CN113136724A - Radiation refrigeration fabric - Google Patents
Radiation refrigeration fabric Download PDFInfo
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- CN113136724A CN113136724A CN202010207521.XA CN202010207521A CN113136724A CN 113136724 A CN113136724 A CN 113136724A CN 202010207521 A CN202010207521 A CN 202010207521A CN 113136724 A CN113136724 A CN 113136724A
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/45—Oxides or hydroxides of elements of Groups 3 or 13 of the Periodic System; Aluminates
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/44—Oxides or hydroxides of elements of Groups 2 or 12 of the Periodic System; Zincates; Cadmates
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/46—Oxides or hydroxides of elements of Groups 4 or 14 of the Periodic System; Titanates; Zirconates; Stannates; Plumbates
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/53—Polyethers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B23/00—Machines, plants or systems, with a single mode of operation not covered by groups F25B1/00 - F25B21/00, e.g. using selective radiation effect
- F25B23/003—Machines, plants or systems, with a single mode of operation not covered by groups F25B1/00 - F25B21/00, e.g. using selective radiation effect using selective radiation effect
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/10—Animal fibres
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/25—Resistance to light or sun, i.e. protection of the textile itself as well as UV shielding materials or treatment compositions therefor; Anti-yellowing treatments
Abstract
The invention discloses a radiation refrigeration fabric, which contains silk fibers, and comprises a material which is attached to the fibers and has a refractive index higher than 1.6 and lower than 3.0. In the radiation refrigeration fabric, the material with high refractive index attached to the fibers is overlapped with the fibers to improve the ultraviolet reflectivity, compared with an untreated fabric, the radiation refrigeration fabric has the ultraviolet reflectivity improved by 42 percent, so that the reflectivity in the whole sunlight wave band reaches 95 percent, the temperature of the treated fabric in the sunlight can be reduced by about 3.6 ℃ compared with the room temperature, and meanwhile, the radiation refrigeration fabric covered on the skin can be reduced by about 12 ℃ compared with a cotton fabric.
Description
Technical Field
The invention belongs to a radiation refrigeration material, and particularly relates to a radiation refrigeration fabric.
Technical Field
With the change of the earth climate, the reduction of carbon emission and the construction of an energy-saving society become common knowledge. Wherein the energy consumption for refrigeration of air conditioners and the like accounts for about 15% of the world electricity consumption every year, so that the research and development of passive refrigeration means are particularly important for energy conservation and emission reduction. Over a long history of civilization in humans, various fabrics and textiles are used to bring comfort and fascination to the human body and to protect the human body from temperature changes. However, when a human being is in an outdoor high-temperature environment, since there is no energy input (such as air conditioning) and conventional clothes cannot provide a cooling and cool feeling to the human body, it is still a challenge to cool the human body by passive cooling technology under outdoor conditions. Radiation refrigeration is a refrigeration technology for achieving cooling by radiating heat to cold outer space spontaneously, the atmosphere has different transmittances for electromagnetic waves with different wavelengths, wherein the transmittance at a wave band of 8-13 microns is extremely high, namely an 'atmospheric window', so that the material has the highest possible emissivity at 8-13 microns and the highest possible reflectivity at a wave band other than 8-13 microns, particularly at a solar spectrum wave band of 0.3-2.5 microns, by regulating and controlling the spectral properties of the material, the material can have an excellent radiation refrigeration effect, zero power consumption is realized, refrigerant is not needed, zero-emission passive refrigeration is realized, and the refrigeration power can reach 150W/m theoretically2. Therefore, a green refrigeration mode of passive radiation refrigeration is developed, energy can be greatly saved, and the problems of environmental pollution, greenhouse effect and the like caused by the traditional refrigeration means can be relieved.
The traditional refrigeration mode such as air conditioning cooling needs huge energy consumption, and the greenhouse effect is accelerated. In addition, the radiation refrigeration materials reported in recent years, although exhibiting good refrigeration power, cannot be applied to the human body due to the material component structure; the infrared transmission refrigeration material based on nano polyethylene is processed and formed, although the infrared transmission refrigeration material has the same wearable property as cotton, the infrared transmission refrigeration material still does not reach the level lower than the room temperature under the outdoor sunlight condition, and therefore the refrigeration efficiency is limited.
Disclosure of Invention
In order to increase the level of radiation refrigeration of wearable fabrics in outdoor conditions, the object of the present invention is to propose a radiation refrigeration fabric comprising a material attached to the fibers and having a refractive index higher than 1.6 and lower than 3.0. Because the refractive index difference exists between the material with high refractive index and the fabric, the material can be scattered when light passes through the interface of the contact of the material with the fabric, so that the integral reflectivity is improved, the treated fabric has extremely high reflectivity in a solar energy waveband of 0.3-2.5 microns, particularly in an ultraviolet waveband, and the structure greatly reduces the ultraviolet absorption of the fiber fabric; meanwhile, the structure can not influence the emissivity of the fabric in the infrared band, thereby realizing the radiation refrigeration performance lower than the room temperature for the first time and greatly improving the cooling effect on the human body.
To achieve the above objects, the present invention provides a radiation-cooled fabric comprising silk fibers, wherein the radiation-cooled fabric comprises a material having a refractive index higher than 1.6 and lower than 3.0 and attached to the fibers.
Preferably, the material having a refractive index higher than 1.6 and lower than 3.0 includes alumina nanoparticles, zinc oxide nanoparticles, hafnium oxide nanoparticles, zirconium oxide nanoparticles, and the like.
Preferably, the preparation method of the radiation refrigeration fabric comprises a nano treatment process, coating and dipping.
Preferably, the preparation method of the radiation refrigeration fabric nano-treatment process is as follows:
(1) firstly, dissolving the material with the refractive index higher than 1.6 and lower than 3.0 in deionized water to obtain a solution with the mass concentration of 6-30 g/L;
(2) adding tetrabutyl titanate with the mass concentration of 8-16g/L into the solution obtained in the step (1), and performing ultrasonic dispersion to obtain nano alumina hydrosol;
(3) soaking the fabric in 0.2-20% fatty alcohol-polyoxyethylene ether solution for 10-30 min.
(4) Taking out the untreated fabric from the fatty alcohol-polyoxyethylene ether solution, and drying at 60-80 ℃ for 30-60 min.
(5) And (3) immersing the dried fabric into the nano alumina hydrosol obtained in the step (2), and heating the fabric in a water bath at the temperature of 35-70 ℃ for 40-70 min.
(6) And (5) taking out the fabric subjected to water bath in the step (5) and drying in the sun.
Preferably, the mass concentration of the solution in the step (1) is 18 g/L.
Preferably, the mass concentration of tetrabutyl titanate in the step (2) is 12 g/L.
Preferably, the concentration of the fatty alcohol-polyoxyethylene ether solution in the step (3) is 1%, and the soaking time in the step (3) is 15 min.
Preferably, the drying in the step (4) is carried out in a constant temperature oven at 60 ℃ for 30 min.
Preferably, the fabric dried in the step (5) is immersed in the nano alumina hydrosol in the step (2), and is heated in a water bath for 50min at the temperature of 40 ℃.
Has the advantages that:
in the radiation refrigeration fabric, the material with high refractive index attached to the fibers is overlapped with the fibers to improve the ultraviolet reflectivity, compared with an untreated fabric, the radiation refrigeration fabric has the ultraviolet reflectivity improved by 42 percent, so that the reflectivity in the whole sunlight wave band reaches 95 percent, the temperature of the treated fabric in the sunlight can be reduced by about 3.6 ℃ compared with the room temperature, and meanwhile, the radiation refrigeration fabric covered on the skin can be reduced by about 12 ℃ compared with a cotton fabric.
Drawings
FIG. 1 is a solar band reflectance test spectrum of silk.
FIG. 2 is an infrared emission test spectrum of silk.
Fig. 3 is a SEM picture of the microstructure of the radiation-cooled fabric of the present invention.
Fig. 4 is a solar waveband reflection test spectrum of the radiation refrigeration fabric.
Fig. 5 is a comparison of the radiation refrigeration performance test of the radiation refrigeration fabric of the present invention and an untreated fabric.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.
Examples
The radiation refrigeration fabric is obtained through a nano treatment process, and the specific preparation method is as follows:
(1) firstly, dissolving alumina nano particles in deionized water to obtain 100g of solution with the mass concentration of 18 g/L;
(2) then adding 20g of tetrabutyl titanate with the mass concentration of 12g/L into the solution obtained in the step (1), and performing ultrasonic dispersion to obtain nano alumina hydrosol;
(3) then the area is 10X 10cm2Soaking natural silk fabric in 1% fatty alcohol-polyoxyethylene ether solution at 30 deg.C for 15 min;
(4) then taking out the fabric and drying the fabric in a constant temperature oven at 60 ℃ for 30 min;
(5) immersing the dried fabric into the nano alumina hydrosol obtained in the step (2), and carrying out water bath treatment in a water bath heater at 40 ℃ for 50 min;
(6) finally, taking out the fabric subjected to water bath in the step (5) and drying in the sun;
the test method comprises the following steps:
A. the reflectivity of the natural silk fabric in the solar band was measured using a UV-vis-nir spectrophotometer (UV3600, shimadzu) equipped with an integrating sphere model (ISR-3100), and the results are shown in fig. 1.
B. Emissivity of the infrared part of natural silk fabric was measured using fourier transform infrared (FT-IR) spectrometer (Nicolet IS50, thermo fisher) and gold integrating sphere (intersgatir MIR, Pike) and mercury cadmium telluride detector, and fig. 2 shows the results.
C. The microstructure test of the radiation refrigeration fabric obtained by the nano-treatment process of the embodiment is carried out, fig. 3 is an SEM image of the test, an instrument used is Zeiss Sigma VP, and fig. 3 is a test result.
D. The reflectivity of the solar band of the radiation refrigeration fabric obtained by the nano treatment process of the embodiment is tested, the used instrument is a UV-vis-nir spectrophotometer (UV3600, Shimadzu) equipped with an integrating sphere model (ISR-3100), and FIG. 4 shows the test result.
E. The temperature of the radiation refrigeration fabric obtained by the nano treatment process in the embodiment is tested, a temperature tester is placed below the fabric, then the air temperature and the temperature below the fabric before and after treatment are recorded, the lower the temperature is, the better the refrigeration effect is, and the used instrument is a thermocouple of K-type and Omega.
And (4) testing and analyzing results:
the natural silk has higher sunlight reflection rate and infrared emissivity due to the inherent multilevel structure and protein composition, and has some basic properties as radiation refrigeration clothes. We have carried out spectral tests on it, the lower curve in fig. 1 representing the radiant spectrum of the sun, the upper reflection being 85% on average, that is to say representing a reflectance of 85%, mainly due to the absorption of light in the ultraviolet part; the lower curve in fig. 2 represents atmospheric transmission, and the upper ir absorption curve indicates that the ir absorption reaches 93%, which is currently the result of solar reflectance that does not meet the sub-ambient radiation cooling requirements.
The SEM image of fig. 3 shows the microstructure of the radiation-cooled fabric obtained after the nano-process treatment of the example, and the alumina particles are visible on the fiber surface. Fig. 4 shows the spectral properties of the fabric after nanocrystallization in the visible to infrared band, showing that the visible region reflection of the fabric after nanotechnology treatment is over 95%. Because of the high refractive index of the aluminum oxide, the aluminum oxide and the fibers are overlapped together to improve the ultraviolet reflectivity, compared with untreated fabrics, the ultraviolet reflectivity is improved by 42 percent, so that the reflectivity of the whole sunlight wave band reaches 95 percent, and the excellent spectral performance ensures that the radiation refrigeration performance of the aluminum oxide can be realized in the sunlight.
A temperature tester was placed under the fabric and the air temperature was recorded as well as the temperature under the fabric before and after treatment, with lower temperatures representing better cooling. Fig. 5 shows that the temperature of the fabric treated by the nano process can be lower than the room temperature by about 3.6 ℃ in the sun, while the untreated fabric is kept at a temperature higher than the room temperature all the time in the day, which shows that the fabric treated by the nano process can indeed realize the radiation refrigeration effect lower than the room temperature in the sun.
Claims (9)
1. A radiation-cooled fabric comprising silk fibers, wherein the radiation-cooled fabric comprises a material having a refractive index greater than 1.6 and less than 3.0 attached to the fibers.
2. The radiation refrigeration fabric of claim 1, wherein the material having a refractive index above 1.6 and below 3.0 comprises aluminum oxide nanoparticles, zinc oxide nanoparticles, hafnium oxide nanoparticles, zirconium oxide nanoparticles.
3. The radiation refrigeration fabric of claim 2, wherein the preparation method of the radiation refrigeration fabric comprises nano-treatment process, coating and dipping.
4. The radiation refrigeration fabric according to claim 3, wherein the preparation method of the radiation refrigeration fabric nano-treatment process is as follows:
(1) firstly, dissolving the material with the refractive index higher than 1.6 and lower than 3.0 in deionized water to obtain a solution with the mass concentration of 6-30 g/L;
(2) adding tetrabutyl titanate with the mass concentration of 8-16g/L into the solution obtained in the step (1), and performing ultrasonic dispersion to obtain nano alumina hydrosol;
(3) immersing the untreated fabric into a 0.2-20% fatty alcohol-polyoxyethylene ether solution for 10-30 min;
(4) taking the fabric in the step (3) out of the fatty alcohol-polyoxyethylene ether solution, and drying at the temperature of 60-80 ℃ for 30-60 min;
(5) immersing the dried fabric into the nano alumina hydrosol obtained in the step (2), and heating the fabric in a water bath at the temperature of 35-70 ℃ for 40-70 min;
(6) and (5) taking out the fabric subjected to water bath in the step (5) and drying in the sun.
5. The radiation-cooled fabric according to claim 4, wherein the mass concentration of the solution in step (1) is 18 g/L.
6. The radiation-cooled fabric according to claim 4, wherein the mass concentration of tetrabutyl titanate in the step (2) is 12 g/L.
7. The radiation-cooled fabric according to claim 4, wherein the concentration of the fatty alcohol-polyoxyethylene ether solution in step (3) is 1%, and the soaking time in step (3) is 15 min.
8. A radiation-cooled fabric according to claim 4, wherein the fabric is dried in a 60 ℃ oven for 30min in step (4).
9. The radiation refrigeration fabric according to claim 4, wherein the dried fabric of step (5) is immersed in the nano alumina hydrosol of step (2) and heated in water bath at 40 ℃ for 50 min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2020100622147 | 2020-01-20 | ||
| CN202010062214 | 2020-01-20 |
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| Publication Number | Publication Date |
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| CN113136724A true CN113136724A (en) | 2021-07-20 |
| CN113136724B CN113136724B (en) | 2023-06-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113802365A (en) * | 2021-09-10 | 2021-12-17 | 哈尔滨工业大学 | Oil stain resistant wearable refrigeration base material for personal heat management and preparation method thereof |
| CN114622325A (en) * | 2021-09-30 | 2022-06-14 | 北京金轮沃德科技有限公司 | Double-sided constant-temperature fabric and preparation method thereof |
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| CN108870798A (en) * | 2017-05-12 | 2018-11-23 | 浙江大学 | Radiation refrigeration particle and devaporation recyclable device |
| WO2019112629A1 (en) * | 2017-08-15 | 2019-06-13 | The Trustees Of Columbia University In The City Of New York | Devices and methods for radiative cooling |
| CN110317521A (en) * | 2019-07-05 | 2019-10-11 | 宁波瑞凌新能源科技有限公司 | Selective radiation refrigeration coating and its composite material and methods for using them |
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2020
- 2020-03-23 CN CN202010207521.XA patent/CN113136724B/en active Active
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| CN108870798A (en) * | 2017-05-12 | 2018-11-23 | 浙江大学 | Radiation refrigeration particle and devaporation recyclable device |
| WO2019112629A1 (en) * | 2017-08-15 | 2019-06-13 | The Trustees Of Columbia University In The City Of New York | Devices and methods for radiative cooling |
| CN110317521A (en) * | 2019-07-05 | 2019-10-11 | 宁波瑞凌新能源科技有限公司 | Selective radiation refrigeration coating and its composite material and methods for using them |
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| 董永春: "《纺织助剂化学》", 31 January 2010, 东华大学出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113802365A (en) * | 2021-09-10 | 2021-12-17 | 哈尔滨工业大学 | Oil stain resistant wearable refrigeration base material for personal heat management and preparation method thereof |
| CN114622325A (en) * | 2021-09-30 | 2022-06-14 | 北京金轮沃德科技有限公司 | Double-sided constant-temperature fabric and preparation method thereof |
| WO2023050751A1 (en) | 2021-09-30 | 2023-04-06 | 杨艳 | Double-sided constant temperature fabric and preparation method therefor |
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