CN114713476B - Preparation method of double-sided synergistic functional coating for efficient environmental water vapor capture - Google Patents

Preparation method of double-sided synergistic functional coating for efficient environmental water vapor capture Download PDF

Info

Publication number
CN114713476B
CN114713476B CN202210299281.XA CN202210299281A CN114713476B CN 114713476 B CN114713476 B CN 114713476B CN 202210299281 A CN202210299281 A CN 202210299281A CN 114713476 B CN114713476 B CN 114713476B
Authority
CN
China
Prior art keywords
water
preparation
powder
sided
coating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202210299281.XA
Other languages
Chinese (zh)
Other versions
CN114713476A (en
Inventor
杨付超
王秋月
郭志光
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hubei University
Original Assignee
Hubei University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hubei University filed Critical Hubei University
Priority to CN202210299281.XA priority Critical patent/CN114713476B/en
Publication of CN114713476A publication Critical patent/CN114713476A/en
Application granted granted Critical
Publication of CN114713476B publication Critical patent/CN114713476B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • 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
    • B05D3/02—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 by baking
    • B05D3/0254—After-treatment
    • 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
    • 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
    • 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
    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • 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
    • 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
    • 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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2227—Oxides; Hydroxides of metals of aluminium
    • 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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C08K2003/2241—Titanium dioxide
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/20—Controlling water pollution; Waste water treatment
    • Y02A20/208—Off-grid powered water treatment
    • Y02A20/212—Solar-powered wastewater sewage treatment, e.g. spray evaporation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Paints Or Removers (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

The invention provides a preparation method of a double-sided synergistic functional coating for efficient environmental water vapor capture, which comprises the steps of preparation of a water collecting layer, preparation of radiation cooling functional particles, preparation of a radiation cooling coating and the like. The nano brown beetles can survive in the desert without water by collecting the small water drops in the air due to the unique alternate patterns on the back of the nano brown beetles. Inspired by the above, the invention takes the aluminum sheet as the substrate and obtains the wetting interphase pattern by mask spraying so as to improve the water collection efficiency. However, the heat released during condensation of the water droplets reduces the water collection rate. In order to control the re-evaporation rate of water drops, the invention adds a radiation cooling layer on the back of the water collecting layer to quickly release condensation heat. The radiation cooling layer adopts MgHPO 4 ·0.78H 2 O as a functional particle and P (VDF-HFP) as a binder. The water collecting device with the double-sided synergistic functional structure is simple to manufacture, the raw materials are green and pollution-free, and a new way is provided for developing a novel fresh water collecting device.

Description

Preparation method of double-sided synergistic functional coating for efficient environmental water vapor capture
Technical Field
The invention belongs to the technical field of preparation of gradient wettability surfaces, and particularly relates to a preparation method of a double-sided synergistic functional coating for efficient environmental water vapor capture, wherein the double-sided synergistic functional coating is used for fresh water collection on a hydrophilic-hydrophobic interphase surface.
Background
The collection of water from environmental mist is widely discussed as a solution to the shortage of fresh water resources in arid and underdeveloped regions. The nanometer brown beetle can be kept to survive in the desert with water shortage by collecting small water drops in the air due to the unique alternate pattern on the back of the brown beetle. The sprinkled Ha Layin ants can regulate body temperature in extremely hot environments in african desert, and can emit heat to the surrounding environment under the condition of full sunshine due to a series of densely arranged triangular hairs with unique shapes. The hydrophilic and hydrophobic water intersurface combination back radiation cooling technology inspired by the two organisms obviously improves the water collection efficiency and provides a new way for developing a novel fresh water collection device.
And preparing a water collecting layer between hydrophilic and hydrophobic phases on the surface of the aluminum sheet by adopting a mask spraying method. In order to improve the water collecting efficiency, a radiation cooling layer is added on the back of the water collecting layer. Using MgHPO 4 ·0.78H 2 High reflectivity of O in the solar spectrum band (0.2-2.5 μm) and high emissivity in the atmospheric window band (8-13 μm), radiating heat to the outside environment to cool the surface. The reduction in temperature helps to reduce the rate of re-evaporation of the water droplets, increases the rate of condensation, and thus increases the water collection efficiency.
Disclosure of Invention
The invention aims to provide a simple, convenient, economical and practical efficient water collecting device. The advantages of the hydrophilic surface and the hydrophobic surface are combined, the removal of water drops is accelerated, and the cooling coating solves the problem that the re-evaporation rate is accelerated due to the heat released in the condensation process of the water drops. The combination of the double-sided functional coating realizes high-efficiency water collection, and has certain application potential in solving the problem of shortage of fresh water resources.
The technical scheme for realizing the purpose of the invention is as follows:
a preparation method of a double-sided synergistic functional coating for efficient environmental water vapor capture is characterized by comprising the following steps:
A. preparing a water collecting layer: 1.65-1.69g of Al 2 O 3 Powder and 0.31-0.35g TiO 2 Adding the powder into 20mL of ethanol, stirring uniformly, adding 0.2-0.4mL of hexadecyl trimethoxy silane, and continuing stirring for 10min;adding 1.3-1.7g of epoxy resin and 0.75g of curing agent into the system, finally carrying out ultrasonic treatment on the solution for 20min and continuously stirring to obtain milky hydrophobic suspension coating; preparing a hydrophobic coating by using an aluminum sheet as a substrate and adopting a mask spraying method, obtaining hydrophilic and hydrophobic alternate patterned surfaces by using a mask in the spraying process, and drying the sample in an oven at 60 ℃ for 4 hours after the spraying is finished;
B. preparation of radiation cooling functional particles: 16.264g MgCl was weighed 2 ·6H 2 Dissolving O powder in 100mL of deionized water; 7.84g of H are then weighed out 3 PO 4 Adding MgCl 2 ·6H 2 Stirring in an O aqueous solution for 2h at room temperature by using a magnetic stirrer, controlling the dropping speed by using ammonia water during the stirring, slowly adjusting the pH value to 8, stirring for 4h, and fully reacting to obtain a precipitate; standing at room temperature for 12-24h, vacuum filtering, washing to obtain white solid, and drying at 80 deg.C for 6-8h in drying oven to obtain MgHPO 4 ·0.78H 2 O powder is reserved;
C. preparation of radiation cooling coating: gradually and slowly adding 0.2g of P (VDF-HFP) into 10mL of ethanol and stirring until the mixture is clear and free of bubbles, and then gradually adding a small amount of 2.9g of the powder prepared in the step B into the ethanol solution; then adding 1.5g of epoxy resin and 0.5g of curing agent into the solution and magnetically stirring for 30min to obtain white milky viscous liquid; and D, dripping the liquid on the back of the water collecting layer prepared in the step A, and then putting the water collecting layer into an oven at the temperature of 60 ℃ for drying for 4-8 hours to obtain the radiation cooling coating.
Further, al in the step A 2 O 3 The powder is commercial, has a particle size of 30nm 2 The powder was commercially available with a particle size of 25nm.
Further, the modifying agent hexadecyl trimethoxy silane added in the step A is 0.4mL.
Further, the water collecting layer in the step A is prepared by adopting a mask spraying method, the spraying distance is 20cm, and the pressure intensity of a spray head is 0.68MPa.
Further, in the step B, the molar ratio of the Mg element to the P element in the preparation of the radiation cooling functional particles is 1:1 configuration.
The invention has the beneficial effects that: compared with the prior art, the invention has the advantages that:
1. the preparation process is simple, the raw materials are easy to obtain, and the cost is low.
2. The special surface pattern and the cooling effect of the back surface of the water collecting device improve the water collecting efficiency by 67.33 percent.
3. The contact angle of the hydrophobic area of the water collecting layer is 147 degrees, and the contact angle of the hydrophilic area is 76 degrees.
4. The radiant cooling layer of the water collection device can significantly reduce the temperature.
5. The water collecting device can be recycled for many times, and the performance is not influenced by the soaking of water.
Drawings
FIG. 1: the water collecting coating of the water collecting device obtained in example 1 was carried out for the wetting of water and the surface topography (panel a), XPS spectra (panel b) and XPS elemental analysis (panels c and d).
FIG. 2: examples solar emissivity and absorptivity of the radiation cooling layer of the water collecting device obtained in example 1 (fig. a and b), XRD spectrum (fig. c), surface morphology (fig. e and f), and electron micrograph of the radiation cooling functional particles (fig. d).
FIG. 3: XPS elemental analysis (panels a, b and c) and infrared absorption spectrum (panel d) of the radiation cooling layer of the water collecting apparatus obtained in example 1 were carried out.
FIG. 4: example 1 the infrared thermal imaging of the radiant cooling layer of the water collection device obtained.
FIG. 5: the graph a obtained in the example 1 is an optical picture of a water collection experiment carried out by a water collection device, the graph b is the change of the efficiency of an original aluminum sheet, an aluminum sheet fully sprayed with a hydrophobic coating, an aluminum sheet patterned and sprayed with a hydrophobic coating and an aluminum sheet after a radiation cooling layer is added at the back in a repeated water collection experiment, the graph c is a water drop growth schematic diagram of a patterned surface, and the graph d is the water collection efficiency corresponding to different inclination angles of a sample.
FIG. 6: example 1 four samples were taken as optical pictures of water collection experiments at different times.
Detailed Description
In order to better understand the present invention, the following examples are further provided to illustrate the present invention, but the present invention is not limited to the following examples. Various changes or modifications may be effected therein by one skilled in the art and such equivalents are intended to be within the scope of the invention as defined by the claims appended hereto.
Example 1:
1, preparing a water collecting layer A: 1.67g of Al 2 O 3 Powder and 0.33g TiO 2 The powder was added to 20mL of ethanol, stirred well, then 0.4mL of hexadecyltrimethoxysilane was added and stirring was continued for 10min. 1.5g of epoxy resin and 0.75g of curing agent are added into the system, and finally the solution is subjected to ultrasonic treatment for 20min and is continuously stirred to obtain the milky-white super-hydrophobic suspension coating. And preparing the hydrophilic-hydrophobic water interphase coating on the patterned surface by using an aluminum sheet as a substrate and adopting a mask spraying method. The spraying distance is 20cm, and the pressure of the spray head is 0.68MPa. After the spraying, the sample was placed in an oven to dry at 60 ℃ for 4h.
Synthesis of radiation cooling functional particles B: 16.264g of MgCl was weighed 2 ·6H 2 Powder O, dissolved in 100mL of deionized water. 7.84g of H are then weighed out 3 PO 4 Adding MgCl 2 ·6H 2 Stirring in a magnetic stirrer for 2h at room temperature in the O aqueous solution, slowly adjusting the pH value to 8 by controlling the dropping speed with ammonia water, stirring for 4h, and fully reacting to obtain a precipitate. Standing at room temperature for 24h, filtering, washing to obtain white solid, drying at 80 deg.C for 6h in a drying oven to obtain MgHPO 4 ·0.78H 2 And O powder is ready for use.
3, preparation of radiation cooling coating C: 0.2g of P (VDF-HFP) are added slowly in succession to 10mL of ethanol and stirred until clear and bubble-free, and then 2.9g of the previously prepared powder are weighed out and added in small portions to the ethanol solution in succession. 1.5g of epoxy resin and 0.5g of curing agent were then added to the solution and magnetically stirred for 30min to give a white milky viscous liquid. And dripping the liquid on the back of the water collecting layer, and then putting the water collecting layer into a 60 ℃ oven to be dried for 4 hours to obtain the radiation cooling coating.
Example 2:
1, preparing a water collecting layer A: 1.67g of Al 2 O 3 Powder and 0.33g TiO 2 Adding the powder into 20mL of ethanol, stirring uniformly, and adding 0.2mL of hexadecyl triylThe methoxysilane was stirred for another 10min. 1.5g of epoxy resin and 0.75g of curing agent are added into the system, and finally the solution is subjected to ultrasonic treatment for 20min and is continuously stirred to obtain the milky-white super-hydrophobic suspension coating. And preparing the hydrophilic-hydrophobic water interphase coating on the patterned surface by using an aluminum sheet as a substrate and adopting a mask spraying method. The spraying distance is 20cm, and the pressure intensity of the spray head is 0.2MPa. After the spraying, the sample was placed in an oven to dry at 60 ℃ for 4h.
Synthesis of radiation cooling functional particles B: 16.264g of MgCl was weighed 2 ·6H 2 Powder O, dissolved in 100mL of deionized water. 7.84g of H are then weighed out 3 PO 4 Adding MgCl 2 ·6H 2 Stirring in a magnetic stirrer for 2h at room temperature in the O aqueous solution, slowly adjusting the pH value to 8 by controlling the dropping speed with ammonia water, stirring for 4h, and fully reacting to obtain a precipitate. Standing at room temperature for 24h, filtering, washing to obtain white solid, drying at 80 deg.C for 6h in a drying oven to obtain MgHPO 4 ·0.78H 2 And O powder is ready for use.
3, preparation of radiation cooling coating C: 0.2g of P (VDF-HFP) are added slowly in succession to 10mL of ethanol and stirred until clear and bubble-free, and then 2.9g of the previously prepared powder are weighed out and added in small portions to the ethanol solution in succession. 1.5g of epoxy resin and 0.5g of curing agent were then added to the solution and magnetically stirred for 30min to give a white milky viscous liquid. And dripping the liquid on the back of the water collecting layer, and then putting the water collecting layer into a 60 ℃ oven to be dried for 4 hours to obtain the radiation cooling coating.
Example 3:
1, preparing a water collecting layer A: 1.67g of Al 2 O 3 Powder and 0.33g TiO 2 The powder was added to 20mL of ethanol, stirred well, then 0.4mL of hexadecyltrimethoxysilane was added and stirring was continued for 10min. 1.5g of epoxy resin and 0.75g of curing agent are added into the system, and finally the solution is subjected to ultrasonic treatment for 20min and is continuously stirred to obtain the milky-white super-hydrophobic suspension coating. And preparing the hydrophilic-hydrophobic interphase coating on the patterned surface by using an aluminum sheet as a substrate through a mask spraying method. The spraying distance is 20cm, and the pressure intensity of the spray head is 0.68MPa. After the spraying, the sample was placed in an oven to dry at 60 ℃ for 4h.
2, radiation cooling of the functional particles BSynthesizing: 16.264g of MgCl was weighed 2 ·6H 2 O powder, dissolved in 100mL deionized water. 7.84g of H are then weighed out 3 PO 4 Adding MgCl 2 ·6H 2 Stirring in a magnetic stirrer for 2h at room temperature in the O aqueous solution, slowly adjusting the pH value to 8 by controlling the dropping speed with ammonia water, stirring for 4h, and fully reacting to obtain a precipitate. Standing at room temperature for 12h, filtering, washing to obtain white solid, drying at 80 deg.C for 8h in a drying oven to obtain MgHPO 4 ·0.78H 2 And O powder is ready for use.
3, preparation of radiation cooling coating C: 0.2g of P (VDF-HFP) was added gradually slowly to 10mL of ethanol and stirred until clear and bubble-free, and then 2.9g of the previously prepared powder was weighed out and added gradually to the ethanol solution. 1.5g of epoxy resin and 0.5g of curing agent were then added to the solution and magnetically stirred for 30min to give a white milky viscous liquid. And dripping the liquid on the back of the water collecting layer, and then putting the water collecting layer into a 60 ℃ oven to be dried for 8h to obtain the radiation cooling coating.
To summarize: the nano brown beetles can survive in the desert without water by collecting the small water drops in the air due to the unique alternate patterns on the back of the nano brown beetles. Inspired by the above, the invention takes the aluminum sheet as the substrate and obtains the wetting interphase pattern by mask spraying so as to improve the water collection efficiency. However, the heat released during condensation of the water droplets reduces the water collection rate. In order to control the re-evaporation rate of water drops, the invention adds a radiation cooling layer on the back of the water collecting layer to quickly release condensation heat. The radiation cooling layer adopts MgHPO 4 ·0.78H 2 O as a functional particle and P (VDF-HFP) as a binder. The water collecting device with the double-sided synergistic functional structure is simple to manufacture, the raw materials are green and pollution-free, and a new way is provided for developing a novel fresh water collecting device.
Finally, it should be noted that the above-mentioned contents are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, and that the simple modifications or equivalent substitutions of the technical solutions of the present invention by those of ordinary skill in the art can be made without departing from the spirit and scope of the technical solutions of the present invention.

Claims (4)

1. A preparation method of a double-sided synergistic functional coating for efficient environmental water vapor capture is characterized by comprising the following steps:
A. preparing a water collecting layer: mixing 1.65-1.69g Al 2 O 3 Powder and 0.31-0.35-g TiO 2 Adding the powder into 20mL ethanol, stirring uniformly, adding 0.2-0.4mL hexadecyltrimethoxysilane, and stirring for 10min; adding 1.3-1.7g epoxy resin and 0.75g curing agent into the system, finally carrying out ultrasonic treatment on the solution for 20min and continuously stirring to obtain milky hydrophobic suspension paint; preparing a hydrophobic coating by using an aluminum sheet as a substrate and adopting a mask spraying method, obtaining hydrophilic and hydrophobic alternate patterned surfaces by using a mask in the spraying process, and drying a sample in an oven at 60 ℃ for 4h after the spraying is finished;
B. preparation of radiation cooling functional particles: mgCl of 16.264g is weighed 2 · 6H 2 O powder, dissolved with 100mL deionized water; then 7.84g H is weighed 3 PO 4 Adding MgCl 2 · 6H 2 In the O water solution, stirring 2h by a magnetic stirrer at room temperature, controlling the dropping speed by ammonia water in the process, slowly adjusting the pH value to 8, stirring 4h, and fully reacting to obtain a precipitate; standing at room temperature for 12-24h, vacuum filtering, washing to obtain white solid, drying at 80 deg.C for 6-8 hr in drying oven to obtain MgHPO 4 · 0.78H 2 O powder is reserved;
C. preparation of radiation cooling coating: gradually adding 0.2g P (VDF-HFP) into 10mL ethanol and stirring until clear and bubble-free, then weighing 2.9g of the powder prepared in step B and gradually adding into the ethanol solution; then adding 1.5g epoxy resin and 0.5g curing agent into the solution and magnetically stirring for 30min to obtain white milky viscous liquid; and D, dripping the liquid on the back of the water collecting layer prepared in the step A, and then putting the water collecting layer into an oven at the temperature of 60 ℃ for drying for 4-8 hours to obtain the radiation cooling coating.
2. The method for preparing the double-sided co-functional coating for efficient environmental moisture capture as claimed in claim 1, wherein: al in the step A 2 O 3 Powder ofIs commercially available and has a particle size of 30nm, tiO 2 The powder was commercially available and had a particle size of 25nm.
3. The method of claim 1 for producing a double-sided co-functional coating for efficient environmental moisture capture, wherein: the modifier hexadecyl trimethoxy silane added in the step A is 0.4mL.
4. The method for preparing the double-sided co-functional coating for efficient environmental moisture capture as claimed in claim 1, wherein: the water collecting layer in the step A is prepared by adopting a mask spraying method, the spraying distance is 20cm, and the pressure intensity of a spray head is 0.68MPa.
CN202210299281.XA 2022-03-25 2022-03-25 Preparation method of double-sided synergistic functional coating for efficient environmental water vapor capture Active CN114713476B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210299281.XA CN114713476B (en) 2022-03-25 2022-03-25 Preparation method of double-sided synergistic functional coating for efficient environmental water vapor capture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210299281.XA CN114713476B (en) 2022-03-25 2022-03-25 Preparation method of double-sided synergistic functional coating for efficient environmental water vapor capture

Publications (2)

Publication Number Publication Date
CN114713476A CN114713476A (en) 2022-07-08
CN114713476B true CN114713476B (en) 2022-12-09

Family

ID=82239243

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210299281.XA Active CN114713476B (en) 2022-03-25 2022-03-25 Preparation method of double-sided synergistic functional coating for efficient environmental water vapor capture

Country Status (1)

Country Link
CN (1) CN114713476B (en)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103205994A (en) * 2013-03-13 2013-07-17 武汉大学 Moisture capture device
KR20160143308A (en) * 2015-06-05 2016-12-14 도레이첨단소재 주식회사 Hydrophilic polypropylene nonwoven fabric for cultivating rice and the producing method thereof
CN109161241A (en) * 2018-08-21 2019-01-08 哈尔滨工业大学（威海） A kind of radiative cooling coating and preparation method thereof with self-cleaning function
CN110665342A (en) * 2019-10-06 2020-01-10 湖北大学 Preparation method of mixed hydrophilic and hydrophobic material surface for efficiently collecting water mist based on spraying
CN111607983A (en) * 2020-05-15 2020-09-01 浙江理工大学 Super-hydrophobic daytime passive radiation refrigeration fabric and preparation method thereof
CN111875337A (en) * 2020-07-14 2020-11-03 绍兴百立盛新材料科技有限公司 Inorganic cooling coating and preparation method thereof
US10927244B1 (en) * 2019-08-21 2021-02-23 Shaanxi University Of Science & Technology Superhydrophobic and self-cleaning radiative cooling film and preparation method thereof
CN113385393A (en) * 2021-05-31 2021-09-14 中物院成都科学技术发展中心 Desert beetle structure-imitated composite material and preparation method thereof
CN113896264A (en) * 2021-10-14 2022-01-07 中国科学院宁波材料技术与工程研究所 Radiation refrigeration water resource acquisition device
EP3954741A1 (en) * 2020-08-11 2022-02-16 Korea University Research and Business Foundation Radiative cooling device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10323151B2 (en) * 2017-02-27 2019-06-18 Palo Alto Research Center Incorporated Coating to cool a surface by passive radiative cooling

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103205994A (en) * 2013-03-13 2013-07-17 武汉大学 Moisture capture device
KR20160143308A (en) * 2015-06-05 2016-12-14 도레이첨단소재 주식회사 Hydrophilic polypropylene nonwoven fabric for cultivating rice and the producing method thereof
CN109161241A (en) * 2018-08-21 2019-01-08 哈尔滨工业大学（威海） A kind of radiative cooling coating and preparation method thereof with self-cleaning function
US10927244B1 (en) * 2019-08-21 2021-02-23 Shaanxi University Of Science & Technology Superhydrophobic and self-cleaning radiative cooling film and preparation method thereof
CN110665342A (en) * 2019-10-06 2020-01-10 湖北大学 Preparation method of mixed hydrophilic and hydrophobic material surface for efficiently collecting water mist based on spraying
CN111607983A (en) * 2020-05-15 2020-09-01 浙江理工大学 Super-hydrophobic daytime passive radiation refrigeration fabric and preparation method thereof
CN111875337A (en) * 2020-07-14 2020-11-03 绍兴百立盛新材料科技有限公司 Inorganic cooling coating and preparation method thereof
EP3954741A1 (en) * 2020-08-11 2022-02-16 Korea University Research and Business Foundation Radiative cooling device
CN113385393A (en) * 2021-05-31 2021-09-14 中物院成都科学技术发展中心 Desert beetle structure-imitated composite material and preparation method thereof
CN113896264A (en) * 2021-10-14 2022-01-07 中国科学院宁波材料技术与工程研究所 Radiation refrigeration water resource acquisition device

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
A flexible film to block solar radiation for daytime radiative cooling;Ji Zhang等;《Solar Energy Materials and Solar Cells》;20210228;全文 *
铝基超疏水表面凝露初期的实验研究;武卫东等;《制冷技术》;20170228;第37卷(第1期);全文 *

Also Published As

Publication number Publication date
CN114713476A (en) 2022-07-08

Similar Documents

Publication Publication Date Title
CN107936389A (en) A kind of composite membrane and preparation method thereof
CN109161241A (en) A kind of radiative cooling coating and preparation method thereof with self-cleaning function
Shen et al. A new strategy to synthesize TiO2-hollow spheres using carbon spheres as template
CN110387751A (en) It is a kind of to radiate from cooling function fabric and preparation method thereof
CN106732724B (en) A kind of N doping TiO2The preparation method of hollow nano-material
CN103803814A (en) Preparation method of transparent super-hydrophobic coating
CN109761281B (en) Fibrous cesium tungsten bronze nano powder and preparation method and application thereof
CN104087086B (en) Hydrophilic aluminium foil of a kind of organic inorganic hybridized paint and its preparation method and application
CN102408760B (en) Heat-insulating coating and preparation method thereof
CN110171809A (en) A kind of aluminum phosphate uniformed powder material and preparation method thereof for radiation refrigeration
CN111073450A (en) Preparation method of active photo-thermal deicing coating with super-hydrophobic property
CN114713476B (en) Preparation method of double-sided synergistic functional coating for efficient environmental water vapor capture
WO2022166345A1 (en) Large-scale preparation method for three-dimensional porous nano composite cooling thin film
CN113372903A (en) Preparation method of perovskite nano composite material with core-shell structure
CN102329533B (en) Preparation method of composite tin antimony oxide thermal insulation material
CN108774447A (en) A kind of carbon-silver microballoon/epoxy resin super-hydrophobic coat preparation method
CN106238071A (en) A kind of method using absorption calcination method to prepare ZnS@C composite
CN108298582A (en) One kind is by VO2The preparation method of hollow ball and film that nanoscale twins surround
CN112480782A (en) Preparation method of graphene/carbon quantum dot composite powder modified water-based paint
CN109954642A (en) A kind of corrosion-resistant hydrophilic aluminium foil production and processing technology
CN114634727B (en) Radiation cooling coating structure for building outer surface and manufacturing method thereof
KR20170023527A (en) High-efficiency solar cell absorber film and a method of manufacturing the same using a wet process
CN116004114A (en) Light reflection heat-preservation weather-resistant coating and preparation method and application thereof
CN110105871A (en) A kind of preparation method pressing down ice coating using iron copper manganese Metal salt and nano silica as the super-hydrophobic photo-thermal of raw material
CN108675648B (en) Preparation method of durable hydrophobic anti-reflection film for surface of vacuum heat collecting tube

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant