CN113321995A - Preparation method of super-hydrophobic and corrosion-resistant polyurea composite coating - Google Patents
Preparation method of super-hydrophobic and corrosion-resistant polyurea composite coating Download PDFInfo
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- CN113321995A CN113321995A CN202110677723.5A CN202110677723A CN113321995A CN 113321995 A CN113321995 A CN 113321995A CN 202110677723 A CN202110677723 A CN 202110677723A CN 113321995 A CN113321995 A CN 113321995A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/02—Polyureas
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- 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
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/002—Pretreatement
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- 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
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
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- 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
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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Abstract
The invention discloses a preparation method of a super-hydrophobic and corrosion-resistant polyurea composite coating, which comprises the steps of firstly respectively preparing fluorinated graphene, a polyurea component A and a polyurea component B, then mixing the fluorinated graphene into the polyurea component B to be uniformly dispersed to prepare a mixture, and then adding the polyurea component A and the mixture into a connected spraying device to be sprayed on the surface of a metal substrate to be solidified to obtain the composite coating; the fluorinated graphene inherits the physical barrier property of the graphene lamellar structure, and has high temperature, insulation and chemical stability, so that the composite coating has a wider application range. The wetting performance of the polyurea composite coating is improved by introducing the fluorinated graphene, and the fluorinated graphene and the polyurea coating system are combined with each other, so that the composite coating is overlapped and distributed to generate a labyrinth effect, an excellent physical shielding effect is achieved, a diffusion path of a corrosive medium can be effectively blocked and prolonged, and the corrosion resistance of the coating is improved.
Description
Technical Field
The invention relates to a preparation method of a polyurea composite coating, in particular to a preparation method of a super-hydrophobic and corrosion-resistant polyurea composite coating.
Background
In recent years, the problem of corrosion of materials has been increasing, and the corrosion has become an economic problem which is emphasized by various countries. How to effectively protect the metal is a continuous pursuit of scientific research workers, and the preparation process for coating the anti-corrosion coating on the metal surface is simple, low in cost, free from the limitation of regional conditions and capable of effectively delaying the corrosion of the metal, so that the metal is the simplest, rapid and effective anti-corrosion means. Polyurea anti-corrosion coatings are one of the most commonly used coatings.
The polyurea is formed by spraying raw materials such as semi-prepolymer, amine-terminated polyether, amine chain extender and the like on site. The paint has extremely strong hydrophobicity, is insensitive to the environmental humidity, can be sprayed on water (or ice) to form a film, can be normally constructed under extremely severe environmental conditions, and has outstanding performance. In addition, the polyurea coating has more flexibility, sufficient rigidity, rich colors, compactness, continuity and no seam, completely isolates the permeation of moisture and oxygen in the air, and has better anti-corrosion and protective properties.
With the wider application range and more rigorous use conditions of metal materials such as steel and the like, a single and traditional anticorrosive coating is not enough to meet the current requirements of people on corrosion prevention. Graphene, as a non-toxic, harmless, green and environment-friendly material, has outstanding chemical inertness, oxidation resistance and barrier property, and is receiving wide attention of researchers. However, graphene has an ultra-high specific surface area and van der waals force, so that the graphene is poor in stability and easy to agglomerate in the coating, the shielding effect on a corrosion medium is reduced, and the agglomerated graphene has extremely high conductivity and can accelerate the corrosion process of metal, so that the graphene is uniformly dispersed in the coating.
Based on the above problems, how to provide a composite coating capable of uniformly dispersing graphene in the coating is a research direction of the industry, and the composite coating has both super-hydrophobic and corrosion-resistant properties, so that the service life of a coated part is effectively prolonged.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a preparation method of a super-hydrophobic and corrosion-resistant polyurea composite coating, which can uniformly disperse fluorinated graphene in the polyurea composite coating, so that the prepared composite coating not only has better hydrophobic property, but also has better corrosion resistance, and the service life of a coated part is effectively prolonged.
In order to achieve the purpose, the invention adopts the technical scheme that:
compared with the prior art, the super-hydrophobic and corrosion-resistant composite coating is prepared by adding the fluorinated graphene into the polyurea composite coating, and compared with a traditional graphene coating system, the fluorinated graphene inherits the physical barrier property of a graphene lamellar structure and has high temperature, insulation and chemical stability, so that the composite coating has a wider application range. The wettability (namely the hydrophobic property) of the polyurea composite coating is improved by introducing the fluorinated graphene, and the fluorinated graphene and the polyurea coating system are combined with each other, so that the composite coating is overlapped and distributed to generate a labyrinth effect, an excellent physical shielding effect is achieved, a diffusion path of a corrosive medium can be effectively blocked and prolonged, and the corrosion resistance of the coating is improved. In addition, a large number of fluorine atoms exist in the fluorinated graphene molecular structure, so that the molecules cannot be agglomerated due to electrostatic repulsion, and the corrosion resistance of the coating is further improved. Therefore, the composite coating prepared by the invention has the excellent characteristics of excellent comprehensive mechanical property, higher corrosion resistance, good hydrophobicity, high curing speed, high construction efficiency, insensitivity to environment and the like, and the preparation process is simple, the operation is convenient, the industrialization is easy to realize, and the application prospect is good.
Drawings
FIG. 1 is an optical image of a composite coating prepared according to the present invention sprayed onto a metal substrate;
FIG. 2 is a graph of the contact angle of a composite coating prepared in accordance with the present invention when subjected to a wetting performance test;
FIG. 3 is a graph of the impedance of a composite coating prepared according to the present invention as measured by electrochemical testing.
Detailed Description
The present invention will be further explained below.
Example 1: the preparation method comprises the following specific steps:
step 1: pretreating a metal base material, namely polishing the metal base material to be smooth in surface by adopting 800-mesh abrasive paper, then putting the polished metal base material into a mixed solution of ethanol and acetone, carrying out ultrasonic cleaning on the metal base material for 2 hours by using ultrasonic equipment under the power of 60w, and drying the metal base material in an oven at the temperature of 70 ℃ for 1 hour for later use after the cleaning is finished;
step 2: preparing fluorinated graphene: adding 5 parts by mass of 1-butyl-3-methylimidazolium tetrafluoroborate and 1 part by mass of graphite fluoride into 30 parts by mass of deionized water, performing ultrasonic treatment at 50w power for 30min to uniformly disperse the graphite fluoride to obtain a dispersion, transferring the dispersion into a reaction kettle, heating the dispersion to 180 ℃ and reacting for 24h to obtain a black mixed solution, injecting the black mixed solution into a centrifuge to centrifuge at 3000rpm for 30min, collecting a supernatant of 1/2, adding 15 parts by mass of deionized water into the collected supernatant, performing ultrasonic treatment at the same power and time for the previous time to uniformly disperse the black mixed solution, injecting the black mixed solution into the centrifuge again for centrifugation at the same speed and time for the previous time, collecting the supernatant after the previous standard is completed, and repeating the steps for 5 times; freeze-drying the finally obtained fluorinated graphene dispersion liquid for 24 hours to obtain fluorinated graphene nano powder;
and step 3: preparation of polyurea A component: dehydrating 30 parts by mass of polyethylene glycol adipate glycol at the temperature of 120 ℃ for 2 hours, then adding 50 parts by mass of hexamethylene diisocyanate, putting the mixture into an atmosphere furnace with nitrogen as protective gas, heating to 105 ℃ at the heating rate of 5 ℃, preserving heat for 2 hours, cooling along with the furnace, and taking out to obtain a polyurea component A;
and 4, step 4: preparation of polyurea B component: adding 20 parts by mass of amino-terminated polyether D-2000 and 50 parts by mass of dialkyl toluene diphenylamine into a reaction kettle, stirring at the speed of 50r/min for 10min to uniformly mix the amino-terminated polyether D-2000 and the dialkyl toluene diphenylamine, heating the reaction kettle to 100 ℃ for reaction for 2h, after the reaction is finished, filling nitrogen, opening cooling water to cool to 50 ℃, and taking out the mixture to obtain a polyurea component B;
and 5: preparing a polyurea composite coating: mixing 1 part by mass of fluorinated graphene nano powder into 25 parts by mass of component B, uniformly dispersing to obtain a mixture, adding 50 parts by mass of component A and the mixture into connected spraying equipment, and heating to 60 ℃ for spraying; when the polyurea composite coating is sprayed, gauge pressures of pressure gauges of the component A and the mixture are controlled to be 1200-1500 Psi, pressure difference between the component A and the mixture is controlled to be less than 200Psi, the component A and the mixture are respectively sprayed to the surface of the metal base material in the step 1, and the composite coating in the embodiment 1 is obtained after solidification.
Example 2: the preparation method comprises the following specific steps:
step 1: pretreating a metal base material, namely polishing the metal base material by using 1000-mesh abrasive paper until the surface is smooth, then putting the polished metal base material into a mixed solution of ethanol and acetone, ultrasonically cleaning the metal base material for 1h by using ultrasonic equipment under the power of 80w, and drying the metal base material in a 60 ℃ oven for 2h for later use after cleaning;
step 2: preparing fluorinated graphene: adding 30 parts by mass of brominated 1-hexadecyl-3-methylimidazole and 5 parts by mass of graphite fluoride into 50 parts by mass of deionized water, performing ultrasonic treatment at 60w power for 30min to uniformly disperse the materials to obtain a dispersion liquid, transferring the dispersion liquid into a reaction kettle, heating the reaction kettle to 200 ℃ and reacting for 24h to obtain a black mixed liquid, injecting the black mixed liquid into a centrifuge to centrifuge at 2000rpm for 40min, collecting a supernatant of an upper layer 1/2 after the centrifugation is finished, adding 30 parts by mass of deionized water into the collected supernatant, performing ultrasonic treatment at the same power and time for the previous time to uniformly disperse the black mixed liquid, injecting the black mixed liquid into the centrifuge again for centrifugation at the same speed and centrifugation time for the previous time, collecting the supernatant after the previous standard is finished, and repeating the previous standard for 8 times; freeze-drying the finally obtained fluorinated graphene dispersion liquid for 24 hours to obtain fluorinated graphene nano powder;
and step 3: preparation of polyurea A component: 50 parts by mass of polyethylene glycol mono propylene glycol adipate diol is dehydrated for 2 hours at the temperature of 120 ℃, then 50 parts by mass of tetramethyl benzyl dimethyl diisocyanate is added, the mixture is placed in an atmosphere furnace with nitrogen as protective gas, the temperature is increased to 110 ℃ at the temperature rising rate of 5 ℃, the temperature is kept for 3 hours, and the mixture is taken out after furnace cooling to prepare a polyurea component A;
and 4, step 4: preparation of polyurea B component: adding 20 parts by mass of amino-terminated polyether T-5000 and 60 parts by mass of diethyl toluenediamine into a reaction kettle, stirring at the speed of 80r/min for 10min to uniformly mix the amino-terminated polyether T-5000 and the diethyl toluenediamine, heating the reaction kettle to 105 ℃ for reaction for 2h, after the reaction is finished, filling nitrogen, opening cooling water to cool to 50 ℃, and taking out the mixture after cooling to obtain a polyurea component B;
and 5: preparing a polyurea composite coating: mixing 5 parts by mass of fluorinated graphene nano powder into 30 parts by mass of component B, uniformly dispersing to obtain a mixture, adding 65 parts by mass of component A and the mixture into connected spraying equipment, and heating to 70 ℃ for spraying; when the polyurea composite coating is sprayed, gauge pressures of pressure gauges of the component A and the mixture are controlled to be 1200-1500 Psi, pressure difference between the component A and the mixture is controlled to be less than 200Psi, the component A and the mixture are respectively sprayed to the surface of the metal base material in the step 1, and the composite coating in the embodiment 2 is obtained after solidification.
Example 3: the preparation method comprises the following specific steps:
step 1: pretreating a metal base material, namely polishing the metal base material by using 1200-mesh abrasive paper until the surface is smooth, then putting the polished metal base material into a mixed solution of ethanol and acetone, ultrasonically cleaning the metal base material for 2 hours by using ultrasonic equipment under the power of 60w, and drying the metal base material for 2 hours for later use in a 70 ℃ oven after cleaning;
step 2: preparing fluorinated graphene: adding 5 parts by mass of 1-butyl-3-methylimidazolium tetrafluoroborate, 10 parts by mass of 1-dodecyl-3-methylimidazolium tetrafluoroborate and 8 parts by mass of graphite fluoride into 50 parts by mass of deionized water, performing ultrasonic treatment at 100w power for 30min by using ultrasonic equipment to uniformly disperse the graphite fluoride to obtain a dispersion liquid, transferring the dispersion liquid into a reaction kettle, heating the dispersion liquid to 220 ℃ and reacting the mixture liquid for 20h to obtain a black mixed liquid, injecting the black mixed liquid into a centrifuge, centrifuging the mixture liquid at a rotating speed of 3000rpm for 30min, collecting a supernatant of an upper layer 1/2, adding 30 parts by mass of deionized water into the collected supernatant, performing ultrasonic treatment at the same power and time for uniform dispersion for the last time, injecting the mixture into the centrifuge again at the same rotating speed and centrifuging time for the last time for centrifugation, collecting supernatant according to the above standard, and repeating the above steps for 10 times; freeze-drying the finally obtained fluorinated graphene dispersion liquid for 24 hours to obtain fluorinated graphene nano powder;
and step 3: preparation of polyurea A component: dehydrating 30 parts by mass of polyethylene glycol adipate glycol and 20 parts by mass of polyethylene glycol adipate glycol at the temperature of 120 ℃ for 5 hours, then adding 40 parts by mass of hexamethylene diisocyanate and 30 parts by mass of diphenylmethane diisocyanate, putting the mixture into an atmosphere furnace with nitrogen as protective gas, heating to 120 ℃ at the heating rate of 5 ℃, preserving heat for 3 hours, cooling along with the furnace, and taking out to obtain a polyurea component A;
and 4, step 4: preparation of polyurea B component: adding 10 parts by mass of amino-terminated polyether D-400, 10 parts by mass of amino-terminated polyether D-2000, 30 parts by mass of dialkyl toluene diphenylamine and 20 parts by mass of diethyl toluene diamine into a reaction kettle, stirring for 30min at a speed of 80r/min to uniformly mix the mixture, then heating the reaction kettle to 120 ℃ for reaction for 2h, after the reaction is finished, injecting nitrogen, opening cooling water to reduce the temperature to 50 ℃, and taking out the mixture after the temperature is reduced to obtain a polyurea component B;
and 5: preparing a polyurea composite coating: mixing 10 parts by mass of fluorinated graphene nano powder into 35 parts by mass of component B, uniformly dispersing to obtain a mixture, adding 65 parts by mass of component A and the mixture into connected spraying equipment, and heating to 60 ℃ for spraying; when the polyurea composite coating is sprayed, gauge pressures of pressure gauges of the component A and the mixture are controlled to be 1200-1500 Psi, pressure difference between the component A and the mixture is controlled to be less than 200Psi, the component A and the mixture are respectively sprayed to the surface of the metal base material in the step 1, and the composite coating in the embodiment 3 is obtained after solidification.
And (3) performance verification:
any one of the composite coatings prepared in examples 1 to 3 was selected, and as shown in fig. 1, it was observed that the coating had a smooth surface and no defects such as pinholes, projections, etc.
Testing the hydrophobic property of the composite coating: the composite coating is subjected to a wetting property test, as shown in fig. 2, a static contact angle is up to 165 degrees as can be seen from a contact angle image, which indicates that the coating has good hydrophobicity.
Testing the corrosion resistance of the composite coating: any one of the composite coatings prepared in examples 1 to 3 of the present invention was selected and subjected to electrochemical tests, as shown in fig. 3, it can be seen from the impedance curve that the coating has very high impedance, indicating that the coating has excellent corrosion resistance, thereby being capable of well protecting a metal substrate.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (4)
1. A preparation method of a super-hydrophobic and corrosion-resistant polyurea composite coating is characterized by comprising the following specific steps:
step 1: pretreating a metal substrate, namely polishing the metal substrate to be smooth and clean in surface by adopting 800-1200-mesh abrasive paper, then putting the polished metal substrate into a mixed solution of ethanol and acetone, ultrasonically cleaning the metal substrate for 1-2 hours by using ultrasonic equipment under the power of 60-80 w, and drying the metal substrate for 1-2 hours in an oven at the temperature of 60-80 ℃ after cleaning;
step 2: preparing fluorinated graphene: adding 5-30 parts by mass of ionic liquid and 1-8 parts by mass of graphite fluoride into 15-50 parts by mass of deionized water, carrying out ultrasonic treatment at 50-100 w power for 30min by using ultrasonic equipment to uniformly disperse the ionic liquid to obtain a dispersion, transferring the dispersion into a reaction kettle, heating to 180-220 ℃, reacting for 20-24 h to obtain a black mixed liquid, injecting the black mixed liquid into a centrifuge, centrifuging at the rotating speed of 2000-3000 rpm for 30-40 min, collecting a supernatant of an upper layer 1/2 after the completion, adding 15-30 parts by mass of deionized water into the collected supernatant, carrying out ultrasonic treatment at the same power and time for uniform dispersion, injecting the mixture into the centrifuge again for centrifuging at the same rotating speed and the same centrifuging time, collecting the supernatant at the standard time after the completion, and repeating for 5-10 times; freeze-drying the finally obtained fluorinated graphene dispersion liquid for 24 hours to obtain fluorinated graphene nano powder;
and step 3: preparation of polyurea A component: dehydrating 30-50 parts by mass of polycaprolactone polyol at 100-120 ℃ for 2-5 h, adding 40-70 parts by mass of diisocyanate, placing the mixture in an atmosphere furnace with protective gas, heating to 105-120 ℃ at a heating rate of 5-10 ℃, preserving heat for 2-3 h, cooling along with the furnace, and taking out to obtain a polyurea component A;
and 4, step 4: preparation of polyurea B component: adding 20-30 parts by mass of amino-terminated polyether and 40-60 parts by mass of amine chain extender into a reaction kettle, stirring at the speed of 50-100 r/min for 10-30 min to uniformly mix, then heating the reaction kettle to 100-120 ℃ for reaction for 2h, after the reaction is finished, injecting protective gas, opening cooling water to cool to 50-55 ℃, and taking out the cooled polyurea component B to obtain a polyurea component B;
and 5: preparing a polyurea composite coating: mixing 1-10 parts by mass of fluorinated graphene nano powder into 25-35 parts by mass of component B, uniformly dispersing to obtain a mixture, adding 50-65 parts by mass of component A and the mixture into well-connected spraying equipment, and heating to 60-70 ℃ for spraying; when the polyurea composite coating is sprayed, gauge pressure of pressure gauges of the component A and the mixture is controlled to be 1200-1500 Psi, pressure difference between the component A and the mixture is controlled to be below 200Psi, the component A and the mixture are respectively sprayed to the surface of the metal base material in the step 1, and the composite coating is obtained after solidification.
2. The method for preparing a polyurea composite coating having superhydrophobicity and corrosion resistance according to claim 1, wherein the ionic liquid in the step 2 is one or more of 1-butyl-3-methylimidazolium tetrafluoroborate, 1-dodecyl-3-methylimidazolium tetrafluoroborate, or 1-hexadecyl-3-methylimidazole bromide.
3. The method for preparing the polyurea composite coating with super hydrophobicity and corrosion resistance of claim 1, wherein the polycaprolactone polyol in the step 3 is one or more of poly (ethylene glycol adipate) glycol, poly (ethylene glycol monopropylene glycol adipate) glycol and poly (diethylene glycol adipate) glycol; the diisocyanate is one or more of hexamethylene diisocyanate, diphenylmethane diisocyanate, tetramethylxylylene diisocyanate and xylylene diisocyanate.
4. The method for preparing the polyurea composite coating with super hydrophobicity and corrosion resistance according to claim 1, wherein the amino terminated polyether in the step 4 is one or more of amino terminated polyether D-400, amino terminated polyether D-2000 and amino terminated polyether T-5000; the amine chain extender is one or a mixture of more of diethyl toluene diamine, dialkyl toluene diphenylamine and diacetyl ethylene diamine.
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| CN1817989A (en) * | 2006-01-20 | 2006-08-16 | 广州秀珀化工有限公司 | Spray-coating high-strength elastic waterproof paint of polyurea and construction thereof |
| RU2662164C1 (en) * | 2017-05-25 | 2018-07-24 | Общество с ограниченной ответственностью "ГАЗФЛЕКСИЗОЛ" | Polyurea composition for anti-corrosion protective coating of steel surfaces |
| US20190292672A1 (en) * | 2018-03-26 | 2019-09-26 | Nanotek Instruments, Inc. | Production process for metal matrix nanocomposite containing oriented graphene sheets |
| CN110950331A (en) * | 2019-12-02 | 2020-04-03 | 陕西科技大学 | Method for preparing fluorinated graphene dispersion liquid on large scale |
| CN110982402A (en) * | 2019-12-24 | 2020-04-10 | 青岛爱尔家佳新材料股份有限公司 | Pipeline heavy-duty anti-corrosion polyurea protective material and preparation method thereof |
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2021
- 2021-06-18 CN CN202110677723.5A patent/CN113321995A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1817989A (en) * | 2006-01-20 | 2006-08-16 | 广州秀珀化工有限公司 | Spray-coating high-strength elastic waterproof paint of polyurea and construction thereof |
| RU2662164C1 (en) * | 2017-05-25 | 2018-07-24 | Общество с ограниченной ответственностью "ГАЗФЛЕКСИЗОЛ" | Polyurea composition for anti-corrosion protective coating of steel surfaces |
| US20190292672A1 (en) * | 2018-03-26 | 2019-09-26 | Nanotek Instruments, Inc. | Production process for metal matrix nanocomposite containing oriented graphene sheets |
| CN110950331A (en) * | 2019-12-02 | 2020-04-03 | 陕西科技大学 | Method for preparing fluorinated graphene dispersion liquid on large scale |
| CN110982402A (en) * | 2019-12-24 | 2020-04-10 | 青岛爱尔家佳新材料股份有限公司 | Pipeline heavy-duty anti-corrosion polyurea protective material and preparation method thereof |
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Application publication date: 20210831 |