CN113072847A - Thermochromic pavement coating with autonomous temperature regulation function and preparation method thereof - Google Patents
Thermochromic pavement coating with autonomous temperature regulation function and preparation method thereof Download PDFInfo
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- 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
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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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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
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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
- C09D5/32—Radiation-absorbing paints
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
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- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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Abstract
A thermochromic pavement coating with an automatic temperature regulation function comprises the following raw materials in parts by mass: 18-30 parts of pigment and filler, 50-60 parts of water-based silicone-acrylic emulsion, 5-10 parts of various additives, 5-10 parts of film-forming assistant and 20-30 parts of deionized water. The pigment and the filler comprise: 2-5 parts of titanium dioxide and 16-25 parts of thermochromic powder. The mass ratio of the titanium dioxide to the thermochromic powder is 1 (4-10); the titanium dioxide is rutile titanium dioxide; the titanium dioxide had an average particle diameter of 0.2. mu.m. The pavement coating reflects more solar radiation under the high-temperature environmental condition in summer, and the temperature of a road surface is reduced more effectively; the road surface can absorb more solar radiation under the low-temperature environmental condition in winter, the continuous reduction of the temperature of the road surface by the high-reflection coating under the low-temperature condition is avoided, and the road surface is ensured to be at a proper temperature. Meanwhile, the brightness of the coating before and after color change is controlled within a medium and low brightness range, and the problems of glare, urban light pollution and the like caused by a light-color high-reflection coating can be effectively relieved.
Description
Technical Field
The invention belongs to the field of pavement temperature regulation technology and materials, and relates to an organic reversible thermochromic coating with an autonomous pavement temperature regulation function and a preparation method thereof.
Background
The summer road surface temperature of the asphalt pavement reaches 70-80 ℃, and diseases such as rutting, pushing, crowding and the like are easily formed under the action of running load, so that the running safety is threatened, and meanwhile, the service life of the asphalt pavement is greatly shortened. In addition, the urban asphalt pavement can absorb solar radiation, affect the surrounding thermal environment and also aggravate the urban 'heat island effect'. In winter, the phenomena of brittle failure and cracking easily occur along with the reduction of air temperature.
The existing high-reflection cooling coating with fixed color can effectively reduce the temperature of the road surface in summer and relieve the heat island effect, but the continuous reduction of the temperature of the road surface can aggravate the low-temperature cracking phenomenon of the road surface in winter, the service life of the road surface is shortened, and the road surface is more prone to icing and slipping due to low temperature.
The invention discloses a method for preparing reversible thermochromic road surface coatings, for example, the invention with the application number of CN201910701119.4, the method is mainly used for visually warning the road surface instead of adjusting the temperature of the road surface, the used pigment and filler only comprises thermochromic materials, and the prepared coatings are easily in a semitransparent state in a light color state when being coated on the road surface, have poor covering power and can be only partially coated on the road surface in a pattern form in practical application.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a thermochromic pavement coating with an automatic temperature regulation function and a preparation method thereof.
The purpose of the invention can be realized by the following technical scheme:
a thermochromic pavement coating with an automatic temperature regulation function comprises the following raw materials in parts by mass: 18-30 parts of pigment and filler, 50-60 parts of water-based silicone-acrylic emulsion, 5-10 parts of various additives, 5-10 parts of film-forming assistant and 20-30 parts of deionized water.
Further, the pigment and filler comprises: 2-5 parts of titanium dioxide and 16-25 parts of thermochromic powder.
Preferably, the mass ratio of the titanium dioxide to the thermochromic powder is 1 (4-10); preferably, the titanium dioxide is rutile titanium dioxide; preferably, the titanium dioxide has an average particle size of 0.2 μm.
The thermochromic powder is a microcapsule type thermochromic powder, and the raw materials comprise 1-5% of microcapsule shell material for protecting a core material, 2-10% of leuco agent (electron donor), 5-15% of color developing agent (electron acceptor) and 50-80% of solvent by mass.
The microcapsule shell material is melamine formaldehyde resin; the leuco agent is one or more of diphenyl methane series, fluorane series and indolyl phthalide series dyes; preferably, the compound is one or more of 3-diethylamino-6-methyl-7-2, 4-dimethyl anilinofluorane, 3-bis (4-dimethylaminophenyl) -6-dimethylamino phthalide, 2-anilino-6-diethylaminofluorane and 3, 6-dimethoxy fluorane; the color developing agent is a phenolic resin compound; preferably, 4-isopropylidenediphenol (bisphenol A); the solvent is one or more of alcohols, esters, ethers, ketones and carboxylic acids; preferably, the alcohol is one or more of methyl stearate, dodecanol, tetradecanol, hexadecanol and 1-octadecanol.
Preferably, the average grain diameter of the microcapsule thermochromic powder is 3-10 mu m, and the discoloration temperature is 30-35 ℃. When the temperature is lower than the value, the thermochromic powder presents darker colors, and when the temperature is higher than the value, the thermochromic powder gradually fades to present a white light color state, and the process is reversible.
Furthermore, the rutile titanium dioxide powder has high reflectivity (>0.8) in visible light and near infrared light bands, and has strong covering power (the refractive index is 2.75, which is the largest one of all white pigments, and the covering power is > 90%), so that the coating can be prevented from being transparent after being lightened at high temperature, and the reflection cooling effect of the thermochromic coating under the high-temperature condition can be further improved.
Because the resin road coating is easy to age and contains organic volatile compounds (VOC), and the coating is easy to cause certain harm to the surrounding environment and human health during construction, the coating adopts the water-based acrylic emulsion which has less pollution, low price and convenient construction, and adopts the organic silicon modification to improve the stain resistance and the aging resistance of the emulsion.
The additive comprises a leveling agent, a dispersing agent and a water-based defoaming agent; preferably, the mass ratio of each additive is 1:1: 1; preferably, the leveling agent is a polyurethane RM-2020 type aqueous leveling agent, the dispersing agent is an SN5040 sodium polycarboxylate dispersing agent, and the defoaming agent is an S-10 type aqueous defoaming agent. The leveling agent can improve the coverage of the coating, improve the leveling property and ensure the uniformity of film formation; the coalescing performance of the coating can be improved by the aid of the film-forming additive; the dispersant can improve the wettability, the dispersibility and the stability of the pigment and filler in the emulsion; the water-based defoaming agent can reduce surface tension, reduce the phenomenon of bubbles to cause craters on the surface of the water-based coating and improve the overall performance of the coating.
Preferably, the coalescing agent is a coalescing agent of the ester alcohol 12Texanol (2,2, 4-trimethyl-1, 3-pentanediol monoisobutyrate) type.
The coating also comprises anti-skid granules capable of increasing the friction coefficient of the coating; preferably, the dosage of the anti-skid granules is 0.6-1.0 kg/m2(ii) a Preferably, the non-slip particulate material is machine-made sand.
The preparation method of the thermochromic pavement coating with the automatic temperature regulation function comprises the following steps:
(1) adding the aqueous silicone-acrylate emulsion and titanium dioxide into a stirrer according to a proportion, and uniformly stirring at a low speed;
(2) evenly mixing the leveling agent, the dispersing agent and the defoaming agent in equal proportion;
(3) adding the temperature-sensitive color-changing powder, the three well-mixed auxiliary agents and water into a stirrer in proportion, and uniformly stirring at high speed;
(4) and finally, adding a film forming aid, and uniformly stirring at a low speed to obtain the thermochromic pavement coating.
The method can fully mix the raw materials to obtain the coating with excellent performances in all aspects.
Further, the method also comprises the following steps: uniformly coating a layer of finally obtained thermochromic coating on the pavement, wherein the coating weight is 0.5-0.8 kg/m2(ii) a Spreading the anti-skid granules after finishing coating, wherein the using amount of the anti-skid granules is 0.6-1.0 kg/m2(ii) a First of allAfter the layer coating is hardened and the antiskid granules are fixed, coating a second layer coating with the coating weight of 0.5-0.8 kg/m2. And curing the coating under natural conditions after finishing brushing to obtain the thermochromic pavement coating.
Preferably, in the step (1), the mixture is uniformly stirred at a low speed for 10 to 15 minutes, and the rotating speed is 100 to 150 revolutions per minute; in the step (3), uniformly stirring at a high speed for 15-25 minutes at a rotating speed of 150-250 revolutions per minute; in the step (4), the mixture is uniformly stirred at a low speed of 100-150 rpm for 15-25 minutes.
Compared with the prior art, the invention has the following characteristics:
1) the invention adopts composite functional pigment and filler, combines titanium dioxide material with stronger covering power and high reflectivity with reversible thermochromic material to prepare a pavement coating, adjusts chromatic values (L brightness, red-green value a, yellow-blue value b) before and after the color of the coating is changed and the reflectivity of each wave band through a large number of tests, and determines the optimal proportion of the two materials in the coating, so that the coating has higher reflectivity and brightness at high temperature and lower reflectivity and brightness at low temperature compared with the high-reflection pavement coating with the same color system and fixed color, and the mixing amount of the thermochromic material can meet the use requirement at lower cost.
2) Compared with a high-reflection pavement coating with the same color system and fixed color, the organic reversible thermochromic pavement coating disclosed by the invention has the advantages that the pavement can reflect more solar radiation under the high-temperature environment condition in summer, the pavement surface temperature is effectively reduced, the temperature peak value is reduced, the diseases such as rutting caused by high temperature are relieved, the pavement durability is improved, and the urban heat island effect is relieved.
3) Compared with the high-reflection pavement coating with the same color system and fixed color, the organic reversible thermochromic pavement coating disclosed by the invention has the advantages that the pavement can absorb more solar radiation under the low-temperature environmental condition in winter, the continuous reduction of the pavement temperature by the high-reflection coating under the low-temperature condition is avoided, the pavement is always kept in a temperature range suitable for the good performance of the pavement, the phenomena of low-temperature cracking and icing of the pavement in winter are relieved to a certain extent, the service life of the pavement is prolonged, and the driving safety is improved.
4) The brightness of the coating before and after color change is controlled within the range of medium and low brightness, compared with the common white high-reflection coating, the reflectivity of the near infrared band is only improved, the reflectivity of the visible band before and after color change is still low, the negative effects of the light-color coating with overhigh reflectivity of the visible band on the visual environment of the pavement, such as glare, light pollution and the like, can be relieved, and the aim of effectively regulating the temperature is fulfilled.
Drawings
Fig. 1(a) is one of the reflectance contrast plots (red and white coating reflectance spectra) for an organic reversible thermochromic pavement coating and a high-reflective pavement coating of the same color system and fixed color.
Fig. 1(b) is a second graph of reflectance contrast of an organic reversible thermochromic pavement coating and a high-reflective pavement coating of the same color system and fixed color (black and white coating reflection spectra).
Fig. 2(a) is one of the comparison graphs of the cooling effect of the organic reversible thermochromic pavement coating and the high-reflection pavement coating with the same color system and fixed color according to the present invention (temperature change graph of the organic reversible thermochromic pavement coating).
Fig. 2(b) is a second comparison graph (temperature variation graph of the same-color high-reflection pavement coating) of the cooling effect of the organic reversible thermochromic pavement coating and the same-color high-reflection pavement coating with fixed color according to the present invention.
Detailed Description
The invention adopts the composite functional pigment and filler, combines the titanium dioxide material with stronger covering power and high reflectivity with the reversible thermochromic material to prepare the pavement coating, adjusts the chromatic values of the coating before and after discoloration and the reflectivity of each wave band through a large number of tests, determines the optimal proportion of the two materials in the coating, and achieves the aim of effectively adjusting the road surface temperature from the high and low temperature aspects. Meanwhile, the brightness of the coating before and after color change is controlled within a medium and low brightness range, and the problems of glare, urban light pollution and the like caused by a light-color high-reflection coating can be effectively relieved.
The invention is described in detail below with reference to the figures and specific embodiments.
Examples 1 to 4 are raw material compositions of three organic reversible thermochromic pavement coatings of different colors, as shown in table 1 below:
TABLE 1 raw material composition of organic reversible thermochromic pavement coatings
| Component (unit g) | Example 1 | Example 2 | Example 3 | Example 4 |
| Aqueous silicone |
60 | 50 | 60 | 55 |
| |
2 | 4 | 5 | 3 |
| Microcapsule type thermochromic powder | Red toner: 20 | Black powder: 16 | Blue toner: 25 | Brown toner: 24 |
| |
2 | 2 | 3 | 2 |
| |
2 | 2 | 3 | 2 |
| |
2 | 2 | 3 | 2 |
| Film forming aid | 5 | 5 | 10 | 8 |
| Deionized |
20 | 25 | 30 | 25 |
The flatting agent is a polyurethane RM-2020 type water-based flatting agent, the film-forming assistant is ester alcohol 12Texanol (2,2, 4-trimethyl-1, 3-pentanediol monoisobutyrate) type film-forming assistant, the dispersing agent is SN5040 sodium polycarboxylate dispersing agent, and the defoaming agent is an S-10 type water-based defoaming agent. The rutile titanium dioxide used had a particle size of 0.2. mu.m.
The microcapsule type organic reversible temperature-sensitive color-changing powder consists of a microcapsule shell material for protecting a core material, a leuco agent, a color developing agent and a solvent, wherein the color-changing temperature is 31 ℃, and the microcapsule type organic reversible temperature-sensitive color-changing powder is produced by Chongyu scientific and technological Co. Wherein the microcapsule shell material is melamine formaldehyde resin, and the leuco agent is one or more of diphenyl methane series, fluorane series and indolyl phthalide series dyes; the developer is phenolic resin compound; the solvent is one or more of alcohols, esters, ethers, ketones and carboxylic acids. Specifically, the leuco agents used in the thermochromic powders of examples 1 to 3 were three different fluorane dyes, the color-developing agent was 4, 4-isopropylidenediphenol (bisphenol a), and the solvent was methyl stearate.
The preparation method of the organic reversible thermochromic pavement coatings of examples 1 to 4 comprises the following steps:
1) adding the water-based silicone-acrylic emulsion and rutile type titanium dioxide into a stirrer in proportion, and uniformly stirring for 10-15 minutes at the rotating speed of 100-150 revolutions per minute;
2) evenly mixing the leveling agent, the dispersing agent and the defoaming agent in equal proportion;
3) adding the temperature-sensitive color-changing powder, the mixed three additives and water into a stirrer in proportion, and uniformly stirring for 15-25 minutes at a rotating speed of 150-250 revolutions per minute;
4) finally, adding the film forming aid, adjusting the rotating speed to be 100-150 rpm, and stirring for 15-25 minutes.
The reflectance test was performed for representative examples 1 and 2. After the coating preparation was completed, it was applied to a 6cm x 6cm aluminum plate, dried and cured at room temperature around 25 ℃ for at least 24 hours, and then tested. The spectral reflection curve of the coating is measured by an ultraviolet/visible/near-infrared spectrophotometer, and the measurement wavelength range is 250-2500 nm. The luminance value L of the material was measured by a high precision portable spectrocolorimeter. Spectral reflection curves and colorimetric values of the thermochromic coating in a dark color state (20 ℃) and a light color state (35 ℃) are respectively measured and compared with a high-reflection coating material which is in the same color system and has fixed color. The results are shown in the following table and in FIG. 1.
| Type of coating | Total reflection rate | Brightness value |
| Example 1(20 ℃ C.) | 0.26 | 35.1 |
| Fixed red high-reflection coating | 0.41 | 53.2 |
| Example 1(35 ℃ C.) | 0.53 | 74.1 |
| Example 2(20 ℃ C.) | 0.23 | 31.2 |
| Fixed gray highly reflective coating | 0.39 | 52.1 |
| Example 2(35 ℃ C.) | 0.56 | 76.1 |
| Fixed white high reflective coating | 0.67 | 97.3 |
As can be seen from the comparison between fig. 1 and the above table, the total reflectance of the two thermochromic coatings of example 1 (red-white) and example 2 (gray-white) is lower than that of the high-reflective coating of the same color system and with fixed color in the low-temperature dark color state, and the total reflectance of the high-temperature light color state is maintained at a higher level and higher than that of the high-reflective coating of the same color and close to that of the white titanium dioxide coating, so that the thermochromic coatings absorb less solar radiation at high temperature in summer, and achieve a higher cooling range; and in winter, the solar energy collector absorbs more solar radiation and maintains the temperature of the road surface to a certain extent.
Compared with the reversible thermochromic coating which has the advantages that the reflectivity of a near infrared band is only improved, the visible band is still low, the negative effects (glare and light pollution) of a light-colored coating with excessively high visible reflectivity on the visual environment of a road surface can be relieved, and the aim of effectively regulating the temperature is fulfilled.
The indoor cooling effect test was performed for representative examples 1 and 2. The thermochromic coatings and the high-reflection coatings which are in the same color system and have fixed colors in the examples 1 and 2 are respectively coated on the surface of the rotary compaction test piece, and the coating amount is 1kg/m2And heat insulation between the periphery of the test piece and the bottom layer is well performed. The solar radiation was simulated using a 1000W iodine tungsten lamp and was continuously irradiated for 7 hours, and the temperature of the surface of the test piece was recorded every 30 seconds using a thermocouple, with the results shown in FIG. 2.
As can be seen from fig. 2, the reversible thermochromic road surface coatings of example 1 and example 2 can effectively reduce the temperature of the road surface under the high-temperature solar radiation environment condition compared with the high-reflection coating with the same color system and fixed color, example 1 has a higher cooling range of 10 to 13 ℃, the cooling value is improved by 3 to 5 ℃ compared with the same-color high-reflection coating, and the reversible thermochromic road surface coating plays a role in reducing the peak value of the high temperature of the road surface.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (12)
1. The thermochromic pavement coating with the autonomous temperature regulation function is characterized by comprising the following raw materials in parts by mass: 18-30 parts of pigment and filler, 50-60 parts of water-based silicone-acrylic emulsion, 5-10 parts of various additives, 5-10 parts of film-forming assistant and 20-30 parts of deionized water.
2. The thermochromic pavement coating with an autonomous temperature adjustment function according to claim 1, wherein the color filler comprises: 2-5 parts of titanium dioxide and 16-25 parts of thermochromic powder.
3. The thermochromic pavement coating having an autonomous temperature adjustment function according to claim 2, wherein the mass ratio of the titanium dioxide to the thermochromic powder is 1 (4-10); preferably, the titanium dioxide is rutile titanium dioxide; preferably, the titanium dioxide has an average particle size of 0.2 μm.
4. Thermochromic pavement coating with autonomous temperature regulation according to claim 2, characterized in that: the thermochromic powder is a microcapsule type thermochromic powder, and the raw materials comprise 1-5% of microcapsule shell material for protecting a core material, 2-10% of leuco agent, 5-15% of color developing agent and 50-80% of solvent by mass.
5. Thermochromic pavement coating with autonomous temperature regulation according to claim 4, characterized in that: the microcapsule shell material is melamine formaldehyde resin; the leuco agent is one or more of diphenyl methane series, fluorane series and indolyl phthalide series dyes; preferably, the compound is one or more of 3-diethylamino-6-methyl-7-2, 4-dimethyl anilinofluorane, 3-bis (4-dimethylaminophenyl) -6-dimethylamino phthalide, 2-anilino-6-diethylaminofluorane and 3, 6-dimethoxy fluorane; the color developing agent is a phenolic resin compound; preferably, 4-isopropylidenediphenol (bisphenol A); the solvent is one or more of alcohols, esters, ethers, ketones and carboxylic acids; preferably, the alcohol is one or more of methyl stearate, dodecanol, tetradecanol, hexadecanol and 1-octadecanol.
6. Thermochromic pavement coating with autonomous temperature regulation according to claim 4, characterized in that: the average grain diameter of the microcapsule type thermochromic powder is 3-10 mu m, and the discoloration temperature is 30-35 ℃.
7. Thermochromic pavement coating with autonomous temperature regulation according to claim 1, characterized in that: the film-forming assistant is ester alcohol 12Texanol (2,2, 4-trimethyl-1, 3-pentanediol monoisobutyrate) type film-forming assistant.
8. Thermochromic pavement coating with autonomous temperature regulation according to claim 1, characterized in that: the additive comprises a leveling agent, a dispersing agent and a water-based defoaming agent; preferably, the mass ratio of each additive is 1:1: 1; preferably, the leveling agent is a polyurethane RM-2020 type aqueous leveling agent, the dispersing agent is an SN5040 sodium polycarboxylate dispersing agent, and the defoaming agent is an S-10 type aqueous defoaming agent.
9. Thermochromic pavement coating with autonomous temperature regulation according to claim 1, characterized in that: the coating also comprises anti-skid granules capable of increasing the friction coefficient of the coating; preferably, the dosage of the anti-skid granules is 0.6-1.0 kg/m2(ii) a Preferably, the non-slip particulate material is machine-made sand.
10. Method for the preparation of a thermochromic pavement coating with autonomous temperature regulation according to any of claims 1 to 8, characterized in that it comprises the following steps:
(1) adding the aqueous silicone-acrylate emulsion and titanium dioxide into a stirrer according to a proportion, and uniformly stirring at a low speed;
(2) evenly mixing the leveling agent, the dispersing agent and the defoaming agent in equal proportion;
(3) adding the temperature-sensitive color-changing powder, the three well-mixed auxiliary agents and water into a stirrer in proportion, and uniformly stirring at high speed;
(4) and finally, adding a film forming aid, and uniformly stirring at a low speed to obtain the thermochromic pavement coating.
11. The method for preparing a thermochromic pavement coating having an autonomous temperature adjustment function according to claim 10, further comprising the steps of: uniformly coating a layer of finally obtained thermochromic coating on the pavement, wherein the coating weight is 0.5-0.8 kg/m2(ii) a Spreading the anti-skid granules after finishing coating, wherein the using amount of the anti-skid granules is 0.6-1.0 kg/m2(ii) a After the first layer of coating is hardened and the anti-skid granules are fixed, coating a second layer of coating, wherein the coating weight is 0.5-0.8 kg/m2(ii) a And curing the coating under natural conditions after finishing brushing to obtain the thermochromic pavement coating.
12. The preparation method of the organic reversible thermochromic coating with the function of autonomously regulating the temperature of the pavement according to claim 10, wherein the preparation method comprises the following steps: in the step (1), uniformly stirring at a low speed for 10-15 minutes, wherein the rotating speed is 100-150 revolutions per minute; in the step (3), uniformly stirring at a high speed for 15-25 minutes at a rotating speed of 150-250 revolutions per minute; in the step (4), the mixture is uniformly stirred at a low speed of 100-150 rpm for 15-25 minutes.
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| CN114479664A (en) * | 2022-01-21 | 2022-05-13 | 同路达(上海)生态科技有限公司 | High-solar-reflectivity cooling type large-gap cement concrete curing agent and preparation method thereof |
| CN115873490A (en) * | 2023-01-03 | 2023-03-31 | 中国科学院兰州化学物理研究所 | Self-regulating photo-thermal anti-icing and deicing coating and coating |
| CN116285442A (en) * | 2023-03-31 | 2023-06-23 | 武汉理工大学 | Carbon-negative and self-temperature-regulating thermochromic coating as well as preparation method and application thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5350633A (en) * | 1992-09-08 | 1994-09-27 | Sakura Color Products Corporation | Thermochromic composition |
| CN103214905A (en) * | 2013-04-17 | 2013-07-24 | 浙江大学 | Thermochromic heat insulation coating and preparation method thereof |
| CN107641398A (en) * | 2017-09-27 | 2018-01-30 | 长安大学 | A kind of low-temperature reversible colour-changing pigment and preparation method, temperature sense road surface identification coating and its preparation method and application |
| CN109971190A (en) * | 2019-03-18 | 2019-07-05 | 东南大学 | A kind of thermochromism pitch and preparation method thereof of the reversible regulation of temperature |
| CN110330831A (en) * | 2019-07-31 | 2019-10-15 | 招商局重庆交通科研设计院有限公司 | A kind of reversible thermochromic road surface coating and preparation method thereof |
| CN112322090A (en) * | 2020-11-15 | 2021-02-05 | 桂林理工大学 | Preparation method of ultraviolet light sensitive reversible color-changing paint for pavement marking |
-
2021
- 2021-03-11 CN CN202110264393.7A patent/CN113072847B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5350633A (en) * | 1992-09-08 | 1994-09-27 | Sakura Color Products Corporation | Thermochromic composition |
| CN103214905A (en) * | 2013-04-17 | 2013-07-24 | 浙江大学 | Thermochromic heat insulation coating and preparation method thereof |
| CN107641398A (en) * | 2017-09-27 | 2018-01-30 | 长安大学 | A kind of low-temperature reversible colour-changing pigment and preparation method, temperature sense road surface identification coating and its preparation method and application |
| CN109971190A (en) * | 2019-03-18 | 2019-07-05 | 东南大学 | A kind of thermochromism pitch and preparation method thereof of the reversible regulation of temperature |
| CN110330831A (en) * | 2019-07-31 | 2019-10-15 | 招商局重庆交通科研设计院有限公司 | A kind of reversible thermochromic road surface coating and preparation method thereof |
| CN112322090A (en) * | 2020-11-15 | 2021-02-05 | 桂林理工大学 | Preparation method of ultraviolet light sensitive reversible color-changing paint for pavement marking |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114479664A (en) * | 2022-01-21 | 2022-05-13 | 同路达(上海)生态科技有限公司 | High-solar-reflectivity cooling type large-gap cement concrete curing agent and preparation method thereof |
| CN115873490A (en) * | 2023-01-03 | 2023-03-31 | 中国科学院兰州化学物理研究所 | Self-regulating photo-thermal anti-icing and deicing coating and coating |
| CN115873490B (en) * | 2023-01-03 | 2024-03-12 | 中国科学院兰州化学物理研究所 | Self-regulating photo-thermal anti-icing deicing coating and coating |
| CN116285442A (en) * | 2023-03-31 | 2023-06-23 | 武汉理工大学 | Carbon-negative and self-temperature-regulating thermochromic coating as well as preparation method and application thereof |
| CN116285442B (en) * | 2023-03-31 | 2024-05-14 | 武汉理工大学 | Carbon-negative and self-temperature-regulating thermochromic coating as well as preparation method and application thereof |
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