CN111019445A - Special finish paint for reflective heat-insulating coating - Google Patents
Special finish paint for reflective heat-insulating coating Download PDFInfo
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- CN111019445A CN111019445A CN201911182694.4A CN201911182694A CN111019445A CN 111019445 A CN111019445 A CN 111019445A CN 201911182694 A CN201911182694 A CN 201911182694A CN 111019445 A CN111019445 A CN 111019445A
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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
- C09D125/00—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 an aromatic carbocyclic ring; Coating compositions based on derivatives of such polymers
- C09D125/02—Homopolymers or copolymers of hydrocarbons
- C09D125/04—Homopolymers or copolymers of styrene
- C09D125/08—Copolymers of styrene
- C09D125/14—Copolymers of styrene with unsaturated esters
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/004—Reflecting paints; Signal paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
- C09D5/1662—Synthetic film-forming substance
- C09D5/1668—Vinyl-type polymers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
- C09D5/1662—Synthetic film-forming substance
- C09D5/1675—Polyorganosiloxane-containing compositions
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1687—Use of special additives
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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Abstract
The invention provides a special finish paint for a reflective heat-insulating coating, which comprises the following components in percentage by mass: 35-45% of water; 50-60% of emulsion; 1.4-1.8% of a film-forming assistant; 0.1-0.2% of wetting agent; 1-10% of phase change microcapsule dispersion liquid; 0.1% of preservative; 0.1% of a comprehensive agent; 0.5-1% of a dispersant; 0.3-0.6% of ethylene glycol; the phase-change microcapsules in the phase-change microcapsule dispersion liquid are of a core-shell structure, and the content of the phase-change microcapsules in the phase-change microcapsule dispersion liquid is 0.5-30%; the phase change microcapsule consists of a core layer and a shell layer, wherein the core layer is made of phase change materials, and the shell layer is made of modified nano titanium dioxide. The reflective heat-insulating coating has good self-cleaning performance, stain resistance and weather resistance, and can improve the heat-insulating performance of the whole reflective heat-insulating coating system.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of building material exterior wall coatings, in particular to a special finish coat for a reflective heat-insulating coating.
[ background of the invention ]
The reflective heat-insulating coating for buildings is a novel energy-saving building material, is coated on the outer walls and roofs of buildings, can reflect sunlight, reduces the temperature of the inner surfaces of the buildings in summer, reduces the energy consumption of air conditioners, and has an energy-saving effect. Researchers have focused on designing coating systems for architectural reflective insulation coatings to have better reflective insulation properties. The top coating is arranged on the outermost layer of the reflective heat-insulating coating system and is the main position for accumulating electromagnetic waves and converting the electromagnetic waves into heat energy after being irradiated, and the temperature changes maximally along with the environment.
The reflective insulation design of the top coat faces two major problems: (1) with increasing pollution, conventional stain resistant hydrophobic finishes reduce moisture and dust adhesion, but are difficult to last. And a new antifouling way is searched or pollutants are spontaneously degraded to maintain the cleanness of the surface of the coating and improve the stain resistance of the finish paint, so that the energy-saving performance of the reflective heat-insulating coating is maintained. (2) The coating has high specific heat capacity, high phase change latent heat and proper melting range, is compounded with some organic matters, is used as a phase change energy storage material, is used in a reflective heat insulation coating of a building, and absorbs the latent heat by utilizing the phase change of the coating so as to maintain the temperature of a paint film between phase change temperatures, thereby achieving the heat suppression effect. However, the difficulty in realizing the phase-change material lies in the packaging technology, and many researches use high molecular polymers as packaging shells, while the organic polymer shell material has low strength, is easy to collapse, has poor packaging performance and poor thermal stability, and thus the application range of the organic polymer shell material is limited. If a proper packaging material can be selected, the phase change energy storage material can be added into the finish paint, the stability of the system is kept, and the reflective heat insulation performance of the coating can be improved.
The nanometer titanium dioxide is used as a photocatalyst with stable performance, no toxicity and low cost, and enters the visual field of researchers. The nano titanium dioxide is added into the exterior wall coating as an additive, and the nano titanium dioxide is modified while the catalytic activity of the photocatalyst is maintained, so that the nano titanium dioxide can better utilize visible light wave bands and can generate certain catalytic activity on PM2.5, sulfur dioxide, hydrogen sulfide, oxynitride and other atmospheric pollutants. The nanometer titanium dioxide is used as an inorganic shell layer, has the advantages of stable performance and difficult collapse, and is also a good shell layer material.
[ summary of the invention ]
The invention aims to solve the technical problem of providing a special finish coat for a reflective heat-insulating coating, which has good self-cleaning performance, stain resistance and weather resistance and can improve the heat-insulating performance of the whole reflective heat-insulating coating system.
The invention is realized by the following steps:
the special finish paint for the reflective heat-insulating coating comprises the following components in percentage by mass:
the phase-change microcapsule in the phase-change microcapsule dispersion liquid is of a core-shell structure, and the content of the phase-change microcapsule in the phase-change microcapsule dispersion liquid is 0.5-30%.
Further, the phase change microcapsule consists of a core layer and a shell layer, wherein the core layer is made of phase change materials and comprises one or more of alkane containing 10-30 carbon atoms, fatty acid ester and carbonic ester, and the melting range is 25-45 ℃; the shell layer is modified nano titanium dioxide, and the crystal configuration of the shell layer is one of anatase type and rutile type or the mixture of the anatase type and the rutile type.
Further, the phase-change microcapsule dispersion is prepared by the following method:
the first step is as follows: preparing a phase-change microcapsule by a microemulsion hydrothermal method: mixing phase change materials, dissolving the phase change materials in an organic solvent, adding a surfactant, and then adding butyl titanate to form a microemulsion; then adding water, slowly adding a catalyst to hydrolyze butyl titanate on the surface of the phase-change material, generating titanium dioxide to form a shell layer on the surface of the phase-change material, continuously stirring for 6-10 hours, and adding a strong electrolyte to demulsify the microemulsion; then transferring the obtained test solution into a hydrothermal reaction kettle, reacting for 8-12 h at 80-120 ℃, and then filtering and washing to obtain a phase-change microcapsule;
the second step is that: modification: and dispersing the obtained phase change microcapsule in a copper or silver nitrate solution for surface modification, stirring at a constant temperature of 50 ℃ for 7 hours, centrifuging, filtering, and dispersing in water to obtain the core-shell structure phase change microcapsule dispersion liquid.
The invention has the following advantages:
the invention compounds the phase-change energy storage material and the nano titanium dioxide to obtain the phase-change energy storage microcapsule taking the titanium dioxide as a shell, and carries out surface modification on the phase-change energy storage microcapsule to obtain the material with composite photocatalysis and phase-change energy storage performance, which can improve the stain resistance and weather resistance of buildings aiming at main pollutants in the environment outside the buildings, can also improve the heat inertia of walls, is used in combination with the reflective heat-insulating coating, and is beneficial to maintaining the stain resistance and weather resistance of a coating system.
[ description of the drawings ]
The invention will be further described with reference to the following examples with reference to the accompanying drawings.
FIG. 1 is a graph comparing the degradation capability of PM2.5 according to the embodiment of the present invention.
FIG. 2 is a graph showing a comparison of the degradation capability of sulfur dioxide in examples of the present invention.
Fig. 3 is a graph comparing thermal insulation performance according to an embodiment of the present invention.
[ detailed description ] embodiments
The invention relates to a special finish paint for a reflective heat-insulating coating, which comprises the following components in percentage by mass:
the phase-change microcapsule in the phase-change microcapsule dispersion liquid is of a core-shell structure, and the content of the phase-change microcapsule in the phase-change microcapsule dispersion liquid is 0.5-30%.
The phase change microcapsule consists of a core layer and a shell layer, wherein the core layer is made of a phase change material and comprises one or more of alkane containing 10-30 carbon atoms, fatty acid ester and carbonic ester, and the melting range is 25-45 ℃; the shell layer is modified nano titanium dioxide, and the crystal configuration of the shell layer is one of anatase type and rutile type or the mixture of the anatase type and the rutile type.
