CN115073981B - Preparation method of water-based nano heat-preservation heat-insulation coating - Google Patents
Preparation method of water-based nano heat-preservation heat-insulation coating Download PDFInfo
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- CN115073981B CN115073981B CN202210607606.6A CN202210607606A CN115073981B CN 115073981 B CN115073981 B CN 115073981B CN 202210607606 A CN202210607606 A CN 202210607606A CN 115073981 B CN115073981 B CN 115073981B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 238000000576 coating method Methods 0.000 title claims abstract description 47
- 239000011248 coating agent Substances 0.000 title claims abstract description 46
- 238000009413 insulation Methods 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title claims abstract description 25
- 238000004321 preservation Methods 0.000 title claims abstract description 22
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 134
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 67
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims abstract description 47
- 239000011591 potassium Substances 0.000 claims abstract description 47
- 229910052700 potassium Inorganic materials 0.000 claims abstract description 47
- 238000003756 stirring Methods 0.000 claims abstract description 39
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims abstract description 34
- 239000002033 PVDF binder Substances 0.000 claims abstract description 32
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims abstract description 32
- 239000002121 nanofiber Substances 0.000 claims abstract description 31
- 239000002135 nanosheet Substances 0.000 claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 29
- 239000000839 emulsion Substances 0.000 claims abstract description 28
- 239000004964 aerogel Substances 0.000 claims abstract description 27
- 239000006185 dispersion Substances 0.000 claims abstract description 27
- 239000000843 powder Substances 0.000 claims abstract description 23
- 239000002002 slurry Substances 0.000 claims abstract description 22
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 20
- 229910000027 potassium carbonate Inorganic materials 0.000 claims abstract description 17
- 239000000725 suspension Substances 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- 239000010445 mica Substances 0.000 claims abstract description 13
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 13
- 239000012046 mixed solvent Substances 0.000 claims abstract description 13
- 238000001035 drying Methods 0.000 claims abstract description 12
- 239000003063 flame retardant Substances 0.000 claims abstract description 12
- CTENFNNZBMHDDG-UHFFFAOYSA-N Dopamine hydrochloride Chemical compound Cl.NCCC1=CC=C(O)C(O)=C1 CTENFNNZBMHDDG-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000007853 buffer solution Substances 0.000 claims abstract description 11
- 239000013078 crystal Substances 0.000 claims abstract description 11
- 229960001149 dopamine hydrochloride Drugs 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 238000001354 calcination Methods 0.000 claims abstract description 6
- 238000001914 filtration Methods 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 238000005406 washing Methods 0.000 claims abstract description 6
- 238000005303 weighing Methods 0.000 claims abstract description 6
- 150000003608 titanium Chemical class 0.000 claims abstract description 5
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 30
- 239000011324 bead Substances 0.000 claims description 30
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 22
- 239000000243 solution Substances 0.000 claims description 22
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 20
- 239000008367 deionised water Substances 0.000 claims description 20
- 229910021641 deionized water Inorganic materials 0.000 claims description 20
- 239000002904 solvent Substances 0.000 claims description 20
- 239000002131 composite material Substances 0.000 claims description 16
- 239000000919 ceramic Substances 0.000 claims description 15
- 239000011521 glass Substances 0.000 claims description 15
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 14
- 229910052760 oxygen Inorganic materials 0.000 claims description 14
- 239000001301 oxygen Substances 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 12
- 239000010410 layer Substances 0.000 claims description 11
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 10
- 230000001804 emulsifying effect Effects 0.000 claims description 10
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 10
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 9
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 8
- 238000002207 thermal evaporation Methods 0.000 claims description 8
- VXUYXOFXAQZZMF-UHFFFAOYSA-N titanium(IV) isopropoxide Chemical compound CC(C)O[Ti](OC(C)C)(OC(C)C)OC(C)C VXUYXOFXAQZZMF-UHFFFAOYSA-N 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 239000002518 antifoaming agent Substances 0.000 claims description 6
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 6
- 239000000347 magnesium hydroxide Substances 0.000 claims description 6
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 6
- 239000003960 organic solvent Substances 0.000 claims description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 238000010041 electrostatic spinning Methods 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 238000011068 loading method Methods 0.000 claims description 5
- 239000012528 membrane Substances 0.000 claims description 5
- 238000010008 shearing Methods 0.000 claims description 5
- 238000009987 spinning Methods 0.000 claims description 5
- 238000001291 vacuum drying Methods 0.000 claims description 5
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 4
- DKUYEPUUXLQPPX-UHFFFAOYSA-N dibismuth;molybdenum;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Mo].[Mo].[Bi+3].[Bi+3] DKUYEPUUXLQPPX-UHFFFAOYSA-N 0.000 claims description 4
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 claims description 4
- RTOOMIOWOJBNTK-UHFFFAOYSA-K sodium;zinc;phosphate Chemical compound [Na+].[Zn+2].[O-]P([O-])([O-])=O RTOOMIOWOJBNTK-UHFFFAOYSA-K 0.000 claims description 4
- YHWCPXVTRSHPNY-UHFFFAOYSA-N butan-1-olate;titanium(4+) Chemical compound [Ti+4].CCCC[O-].CCCC[O-].CCCC[O-].CCCC[O-] YHWCPXVTRSHPNY-UHFFFAOYSA-N 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000003381 stabilizer Substances 0.000 claims description 3
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims 10
- 229910052681 coesite Inorganic materials 0.000 claims 5
- 229910052906 cristobalite Inorganic materials 0.000 claims 5
- 239000000377 silicon dioxide Substances 0.000 claims 5
- 235000012239 silicon dioxide Nutrition 0.000 claims 5
- 229910052682 stishovite Inorganic materials 0.000 claims 5
- 229910052905 tridymite Inorganic materials 0.000 claims 5
- 229910004298 SiO 2 Inorganic materials 0.000 abstract description 21
- 238000007789 sealing Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 8
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 5
- 239000011810 insulating material Substances 0.000 description 5
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 3
- 239000002250 absorbent Substances 0.000 description 3
- 230000002745 absorbent Effects 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 206010000369 Accident Diseases 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 239000011490 mineral wool Substances 0.000 description 2
- 239000002159 nanocrystal Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical group [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000005411 Van der Waals force Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000000845 anti-microbial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000011381 foam concrete Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000011491 glass wool Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000003446 ligand Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011325 microbead Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Classifications
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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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/004—Reflecting paints; Signal 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant 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
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- 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
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/328—Phosphates of heavy metals
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
The invention relates to a preparation method of a water-based nanometer heat preservation and heat insulation coating, which comprises the following specific steps: 1) Dissolving titanium salt in a mixed solvent and uniformly stirring; reacting, cooling, washing and drying to disperse titanium dioxide nanoclusters; dispersing the titanium dioxide nano-sheet in a buffer solution, adding dopamine hydrochloride, stirring, filtering and calcining to obtain the controllable high-dispersion two-dimensional ultrathin titanium dioxide nano-sheet. 2) Preparing PVDF/(potassium carbonate and titanium dioxide) nanofiber felt; the potassium hexatitanate crystal/PVDF nanofiber felt is obtained through low-temperature treatment; pure O 2 is used as atmosphere, heating, sealing, cooling after keeping for 20-30 min, and collecting whisker samples. 3) Weighing raw materials, and preparing aqueous nano SiO 2 aerogel suspension emulsion; dispersing mica powder, adding near infrared reflecting material and fire retardant, and stirring; preparing synthetic slurry; adding aerogel suspension emulsion, synthetic slurry, film forming auxiliary agent and other auxiliary agents into a mixed product of materials such as mica powder, stirring at a low speed, obtaining the water-based nano heat-insulating coating, and coating and drying to obtain the coating.
Description
Technical Field
The invention relates to the technical field of heat preservation coating preparation, in particular to a novel water-based nanometer heat preservation heat-insulation coating and a preparation method thereof.
Background
The coating is a continuous film which is coated on the surface of the protected or decorated object and can form firm adhesion with the coated object, and is usually a viscous liquid prepared by using resin, oil or emulsion as main materials, adding or not adding pigment and filler, adding corresponding auxiliary agents and using organic solvent or water.
At present, along with the continuous improvement of the energy-saving requirements of buildings, the comfort requirements of people on living, working, learning, entertainment and other places are also continuously improved, and on the premise that the places are ensured to be warm in winter and cool in summer, the expenditure of energy use is also continuously reduced, and the heat-insulating coating is often required to be used for reforming the heat-insulating areas such as the existing building outer walls or roofs and the like, so that the outer walls have the functions of heat preservation, heat insulation and the like. However, the traditional building heat insulation material is mostly an organic heat insulation material, and has poor fireproof performance. In recent years, serious fire accidents of external heat preservation engineering of buildings continuously occur in China, the loss is serious, and serious influence is caused in the national range. Aiming at the major fire accidents, the living building department and the public security department clearly stipulate that the heat insulation and preservation material of the outer wall of the civil building in China must adopt a building with the combustion performance of A level or B1 level and the height of less than 24m, the combustion performance of the heat preservation material is not lower than B2 level, and meanwhile, the fireproof isolation belt is arranged, so that the application range of the traditional heat insulation and preservation material of the building in the building engineering is greatly limited. Inorganic heat-insulating materials, such as rock wool, mineral wool, glass wool, foam concrete, vitrified microbeads and the like, have poor heat conductivity and heat-insulating performance even fail when meeting water, and are difficult to achieve ideal heat-insulating and heat-insulating energy-saving effects when used alone, although the combustion performance reaches the A level.
The environment-friendly water-based nanometer heat-insulating material technology with excellent heat insulation, fireproof safety and environmental protection is developed, and the inorganic nanometer material and the inorganic heat-insulating material are compounded and matched with film forming and functional auxiliary agents to prepare the serous heat-insulating material with adjustable thermal performance. The heat insulation and energy conservation technology and the material can greatly improve the heat insulation and heat conservation effect of the inorganic material, and have excellent environmental protection and fireproof performance.
Therefore, the controllable high-dispersion two-dimensional ultrathin titanium dioxide nanosheets are added into the novel water-based nano heat-insulating coating, have larger specific surface area and more reaction sites, and can better improve the ageing resistance, heat insulation performance of the coating; in addition, the potassium hexatitanate whisker prepared by the nanofiber template-induced low-temperature heat treatment combined with the flowing oxygen-assisted thermal evaporation method has high yield, and has excellent high-temperature resistance compared with the potassium hexatitanate whisker synthesized by the traditional method. Therefore, the water-based nanometer heat-insulating coating prepared based on the two improved materials has the advantages of excellent heat insulation and heat preservation, fire prevention safety and environmental protection, and the service life of the coating is prolonged.
Disclosure of Invention
In order to achieve the above purpose, the present invention provides the following technical solutions: a novel water-based nanometer heat preservation and heat insulation coating and a preparation method thereof comprise the following steps,
The invention relates to a preparation method of a water-based nanometer heat preservation and heat insulation coating. The method is characterized by comprising the following specific steps:
1) Preparation of controllable high-dispersion two-dimensional double-layer ultrathin titanium dioxide nanosheets
(1) Dissolving titanium salt in a mixed solvent of ethylene glycol and deionized water, magnetically stirring for 10-20 min until the solution is uniformly mixed, transferring into a reaction kettle, reacting for 20-24 h at 200-240 ℃, cooling to room temperature, washing 3-5 times with deionized water and an organic solvent, and then placing in a vacuum drying oven for overnight drying at 100-120 ℃ to obtain dispersed titanium dioxide nanoclusters;
(2) Dispersing the titanium dioxide nanoclusters obtained in the step (1) in 100-150 mL of buffer solution, and then adding dopamine hydrochloride into the buffer solution, wherein the mass ratio of the titanium dioxide nanoclusters to the dopamine hydrochloride is (2-5): and 1, magnetically stirring the suspension for 24-30 h at room temperature, filtering, and calcining in a muffle furnace at a speed of 1-2 ℃/min at 400-500 ℃ for 3-5 h to finally obtain the controllable high-dispersion two-dimensional double-layer ultrathin titanium dioxide nanosheets.
2) Preparation of potassium hexatitanate whisker by nano-fiber template induced low-temperature heat treatment combined with flowing oxygen auxiliary thermal evaporation method
(1) Dissolving polyvinylidene fluoride in a mixed solvent of N, N-dimethylformamide and acetone, wherein the volume ratio of the N, N-dimethylformamide to the acetone is 1-3: 1, a step of; heating the solution to 50-55 ℃ until the polyvinylidene fluoride is completely dissolved;
(2) Adding potassium carbonate and titanium dioxide into the solution, continuously stirring to form a uniform solution, and preparing PVDF/(potassium carbonate and titanium dioxide) nanofiber felt by adopting an electrostatic spinning method under the voltage of 10-15 KV; the distance between the receiving plate and the spinning end is 10-15 cm;
(3) Carrying out low-temperature treatment on PVDF/(potassium carbonate and titanium dioxide) nanofiber felt at 140-180 ℃ for 12-24 hours to obtain potassium hexatitanate crystal powder/PVDF nanofiber felt;
(4) In order to improve the formation of potassium hexatitanate whisker, pure O 2 is adopted as flowing atmosphere, the flow speed is 6-8L/min, a pipe of aluminum oxide is heated to 600-750 ℃ in a muffle furnace, then potassium hexatitanate crystal powder/PVDF nanofiber felt is placed in the pipe of aluminum oxide to be sealed, the oxygen partial pressure is 50-60 KPa, the pipe is cooled to room temperature after being kept for 20-30 min, and a potassium hexatitanate whisker sample is collected through a membrane filter placed between a vacuum pipe and a vacuum pump.
3) Preparation of water-based nano heat-preservation heat-insulation coating
(1) Weighing the following raw materials in weight: 20 parts of solvent, 22 parts of acrylic weather-resistant emulsion, 10 parts of near infrared reflecting material, 10 parts of nano hollow glass beads, 10 parts of composite nano ceramic beads, 3.5 parts of SiO 2 aerogel, 3 parts of mica powder, 6 parts of potassium hexatitanate whisker, 10 parts of controllable high-dispersion two-dimensional ultrathin titanium dioxide nanosheets, 1 part of film forming auxiliary agent, 0.5 part of ultraviolet absorber, 2 parts of flame retardant and 2 parts of other auxiliary agents;
(2) Placing the acrylic emulsion and the SiO 2 aerogel into a sealed homogenizing emulsifying machine for stirring and mixing, so that the SiO 2 aerogel is fully dispersed, mixed and uniformly compounded in the emulsion to obtain a water-based nano SiO 2 aerogel suspension emulsion;
(3) Dispersing mica powder in a high-speed stirrer, and then placing the near infrared reflecting material and the flame retardant into the high-speed stirrer for continuous stirring until the materials are uniformly mixed;
(4) Loading the controllable high-dispersion two-dimensional ultrathin titanium dioxide nanosheets, potassium hexatitanate whiskers and a solvent into a sealed homogenizing emulsifying machine for high-speed shearing and grinding to obtain premixed slurry, adding nano hollow glass beads and composite nano ceramic beads into the prepared premixed slurry, and continuously stirring and mixing to fully disperse the controllable high-dispersion two-dimensional ultrathin titanium dioxide nanosheets, the nano hollow glass beads and the composite nano ceramic beads in the solvent, and uniformly mixing to obtain synthetic slurry;
(5) Adding the aqueous nano SiO 2 aerogel suspension emulsion, the synthetic slurry, the film forming auxiliary agent and other auxiliary agents into the product obtained in the step (3), stirring at a low speed, dispersing uniformly to obtain the aqueous nano heat-preserving heat-insulating coating, and coating and drying to obtain the nano heat-preserving heat-insulating coating.
Preferably, in the step 1), the titanium salt is one of tetrabutyl titanate, isopropyl titanate, or tetraisopropyl titanate, or a combination thereof.
Preferably, in the step 1), the volume ratio of the mixed solvent glycol to the deionized water is 2-3: 1.
Preferably, in the step 3), the solvent is a combination of deionized water, ethanol or n-butanol, wherein the weight ratio is as follows: 10: 5-8: 2 to 5.
Preferably, in the step 3), the acrylic acid is one or a combination of methacrylic acid and methyl methacrylate.
Preferably, in the step 3), the flame retardant is one or a combination of magnesium hydroxide or aluminum hydroxide with low density.
Preferably, in the step 3), the auxiliary agent is one or a combination of an antifoaming agent, a leveling agent and a stabilizer.
Preferably, in the step 3), the near infrared reflecting material is one or a combination of indium tin oxide, sodium zinc phosphate and bismuth molybdate.
Compared with the prior art, the preparation method for preparing the anti-dazzle nano antimicrobial composite functional material and the coating has the following beneficial effects:
(1) The titanium dioxide nanoclusters are prepared by a hydrothermal method, and the high dispersibility enables the titanium dioxide nanosheets to have high dispersity, so that the titanium dioxide heat preservation and insulation effects can be improved; the two-dimensional double-layer ultrathin titanium dioxide nanosheets have larger specific surface area and more reaction sites.
(2) The titanium atoms in the two-dimensional double-layer ultrathin titanium dioxide nanosheets are easy to form a certain complex with water molecules in the air due to the electronic arrangement, and hydrogen atoms in the ligand water molecules are easy to attract oxygen, nitrogen and the like in the air through Van der Waals force, so that the material has better slow conductivity on heat by air or inert gas in more closed spaces, the material changes very slowly along with external temperature change, and finally the heat preservation effect is achieved; meanwhile, the heat-insulating material has the effect of reflecting various rays and the like generating heat, and achieves the effect that the temperature of an acting surface does not rise rapidly along with the radiation of a heat source, thereby achieving the heat-insulating effect.
(3) The potassium hexatitanate whisker is prepared by combining low-temperature heat treatment induced by a nanofiber template with a flowing oxygen auxiliary thermal evaporation method, and potassium hexatitanate nanocrystal is prepared by low-temperature heat treatment induced by the nanofiber template, and potassium carbonate and titanium dioxide have higher reactivity mainly under the induction of the nanofiber template, so that the treatment temperature is reduced; and then the potassium hexatitanate whisker is prepared by a flowing oxygen auxiliary thermal evaporation method, the potassium hexatitanate nanocrystals are converted into potassium hexatitanate whisker, the yield of the potassium hexatitanate whisker prepared under severe conditions is high, and compared with the potassium hexatitanate whisker synthesized by the traditional method, the potassium hexatitanate whisker has excellent high temperature resistance, so that the service life is prolonged.
Drawings
FIG. 1 is an SEM image of a titanium dioxide nanocluster according to an embodiment of the present invention
FIG. 2 is an SEM image of potassium dititanate whiskers according to an embodiment of the invention
FIG. 3 is a process flow diagram of a water-based nano heat-insulating coating according to a first, second and third embodiment of the invention
FIG. 4 is a graph showing the effect of the thickness of the first, second and third intermediate coatings on the heat insulating properties of the material according to the embodiment of the present invention
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
1) Preparation of controllable high-dispersion two-dimensional double-layer ultrathin titanium dioxide nanosheets
(1) Tetrabutyl titanate is dissolved in a mixed solvent of glycol and deionized water, and the volume ratio of the glycol to deionized water is 3:1, magnetically stirring for 15min until the solution is uniformly mixed, transferring to a reaction kettle, reacting for 20h at 220 ℃, cooling to room temperature, washing 3 times with deionized water and an organic solvent, and then placing in a vacuum drying oven for overnight drying at 120 ℃ to obtain dispersed titanium dioxide nanoclusters;
(2) Dispersing the titanium dioxide nanoclusters obtained in the step (1) in 100mL of buffer solution, and then adding dopamine hydrochloride into the buffer solution, wherein the mass ratio of the titanium dioxide nanoclusters to the dopamine hydrochloride is 4: and 1, magnetically stirring the suspension for 24 hours at room temperature, filtering, and calcining in a muffle furnace at the speed of 2 ℃/min for 4 hours at the temperature of 450 ℃ to finally obtain the controllable high-dispersion two-dimensional double-layer ultrathin titanium dioxide nanosheets.
2) Preparation of potassium hexatitanate whisker by nano-fiber template induced low-temperature heat treatment combined with flowing oxygen auxiliary thermal evaporation method
(1) Dissolving polyvinylidene fluoride in a mixed solvent of N, N-dimethylformamide and acetone, wherein the volume ratio of the N, N-dimethylformamide to the acetone is 1:1, a step of; heating the solution to 50 ℃ until the polyvinylidene fluoride is completely dissolved;
(2) Adding potassium carbonate and titanium dioxide into the solution, continuously stirring to form a uniform solution, and preparing PVDF/(potassium carbonate and titanium dioxide) nanofiber felt by adopting an electrostatic spinning method under the voltage of 10 KV; and the distance between the receiving plate and the spinning end is 10cm;
(3) Carrying out low-temperature treatment on PVDF/(potassium carbonate and titanium dioxide) nanofiber felt at 140 ℃ for 20 hours to obtain potassium hexatitanate crystal powder/PVDF nanofiber felt;
(4) In order to improve the formation of potassium hexatitanate whisker, pure O 2 is adopted as flowing atmosphere, the flow speed is 6L/min, a tube of aluminum oxide is heated to 600 ℃ in a muffle furnace, then the potassium hexatitanate crystal powder/PVDF nanofiber felt is placed in the tube of aluminum oxide to be sealed, the oxygen partial pressure is 50KPa, the tube is cooled to room temperature after being kept for 20min, and a potassium hexatitanate whisker sample is collected through a membrane filter placed between a vacuum tube and a vacuum pump.
3) Preparation of water-based nano heat-preservation heat-insulation coating
(1) Weighing the following raw materials in weight: 20 parts of solvent (the solvent is a combination of deionized water, ethanol or n-butanol, wherein the weight ratio is 10:8:5), 22 parts of methacrylic acid weather-resistant emulsion, 10 parts of near infrared reflecting material indium tin oxide, 10 parts of nano hollow glass beads, 10 parts of composite nano ceramic beads, 3.5 parts of SiO 2 aerogel, 3 parts of mica powder, 6 parts of potassium hexatitanate whisker, 10 parts of controllable high-dispersion two-dimensional ultrathin titanium dioxide nanosheets, 1 part of film forming auxiliary agent, 0.5 part of ultraviolet absorbent, 2 parts of flame retardant low-density magnesium hydroxide and 2 parts of defoaming agent;
(2) Placing methacrylic acid emulsion and SiO 2 aerogel into a sealed homogenizing emulsifying machine for stirring and mixing, so that the SiO 2 aerogel is fully dispersed, mixed and uniformly compounded in the emulsion to obtain aqueous nano SiO 2 aerogel suspension emulsion;
(3) Dispersing mica powder in a high-speed stirrer, and then placing the near infrared reflecting material indium tin oxide and low-density magnesium hydroxide into the high-speed stirrer for continuous stirring until the materials are uniformly mixed;
(4) Loading the controllable high-dispersion two-dimensional ultrathin titanium dioxide nanosheets, potassium hexatitanate whiskers and a solvent into a sealed homogenizing emulsifying machine for high-speed shearing and grinding to obtain premixed slurry, adding nano hollow glass beads and composite nano ceramic beads into the prepared premixed slurry, and continuously stirring and mixing to enable the controllable high-dispersion two-dimensional ultrathin titanium dioxide nanosheets, the nano hollow glass beads and the composite nano ceramic beads to be fully dispersed and uniformly mixed in the solvent, so as to obtain synthetic slurry;
(5) Adding the aqueous nano SiO 2 aerogel suspension emulsion, the synthetic slurry, the film forming auxiliary agent and the defoaming agent into the product obtained in the step (3), stirring at a low speed, dispersing uniformly to obtain the aqueous nano heat-preserving heat-insulating coating, and coating and drying to obtain the nano heat-preserving heat-insulating coating with the thickness of 1mm.
Example two
1) Preparation of controllable high-dispersion two-dimensional double-layer ultrathin titanium dioxide nanosheets
(1) Dissolving isopropyl titanate in a mixed solvent of glycol and deionized water, wherein the volume ratio of the glycol to deionized water is 2:1, magnetically stirring for 10min until the solution is uniformly mixed, transferring to a reaction kettle, reacting at 200 ℃ for 24h, cooling to room temperature, washing with deionized water and an organic solvent for 3 times, and then placing in a vacuum drying oven for drying at 100 ℃ overnight to obtain dispersed titanium dioxide nanoclusters;
(2) Dispersing the titanium dioxide nanoclusters obtained in the step (1) in 100mL of buffer solution, and then adding dopamine hydrochloride into the buffer solution, wherein the mass ratio of the titanium dioxide nanoclusters to the dopamine hydrochloride is 2: and 1, magnetically stirring the suspension for 24 hours at room temperature, filtering, calcining in a muffle furnace at 400 ℃ for 5 hours at a speed of 1 ℃/min, and finally obtaining the controllable high-dispersion two-dimensional double-layer ultrathin titanium dioxide nanosheets.
2) Preparation of potassium hexatitanate whisker by nano-fiber template induced low-temperature heat treatment combined with flowing oxygen auxiliary thermal evaporation method
(1) Dissolving polyvinylidene fluoride in a mixed solvent of N, N-dimethylformamide and acetone, wherein the volume ratio of the N, N-dimethylformamide to the acetone is 2:1, a step of; heating the solution to 55 ℃ until the polyvinylidene fluoride is completely dissolved;
(2) Adding potassium carbonate and titanium dioxide into the solution, continuously stirring to form a uniform solution, and preparing PVDF/(potassium carbonate and titanium dioxide) nanofiber felt by adopting an electrostatic spinning method under the voltage of 15 KV; the distance between the receiving plate and the spinning end is 15cm;
(3) Carrying out low-temperature treatment on PVDF/(potassium carbonate and titanium dioxide) nanofiber felt at 160 ℃ for 18h to obtain potassium hexatitanate crystal powder/PVDF nanofiber felt;
(4) In order to improve the formation of potassium hexatitanate whisker, pure O 2 is adopted as flowing atmosphere, the flow speed is 8L/min, a tube of aluminum oxide is heated to 650 ℃ in a muffle furnace, then the potassium hexatitanate crystal powder/PVDF nanofiber felt is placed in the tube of aluminum oxide to be sealed, the oxygen partial pressure is 55KPa, the tube is cooled to room temperature after being kept for 20min, and a potassium hexatitanate whisker sample is collected through a membrane filter placed between a vacuum tube and a vacuum pump.
3) Preparation of water-based nano heat-preservation heat-insulation coating
(1) Weighing the following raw materials in weight: 20 parts of solvent (the solvent is the combination of deionized water, ethanol or n-butanol, wherein the weight ratio is 10:8:3), 22 parts of methyl methacrylate weather-resistant emulsion, 10 parts of near infrared reflecting material zinc sodium phosphate, 10 parts of nanoscale hollow glass beads, 10 parts of composite nano ceramic beads, 3.5 parts of SiO 2 aerogel, 3 parts of mica powder, 6 parts of potassium hexatitanate whisker, 10 parts of controllable high-dispersion two-dimensional ultrathin titanium dioxide nano sheet, 1 part of film forming auxiliary agent, 0.5 part of ultraviolet absorbent, 2 parts of flame retardant low-density aluminum hydroxide and 2 parts of advection agent;
(2) Placing the methyl methacrylate emulsion and the SiO 2 aerogel into a sealed homogenizing emulsifying machine for stirring and mixing, so that the SiO 2 aerogel is fully dispersed, mixed and uniformly compounded in the emulsion to obtain a water-based nano SiO 2 aerogel suspension emulsion;
(3) Dispersing mica powder in a high-speed stirrer, and then placing near infrared reflecting material zinc sodium phosphate and fire retardant low-density aluminum hydroxide into the high-speed stirrer for continuous stirring until the materials are uniformly mixed;
(4) Loading the controllable high-dispersion two-dimensional ultrathin titanium dioxide nanosheets, potassium hexatitanate whiskers and a solvent into a sealed homogenizing emulsifying machine for high-speed shearing and grinding to obtain premixed slurry, adding nano hollow glass beads and composite nano ceramic beads into the prepared premixed slurry, and continuously stirring and mixing to enable the controllable high-dispersion two-dimensional ultrathin titanium dioxide nanosheets, the nano hollow glass beads and the composite nano ceramic beads to be fully dispersed and uniformly mixed in the solvent, so as to obtain synthetic slurry;
(5) Adding the aqueous nano SiO 2 aerogel suspension emulsion, the synthetic slurry, the film forming auxiliary agent and the defoaming agent into the product obtained in the step (3), stirring at a low speed, dispersing uniformly to obtain the aqueous nano heat-preserving heat-insulating coating, and coating and drying to obtain the nano heat-preserving heat-insulating coating with the thickness of 2mm.
Example III
1) Preparation of controllable high-dispersion two-dimensional double-layer ultrathin titanium dioxide nanosheets
(1) Dissolving isopropyl titanate in a mixed solvent of glycol and deionized water, wherein the volume ratio of the glycol to deionized water is 2:1, magnetically stirring for 10min until the solution is uniformly mixed, transferring to a reaction kettle, reacting for 20h at 240 ℃, cooling to room temperature, washing with deionized water and an organic solvent for 5 times, and then placing in a vacuum drying oven for overnight drying at 120 ℃ to obtain dispersed titanium dioxide nanoclusters;
(2) Dispersing the titanium dioxide nanoclusters obtained in the step (1) in 150mL of buffer solution, and then adding dopamine hydrochloride into the buffer solution, wherein the mass ratio of the titanium dioxide nanoclusters to the dopamine hydrochloride is 5: and 1, magnetically stirring the suspension for 30 hours at room temperature, filtering, and calcining in a muffle furnace at the speed of 2 ℃/min for 3 hours at the temperature of 500 ℃ to finally obtain the controllable high-dispersion two-dimensional double-layer ultrathin titanium dioxide nanosheets.
2) Preparation of potassium hexatitanate whisker by nano-fiber template induced low-temperature heat treatment combined with flowing oxygen auxiliary thermal evaporation method
(1) Dissolving polyvinylidene fluoride in a mixed solvent of N, N-dimethylformamide and acetone, wherein the volume ratio of the N, N-dimethylformamide to the acetone is 3:1, heating the solution to 55 ℃ until polyvinylidene fluoride is completely dissolved;
(2) Adding potassium carbonate and titanium dioxide into the solution, continuously stirring to form a uniform solution, and preparing PVDF/(potassium carbonate and titanium dioxide) nanofiber felt by adopting an electrostatic spinning method under the voltage of 10 KV; the distance between the receiving plate and the spinning end is 15cm;
(3) Carrying out heat treatment on PVDF/(potassium carbonate and titanium dioxide) nanofiber felt at 180 ℃ for 12 hours through low-temperature treatment to obtain potassium hexatitanate crystal powder/PVDF nanofiber felt;
(4) In order to improve the formation of potassium hexatitanate whisker, pure O 2 is adopted as flowing atmosphere, the flow speed is 8L/min, a tube of aluminum oxide is heated to 750 ℃ in a muffle furnace, then the potassium hexatitanate crystal powder/PVDF nanofiber felt is placed in the tube of aluminum oxide to be sealed, the oxygen partial pressure is 60KPa, the tube is cooled to room temperature after being kept for 30min, and a potassium hexatitanate whisker sample is collected through a membrane filter placed between a vacuum tube and a vacuum pump.
3) Preparation of water-based nano heat-preservation heat-insulation coating
(1) Weighing the following raw materials in weight: 20 parts of solvent (the solvent is a combination of deionized water, ethanol or n-butanol, wherein the weight ratio is 10:5:5), 22 parts of methyl methacrylate weather-resistant emulsion, 10 parts of near infrared reflecting material bismuth molybdate, 10 parts of nano hollow glass beads, 10 parts of composite nano ceramic beads, 3.5 parts of SiO 2 aerogel, 3 parts of mica powder, 6 parts of potassium hexatitanate whisker, 10 parts of controllable high-dispersion two-dimensional ultrathin titanium dioxide nano sheet, 1 part of film forming auxiliary agent, 0.5 part of ultraviolet absorbent, 2 parts of flame retardant low-density magnesium hydroxide and 2 parts of stabilizer;
(2) Placing the methyl methacrylate emulsion and the SiO 2 aerogel into a sealed homogenizing emulsifying machine for stirring and mixing, so that the SiO 2 aerogel is fully dispersed, mixed and uniformly compounded in the emulsion to obtain a water-based nano SiO 2 aerogel suspension emulsion;
(3) Dispersing mica powder in a high-speed stirrer, and then placing near infrared reflecting material bismuth molybdate and flame retardant low-density magnesium hydroxide into the high-speed stirrer for continuous stirring until the materials are uniformly mixed;
(4) Loading the controllable high-dispersion two-dimensional ultrathin titanium dioxide nanosheets, potassium hexatitanate whiskers and a solvent into a sealed homogenizing emulsifying machine for high-speed shearing and grinding to obtain premixed slurry, adding nano hollow glass beads and composite nano ceramic beads into the prepared premixed slurry, and continuously stirring and mixing to enable the controllable high-dispersion two-dimensional ultrathin titanium dioxide nanosheets, the nano hollow glass beads and the composite nano ceramic beads to be fully dispersed and uniformly mixed in the solvent, so as to obtain synthetic slurry;
(5) Adding the aqueous nano SiO 2 aerogel suspension emulsion, the synthetic slurry, the film forming auxiliary agent and the defoaming agent into the product obtained in the step (3), stirring at a low speed, dispersing uniformly to obtain the aqueous nano heat-preserving heat-insulating coating, and coating and drying to obtain the nano heat-preserving heat-insulating coating with the thickness of 3mm.
As can be seen from fig. 4, the thickness of the coating layer is increased, the heat insulation performance is increased, but after a certain thickness is reached, the heat insulation performance is not increased or even slightly reduced, and the thickness is increased, so that the heat insulation performance is increased, probably because the thickness is increased, the electromagnetic waves which can penetrate through are fewer. When the thickness is reached, the light wave is difficult to penetrate, and the heat insulation performance of the light wave cannot be increased any more when the thickness is increased.
Table 1 Performance index of the aqueous nano thermal insulation coating of examples one, two and three
Claims (7)
1. The preparation method of the water-based nanometer heat preservation and heat insulation coating is characterized by comprising the following specific steps:
1) Preparation of controllable high-dispersion two-dimensional double-layer ultrathin titanium dioxide nanosheets
(1) Dissolving titanium salt in a mixed solvent of ethylene glycol and deionized water, magnetically stirring for 10-20 min until the solution is uniformly mixed, transferring into a reaction kettle, reacting for 20-24 h at 200-240 ℃, cooling to room temperature, washing with deionized water and an organic solvent for 3-5 times, and then placing in a vacuum drying oven for drying at 100-120 ℃ overnight to obtain dispersed titanium dioxide nanoclusters;
(2) Dispersing the titanium dioxide nanoclusters obtained in the step (1) in 100-150 mL of buffer solution, and then adding dopamine hydrochloride into the buffer solution, wherein the mass ratio of the titanium dioxide nanoclusters to the dopamine hydrochloride is (2-5): 1, magnetically stirring the suspension for 24-30 hours at room temperature, filtering, calcining in a muffle furnace at a speed of 1-2 ℃ per minute at 400-500 ℃ for 3-5 hours, and finally obtaining the controllable high-dispersion two-dimensional ultrathin titanium dioxide nanosheets;
2) Preparation of potassium hexatitanate whisker by nano-fiber template induced low-temperature heat treatment combined with flowing oxygen auxiliary thermal evaporation method
(1) Dissolving polyvinylidene fluoride in a mixed solvent of N, N-dimethylformamide and acetone, wherein the volume ratio of the N, N-dimethylformamide to the acetone is 1-3: 1, a step of; heating the solution to 50-55 ℃ until the polyvinylidene fluoride is completely dissolved;
(2) Adding potassium carbonate and titanium dioxide into the solution, continuously stirring to form a uniform solution, and preparing PVDF/(potassium carbonate and titanium dioxide) nanofiber felt by adopting an electrostatic spinning method under the voltage of 10-15 KV; the distance between the receiving plate and the spinning end is 10-15 cm;
(3) Carrying out low-temperature treatment on PVDF/(potassium carbonate and titanium dioxide) nanofiber felt at 140-180 ℃ for heat treatment
12-24 Hours to obtain potassium hexatitanate crystal powder/PVDF nanofiber felt;
(4) In order to improve the formation of potassium hexatitanate whisker, pure O2 is adopted as flowing atmosphere, the flow speed is 6-8L/min, a tube of aluminum oxide is heated to 600-750 ℃ in a muffle furnace, then potassium hexatitanate crystal powder/PVDF nanofiber felt is placed in the tube of aluminum oxide to be sealed, the oxygen partial pressure is 50-60 KPa, the tube is cooled to room temperature after being kept for 20-30 min, and a potassium hexatitanate whisker sample is collected through a membrane filter placed between a vacuum tube and a vacuum pump;
3) Preparation of water-based nano heat-preservation heat-insulation coating
(1) Weighing the following raw materials in weight: 20 parts of solvent, 22 parts of acrylic weather-resistant emulsion, 10 parts of near infrared reflecting material, 10 parts of nano hollow glass beads, 10 parts of composite nano ceramic beads, 3.5 parts of SiO2 aerogel, 3 parts of mica powder, 6 parts of potassium hexatitanate whisker, 10 parts of controllable high-dispersion two-dimensional ultrathin titanium dioxide nanosheets, 1 part of film forming auxiliary agent, 0.5 part of ultraviolet absorber, 2 parts of flame retardant and 2 parts of other auxiliary agents;
(2) Placing the acrylic emulsion and the SiO2 aerogel into a sealed homogenizing emulsifying machine for stirring and mixing, so that the SiO2 aerogel is fully dispersed, mixed and uniformly compounded in the emulsion to obtain a water-based nano SiO2 aerogel suspension emulsion;
(3) Dispersing mica powder in a high-speed stirrer, and then placing the near infrared reflecting material into the high-speed stirrer to continuously stir until the mica powder is uniformly mixed;
(4) Loading the controllable high-dispersion two-dimensional ultrathin titanium dioxide nanosheets, potassium hexatitanate whiskers and a solvent into a sealed homogenizing emulsifying machine for high-speed shearing and grinding to obtain premixed slurry, adding nano hollow glass beads and composite nano ceramic beads into the prepared premixed slurry, and continuously stirring and mixing to fully disperse the controllable high-dispersion two-dimensional ultrathin titanium dioxide nanosheets, the nano hollow glass beads and the composite nano ceramic beads in the solvent, and uniformly mixing to obtain synthetic slurry;
(5) Adding the aqueous nano SiO2 aerogel suspension emulsion, the synthetic slurry, the film forming auxiliary agent and other auxiliary agents into the product obtained in the step (3), stirring at a low speed, dispersing uniformly to obtain the aqueous nano heat-preserving heat-insulating coating, and coating and drying to obtain the nano heat-preserving heat-insulating coating.
2. The method for preparing the water-based nano heat-insulating coating according to claim 1, wherein the titanium salt is one or a combination of tetrabutyl titanate, isopropyl titanate and tetraisopropyl titanate.
3. The preparation method of the water-based nanometer heat preservation and heat insulation coating according to claim 1, which is characterized in that the volume ratio of the mixed solvent glycol to deionized water is 2-3: 1.
4. The method for preparing the water-based nano heat-preserving and heat-insulating coating according to claim 1, wherein the solvent is a combination of deionized water, ethanol and n-butanol, and the weight ratio is as follows: 10: 5-8: 2-5.
5. The method for preparing the water-based nano heat-preserving and heat-insulating coating according to claim 1, wherein the flame retardant is one or a combination of low-density magnesium hydroxide and aluminum hydroxide flame retardants.
6. The method for preparing the aqueous nano heat-preserving and heat-insulating coating according to claim 1, wherein the film-forming auxiliary agent is one or a combination of a defoaming agent, a leveling agent and a stabilizing agent.
7. The method for preparing the water-based nano heat-preserving and heat-insulating coating according to claim 1, wherein the near infrared reflecting material is one or a combination of indium tin oxide, sodium zinc phosphate and bismuth molybdate.
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| CN109160777A (en) * | 2018-10-22 | 2019-01-08 | 泉州臻美智能科技有限公司 | A kind of fiber-reinforced composite heat-barrier material and preparation method thereof |
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