CN116496654A - Oleophobic coating, preparation method thereof and application thereof in filtration of oily particles - Google Patents
Oleophobic coating, preparation method thereof and application thereof in filtration of oily particles Download PDFInfo
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- CN116496654A CN116496654A CN202210055241.0A CN202210055241A CN116496654A CN 116496654 A CN116496654 A CN 116496654A CN 202210055241 A CN202210055241 A CN 202210055241A CN 116496654 A CN116496654 A CN 116496654A
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- oleophobic coating
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- 239000011248 coating agent Substances 0.000 title claims abstract description 121
- 238000000576 coating method Methods 0.000 title claims abstract description 121
- 238000001914 filtration Methods 0.000 title claims abstract description 60
- 239000002245 particle Substances 0.000 title abstract description 50
- 238000002360 preparation method Methods 0.000 title abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 79
- 239000000758 substrate Substances 0.000 claims abstract description 16
- 150000001875 compounds Chemical class 0.000 claims abstract description 9
- 239000000835 fiber Substances 0.000 claims description 42
- 238000000034 method Methods 0.000 claims description 31
- 239000000126 substance Substances 0.000 claims description 19
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical class CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 claims description 14
- 229910052731 fluorine Inorganic materials 0.000 claims description 12
- 239000011737 fluorine Substances 0.000 claims description 12
- 238000004140 cleaning Methods 0.000 claims description 9
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 8
- 239000002904 solvent Substances 0.000 claims description 8
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 7
- SNGREZUHAYWORS-UHFFFAOYSA-N perfluorooctanoic acid Chemical compound OC(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F SNGREZUHAYWORS-UHFFFAOYSA-N 0.000 claims description 6
- OBETXYAYXDNJHR-UHFFFAOYSA-N alpha-ethylcaproic acid Natural products CCCCC(CC)C(O)=O OBETXYAYXDNJHR-UHFFFAOYSA-N 0.000 claims description 5
- 238000000151 deposition Methods 0.000 claims description 5
- 125000001153 fluoro group Chemical group F* 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 230000000241 respiratory effect Effects 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 3
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical group [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 claims description 2
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical group [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 claims description 2
- 229910001431 copper ion Chemical group 0.000 claims description 2
- 229910001415 sodium ion Inorganic materials 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 27
- 229910001220 stainless steel Inorganic materials 0.000 description 44
- 239000010935 stainless steel Substances 0.000 description 44
- 239000002033 PVDF binder Substances 0.000 description 38
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- 235000019198 oils Nutrition 0.000 description 33
- 238000012360 testing method Methods 0.000 description 27
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- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- LWHQXUODFPPQTL-UHFFFAOYSA-M sodium;2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-pentadecafluorooctanoate Chemical compound [Na+].[O-]C(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F LWHQXUODFPPQTL-UHFFFAOYSA-M 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 238000001035 drying Methods 0.000 description 9
- 239000010419 fine particle Substances 0.000 description 8
- 239000008367 deionised water Substances 0.000 description 7
- 229910021641 deionized water Inorganic materials 0.000 description 7
- 150000003839 salts Chemical class 0.000 description 7
- 238000001878 scanning electron micrograph Methods 0.000 description 7
- 238000005406 washing Methods 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 239000013618 particulate matter Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000000779 smoke Substances 0.000 description 5
- 239000011734 sodium Substances 0.000 description 5
- 229910052708 sodium Inorganic materials 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
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- 239000007789 gas Substances 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 239000012298 atmosphere Substances 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000003599 detergent Substances 0.000 description 3
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- 239000006233 lamp black Substances 0.000 description 3
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- 238000011056 performance test Methods 0.000 description 3
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- 238000005507 spraying Methods 0.000 description 3
- XRVCXZWINJOORX-UHFFFAOYSA-N 4-amino-6-(ethylamino)-1,3,5-triazin-2-ol Chemical compound CCNC1=NC(N)=NC(O)=N1 XRVCXZWINJOORX-UHFFFAOYSA-N 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 150000007514 bases Chemical class 0.000 description 2
- 235000013361 beverage Nutrition 0.000 description 2
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- 239000003549 soybean oil Substances 0.000 description 2
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- JNURPZYKCOQGOX-UHFFFAOYSA-N C(CCCCCCC)(=O)O.[F] Chemical group C(CCCCCCC)(=O)O.[F] JNURPZYKCOQGOX-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 208000024172 Cardiovascular disease Diseases 0.000 description 1
- 206010014561 Emphysema Diseases 0.000 description 1
- 206010058467 Lung neoplasm malignant Diseases 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 206010074268 Reproductive toxicity Diseases 0.000 description 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- 235000019486 Sunflower oil Nutrition 0.000 description 1
- 206010044302 Tracheitis Diseases 0.000 description 1
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- 238000006243 chemical reaction Methods 0.000 description 1
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- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- OPQARKPSCNTWTJ-UHFFFAOYSA-L copper(ii) acetate Chemical compound [Cu+2].CC([O-])=O.CC([O-])=O OPQARKPSCNTWTJ-UHFFFAOYSA-L 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- 230000005611 electricity Effects 0.000 description 1