The phase-change microcapsule dispersion liquid is prepared by the following method:
the first step is as follows: preparing a phase-change microcapsule by a microemulsion hydrothermal method: mixing phase change materials, dissolving the phase change materials in an organic solvent, adding a surfactant, and then adding butyl titanate to form a microemulsion; then adding water, slowly adding a catalyst to hydrolyze butyl titanate on the surface of the phase-change material, generating titanium dioxide to form a shell layer on the surface of the phase-change material, continuously stirring for 6-10 hours, and adding a strong electrolyte to demulsify the microemulsion; then transferring the obtained test solution into a hydrothermal reaction kettle, reacting for 8-12 h at 80-120 ℃, and then filtering and washing to obtain a phase-change microcapsule;
the second step is that: modification: and dispersing the obtained phase change microcapsule in a copper or silver nitrate solution for surface modification, stirring at a constant temperature of 50 ℃ for 7 hours, centrifuging, filtering, and dispersing in water to obtain the core-shell structure phase change microcapsule dispersion liquid.
The present invention will be further described with reference to the following examples.
Example one
Weighing 6g of 30# paraffin and 9g of lauric acid, uniformly mixing, dissolving in 200ml of organic solvent, sequentially adding 10g of sodium dodecyl sulfate and 15g of butyl titanate, and stirring at high speed for emulsification to form microemulsion. 8g of deionized water was added, followed by the slow addition of 8ml of glacial acetic acid, and stirring was continued for 8 h. And then adding 10g of KCl, continuously stirring for 10h, transferring the test solution into a hydrothermal reaction kettle, reacting for 12h at 80 ℃, filtering and washing to obtain the phase-change microcapsule. And dispersing the obtained phase change microcapsule in 5% 200ml of copper nitrate solution for surface modification, stirring at a constant temperature of 50 ℃ for 7h, centrifuging, filtering, and dispersing in 70ml of water to obtain the phase change microcapsule dispersion liquid.
Weighing 350g of water, sequentially adding 1g of comprehensive agent, 8g of dispersing agent, 16g of film-forming aid, 1g of wetting agent and 3g of ethylene glycol at the dispersion speed of 1200rpm, then adjusting the dispersion speed to 600rpm, adding 100g of phase-change microcapsule dispersion liquid, uniformly stirring, adding 400g of organic silicon modified styrene-acrylic emulsion, 130g of silicon resin emulsion and 1g of preservative, and stirring for 50min to obtain the special finishing paint for the reflective heat-insulating coating.
Example two
Weighing 6g of 30# paraffin and 9g of lauric acid, uniformly mixing, dissolving in 200ml of organic solvent, and sequentially adding 10g of a compound of sodium alkyl sulfosuccinate-FS-935 and sodium alkyl sulfosuccinate-DP-300, wherein the compounding mass ratio is 4: 1, 15g of butyl titanate, and stirring and emulsifying at a high speed to form microemulsion. 8g of deionized water was added, followed by the slow addition of 8ml of glacial acetic acid, and stirring was continued for 8 h. And then adding 10g of KCl, continuously stirring for 10h, transferring the test solution into a hydrothermal reaction kettle, reacting for 12h at 80 ℃, filtering and washing to obtain the phase-change microcapsule. And dispersing the obtained phase change microcapsule in 5% 200ml of copper nitrate solution for surface modification, stirring at a constant temperature of 50 ℃ for 7h, centrifuging, filtering, and dispersing in 70ml of water to obtain the phase change microcapsule dispersion liquid.
Weighing 450g of water, sequentially adding 1g of comprehensive agent, 8g of dispersing agent, 16g of film-forming aid, 1g of wetting agent and 3g of ethylene glycol at the dispersion speed of 1200rpm, then adjusting the dispersion speed to 600rpm, adding 100g of phase-change microcapsule, uniformly stirring, adding 330g of organic silicon modified styrene-acrylic emulsion, 100g of silicon resin emulsion and 1g of preservative, and stirring for 50min to obtain the special finishing paint for the reflective heat-insulating coating.
EXAMPLE III
Weighing 5g of capric acid and 8g of 30# paraffin, uniformly mixing, dissolving in 150ml of organic solvent, sequentially adding 8g of sodium dodecyl sulfate and 12g of butyl titanate, and stirring at high speed for emulsification to form microemulsion. 6g of deionized water was added, followed by slow addition of 6ml of glacial acetic acid, and stirring was continued for 10 h. And then adding 10gKF, continuously stirring for 10h, transferring the test solution into a hydrothermal reaction kettle, reacting for 8h at 100 ℃, filtering and washing to obtain the core-shell structure phase change microcapsule. And dispersing the obtained core-shell structure phase change microcapsule in 5% 200ml of silver nitrate solution for surface modification, stirring at a constant temperature of 50 ℃ for 7h, centrifuging, filtering, and dispersing in 100ml of water to obtain the core-shell structure phase change microcapsule dispersion.
Weighing 350g of water, sequentially adding 1g of comprehensive agent, 5g of dispersing agent, 18g of film-forming aid, 1g of wetting agent and 5g of ethylene glycol at the dispersion speed of 1200rpm, then adjusting the dispersion speed to 600rpm, adding 10g of phase-change microcapsule, uniformly stirring, adding 459g of organic silicon modified styrene-acrylic emulsion, 150g of silicon resin emulsion and 1g of preservative, and stirring for 50min to obtain the special finishing paint for the reflective heat-insulating coating.
Comparative example one: a common finishing coat produced by Fujian building materials science and technology development Limited company is taken, and comprises the following components: 40-50% of water; 50-60% of emulsion; 1.4-1.8% of a film-forming assistant; 0.1-0.2% of wetting agent; 0.1% of preservative; 0.1% of a comprehensive agent; 0.5-1% of a dispersant; 0.3-0.6% of ethylene glycol.
Comparative example two: weighing 6g of 30# paraffin and 9g of lauric acid, uniformly mixing, dissolving in 200ml of organic solvent, sequentially adding 10g of sodium dodecyl sulfate and 15g of butyl titanate, and stirring at high speed for emulsification to form microemulsion. 8g of deionized water was added, followed by the slow addition of 8ml of glacial acetic acid, and stirring was continued for 8 h. Then adding 10g of KCl, continuously stirring for 10h, transferring the test solution into a hydrothermal reaction kettle, reacting for 12h at 80 ℃, filtering, washing, and dispersing in 70ml of water to obtain the phase-change microcapsule dispersion liquid.
Weighing 350g of water, sequentially adding 1g of comprehensive agent, 8g of dispersing agent, 16g of film-forming aid, 1g of wetting agent and 3g of ethylene glycol at the dispersion speed of 1200rpm, then adjusting the dispersion speed to 600rpm, adding 100g of phase-change microcapsule, uniformly stirring, adding 400g of organic silicon modified styrene-acrylic emulsion, 130g of silicon resin emulsion and 1g of preservative, and stirring for 50min to obtain the special finishing paint for the reflective heat-insulating coating.
Application and implementation effect comparison: the special finish paint for the reflective heat-insulating coating prepared by the invention is subjected to performance analysis.
1. The other materials are selected from the coating produced by Fujian building materials science and technology development company Limited, the obtained coating system comprises a seal primer, a reflective heat-insulating primer and a finish coat, and the finish coat is selected from the example I and the comparative example I respectively. Two coating systems were placed at 1m3The content of the simulated PM2.5 is 200 mu g/m3The degradation effect of the material is shown in a schematic diagram 1 when the material is placed under ultraviolet light for a period of time under the environment; with increasing time, the ambient PM2.5 concentration in comparative example 1 was essentially unchanged, whereas the PM2.5 concentration of example 1 decreased significantly. As can be seen from FIG. 1, the coating system using the special finishing paint for the reflective thermal insulation coating of the invention has better PM2.5 degradation capability.
2. The coating systems of example one, comparative example one and comparative example two were selected as the finish paint in a range of 1m3The content of simulated sulfur dioxide is 600 mu g/m3The degradation effect of the compound is shown in figure 2 when the compound is placed under ultraviolet light for a period of time under the environment. As can be seen from FIG. 2, the concentration of sulfur dioxide in comparative example 1 is substantially unchanged, while the sulfur dioxide in comparative example 2 and example 1, which are added with the phase-change microcapsule dispersion, is reduced with time, so that the components in the phase-change microcapsule dispersion can degrade sulfur dioxide, the sulfur dioxide concentration in example 2 is reduced more, and the degradation capability of the modified material is enhanced. In general, the material of the invention has better sulfur dioxide degradation capability after replacing the common finishing paint, and the degradation capability is enhanced after modification.
3. The following experiments were carried out using the coating systems of example one and comparative example one, respectively, with the following apparatus: the device consists of a heating light source (power is 270W, the range of the light-emitting wavelength is similar to that of sunlight), a thermometer and an experimental sample plate, wherein the distance between the light source and the sample plate is 60cm, the width of the device is 40cm, and the ambient temperature is 25 ℃. The sample plate is a calcium silicate plate with the thickness of 1 cm. The temperature-time relationship was recorded as shown in fig. 3. As can be seen from FIG. 3, the temperature of the comparative example 1 rises faster with the increase of the irradiation time, and the temperature of the example 1 rises slower, especially in the range of 25-45 ℃, because the phase change material used has a phase change temperature of 25-45 ℃, and the material absorbs heat and changes phase at the temperature, so as to maintain the temperature of the system, and the coating system adopting the special finishing paint for the reflective heat-insulating coating has better heat-insulating property, especially in the temperature range of 25-45 ℃.
In conclusion, the invention has the following advantages:
1. the finish paint has good self-cleaning performance and stain resistance;
2. the weather resistance of the finish paint is improved;
3. the heat insulation performance of the whole reflective heat insulation coating system is improved.
Although specific embodiments of the invention have been described above, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the appended claims.
Claims (3)
1. A special finish coat for reflective heat-insulating coating is characterized in that: the finishing paint comprises the following components in percentage by mass:
the phase-change microcapsule in the phase-change microcapsule dispersion liquid is of a core-shell structure, and the content of the phase-change microcapsule in the phase-change microcapsule dispersion liquid is 0.5-30%.
2. The finish paint special for the reflective heat-insulating coating according to claim 1, characterized in that: the phase change microcapsule consists of a core layer and a shell layer, wherein the core layer is made of a phase change material and comprises one or more of alkane containing 10-30 carbon atoms, fatty acid ester and carbonic ester, and the melting range is 25-45 ℃; the shell layer is modified nano titanium dioxide, and the crystal configuration of the shell layer is one of anatase type and rutile type or the mixture of the anatase type and the rutile type.
3. The finish paint special for the reflective heat-insulating coating according to claim 2, characterized in that: the phase-change microcapsule dispersion liquid is prepared by the following method:
the first step is as follows: preparing a phase-change microcapsule by a microemulsion hydrothermal method: mixing phase change materials, dissolving the phase change materials in an organic solvent, adding a surfactant, and then adding butyl titanate to form a microemulsion; then adding water, slowly adding a catalyst to hydrolyze butyl titanate on the surface of the phase-change material, generating titanium dioxide to form a shell layer on the surface of the phase-change material, continuously stirring for 6-10 hours, and adding a strong electrolyte to demulsify the microemulsion; then transferring the obtained test solution into a hydrothermal reaction kettle, reacting for 8-12 h at 80-120 ℃, and then filtering and washing to obtain a phase-change microcapsule;
the second step is that: modification: and dispersing the obtained phase change microcapsule in a copper or silver nitrate solution for surface modification, stirring at a constant temperature of 50 ℃ for 7 hours, centrifuging, filtering, and dispersing in water to obtain the core-shell structure phase change microcapsule dispersion liquid.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111423814A (en) * | 2020-04-26 | 2020-07-17 | 兄奕能源科技(江苏)有限公司 | Waterproof temperature-control thermal radiation coating and preparation method thereof |
| CN114481620A (en) * | 2022-01-22 | 2022-05-13 | 杭州富阳数马装饰工艺品有限公司 | Curtain fabric capable of degrading formaldehyde and production method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN114481620A (en) * | 2022-01-22 | 2022-05-13 | 杭州富阳数马装饰工艺品有限公司 | Curtain fabric capable of degrading formaldehyde and production method thereof |
| CN114481620B (en) * | 2022-01-22 | 2024-05-28 | 杭州富阳数马装饰工艺品有限公司 | Curtain cloth capable of degrading formaldehyde and production method thereof |
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