CN114854263B - Building coating for indirectly reducing carbon emission and preparation method thereof - Google Patents

Building coating for indirectly reducing carbon emission and preparation method thereof Download PDF

Info

Publication number
CN114854263B
CN114854263B CN202210733300.5A CN202210733300A CN114854263B CN 114854263 B CN114854263 B CN 114854263B CN 202210733300 A CN202210733300 A CN 202210733300A CN 114854263 B CN114854263 B CN 114854263B
Authority
CN
China
Prior art keywords
nano
graphene oxide
parts
composite material
carbon
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202210733300.5A
Other languages
Chinese (zh)
Other versions
CN114854263A (en
Inventor
陈自金
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongguan Jinji Environmental Protection Technology Co ltd
Original Assignee
Dongguan Jinji Environmental Protection Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dongguan Jinji Environmental Protection Technology Co ltd filed Critical Dongguan Jinji Environmental Protection Technology Co ltd
Priority to CN202210733300.5A priority Critical patent/CN114854263B/en
Publication of CN114854263A publication Critical patent/CN114854263A/en
Application granted granted Critical
Publication of CN114854263B publication Critical patent/CN114854263B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • 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
    • 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
    • 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
    • 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
    • C09D7/65—Additives macromolecular
    • 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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2206—Oxides; Hydroxides of metals of calcium, strontium or barium
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C08K2003/2241—Titanium dioxide
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2296—Oxides; Hydroxides of metals of zinc
    • 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
    • C08K2201/011—Nanostructured additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/02—Flame or fire retardant/resistant
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation

Landscapes

  • 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)
  • Carbon And Carbon Compounds (AREA)

Abstract

The invention discloses an architectural coating for indirectly reducing carbon emission, belonging to the technical field of architectural coatings. In addition, the preparation method of the building coating is simple and easy to operate, and is suitable for popularization.

Description

Building coating for indirectly reducing carbon emission and preparation method thereof
Technical Field
The invention belongs to the technical field of building coatings, and particularly relates to a building coating for indirectly reducing carbon emission and a preparation method thereof.
Background
With the rapid development of residential construction, the pursuit of comfortable living environment has greatly stimulated the popularization and application of various architectural coatings. Meanwhile, the development of the coating industry also brings the problem of environmental pollution, and most coatings contain volatile organic solvent components, so that volatile harmful substances are generated in the construction and use processes, the air quality is reduced, and the human health is influenced.
In recent years, the water-based paint mainly uses water as a solvent or a dispersant, can effectively reduce or even avoid the use of organic solvents, greatly reduces the discharge of VOC, has the characteristics of no pungent smell, easy purification, low construction requirement, easy obtainment, low pollution and the like, is called as a green paint, and has great advantages in the aspects of energy conservation, production, storage, price and the like. Particularly, under the background of formally proposing a carbon peak-to-peak and carbon neutral ambitious goal in China, the paint industry as an important ring for realizing a double-carbon goal must surround energy structure transformation, scientific and technological innovation, attack and customs, industrial chain coordinated carbon reduction, and deeply merge into a new journey of practicing the double-carbon goal. In the aspect of selecting materials, technical innovation must be accelerated, and new technologies for emission reduction and consumption reduction must be developed. Therefore, the designed water-based building coating for reducing carbon emission has the advantages of excellent heat insulation and heat preservation, fire prevention safety, water resistance, crack resistance, artificial aging resistance and environmental protection, is an important research subject and development direction of building energy-saving technology and materials at home and abroad, and is a future development trend of the building energy-saving engineering market.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the building coating for indirectly reducing the carbon emission, which does not contain organic solvent, does not contain formaldehyde, is environment-friendly, and has excellent heat insulation and heat preservation performance, fireproof performance, water resistance, crack resistance and artificial aging resistance.
In order to achieve the purpose, the invention adopts the following technical scheme:
the building coating for indirectly reducing carbon emission comprises the following raw materials in parts by weight: 12 to 20 parts of nano forsterite powder, 20 to 30 parts of quicklime, 9 to 15 parts of nano far infrared titanium dioxide, 4 to 8 parts of aerogel, 8 to 12 parts of nano heat dissipation ceramic powder, 2 to 6 parts of modified graphene oxide/carbon nano tube composite material, 20 to 40 parts of film forming emulsion, 2 to 5 parts of film forming additive and 2 to 6 parts of additive.
Preferably, the aerogel is prepared from nano-crystalline cellulose aerogel loaded with nano-zinc oxide and amino modified silica aerogel according to a mass ratio of 3-5: 1-3, mixing; wherein the particle size of the amino modified silicon dioxide aerogel is 50-90 nm, the porosity is 90-92%, and the dry density is 50-65 kg/m 3 The heat conductivity coefficient is 0.015-0.028W/(m.K). The amino modified silica aerogel has higher porosity, larger specific surface area and extremely low thermal conductivity, and related research results show that the amino modified silica aerogel has excellent adsorption capacity on formaldehyde, and can endow building coating with good heat preservation and insulation performance and harmful gas adsorption performance; the nano-cellulose aerogel loaded with nano-zinc oxide has the particle size of 35-68 nm and the dry density of 40-60 kg/m 3 . The nano-cellulose aerogel loaded with nano-zinc oxide is a porous material and has the characteristics of high porosity, large specific surface area and low thermal conductivity, the problems of poor toughness and easy cracking of a coating film of the coating can be greatly improved by compounding the nano-cellulose aerogel loaded with nano-zinc oxide and amino modified silicon dioxide aerogel into a coating matrix, and meanwhile, the building coating is endowed with excellent heat insulation performance, cracking resistance and purple resistanceExternal lines, air purification, mechanical properties and the like.
Preferably, the particle size of the nano forsterite powder is 200-400 nm, and the nano forsterite powder has the characteristics of high melting point (1-890 ℃), low thermal expansion coefficient and low thermal conductivity coefficient, shows good fire resistance, and still has good chemical stability and excellent insulating property even at high temperature, so that the nano forsterite powder can be added into a coating to endow a building coating with good fire resistance.
Preferably, the particle size of the nano heat dissipation ceramic powder is 500-700 nm, the main components of the nano heat dissipation ceramic powder comprise C, O, mg, si, al and the like, the refractive index is very high, and the radiance of the nano heat dissipation ceramic powder in the far infrared wavelength range of 6-24 microns is up to 80%, so that absorbed heat energy can be converted into light energy to be radiated, namely the nano heat dissipation ceramic powder has excellent functions of heat insulation and wear resistance; the nano far infrared titanium dioxide is also called rutile type TiO 2 The particle size is 300-700 nm, and the product has excellent infrared reflectivity (wavelength below 3 μm), heat reflectivity, heat insulation, acid resistance and long-term stability. The nano heat dissipation ceramic powder and the nano far infrared titanium dioxide are matched and added into the coating, so that the heat insulation and wear resistance of the building coating can be further improved, and the nano heat dissipation ceramic powder, the nano forsterite powder and the nano far infrared titanium dioxide with the particle sizes are uniformly dispersed in the coating system, so that the comprehensive performance and the appearance uniformity of the building coating can be further improved.
Preferably, the modified graphene oxide/carbon nanotube composite material is a dichloros-triazine modified graphene oxide/carbon nanotube composite material, and the preparation steps are as follows: (1) Preparing graphene oxide by using natural crystalline flake graphite as a raw material and adopting an improved Hummer method; (2) acidifying the modified carbon nanotubes; (3) Mixing the acidified modified carbon nano tube with graphene oxide, performing ultrasonic dispersion, filtering the mixed product after ultrasonic treatment by using a polytetrafluoroethylene filter membrane, washing with deionized water and absolute ethyl alcohol respectively in the filtering process, drying, and grinding to obtain a graphene oxide/carbon nano tube composite material; (4) Performing surface modification on the graphene oxide/carbon nano tube composite material by adopting a bisamino silane coupling agent to prepare an amino modified graphene oxide/carbon nano tube composite material; (5) Dissolving trichloro-sym-triazine in absolute ethyl alcohol, stirring and swelling at 0 ℃, dispersing the amino modified graphene oxide/carbon nanotube composite material in the absolute ethyl alcohol, adding triethylamine serving as an acid-binding agent, uniformly mixing, slowly adding the mixed solution into the trichloro-sym-triazine solution at 0 ℃, stirring and reacting, controlling the temperature to be 0-5 ℃ all the time in the reaction process, washing and drying after the reaction is finished, and obtaining the dichloro-sym-triazine modified graphene oxide/carbon nanotube composite material.
Preferably, the mass ratio of the graphene oxide to the carbon nanotubes to the trichloro-triazine is 0.5-1.5: 4 to 6:0.05 to 0.1; the pipe diameter of the carbon nano tube is 15-60 nm, and the bulk density is 15-65 kg/m; the bisaminosilane coupling agent is any one of N- (2-aminoethyl) -3-aminopropylmethyldimethoxysilane, N-beta- (aminoethyl) -gamma-aminopropylmethyldimethoxysilane or N- (beta-aminoethyl) -gamma-aminopropyltriethoxysilane.
Graphene is a nanoscale material with light weight, high strength, excellent thermal conductivity and strong radiance (the thermal conductivity coefficient can reach 5300W/m.K, and the radiance coefficient is more than 0.9), can achieve zero penetration although the theoretical thickness is about 0.3 nm, can almost isolate water, oxygen and sodium ions, has hydrophobic and oleophobic properties, has a laminated structure with a labyrinth effect, and can prevent water, corrosive ions and the like from penetrating into a metal substrate; since at 232.26nm, graphene oxide has a strong absorption peak with aromatic C = C double bonds; and the reduced graphene oxide with the reconstructed aromatic pi conjugated system also has a strong absorption peak at 262.42nm, and the graphene oxide has a weaker C-O bond absorption peak at 301.65 nm. Therefore, the graphene oxide can absorb ultraviolet light of 100 nm-280 nm and has a reflection impedance effect on the ultraviolet light of more than 280 nm. The graphene oxide/carbon nanotube composite material is prepared by compounding the graphene oxide/carbon nanotube composite material with the carbon nanotube, and has the advantages of both graphene and the carbon nanotube. The graphene/carbon nanotube composite material is added into the coating matrix, so that the building coating has good water resistance and artificial aging resistance. By matching the graphene oxide/carbon nanotube composite material with the nano far infrared titanium dioxide and the nano heat dissipation ceramic powder, the thermal radiation coefficient can be greatly improved, the heat exchange efficiency of the surface of the coating is improved, and the heat preservation and heat insulation performance of the building coating is further improved.
Preferably, the auxiliary agent comprises a dispersing agent, a defoaming agent, a wetting agent and a thickening agent; the dispersing agent is prepared from sodium lignosulfonate and polyethylene oxide according to a mass ratio of 1: 1-3, wherein the defoaming agent is any one of an organic silicon defoaming agent, a polyether defoaming agent and an aqueous mineral oil emulsion, the thickening agent is any one of carboxymethyl cellulose, hydroxyethyl cellulose and hydroxypropyl methyl cellulose, the film-forming assistant is any one of dipropylene glycol methyl ether, polyvinyl acetate and dipropylene glycol butyl ether, and the wetting agent is any one of polyoxyethylene fatty alcohol ether, polyoxyethylene alkylphenol ether and fatty acid ester sulfate.
Preferably, the film-forming emulsion is acrylic emulsion or pure acrylic emulsion, and further preferably pure acrylic emulsion, the solid content is 44-50%, the viscosity is 500-1200 Pa s, and the pH value is 7.5-9.0.
The invention also aims to provide a preparation method of the building coating for indirectly reducing the carbon emission, which comprises the following steps:
s1, preparing a modified graphene oxide/carbon nanotube composite material;
s2, weighing the modified graphene oxide/carbon nano tube composite material, 1/2 dispersing agent and 1/2 film forming emulsion according to the formula, adding the materials into water, stirring and dispersing to obtain modified graphene oxide/carbon nano tube composite material dispersion liquid;
s3, adding quicklime, aerogel, nano far infrared titanium dioxide, nano heat dissipation ceramic powder, nano forsterite powder and 1/2 dispersing agent into water according to a formula, and stirring to obtain mixed slurry A;
and S4, adding the modified graphene oxide/carbon nano tube composite material dispersion liquid, 1/2 of film-forming emulsion, a film-forming assistant and an assistant into the mixed slurry A, and stirring to obtain the building coating.
Preferably, in the step S2, the modified graphene oxide/carbon nanotube composite dispersion liquid has a mass fraction of 1.2-2.5%, a stirring rate of 200-400 r/min, and a stirring time of 10-25 min; in the step S3, the stirring speed is 200-400 r/min, and the stirring time is 20-35 min; in the step S4, the stirring speed is 600-800 r/min, and the stirring time is 20-45 min.
The invention has the following beneficial effects:
(1) In the invention, when the graphene oxide/carbon nanotube composite material and other nano materials are combined with a high-molecular film-forming emulsion matrix, the graphene oxide/carbon nanotube composite material and other nano materials have the problems of agglomeration and uneven dispersion in the matrix, and the excellent performance of the graphene oxide/carbon nanotube composite material and other nano materials can be only partially reserved. In view of the above, the invention adopts a surfactant method to prepare a high-concentration stable aqueous dispersion of the graphene oxide/carbon nanotube composite, adopts two surfactants of polyoxyethylene and sodium lignosulfonate to compound according to a certain proportion to improve the dispersion effect of the nano material in water, and solves the bottleneck that the graphene oxide/carbon nanotube composite and other nano materials are difficult to disperse in a high molecular emulsion matrix because the long polymer chain of the polyoxyethylene can effectively coat a graphene sheet layer and a carbon nanotube surface layer, and the double bond and the benzene ring of the sodium lignosulfonate can respectively form pi-pi interaction force with the large pi bond on the graphene surface and the pi bond on the carbon nanotube wall, thereby further preparing the building coating with excellent comprehensive performance;
(2) According to the invention, a bisaminosilane coupling agent is used for modifying a graphene oxide/carbon nanotube composite material to obtain an amino modified graphene/carbon nanotube composite material, and then the amino modified graphene/carbon nanotube composite material is reacted with trichloro-s-triazine (triazine derivatives are broad-spectrum ultraviolet-resistant absorbents with high temperature resistance and good solubility and strong absorption at 280-380 nm), and an s-triazine active group is introduced on the composite material to prepare a dichloros-triazine modified graphene oxide/carbon nanotube composite material, wherein the prepared dichloros-triazine modified graphene oxide/carbon nanotube composite material can form a covalent bond between the composite material and cellulose through a fiber reaction with nano-zinc oxide-loaded nano-cellulose (nano-zinc oxide has flame resistance and ultraviolet resistance), and can also form a covalent bond between the composite material and the cellulose through an amino reaction with amino modified silica aerogel (amino functionalized silica aerogel has excellent formaldehyde adsorption performance and can purify air), so that the dispersion performance of the composite material and the ultraviolet-loaded nano-zinc oxide in a matrix is further enhanced, and the finally prepared building aerogel has excellent heat insulation performance and heat insulation performance of the air purification aerogel and heat insulation coating; in addition, the toughness and the mechanical strength of the obtained architectural coating are greatly increased by utilizing the principle of surface functionalization of the nano-cellulose aerogel, toughening of the amino modified silica aerogel and the interface structure thereof and the advantage of cross reticulation formed by the three-dimensional aerogel and the macromolecular chains.
(3) According to the invention, the building coating for indirectly reducing carbon emission is obtained by compounding the raw materials of nano forsterite powder, quicklime, nano far infrared titanium dioxide, aerogel (consisting of cellulose aerogel loaded with nano zinc oxide and amino modified silica aerogel), nano heat dissipation ceramic powder, modified graphene oxide/carbon nanotube composite material, film-forming emulsion and the like according to a specific proportion, and through the synergistic compounding of the raw materials, the heat insulation, fire resistance, water resistance, crack resistance and artificial aging resistance of the building coating can be effectively improved, and the mechanical property stability of the coating is kept.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details.
Example 1
The building coating for indirectly reducing carbon emission comprises the following raw materials in parts by weight: 15 parts of nano forsterite powder, 25 parts of quicklime, 12 parts of nano far infrared titanium dioxide, 6 parts of aerogel (3 parts of cellulose aerogel loaded with nano zinc oxide and 3 parts of amino modified silica aerogel), 10 parts of nano heat dissipation ceramic powder, 3 parts of modified graphene oxide/carbon nanotube composite material, 30 parts of pure acrylic emulsion, 4 parts of dipropylene glycol methyl ether, and 3 parts of auxiliary agent (1 part of sodium dodecyl sulfate, 1 part of organic silicon defoamer, 0.5 part of polyoxyethylene alkylphenol ether and 0.5 part of carboxymethyl cellulose);
the preparation method of the building coating for indirectly reducing carbon emission comprises the following steps:
s1, preparing a dichloro-S-triazine modified graphene oxide/carbon nanotube composite material, which comprises the following preparation steps: (1) The method is characterized in that 6g of natural crystalline flake graphite is used as a raw material, and an improved Hummer method is adopted to prepare graphene oxide, which is the prior art in the field and is not described herein; (2) acidifying the modified carbon nanotubes: weighing 45ml of concentrated sulfuric acid and 15ml of concentrated nitric acid, uniformly mixing, pouring into 4g of carbon nano tubes, performing ultrasonic dispersion, stirring at 58 ℃ while reacting for 5 hours, adding water for diluting by 10 times, performing suction filtration, washing with deionized water and absolute ethyl alcohol, and drying to obtain acidified modified carbon nano tubes; (3) Mixing the acidified modified carbon nano tube and 1g of graphene oxide, performing ultrasonic dispersion, filtering the mixed product after ultrasonic treatment by using a polytetrafluoroethylene filter membrane, washing by using deionized water and absolute ethyl alcohol respectively in the filtering process, drying, and grinding to obtain a graphene oxide/carbon nano tube composite material; (4) Adding 150mg of graphene oxide/carbon nano tube composite material into 35ml of absolute ethyl alcohol, rapidly stirring, performing ultrasonic treatment for 30min, adding 10ml of N-beta- (aminoethyl) -gamma-aminopropyl methyl dimethoxysilane into the dispersion liquid at room temperature, and reacting for 4h to obtain an amino modified graphene oxide/carbon nano tube composite material; (5) Dissolving 25mmol of trichlorotriazine in absolute ethyl alcohol, stirring and swelling at 0 ℃, dispersing the amino modified graphene oxide/carbon nanotube composite material in the absolute ethyl alcohol, adding triethylamine serving as an acid-binding agent, uniformly mixing, slowly adding the mixed solution into the trichlorotriazine solution at 0 ℃, stirring and reacting, controlling the temperature to be 0-5 ℃ all the time in the reaction process, washing and drying after the reaction is finished, so as to obtain the dichlorosymtriazine modified graphene oxide/carbon nanotube composite material;
s2, weighing the modified graphene oxide/carbon nanotube composite material, a 1/2 dispersing agent and a 1/2 film-forming emulsion according to a formula, adding the materials into water, and stirring and dispersing at a stirring speed of 300r/min for 15min to obtain a modified graphene oxide/carbon nanotube composite material dispersion liquid with the mass fraction of 1.5%;
s3, weighing quicklime, aerogel, nano far-infrared titanium dioxide, nano heat dissipation ceramic powder, nano forsterite powder and 1/2 dispersing agent according to the weight parts, sequentially adding the materials into water, and stirring at a stirring speed of 350r/min for 25min to obtain mixed slurry A;
and S4, adding the modified graphene oxide/carbon nano tube composite material dispersion liquid, 1/2 of film-forming emulsion, a film-forming auxiliary agent, a wetting agent, a thickening agent and a defoaming agent into the mixed slurry A, and stirring at a stirring speed of 700r/min for 40min to obtain the building coating.
The performance indexes of the architectural coating for indirectly reducing carbon emission prepared by the embodiment are shown in table 1.
Example 2
The building coating for indirectly reducing carbon emission comprises the following raw materials in parts by weight: 12 parts of nano forsterite powder, 22 parts of quicklime, 15 parts of nano far-infrared titanium dioxide, 6 parts of aerogel (3 parts of nano zinc oxide-loaded cellulose aerogel and 3 parts of amino modified silica aerogel), 12 parts of nano heat-dissipating ceramic powder, 4 parts of modified graphene oxide/carbon nanotube composite material, 25 parts of acrylic emulsion, 2 parts of dipropylene glycol methyl ether, and 2 parts of auxiliary agent (0.5 part of polyvinyl alcohol, 0.5 part of organic silicon defoamer, 0.5 part of polyoxyethylene alkylphenol ether and 0.5 part of carboxymethyl cellulose);
the procedure of this example is the same as example 1, and the performance indexes of the architectural coating with indirectly reduced carbon emission are shown in Table 1.
Example 3
The building coating for indirectly reducing carbon emission comprises the following raw materials in parts by weight: 20 parts of nano forsterite powder, 25 parts of quicklime, 9 parts of nano far infrared titanium dioxide, 5 parts of aerogel (4 parts of nano zinc oxide-loaded cellulose aerogel and 1 part of amino modified silica aerogel), 8 parts of nano heat dissipation ceramic powder, 3 parts of modified graphene oxide/carbon nanotube composite material, 40 parts of acrylic emulsion, 5 parts of dipropylene glycol butyl ether, and 3 parts of auxiliary agent (1 part of polyvinyl alcohol, 1 part of organic silicon defoamer, 0.5 part of polyoxyethylene fatty alcohol ether and 0.5 part of carboxyethyl cellulose);
the procedure of this example is the same as example 1, and the performance indexes of the architectural coating with indirectly reduced carbon emission are shown in Table 1.
Example 4
The building coating for indirectly reducing carbon emission comprises the following raw materials in parts by weight: 18 parts of nano forsterite powder, 20 parts of quicklime, 15 parts of nano far infrared titanium dioxide, 8 parts of aerogel (5 parts of nano zinc oxide-loaded cellulose aerogel and 3 parts of amino modified silica aerogel), 8 parts of nano heat dissipation ceramic powder, 6 parts of modified graphene oxide/carbon nanotube composite material, 30 parts of pure acrylic emulsion, 4 parts of dipropylene glycol butyl ether, and 3 parts of auxiliary agent (1 part of polyoxyethylene, 1 part of organic silicon defoamer, 0.5 part of polyoxyethylene alkylphenol ether and 0.5 part of carboxypropyl cellulose);
the procedure of this example is the same as example 1, and the performance indexes of the architectural coating with indirectly reduced carbon emission are shown in Table 1.
Example 5
The building coating for indirectly reducing carbon emission comprises the following raw materials in parts by weight: 12 parts of nano forsterite powder, 30 parts of quicklime, 11 parts of nano far infrared titanium dioxide, 6 parts of aerogel (4 parts of nano zinc oxide-loaded cellulose aerogel and 2 parts of amino modified silica aerogel), 10 parts of nano heat-dissipating ceramic powder, 2 parts of modified graphene oxide/carbon nanotube composite material, 20 parts of pure acrylic emulsion, 3 parts of dipropylene glycol butyl ether, and 3 parts of auxiliary agent (1 part of polyoxyethylene, 1 part of polyether defoamer, 0.5 part of polyoxyethylene fatty alcohol ether and 0.5 part of hydroxypropyl methyl cellulose);
the procedure of this example is the same as example 1, and the performance index of the architectural coating with indirectly reduced carbon emission is shown in Table 1.
Comparative example 1
Essentially the same as example 1, except that comparative example 1 was added as a mixture of unmodified nanocellulose aerogel and silica aerogel.
Comparative example 2
Substantially the same as in example 1 except that comparative example 1 was added with an unmodified graphene oxide/carbon nanotube composite.
Comparative example 3
Substantially the same as in example 1 except that the dispersant added in comparative example 1 was sodium lauryl sulfate.
TABLE 1
Figure BDA0003712165650000121
Figure BDA0003712165650000131
As can be seen from Table 1, the architectural coating capable of indirectly reducing carbon emission prepared by the invention has excellent heat insulation performance, fire resistance, quick drying performance, water resistance and artificial aging resistance, and the coating has strong impact resistance and excellent application prospect.
The present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make various modifications without creative efforts from the above-described conception, and fall within the scope of the present invention.

Claims (9)

1. The building coating for indirectly reducing carbon emission is characterized by comprising the following raw materials in parts by weight: 12-20 parts of nano forsterite powder, 20-30 parts of quick lime, 9-15 parts of nano far infrared titanium dioxide, 4-8 parts of aerogel, 8-12 parts of nano heat dissipation ceramic powder, 2-6 parts of modified graphene oxide/carbon nanotube composite material, 20-40 parts of film forming emulsion, 2-5 parts of film forming auxiliary agent and 2-6 parts of auxiliary agent;
the aerogel is prepared from nano-zinc oxide loaded nano-cellulose aerogel and amino modified silicon dioxide aerogel according to the mass ratio of 3 to 5:1 to 3 are mixed;
the auxiliary agent comprises a dispersing agent, a defoaming agent, a wetting agent and a thickening agent, wherein the dispersing agent is prepared from sodium lignosulfonate and polyethylene oxide according to a mass ratio of 1:1 to 3;
the modified graphene oxide/carbon nanotube composite material is a dichloro s-triazine modified graphene oxide/carbon nanotube composite material, and the preparation steps are as follows: (1) Preparing graphene oxide by using natural crystalline flake graphite as a raw material by adopting an improved Hummer method; (2) acidifying the modified carbon nanotubes; (3) Mixing the acidified modified carbon nano tube with graphene oxide, performing ultrasonic dispersion, filtering the mixed product after ultrasonic treatment by using a polytetrafluoroethylene filter membrane, washing with deionized water and absolute ethyl alcohol respectively in the filtering process, drying, and grinding to obtain a graphene oxide/carbon nano tube composite material; (4) Performing surface modification on the graphene oxide/carbon nano tube composite material by adopting a bisamino silane coupling agent to prepare an amino modified graphene oxide/carbon nano tube composite material; (5) Dissolving trichlorotriazine in absolute ethyl alcohol, stirring and swelling at 0 ℃, dispersing the amino modified graphene oxide/carbon nano tube composite material in the absolute ethyl alcohol, adding triethylamine serving as an acid-binding agent, uniformly mixing, slowly adding the mixed solution into the trichlorotriazine solution at 0 ℃, stirring and reacting, controlling the temperature to be 0-5 ℃ all the time in the reaction process, washing and drying after the reaction is finished, and thus obtaining the dichlorotriazine modified graphene oxide/carbon nano tube composite material.
2. The architectural coating according to claim 1, wherein the amino modified silica aerogel has a particle size of 50 to 90nm, a porosity of 90 to 92 percent and a dry density of 50 to 65kg/m 3 The thermal conductivity coefficient is 0.015 to 0.028W/(m.K); the nano-crystalline cellulose aerogel loaded with nano-zinc oxide has the particle size of 35 to 68nm and the dry density of 40 to 60kg/m 3 。
3. The building paint as claimed in claim 1, wherein the nano forsterite powder has a particle size of 200 to 400nm, and the nano heat-dissipating ceramic powder has a particle size of 500 to 700nm; the particle size of the nano far infrared titanium dioxide is 300-700 nm.
4. The architectural coating according to claim 1, wherein the mass ratio of the graphene oxide to the carbon nanotubes to the trichloro-sym-triazine is 0.5 to 1.5:4 to 6:0.05 to 0.1; the diameter of the carbon nano tube is 15 to 60nm, and the packing density is 15 to 65kg/m 3 (ii) a The bisaminosilane coupling agent is any one of N- (2-aminoethyl) -3-aminopropylmethyldimethoxysilane, N-beta- (aminoethyl) -gamma-aminopropylmethyldimethoxysilane or N- (beta-aminoethyl) -gamma-aminopropyltriethoxysilane.
5. The architectural coating according to claim 1, wherein said defoamer is any one of a silicone defoamer, a polyether defoamer, and an aqueous mineral oil emulsion, said thickener is any one of carboxymethyl cellulose, hydroxyethyl cellulose, and hydroxypropyl methyl cellulose, said coalescent is any one of dipropylene glycol methyl ether, polyvinyl acetate, and dipropylene glycol butyl ether, and said wetting agent is any one of a polyoxyethylene fatty alcohol ether, a polyoxyethylene alkylphenol ether, and a fatty acid ester sulfate.
6. The architectural coating of claim 1, wherein the film forming emulsion is an acrylic emulsion.
7. The architectural coating according to claim 6, wherein the film-forming emulsion is a pure acrylic emulsion having a solid content of 44-50%, a viscosity of 500-1200 Pa s, and a pH value of 7.5-9.0.
8. A method of preparing the architectural coating for indirectly reducing carbon emissions as recited in claim 1, comprising the steps of:
s1, preparing a modified graphene oxide/carbon nanotube composite material;
s2, weighing the modified graphene oxide/carbon nanotube composite material, 1/2 dispersing agent and 1/2 film-forming emulsion according to the formula, adding the materials into water, and stirring and dispersing to obtain modified graphene oxide/carbon nanotube composite material dispersion liquid;
s3, adding quicklime, aerogel, nano far-infrared titanium dioxide, nano heat dissipation ceramic powder, nano forsterite powder and 1/2 dispersing agent into water according to a formula, and stirring to obtain mixed slurry A;
and S4, adding the modified graphene oxide/carbon nano tube composite material dispersion liquid, 1/2 of film-forming emulsion, a film-forming auxiliary agent, a defoaming agent, a wetting agent and a thickening agent into the mixed slurry A, and stirring to obtain the building coating.
9. The preparation method according to claim 8, wherein in step S2, the modified graphene oxide/carbon nanotube composite dispersion liquid is 1.2 to 2.5 mass percent, the stirring rate is 200 to 400r/min, and the stirring time is 10 to 25min; in the step S3, the stirring speed is 200-400 r/min, and the stirring time is 20-35 min; in the step S4, the stirring speed is 600-800 r/min, and the stirring time is 20-45 min.
CN202210733300.5A 2022-06-24 2022-06-24 Building coating for indirectly reducing carbon emission and preparation method thereof Active CN114854263B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210733300.5A CN114854263B (en) 2022-06-24 2022-06-24 Building coating for indirectly reducing carbon emission and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210733300.5A CN114854263B (en) 2022-06-24 2022-06-24 Building coating for indirectly reducing carbon emission and preparation method thereof

Publications (2)

Publication Number Publication Date
CN114854263A CN114854263A (en) 2022-08-05
CN114854263B true CN114854263B (en) 2023-03-31

Family

ID=82625755

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210733300.5A Active CN114854263B (en) 2022-06-24 2022-06-24 Building coating for indirectly reducing carbon emission and preparation method thereof

Country Status (1)

Country Link
CN (1) CN114854263B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115895323B (en) * 2022-11-22 2024-03-01 江西铜业技术研究院有限公司 Organic solvent compatible carbon nanotube dispersion liquid and preparation method thereof
CN117683417B (en) * 2023-11-30 2024-07-05 南通科顺建筑新材料有限公司 Water-dispersible biomass aerogel coating and preparation method thereof

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108610815A (en) * 2016-12-28 2018-10-02 刘朝辉 Aerosil composite thermal barrier coatings and preparation method thereof
CN107381558B (en) * 2017-08-20 2019-06-25 江苏百年门地家居科技有限公司 A kind of preparation method and high-electroconductivity graphene film of high-electroconductivity graphene film
CN108165134A (en) * 2017-12-28 2018-06-15 新奥石墨烯技术有限公司 Nano-sized carbon enhancing high-molecular coating of resistance to nuclear radiation and preparation method thereof
CN110339790A (en) * 2019-07-26 2019-10-18 南京工业大学 Spherical amino modified silica aerogel and preparation method thereof
CN112552754A (en) * 2020-12-10 2021-03-26 哈工大机器人(中山)无人装备与人工智能研究院 Preparation method of graphene heat dissipation coating
CN113801527A (en) * 2021-09-16 2021-12-17 长沙民德消防工程涂料有限公司 Water-based transparent glass heat-insulating coating and preparation method thereof
CN114230254A (en) * 2021-12-28 2022-03-25 王孝红 Environment-friendly water-based nano thermal insulation material and preparation method thereof

Also Published As

Publication number Publication date
CN114854263A (en) 2022-08-05

Similar Documents

Publication Publication Date Title
CN114854263B (en) Building coating for indirectly reducing carbon emission and preparation method thereof
CN104277633B (en) A kind of nanometer heat isolation paint
CN103289450B (en) A kind of Carbon nanotube inorganic paint and using method thereof
CN103450773A (en) Epoxy acrylate modified high anticorrosion heat insulation paint containing porous ceramic addictive and production method thereof
CN108530011B (en) Silicon aerogel fireproof, waterproof and environment-friendly heat-preservation paste
CN113956862B (en) Guanidine gum fracturing fluid gel capable of reducing pH dependence, guanidine gum fracturing fluid system, and preparation method and application thereof
WO2023039939A1 (en) Nano zirconium phosphate-based flame-retardant bacteriostatic agent and intumescent fireproof antibacterial coating prepared therefrom
CN114806300B (en) Metal surface composite SiO2 aerogel coating and preparation method thereof
CN115073981A (en) Preparation method of water-based nano heat-insulating coating
CN103342947A (en) Novel two-dimensional nano paint
US11732140B2 (en) Environment-friendly wall paint for building and preparation method thereof
WO2019104816A1 (en) Method for preparing enhanced environmentally friendly diatom ooze coating
CN108753058A (en) A kind of daylight reflective heat-insulation paint and preparation method thereof
CN109456630A (en) The nano flame retardant fireproof coating of specific function
CN110964426A (en) Ultraviolet-resistant vehicle paint and preparation method thereof
CN115011195A (en) Water-based heat-insulation reflective composite coating with low heat conductivity coefficient and preparation process thereof
CN113621258B (en) Fireproof flame-retardant ecological coating and preparation method thereof
CN108410281A (en) A kind of water nano compound heat-insulation coating and preparation method thereof
CN109266148A (en) A kind of energy conservation and environmental protection building coating and preparation method thereof
CN109266143A (en) Water nano insulation thin layer integrated material
CN114426784A (en) Nano inorganic coating for exterior wall and preparation method thereof
CN110229642B (en) Preparation method of waterproof flame-retardant adhesive for fiberboard
CN110591442B (en) Preparation method of water-based thickening agent
CN108822463B (en) Gel carbon nanotube and preparation method thereof
CN1185311C (en) Preparation method of UV light stabilizing agent for water building outer wall coating material

Legal Events

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