. a kind of preparation method of filtrate protective coating comprising following steps:
Mixed liquor a is configured, the polyelectrolyte it includes 1~50g/L, the strong electrolyte of 0.01~2mol/L are made；
The mixed liquor a is formed in the fiber surface inside a filter material surface and the filtrate, and the filtrate is dried；
Take the polytetrafluorethylenano nano particle dispersion that 100 parts of mass fraction is 2%~15%；
The polytetrafluorethylenano nano particle dispersion is formed in the fiber surface inside filter material surface and the filtrate, and by institute
State filtrate drying；
Being warming up to 160~220 DEG C of bakings solidifies polytetrafluoroethylgranule granule, takes out Temperature fall.
9. the preparation method of filtrate protective coating as claimed in claim 8, which is characterized in that the filtrate be filter cloth, filter membrane,
Filter bag or sponge.
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| CN108580227B (en) * | 2018-04-20 | 2020-06-09 | 清华大学 | Rapid preparation method of super-hydrophobic paint surface |
| CN109260826B (en) * | 2018-09-21 | 2020-01-21 | 清华大学 | Polytetrafluoroethylene surface modification filter material and preparation method thereof |
| CN111359310B (en) * | 2020-02-21 | 2021-09-28 | 东营远洁环保科技有限公司 | Modified filter material for treating petroleum sewage |
| WO2021172214A1 (en) * | 2020-02-28 | 2021-09-02 | Ａｇｃ株式会社 | Coated base material and method for producing same |
| CN113270594B (en) * | 2021-05-19 | 2022-11-18 | 郑州佛光发电设备股份有限公司 | Preparation method of waterproof breathable film, waterproof breathable film and application |
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