CN111040547A - Thermal insulation aerogel coating and preparation method thereof - Google Patents

Thermal insulation aerogel coating and preparation method thereof Download PDF

Info

Publication number
CN111040547A
CN111040547A CN201911376835.6A CN201911376835A CN111040547A CN 111040547 A CN111040547 A CN 111040547A CN 201911376835 A CN201911376835 A CN 201911376835A CN 111040547 A CN111040547 A CN 111040547A
Authority
CN
China
Prior art keywords
coating
aerogel
thermal insulation
heat
sio
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.)
Pending
Application number
CN201911376835.6A
Other languages
Chinese (zh)
Inventor
***
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.)
Suzhou Shengdeyi Energy Conservation And Environmental Protection Technology Co Ltd
Original Assignee
Suzhou Shengdeyi Energy Conservation And 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 Suzhou Shengdeyi Energy Conservation And Environmental Protection Technology Co Ltd filed Critical Suzhou Shengdeyi Energy Conservation And Environmental Protection Technology Co Ltd
Priority to CN201911376835.6A priority Critical patent/CN111040547A/en
Publication of CN111040547A publication Critical patent/CN111040547A/en
Pending legal-status Critical Current

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
    • 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
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • 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
    • 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
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C08K2003/2241—Titanium dioxide

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)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Paints Or Removers (AREA)
  • Thermal Insulation (AREA)

Abstract

The invention discloses a heat-insulating aerogel coating and a preparation method thereof, which are applicable to the field of industrial heat exchange2The reflective coating comprises acrylate emulsion, titanium dioxide, hollow glass beads, a dispersing agent, hydroxypropyl methyl cellulose, a silane coupling agent and deionized water. The preparation method comprises the following steps: preparing a heat insulation coating and preparing a reflection coating. The invention provides heat insulation and preservationThe aerogel coating realizes reflection type heat insulation by reflecting sunlight and emitting far infrared through the hollow glass beads and the titanium dioxide in the reflective coating, and SiO passes through the heat insulation coating2The aerogel realizes obstructive heat insulation and improves the heat insulation effect. According to the preparation method of the heat-insulating aerogel coating, the prepared heat-insulating coating and the prepared reflective coating are strong in binding force and are not easy to fall off.

Description

Thermal insulation aerogel coating and preparation method thereof
Technical Field
The invention belongs to the field of coatings, and particularly relates to a heat-insulating aerogel coating and a preparation method thereof.
Background
The heat insulation coating prepared by drying the heat insulation coating reduces the temperature of the coating and the internal environment of the coating in a mode of preventing heat conduction, so that the heat insulation coating can be widely applied to the field of industrial heat exchange to realize heat insulation and is used in pipeline industry to reduce heat dissipation and improve energy utilization rate. The heat insulation coating mainly depends on the low heat conductivity of the heat insulation filler and the heat transfer resistance. When the pipeline is in an outdoor condition, the heat insulation coating can directly bear the irradiation of sunlight, and the high-reflectivity filler is added into the heat insulation coating, so that the radiation heat transfer of the heat insulation coating can be reduced. Glass beads are often added into the heat insulation coating with the reflection function, and the single-layer heat insulation coating is obtained after the heat insulation coating is dried. Because the filler with low heat conductivity and the glass beads are mixed at the same time, the content of the filler with low heat conductivity in the heat-insulating coating is reduced, and the capability of heat transfer resistance is reduced.
Disclosure of Invention
In order to solve the technical problems, the invention provides a thermal insulation aerogel coating and a preparation method thereof, aiming at enabling the coating to have the functions of reflection type thermal insulation and obstructive thermal insulation.
In order to achieve the purpose, the technical scheme of the invention is as follows: the aerogel coating for heat insulation comprises a heat insulation coating made of heat insulation coating and a reflection coating made of reflection coating, wherein the heat insulation coating comprises SiO in percentage by weight223-35% of aerogel slurry, 30-40% of waterborne polyurethane resin, 1-10% of auxiliary agent and 20-30% of deionized water, wherein the reflective coating comprises 25-40% of acrylate emulsion, 10-25% of titanium dioxide, 20-30% of hollow glass beads, 0.5-1% of dispersing agent, 1-2% of hydroxypropyl methyl cellulose, 2-3% of silane coupling agent and 18-25% of deionized water according to weight percentage.
Preferably, the thermal insulation coating comprises SiO in percentage by weight223% -30% of aerogel slurry, 35% -40% of waterborne polyurethane resin, 2% -8% of auxiliary agent and 23% -30% of deionized water.
Preferably, the auxiliary agent of the heat insulation coating comprises a defoaming agent, a dispersing agent, a leveling agent and a thickening agent.
Preferably, the thickness ratio of the thermal barrier coating to the reflective coating is 3:1 to 5: 1.
Preferably, the average particle size of the hollow glass beads in the reflective coating is 600-1000 nm.
The invention also discloses a preparation method of the heat-insulating aerogel coating, which comprises the following steps:
s1, preparing a thermal insulation coating;
s11 preparation of SiO2An aerogel;
s12 preparation of SiO by silane coupling agent2Modifying the aerogel;
s13, modifying the SiO2Mixing aerogel and deionized water, stirring, adding a dispersing agent, and performing ultrasonic dispersion to obtain SiO2An aerogel slurry;
s13, mixing SiO2Mixing and dispersing aerogel, waterborne polyurethane resin and an auxiliary agent to obtain a heat-insulating coating;
s14, coating and drying the heat insulation coating to obtain a heat insulation coating;
s2, preparing a reflective coating:
s21, mixing and stirring the acrylate emulsion, the titanium dioxide, the hollow glass beads, the dispersing agent and the deionized water for 10-60min, then adding the hydroxypropyl methyl cellulose and the silane coupling agent, and continuously stirring to obtain the reflective coating;
and S22, applying the reflective coating to the thermal insulation coating before the thermal insulation coating is completely dried, and drying to obtain the reflective coating.
Preferably, in the step S11, ethyl orthosilicate, deionized water and ethanol are mixed uniformly, then diluted hydrochloric acid solution is added to adjust the pH value to 2-4, ammonia water is added to adjust the pH value to 6-7 after stirring, and standing is carried out after stirring to form gel; adding ethanol into the gel, aging to obtain wet gel, and supercritical drying the wet gel to obtain SiO2An aerogel.
Preferably, the silane coupling agent in S12 is KH 550.
Preferably, the coating manner in S14 is spraying.
Preferably, the heat insulation coating is coated with a reflective coating after being dried for 20-60 min.
The invention has the beneficial effects that: the heat-insulating aerogel coating provided by the invention is prepared by reflecting hollow glass beads and titanium dioxide in the reflective coatingReflecting heat insulation by sunlight and far infrared ray, and SiO coated with the heat insulation coating2The aerogel realizes obstructive heat insulation and improves the heat insulation effect. According to the preparation method of the heat-insulating aerogel coating, the prepared heat-insulating coating and the prepared reflective coating are strong in binding force and are not easy to fall off.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments.
Example one
The embodiment provides a thermal insulation aerogel coating, which comprises a thermal insulation coating made of thermal insulation coating and a reflective coating made of reflective coating. The heat insulation coating comprises SiO in percentage by weight223% of aerogel slurry, 40% of waterborne polyurethane resin, 7% of auxiliary agent and 30% of deionized water. The reflective coating comprises, by weight, 25% of an acrylate emulsion, 18% of titanium dioxide, 30% of hollow glass beads, 1% of a dispersant, 2% of hydroxypropyl methyl cellulose, 3% of a silane coupling agent and 21% of deionized water.
The auxiliary agent of the heat insulation coating comprises a defoaming agent, a dispersing agent, a flatting agent and a thickening agent. The thickness ratio of the thermal barrier coating to the reflective coating was 5: 1. The average particle size of the hollow glass beads in the reflective coating is 600-1000 nanometers.
The embodiment also provides a preparation method of the heat-insulating aerogel coating, which comprises the following steps:
s1, preparing a thermal insulation coating;
s11 preparation of SiO2Aerogel: uniformly mixing ethyl orthosilicate, deionized water and ethanol, adding a dilute hydrochloric acid solution to adjust the pH value to be 4, stirring, adding ammonia water to adjust the pH value to be 7, stirring, and standing to form gel; adding ethanol into the gel, aging to obtain wet gel, and supercritical drying the wet gel to obtain SiO2An aerogel.
S12 preparation of SiO by silane coupling agent2Modifying the aerogel, wherein a silane coupling agent in S12 is KH 550;
s13, modifying the SiO2Mixing aerogel and deionized water, stirring, adding dispersant, and ultrasonic separatingDispersing to obtain SiO2An aerogel slurry;
s13, mixing SiO2Mixing and dispersing aerogel, waterborne polyurethane resin and an auxiliary agent to obtain a heat-insulating coating;
s14, coating and drying the heat insulation coating to obtain a heat insulation coating;
s2, preparing a reflective coating:
s21, mixing and stirring the acrylate emulsion, the titanium dioxide, the hollow glass beads, the dispersing agent and the deionized water for 10min, then adding the hydroxypropyl methyl cellulose and the silane coupling agent, and continuously stirring to obtain the reflective coating;
and S22, drying the thermal insulation coating for 60min, and then coating the reflective coating on the thermal insulation coating, wherein the thermal insulation coating is not completely dried, and the reflective coating is obtained after drying.
As a further preferable mode of the above-described means, the coating method in S14 is spray coating.
Example two
The embodiment provides a thermal insulation aerogel coating, which comprises a thermal insulation coating made of thermal insulation coating and a reflective coating made of reflective coating. The heat insulation coating comprises SiO in percentage by weight235% of aerogel slurry, 35% of waterborne polyurethane resin, 2% of auxiliary agent and 30% of deionized water. The reflective coating comprises, by weight, 40% of an acrylate emulsion, 10% of titanium dioxide, 25% of hollow glass beads, 0.5% of a dispersant, 1.5% of hydroxypropyl methyl cellulose, 2% of a silane coupling agent and 21% of deionized water.
The auxiliary agent of the heat insulation coating comprises a defoaming agent, a dispersing agent, a flatting agent and a thickening agent. The thickness ratio of the thermal barrier coating to the reflective coating was 4: 1. The average particle size of the hollow glass beads in the reflective coating is 600-1000 nanometers.
The embodiment also provides a preparation method of the heat-insulating aerogel coating, which comprises the following steps:
s1, preparing a thermal insulation coating;
s11 preparation of SiO2Aerogel: mixing ethyl orthosilicate, deionized water and ethanol uniformly, adding dilute hydrochloric acid solution to adjust the pH value to be 4, and stirringThen adding ammonia water to adjust the pH value to 6, stirring and standing to form gel; adding ethanol into the gel, aging to obtain wet gel, and supercritical drying the wet gel to obtain SiO2An aerogel.
S12 preparation of SiO by silane coupling agent2Modifying the aerogel, wherein a silane coupling agent in S12 is KH 550;
s13, modifying the SiO2Mixing aerogel and deionized water, stirring, adding a dispersing agent, and performing ultrasonic dispersion to obtain SiO2An aerogel slurry;
s13, mixing SiO2Mixing and dispersing aerogel, waterborne polyurethane resin and an auxiliary agent to obtain a heat-insulating coating;
s14, coating and drying the heat insulation coating to obtain a heat insulation coating;
s2, preparing a reflective coating:
s21, mixing and stirring the acrylate emulsion, the titanium dioxide, the hollow glass beads, the dispersing agent and the deionized water for 60min, then adding the hydroxypropyl methyl cellulose and the silane coupling agent, and continuously stirring to obtain the reflective coating;
and S22, drying the thermal insulation coating for 40min, and then coating the reflective coating on the thermal insulation coating, wherein the thermal insulation coating is not completely dried, and the reflective coating is obtained after drying the reflective coating.
As a further preferable mode of the above-described means, the coating method in S14 is spray coating.
EXAMPLE III
The embodiment provides a thermal insulation aerogel coating, which comprises a thermal insulation coating made of thermal insulation coating and a reflective coating made of reflective coating. The heat insulation coating comprises SiO in percentage by weight230% of aerogel slurry, 40% of waterborne polyurethane resin, 10% of auxiliary agent and 20% of deionized water. The reflective coating comprises 33% of acrylate emulsion, 25% of titanium dioxide, 20% of hollow glass beads, 0.5% of dispersing agent, 1% of hydroxypropyl methyl cellulose, 2.5% of silane coupling agent and 18% of deionized water in percentage by weight.
The auxiliary agent of the heat insulation coating comprises a defoaming agent, a dispersing agent, a flatting agent and a thickening agent. The thickness ratio of the thermal barrier coating to the reflective coating was 3: 1. The average particle size of the hollow glass beads in the reflective coating is 600-1000 nanometers.
The embodiment also provides a preparation method of the heat-insulating aerogel coating, which comprises the following steps:
s1, preparing a thermal insulation coating;
s11 preparation of SiO2Aerogel: uniformly mixing ethyl orthosilicate, deionized water and ethanol, adding a dilute hydrochloric acid solution to adjust the pH value to 3, stirring, adding ammonia water to adjust the pH value to 6, stirring, and standing to form gel; adding ethanol into the gel, aging to obtain wet gel, and supercritical drying the wet gel to obtain SiO2An aerogel.
S12 preparation of SiO by silane coupling agent2Modifying the aerogel, wherein a silane coupling agent in S12 is KH 550;
s13, modifying the SiO2Mixing aerogel and deionized water, stirring, adding a dispersing agent, and performing ultrasonic dispersion to obtain SiO2An aerogel slurry;
s13, mixing SiO2Mixing and dispersing aerogel, waterborne polyurethane resin and an auxiliary agent to obtain a heat-insulating coating;
s14, coating and drying the heat insulation coating to obtain a heat insulation coating;
s2, preparing a reflective coating:
s21, mixing and stirring the acrylate emulsion, the titanium dioxide, the hollow glass beads, the dispersing agent and the deionized water for 30min, then adding the hydroxypropyl methyl cellulose and the silane coupling agent, and continuously stirring to obtain the reflective coating;
and S22, drying the thermal insulation coating for 30min, and then coating the reflective coating on the thermal insulation coating, wherein the thermal insulation coating is not completely dried, and the reflective coating is obtained after drying.
As a further preferable mode of the above-described means, the coating method in S14 is spray coating.
Example four
The embodiment provides a thermal insulation aerogel coating, which comprises a thermal insulation coating made of thermal insulation coating and a reflective coating made of reflective coating. The heat insulation coating comprises SiO in percentage by weight2Aerogel slurry35% of material, 30% of waterborne polyurethane resin, 10% of auxiliary agent and 25% of deionized water. The reflective coating comprises, by weight, 32% of an acrylate emulsion, 12% of titanium dioxide, 26% of hollow glass beads, 1% of a dispersant, 2% of hydroxypropyl methyl cellulose, 2% of a silane coupling agent and 25% of deionized water.
The auxiliary agent of the heat insulation coating comprises a defoaming agent, a dispersing agent, a flatting agent and a thickening agent. The thickness ratio of the thermal barrier coating to the reflective coating was 4: 1. The average particle size of the hollow glass beads in the reflective coating is 600-1000 nanometers.
The embodiment also provides a preparation method of the heat-insulating aerogel coating, which comprises the following steps:
s1, preparing a thermal insulation coating;
s11 preparation of SiO2Aerogel: uniformly mixing ethyl orthosilicate, deionized water and ethanol, adding a dilute hydrochloric acid solution to adjust the pH value to be 4, stirring, adding ammonia water to adjust the pH value to be 7, stirring, and standing to form gel; adding ethanol into the gel, aging to obtain wet gel, and supercritical drying the wet gel to obtain SiO2An aerogel.
S12 preparation of SiO by silane coupling agent2Modifying the aerogel, wherein a silane coupling agent in S12 is KH 550;
s13, modifying the SiO2Mixing aerogel and deionized water, stirring, adding a dispersing agent, and performing ultrasonic dispersion to obtain SiO2An aerogel slurry;
s13, mixing SiO2Mixing and dispersing aerogel, waterborne polyurethane resin and an auxiliary agent to obtain a heat-insulating coating;
s14, coating and drying the heat insulation coating to obtain a heat insulation coating;
s2, preparing a reflective coating:
s21, mixing and stirring the acrylate emulsion, the titanium dioxide, the hollow glass beads, the dispersing agent and the deionized water for 30min, then adding the hydroxypropyl methyl cellulose and the silane coupling agent, and continuously stirring to obtain the reflective coating;
and S22, drying the thermal insulation coating for 20min, and then coating the reflective coating on the thermal insulation coating, wherein the thermal insulation coating is not completely dried, and the reflective coating is obtained after drying.
As a further preferable mode of the above-described means, the coating method in S14 is spray coating.
EXAMPLE five
The embodiment provides a thermal insulation aerogel coating, which comprises a thermal insulation coating made of thermal insulation coating and a reflective coating made of reflective coating. The heat insulation coating comprises SiO in percentage by weight233% of aerogel slurry, 36% of waterborne polyurethane resin, 8% of auxiliary agent and 23% of deionized water. The reflective coating comprises, by weight, 25% of acrylate emulsion, 25% of titanium dioxide, 23% of hollow glass beads, 1% of a dispersing agent, 1% of hydroxypropyl methyl cellulose, 3% of a silane coupling agent and 22% of deionized water.
The auxiliary agent of the heat insulation coating comprises a defoaming agent, a dispersing agent, a flatting agent and a thickening agent. The thickness ratio of the thermal barrier coating to the reflective coating was 3: 1. The average particle size of the hollow glass beads in the reflective coating is 600-1000 nanometers.
The embodiment also provides a preparation method of the heat-insulating aerogel coating, which comprises the following steps:
s1, preparing a thermal insulation coating;
s11 preparation of SiO2Aerogel: uniformly mixing ethyl orthosilicate, deionized water and ethanol, adding a dilute hydrochloric acid solution to regulate the pH value to be 2, stirring, adding ammonia water to regulate the pH value to be 7, stirring, and standing to form gel; adding ethanol into the gel, aging to obtain wet gel, and supercritical drying the wet gel to obtain SiO2An aerogel.
S12 preparation of SiO by silane coupling agent2Modifying the aerogel, wherein a silane coupling agent in S12 is KH 550;
s13, modifying the SiO2Mixing aerogel and deionized water, stirring, adding a dispersing agent, and performing ultrasonic dispersion to obtain SiO2An aerogel slurry;
s13, mixing SiO2Mixing and dispersing aerogel, waterborne polyurethane resin and an auxiliary agent to obtain a heat-insulating coating;
s14, coating and drying the heat insulation coating to obtain a heat insulation coating;
s2, preparing a reflective coating:
s21, mixing and stirring the acrylate emulsion, the titanium dioxide, the hollow glass beads, the dispersing agent and the deionized water for 50min, then adding the hydroxypropyl methyl cellulose and the silane coupling agent, and continuously stirring to obtain the reflective coating;
and S22, drying the thermal insulation coating for 55min, and then coating the reflective coating on the thermal insulation coating, wherein the thermal insulation coating is not completely dried, and the reflective coating is obtained after drying.
As a further preferable mode of the above-described means, the coating method in S14 is spray coating.
In the present invention, the heat-insulating component of the heat-insulating coating material is SiO2An aerogel. Aerogels are sol-gel derived solid materials with a porosity of about 80% to 99.8%. Due to SiO2The porous network structure of the aerogel, the voids are filled with air, so that SiO2The aerogel has a very low density and is SiO2The thermal conductivity of the aerogel is very small. When the test conditions are normal temperature and normal pressure, SiO2The thermal conductivity coefficient of the aerogel is only 0.013W/(m/k), and the aerogel is a material with very good thermal insulation performance at present. The aqueous polyurethane resin is a film-forming substance.
The reflective components in the reflective coating are hollow glass microspheres and titanium dioxide. Hydroxypropyl methylcellulose is useful for thickening. When the thermal insulation coating is not completely dried, the reflective coating is coated, and part of the reflective coating leaks into the thermal insulation coating, so that the bonding force of the reflective coating and the thermal insulation coating is good. However, because the thermal insulation coating uses the water-based paint, a water film exists on the surface layer of the thermal insulation coating before the thermal insulation coating is completely dried, the silane coupling agent can replace the water film through surface chemical reaction, so that the infiltration of the reflective paint and the thermal insulation coating is increased, and the SiO in the reflective paint and the thermal insulation coating is ensured2And (4) combining the aerogels.
The thermal insulation effect of the coating of the invention is tested as follows:
Figure BDA0002341194500000101
the test conditions of the thermal insulation test are as follows: the aerogel coating with heat insulation and heat preservation is coated on a metal plate, and the coating thickness is 3mm, 5mm and 10mm respectively. The high temperature furnace is heated to 190 ℃, and the simulated air temperature is 190 ℃. And (3) punching the test metal plate to the coating, respectively contacting a thermocouple inside and outside the coating to measure the temperature, and testing the surface temperature of the metal plate and the outer surface temperature of the coating. The temperature is measured every half hour, and the average temperature is taken.
The coating is coated on a pipeline, after three months in winter, the coating is well adhered after being washed by a high-pressure water gun, and the coating is not damaged.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent flow transformations made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. The aerogel coating with the heat insulation and heat preservation functions is characterized by comprising a heat insulation coating made of heat insulation coating and a reflection coating made of reflection coating, wherein the heat insulation coating comprises SiO in percentage by weight223-35% of aerogel slurry, 30-40% of waterborne polyurethane resin, 1-10% of auxiliary agent and 20-30% of deionized water, wherein the reflective coating comprises 25-40% of acrylate emulsion, 10-25% of titanium dioxide, 20-30% of hollow glass beads, 0.5-1% of dispersing agent, 1-2% of hydroxypropyl methyl cellulose, 2-3% of silane coupling agent and 18-25% of deionized water according to weight percentage.
2. The aerogel coating for thermal insulation of claim 1, wherein the thermal insulation coating comprises SiO in percentage by weight223% -30% of aerogel slurry, 35% -40% of waterborne polyurethane resin, 2% -8% of auxiliary agent and 23% -30% of deionized water.
3. The aerogel coating for thermal insulation and heat preservation according to claim 1, wherein the auxiliary agent of the thermal insulation coating comprises a defoaming agent, a dispersing agent, a leveling agent and a thickening agent.
4. The thermally insulated aerogel coating of claim 1, wherein the thickness ratio of the thermal barrier coating to the reflective coating is 3:1 to 5: 1.
5. The aerogel coating for thermal insulation and heat preservation according to claim 1, wherein the average particle size of the hollow glass beads in the reflective coating is 600-1000 nm.
6. A method of preparing an aerogel coating for thermal insulation according to any of claims 1 to 5, comprising the steps of:
s1 preparation of thermal barrier coating
S11 preparation of SiO2An aerogel;
s12 preparation of SiO by silane coupling agent2Modifying the aerogel;
s13, modifying the SiO2Mixing aerogel and deionized water, stirring, adding a dispersing agent, and performing ultrasonic dispersion to obtain SiO2An aerogel slurry;
s13, mixing SiO2Mixing and dispersing aerogel, waterborne polyurethane resin and an auxiliary agent to obtain a heat-insulating coating;
s14, coating and drying the heat insulation coating to obtain a heat insulation coating;
s2, preparing a reflective coating:
s21, mixing and stirring the acrylate emulsion, the titanium dioxide, the hollow glass beads, the dispersing agent and the deionized water for 10-60min, then adding the hydroxypropyl methyl cellulose and the silane coupling agent, and continuously stirring to obtain the reflective coating;
and S22, applying the reflective coating to the thermal insulation coating before the thermal insulation coating is completely dried, and drying to obtain the reflective coating.
7. The method for preparing the aerogel coating with the heat insulation and preservation functions as claimed in claim 6, wherein in S11, ethyl orthosilicate, deionized water and ethanol are mixed uniformly, then diluted hydrochloric acid solution is added to adjust the pH value to 2-4,adding ammonia water after stirring to adjust the pH value to 6-7, and standing after stirring to form gel; adding ethanol into the gel, aging to obtain wet gel, and supercritical drying the wet gel to obtain SiO2An aerogel.
8. The method for preparing an aerogel coating for thermal insulation according to claim 6, wherein the silane coupling agent in S12 is KH 550.
9. The method for preparing aerogel coating for thermal insulation according to claim 6, wherein the coating manner in S14 is spraying.
10. The method for preparing the aerogel coating for thermal insulation according to claim 6, wherein the thermal insulation coating is coated with a reflective coating after being dried for 20-60 min.
CN201911376835.6A 2019-12-27 2019-12-27 Thermal insulation aerogel coating and preparation method thereof Pending CN111040547A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911376835.6A CN111040547A (en) 2019-12-27 2019-12-27 Thermal insulation aerogel coating and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911376835.6A CN111040547A (en) 2019-12-27 2019-12-27 Thermal insulation aerogel coating and preparation method thereof

Publications (1)

Publication Number Publication Date
CN111040547A true CN111040547A (en) 2020-04-21

Family

ID=70239168

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911376835.6A Pending CN111040547A (en) 2019-12-27 2019-12-27 Thermal insulation aerogel coating and preparation method thereof

Country Status (1)

Country Link
CN (1) CN111040547A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111961385A (en) * 2020-08-25 2020-11-20 山西宏厦建筑工程第三有限公司 Aerogel heat preservation and insulation system and construction process thereof
CN112341658A (en) * 2020-11-17 2021-02-09 国佳新材湖北环保凝胶产业园有限公司 Preparation method of aerogel heat insulation film
CN112574656A (en) * 2020-11-30 2021-03-30 盐城工学院 Preparation method of silicon dioxide-polyurethane composite aerogel heat insulation coating
CN112592442A (en) * 2020-12-15 2021-04-02 湖南航天三丰科工有限公司 Preparation method of modified silicon dioxide emulsion and reflective heat-insulating coating
CN113372776A (en) * 2021-06-21 2021-09-10 江苏脒诺甫纳米材料有限公司 Building sun-proof heat-insulating coating and preparation method thereof
CN113737517A (en) * 2021-06-16 2021-12-03 苏州越世纺织品有限公司 Preparation process of metal high-brightness-level double-color flame-retardant reflective cloth
CN113832776A (en) * 2021-08-13 2021-12-24 江苏劲源新能源科技有限公司 Highland barley paper for lithium battery packaging and preparation method thereof
CN114133810A (en) * 2021-09-03 2022-03-04 中联重科股份有限公司 Coating composition with reflection heat insulation function, application of coating composition, suspension arm with coating and preparation method of suspension arm
CN114163883A (en) * 2021-12-09 2022-03-11 中国铝业股份有限公司 Novel heat-insulating coating of aluminum cell cover plate, coating and preparation method thereof
CN115785722A (en) * 2022-11-14 2023-03-14 亚士创能科技(上海)股份有限公司 Thick-batch anti-cracking heat-insulation putty, preparation method thereof and heat-insulation system
CN115819017A (en) * 2022-11-21 2023-03-21 江苏安珈新材料科技有限公司 Aerogel heat insulation material with opacifier coating on surface and preparation method thereof

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101210146A (en) * 2006-12-30 2008-07-02 财团法人工业技术研究院 Composition of reflective insulation dope, double-layer heat insulation dope and preparing method thereof
CN105820690A (en) * 2016-04-25 2016-08-03 孙华杰 Preparation method and application of water-based silicon dioxide aerogel reflective heat insulation coating
CN106084906A (en) * 2016-06-12 2016-11-09 安徽华光光电材料科技集团有限公司 A kind of industrial furnace energy-saving coating system
CN106629750A (en) * 2016-11-09 2017-05-10 中国科学院宁波材料技术与工程研究所 Normal pressure preparation method for transparent silica bulk aerogel
CN106830994A (en) * 2016-12-03 2017-06-13 中国海洋石油总公司 A kind of solar heat reflecting and heat insulating thermal coating structure and preparation method thereof
CN107032735A (en) * 2017-04-24 2017-08-11 北京中电联发科技有限公司 A kind of boiler insulating moulding coating, preparation method and construction method
CN109913007A (en) * 2019-04-02 2019-06-21 北京新时代寰宇科技发展有限公司 Water-soluble SiO2The preparation method and applications of aeroge exterior wall reflective thermal insulation coating

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101210146A (en) * 2006-12-30 2008-07-02 财团法人工业技术研究院 Composition of reflective insulation dope, double-layer heat insulation dope and preparing method thereof
CN105820690A (en) * 2016-04-25 2016-08-03 孙华杰 Preparation method and application of water-based silicon dioxide aerogel reflective heat insulation coating
CN106084906A (en) * 2016-06-12 2016-11-09 安徽华光光电材料科技集团有限公司 A kind of industrial furnace energy-saving coating system
CN106629750A (en) * 2016-11-09 2017-05-10 中国科学院宁波材料技术与工程研究所 Normal pressure preparation method for transparent silica bulk aerogel
CN106830994A (en) * 2016-12-03 2017-06-13 中国海洋石油总公司 A kind of solar heat reflecting and heat insulating thermal coating structure and preparation method thereof
CN107032735A (en) * 2017-04-24 2017-08-11 北京中电联发科技有限公司 A kind of boiler insulating moulding coating, preparation method and construction method
CN109913007A (en) * 2019-04-02 2019-06-21 北京新时代寰宇科技发展有限公司 Water-soluble SiO2The preparation method and applications of aeroge exterior wall reflective thermal insulation coating

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111961385A (en) * 2020-08-25 2020-11-20 山西宏厦建筑工程第三有限公司 Aerogel heat preservation and insulation system and construction process thereof
CN112341658A (en) * 2020-11-17 2021-02-09 国佳新材湖北环保凝胶产业园有限公司 Preparation method of aerogel heat insulation film
CN112574656A (en) * 2020-11-30 2021-03-30 盐城工学院 Preparation method of silicon dioxide-polyurethane composite aerogel heat insulation coating
CN112592442A (en) * 2020-12-15 2021-04-02 湖南航天三丰科工有限公司 Preparation method of modified silicon dioxide emulsion and reflective heat-insulating coating
CN113737517A (en) * 2021-06-16 2021-12-03 苏州越世纺织品有限公司 Preparation process of metal high-brightness-level double-color flame-retardant reflective cloth
CN113372776A (en) * 2021-06-21 2021-09-10 江苏脒诺甫纳米材料有限公司 Building sun-proof heat-insulating coating and preparation method thereof
CN113372776B (en) * 2021-06-21 2022-02-25 江苏脒诺甫纳米材料有限公司 Building sun-proof heat-insulating coating and preparation method thereof
CN113832776A (en) * 2021-08-13 2021-12-24 江苏劲源新能源科技有限公司 Highland barley paper for lithium battery packaging and preparation method thereof
CN114133810A (en) * 2021-09-03 2022-03-04 中联重科股份有限公司 Coating composition with reflection heat insulation function, application of coating composition, suspension arm with coating and preparation method of suspension arm
CN114163883A (en) * 2021-12-09 2022-03-11 中国铝业股份有限公司 Novel heat-insulating coating of aluminum cell cover plate, coating and preparation method thereof
CN115785722A (en) * 2022-11-14 2023-03-14 亚士创能科技(上海)股份有限公司 Thick-batch anti-cracking heat-insulation putty, preparation method thereof and heat-insulation system
CN115819017A (en) * 2022-11-21 2023-03-21 江苏安珈新材料科技有限公司 Aerogel heat insulation material with opacifier coating on surface and preparation method thereof

Similar Documents

Publication Publication Date Title
CN111040547A (en) Thermal insulation aerogel coating and preparation method thereof
CN106752561A (en) A kind of aeroge compound heat-insulation coating and preparation method thereof
CN108690435B (en) Water-based pure acrylic acid reflective heat-insulating coating and preparation method thereof
WO2017028470A1 (en) Full color range reflective heat insulating coating system for construction and preparation method thereof
CN107201067A (en) A kind of thermostable heat-isolating coating and preparation method thereof
CN112745726A (en) High-performance organic-inorganic composite heat-reflection waterproof coating, and preparation method and application thereof
CN110819184A (en) Waterproof heat-preservation reflective heat-insulation multifunctional water-based paint and preparation method and application thereof
CN110982360B (en) Composite heat-insulating coating for building exterior wall and preparation method thereof
WO2022148465A1 (en) Aerogel coating and preparation method therefor, and aerogel coating layer and preparation method therefor
CN101906261A (en) Thermal insulating glass coating with high leveling property
CN107236388A (en) A kind of thermostable heat-isolating coating and preparation method thereof
CN111875337A (en) Inorganic cooling coating and preparation method thereof
CN110357133A (en) A kind of preparation method of high intensity block alumina aerogels
CN114605875B (en) Double-layer organic-inorganic composite building energy-saving coating material and preparation method thereof
CN113801527A (en) Water-based transparent glass heat-insulating coating and preparation method thereof
CN110511638B (en) Functional heat-insulating environment-friendly coating material and preparation method thereof
CN108864869B (en) Interior wall coating with temperature-adjusting and energy-storing functions and preparation method thereof
CN103146290B (en) Preparation method for aqueous composite thermal insulation coating
CN110819247A (en) Light-transmitting heat-insulating film for energy-saving building and preparation method thereof
TWI613240B (en) High reflectance heat insulation compositions and manufacturing method thereof, heat insulating material
CN104194579A (en) Air conditioner foil paint and preparing method thereof
CN111040623A (en) Special functional heat-insulation and temperature-reduction coating and preparation method thereof
Zhang et al. The effects of microstructure on optical and thermal properties of porous silica films
CN113402940A (en) Heat-preservation and heat-insulation coating applied to building exterior wall
CN108203248A (en) A kind of preparation process of aeroge energy-saving glass

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
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20200421