CN115197640A - Thermochromic material and preparation method thereof - Google Patents
Thermochromic material and preparation method thereof Download PDFInfo
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- CN115197640A CN115197640A CN202211002933.5A CN202211002933A CN115197640A CN 115197640 A CN115197640 A CN 115197640A CN 202211002933 A CN202211002933 A CN 202211002933A CN 115197640 A CN115197640 A CN 115197640A
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- 239000000463 material Substances 0.000 title claims abstract description 53
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000000843 powder Substances 0.000 claims abstract description 42
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 34
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 34
- 239000000203 mixture Substances 0.000 claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims abstract description 25
- 238000003756 stirring Methods 0.000 claims abstract description 25
- 239000011347 resin Substances 0.000 claims abstract description 18
- 229920005989 resin Polymers 0.000 claims abstract description 18
- 239000004593 Epoxy Substances 0.000 claims abstract description 17
- 238000002156 mixing Methods 0.000 claims abstract description 17
- 239000004814 polyurethane Substances 0.000 claims abstract description 15
- 229920002635 polyurethane Polymers 0.000 claims abstract description 15
- 238000001816 cooling Methods 0.000 claims abstract description 11
- 238000000227 grinding Methods 0.000 claims abstract description 9
- 239000003960 organic solvent Substances 0.000 claims abstract description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 22
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 21
- UQDUPQYQJKYHQI-UHFFFAOYSA-N methyl laurate Chemical compound CCCCCCCCCCCC(=O)OC UQDUPQYQJKYHQI-UHFFFAOYSA-N 0.000 claims description 20
- WNZQDUSMALZDQF-UHFFFAOYSA-N 2-benzofuran-1(3H)-one Chemical compound C1=CC=C2C(=O)OCC2=C1 WNZQDUSMALZDQF-UHFFFAOYSA-N 0.000 claims description 16
- 239000011259 mixed solution Substances 0.000 claims description 14
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 12
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 12
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 238000001723 curing Methods 0.000 claims description 7
- 239000003995 emulsifying agent Substances 0.000 claims description 7
- 230000001804 emulsifying effect Effects 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 7
- 238000005406 washing Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 6
- UOBSVARXACCLLH-UHFFFAOYSA-N monomethyl adipate Chemical compound COC(=O)CCCCC(O)=O UOBSVARXACCLLH-UHFFFAOYSA-N 0.000 claims description 6
- OMISSKPKEYAHLU-UHFFFAOYSA-N 3H-2-benzofuran-1-one 2,3-dihydro-1H-indole Chemical compound C1(=O)OCC2=CC=CC=C12.N1CCC2=CC=CC=C12 OMISSKPKEYAHLU-UHFFFAOYSA-N 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- UDSFAEKRVUSQDD-UHFFFAOYSA-N Dimethyl adipate Chemical compound COC(=O)CCCCC(=O)OC UDSFAEKRVUSQDD-UHFFFAOYSA-N 0.000 claims description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 2
- 125000003916 ethylene diamine group Chemical group 0.000 claims description 2
- 238000002844 melting Methods 0.000 abstract description 5
- 230000008018 melting Effects 0.000 abstract description 5
- 238000002845 discoloration Methods 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 description 11
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 10
- 239000002994 raw material Substances 0.000 description 9
- 238000004945 emulsification Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 239000011230 binding agent Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000003094 microcapsule Substances 0.000 description 2
- 239000011540 sensing material Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000003848 UV Light-Curing Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
- C09D175/16—Polyurethanes having carbon-to-carbon unsaturated bonds having terminal carbon-to-carbon unsaturated bonds
-
- 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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
- C09D163/10—Epoxy resins modified by unsaturated 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/26—Thermosensitive 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
- C09D7/63—Additives non-macromolecular organic
-
- 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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The application provides a temperature sensing color-changing material, which comprises the following components in parts by weight: 35-65 parts of epoxy acrylic resin; 40-60 parts of polyurethane acrylic resin; 7-12 parts of temperature-sensitive color-changing powder; 18-22 parts of an organic solvent; 0.2-4 parts of temperature regulator. The application also provides a preparation method of the thermochromic material, which comprises the following steps: mixing epoxy acrylic resin and polyurethane acrylic resin in an organic solvent according to a certain proportion, stirring and heating, and uniformly mixing; and sequentially adding the temperature regulator and the thermochromic powder into the resin mixture according to a certain proportion, heating and stirring, cooling, standing and solidifying, and grinding into powder to obtain the thermochromic material. This application is through using low melting point temperature regulator, and effective narrow discoloration interval improves the temperature precision that discolours for the response speed that discolours. The color-changing temperature is controlled to be 0-5 ℃, the color change is realized under the condition of a refrigerator, and the problem that the color-changing material can not change color quickly at low temperature at present is solved.
Description
Technical Field
The application relates to the technical field of low-temperature composite materials, in particular to a thermochromic material and a preparation method thereof.
Background
The temperature sensing color changing material is a functional sensing material which can change specific color along with the temperature change, and has the characteristics of two-dimensional surface temperature indication, visual visibility by naked eyes and the like. The color can be changed in a certain temperature range by mixing the temperature-sensitive color-changing pigments with different components, and the temperature-sensitive color-changing material is usually made into a sensing coating for use. On being applied to refrigerator outside coating with temperature sensing color-changing material, can make temperature sensing color-changing material receive the temperature and produce the color change after influencing to visual the temperature, the user can know the inside temperature of refrigerator through observing the outer color change of refrigerator, makes its inside edible material or beverage keep good new freshness.
At present, the color-changing temperature of the temperature-sensitive color-changing material on the market is more than 10 ℃, and the traditional temperature-sensitive color-changing material is not suitable for low-temperature environment. Patent CN107474623A discloses a low-temperature reversible thermochromic coating and a preparation method thereof, and the coating comprises the following components in parts by weight: 8-25 parts of UV curing glue, 3-8 parts of thermochromic microcapsules, 2-5 parts of glass fiber, 3-8 parts of graphene, 2-6 parts of light calcium carbonate, 2-10 parts of talcum powder, 0.01-0.5 part of anti-aging agent, 0.01-1.5 parts of dispersing agent, 0.2-0.8 part of flatting agent, 0.1-0.6 part of defoaming agent and 50-75 parts of solvent.
At present, no temperature sensing color change material can meet the requirements of accurate temperature change precision, high color change stability and high color change speed aiming at the low-temperature environment in the refrigerator.
Disclosure of Invention
The application aims to provide a novel temperature-sensitive color-changing material and a preparation method thereof, and the defect that the temperature-sensitive color-changing material cannot be used under the low-temperature condition or the defect that the color-changing speed is low in the prior art is overcome through formula design, so that the temperature-sensitive color-changing material can be used under the low-temperature condition of a refrigerator and the like.
The technical purpose is realized by the following scheme:
in one aspect, the present application provides a thermochromic material comprising the following components by weight:
epoxy acrylic resin: 35-65 parts;
urethane acrylic resin: 40-60 parts;
temperature-sensitive color-changing powder: 7-12 parts;
organic solvent: 18-22 parts;
temperature regulator: 0.2 to 4 portions.
Preferably, the temperature regulator is one or more of methyl laurate, monomethyl adipate or dimethyl adipate, the melting point of the temperature regulator is not higher than 10 ℃, the temperature-sensitive color-changing material can respond to temperature change in a low-temperature environment by adding the temperature regulator with a low melting point, and compared with other lipid temperature regulators, the accuracy of color-changing temperature is improved, and the color-changing response speed is accelerated. The melting point of the methyl laurate is 5 ℃, and the methyl laurate is preferably used as a temperature regulator, so that the discoloration response speed of the temperature sensing material can be further improved.
Preferably, the temperature-sensitive color-changing powder is one or more of triarylmethane phthalide type color-changing powder or indoline phthalide type color-changing powder.
Preferably, the organic solvent is one or more of ethanol, isopropanol or propylene glycol.
Further, the thermochromic material further comprises the following components in parts by weight:
emulsifier: 7-11 parts;
curing agent: 2 to 8 portions.
Preferably, the emulsifier is polyvinyl alcohol and the curing agent is ethylenediamine.
By adding the emulsifier and the curing agent, the thermochromic material can obtain a structure similar to a microcapsule, and the stability of the thermochromic material can be further improved.
On the other hand, the application also provides a preparation method of the thermochromic material, which is used for preparing the thermochromic material, and the preparation method comprises the following steps:
the method comprises the following steps: mixing epoxy acrylic resin and polyurethane acrylic resin in an organic solvent according to a proportion, stirring and heating, and uniformly mixing to obtain a resin mixture;
step two: and sequentially adding the temperature regulator and the thermochromic powder into the resin mixture according to a certain proportion, heating and stirring, cooling, standing and solidifying, and grinding into powder to obtain the thermochromic material.
Further, the heating temperature of stirring and heating in the step one is 120-170 ℃, and the stirring speed is 1000r/min.
Further, the heating temperature for heating and stirring in the step two is 130-180 ℃, and the stirring time is 8 hours; the cooling and standing time is 3-6 h.
Further, in the second step, the temperature regulator and the thermochromic powder are sequentially added into the resin mixture in proportion, heated and stirred, cooled, kept stand and solidified, and ground into powder, and the method further comprises the following steps:
dissolving the powder in ethyl acetate to obtain a mixed solution, adding the mixed solution into water, adding an emulsifier in proportion, emulsifying at the temperature of 80-100 ℃, adding a curing agent in proportion for reaction, washing, and filtering to obtain the thermochromic material.
Compared with the prior art, the thermochromic material and the preparation method thereof provided by the invention have the following beneficial effects:
this application is through using low melting point temperature regulator, and effective narrow discoloration interval improves the temperature precision that discolours for the response speed that discolours. The following requirements can be met:
1. the color-changing temperature is adjustable between 0 and 5 ℃;
2. the accuracy of the color changing temperature is high and is 3-5 ℃;
3. the color change response speed is high and is 3-6s;
4. the stability is better.
In addition, the thermochromic material is prepared into a microcapsule-like structure, so that the thermal stability, color change cyclicity and solvent and acid and alkali resistance of the thermochromic material are improved, and the thermochromic material can be completely stored at room temperature and can be recycled.
Detailed Description
The technical solutions in the present application will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Example 1
The raw materials are prepared according to the following formula by weight:
epoxy acrylic resin: 40 parts of a mixture;
polyurethane acrylic resin: 60 parts;
triarylmethane phthalide type color-changing powder: 10 parts of (A);
ethanol: 20 parts of a binder;
methyl laurate: 4 parts of a mixture;
polyvinyl alcohol: 10 parts of (A);
ethylene diamine: 5 parts of the raw materials.
The preparation method comprises the following steps:
step 1: mixing epoxy acrylic resin and polyurethane acrylic resin in ethanol in proportion, heating to 150 ℃, stirring at the rotating speed of 1000r/min, and uniformly mixing to obtain a resin mixture;
step 2: sequentially adding methyl laurate and triarylmethane phthalide type color-changing powder into the resin mixture according to a certain proportion, heating to 150 ℃, stirring for 8 hours, cooling and standing for 4 hours until the product is solidified, and grinding into powder;
and step 3: dissolving the powder in ethyl acetate to obtain a mixed solution, adding the mixed solution into water, adding polyvinyl alcohol in proportion, emulsifying the mixed material at 100 ℃, adding ethylenediamine in proportion for reaction after emulsification is finished, and washing and filtering a product after reaction is finished to obtain the thermochromic material.
Example 2
The raw materials are prepared according to the following formula by weight:
epoxy acrylic resin: 50 parts of a mixture;
polyurethane acrylic resin: 50 parts of a mixture;
triarylmethane phthalide type color-changing powder: 12 parts of (1);
ethanol: 16 parts of a mixture;
methyl laurate: 3.5 parts;
polyvinyl alcohol: 9 parts of (1);
ethylene diamine: 5 parts of the raw materials.
The preparation method comprises the following steps:
step 1: mixing epoxy acrylic resin and polyurethane acrylic resin in ethanol according to a proportion, heating to 160 ℃, stirring at a rotating speed of 1000r/min, and uniformly mixing to obtain a resin mixture;
step 2: sequentially adding methyl laurate and triarylmethane phthalide type color-changing powder into the resin mixture according to a certain proportion, heating to 180 ℃, stirring for 8 hours, cooling and standing for 6 hours until the product is solidified, and grinding into powder;
and 3, step 3: dissolving the powder in ethyl acetate to obtain a mixed solution, adding the mixed solution into water, adding polyvinyl alcohol in proportion, emulsifying the mixed material at 100 ℃, adding ethylenediamine in proportion for reaction after emulsification is finished, and washing and filtering a product after reaction is finished to obtain the thermochromic material.
Example 3
The raw materials are prepared according to the following formula by weight:
epoxy acrylic resin: 40 parts of a binder;
polyurethane acrylic resin: 50 parts of a mixture;
indolylphthalein type color-changing powder: 7 parts;
isopropyl alcohol: 18 parts of a mixture;
methyl laurate: 3 parts of a mixture;
polyvinyl alcohol: 8 parts of a mixture;
ethylene diamine: and 3 parts.
The preparation method comprises the following steps:
step 1: mixing epoxy acrylic resin and polyurethane acrylic resin in isopropanol according to a proportion, heating to 130 ℃, stirring at a rotating speed of 1000r/min, and uniformly mixing to obtain a resin mixture;
and 2, step: sequentially adding methyl laurate and indoline phthalide type color-changing powder into the resin mixture according to a certain proportion, heating to 150 ℃, stirring for 8h, cooling and standing for 4h until the product is solidified, and grinding into powder;
and step 3: dissolving the powder in ethyl acetate to obtain a mixed solution, adding the mixed solution into water, adding polyvinyl alcohol in proportion, emulsifying the mixed material at 80 ℃, adding ethylenediamine in proportion for reaction after emulsification is finished, and washing and filtering a product after reaction is finished to obtain the thermochromic material.
Example 4
The raw materials are prepared according to the following formula by weight:
epoxy acrylic resin: 40 parts of a mixture;
polyurethane acrylic resin: 60 parts;
triarylmethane phthalide type color-changing powder: 10 parts of (A);
ethanol: 20 parts of (1);
monomethyl adipate: 4 parts of a mixture;
polyvinyl alcohol: 10 parts of (A);
ethylene diamine: 5 parts of the raw materials.
The preparation method comprises the following steps:
step 1: mixing epoxy acrylic resin and polyurethane acrylic resin in ethanol in proportion, heating to 150 ℃, stirring at the rotating speed of 1000r/min, and uniformly mixing to obtain a resin mixture;
step 2: sequentially adding monomethyl adipate and triarylmethane phthalide type color-changing powder into the resin mixture according to a certain proportion, heating to 150 ℃, stirring for 8h, cooling and standing for 4h until the product is solidified, and grinding into powder;
and step 3: dissolving the powder in ethyl acetate to obtain a mixed solution, adding the mixed solution into water, adding polyvinyl alcohol in proportion, emulsifying the mixed material at 100 ℃, adding ethylenediamine in proportion for reaction after emulsification is finished, and washing and filtering a product after reaction is finished to obtain the thermochromic material.
Example 5
The raw materials are prepared according to the following formula by weight:
epoxy acrylic resin: 40 parts of a binder;
polyurethane acrylic resin: 60 parts;
indolin phthalide type color-changing powder: 10 parts of (A);
ethanol: 20 parts of a binder;
monomethyl adipate: 4 parts of a mixture;
polyvinyl alcohol: 10 parts of (A);
ethylene diamine: 5 parts of the raw materials.
The preparation method comprises the following steps:
step 1: mixing epoxy acrylic resin and polyurethane acrylic resin in ethanol in proportion, heating to 150 ℃, stirring at the rotating speed of 1000r/min, and uniformly mixing to obtain a resin mixture;
step 2: sequentially adding monomethyl adipate and indoline phthalide type color-changing powder into the resin mixture according to a certain proportion, heating to 150 ℃, stirring for 8h, cooling and standing for 4h until the product is solidified, and grinding into powder;
and step 3: dissolving the powder in ethyl acetate to obtain a mixed solution, adding the mixed solution into water, adding polyvinyl alcohol in proportion, emulsifying the mixed material at 100 ℃, adding ethylenediamine in proportion for reaction after emulsification is finished, and washing and filtering a product after reaction is finished to obtain the thermochromic material.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The thermochromic material is characterized by comprising the following components in parts by weight:
epoxy acrylic resin: 35-65 parts;
polyurethane acrylic resin: 40-60 parts;
temperature-sensitive color-changing powder: 7-12 parts;
organic solvent: 18-22 parts;
temperature regulator: 0.2 to 4 portions.
2. The thermochromic material of claim 1, wherein the temperature-regulating agent is one or more of methyl laurate, monomethyl adipate, or dimethyl adipate.
3. The thermochromic material of claim 1, wherein the thermochromic powder is one or more of triarylmethane phthalide type thermochromic powder or indoline phthalide type thermochromic powder.
4. The thermochromic material of claim 1, wherein the organic solvent is one or more of ethanol, isopropyl alcohol, or propylene glycol.
5. The thermochromic material of claim 1, further comprising the following components by weight:
emulsifier: 7-11 parts;
curing agent: 2-8 parts.
6. The thermochromic material of claim 5, wherein the emulsifier is polyvinyl alcohol and the curing agent is ethylenediamine.
7. A method for preparing a thermochromic material, which is used for preparing the thermochromic material of any one of claims 1 to 6, and is characterized by comprising the steps of:
mixing epoxy acrylic resin and polyurethane acrylic resin in an organic solvent according to a proportion, stirring and heating, and uniformly mixing to obtain a resin mixture;
and sequentially adding the temperature regulator and the thermochromic powder into the resin mixture according to a certain proportion, heating and stirring, cooling, standing and solidifying, and grinding into powder to obtain the thermochromic material.
8. The method according to claim 7, wherein the epoxy acrylic resin and the urethane acrylic resin are mixed in the organic solvent at a ratio, and the heating temperature for stirring and heating is 120-170 ℃, and the stirring rotation speed is 1000r/min.
9. The preparation method of the thermochromic material according to claim 7, wherein the temperature regulator and the thermochromic powder are sequentially added into the resin mixture in proportion, the heating temperature for heating and stirring is 130-180 ℃, and the stirring time is 8 hours; the cooling and standing time is 3-6 h.
10. The preparation method of the thermochromic material according to claim 7, wherein the steps of sequentially adding the temperature regulator and the thermochromic powder into the resin mixture in proportion, heating and stirring, cooling, standing, solidifying, and grinding into powder further comprise:
dissolving the powder in ethyl acetate to obtain a mixed solution, adding the mixed solution into water, adding an emulsifier according to a proportion, emulsifying at the temperature of 80-100 ℃, adding a curing agent according to a proportion, reacting, washing and filtering to obtain the thermochromic material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211002933.5A CN115197640A (en) | 2022-08-19 | 2022-08-19 | Thermochromic material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211002933.5A CN115197640A (en) | 2022-08-19 | 2022-08-19 | Thermochromic material and preparation method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104497847A (en) * | 2014-12-31 | 2015-04-08 | 浙江佑谦特种材料有限公司 | Thermochromic water-based UV coating and preparation method thereof |
| CN104604551A (en) * | 2015-01-29 | 2015-05-13 | 宁波远鸿生物科技有限公司 | Method for preparing thermochromic preserved flowers |
| CN111054283A (en) * | 2019-12-06 | 2020-04-24 | 深圳先进电子材料国际创新研究院 | Phase change energy storage microcapsule with polyurethane modified organic silicon resin as shell material and preparation method thereof |
| CN111574888A (en) * | 2020-04-23 | 2020-08-25 | 武汉中科先进技术研究院有限公司 | Thermochromic material, preparation method thereof and thermochromic microcapsule containing thermochromic material |
| CN112280353A (en) * | 2020-10-23 | 2021-01-29 | 浙江画之都文化创意有限公司 | Antibacterial and ultraviolet-resistant thermochromic wax color paint and preparation method thereof |
| CN112358767A (en) * | 2020-11-11 | 2021-02-12 | 深圳市崯涛油墨科技有限公司 | Reversible thermochromic LED curing ink and preparation method thereof |
-
2022
- 2022-08-19 CN CN202211002933.5A patent/CN115197640A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104497847A (en) * | 2014-12-31 | 2015-04-08 | 浙江佑谦特种材料有限公司 | Thermochromic water-based UV coating and preparation method thereof |
| CN104604551A (en) * | 2015-01-29 | 2015-05-13 | 宁波远鸿生物科技有限公司 | Method for preparing thermochromic preserved flowers |
| CN111054283A (en) * | 2019-12-06 | 2020-04-24 | 深圳先进电子材料国际创新研究院 | Phase change energy storage microcapsule with polyurethane modified organic silicon resin as shell material and preparation method thereof |
| CN111574888A (en) * | 2020-04-23 | 2020-08-25 | 武汉中科先进技术研究院有限公司 | Thermochromic material, preparation method thereof and thermochromic microcapsule containing thermochromic material |
| CN112280353A (en) * | 2020-10-23 | 2021-01-29 | 浙江画之都文化创意有限公司 | Antibacterial and ultraviolet-resistant thermochromic wax color paint and preparation method thereof |
| CN112358767A (en) * | 2020-11-11 | 2021-02-12 | 深圳市崯涛油墨科技有限公司 | Reversible thermochromic LED curing ink and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| 于勇等 * |
| 于勇等, vol. 35, pages 26 - 29 * |
| 于永;高艳阳;: "三芳甲烷苯酞类可逆热致变色材料", 化工技术与开发, no. 10, pages 26 - 29 * |
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