- 238000000635 electron micrograph Methods 0.000 description 1
- 238000001523 electrospinning Methods 0.000 description 1
- 238000009503 electrostatic coating Methods 0.000 description 1
- 238000007590 electrostatic spraying Methods 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- QVWTVJHDWLMMTC-UHFFFAOYSA-N fluoro octanoate Chemical group CCCCCCCC(=O)OF QVWTVJHDWLMMTC-UHFFFAOYSA-N 0.000 description 1
- XPBBUZJBQWWFFJ-UHFFFAOYSA-N fluorosilane Chemical compound [SiH3]F XPBBUZJBQWWFFJ-UHFFFAOYSA-N 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000007674 genetic toxicity Effects 0.000 description 1
- 231100000025 genetic toxicology Toxicity 0.000 description 1
- 210000004602 germ cell Anatomy 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 231100000206 health hazard Toxicity 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 210000000987 immune system Anatomy 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 201000005202 lung cancer Diseases 0.000 description 1
- 208000020816 lung neoplasm Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 239000011859 microparticle Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- 239000002121 nanofiber Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 208000005069 pulmonary fibrosis Diseases 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000007696 reproductive toxicity Effects 0.000 description 1
- 231100000372 reproductive toxicity Toxicity 0.000 description 1
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- 238000009991 scouring Methods 0.000 description 1
- 230000020509 sex determination Effects 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- QDRKDTQENPPHOJ-UHFFFAOYSA-N sodium ethoxide Chemical compound [Na+].CC[O-] QDRKDTQENPPHOJ-UHFFFAOYSA-N 0.000 description 1
- 239000008247 solid mixture Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000007655 standard test method Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000002600 sunflower oil Substances 0.000 description 1
- 235000020238 sunflower seed Nutrition 0.000 description 1
- 238000001132 ultrasonic dispersion Methods 0.000 description 1
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Classifications
-
- 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
- C09D7/63—Additives non-macromolecular organic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/184—Carboxylic acids; Anhydrides, halides or salts thereof
- D06M13/207—Substituted carboxylic acids, e.g. by hydroxy or keto groups; Anhydrides, halides or salts thereof
- D06M13/21—Halogenated carboxylic acids; Anhydrides, halides or salts thereof
- D06M13/213—Perfluoroalkyl carboxylic acids; Anhydrides, halides or salts thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/18—Synthetic fibres consisting of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/22—Polymers or copolymers of halogenated mono-olefins
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/10—Repellency against liquids
- D06M2200/11—Oleophobic properties
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Textile Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Materials (AREA)
Abstract
The invention discloses an oleophobic coating, a preparation method thereof and application thereof in filtration of oily particles, wherein the oleophobic coating material contains a compound with a structure shown in a formula (1); the invention utilizes the oleophobic effect of the oleophobic coating material to coat the oleophobic coating material on the surfaces of different substrates to construct the surface oleophobic filter. The oleophobic coating material has strong adhesion with the substrate, and can be firmly and uniformly coated on different substrates. The oleophobic coating material has good thermal stability, stable oleophobic effect and no influence of temperature on the oleophobic effect. [ C 7 F m H 15‑ m COO] n M formula (1).
Description
Technical Field
The invention belongs to the technical field of air purification, and particularly relates to an oleophobic coating material, a preparation method thereof and application thereof in filtration of oily (lampblack) particles.
Background
A large amount of oily particles are mixed in the oil smoke generated in the cooking process. A large number of researches show that the lampblack has complex components and can cause great environmental pollution and health hazard. When the oil temperature in the cooking process rises to 100 ℃, low-boiling-point micromolecular substances, water and the like are vaporized firstly; when the oil temperature is increased from 100 ℃ to 270 ℃, substances with higher boiling points begin to vaporize, and oil fume containing oily particles with diameters of 2.5-10 mu m is generated; the oil temperature is raised to 270 deg.c or higher, and the high boiling macromolecular components are vaporized rapidly and violently to produce great amount of fine oil mist of diameter below 0.4 microns and polycyclic hydrocarbon with high chemical toxicity. If the catering oil smoke formed in each stage is discharged into the atmosphere without treatment, a large amount of pollution fine particles can enter the atmosphere, and the fine particles discharged by the oil smoke become one of pollution sources of urban atmosphere pollution, and are also one of causes of haze formation.
In los angeles of China and U.S., the organic carbon emission of the atmospheric Chinese food and beverage source is higher than that of wood combustion, motor vehicles, cigarettes and dust sources, and the emission of fine particles of the atmospheric food and beverage source is higher than that of tail gas sources of motor vehicles. Improper discharge of catering lampblack not only can seriously pollute the environment, but also can cause serious adverse effects on human health. Research shows that the fume particles have genetic toxicity, reproductive toxicity and carcinogenic mutability, and seriously damage the respiratory system and immune system of human body. The long-term respiration of gases containing smoke particles can cause diseases such as asthma, tracheitis, emphysema, pulmonary fibrosis, lung cancer and the like. In addition, the oil smoke particles can also cause skin pores to be blocked, and cause cardiovascular and cerebrovascular diseases and germ cell canceration. It is important to filter and prevent oily particles, especially oily fine particles.
At present, methods for treating (filtering) oily particles mainly include a mechanical separation method, an activated carbon adsorption method, a wet treatment method, an electrostatic treatment method, and the like. The mechanical separation method mainly uses inertial collision or centrifugal separation, and makes the air flow containing oily particles rotate strongly according to the mechanical path by applying forced force, so that the oily particles are separated from the air flow due to inertial action. The method has the advantages of simple equipment, small airflow pressure drop, low removal rate and frequent maintenance. The active carbon adsorption method mainly makes the air flow containing oily particles pass through the fiber mat containing active carbon, so that the oily particles are separated from the air flow due to the effects of interception, adsorption, inertial collision and the like. The wet treatment method is mainly to pass a gas stream containing oily particles through a purification device such as a water spray scrubber by the action of liquid phase elution, thereby eluting the oily particles from the gas phase to the liquid phase. The method can produce a large amount of polluted wastewater, needs daily maintenance equipment and has high failure rate. The electrostatic treatment method mainly comprises the steps of enabling air flow containing oily particles to pass through an externally-applied high-voltage electric field under the action of electric field force after the oily particles are electrified, moving towards a dust collecting plate and depositing on the dust collecting plate. The method has higher purification efficiency, but ozone is easy to generate at high pressure, and the equipment cost is high. Because of the defects of the conventional oily particulate matter filtering and purifying method and technology, the fabric filtering method is an important research point in recent years due to the characteristics of convenient use and capability of filtering fine particulate matters. The fabric filtering method has the advantages of simple equipment, mild condition, strong operability and higher filtering efficiency, and can achieve the high-efficiency, low-resistance, energy-saving and convenient filtering separation of fine particles. However, the conventional filtering materials used in the fabric filtering method are high molecular materials such as polypropylene (PP) and the like, and have an oleophilic effect; the resistance of the filter screen prepared by the filter materials such as PP increases sharply after oil absorption, and the efficiency also decreases sharply, so that the filter screen is difficult to be widely applied.
Aiming at the problem of oleophilic existing in the traditional fabric filtering method, the method can be solved by adopting a mode of coating an oleophobic coating. When the oily particles are blocked by the fibers of the fabric filter screen, the oleophobic effect of the fiber surface can make the oil droplets not easily adhere to the surface of the fabric filter screen, and the static electricity on the fiber surface can enable the oil droplets to be coagulated into large oil droplets and slide off the fiber surface, so that the fiber filtering efficiency and resistance are not affected. Therefore, the preparation of the filter material with the oleophobic surface has very important significance for realizing the high-efficiency low-resistance filtration of the oily particles. Currently, commonly used oleophobic coating materials are mainly polyelectrolyte fluorinated surfactants, fluorosilanes, fluorocopolymers, hydrogels. The fluorosilane is often used for porous surfaces, can adhere and fill up pores on the surfaces of materials, and is not suitable for a porous filter screen; the fluorine-containing copolymer has complex components and complex preparation process, and is difficult to realize convenient and quick industrial preparation; the hydrogel needs to be oleophobic on the water-containing surface, and the filtration scene of the oily particles is various, so that the hydrogel cannot be applied to all oleophobic scenes. Therefore, there is an urgent need for an oleophobic coating material with simple process, stable oleophobic effect, wide application scenario and good thermal stability, and the oleophobic coating material is applied to an oleophobic filter, so that the filtration of oily fine particles is realized conveniently, efficiently, with low resistance, cleanable and repeatable.
Disclosure of Invention
In order to solve the above technical problems, the present invention provides an oleophobic coating material comprising a compound having a structure represented by formula (1):
[C 7 F m H 15-m COO] n m type (1)
Wherein m is selected from integers from 1 to 15; m is sodium ion or copper ion; n represents the valence of M and is an integer not less than 1, for example n=1 or 2.
According to an embodiment of the invention, m is 15.
According to an embodiment of the invention, the preparation raw materials of the oleophobic coating material comprise 1-15 fluorine substituted octanoic acid and alkaline substances, and are prepared by reacting 1-15 fluorine substituted octanoic acid and alkaline substances.
According to an exemplary embodiment of the present invention, the oleophobic coating material is prepared from a raw material including perfluorooctanoic acid (PFAO) and an alkaline substance, and is formed by reacting PFAO with the alkaline substance.
According to an embodiment of the present invention, the basic substance may be at least one of an inorganic basic compound, an organic basic compound, and the like; illustratively, the alkaline substance is selected from at least one of the following compounds: sodium hydroxide, sodium acetate, sodium ethoxide, copper acetate, and the like.
Illustratively, the compound of formula (1) is sodium perfluorooctanoate, which may be prepared by reacting sodium hydroxide with perfluorooctanoic acid.
According to embodiments of the present invention, the oleophobic coating material can be present in liquid form; for example, the compound of the structure represented by the formula (1) accounts for 0.001wt% to 0.25wt% of the total mass of the oleophobic coating material solution, and is exemplified by 0.001wt%,0.005wt%,0.01wt%,0.05wt%,0.1wt%,0.15wt%,0.2wt%,0.25wt%; preferably 0.005wt%. Further, the solvent of the oleophobic coating material solution can be a volatile solvent, such as ethanol.
The invention also provides a preparation method of the oleophobic coating material, which comprises the following steps:
mixing 1-15 fluorine substituted octanoic acid, alkaline substances and volatile solvents, and reacting to obtain the oleophobic coating material.
According to an embodiment of the present invention, 1 to 15 fluorine-substituted octanoic acids are added in an amount according to the content of the compound having the structure represented by formula (1) in the oleophobic coating material solution.
According to an embodiment of the invention, the temperature of the reaction system is 15-30 ℃, preferably 25 ℃, and the reaction time is 5-40min, preferably 10min.
According to an embodiment of the invention, the mixing is ultrasonic dispersion mixing or stirring mixing, so that the solid matter is completely dissolved.
The invention also provides an oleophobic coating which is an oleophobic layer containing fluorine octanoic acid anion chain and is prepared from the oleophobic coating material.
According to an embodiment of the invention, the number of fluorine in the fluorine-containing octanoic acid anion chain oleophobic layer is 1-15.
According to an embodiment of the invention, the contact angle of the oleophobic coating with oil is not less than 120 °.
The invention also provides an oleophobic product, which contains the oleophobic coating.
According to an embodiment of the invention, the oleophobic article further comprises a substrate, the oleophobic coating being located on a surface of the substrate.
According to an embodiment of the invention, the substrate is a solid substance capable of adhering the oleophobic coating material, illustratively a stainless steel mesh, brass mesh, PP meltblown cloth, PVDF fiber film, or the like.
According to an exemplary aspect of the present invention, the oleophobic article may be an oleophobic fiber. Specifically, the oleophobic fiber comprises a fiber substrate and an oleophobic coating compounded on the surface of the fiber substrate. Further, the oleophobic fibers have a diameter of 100nm to 10 μm, for example 500nm to 5 μm.
According to an exemplary aspect of the present invention, the oleophobic article may be an oleophobic stainless steel mesh. Specifically, the oleophobic stainless steel net comprises a stainless steel net and an oleophobic coating compounded on the surface of the stainless steel net.
The invention also provides a preparation method of the oleophobic product, which comprises the following steps: and depositing the oleophobic coating material on the surface of the substrate to form an oleophobic coating, so as to obtain the oleophobic product.
According to embodiments of the present invention, the deposition may be by pressure spraying, electrostatic spraying, or coating, among others.
According to an embodiment of the present invention, after the deposition is completed, it is also dried and purified. Wherein the drying is performed in an environment free from foreign matter, the drying temperature is 20-30 ℃, and the drying time is 5 minutes or more, and the drying time is 10 minutes. The purification is to remove salt particles of the oleophobic coating material precipitated on the surface after drying, and the purification liquid adopts liquid which does not influence the morphological structure of the oleophobic coating material, and can be specifically deionized water.
The invention also provides a filter material of the filter, which comprises the oleophobic coating material, the oleophobic coating or the oleophobic product.
Illustratively, the filter media is made of oleophobic fibers as described above.
The invention also provides a filter, which contains the filter material.
Illustratively, the filter is a respiratory mask, a range hood, or the like.
The invention also provides application of the oleophobic coating material, the oleophobic coating, the oleophobic product or the filter material in filtering oily substances.
According to an embodiment of the present invention, the oily substance comprises: oil mist, oil droplets and/or oily particulates of soybean oil, blend oil, sunflower oil, sesame oil, olive oil, etc.; for example, the oily particles are oils having a diameter of 2.5-10 μmSexual particulate matter and/or oily particulate matter having a diameter of less than 0.4 μm, e.g. PM 10 、PM 2.5 Or PM 0.3 。
The invention also provides a recycling method of the filter, which comprises the following steps: the filter after absorbing oily substances is cleaned, so that the filter can be reused.
According to an embodiment of the invention, the step of cleaning comprises: the cleaning cloth is used for dipping the detergent to clean the oily particles adsorbed on the surface of the filter, deionized water is used for cleaning, and the filter can realize the repeatable filtration of the oily particles by the filter after drying at room temperature.
In the present invention, the number of repeated use after washing may be not more than 50.
The invention also provides a range hood, which comprises the filter.
The invention also provides a breathing mask interlayer which is prepared from the oleophobic product.
The invention also provides a breathing mask, which comprises the breathing mask interlayer.
Advantageous effects
(1) The invention prepares an oleophobic coating material which is a polyelectrolyte fluorinated surfactant, and constructs a fluorine-containing octanoic acid anion chain oleophobic layer (such as a perfluoro octanoic acid anion chain oleophobic layer) through the characteristic of low surface energy of a polyfluoro compound, so that a remarkable oleophobic effect is realized at an air-oil-solid interface.
(2) The invention utilizes the oleophobic effect of the oleophobic coating material to coat the oleophobic coating material on the surfaces of different substrates to construct the surface oleophobic filter. The oleophobic coating material has strong adhesion with the substrate, and can be firmly and uniformly coated on different substrates. The oleophobic coating material has good thermal stability, stable oleophobic effect and no influence of temperature on the oleophobic effect.
(3) The oleophobic coating material disclosed by the invention is coated on the surface of a filter with a fine particle filtering effect, can realize high-efficiency, low-resistance and cleanable filtering of oily fine particles, has no obvious change in filtering efficiency and airflow resistance after multiple times of filtering of the oily particles, and can still effectively passOil-filtering particulate matter, in particular PM 10 ，PM 2.5 ，PM 0.3 The oleophobic coating material has application prospect in the interlayers of the filter oil particles of the range hood purifying device and the breathing mask.
Drawings
FIG. 1 is a graph showing the contact angle of the stainless steel mesh of example 1 as a function of different mass fractions of sodium perfluorooctanoate in ethanol.
Fig. 2 is an SEM image of the stainless steel mesh surface and PVDF fiber membrane in example 2 and example 3.
FIG. 3 is a graph of the contact angle CA of different types of oils on the surface of an oleophobic stainless steel mesh in example 4.
Fig. 4 is a graph of contact angle versus temperature for a stainless steel mesh surface coated with an oleophobic coating in example 4.
FIG. 5 is a graph of filtration efficiency (a) and airflow resistance (b) for PP melt blown cloth, PVDF fiber membranes, surface Oleophobic PVDF fiber membranes (i.e., oleophobic PVDF) versus salt particles in example 5.
FIG. 6 is a graph (a) of the filtration efficiency versus oil particles before and after filtration of the oil particles for PVDF fibrous membrane coated with an Oleophobic coating (i.e., oleophobic PVDF) and PP meltblown in example 6.
FIG. 7 is a graph showing the variation of the contact angle CA and the average diameter d of the stainless steel mesh with the number of washings in example 7.
Detailed Description
The technical scheme of the invention will be further described in detail below with reference to specific embodiments. It is to be understood that the following examples are illustrative only and are not to be construed as limiting the scope of the invention. All techniques implemented based on the above description of the invention are intended to be included within the scope of the invention.
Unless otherwise indicated, the starting materials and reagents used in the following examples were either commercially available or may be prepared by known methods.
Contact angle test:
contact angle test in examples 1-7 reference GB/T17713-2011 Range hood Standard middle coating non-stick to oilThe definition of the sex determination is carried out by a fully automatic contact angle measuring instrument (DSA 30,) The oleophobic coating surface was tested for static oil contact angle at room temperature (25.+ -. 1) C and relative humidity (50.+ -. 5)% environment. The contact angle data are all tested according to a standard test method, namely, the oil drop size is (6+/-1) mu L, 6 test points on the same test material are taken for measurement, the contact angle of each place is calculated, the maximum value and the minimum value are removed, and the average value of the rest 4 test points is taken as the contact angle value of the test material.
Preparation examples 1 to 8
A method of preparing an oleophobic coating material, the method comprising the steps of:
according to the proportion of 0.001%,0.005%,0.01%,0.05%,0.1%,0.15%,0.2% and 0.25% of total mass of the solution of the oleophobic coating material, respectively weighing solid of perfluorooctanoic acid and sodium hydroxide with corresponding contents, then adding 10mL of ethanol into the solid mixture, stirring to completely dissolve and fully react the solid substances, and obtaining sodium perfluorooctanoate ethanol solutions with different mass fractions, wherein the sodium perfluorooctanoate ethanol solutions are used as the oleophobic coating material. Spraying the sodium perfluoro octoate solution on the surface of the substrate material, and standing for 10min at room temperature (25 ℃) to completely volatilize the ethanol solvent, thereby obtaining the coating material with oleophobic effect.
Example 1
The sodium perfluorooctanoate ethanol solutions with different concentrations prepared in preparation examples 1-8 are coated on the surface of a stainless steel mesh, and the stainless steel mesh is kept stand for 10min at room temperature (25 ℃) to completely volatilize an ethanol solvent, so that a coating with an oleophobic effect is obtained.
The contact angle test is carried out on the stainless steel mesh surface modified with the sodium perfluorooctanoate ethanol solution and the stainless steel mesh surface of the unmodified oleophobic coating material, the test result is shown in figure 1, when the mass fraction of the sodium perfluorooctanoate is 0.005wt% or more, the more stable oleophobic effect can be achieved, and the contact angle of the surface oil can reach 120 degrees or more.
The sodium perfluorooctanoate ethanol solutions with different concentrations prepared in preparation examples 1-8 are coated on the surface of a PVDF fiber film, contact angle tests are carried out, the test results are consistent with the test results on the surface of a stainless steel net, and the stable oleophobic effect can be achieved when the mass fraction of the sodium perfluorooctanoate is 0.005wt% or more.
Therefore, the sodium perfluorooctanoate ethanol solution with the mass fraction of 0.005wt% is selected as the modification solution, and excellent oleophobic effect can be achieved. The oleophobic filter screens referred to hereinafter in this invention are prepared at this concentration, unless otherwise specified.
Example 2 preparation of an oleophobic coating on a stainless Steel mesh surface
Firstly, pretreatment of a stainless steel mesh is performed: the stainless steel mesh was cut to a size of 10cm by 10cm. Washing with detergent, respectively ultrasonic treating with 1mol/L NaOH solution for 1 hr, ultrasonic treating with 95% ethanol for 1 hr, ultrasonic treating with acetone solution for 15min to remove oily substances on the surface of stainless steel mesh, washing with deionized water, and drying.
Then, the construction of the stainless steel mesh surface structure is carried out: immersing the cleaned stainless steel mesh in 2.5mol/LHCl water solution for 3h, taking out when bubbles are obviously generated on the surface of the stainless steel mesh, washing the stainless steel mesh with deionized water, placing the stainless steel mesh in boiling water for 25min, taking out, and drying for later use.
Finally, preparing the oleophobic coating on the surface of the stainless steel mesh: 1mL of a 0.005wt% sodium perfluorooctanoate ethanol solution was sprayed onto the treated stainless steel mesh 10cm above, and allowed to stand at room temperature (25 ℃) for 10min to completely volatilize the ethanol solvent. And (3) flushing the dried stainless steel net with a small amount of deionized water, and removing a small amount of superfluous white sodium perfluoro octoate particles separated out from the surface to obtain the surface oleophobic stainless steel net with the transparent sodium perfluoro octoate coating, wherein the surface morphology structure diagram is shown as a, b and c in figure 2. Wherein a) a stainless steel mesh surface SEM image without oleophobic coating; b) SEM images of the surface of the stainless steel mesh modified with the oleophobic coating; c) Surface SEM image of the stainless steel mesh modified oleophobic coating after filtration of the oily particulates.
Example 3 preparation of surface oleophobic PVDF fiber Membrane
The PVDF fiber film is prepared by an electrostatic spinning method, and the specific process is as follows: and dissolving PVDF powder by using a mixed solution of ethyl acetate and DMF in a mass ratio of 6:4, and preparing a PVDF solution with a mass fraction of 11 wt%. The PVDF solution was loaded into a syringe with a 0.65mm inside diameter metal nozzle, and the solution was spun into nanofibers by electrospinning and collected on a nonwoven substrate. The parameters of electrostatic spinning are that the distance between the spinneret and the collector is 15cm, a 15kV high-voltage power supply is loaded, the volume feeding rate is 0.5mL/h, and the system works at 25 ℃ and humidity of <40% RH and standard atmospheric pressure. And preparing the PVDF fiber film.
And (3) carrying out surface oleophobic treatment on the PVDF fiber membrane. 1mL of a 0.005wt% sodium perfluorooctanoate ethanol solution was sprayed onto PVDF fiber membranes 10cm above, and allowed to stand at room temperature (25 ℃) for 10min to allow the ethanol solvent to evaporate completely. Washing the dried fiber membrane with a small amount of deionized water, and removing a small amount of superfluous white sodium perfluoro octoate particles precipitated on the surface to obtain the PVDF fiber membrane with the transparent sodium perfluoro octoate oleophobic coating, wherein the surface structure of the PVDF fiber membrane is shown as d, e and f in figure 2; wherein d) PVDF fiber film surface SEM image; e) SEM images of PVDF fiber membrane surface modified with oleophobic coating; f) Surface SEM image of PVDF fiber membrane modified oleophobic coating after filtration of oily particulates. The electron microscope images before and after the modified oleophobic coating are compared, so that the coating is completely and uniformly coated. At small dimensions, the modification of the oleophobic coating did not cause the PVDF fiber to block and the PVDF fiber membrane to plug the pores. Comparing the electron microscopy images before and after filtering the oily particles, the surfaces of the stainless steel mesh and PVDF fiber membrane (corresponding to c and f in 2 respectively) coated with the oleophobic coating are attached with oil-free particles, which shows that the oleophobic coating can prevent the oily particles from adhering on different substrates.
Example 4 oleophobic Effect and temperature stability of oleophobic coating
The contact angle test is carried out on the surface of the stainless steel mesh coated with the oleophobic coating by respectively adopting soybean oil, blend oil, sunflower seed oil, sesame oil and olive oil, the test result is shown in figure 3, and figure 3 shows that the stainless steel mesh coated with the oleophobic coating has a contact angle of more than 120 degrees with different types of oil, namely the oleophobic coating can effectively prevent common edible oil on the market from adhering to the surface of the filter.
The stainless steel mesh coated with the oleophobic coating was placed on a heating plate and heated, and the oleophobic effect of the stainless steel mesh coated with the oleophobic coating at high temperature was tested, and the result is shown in fig. 4. In fig. 4, a is a change of contact angle of the stainless steel mesh coated with the oleophobic coating with temperature, and an inset is a photograph of contact angle of the stainless steel mesh coated with the oleophobic coating at 30 ℃ and 100 ℃; b is the change of contact angle of the stainless steel mesh coated with the oleophobic coating over time at 100 ℃, and the inset is a photograph of contact angle of the stainless steel mesh coated with the oleophobic coating for 0s and 30s at 100 ℃. The results of FIG. 4 show that the temperature has little effect on the contact angle in the temperature range of 15-100 ℃ and the surface oleophobic effect is not affected when the temperature is placed at high temperature for a long time. Thus, in this application, temperature has no effect on the oleophobic properties of the stainless steel mesh with the oleophobic coating applied to the surface.
Example 5 filtration Performance test of surface oleophobic filtration Material
To compare the differences in filtration performance of the filter materials before and after application of the oleophobic coating and before and after filtration of the oily particulates, a separate filtration performance test was performed on the different filter materials using a particulate matter tester (TSI 8130).
Comparing the filtration effect of PP melt-blown cloth, PVDF fiber film and PVDF fiber film coated with oleophobic coating on the surface, and testing the filtration efficiency (a in figure 5) and airflow resistance (b in figure 5) of standard salt particles (0.3 mu m NaCl) respectively under the air quantity of 85L/min, wherein the test result is shown in figure 5, and the filtration efficiency and airflow resistance of the PVDF fiber film coated with oleophobic coating on the surface are similar to those of PP melt-blown cloth and PVDF fiber film without oleophobic coating, which shows that the oleophobic coating has no obvious influence on the filtration effect and resistance.
Example 6
Comparing the difference between filtration efficiency and air flow resistance before and after filtration of oily particulates by PP meltblown and oleophobic coated PVDF fibrous membranes, filtration performance tests were performed with standard salt particles (0.3 μm NaCl) and standard oily particulates (0.3 μm DEHS), respectively:
(1) Referring to a common filter material test standard (EN 1822), testing the filtration efficiency and airflow resistance of PP melt-blown cloth and PVDF fiber film coated with oleophobic coating on salt particles and oily particles before and after filtering the particles under the air volume of 32L/min;
(2) Referring to the test standard of the filter material of the breathing mask on the salt particles (GB 2626-2006), the filtration efficiency and the air flow resistance of the PP melt-blown cloth and the PVDF fiber membrane coated with the oleophobic coating on the salt particles are tested under the air quantity of 85L/min;
(3) Referring to the test standard of the filter material of the breathing mask on oily particles (GB 2626-2006), the filtration efficiency and the airflow resistance of the PP melt-blown cloth and the PVDF fiber membrane coated with the oleophobic coating on the oily particles are tested under the air quantity of 95L/min.
The test results are shown in Table 1.
TABLE 1 filtration efficiency and airflow resistance of PP, oleophobic-coated PVDF before and after filtration
As can be seen from table 1, the filter material (PP) without the oleophobic coating was significantly changed in filtration efficiency and airflow resistance after filtering the oily particles, while the material coated with the oleophobic coating was hardly affected after filtering the oily particles.
Referring to the range hood filter material test standard, the filtration efficiency and resistance of PP and PVDF coated with the oleophobic coating before and after filtering oily particles are compared under the air volume of 32L/min, and the results are shown in FIG. 6, and the test conditions are as follows: 0.3 mu m DEHS oily particles, and the air quantity is 32L/min. The results in FIG. 6 show that the PVDF with oleophobic coating and PP without oleophobic coating have comparable initial filtration efficiency and resistance, but after filtration of the oily particulates, the PVDF fiber membrane with oleophobic coating has 207.4% higher filtration efficiency and 63.6% lower resistance than PP without oleophobic coating. After filtering the oily particles, the PP filtration efficiency was drastically reduced, the drop was 75%, the resistance was drastically increased, and the increase was 765%. While the efficiency and resistance of PVDF fiber membranes coated with oleophobic coatings are almost unchanged. Therefore, the oleophobic coating prepared by the invention can increase the stability of the filter.
From the data in table 1 and fig. 6, it can be seen that the PVDF fiber membrane coated with the oleophobic coating prepared according to the present invention can filter oily microparticles with high efficiency and low resistance, confirming the feasibility of the oleophobic coating of the present invention for use in oleophobic filters.
Example 7
Cleaning test of filter materials with oleophobic coating on the surface
The filter material having the oleophobic coating on the surface was subjected to cleanable tests. Spraying oil stain on the surface of a stainless steel net (filter material) coated with an oleophobic coating 10cm above the stainless steel net to simulate the adhesion of the oil stain in production and life, dipping a detergent on the surface of the filter material by using a rough scouring pad, washing the oil stain on the surface of the filter material by using deionized water after the oil stain on the surface of the filter material is washed, and finally drying at room temperature. The above-mentioned cleaning process was performed a plurality of times, and the change of the Contact Angle (CA) and the average diameter (d) of the surface oil of the filter material (filter material) with the number of cleaning times before and after each cleaning test was recorded, and the test results are shown in fig. 7. The result shows that after 50 cleaning test cycles, the oleophobic effect of the surface of the stainless steel mesh is not obviously reduced, and the filter material can be repeatedly used and regenerated.
The embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiment. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An oleophobic coating material characterized in that the material comprises a compound of the structure shown in formula (1):
[C 7 F m H 15-m COO] n m type (1)
Wherein m is selected from integers from 1 to 15; m is sodium ion or copper ion; n represents the valence of M and is 1 or 2.
2. The oleophobic coating material of claim 1, wherein m is 15.
Preferably, the oleophobic coating material is prepared from 1-15 fluorine substituted octanoic acid and alkaline material.
Preferably, the oleophobic coating material is prepared from a raw material comprising perfluorooctanoic acid and an alkaline substance.
Preferably, the compound of the structure shown in the formula (1) accounts for 0.001-0.25 wt% of the total mass of the oleophobic coating material solution.
3. A method of preparing an oleophobic coating material according to claim 1 or 2, characterized in that the method comprises:
mixing 1-15 fluorine substituted octanoic acid, alkaline substances and volatile solvents, and reacting to obtain the oleophobic coating material.
4. An oleophobic coating, characterized in that the oleophobic coating is a fluorine-containing octanoic acid anion chain oleophobic layer, and is prepared from the oleophobic coating material according to claim 1 or 2.
Preferably, the number of fluorine in the fluorine-containing octanoic acid anion chain oleophobic layer is 1-15.
Preferably, the oleophobic coating has a contact angle with oil of not less than 120 °.
5. An oleophobic article comprising the oleophobic coating of claim 4.
6. The method of preparing an oleophobic article according to claim 5, comprising the steps of: depositing the oleophobic coating material of claim 1 or 2 on a substrate surface to form an oleophobic coating, resulting in the oleophobic article.
7. A filter media comprising the oleophobic coating material of claim 1 or 2, the oleophobic coating of claim 4 or the oleophobic article of claim 5.
Preferably, the filter media is made of oleophobic fibers.
8. A filter comprising the filter media of claim 7.
Preferably, the filter is a breathing mask, a range hood or a range hood.
9. Use of the oleophobic coating material of claim 1 or 2, the oleophobic coating of claim 4, the oleophobic article of claim 5 or the filter media of claim 7 for filtering oily substances.
10. A method of recycling a filter as set forth in claim 8, comprising: and cleaning the filter which adsorbs oily substances, so as to realize the recycling of the filter.
Preferably, a range hood is characterized in that it comprises a filter according to claim 8.
Preferably, a respiratory mask sandwich is prepared from the oleophobic article of claim 5.
Preferably, a respiratory mask is characterized in that it comprises said respiratory mask sandwich.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102925882A (en) * | 2012-11-08 | 2013-02-13 | 镇江中孚复合材料有限公司 | Super oleophobic coating preparation method |
| CN105820605A (en) * | 2016-03-18 | 2016-08-03 | 湖北大学 | Preparation method of universal super-amphiphobic nano coating based on flower shape titanium dioxide nano particles |
| US10124298B1 (en) * | 2015-07-07 | 2018-11-13 | The University Of Tulsa | Highly selective, ultralight, electro-spun filter media for separating oil-water mixtures |
| US20200103121A1 (en) * | 2018-04-02 | 2020-04-02 | Atieh Haghdoost | Ovens and articles with oleophobic surface coatings |
| CN111423246A (en) * | 2020-05-27 | 2020-07-17 | 山东科技大学 | Preparation method of ecological porous concrete for oily sewage treatment |
| CN113842676A (en) * | 2021-10-20 | 2021-12-28 | 同济大学 | Super-hydrophilic-super-oleophobic particle for oily sewage treatment and preparation method and application thereof |
| CN113896282A (en) * | 2021-11-10 | 2022-01-07 | 哈尔滨工业大学 | Underwater oil stain removing equipment based on super-oleophobic and super-hydrophilic net film |
-
2022
- 2022-01-18 CN CN202210055241.0A patent/CN116496654A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102925882A (en) * | 2012-11-08 | 2013-02-13 | 镇江中孚复合材料有限公司 | Super oleophobic coating preparation method |
| US10124298B1 (en) * | 2015-07-07 | 2018-11-13 | The University Of Tulsa | Highly selective, ultralight, electro-spun filter media for separating oil-water mixtures |
| CN105820605A (en) * | 2016-03-18 | 2016-08-03 | 湖北大学 | Preparation method of universal super-amphiphobic nano coating based on flower shape titanium dioxide nano particles |
| US20200103121A1 (en) * | 2018-04-02 | 2020-04-02 | Atieh Haghdoost | Ovens and articles with oleophobic surface coatings |
| CN111423246A (en) * | 2020-05-27 | 2020-07-17 | 山东科技大学 | Preparation method of ecological porous concrete for oily sewage treatment |
| CN113842676A (en) * | 2021-10-20 | 2021-12-28 | 同济大学 | Super-hydrophilic-super-oleophobic particle for oily sewage treatment and preparation method and application thereof |
| CN113896282A (en) * | 2021-11-10 | 2022-01-07 | 哈尔滨工业大学 | Underwater oil stain removing equipment based on super-oleophobic and super-hydrophilic net film |
Non-Patent Citations (2)
| Title |
|---|
| LI HAO, ET AL.: "Fabrication of superhydrophobic and oleophobic surface on zinc substrate by a simple method", 《COLLOIDS AND SURFACES A: PHYSICOCHEMICAL AND ENGINEERING ASPECTS》, pages 271 - 278 * |
| 高丰等: "超亲水-超疏油油水分离材料的研究进展", 《材料导报》, vol. 34, no. 7, pages 13022 - 13027 * |
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