CN107964297B - Inorganic material coated phase-change microcapsule composite phase-change coating and preparation method and application thereof - Google Patents
Inorganic material coated phase-change microcapsule composite phase-change coating and preparation method and application thereof Download PDFInfo
- Publication number
- CN107964297B CN107964297B CN201710686048.6A CN201710686048A CN107964297B CN 107964297 B CN107964297 B CN 107964297B CN 201710686048 A CN201710686048 A CN 201710686048A CN 107964297 B CN107964297 B CN 107964297B
- Authority
- CN
- China
- Prior art keywords
- phase
- change
- inorganic material
- coated
- coating
- 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
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
- C09D143/00—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 containing boron, silicon, phosphorus, selenium, tellurium, or a metal; Coating compositions based on derivatives of such polymers
- C09D143/04—Homopolymers or copolymers of monomers containing silicon
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/01—Hydrocarbons
-
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/10—Encapsulated ingredients
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Manufacturing Of Micro-Capsules (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses an inorganic material coated phase-change microcapsule composite phase-change coating and a preparation method and application thereof. The phase change coating compounded by the phase change microcapsules coated by the inorganic material comprises the phase change microcapsules coated by the inorganic material, water and elastic emulsion; the enthalpy retention rate of the phase change microcapsules coated by the inorganic material is 20-99%; the average grain diameter of the phase-change microcapsule is 0.1-100 microns; the inorganic material used by the phase-change microcapsule coated by the inorganic material is not combustible, so that the phase-change microcapsule coated by the inorganic material has better safety performance compared with the phase-change microcapsule coated by the organic material. The inorganic material coated phase-change microcapsule composite phase-change coating not only can play a role in protection and decoration, but also can realize regulation and control of indoor temperature through heat storage, has small indoor temperature fluctuation for a house coated with an inner wall coating, reduces energy consumption, and has a good heat preservation effect.
Description
Technical Field
The invention belongs to the technical field of phase change materials, and particularly relates to an inorganic material coated phase change microcapsule composite phase change coating, and a preparation method and application thereof.
Background
In recent years, the problem of energy shortage has been troubling people, and in the face of the gradual depletion of non-renewable energy, how to maximize the use efficiency of energy has been a research hotspot in recent years. The phase-change material provides a new energy storage and heat storage idea for people. Under different temperature conditions, substances which realize the functions of energy storage and temperature control are generally called phase-change substances or phase-change materials through phase transformation, and the substances have good energy storage and temperature control capacities, so the substances become research hotspots in the fields of energy-saving application, system temperature control and the like in recent years. The phase change material absorbs heat to generate phase change (energy storage process) when the temperature is higher than a phase change point, and reversely generates reverse phase change (energy release process) when the temperature is reduced and is lower than the phase change point. This way of storing energy by using the phase change process of the material is called latent heat storage.
Microencapsulation of phase change materials has become a research hotspot in recent years, and the phase change materials can be divided into organic wall material phase change materials and inorganic wall material phase change materials according to different coated wall materials.
Most of organic wall materials are based on amino resin and modified material systems thereof, which generally have a good coating effect, but most of the organic wall materials are flammable, and a large amount of volatile organic compounds (such as formaldehyde, residual monomers and the like) remain in the coated phase-change material, so that a great deal of potential safety hazards are brought to the practical application of the phase-change material.
Compared with organic wall materials, the inorganic wall material can not burn, and has better safety performance; in addition, the phase-change material coated by the inorganic material has the advantages of constant phase-change temperature, high energy storage density, high thermal conductivity and the like. Therefore, the phase change microcapsule coated by the inorganic material has better application prospect in the aspect of energy-saving building materials. But the mass preparation of the phase-change microcapsules coated by the inorganic material is still difficult to realize in the aspect of productivity; in addition, the amount of the phase change material coated by the phase change microcapsule coated by the inorganic material is far lower than that of the phase change material coated by the phase change microcapsule coated by the organic material; these defects severely limit their practical application in practical production.
Disclosure of Invention
In order to solve the defects of the prior art, the invention aims to provide an inorganic material coated phase-change microcapsule composite phase-change coating, and a preparation method and application thereof.
