CN115260858B - Reflective heat-insulating coating, reflective heat-insulating film, preparation method of reflective heat-insulating film and heat-insulating product - Google Patents

Reflective heat-insulating coating, reflective heat-insulating film, preparation method of reflective heat-insulating film and heat-insulating product Download PDF

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CN115260858B
CN115260858B CN202210829695.9A CN202210829695A CN115260858B CN 115260858 B CN115260858 B CN 115260858B CN 202210829695 A CN202210829695 A CN 202210829695A CN 115260858 B CN115260858 B CN 115260858B
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parts
reflective
titanium dioxide
reflective insulation
insulation coating
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CN115260858A (en
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张心亚
卢一鸣
何燚鹏
杨帅
谭振华
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CARPOLY CHEMICAL GROUP CO LTD
South China University of Technology SCUT
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CARPOLY CHEMICAL GROUP CO LTD
South China University of Technology SCUT
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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
    • C09D133/04—Homopolymers or copolymers of esters
    • C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
    • C09D133/062—Copolymers with monomers not covered by C09D133/06
    • C09D133/064—Copolymers with monomers not covered by C09D133/06 containing anhydride, COOH or COOM groups, with M being metal or onium-cation
    • 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
    • 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
    • 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
    • C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
    • 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
    • C08K2201/00—Specific properties of additives
    • C08K2201/002—Physical properties
    • C08K2201/005—Additives being defined by their particle size in general

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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)

Abstract

The application discloses a reflective heat-insulating coating, a reflective heat-insulating film, a preparation method thereof and a heat-insulating product. The reflective heat-insulating coating comprises the following components: 65 to 75 parts of polymer emulsion, 1 to 20 parts of modified potassium titanate whisker, 5.0 to 8.0 parts of film forming auxiliary agent, 0.01 to 0.03 part of defoamer and 0.01 to 0.05 part of flatting agent; the components in the polymer emulsion include a complex of methyl methacrylate-butyl acrylate-methacrylic acid copolymer and hollow titanium dioxide particles. The reflective heat-insulating coating not only has excellent light reflectivity and low heat conductivity coefficient, but also has excellent hardness, wear resistance and high weather resistance.

Description

Reflective heat-insulating coating, reflective heat-insulating film, preparation method of reflective heat-insulating film and heat-insulating product
Technical Field
The application belongs to the field of functional materials, and particularly relates to a reflective heat-insulating coating, a reflective heat-insulating film, a preparation method of the reflective heat-insulating film and a heat-insulating product.
Background
Building energy consumption has an important proportion in various energy consumption types, and especially the energy consumption proportion of daily heating and refrigeration has a trend of rising year by year. The energy waste of daily heating or refrigeration can indirectly cause environmental pollution, for example, fluorine-containing refrigerant in a refrigeration air conditioner can destroy an ozone layer, so that excessive ultraviolet radiation reaches the ground, and the effects of abnormal earth climate, influence on animal and plant growth, ecological balance destruction and the like are caused; the pollution particles containing sulfur and nitrogen generated by heating equipment in winter cause serious air pollution, and meanwhile, the electric energy used by the refrigerating equipment and the heating equipment is mainly generated by burning chemical energy and thermal power generation, and a large amount of greenhouse gases can be generated in the process, so that the global greenhouse effect aggravates climate warming and forms vicious circle.
Therefore, the improvement of the heat insulation property of the building in winter and summer is of great significance. In the traditional technology, a heat-insulating coating is often arranged on a building or a product to reduce the heat exchange efficiency of the environments at two sides of the heat-insulating coating, so that the heat-insulating and heat-preserving effects are achieved, but the traditional heat-insulating coating still has difficulty in meeting the higher heat-preserving and heat-insulating requirements of people on the building.
Thus, the prior art is still to be developed.
Disclosure of Invention
Based on the above, the application provides a reflective heat-insulating coating, a reflective heat-insulating film, a preparation method thereof and a heat-insulating product, wherein the reflective heat-insulating coating has high reflectivity, low conductivity, excellent mechanical property and weather resistance.
The technical scheme of the application is as follows.
In one aspect, the application provides a reflective heat-insulating coating, which comprises the following components in parts by weight: 65 to 75 parts of polymer emulsion, 1 to 20 parts of modified potassium titanate whisker, 5.0 to 8.0 parts of film forming auxiliary agent, 0.01 to 0.03 part of defoamer and 0.01 to 0.05 part of flatting agent;
the components in the polymer emulsion include a complex of methyl methacrylate-butyl acrylate-methacrylic acid copolymer and hollow titanium dioxide particles.
In some embodiments, the polymer emulsion is 65-72 parts by weight and the modified potassium titanate whisker is 5-15 parts by weight.
In some of these embodiments, the complex of the methyl methacrylate-butyl acrylate-methacrylic acid copolymer and the hollow titanium dioxide particles has a core-shell structure with the hollow titanium dioxide particles as a core and the methyl methacrylate-butyl acrylate-methacrylic acid copolymer as a shell; and/or
In the composite, the mass of the hollow titanium dioxide particles is 0.5-5% of the mass of the methyl methacrylate-butyl acrylate-methacrylic acid copolymer.
In some embodiments, the methyl methacrylate-butyl acrylate-methacrylic acid copolymer has a mass ratio of methyl methacrylate structural units, butyl acrylate structural units, and methacrylic acid structural units of (40-50): 1-10; and/or
The solid content of the polymer emulsion is 30% -40%.
In some embodiments, the modified potassium titanate whisker is a silane coupling agent modified potassium titanate whisker; and/or
The particle size of the hollow titanium dioxide particles is 10 nm-500 nm.
In some embodiments, the reflective insulation coating further comprises 0.03 to 0.05 parts by weight of a pH adjuster; and/or
The pH value of the reflective heat insulation coating is 7-8.
In another aspect of the present application, there is also provided a method for preparing the reflective insulation coating, comprising the steps of:
and mixing the polymer emulsion, the modified potassium titanate whisker, the film-forming auxiliary agent, the defoaming agent and the leveling agent to obtain the reflective heat-insulating coating.
In some of these embodiments, the step of preparing the polymer emulsion comprises the steps of:
mixing hollow titanium dioxide particles, methyl methacrylate, butyl acrylate, methacrylic acid and an oily solvent to obtain a mixed solution;
and then mixing the mixed solution with an initiator, and carrying out polymerization reaction to obtain the polymer emulsion.
In some of these embodiments, the preparation step of the modified potassium titanate whisker comprises the steps of:
mixing a silane coupling agent with absolute ethyl alcohol and hydrolyzing to obtain a solution B;
mixing potassium titanate whisker, a dispersing agent and ethanol to obtain a solution C;
and mixing, activating and drying the solution B and the solution C to obtain the modified potassium titanate whisker.
In some of these embodiments, the mass of the silane coupling agent is 1% to 5% of the mass of the potassium titanate whisker; and/or
The silane coupling agent comprises one or more of KH-550, KH-560, 3- (methacryloyloxy) propyl trimethyl silane and hexadecyl trimethyl silane.
In some of these embodiments, the method of preparing hollow titanium dioxide comprises the steps of:
mixing the polymer microsphere, the titanium dioxide precursor and the solvent, and then hydrolyzing, aging and calcining to obtain the hollow titanium dioxide.
In some of these embodiments, the components of the polymeric microspheres include styrene-methyl methacrylate copolymers; and/or
The mass ratio of the titanium dioxide precursor to the polymer microsphere is (3.5-7) 1; and/or
The calcining temperature is 500-800 ℃ and the calcining time is 0.5-3 h; and/or
The aging time is 12-24 hours.
In yet another aspect of the present application, there is provided a reflective insulation film prepared using the reflective insulation coating as described above.
In yet another aspect of the present application, there is also provided a reflective insulation article comprising a reflective insulation film as described above.
The components of the reflective heat-insulating coating comprise polymer emulsion, modified potassium titanate whisker, film forming auxiliary agent, defoaming agent and leveling agent in a specific proportion, wherein the components in the polymer emulsion comprise a compound of methyl methacrylate-butyl acrylate-methacrylic acid copolymer and hollow titanium dioxide particles, the titanium dioxide particles have higher refractive index, and the hollow structure is filled with air, so that the heat conductivity of the compound can be further reduced, the compound compounded with the methyl methacrylate-butyl acrylate-methacrylic acid copolymer has good light reflection and heat insulation performance, and meanwhile, the modified potassium titanate whisker has a unique tunnel structure and has the characteristics of high strength, high hardness, high modulus, high wear resistance, low heat conductivity, high infrared reflectivity, high heat resistance and the like.
The reflective heat-insulating coating has higher solar reflectance and near infrared reflectance, and the prepared reflective heat-insulating film can reflect part of sunlight or heat reaching the surface, so that the heat absorbed by a building is reduced, the heat-insulating effect is achieved, the low heat conductivity coefficient can block and reduce the heat conduction speed, the heat-insulating effect is achieved, outdoor heat is prevented from being transferred to the indoor in summer, indoor heat is prevented from being transferred to the outdoor in winter, and the reflective heat-insulating coating has excellent hardness, wear resistance and high weather resistance, and the service life of the reflective heat-insulating product can be prolonged.
Drawings
FIG. 1 shows a nano hollow TiO according to an embodiment of the present application 2 TEM image of core-shell structure of the/P (MMA/BA/MAA) complex;
fig. 2 is a graph showing the light reflection of the reflective insulation films prepared in the examples and comparative examples of the present application.
Detailed Description
The present application will be described more fully hereinafter in order to facilitate an understanding of the present application, and preferred embodiments of the present application are set forth. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The application provides a reflective heat-insulating coating, which comprises the following components in parts by weight: 65 to 75 parts of polymer emulsion, 1 to 20 parts of modified potassium titanate whisker, 5.0 to 8.0 parts of film forming auxiliary agent, 0.01 to 0.03 part of defoamer and 0.1 to 0.5 part of flatting agent;
the components in the polymer emulsion comprise a composite of methyl methacrylate-butyl acrylate-methacrylic acid copolymer and hollow titanium dioxide particles.
The components of the reflective heat-insulating coating comprise polymer emulsion, modified potassium titanate whisker, film forming auxiliary agent, defoaming agent and leveling agent in a specific proportion, wherein the components in the polymer emulsion comprise a compound of methyl methacrylate-butyl acrylate-methacrylic acid copolymer and hollow titanium dioxide particles, the titanium dioxide particles have higher refractive index, and the hollow structure is filled with air, so that the heat conductivity of the compound can be further reduced, the compound compounded by the methyl methacrylate-butyl acrylate-methacrylic acid copolymer has good light reflection and heat insulation performance, meanwhile, the modified potassium titanate whisker has a unique tunnel structure, and all components are matched, so that the reflective heat-insulating coating prepared by the method not only has excellent light reflectivity, low heat conductivity, but also has excellent hardness, wear resistance and high weather resistance.
The hollow titanium dioxide particles mean that the titanium dioxide particles have a hollow structure.
In some embodiments, the polymer emulsion is 65-72 parts by weight and the modified potassium titanate whisker is 5-15 parts by weight.
The reflective heat insulation performance and the mechanical property of the reflective heat insulation coating are further improved by regulating and controlling the proportion of each component.
It is noted that when a range of values is disclosed herein, the range is considered to be continuous and includes the minimum and maximum values of the range, as well as each value between such minimum and maximum values. For example, "65 parts to 75 parts" includes but is not limited to: 65 parts, 65.5 parts, 66 parts, 67 parts, 68 parts, 69 parts, 70 parts, 71 parts, 72 parts, 73 parts, 74 parts, 75 parts; "1 part to 20 parts" includes but is not limited to: 1 part, 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, 20 parts; "5.0 parts to 8.0 parts" includes but is not limited to: 5 parts, 6 parts, 7 parts, 8 parts; "0.01 parts to 0.03 parts" includes but is not limited to: 0.01 part, 0.02 part, 0.03 part.
In some of these embodiments, the composite of the above methyl methacrylate-butyl acrylate-methacrylic acid copolymer and the hollow titanium dioxide particles has a core-shell structure with the hollow titanium dioxide particles as the core and the methyl methacrylate-butyl acrylate-methacrylic acid copolymer as the shell.
The methyl methacrylate-butyl acrylate-methacrylic acid copolymer is coated on the surface of the hollow titanium dioxide particles to form a uniformly coated compound so as to better play a synergistic effect.
In some of these embodiments, the mass of the hollow titanium dioxide particles in the above composite is 0.5% to 5% of the mass of the methyl methacrylate-butyl acrylate-methacrylic acid copolymer.
The mass ratio of the hollow titanium dioxide particles to the methyl methacrylate-butyl acrylate-methacrylic acid copolymer is regulated, so that the synergistic effect of the hollow titanium dioxide particles and the methyl methacrylate-butyl acrylate-methacrylic acid copolymer is further improved.
In some embodiments, the methyl methacrylate-butyl acrylate-methacrylic acid copolymer has a mass ratio of methyl methacrylate structural units, butyl acrylate structural units, and methacrylic acid structural units of (40-50): 1-10.
Specifically, the mass ratio of each structural unit can be achieved by controlling the mass ratio of the corresponding monomer of each structural unit.
The mechanical property and the heat resistance of the reflective heat-insulating coating after film formation are further improved while the excellent reflective heat-insulating performance of the reflective heat-insulating coating is maintained by regulating the mass ratio of the monomer raw materials of the methyl methacrylate-butyl acrylate-methacrylic acid copolymer.
In some embodiments, the solids content of the polymer emulsion is 30% to 40%.
In some of these embodiments, the components of the polymer emulsion described above further comprise an oily solvent; further, the oily solvent comprises one or more of butanol, hexadecyl, trichloroethylene, trichloromethane and isopropylbenzene.
In some of these embodiments, the hollow titanium dioxide particles are nano-hollow titanium dioxide particles.
In some of these embodiments, the hollow titanium dioxide particles have a particle size of 10nm to 500nm.
In some embodiments, the modified potassium titanate whisker is a silane coupling agent modified potassium titanate whisker.
The structure of the potassium titanate whisker modified by the silane coupling agent is more stable.
In some of these embodiments, the reflective insulation coating has a pH of 7 to 8.
The stability of the reflective heat-insulating coating can be further improved by regulating and controlling the pH value of the reflective heat-insulating coating.
In some embodiments, the reflective insulation coating further comprises 0.03 parts to 0.05 parts by weight of a pH adjustor.
The pH adjuster may be an acid, a base, or a salt with pH buffering effect, including but not limited to: citric acid, potassium citrate, lactic acid, tartaric acid, malic acid, sodium citrate, potassium citrate, hydrochloric acid, sodium hydroxide, potassium hydroxide and various pH buffers. The specific type and the dosage are regulated according to the pH value of the actual reflective heat-insulating coating.
Film forming aids, defoamers and leveling agents commonly used in the art may be employed.
In a specific example, the coalescent is a dodecanol ester. The dodecanol ester is environment-friendly and nontoxic, and the obtained reflective heat-insulating coating is environment-friendly.
The defoaming agent may be at least one of mineral oil defoaming agent, alcohol defoaming agent, fatty acid ester defoaming agent, amide defoaming agent, phosphate defoaming agent, silicone defoaming agent, polyether modified defoaming agent and polysiloxane defoaming agent.
The leveling agent may be an organosilicon leveling agent or an acrylate type. Specific examples include, but are not limited to: silicone oil, polydimethylsiloxane, polyether polyester modified organosiloxane, alkyl modified organosiloxane, acrylic resin, urea-formaldehyde resin and melamine formaldehyde resin.
In some of these embodiments, the reflective insulation coating further comprises solvent water. Further, the mass portion of water is 10-30.
The application also provides a preparation method of the reflective heat insulation coating, which comprises the following step S10.
And step S10, mixing the polymer emulsion, the modified potassium titanate whisker, the film forming auxiliary agent, the defoaming agent and the leveling agent to obtain the reflective heat-insulating coating.
In a specific example, in step S10, the uniform and stable reflective insulation coating is obtained by stirring and mixing for 0.5h in the mixing step.
In some of these embodiments, the step of preparing the polymer emulsion includes the following steps S100-S200.
Step S100, mixing hollow titanium dioxide particles, methyl methacrylate, butyl acrylate, methacrylic acid and an oily solvent to obtain a mixed solution.
In some of these embodiments, the mass ratio of methyl methacrylate, butyl acrylate, and methacrylic acid is (40-50): 1-10.
In some of these embodiments, the mass ratio of the total mass of methyl methacrylate, butyl acrylate, and methacrylic acid to the hollow titanium dioxide particles is 100: (0.5-5).
In some embodiments, the oily solvent is selected from one or more of butanol, hexadecane, trichloroethylene, trichloromethane, cumene.
In some of these embodiments, the step of mixing in step S100 employs stirring and simultaneous action of the cell disruptor to disperse the monomers uniformly in the system to form stable, fine emulsion droplets; further, the mixing time is 0.5 h-1.5 h.
And step 200, mixing the mixed solution with an initiator, and performing polymerization reaction to obtain a polymer emulsion.
In some of these embodiments, the initiator is selected from one or more of APS, AIBN, KPS.
In some of these embodiments, the mass of the initiator is 10% to 20% of the mass of the methyl methacrylate.
In some of these embodiments, the polymerization reaction is carried out at a temperature of 70℃to 85℃for a period of 3 hours to 5 hours.
The hollow titanium dioxide particles are uniformly dispersed in the monomer through miniemulsion polymerization reaction, so that a core-shell structure taking the hollow titanium dioxide particles as a core and methyl methacrylate-butyl acrylate-methacrylic acid copolymer as a shell is formed.
In some of these embodiments, the step of preparing hollow titanium dioxide particles includes the following steps S300 to S400.
And step S300, mixing the polymer microsphere, the titanium dioxide precursor and the solvent, and then hydrolyzing, aging and calcining to obtain the hollow titanium dioxide.
The titanium dioxide precursor is hydrolyzed and uniformly coated on the polymer microsphere, and then the polymer microsphere is decomposed by calcination, so that the hollow titanium dioxide with a hollow structure is obtained.
In some embodiments, the polymeric microspheres are made of polystyrene-methyl methacrylate copolymer.
In some of these embodiments, the mass ratio of the titanium dioxide precursor to the polymeric microspheres is (3.5-7): 1.
In some embodiments thereof, step S300 includes the following steps S310-S320.
Step S310, mixing polystyrene-methyl methacrylate copolymer microspheres, a titanium dioxide precursor and an alcohol solvent, and then dropwise adding an acidic solution for hydrolysis to obtain a first mixed solution.
Thus, the titanium dioxide precursor is hydrolyzed and uniformly coated on the surface of the polystyrene-methyl methacrylate copolymer microsphere.
In some of these embodiments, the alcohol solvent is selected from monohydric alcohols having 1 to 4 carbon atoms, including but not limited to: one or more of methanol, ethanol and propanol.
In some of these embodiments, the acidic solution has a pH of 2 to 4.
In some of these embodiments, the acidic solution includes water, an alcohol solvent, and an acid. Further, the acid includes at least one of an inorganic acid and an organic acid.
In some of these embodiments, the acid is an organic acid, specific examples of which include, but are not limited to, acetic acid.
In some of these embodiments, the alcohol solvent is selected from monohydric alcohols having 1 to 4 carbon atoms, including but not limited to: one or more of methanol, ethanol and propanol.
In some of these embodiments, in step S310, the process is performed under stirring.
And step S320, standing, ageing, drying and calcining the first mixed solution to obtain the hollow nano titanium dioxide.
In some of these embodiments, the time for standing and aging is from 12 hours to 24 hours.
The drying is to remove the solvent to obtain the solid precursor compound.
In some of these embodiments, the calcination is carried out at a temperature of 900 to 1200 ℃ for a time of 0.5 to 3 hours.
In some embodiments, the mass concentration of the titanium dioxide precursor in the mixed solution of the polystyrene-methyl methacrylate copolymer microsphere, the titanium dioxide precursor and the alcohol solvent is 0.05 g/mL-1 g/mL.
In some of these embodiments, the titanium dioxide precursor is an alkyl titanate. The alkyl titanate has the general formula Ti (OR) 4 Wherein R is an alkyl group having 1 to 8 carbon atoms, and specific examples include, but are not limited to: at least one of tetrabutyl acid, tetraethyl titanate and tetrapropyl titanate.
In some of these embodiments, the step of preparing polystyrene-methyl methacrylate co-microspheres comprises the steps of:
and mixing styrene, methyl methacrylate and deionized water, then dripping an initiator, carrying out polymerization reaction, and drying to obtain the polystyrene microsphere.
In some of these embodiments, the polymerization reaction is carried out at a temperature of 70℃to 85℃for a period of 3 hours to 5 hours.
In some embodiments, the concentration of styrene in the mixture of styrene, methyl methacrylate and deionized water is from 0.05g/Ml to 0.5g/Ml.
In some of these embodiments, the mass of methyl methacrylate is 5% to 15% of the mass of styrene.
In some of these embodiments, the initiator comprises one or more of APS, AIBN, KPS, the initiator being 10% to 20% of the methyl methacrylate mass.
In some of these embodiments, the preparation steps of the modified potassium titanate whisker include the following steps S400 to S600.
Step S400, mixing a silane coupling agent with absolute ethyl alcohol and hydrolyzing to obtain a solution B.
In some of these embodiments, the hydrolysis is performed under acidic conditions.
In some of these embodiments, the above steps of mixing and hydrolyzing are performed under magnetic stirring.
In some of these embodiments, the silane coupling agent includes one or more of KH-550, KH-560, 3- (methacryloyloxy) propyl trimethylsilane, hexadecyltrimethylsilane.
In some of these embodiments, the concentration of the silane coupling agent is 0.1wt% to 1wt% based on the total mass of the silane coupling agent and the absolute ethanol.
And S500, mixing the potassium titanate whisker, the dispersing agent and ethanol to obtain a solution C.
In some of these embodiments, the dispersant comprises one or more of ethylene bis stearamide, glyceryl monostearate, glyceryl tristearate, and oleamide.
In some of these embodiments, the concentration of potassium titanate whiskers in solution C is 5wt% to 20wt% and the concentration of dispersant is 0.5wt% to 2wt%.
It should be noted that, steps S400 and S500 may be performed sequentially or simultaneously without a specific sequence.
In some of these embodiments, the mass of the silane coupling agent is 1% to 5% of the mass of the potassium titanate whisker.
And S600, mixing, activating and drying the solution B and the solution C to obtain the modified potassium titanate whisker.
In some of these embodiments, the preparation steps of the potassium titanate whisker include the steps of:
TiO is mixed with 2 And K 2 CO 3 Wet mixing, ball milling, drying and calcining to obtain the potassium titanate whisker.
In some of these embodiments, the step of calcining is performed under the influence of a sintering aid.
In some of these embodiments, the calcination is carried out at a temperature of 900 to 1200 ℃ for a time of 0.5 to 3 hours.
In some of these embodiments, the TiO 2 And K 2 CO 3 The molar ratio of (2) is 1:4-1:8.
An embodiment of the present application provides a reflective insulation film manufactured using the reflective insulation coating as described above.
The reflective heat-insulating coating not only has excellent light reflectivity and low heat conductivity, but also has excellent hardness, wear resistance and high weather resistance, and the prepared reflective heat-insulating film has excellent light reflectivity and low heat conductivity, and also has excellent hardness, wear resistance and high weather resistance.
The reflective insulation film can be prepared by the following method:
and (3) coating the reflective heat-insulating coating on a substrate, and drying to form a film to obtain the reflective heat-insulating film.
The material of the base material can be metal, alloy, macromolecule or composite material of a plurality of kinds.
In a specific example, the substrate is an aluminum plate, and before the coating step, the method further comprises a step of cleaning the aluminum plate with 10wt% sodium hydroxide and 10wt% sulfuric acid in order to remove impurities on the surface of the aluminum plate.
The reflective heat-insulating film has good reflection effect on light in the range of 200nm to 2500 nm.
An embodiment of the present application also provides a reflective insulation article comprising a reflective insulation film as described above.
The reflective heat insulation product has higher solar reflectance and near infrared reflectance, can reduce absorbed heat, achieves a heat insulation effect, has low heat conductivity coefficient, can block and reduce heat conduction speed, achieves a heat insulation effect, prevents outdoor heat from being transferred indoors in summer, prevents indoor heat from being transferred outdoors in winter, has excellent hardness, wear resistance and high weather resistance, and can prolong the service life of the reflective heat insulation product.
Such reflective insulation articles include, but are not limited to: building baffles, building walls, thermos cups, etc.
The application will be described in connection with specific embodiments, but the application is not limited thereto, and it will be appreciated that the appended claims outline the scope of the application, and those skilled in the art, guided by the inventive concept, will appreciate that certain changes made to the embodiments of the application will be covered by the spirit and scope of the appended claims.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
Example 1
(1) Hollow nano TiO 2 Is prepared from
12.5g of styrene, 7.5g of Methyl Methacrylate (MMA) and 95g of deionized water are mixed and stirred at a constant speed under the water bath condition of 70 ℃, an initiator APS (the mass is 10% of MMA) is slowly added dropwise into the mixture, and the mixture is centrifuged and dried after the reaction (3 h) time to obtain the polystyrene-methyl methacrylate copolymer microsphere.
Mixing 10g of prepared polystyrene-methyl methacrylate copolymer microsphere, 2g of tetrabutyl titanate and 26g of ethanol, dropwise adding a mixed solution of ethanol, deionized water and acetic acid (mass ratio of 5:1:2) to the mixture so as to hydrolyze the tetrabutyl titanate and coat the surface of the polystyrene-methyl methacrylate copolymer microsphere, standing and aging for 24 hours after the complete dropwise adding, drying and calcining at 500 ℃ for 2 hours, and decomposing and removing the polystyrene-methyl methacrylate copolymer microsphere in the calcining process to obtain the hollow titanium dioxide particles with the hollow structure.
(2) Nanometer hollow TiO 2 Preparation of a composite emulsion of/P (MMA/BA/MAA)
1g of the 50nm hollow titanium dioxide particles obtained in the above step was dispersed in a mixed solution of 48g of methyl methacrylate, 48g of butyl acrylate, 4g of methacrylic acid and 2g of butanol, stirred at room temperature of 25℃and pulverized with a cell pulverizer for 30min (power 500w, work 2s, pause 2 s) to obtain a solution A; adding initiator APS into the solution A, and reacting for 3 hours under the water bath condition of 75 ℃ to obtain nano hollow TiO 2 Composite emulsion of/P (MMA/BA/MAA). Nanometer hollow TiO 2 A TEM image of the core-shell structure of the/P (MMA/BA/MAA) complex is shown in FIG. 1.
(3) Preparation and modification of modified potassium titanate whisker
The potassium titanate whisker is prepared by a KDC method, and specifically comprises the following steps: 15.89g of TiO 2 And 5g K 2 CO 3 Through wet mixing, ball milling, drying, adding 2% sintering aid (CaO), calcining at 900 deg.C for 2 hr to obtain potassium titanate whisker.
40mg of silane coupling agent KH-550 is mixed with absolute ethyl alcohol, and the mixture is subjected to magnetic stirring under an acidic condition to hydrolyze the mixture, so as to obtain a solution B.
The prepared 2g of potassium titanate whisker is dispersed in 30g of ethanol, and a dispersing agent (ethylene bis stearamide) is added for ultrasonic dispersion, so as to obtain a solution C.
Pouring the solution C into the solution B, stirring at room temperature, filtering, washing with deionized water to neutrality, and drying to obtain the modified potassium titanate whisker.
(4) Preparation of reflective heat-insulating coating
The raw materials are provided in parts by weight: nanometer hollow TiO 2 70 parts of P (MMA/BA/MAA) composite emulsion, 5 parts of modified potassium titanate whisker, 5.0 parts of film forming auxiliary agent dodecanol ester, 0.01 part of defoaming agent (glycerol monostearate), 0.1 part of leveling agent (polydimethylsiloxane), 0.03 part of pH regulator (ammonia water) and 19.86 parts of deionized water.
The raw materials are stirred by magnetic force for 0.5 hour to be dispersed uniformly, and the reflective heat insulation coating with the pH value of 7 is prepared.
(5) The 1060 aluminum plate is scrubbed by using 10% sodium hydroxide and 10% sulfuric acid in sequence, and then washed 3 times by deionized water and dried for standby.
The reflective heat-insulating coating is respectively coated on the surface of a 1060 aluminum plate with the thickness of 100mm multiplied by 50mm multiplied by 1mm by using a BGD four-side preparation device, and the reflective heat-insulating coating is formed in an electrothermal blowing constant temperature drying oven with the temperature of 80 ℃ for 3 days to obtain the reflective heat-insulating film.
(6) Testing performance; the method is as follows
And the temperature difference testing instrument is used for testing the highest heat insulation temperature difference of the reflective heat insulation film, and the larger the heat insulation temperature difference is, the better the heat insulation effect is. Specific reference standard JGT235-2008 building reflective heat-insulating paint
1. The hardness of the reflective insulation film was measured according to the national standard GB/T6739-1996.
2. The reflective insulation film was tested for adhesion by the cross-hatch method according to the national standard GB/T9286-1998, with smaller grade values representing greater adhesion.
3. The reflective insulation film was tested for water resistance for 7 days according to the national standard GB/T1733-1993A method.
4. According to the national standard GB/T9274-1988A method, the acid resistance of the reflective heat insulation film is tested, and the test conditions are as follows: 10wt% H 2 SO 4 The solution was taken for 2d (days).
5. According to the national standard GB/T9274-1998A, the alkali resistance of the reflective heat insulation film is tested under the following test conditions: 20wt% NaOH solution for 3d (days).
The specific results are shown in Table 1.
Further, the light reflection performance of the reflective heat insulating film was measured, and the light reflection curve obtained by the measurement is shown as T1 in fig. 2, and the abscissa represents the wavelength (wavelength, nm) of light and the ordinate represents the light reflection (reflectance).
Example 2
(1) Hollow nano TiO 2 Is prepared from
15g of styrene, 8g of Methyl Methacrylate (MMA) and 97g of deionized water are mixed and stirred at a constant speed under the water bath condition of 75 ℃, an initiator KPS (mass is 10% of MMA) is slowly added dropwise into the mixture, and the mixture is centrifuged and dried after 3.5h of reaction, so that the polystyrene-methyl methacrylate copolymer microsphere is obtained.
Mixing 12g of the prepared polystyrene-methyl methacrylate copolymer microsphere, 4g of tetrabutyl titanate and 35g of ethanol, dropwise adding a mixed solution of ethanol, deionized water and acetic acid (the mass ratio is 6:1:2) to hydrolyze the tetrabutyl titanate and coat the surface of the polystyrene-methyl methacrylate copolymer microsphere, standing and aging for 16h after the complete dropwise adding, drying and calcining at 600 ℃ for 2.5h, and decomposing and removing the polystyrene-methyl methacrylate copolymer microsphere in the calcining process to obtain hollow titanium dioxide particles with a hollow structure, wherein the particle size is 10-500 nm.
(2) Nanometer hollow TiO 2 Preparation of a composite emulsion of/P (MMA/BA/MAA)
1.5g of the hollow titanium dioxide particles with the particle size of 200nm prepared in the above step were dispersed in a mixed solution of 45g of methyl methacrylate, 48g of butyl acrylate, 7g of methacrylic acid and 1.5g of octadecane, stirred at room temperature of 25℃and pulverized with a cell pulverizer for 30min (power 500w, work 2s, pause 2 s) to obtain a solution A; adding 1g of initiator AIBN into the solution A, and reacting for 3.5h under the water bath condition of 80 ℃ to obtain nano hollow TiO 2 Composite emulsion of/P (MMA/BA/MAA).
(3) Preparation and modification of modified potassium titanate whisker
The potassium titanate whisker is prepared by a KDC method, and specifically comprises the following steps: 20g of TiO 2 And 8g K 2 CO 3 Through wet mixing, ball milling, drying, adding 1.5% sintering assistant MgO, calcining at 1000 deg.c for 1.5 hr to obtain potassium titanate whisker.
80mg of silane coupling agent KH-550 is mixed with absolute ethyl alcohol, and the mixture is subjected to magnetic stirring under an acidic condition to hydrolyze the mixture, so as to obtain a solution B.
3g of the prepared potassium titanate whisker is dispersed in 20g of ethanol, and dispersant glyceryl monostearate is added for ultrasonic dispersion to obtain solution C.
Pouring the solution C into the solution B, stirring at room temperature, filtering, washing with deionized water to neutrality, and drying to obtain the modified potassium titanate whisker.
(4) Preparation of reflective heat-insulating coating
The raw materials are provided in parts by weight: nanometer hollow TiO 2 65 parts of P (MMA/BA/MAA) composite emulsion, 8 parts of modified potassium titanate whisker, 5.0 parts of film forming auxiliary agent dodecyl alcohol ester, 0.01 part of defoamer lauryl phenylacetate, 0.1 part of flatting agent silicone oil, 0.03 part of pH regulator ammonia water and 21.86 parts of deionized water.
The raw materials are stirred by magnetic force for 0.5 hour to be dispersed uniformly, and the reflective heat insulation coating with the pH value of 7 is prepared.
Steps (5) and (6) are the same as steps (5) and (6) in example 1. The specific results are shown in Table 1.
The light reflection properties of the reflective insulation film were tested, and the test light reflection curve was shown as T2 in fig. 1.
Example 3
(1) Hollow nano TiO 2 Is prepared from
17g of styrene, 9g of Methyl Methacrylate (MMA) and 90g of deionized water are mixed and stirred at a constant speed under the water bath condition of 80 ℃, an initiator AIBN (the mass is 10 percent of MMA) is slowly added dropwise into the mixture, and after 4 hours of reaction, the mixture is centrifuged and dried to obtain the polystyrene-methyl methacrylate copolymer microsphere.
Mixing 14g of prepared polystyrene-methyl methacrylate copolymer microsphere, 5g of tetrabutyl titanate and 23g of ethanol, dropwise adding a mixed solution of ethanol, deionized water and acetic acid (the mass ratio is 8:1:3) to hydrolyze the tetrabutyl titanate and coat the surface of the polystyrene-methyl methacrylate copolymer microsphere, standing and aging for 14h after the complete dropwise adding, drying and calcining at 650 ℃ for 3h, and decomposing and removing the polystyrene-methyl methacrylate copolymer microsphere in the calcining process to obtain the hollow titanium dioxide particles with the hollow structure.
(2) Nanometer hollow TiO 2 Preparation of a composite emulsion of/P (MMA/BA/MAA)
2g of the hollow titanium dioxide particles with the particle size of 400nm prepared in the above step were dispersed in a mixed solution of 46g of methyl methacrylate, 50g of butyl acrylate, 4g of methacrylic acid and 1.5g of cumene, stirred at room temperature of 25℃and pulverized for 30min (power 500w, work 2s, pause 2 s) with a cell pulverizer to obtain a solution A; adding an initiator KPS into the solution A, and reacting for 4 hours under the water bath condition of 80 ℃ to obtain nano hollow TiO 2 Composite emulsion of/P (MMA/BA/MAA).
(3) Preparation and modification of modified potassium titanate whisker
The potassium titanate whisker is prepared by a KDC method, and specifically comprises the following steps: 10g of TiO 2 And 1.5. 1.5g K 2 CO 3 Through wet mixing, ball milling, drying, adding 2% sintering assistant CaO, calcining at 900 deg.C for 2h, potassium titanate whisker is obtained.
60mg of silane coupling agent 3- (methacryloyloxy) propyltrimethylsilane was mixed with absolute ethanol and subjected to magnetic stirring under acidic conditions to hydrolyze the mixture, thereby obtaining solution B.
The prepared 5g of potassium titanate whisker was dispersed in 35g of ethanol, and a dispersant (glyceryl tristearate was added for ultrasonic dispersion to obtain a solution C.
Pouring the solution C into the solution B, stirring at room temperature, filtering, washing with deionized water to neutrality, and drying to obtain the modified potassium titanate whisker.
(4) Preparation of reflective heat-insulating coating
The raw materials are provided in parts by weight: nanometer hollow TiO 2 72 parts of composite emulsion of (MMA/BA/MAA), 10 parts of modified potassium titanate whisker and dodecanol ester as film forming additive5.0 parts of defoamer (phenethyl alcohol oleate), 0.1 parts of flatting agent (urea-formaldehyde resin), 0.03 parts of pH regulator (50 wt% NaOH aqueous solution) and 12.86 parts of deionized water.
The raw materials are stirred by magnetic force for 0.5 hour to be dispersed uniformly, and the reflective heat insulation coating with the pH value of 8 is prepared.
Steps (5) and (6) are the same as steps (5) and (6) in example 1. The specific results are shown in Table 1.
Example 4
Example 4 is substantially the same as example 3, except that: in the preparation of the reflective heat-insulating coating in the step (4), nano hollow TiO 2 The composite emulsion of MMA/BA/MAA is 68 parts, modified potassium titanate whisker is 15 parts, and a film forming additive is 4.0 parts of dodecanol ester.
The remaining steps and process conditions were the same as in example 3.
Example 5
Example 5 is substantially the same as example 3, except that: in the preparation of the reflective heat-insulating coating in the step (4), nano hollow TiO 2 The composite emulsion of (MMA/BA/MAA) was 70 parts, modified potassium titanate whisker 3 parts, and film-forming aid dodecanol ester 5.0 parts, and the water parts were adjusted to make the solid content of the reflective heat-insulating coating the same as in example 3.
The remaining steps and process conditions were the same as in example 3.
Example 6
Example 6 is substantially the same as example 3, except that: the only differences are that: in the preparation of the reflective heat-insulating coating in the step (4), nano hollow TiO 2 The composite emulsion of (MMA/BA/MAA) was 75 parts, 1 part of modified potassium titanate whisker and 5.0 parts of dodecanol ester as a film forming aid, and the solid content of the reflective heat-insulating coating was adjusted by adjusting the parts of water.
The remaining steps and process conditions were the same as in example 3.
Comparative example 1
Comparative example 1 is substantially the same as example 3 except that: in the preparation of the reflective heat-insulating coating in the step (4), nano hollow TiO 2 The composite emulsion of MMA/BA/MAA is 64 parts, modified potassium titanate9 parts of whisker and 4.0 parts of film forming auxiliary agent dodecanol ester.
The remaining steps and process conditions were the same as in example 3.
Comparative example 2
Comparative example 2 is substantially the same as example 3 except that: the hollow titania particles in step (2) of example 3 were replaced with solid titania particles of equal mass.
The remaining steps and process conditions were the same as in example 3.
Comparative example 3
Comparative example 3 is substantially the same as example 3 except that: in the step (2), the P (MMA/BA/MAA) emulsion is directly synthesized without adding hollow titanium dioxide particles.
In the step (4), the raw materials are provided in parts by weight: nanometer hollow TiO 2 1.4 parts of P (MMA/BA/MAA) emulsion 70.6 parts, modified potassium titanate whisker 10 parts, a film forming auxiliary agent dodecanol ester accounting for 5.0 parts, a defoaming agent 0.01 parts, a leveling agent 0.1 parts, a pH regulator (50 wt% NaOH aqueous solution) 0.03 parts and deionized water 12.86 parts. The raw materials are stirred by magnetic force for 0.5 hour to be dispersed uniformly, and the reflective heat insulation coating is prepared.
The remaining steps and process conditions were the same as in example 3.
The test results of each example and comparative example are shown in table 1.
TABLE 1
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Note that: "failed" means failed the test, failing.
As can be seen from the test results in Table 1 and FIG. 1, the reflective heat-insulating coating prepared by the application has excellent light reflectivity, low heat conductivity, excellent hardness, wear resistance and high weather resistance.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims (19)

1. The reflective heat-insulating coating is characterized by comprising the following components in parts by weight: 65 to 75 parts of polymer emulsion, 1 to 20 parts of modified potassium titanate whisker, 5.0 to 8.0 parts of film forming auxiliary agent, 0.01 to 0.03 part of defoamer, 0.1 to 0.5 part of flatting agent, 0.03 to 0.05 part of pH regulator and 10 to 30 parts of water;
the components in the polymer emulsion comprise a composite of methyl methacrylate-butyl acrylate-methacrylic acid copolymer and hollow titanium dioxide particles, wherein the composite of the methyl methacrylate-butyl acrylate-methacrylic acid copolymer and the hollow titanium dioxide particles has a core-shell structure with the hollow titanium dioxide particles as cores and the methyl methacrylate-butyl acrylate-methacrylic acid copolymer as shells;
the modified potassium titanate whisker is a potassium titanate whisker modified by a silane coupling agent;
the preparation step of the polymer emulsion comprises the following steps:
mixing hollow titanium dioxide particles, methyl methacrylate, butyl acrylate, methacrylic acid and an oily solvent to obtain a mixed solution;
then mixing the mixed solution with an initiator, and carrying out polymerization reaction to obtain the polymer emulsion;
the preparation method of the hollow titanium dioxide comprises the following steps:
mixing the polymer microsphere, the titanium dioxide precursor and the solvent, and then hydrolyzing, aging and calcining to obtain the hollow titanium dioxide.
2. The reflective insulation coating of claim 1, wherein the polymer emulsion is 65-72 parts by mass and the modified potassium titanate whisker is 5-15 parts by mass.
3. The reflective insulation coating of any one of claims 1-2, wherein the mass of the hollow titanium dioxide particles in the composite is 0.5% -5% of the mass of the methyl methacrylate-butyl acrylate-methacrylic acid copolymer.
4. The reflective insulation coating according to any one of claims 1 to 2, wherein the mass ratio of the methyl methacrylate structural unit, the butyl acrylate structural unit and the methacrylic acid structural unit in the methyl methacrylate-butyl acrylate-methacrylic acid copolymer is (40 to 50): 1 to 10.
5. The reflective insulation coating of claim 4, wherein the polymer emulsion has a solids content of 30% to 40%.
6. The reflective insulation coating of any one of claims 1-2, wherein the polymer emulsion has a solids content of 30% -40%.
7. The reflective insulation coating of any one of claims 1-2, wherein the hollow titanium dioxide particles have a particle size of 10nm to 500nm.
8. The reflective insulation coating of any one of claim 1 to 2,
the pH value of the reflective heat insulation coating is 7-8.
9. The method for preparing the reflective insulation coating according to any one of claims 1 to 8, comprising the steps of:
and mixing the polymer emulsion, the modified potassium titanate whisker, the film-forming auxiliary agent, the defoaming agent, the leveling agent, the pH regulator and the water to obtain the reflective heat-insulating coating.
10. The method for preparing the reflective insulation coating according to claim 9, wherein the step of preparing the modified potassium titanate whisker comprises the steps of:
mixing a silane coupling agent with absolute ethyl alcohol and hydrolyzing to obtain a solution B;
mixing potassium titanate whisker, a dispersing agent and ethanol to obtain a solution C;
and mixing, activating and drying the solution B and the solution C to obtain the modified potassium titanate whisker.
11. The method for preparing a reflective insulation coating according to claim 10, wherein the mass of the silane coupling agent is 1% -5% of the mass of the potassium titanate whisker.
12. The method for preparing a reflective insulation coating according to claim 10 or 11, wherein the silane coupling agent comprises one or more of KH-550, KH-560, 3- (methacryloyloxy) propyl trimethylsilane, hexadecyltrimethylsilane.
13. The method of preparing a reflective insulation coating of claim 9, wherein the polymeric microspheres comprise a styrene-methyl methacrylate copolymer.
14. The method for preparing a reflective insulation coating according to claim 9 or 13, wherein the mass ratio of the titanium dioxide precursor to the polymer microspheres is (3.5-7): 1.
15. The method for preparing the reflective insulation coating according to claim 9 or 13, wherein the calcination temperature is 500 ℃ to 800 ℃ and the time is 0.5h to 3h.
16. The method for preparing the reflective insulation coating according to claim 9 or 13, wherein the aging time is 12-24 hours.
17. The method for preparing a reflective insulation coating according to claim 9 or 13, wherein the mass ratio of the titanium dioxide precursor to the polymer microspheres is (3.5-7) 1; the calcination temperature is 500-800 ℃ and the calcination time is 0.5-3 h; the aging time is 12-24 hours.
18. A reflective insulation film, wherein the reflective insulation film is prepared from the reflective insulation coating according to any one of claims 1 to 8.
19. A reflective insulation article comprising the reflective insulation film of claim 18.
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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101497729A (en) * 2009-02-20 2009-08-05 上海三瑞化学有限公司 Nano silicasol / acrylic ester composite emulsion and preparation thereof
CN101805433A (en) * 2010-04-06 2010-08-18 武汉力诺化学集团有限公司 Method for producing hollow microsphere modified fluoro-silicone emulsion and outer wall heat-insulating coating thereof
CN102532428A (en) * 2011-12-31 2012-07-04 浙江大学 Nano-grade TiO2/silicone-acrylate core-shell composite emulsion and preparation method thereof
CN104725971A (en) * 2015-03-25 2015-06-24 常州大学 Multifunctional thermal insulation coating containing titanium dioxide/attapulgite nanocomposite material and preparation method thereof
CN104761741A (en) * 2015-04-17 2015-07-08 陕西科技大学 Preparation method for hollow titanium dioxide/polyacrylate composite film with insulation performance
KR101736623B1 (en) * 2015-12-18 2017-05-17 주식회사 포스코 Hollow structured photo-catalytic particles, method for preparing the particles, resin composition comprising the particles, steel sheet having coating layer formed by the resin composition and method for coating by using the resin composition
CN106833227A (en) * 2017-01-20 2017-06-13 四川大学 A kind of aqueous compound insulating moulding coating and preparation method thereof
KR102028349B1 (en) * 2019-04-05 2019-10-04 유스켐주식회사 Heat-isolating paint with high performance

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101497729A (en) * 2009-02-20 2009-08-05 上海三瑞化学有限公司 Nano silicasol / acrylic ester composite emulsion and preparation thereof
CN101805433A (en) * 2010-04-06 2010-08-18 武汉力诺化学集团有限公司 Method for producing hollow microsphere modified fluoro-silicone emulsion and outer wall heat-insulating coating thereof
CN102532428A (en) * 2011-12-31 2012-07-04 浙江大学 Nano-grade TiO2/silicone-acrylate core-shell composite emulsion and preparation method thereof
CN104725971A (en) * 2015-03-25 2015-06-24 常州大学 Multifunctional thermal insulation coating containing titanium dioxide/attapulgite nanocomposite material and preparation method thereof
CN104761741A (en) * 2015-04-17 2015-07-08 陕西科技大学 Preparation method for hollow titanium dioxide/polyacrylate composite film with insulation performance
KR101736623B1 (en) * 2015-12-18 2017-05-17 주식회사 포스코 Hollow structured photo-catalytic particles, method for preparing the particles, resin composition comprising the particles, steel sheet having coating layer formed by the resin composition and method for coating by using the resin composition
CN106833227A (en) * 2017-01-20 2017-06-13 四川大学 A kind of aqueous compound insulating moulding coating and preparation method thereof
KR102028349B1 (en) * 2019-04-05 2019-10-04 유스켐주식회사 Heat-isolating paint with high performance

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
唐磊等.耐高温隔热材料技术.北京：国防工业出版社,2013,119页. *

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