CN110669418A - Grey heat-reflection cooling coating and application and preparation method thereof on asphalt pavement - Google Patents
Grey heat-reflection cooling coating and application and preparation method thereof on asphalt pavement Download PDFInfo
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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
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/004—Reflecting paints; Signal paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- 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
- C09D5/18—Fireproof paints including high temperature resistant paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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- Road Paving Structures (AREA)
Abstract
The invention discloses a gray heat-reflection cooling coating and application thereof on an asphalt pavement and a preparation method thereof, wherein the coating comprises the following components, by weight, 100 parts of aqueous polyurethane polymerization emulsion, 1-20 parts of metal oxide miscible pigment, 2-15 parts of heat-reflection filler, 1-10 parts of inorganic hollow micro-particles, 0.1-5 parts of dispersing agent, 1-30 parts of flatting agent, 0.1-5 parts of defoaming agent, 1-10 parts of leveling agent, 3-20 parts of plasticizing agent, 0.2-6 parts of anti-sagging agent and 0.05-2 parts of gelling agent. The grey heat-reflection cooling coating is characterized in that the coating can effectively reflect over 80 percent of near infrared light, is used for road surfaces, house buildings and various steel structure surfaces, and can be reduced by 10-20 ℃ in summer. When the asphalt is used for asphalt pavement, the pavement temperature can be greatly reduced, and damages such as rutting, bag surging and the like caused by high temperature are reduced; especially for urban main roads, can effectively relieve the urban heat island effect and greatly improve the living environment.
Description
Technical Field
The invention relates to a grey heat-reflection cooling coating, and an application and a preparation method thereof on an asphalt pavement. In particular to a grey heat reflection coating which takes aqueous polyurethane polymerization emulsion as a film forming base material and is suitable for asphalt pavement.
Background
In recent years, the 'urban heat island' effect is also aggravated by more frequent summer extreme weather caused by climate changes such as global warming.
The heat reflection pigment and the hollow micro-particles in the grey heat reflection cooling coating can effectively reflect 80% of near infrared light in light, so that the heat absorption of house buildings can be greatly reduced, and the surface temperature of the house buildings can be reduced. However, the damage of the asphalt pavement is accelerated in high-temperature weather, and the prior grey heat-reflecting paint suitable for the surface of the building cannot reach the actual pavement index due to the wear resistance and the skid resistance, so that the paint is not suitable for the asphalt pavement.
For example, CN105925073B discloses a preparation method of a corrosion-resistant super-hydrophobic heat-reflective coating, CN105885595B discloses a preparation method of a self-cleaning organic silicon modified acrylic resin heat-insulating reflective coating, and CN105754427B discloses a preparation method of a self-cleaning colored solar heat-reflective coating, which are applied to buildings and can play a certain cooling effect, but are not suitable for asphalt pavements.
CN105908590B discloses a method for cooling an asphalt pavement, which requires milling the original pavement, spreading slurry seal and wearing layer, and has a complex construction process, which is not directly applied to the existing asphalt pavement. CN101824269B discloses a heat-reflecting coating for asphalt pavement, but the pigments used in the invention are all color series, and the color coatings can cause serious influence on normal driving of drivers and are not suitable for large-area application of asphalt pavement at all. In patent CN103666174B further disclosed by its authors, the resin was changed from acrylic modified polyester resin to fluoro (meth) acrylate, and the others were not greatly modified and the key color problem was not studied. The patents are either complicated to implement or not suitable for specific actual roads, and have no actual popularization value.
Currently, the only countries where heat reflective coatings are actually applied on asphalt pavement are japan, but the application of this technology in japan is very limited due to the extremely expensive cost of the coatings.
Secondly, the prior domestic heat-reflecting coating resin material adopts acrylic resin, epoxy resin or water-based acrylic resin, the pigment and the filler adopt ceramic substances and heat-reflecting pigments, the wear resistance and the skid resistance can not reach the actual road index, the coating is only used in places without any wear basically, such as external walls of buildings, tank bodies and the like, and the coating is not applied to the actual asphalt pavement.
Aiming at the practical problems, the development of a heat reflection cooling coating which not only meets the heat reflection effect, but also meets the requirement of the practical asphalt road and is simple in construction is urgently needed.
Disclosure of Invention
In view of the above technical problems, an object of the present invention is to provide a gray heat-reflective cooling coating, a second object is to provide an application of the gray heat-reflective cooling coating, and a third object is to provide a preparation method of the gray heat-reflective cooling coating.
In order to achieve the first purpose, the invention provides a gray heat-reflecting cooling coating which is characterized by comprising the following components in parts by weight:
the metal oxide mixed-phase pigment comprises one or a mixture of iron chromium black, copper chromium black, iron titanium black and ferrochrome copper black;
the heat reflection filler comprises one or a mixture of more of anatase titanium dioxide, rutile titanium dioxide or lithopone.
The invention takes water-based polyurethane polymerization emulsion as a film-forming base material, and is matched with metal oxide miscible pigment, heat reflection filler and inorganic hollow microparticles, so that the prepared coating is a gray coating, has the color close to that of cement, and cannot cause any visual effect on a driver.
The water-based polyurethane polymer emulsion is used as a film-forming base material, and is matched with metal oxide miscible pigment, heat reflection filler and inorganic hollow microparticles, so that the finally prepared coating is applied to asphalt pavements, has the anti-skid property BPN value of more than 45, has good wear resistance and skid resistance, is suitable for being used on the asphalt pavements, and can also be used on the surfaces of buildings.
The coating of the invention can be directly paved on asphalt pavement, and the construction is simple. The temperature of the pavement can be effectively reduced by more than 10 ℃ in high temperature in summer, and the high-temperature heat stability diseases of the pavement can be greatly improved.
In the scheme, the method comprises the following steps: the inorganic hollow micro-particles are filled with carbon dioxide or nitrogen. The heat preservation and insulation effect is improved.
In the scheme, the method comprises the following steps: the dispersing agent is selected from one or more of triethyl hexyl phosphoric acid, sodium dodecyl sulfate, methyl amyl alcohol, polyacrylamide and fatty acid polyglycol ester.
In the scheme, the method comprises the following steps: the flatting agent is selected from one or more of micron-sized precipitated hydrated silica, micron-sized silica aerogel and gas-phase silica.
In the scheme, the method comprises the following steps: the defoaming agent is selected from one or more of emulsified silicone oil, a higher alcohol fatty acid ester compound, polydimethylsiloxane and the like.
In the scheme, the method comprises the following steps: the leveling agent is selected from one or more of polydimethylsiloxane, polymethylphenylsiloxane, polyether polyester modified organic siloxane and alkyl modified organic siloxane.
In the scheme, the method comprises the following steps: the plasticizer is selected from one or more of propylene glycol methyl ether, dipropylene glycol methyl ether, tripropylene glycol methyl ether and dipropylene glycol propyl ether.
In the scheme, the method comprises the following steps: the anti-sagging agent is selected from one or more of N-methyl pyrrolidone solution of modified polyurea and modified hydrogenated castor oil;
the gel is selected from one or more of modified urea polyurethanes, polyacrylic acids and polyoxyethylene.
The second object of the present invention is achieved by: the application of the grey heat-reflecting cooling coating on the asphalt pavement.
The third object of the present invention is achieved by: the preparation method of the grey heat-reflection cooling coating is characterized by comprising the following steps:
a. adding the aqueous polyurethane polymerization emulsion into a shearing machine, setting the rotating speed at 200-300r/min, adjusting the pH value of the system to 7-8 by using ammonia water, and then continuously shearing for 5-10 min;
b. adjusting the shearing speed to 300-400r/min, adding a dispersing agent and a part of defoaming agent, and continuing to shear for 5-10 min;
c. fully and uniformly mixing the metal oxide miscible pigment, the heat reflection filler, the inorganic hollow micro-particles and the flatting agent to obtain a mixture, adjusting the speed of a shearing machine to 600-800r/min, adding the mixture into the emulsion, and continuously shearing for 10-30 min;
d. adding the rest of defoaming agent, leveling agent and plasticizer dropwise into the system, and continuously shearing for 0.5-1 h;
e. finally, dripping the anti-sagging agent and the gel into the system, continuously shearing for 0.5-1h, and discharging.
The invention adds various raw materials step by step, ensures that the materials are uniformly dispersed and not agglomerated, and has simple construction process and easy manufacture.
The asphalt pavement gray heat-reflection cooling coating has the beneficial effects of good performances of sunlight reflection, wear resistance, skid resistance, weather resistance and the like. The coating is coated on the surface layer of the asphalt pavement, so that the temperature of the pavement can be effectively reduced by more than 10 ℃ at high temperature in summer, the high-temperature heat stability diseases of the pavement can be greatly improved, the urban heat island effect is relieved, and in addition, the coating is gray and does not cause any visual influence on a driver. Secondly, the coating can be directly paved on an asphalt pavement, and the construction is simple. The coating disclosed by the invention is simple in preparation process, low in cost and suitable for industrial production.
Detailed Description
The invention is further illustrated by the following examples:
the ingredients selected for examples 1-4 are shown in Table 1 below
TABLE 1 composition of each example
Examples 1-4 were prepared as follows:
a. adding the aqueous polyurethane polymerization emulsion into a shearing machine, setting the rotating speed at 200-300r/min, adjusting the pH value of the system to 7-8 by using ammonia water, and then continuously shearing for 5-10 min.
b. The shearing speed is adjusted to be 300-400r/min, and the shearing is continued for 5-10min after the dispersing agent and the first part of the defoaming agent are added.
c. Fully and uniformly mixing the metal oxide miscible pigment, the heat reflection filler, the inorganic hollow micro-particles and the flatting agent to obtain a mixture, adjusting the speed of a shearing machine to 600-800r/min, adding the mixture into the emulsion, and continuously shearing for 10-30 min.
d. Adding the defoaming agent, the leveling agent and the plasticizer of the second part into the system dropwise, and continuing to shear for 0.5-1 h;
e. finally, dripping the anti-sagging agent and the gel into the system, continuously shearing for 0.5-1h, and discharging.
The grey heat-reflective temperature-reducing coatings prepared in examples 1 to 4 were subjected to tests of relevant standards of coatings according to the requirements of "raw materials for paints, varnishes and paints and varnishes", and the test results are shown in Table 2.
Table 2 example 1 test results
Examples 2-4 the test results were the same as in example 1.
1kg of each of the gray heat-reflective temperature-reducing coatings prepared in examples 1 to 4 was coated on a surface of 1m20.5kg of quartz sand anti-skid particles (the indexes are shown in the table 3) are spread on the asphalt pavement, and after the particles are cured, the particles are detected according to pavement anti-skid coatings, road sign marking coatings and the like, and the detection results are shown in the table 4.
TABLE 3 technical indices of anti-skid particles
| Item | Unit of | Technical requirements | Test method |
| Particle size | mm | 1.18-2.36 | JTG F40-2004 |
| Apparent density | g·cm-3 | 2.25-2.45 | T0328-2005 |
| Hardness of | — | ≥6 | JT/T 712-2008 |
| Water absorption rate | ％ | ＜3.0 | T0330-2005 |
| Los Angeles abrasion | ％ | ＜20 | T0317-2005 |
| Crush number | ％ | ≤18 | T0322-2000 |
Table 4 example 1 test results
Examples 2-4 the test results were the same as in example 1.
The asphalt pavement coated with the gray heat-reflective cooling coating prepared in examples 1 to 4 and the asphalt pavement not coated were subjected to cooling tests, and the test results are shown in table 5.
Table 5 examples 1-4 cool down test
Compared with the test results, in addition to meeting the indexes of the coating and the pavement performance, when the temperature of the asphalt pavement reaches above 70 ℃, the temperature of example 1 is reduced to about 20 ℃, and the temperature of examples 2 to 4 is reduced to about 15 ℃, so that the comprehensive example 1 has more excellent temperature reduction effect, which is mainly due to the fact that the metal oxide mixed-phase pigment used in example 1 is iron chromium black different from examples 2 to 4, and has good reflection effect on infrared rays besides the function of color mixing, so that the temperature reduction effect of example 1 is more remarkable than that of examples 2 to 4.
The present invention is not limited to the above-described embodiments, and those skilled in the art will understand that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. The grey heat-reflection cooling coating is characterized by comprising the following components in parts by weight:
the metal oxide mixed-phase pigment comprises one or a mixture of iron chromium black, copper chromium black, iron titanium black and ferrochrome copper black;
the heat reflection filler comprises one or a mixture of more of anatase titanium dioxide, rutile titanium dioxide or lithopone.
2. The gray heat-reflective cooling coating of claim 1, wherein: the inorganic hollow micro-particles are filled with carbon dioxide or nitrogen.
3. The grey heat-reflective cooling coating according to claim 1 or 2, characterized in that: the dispersing agent is selected from one or more of triethyl hexyl phosphoric acid, sodium dodecyl sulfate, methyl amyl alcohol, polyacrylamide and fatty acid polyglycol ester.
4. The gray heat-reflective cooling coating of claim 3, wherein: the flatting agent is selected from one or more of micron-sized precipitated hydrated silica, micron-sized silica aerogel and gas-phase silica.
5. The gray heat-reflective cooling coating of claim 4, wherein: the defoaming agent is selected from one or more of emulsified silicone oil, a higher alcohol fatty acid ester compound, polydimethylsiloxane and the like.
6. The gray heat-reflective cooling coating of claim 5, wherein: the leveling agent is selected from one or more of polydimethylsiloxane, polymethylphenylsiloxane, polyether polyester modified organic siloxane and alkyl modified organic siloxane.
7. The gray heat-reflective cooling coating of claim 6, wherein: the plasticizer is selected from one or more of propylene glycol methyl ether, dipropylene glycol methyl ether, tripropylene glycol methyl ether and dipropylene glycol propyl ether.
8. The gray heat-reflective cooling coating of claim 7, wherein: the anti-sagging agent is selected from one or more of N-methyl pyrrolidone solution of modified polyurea and modified hydrogenated castor oil;
the gel is selected from one or more of modified urea polyurethanes, polyacrylic acids and polyoxyethylene.
9. Use of the grey heat reflective cooling coating of any one of claims 1 to 8 on asphalt pavements.
10. A method for preparing the gray heat-reflecting cooling coating as claimed in any one of claims 1 to 8, which is characterized by comprising the following steps:
a. adding the aqueous polyurethane polymerization emulsion into a shearing machine, setting the rotating speed at 200-300r/min, adjusting the pH value of the system to 7-8 by using ammonia water, and then continuously shearing for 5-10 min;
b. adjusting the shearing speed to 300-400r/min, adding a dispersing agent and a part of defoaming agent, and continuing to shear for 5-10 min;
c. fully and uniformly mixing the metal oxide miscible pigment, the heat reflection filler, the inorganic hollow micro-particles and the flatting agent to obtain a mixture, adjusting the speed of a shearing machine to 600-800r/min, adding the mixture into the emulsion, and continuously shearing for 10-30 min;
d. adding the rest of defoaming agent, leveling agent and plasticizer dropwise into the system, and continuously shearing for 0.5-1 h;
e. finally, dripping the anti-sagging agent and the gel into the system, continuously shearing for 0.5-1h, and discharging.
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| CN112280442A (en) * | 2020-10-26 | 2021-01-29 | 浙江伟星实业发展股份有限公司 | Wear-resistant acrylic matte paint with particle tiling property and preparation method and application thereof |
| CN112280454A (en) * | 2020-11-02 | 2021-01-29 | 重庆致径路面材料有限公司 | Polyurethane heat reflection coating and preparation method and application thereof |
| CN114874669A (en) * | 2021-12-31 | 2022-08-09 | 东方雨虹民用建材有限责任公司 | Energy-saving heat-preserving polymer modified asphalt waterproof coating and preparation method thereof |
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| CN112280442A (en) * | 2020-10-26 | 2021-01-29 | 浙江伟星实业发展股份有限公司 | Wear-resistant acrylic matte paint with particle tiling property and preparation method and application thereof |
| CN112280442B (en) * | 2020-10-26 | 2022-02-11 | 浙江伟星实业发展股份有限公司 | Wear-resistant acrylic matte paint with particle tiling property and preparation method and application thereof |
| CN112280454A (en) * | 2020-11-02 | 2021-01-29 | 重庆致径路面材料有限公司 | Polyurethane heat reflection coating and preparation method and application thereof |
| CN114874669A (en) * | 2021-12-31 | 2022-08-09 | 东方雨虹民用建材有限责任公司 | Energy-saving heat-preserving polymer modified asphalt waterproof coating and preparation method thereof |
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