The purpose of the invention is realized by the following technical scheme:
an inorganic material coated phase-change microcapsule composite phase-change coating; the phase change coating comprises phase change microcapsules coated by inorganic materials, elastic emulsion and water; the phase change microcapsule comprises a core material and a wall material; the core material comprises a phase-change material, and the wall material is an inorganic material; the enthalpy retention rate of the phase change microcapsules coated by the inorganic material is 20-99%; the average grain diameter of the phase-change microcapsule is 0.1-100 microns.
According to the present invention, the phase change coating may further include one or more of a dispersant, a wetting agent, a thickener, and a preservative.
According to the invention, the phase change coating comprises the following composition in percentage by weight:
wherein the sum of the components in the composition is 100 percent.
Preferably, the phase change coating comprises the following composition in percentage by weight:
wherein the sum of the components in the composition is 100 percent.
Preferably, the enthalpy retention rate of the phase change microcapsule coated by the inorganic material is 75-99%.
Preferably, the enthalpy retention rate of the phase change microcapsule coated by the inorganic material is 75-95%.
Preferably, the enthalpy retention rate of the phase change microcapsule coated by the inorganic material is 80-93%.
Preferably, the average particle size of the phase-change microcapsule coated by the inorganic material is 1-10 microns.
Preferably, the average particle size of the phase-change microcapsule coated by the inorganic material is 2-5 microns.
In the invention, the enthalpy retention rate of the phase-change microcapsule coated by the inorganic material is consistent with the coating rate and the core material content, and can be calculated by melting enthalpy or crystallization enthalpy, and the calculation method comprises the following steps:
enthalpy retention rate (coating rate) core material content (delta H)m/ΔHm0×100％；
The content of wall materials is 100 percent to the content of core materials;
wherein, Δ Hm0Is the phase transition point enthalpy, Δ H, of the core material of the phase transition microcapsulemIs the enthalpy value of the phase change point of the phase change microcapsule.
According to the invention, the phase-change material is a solid-liquid phase-change material, and comprises at least one of alcohol compounds, organic acid compounds, ester compounds and alkane compounds.
Preferably, the alcohol compound is at least one selected from the group consisting of glycerol, erythritol, dodecanol, tetradecanol, hexadecanol, and erythritol.
Preferably, the organic acid compound is at least one selected from caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, lauric acid, palmitic acid, and stearic acid.
Preferably, the ester compound is at least one selected from the group consisting of cellulose laurate and cetyl stearate.
Preferably, the alkane compound is at least one selected from paraffin (melting point 14-80 ℃), aromatic hydrocarbon, and aliphatic hydrocarbon (carbon number 8-100).
According to the invention, the inorganic material comprises SiO2、TiO2、SnO2、ZrO2And Al2O3At least one of (1).
According to the invention, the phase change temperature of the inorganic material coated phase change microcapsule is 14-52 ℃; preferably 20 to 40 ℃.
According to the invention, the latent heat of phase change of the inorganic material coated phase change microcapsule is 30J/g to 240J/g, preferably 100J/g to 230J/g, and preferably 110J/g to 220J/g.
According to the invention, the elastic emulsion is chosen from pure acrylate elastic emulsions (such as T)gAcrylate elastic emulsion at a temperature of less than-20 ℃) and silicone acrylate elastic emulsion.
The invention also provides a preparation method of the inorganic material coated phase-change microcapsule composite phase-change coating, which comprises the following steps:
(1) under high-speed stirring, uniformly mixing water, and optionally a thickening agent, a wetting agent, a dispersing agent and a preservative; obtaining a mixed system;
(2) and adding the phase-change microcapsule and the elastic emulsion coated with the inorganic material into the mixed system under low-speed stirring, and uniformly stirring to obtain the phase-change coating compounded by the phase-change microcapsule coated with the inorganic material.
According to the present invention, in the step (1), the number of revolutions of the high speed stirring is 2000rpm to 5000 rpm.
According to the invention, in the step (2), the rotation speed of the low-speed stirring is 200rpm to 400 rpm.
The invention also provides application of the phase change microcapsule composite phase change coating coated by the inorganic material, which can be used in the fields of building materials, technical products and the like.
Preferably, the phase change coating can be used for ceilings and walls, and can also be made into artware.
The invention has the beneficial effects that:
the invention provides an inorganic material coated phase-change microcapsule composite phase-change coating and a preparation method and application thereof. The phase change coating compounded by the phase change microcapsules coated by the inorganic material comprises the phase change microcapsules coated by the inorganic material, water and elastic emulsion; the phase change microcapsule comprises a core material and a wall material; the core material comprises a phase-change material, and the wall material is an inorganic material; the enthalpy retention rate of the phase change microcapsules coated by the inorganic material is 20-99%; the average grain diameter of the phase-change microcapsule is 0.1-100 microns; the inorganic material used by the phase-change microcapsule coated by the inorganic material is not combustible, so that the phase-change microcapsule coated by the inorganic material has better safety performance compared with the phase-change microcapsule coated by the organic material. The phase-change microcapsule composite phase-change coating coated with the inorganic material, which is prepared by the invention, not only can play a role in protection and decoration, but also can realize regulation and control of indoor temperature through heat storage, so that the indoor temperature fluctuation of a house coated with an inner wall coating is small (can be controlled to be 2-4 ℃), the energy consumption is reduced, and the heat-preservation effect is good. The preparation process of the phase-change coating is green and environment-friendly, the industrial preparation is easy to realize, and the process cost is reduced.
Detailed Description
As mentioned above, the present invention provides an inorganic material coated phase change microcapsule composite phase change coating, which comprises inorganic material coated phase change microcapsules, an elastic emulsion, and water; the phase change microcapsule comprises a core material and a wall material; the core material comprises a phase-change material, and the wall material is an inorganic material; the enthalpy retention rate of the phase change microcapsules coated by the inorganic material is 20-99%; the average grain diameter of the phase-change microcapsule is 0.1-100 microns.
In the invention, the preparation method of the phase-change microcapsule coated by the inorganic material comprises the following steps:
1) preparing a dispersed phase, including dispersing an inorganic substance reaction precursor in a molten phase-change material;
2) preparing a continuous phase, including dissolving an emulsifier in a polar solvent;
3) dispersing the dispersed phase prepared in the step 1) in the continuous phase prepared in the step 2), and forming emulsion through emulsification under the action of an emulsifier;
4) carrying out interface reaction on the emulsion prepared in the step 3) at normal temperature or under a heating condition to prepare the phase-change microcapsule coated by the inorganic material.
Wherein, in the step 1), the inorganic substance reaction precursor comprises R1CnH2n-M1(R2)m(R3)3-mOr R1CnH2n-M2(R2)p(R3)2-pAt least one of; wherein M is1Is Si, Ti, Sn or Zr, M2Is Al; m, n and p are integers, n is more than or equal to 0 and less than or equal to 127, m is more than or equal to 0 and less than or equal to 3, and p is more than or equal to 0 and less than or equal to 2; the R is1Selected from H, fatty alkyl, phenyl, epoxy, -OCyH2y+1Vinyl, amino, -CN, -NHCONH2、-Cl、-NH(CH2)2NH22, 3-epoxypropoxy, methacryloxy or mercapto; r2、R3Identical or different, independently of one another, from the group-Cl, -CH3、-OCH2Ph、-OCyH2y+1or-OC2H4OCH3(ii) a said-OCyH2y+1Wherein y is an integer of 1 to 20.
Preferably, the inorganic reaction precursor comprises at least one of titanate coupling agent, silicate coupling agent, stannate coupling agent, zirconate coupling agent and aluminate coupling agent.
More preferably, the inorganic reactive precursor comprises at least one of tetra-n-butyl titanate, tetra-isopropyl titanate, ethyl orthosilicate, epoxypropyltrimethoxysilane, phenyltriethoxysilane, aminopropyltrimethoxysilane, phenyltrimethoxysilane, n-octyltriethoxysilane, tetrabutyl stannate, NW-2 stannate coupling agent, tetrabutyl zirconate, triisopropyl aluminate, and tribenzyl aluminate.
In the step 1), the inorganic material is at least one selected from titanium dioxide, silicon dioxide, zirconium dioxide, tin dioxide and aluminum trioxide.
Preferably, the inorganic material is selected from at least one of titanium dioxide, silicon dioxide, and aluminum trioxide.
In the step 1), the phase change material is a solid-liquid phase change material, and may include at least one of an alcohol compound, an organic acid compound, an ester compound, and an alkane compound.
Preferably, the alcohol compound is at least one selected from the group consisting of glycerol, erythritol, dodecanol, tetradecanol, hexadecanol, and erythritol.
Preferably, the organic acid compound is at least one selected from caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, lauric acid, palmitic acid, and stearic acid.
Preferably, the ester compound is at least one selected from the group consisting of cellulose laurate and cetyl stearate.
Preferably, the alkane compound is at least one selected from paraffin (melting point 14-80 ℃), aromatic hydrocarbon, and aliphatic hydrocarbon (carbon number is 8-100, such as n-octadecane).
In the step 1), the mass ratio of the inorganic substance reaction precursor to the phase-change material is 1: 0.1-100; preferably 1:1 to 50.
In the step 2), in order to regulate and control the hydrolysis-condensation speed of the inorganic substance reaction precursor, the pH value of the continuous phase is regulated by acid or alkali to 1-14, preferably 2-12.
Preferably, the choice of the acid or the base and the concentration thereof are not particularly limited and may be applied to the reaction system of the present invention. Illustratively, the acid is selected from at least one of hydrochloric acid, sulfuric acid and nitric acid, and the base is selected from at least one of sodium hydroxide, potassium hydroxide and ammonia water.
In the step 2), the emulsifier comprises sodium salt hydrolysate of ethylene methyl ether-maleic anhydride copolymer, sodium salt hydrolysate of isobutylene-maleic anhydride copolymer, sodium salt hydrolysate of styrene-maleic anhydride copolymer, sodium salt hydrolysate of ethylene-maleic anhydride copolymer, copolymer obtained by copolymerizing acrylic acid or methacrylic acid with styrene, ethylene, vinyl alcohol, vinyl acetate, methacrylamide, isobutylene, acrylate, methacrylate or acrylonitrile, polyvinylbenzene sulfonic acid, sodium polyvinylbenzene sulfonate, emulsifier OP-5, emulsifier OP-10, Tween20 (Tween20), Tween60 (Tween60), Tween80 (Tween80), polyethylene glycol octylphenyl ether X-100(Triton X-100), sodium dodecyl sulfate, sodium dodecyl benzene sulfonate, At least one of hexadecyl trimethyl ammonium bromide and dioctyl sodium sulfosuccinate.
In the step 2), the polar solvent comprises at least one of water, methanol, ethylene glycol, propylene glycol, glycerol, tetrahydrofuran and N, N-dimethylformamide.
In the step 3), the volume ratio of the dispersed phase to the continuous phase is 1: 1-100; preferably 1:1 to 50.
In the step 3), the dosage of the emulsifier is 0.5-30% of the mass of the emulsion, and preferably 1-20%.
In the step 3), the emulsification can be high-speed shearing emulsification or ultrasonic emulsification; the shearing speed of the high-speed shearing emulsification is within the range of 1000-25000 r/min, and the shearing time is within the range of 0.5-30 min; the ultrasonic frequency during ultrasonic emulsification is within the range of 1000 Hz-40000 Hz, and the ultrasonic emulsification time is within the range of 10 minutes-60 minutes.
In the step 4), the reaction temperature of the interfacial reaction is 20-90 ℃, and the reaction time is 0.5-72 hours.
The method further comprises a post-processing step, wherein the post-processing step specifically comprises the following steps: and (3) carrying out centrifugation or suction filtration on the phase change microcapsule mixed system mixed with the inorganic material coating to obtain a solid phase product, washing and drying to obtain the inorganic material coated phase change microcapsule.
Preferably, when a centrifugal method is selected to obtain a solid-phase product, the centrifugal speed is 3000-15000 rpm, and the centrifugal time is 2-30 minutes; when a solid-phase product is obtained by selecting a suction filtration method, the aperture of the filter paper for suction filtration is 50-500 mu m.
The method specifically comprises the following steps:
a) dispersing an inorganic substance reaction precursor into a molten solid-liquid phase-change material to obtain a uniform dispersion system, and taking the dispersion system as a dispersion phase;
b) adding an emulsifier into water, dispersing to obtain a uniform dispersion system, taking the dispersion system as a continuous phase, and simultaneously adjusting the pH value of the continuous phase by using acid or alkali;
c) mixing the dispersed phase and the continuous phase, and forming emulsion through emulsification under the action of an emulsifier;
d) carrying out interface reaction at normal temperature or under heating condition to obtain phase change microcapsule coated by inorganic wall material;
e) and separating, washing and drying to obtain the phase change microcapsule dry powder coated by the inorganic wall material.
In the present invention, the phase change microcapsule coated with an inorganic material and the preparation method thereof are described in the patent application entitled "an inorganic material coated phase change microcapsule and the preparation method and application thereof" filed by the applicant on the same day, and the entire contents of the invention are incorporated herein as the disclosure of the present invention.
In the invention, the phase change microcapsule coated by the inorganic material is added, so that the coating, which is a common building material, has the characteristics of heat preservation and energy storage, thereby realizing the energy saving of the building.
In the present invention, the dispersant is not particularly limited, and may be applied to the system of the phase change coating material of the present invention. Illustratively, the dispersant is selected from at least one of ammonium or sodium polyacrylate salts. The addition of the dispersing agent is beneficial to improving the dispersing performance of the solid material.
In the present invention, the wetting agent is not particularly limited, and may be applied to the system of the phase change coating material of the present invention. Illustratively, the wetting agent is at least one selected from the group consisting of polyhydric alcohol polyoxyethylene ether, sodium isopropyl naphthalene sulfonate, and alkyl naphthalene sulfonate. The addition of the wetting agent can reduce the surface tension of the coating.
In the present invention, the thickener is not particularly limited, and may be suitably used in the system of the phase change coating material of the present invention. Illustratively, the thickener is at least one selected from cellulose and polyurethane. The addition of the thickening agent can adjust the viscosity of the paint.
In the present invention, the preservative is not particularly limited, and may be applied to the system of the phase change coating material of the present invention. Illustratively, the preservative is at least one selected from benzoic acid, sodium benzoate, sorbic acid and potassium sorbate. The addition of the preservative can inhibit the coating from decomposing microorganisms, and prevent the coating from demulsification and deterioration.
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes or modifications can be made by those skilled in the art after reading the description of the present invention, and such equivalents also fall within the scope of the invention.
Example 1
(1) Preparation of inorganic material coated phase-change microcapsule
10g of tetrabutyl titanate, 2g of aminopropyltrimethoxysilane and 1g of phenyltrimethoxysilane were added to 30g of n-octadecane, and the mixture was thoroughly mixed to obtain an oil phase. 2.5g of sodium lauryl sulfate was added to 50g of water as an aqueous phase, and the pH of the aqueous phase was adjusted to 2.5 with hydrochloric acid having a concentration of 2 mol/L. Mixing oil phase and water phase, emulsifying by ultrasonic wave for 30min, transferring the obtained emulsion into a three-neck bottle, and reacting for 12 h at 70 ℃ under mechanical stirring. And separating, washing and further drying to obtain the inorganic material coated phase change microcapsule dry powder.
The phase change temperature of the prepared inorganic material coated phase change microcapsule is 25.05 ℃, and the phase change latent heat is 124J/g.
(2) Components and content of phase change coating
Weighing the following components in parts by weight:
the dispersant is particularly polyacrylic acid ammonium salt;
the wetting agent is specifically polyhydric alcohol polyoxyethylene ether;
the thickening agent is cellulose;
the antiseptic is sorbic acid;
the elastic emulsion is acrylate emulsion with TG less than-20 ℃.
(3) Preparation of phase change coatings
1) Under high-speed stirring (the revolution is 2000rpm), uniformly mixing water, a thickening agent, a wetting agent, a dispersing agent and a preservative according to the mass percentage; obtaining a mixed system;
2) and adding the phase-change microcapsule and the elastic emulsion coated with the inorganic material into the mixed system according to the mass percent under the condition of low-speed stirring (the revolution is 250rpm), and uniformly stirring to obtain the phase-change coating compounded by the phase-change microcapsule coated with the inorganic material.
The results of the performance tests of the phase change coatings are listed in table 2.
Examples 2 to 4
(1) Preparation of inorganic material coated phase-change microcapsule
The same as in example 1.
(2) Components and content of phase change coating
The phase change coating was selected with the same composition as in example 1, except that the phase change coating had different composition contents.
(3) Preparation of phase change coatings
The component contents of the phase change coating are listed in table 1 and the performance test results of the phase change coating are listed in table 2, as in example 1.
Example 5
(1) Preparation of inorganic material coated phase-change microcapsule
10g of ethyl orthosilicate, 0.5g of aminopropyltrimethoxysilane and 0.5g of phenyltrimethoxysilane are added into 30g of n-hexadecane and fully mixed to form an oil phase. 1g of tween80 was added to 50g of water as an aqueous phase, and the pH of the aqueous phase was adjusted to 4 with 2mol/L hydrochloric acid. Mixing oil phase and water phase, emulsifying by ultrasonic wave for 30min, transferring the obtained emulsion into a three-neck bottle, and reacting for 12 h at 70 ℃ under mechanical stirring. And separating, washing and further drying to obtain the inorganic material coated phase change microcapsule dry powder.
The phase change temperature of the prepared inorganic material coated phase change microcapsule is 20.1 ℃, and the latent heat of phase change is 133J/g.
(2) Components and content of phase change coating
Weighing the following components in parts by weight:
the dispersant is particularly polyacrylic acid ammonium salt;
the wetting agent is specifically polyhydric alcohol polyoxyethylene ether;
the thickening agent is specifically polyurethanes;
the antiseptic is potassium sorbate;
the elastic emulsion is organic silicon acrylate emulsion with TG less than-20 ℃.
(3) Preparation of phase change coatings
The same as in example 1.
Examples 6 to 9
(1) Preparation of inorganic material coated phase-change microcapsule
The same as in example 5.
(2) Components and content of phase change coating
The phase change coating was selected with the same composition as in example 5, except that the phase change coating had different composition contents.
(3) Preparation of phase change coatings
The component contents of the phase change coating are listed in table 1 and the performance test results of the phase change coating are listed in table 2, as in example 1.
Table 1 shows the component contents of the phase change coating materials of examples 1 to 9
| Elastic emulsion | Water (W) | Microcapsules | Dispersing agent | Wetting agent | Thickening agent | Preservative | |
| Example 1 | 36 | 40 | 20 | 1 | 1 | 1 | 1 |
| Example 2 | 36 | 38 | 22 | 1 | 1 | 1 | 1 |
| Example 3 | 38 | 36 | 22 | 1 | 1 | 1 | 1 |
| Example 4 | 33 | 38 | 25 | 1 | 1 | 1 | 1 |
| Example 5 | 38 | 40 | 20 | 0.5 | 0.5 | 0.5 | 0.5 |
| Example 6 | 36 | 40 | 22 | 0.5 | 0.5 | 0.5 | 0.5 |
| Example 7 | 36 | 35 | 25 | 1 | 1 | 1 | 1 |
| Example 8 | 33 | 35 | 30 | 0.5 | 0.5 | 0.5 | 0.5 |
| Example 9 | 40 | 40 | 20 | 0 | 0 | 0 | 0 |
Table 2 shows the results of the performance tests of the phase change coatings of examples 1 to 9
| Latent heat of phase change (J/g) | |
| Example 1 | 30.2 |
| Example 2 | 33.3 |
| Example 3 | 33.5 |
| Example 4 | 36.3 |
| Example 5 | 29.8 |
| Example 6 | 33.6 |
| Example 7 | 36.9 |
| Example 8 | 41.5 |
| Example 9 | 29.5 |
As can be seen from Table 1 and Table 2, the properties of the coating are not affected by adjusting the addition of the phase-change microcapsules within a certain range, and the latent heat of phase change of the phase-change coating tends to increase with the increase of the addition of the microcapsules.
The embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiment. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (12)
1. The preparation method of the phase change coating compounded by the phase change microcapsules coated by the inorganic material is characterized in that the phase change coating comprises the phase change microcapsules coated by the inorganic material, elastic emulsion and water; the phase change microcapsule comprises a core material and a wall material; the core material comprises a phase-change material, and the wall material is an inorganic material; the coating rate of the inorganic material coated phase-change microcapsules is 80-99%; the average particle size of the phase change microcapsule is 2-5 microns;
the phase change coating further comprises one or more of a dispersing agent, a wetting agent, a thickening agent and a preservative;
the phase change coating comprises the following composition in percentage by weight:
wherein, the sum of all the components in the composition is 100 percent;
the elastic emulsion is selected from at least one of pure acrylate elastic emulsion and organic silicon acrylate elastic emulsion;
the preparation method of the phase change coating comprises the following steps:
firstly, the phase-change microcapsule is prepared by a method comprising the following steps:
1) preparing a dispersed phase, including dispersing an inorganic substance reaction precursor in a molten phase-change material;
2) preparing a continuous phase, including dissolving an emulsifier in a polar solvent;
3) dispersing the dispersed phase prepared in the step 1) in the continuous phase prepared in the step 2), and forming emulsion through emulsification under the action of an emulsifier;
4) carrying out interface reaction on the emulsion prepared in the step 3) at normal temperature or under a heating condition to prepare the phase-change microcapsule coated by the inorganic material;
then, the phase change coating is prepared by a method comprising the steps of:
(1) under high-speed stirring, uniformly mixing water, and optionally a thickening agent, a wetting agent, a dispersing agent and a preservative; obtaining a mixed system;
(2) and adding the phase-change microcapsule and the elastic emulsion coated with the inorganic material into the mixed system under low-speed stirring, and uniformly stirring to obtain the phase-change coating compounded by the phase-change microcapsule coated with the inorganic material.
2. The method for preparing phase-change paint according to claim 1, wherein the coating rate of the inorganic material coated phase-change microcapsule is 80-95%.
3. The method for preparing the phase-change coating according to claim 2, wherein the coating rate of the inorganic material-coated phase-change microcapsules is 80-93%.
4. The method for preparing the phase-change coating according to claim 1, wherein the phase-change material is a solid-liquid phase-change material, and the solid-liquid phase-change material comprises at least one of an alcohol compound, an organic acid compound, an ester compound and an alkane compound.
5. The method of preparing a phase change coating material according to claim 4, wherein the alcohol compound is at least one selected from the group consisting of glycerol, erythritol, dodecanol, tetradecanol, hexadecanol, and erythritol;
the organic acid compound is at least one selected from caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, lauric acid, myristic acid, palmitic acid and stearic acid;
the ester compound is selected from at least one of lauric acid cellulose ester and stearic acid hexadecyl ester;
the alkane compound is at least one selected from paraffin, aromatic hydrocarbon and aliphatic hydrocarbon.
6. The method of claim 1, wherein the inorganic material comprises SiO2、TiO2、SnO2、ZrO2And Al2O3At least one of (1).
7. The method for preparing the phase-change coating according to any one of claims 1 to 6, wherein the phase-change temperature of the inorganic material-coated phase-change microcapsule is 14 to 52 ℃.
8. The method for preparing the phase-change coating according to any one of claims 1 to 6, wherein the phase-change microcapsules coated with the inorganic material have a latent heat of phase change of 30J/g to 240J/g.
9. The method of preparing a phase change coating material according to claim 1, wherein the number of revolutions of the high speed stirring is 2000rpm to 5000rpm in step (1).
10. The method of preparing a phase change coating according to claim 1, wherein the number of revolutions of the low-speed stirring is 200 to 400rpm in step (2).
11. The method for preparing the phase-change coating material compounded by the phase-change microcapsules coated by the inorganic material as claimed in claim 1, wherein the phase-change coating material is used in the fields of building materials and technical products.
12. The method for preparing the phase-change microcapsule composite phase-change coating coated with the inorganic material according to claim 11, wherein the phase-change coating is applied to ceilings, walls or artware.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710686048.6A CN107964297B (en) | 2017-08-11 | 2017-08-11 | Inorganic material coated phase-change microcapsule composite phase-change coating and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710686048.6A CN107964297B (en) | 2017-08-11 | 2017-08-11 | Inorganic material coated phase-change microcapsule composite phase-change coating and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107964297A CN107964297A (en) | 2018-04-27 |
| CN107964297B true CN107964297B (en) | 2021-05-11 |
Family
ID=61996677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710686048.6A Active CN107964297B (en) | 2017-08-11 | 2017-08-11 | Inorganic material coated phase-change microcapsule composite phase-change coating and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107964297B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109692795A (en) * | 2018-11-20 | 2019-04-30 | 吴江市格瑞福金属制品有限公司 | A kind of metallic insulation pad process for surface coating |
| CN111218181B (en) * | 2020-03-11 | 2021-08-17 | 浙江理工大学 | Preparation method of self-temperature-adjustable water-based silicone acrylic coating |
| CN112126294B (en) * | 2020-08-27 | 2021-10-29 | 悉奥控股有限公司 | Antibacterial and anti-ultraviolet color temperature-adjusting coating containing iron oxide/silicon dioxide coated paraffin phase-change microcapsules and preparation method thereof |
| CN112194941B (en) * | 2020-09-15 | 2021-12-03 | 悉奥控股有限公司 | Antibacterial and ultraviolet-resistant color temperature-adjusting coating containing iron oxide-coated paraffin phase-change microcapsules and preparation method thereof |
| CN114437668A (en) * | 2020-10-31 | 2022-05-06 | 中国石油化工股份有限公司 | Inorganic composite capsule wall phase change microcapsule |
| CN115851045A (en) * | 2022-12-29 | 2023-03-28 | 杭州英诺克新材料有限公司 | Special functional coating for building interior and exterior walls |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1280377C (en) * | 2003-08-21 | 2006-10-18 | 河北工业大学 | Microcapsule coated phase change material and its preparation method |
| CN104087077B (en) * | 2014-07-04 | 2017-01-25 | 东南大学 | Phase-change heat storage insulation coating based on phase-change heat storage as well as preparation method and application of coating |
| CN106520078A (en) * | 2016-10-18 | 2017-03-22 | 上海应用技术大学 | Phase-change energy-storing microcapsule taking inorganic material as wall material and preparation method thereof |
-
2017
- 2017-08-11 CN CN201710686048.6A patent/CN107964297B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107964297A (en) | 2018-04-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107964297B (en) | Inorganic material coated phase-change microcapsule composite phase-change coating and preparation method and application thereof | |
| CN107513375B (en) | Phase-change microcapsule coated with silicon dioxide and preparation method and application thereof | |
| CN107384328B (en) | Preparation method of inorganic material coated phase-change microcapsule, product and application thereof | |
| CN107365121A (en) | Compound phase transformation putty of a kind of phase-change microcapsule of inorganic material coating and its preparation method and application | |
| CN106752526B (en) | Water-based light-reflection industrial heat-insulating coating and preparation method thereof | |
| CN110330848B (en) | Water-based environment-friendly mould-proof temperature-control building coating and preparation method thereof | |
| CN107445574A (en) | Compound plasterboard of a kind of phase-change microcapsule of inorganic material coating and its preparation method and application | |
| CN109499499B (en) | Super-hydrophobic phase change energy storage material microcapsule and preparation method thereof | |
| CN108774499B (en) | Graphene-silicon dioxide composite wall material phase change nanocapsule and preparation method thereof | |
| CN111621265B (en) | Phase change microcapsule based on inorganic shell layer and manufacturing method and application thereof | |
| CN108251067B (en) | Phase-change fluid based on graphene oxide and titanium dioxide coated paraffin and preparation method thereof | |
| CN104087077A (en) | Phase-change heat storage insulation coating based on phase-change heat storage as well as preparation method and application of coating | |
| CN111675941A (en) | Preparation method of water-based heat-insulating and cooling coating | |
| CN101948651A (en) | Aluminium silicate nano composite insulation coating and preparation method thereof | |
| CN107163711A (en) | A kind of aquosity elastic heat preserving insulating paint and preparation method thereof | |
| CN111059949B (en) | Novel reinforced composite phase-change fluid and preparation method and application thereof | |
| CN113355055A (en) | Microcapsule with high phase change enthalpy and preparation method thereof | |
| CN109796814B (en) | Antibacterial interior wall coating and preparation method thereof | |
| CN111718613A (en) | Water-based heat insulation coating | |
| CN104592823B (en) | nickel acid bismuth nano-wire multifunctional coating | |
| CN114456774B (en) | Shell-encapsulated microcapsule phase change material and preparation method and application thereof | |
| CN110684306A (en) | EVA type re-dispersible latex powder and preparation method thereof | |
| CN109762385A (en) | A kind of lithium conductive film coating water paint and preparation method thereof | |
| CN106833186A (en) | A kind of water paint preparation method of temperature adjustment temperature controlling function | |
| CN110724427B (en) | Waterproof acid-resistant paint, preparation method thereof and waterproof acid-resistant coating |
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 | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180720 Address after: 100041 66 7, 5 Building 5, Shixing street, Shijingshan District, Beijing. Applicant after: Zhongke world Yu (Beijing) Technology Co., Ltd. Address before: 100190 north one street, Zhongguancun, Haidian District, Beijing, No. 2 Applicant before: Institute of Chemistry, Chinese Academy of Sciences |
|
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190723 Address after: 100036 15 Floor, Building 2, Guohai Plaza, 17 Fuxing Road, Haidian District, Beijing Applicant after: Beijing New Building Materials Public Limited Company Address before: 100041 No. 66, 7th floor, No. 5 Building, 30 Shixing Street, Shijingshan District, Beijing Applicant before: Zhongke world Yu (Beijing) Technology Co., Ltd. |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |