CN118007413A - All-weather multi-scene refrigeration cellulose fabric and preparation method thereof - Google Patents
All-weather multi-scene refrigeration cellulose fabric and preparation method thereof Download PDFInfo
- Publication number
- CN118007413A CN118007413A CN202311652929.8A CN202311652929A CN118007413A CN 118007413 A CN118007413 A CN 118007413A CN 202311652929 A CN202311652929 A CN 202311652929A CN 118007413 A CN118007413 A CN 118007413A
- Authority
- CN
- China
- Prior art keywords
- cellulose
- fabric
- weather
- scene
- cellulose fabric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229920002678 cellulose Polymers 0.000 title claims abstract description 100
- 239000001913 cellulose Substances 0.000 title claims abstract description 100
- 239000004744 fabric Substances 0.000 title claims abstract description 85
- 238000005057 refrigeration Methods 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 238000005507 spraying Methods 0.000 claims abstract description 22
- 229920002301 cellulose acetate Polymers 0.000 claims abstract description 17
- 238000011065 in-situ storage Methods 0.000 claims abstract description 13
- 239000012670 alkaline solution Substances 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 6
- 239000000243 solution Substances 0.000 claims description 23
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 17
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 14
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 10
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 9
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 8
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 8
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 claims description 6
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 239000003507 refrigerant Substances 0.000 claims description 2
- 238000001816 cooling Methods 0.000 abstract description 39
- 230000000694 effects Effects 0.000 abstract description 34
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 26
- 239000000377 silicon dioxide Substances 0.000 abstract description 13
- 239000000463 material Substances 0.000 abstract description 8
- 239000004753 textile Substances 0.000 abstract description 6
- 235000012239 silicon dioxide Nutrition 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 2
- 231100000956 nontoxicity Toxicity 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 238000009423 ventilation Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 20
- 238000005406 washing Methods 0.000 description 17
- 238000001704 evaporation Methods 0.000 description 11
- 230000008020 evaporation Effects 0.000 description 11
- 230000002209 hydrophobic effect Effects 0.000 description 11
- 230000001603 reducing effect Effects 0.000 description 7
- 230000005855 radiation Effects 0.000 description 6
- 239000002105 nanoparticle Substances 0.000 description 5
- 230000009467 reduction Effects 0.000 description 4
- 238000002310 reflectometry Methods 0.000 description 4
- 210000004243 sweat Anatomy 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000005661 hydrophobic surface Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 229920003043 Cellulose fiber Polymers 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000002086 nanomaterial Substances 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical group CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 1
- 206010019345 Heat stroke Diseases 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000005660 hydrophilic surface Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Landscapes
- Chemical Or Physical Treatment Of Fibers (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention discloses a preparation method of all-weather and multi-scene refrigeration cellulose, and relates to the technical fields of optics, textile and material science and engineering. The preparation method of the invention comprises the following steps: realizing the in-situ growth of silicon dioxide on the surface of the cellulose fabric; and spraying cellulose acetate on one surface of the treated cellulose fabric and spraying an alkaline solution on the other surface of the treated cellulose fabric to obtain the all-weather multi-scene refrigeration cellulose. The cellulose fabric provided by the invention has all-weather and multi-scene cooling and refrigerating effects. The method has the advantages of simple process, easy operation, abundant raw material sources, low cost, no toxicity and high safety; the prepared all-weather and multi-scene cellulose fabric has both cooling performance and perspiration performance, high stability, ventilation and skin friendliness.
Description
Technical Field
The invention discloses an all-weather and multi-scene refrigeration cellulose fabric and a preparation method thereof, and relates to the technical fields of optics, textile and material science and engineering.
Background
As a protective barrier between the human body and the external environment, along with the rapid development of technology and continuous progress of living standard, the demand of people is also improved from simple shielding to fabric with more functions, such as rapid perspiration. When the human body is in a high-temperature environment for a long time, heatstroke is very easy to occur, and personal health is influenced.
Passive radiation refrigeration technology is a refrigeration technology that does not consume any energy, and is primarily dependent on the excellent light management capabilities of the material, including high solar reflectance and mid-infrared light emissivity. By efficiently reflecting sunlight, the material can reduce the absorption of the sunlight, and further avoid the overheating of the object by the sunlight. Meanwhile, based on excellent mid-infrared light emission performance, the material can directly emit heat to the super-cold outer space through an atmospheric transparent window (8-13 mu m), and finally, the spontaneous reduction of the temperature of the material is realized without external energy consumption.
Cellulose is one of the most abundant biological resources in nature, and its material itself has a high emissivity in the "atmospheric window". The micro-nano structure of the cellulose fiber can be regulated and controlled by further introducing the nano material, the reflectivity of the cellulose fiber in a visible light-near infrared (Vis-NIR) wave band is improved, the absorption of solar energy is further inhibited, and the wide-wave band light management capability of the cellulose is realized. The cost of the nano SiO 2 is relatively low, and the nano SiO 2 is easy to prepare in a large scale. According to the Mie scattering theory, siO 2 nano-particles with the size distribution of 200-1600 nm can efficiently generate scattering peaks required for covering the whole visible light-near infrared (Vis-NIR) wave band by utilizing the collective effect of a plurality of Mie resonances. The si—o bond in the SiO 2 molecule exhibits a significant absorption peak at 9.5 μm, i.e. emits mid-infrared light. Therefore, siO 2 has higher emissivity in the mid-infrared band, and can radiate heat to the space through the atmospheric window in an infrared heat radiation manner.
Fabrics with rapid moisture transfer can maintain dryness of the skin surface while rapidly discharging sweat, thereby lowering the temperature to improve the comfort of the human body under high temperature conditions. The basic principle is to use a two-sided asymmetric gradient structure (one side is hydrophobic and the other side is hydrophilic) to realize directional transmission of liquid from hydrophobic to hydrophilic. When the liquid-repellent garment is worn, the hydrophobic surface faces the skin of a human body, so that liquid can be quickly transferred from the skin of the human body to the external surrounding environment, the temperature is reduced while the skin is kept dry, and the wearing comfort is improved.
The existing fabric with the rapid perspiration function can realize the rapid perspiration function through a multi-layer structure, such as a unidirectional moisture-conducting fabric of patent CN208403362U, which reports that the unidirectional moisture-conducting fabric is coated with a layer of water-absorbing material on the surface of cotton cloth, but the binding force of the two materials is poor, so that the stability of the unidirectional moisture-conducting performance of the fabric is poor. Patent CN112252019B processes the surface of the single side of the fabric by means of laser direct writing to manufacture the different hydrophobicity of the two sides of the fabric, but the direct interaction force difference of the multilayer structure can cause the weak combination, the service life is short, and the processing of the surface of the single side of the fabric by means of laser direct writing also has the problem of relatively high cost.
At present, the multifunctional fabric product is more and more emphasized, and the multifunctional fabric product has two or more functions. Fabrics integrating radiation refrigeration and rapid and stable perspiration functions are not reported.
Disclosure of Invention
Aiming at the condition that the existing fabric integrating radiation refrigeration and rapid perspiration functions is less, the invention provides an all-weather and multi-scene refrigeration cellulose fabric with higher stability and a preparation method thereof.
In order to achieve the purpose, the invention adopts the following specific technical scheme:
the preparation method of the all-weather and multi-scene refrigeration cellulose fabric comprises the following steps:
(1) Carrying out chemical treatment on the cellulose fabric to enable SiO 2 to grow on the surface of the cellulose in situ;
(2) Uniformly spraying an alkaline solution on one side of the cellulose fabric after the reaction;
(3) And uniformly spraying cellulose acetate on the other surface of the cellulose fabric to prepare all-weather and multi-scene refrigeration cellulose.
Further:
the chemical treatment in the step (1) is to put the cellulose fabric into water-ethanol solution of tetraethoxysilane and add ammonia water for reaction.
The particle size of SiO 2 in the step (1) is 200 nm-2000 nm.
The alkaline solution in the step (2) is KOH, naOH or LiOH, and the concentration of the alkaline solution is 5-20wt%.
The spraying amount of the cellulose acetate in the step (3) is 0.05-1g/cm 2.
The invention also provides all-weather and multi-scene refrigeration cellulose prepared by the preparation method.
The technical principle of the invention is as follows:
The in situ growth of silica can achieve a strong bond with the cellulosic fabric, thereby imparting long-term working stability and durability to the cellulosic fabric. According to the Mie scattering theory, the silicon dioxide nano particles can efficiently generate scattering peaks required by covering the whole visible light-near infrared (Vis-NIR) wave band, so that the silicon dioxide nano particles have good reflectivity in the visible light wave band, and the silicon dioxide nano particles and cellulose have excellent emissivity in the middle infrared wave band, so that the cooling effect of the fabric under the outdoor sunny condition of radiation refrigeration is provided. The single-side treatment of the alkaline solution can construct a cellulose fabric with hydrophilic single side; the single-side spraying treatment of the cellulose acetate can construct a single-side hydrophobic cellulose fabric, so that the prepared cellulose fabric has both a hydrophilic side and a hydrophobic side, the rapid evaporation of sweat of a human body can be realized, and the effective reduction of the temperature of the human body can be realized through the evaporation of sweat.
Compared with the prior art, the invention has the following technical effects:
(1) According to the invention, the silica is loaded on the surface of the cellulose fabric by an in-situ growth means, so that the acting force and the combination effect between the silica and the cellulose fabric can be improved, the long-term stability of the performance of the self-cooling cellulose fabric is endowed, the obtained textile has good refrigerating performance, and the textile has high emissivity in an atmospheric window wave band and high reflectivity in a solar spectrum region.
(2) The invention utilizes cellulose acetate to endow the cellulose fabric with hydrophobic property; the hydrophilic performance of the cellulose fabric is improved by alkali liquor treatment, and the cellulose fabric with both a hydrophobic side and a hydrophilic side is constructed, so that the effect of high-efficiency directional liquid conveying is achieved. The stability is high, the sweat-discharging performance is good, the all-weather and multi-scene cooling functions of the cellulose fabric can be realized, and the good refrigerating effect can be maintained after repeated use and washing.
(3) According to the method for preparing the all-weather refrigeration cellulose fabric by utilizing the means that the ethyl orthosilicate is hydrolyzed, the silicon dioxide nano particles are grown on the surface of the cellulose fabric in situ, and meanwhile, the cellulose acetate is sprayed on one surface of the cellulose fabric and the alkaline solution is sprayed on the other surface of the cellulose fabric, the prepared cellulose fabric can realize the cooling function (outdoor sunny scene) through radiation refrigeration, and also can realize the cooling function (outdoor cloudy and indoor scenes) through sweat directional rapid transmission, so that the all-weather and multi-scene spontaneous cooling function of the cellulose fabric is realized.
Drawings
Fig. 1 is an SEM image of the hydrophilic surface of the all-weather refrigerated cellulose fabric of example 6.
Figure 2 is an SEM image of the hydrophobic side of the all-weather refrigerated cellulose fabric of example 6.
Fig. 3 shows the reflectance in the solar spectral band and the emissivity in the mid-infrared band of the all-weather refrigerating cellulose fabric of example 6.
FIG. 4 is the contact angle (-151) of the hydrophobic side of the all-weather refrigerated cellulose fabric of example 6.
Detailed Description
In order to make the contents of the present invention more easily understood, the technical scheme of the present invention will be further described with reference to the specific embodiments, but the present invention is not limited thereto.
The specific components of the cellulose fabrics in the following examples and comparative examples were 100% cotton fibers.
Example 1
(1) The cellulose fabric was placed in an ethanol-water (1:1, the same applies below) solution, ethyl orthosilicate (10 wt%) and ammonia (1 wt%) were added, and the temperature was 30℃for 12 hours, with an in situ growth SiO 2,SiO2 average particle size of 200nm.
(2) And (3) spraying a NaOH solution with the concentration of 5% on one side of the treated cellulose fabric, and standing until the solution is air-dried.
(3) And (3) spraying 0.05g/cm 2 of cellulose acetate on the other side of the cellulose fabric to prepare the all-weather multi-scene refrigeration cellulose fabric.
(4) In the outdoor environment, the temperature of the cellulose fabric is averagely reduced by 18 ℃ in the daytime by using a temperature measuring device, and the temperature reduction effect is measured again to be 17.9 ℃ after 10 times of washing; the average cooling temperature at night is 6.5 ℃, and after 10 times of washing, the cooling effect is 6.4 ℃ after the second measurement.
(5) In an indoor environment, a drop of water (about 200 μl) was dropped on the skin surface and the all-weather refrigerated cellulose fabric was covered thereon, the total evaporation time of the water was measured to be 5.5min, the average cooling effect was 4.0 ℃, and after 10 washes, the cooling effect was measured again to be 4.0 ℃.
Note that: after the water is volatilized, the temperature of a plurality of points is measured on the surface of the fabric through a temperature sensor, and the obtained average temperature is the average cooling effect.
Example 2
(1) The cellulose fabric was placed in an ethanol-water solution, ethyl orthosilicate (10 wt%) and ammonia water (5 wt%) were added, and SiO 2 was grown in situ at 30℃for 12 hours, with an average particle size of 500nm.
(2) And (3) spraying a 10% NaOH solution on one side of the treated cellulose, and standing until the solution is air-dried.
(3) And (3) spraying 0.3g/cm 2 of cellulose acetate on the other side of the cellulose to prepare the all-weather multi-scene refrigeration cellulose.
(4) In an outdoor environment, the temperature of a (K-type thermocouple) cellulose white balance is reduced by 19 ℃ by using a temperature measuring device, and after 10 times of washing, the temperature reducing effect is measured again to be 18 ℃; average cooling at night is 6.2 ℃, after 10 times of washing, the cooling effect is 6.0 ℃ measured again
(5) In an indoor environment, a drop of water (about 200 μl) was dropped on the skin surface and an all-weather refrigerating cellulose fabric was covered thereon, the total evaporation time of the water was measured to be 3.6min, the average cooling effect was 4.5 ℃, and after 10 washes, the cooling effect was measured again to be 4.5 ℃.
Example 3
(1) The cellulose fabric was placed in an ethanol-water solution, ethyl orthosilicate (10 wt%) and ammonia water (7.5 wt%) were added, and SiO 2 was grown in situ at 30℃for 12 hours, with an average particle size of 1000nm.
(2) And (3) spraying a NaOH solution with the concentration of 15% on one side of the treated cellulose, and standing until the solution is air-dried.
(3) And (3) spraying 0.1g/cm 2 of cellulose acetate on the other side of the cellulose to prepare the all-weather multi-scene refrigeration cellulose.
(4) In an outdoor environment, the temperature of the cellulose white balance (K-type thermocouple) is measured by a temperature measuring device and is reduced by 17.4 ℃, and after 10 times of washing, the temperature reducing effect is measured again to be 17.1 ℃; average cooling at night is 6.9 ℃, after 10 times of washing, the cooling effect is 6.7 ℃ measured again
(5) In an indoor environment, a drop of water (about 200 μl) was dropped on the skin surface and an all-weather refrigerating cellulose fabric was covered thereon, and the total evaporation time of the water was measured to be 4.2min, the average cooling effect was 5.1 ℃, and after 10 washes, the cooling effect was measured again to be 5.1 ℃.
Example 4
(1) The cellulose fabric was placed in an ethanol-water solution, ethyl orthosilicate (10 wt%) and ammonia water (7.5 wt%) were added, and SiO 2 was grown in situ at 30℃for 12 hours, with an average particle size of 1000nm.
(2) And (3) spraying a NaOH solution with the concentration of 20% on one side of the treated cellulose, and standing until the solution is air-dried.
(3) And (3) spraying 0.5g/cm 2 of cellulose acetate on the other side of the cellulose to prepare the all-weather multi-scene refrigeration cellulose.
(4) In an outdoor environment, the temperature of a (K-type thermocouple) cellulose white balance is reduced by 15.4 ℃ by using a temperature measuring device, and after 10 times of washing, the temperature reducing effect is measured again to be 15.0 ℃; average cooling at night is 5.9 ℃, after 10 times of washing, the cooling effect is 5.7 ℃ measured again
(5) In an indoor environment, a drop of water (about 200 μl) was dropped on the skin surface and an all-weather refrigerating cellulose fabric was covered thereon, and the total evaporation time of the water was measured to be 5.8min, the average cooling effect was 4.2 ℃, and after 10 washes, the cooling effect was measured again to be 4.1 ℃.
Example 5
(1) The cellulose fabric was placed in an ethanol-water solution, ethyl orthosilicate (10 wt%) and ammonia water (15 wt%) were added, and SiO 2 was grown in situ at 30℃for 12 hours, with an average particle size of 2000nm.
(2) And (3) spraying a KOH solution with the concentration of 20% on one side of the treated cellulose, and standing until the solution is air-dried.
(3) And (3) spraying 0.5g/cm 2 of cellulose acetate on the other side of the cellulose to prepare the all-weather multi-scene refrigeration cellulose.
(4) In an outdoor environment, the temperature of a (K-type thermocouple) cellulose white balance is reduced by 16.4 ℃ by using a temperature measuring device, and after 10 times of washing, the temperature reducing effect is measured again to be 16.0 ℃; average cooling at night is 6.5 ℃, after 10 times of washing, the cooling effect is 6.2 DEG C
(5) In an indoor environment, a drop of water (about 200 μl) was dropped on the skin surface and the all-weather refrigerated cellulose fabric was covered thereon, and the total evaporation time of the water was measured to be 4.8min, the average cooling effect was 4.2 ℃, and after 10 washes, the cooling effect was measured again to be 3.9 ℃.
Example 6
(1) The cellulose fabric was placed in an ethanol-water solution, ethyl orthosilicate (8 wt%) and ammonia water (5.5 wt%) were added, and SiO 2 was grown in situ at 30℃for 12 hours, with an average particle size of 600nm.
(2) And (3) spraying LiOH solution with the concentration of 10% on one side of the treated cellulose, and standing until the solution is air-dried.
(3) And (3) spraying 0.3g/cm 2 of cellulose acetate on the other side of the cellulose to prepare the all-weather multi-scene refrigeration cellulose.
(4) In an outdoor environment, the temperature of the cellulose white balance (K-type thermocouple) is measured by a temperature measuring device and is reduced by 17.8 ℃, and after 10 times of washing, the temperature reducing effect is measured again and is 17.5 ℃; average cooling at night is 5.5 ℃, after 10 times of washing, the cooling effect is 5.2 DEG C
(5) In an indoor environment, a drop of water (about 200 μl) was dropped on the skin surface and an all-weather refrigerating cellulose fabric was covered thereon, and the total evaporation time of the water was measured to be 5.5min, the average cooling effect was 5.2 ℃, and after 10 washes, the cooling effect was measured again to be 5.1 ℃.
As shown in fig. 1, a large amount of nano-diameter silica grows on the fiber of the all-weather and multi-scene refrigerating cellulose fabric, and the silica has good scattering effect on visible light.
As shown in fig. 2, the sprayed cellulose acetate forms a multi-pore hydrophobic film on the surface of the fabric, which can effectively cover the cellulose fabric, so that the silica cannot be seen. When the water droplets are on the hydrophobic side of the cellulosic fabric, the water will be transported along the hydrophobic side (cellulose acetate) to the hydrophilic side (cellulose).
As shown in fig. 3, the all-weather, multi-scene refrigerating cellulose fabric has a reflectivity of more than 90% in the visible light band and an emissivity of more than 90% in the mid-infrared band, which indicates that the prepared cellulose fabric exhibits higher solar reflectance and mid-infrared light emissivity.
As shown in fig. 4, the hydrophobic surface contact angle of the all-weather, multi-scene refrigerant cellulose fabric is 151.3 °, and the hydrophobic surface thereof has a large water contact angle, thus exhibiting high hydrophobicity.
Note that: reference may be made to the standard:
contact angle measurement method for measuring surface wettability of DB 44/T1872-2016 textile
GB/T42694-2023 detection and evaluation of anti-wetting properties of textile surfaces contact and rolling angles.
Comparative example 1:
(1) The cellulose fabric was placed in an ethanol-water solution, ethyl orthosilicate (10 wt%) and ammonia water (1 wt%) were added, and the in-situ growth of SiO 2,SiO2 was carried out at 30℃for 12 hours with an average particle size of 200nm.
(2) In an outdoor environment, the temperature of a (K-type thermocouple) cellulose white balance is measured by a temperature measuring device and is reduced by 5.9 ℃, and after 10 times of washing, the temperature reducing effect is measured again to be 5.7 ℃; the average temperature is reduced by 0.8 ℃ at night, and after 10 times of washing, the temperature reduction effect is measured again to be 0.8 ℃.
(2) In an indoor environment, a drop of water (about 200 μl) was dropped on the skin surface and the all-weather refrigerated cellulose fabric was covered thereon, and the total evaporation time of the water was measured to be 11min, the average cooling effect was 1.0 ℃, and after 10 washes, the cooling effect was measured again to be 1.0 ℃.
Comparative example 2:
(1) Spraying NaOH solution with the concentration of 5% on one side of the cellulose fabric, and standing until the solution is air-dried.
(2) The other side of the cellulose fabric was sprayed with 0.05g/cm 2 of cellulose acetate.
(3) In an outdoor environment, the temperature of the cellulose white balance (K-type thermocouple) is measured by a temperature measuring device and is reduced by 7.7 ℃, and after 10 times of washing, the temperature reducing effect is measured again to be 7.6 ℃; the average cooling temperature at night is 4.9 ℃, and after 10 times of washing, the cooling effect is 4.5 ℃ after the second measurement.
(2) In an indoor environment, a drop of water (about 200 μl) was dropped on the skin surface and an all-weather refrigerating cellulose fabric was covered thereon, the total evaporation time of the water was measured to be 11min, the average cooling effect during evaporation was 3.9 ℃, and after 10 washes, the cooling effect was measured again to be 3.9 ℃.
The foregoing description is only of the preferred embodiments of the invention, and all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (6)
1. The preparation method of the all-weather and multi-scene refrigeration cellulose is characterized by comprising the following steps of: the method comprises the following steps:
(1) Carrying out chemical treatment on the cellulose fabric to enable SiO 2 to grow on the surface of the cellulose in situ;
(2) Uniformly spraying an alkaline solution on one side of the cellulose fabric after the reaction;
(3) And uniformly spraying cellulose acetate on the other surface of the cellulose fabric to prepare all-weather and multi-scene refrigeration cellulose.
2. The method of manufacturing according to claim 1, characterized in that: the chemical treatment in the step (1) is to put the cellulose fabric into water-ethanol solution of tetraethoxysilane and add ammonia water for reaction.
3. The method of manufacturing according to claim 1, characterized in that: the particle size of SiO 2 in the step (1) is 200 nm-2000 nm.
4. The method of manufacturing according to claim 1, characterized in that: the alkaline solution in the step (2) is KOH, naOH or LiOH, and the concentration of the alkaline solution is 5-20wt%.
5. The method of manufacturing according to claim 1, characterized in that: the spraying amount of the cellulose acetate in the step (3) is 0.05-1g/cm 2.
6. An all-weather, multi-scene refrigerant cellulose produced by the method of any one of claims 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311652929.8A CN118007413A (en) | 2023-12-05 | 2023-12-05 | All-weather multi-scene refrigeration cellulose fabric and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311652929.8A CN118007413A (en) | 2023-12-05 | 2023-12-05 | All-weather multi-scene refrigeration cellulose fabric and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118007413A true CN118007413A (en) | 2024-05-10 |
Family
ID=90952504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311652929.8A Pending CN118007413A (en) | 2023-12-05 | 2023-12-05 | All-weather multi-scene refrigeration cellulose fabric and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118007413A (en) |
-
2023
- 2023-12-05 CN CN202311652929.8A patent/CN118007413A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Luo et al. | Outdoor personal thermal management with simultaneous electricity generation | |
| Li et al. | A materials perspective on radiative cooling structures for buildings | |
| Zhu et al. | Recent advances in textile materials for personal radiative thermal management in indoor and outdoor environments | |
| Song et al. | Novel passive cooling composite textile for both outdoor and indoor personal thermal management | |
| Zuo et al. | Smart fibers and textiles for personal thermal management in emerging wearable applications | |
| Miao et al. | Sandwich-Structured textiles with hierarchically nanofibrous network and Janus wettability for outdoor personal thermal and moisture management | |
| Li et al. | A Janus textile capable of radiative subambient cooling and warming for multi‐scenario personal thermal management | |
| Zhang et al. | Scalable bio-skin-inspired radiative cooling metafabric for breaking trade-off between optical properties and application requirements | |
| CN114457509A (en) | Ultrathin radiation refrigeration fiber membrane based on micro-nano multilevel structure and preparation method thereof | |
| CN110387751A (en) | It is a kind of to radiate from cooling function fabric and preparation method thereof | |
| Li et al. | Recent progress in organic-based radiative cooling materials: fabrication methods and thermal management properties | |
| CN115323801B (en) | Coated textile with all-day efficient passive radiation cooling function and preparation method thereof | |
| CN114211829B (en) | Dual-mode thermal regulation metamaterial fabric | |
| Dong et al. | Progress in passive daytime radiative cooling: A review from optical mechanism, performance test, and application | |
| CN115323626A (en) | Polymer and functional complex composite thermal management material and preparation method and application thereof | |
| Zhang et al. | In situ formation of SiO2 nanospheres on common fabrics for broadband radiative cooling | |
| CN118007413A (en) | All-weather multi-scene refrigeration cellulose fabric and preparation method thereof | |
| CN209178283U (en) | Scattering radiation cooling accumulates microballoon coating at random | |
| CN113622204A (en) | Heat-preservation and heat-dissipation dual-function heat management fabric and preparation method thereof | |
| CN111576044B (en) | Preparation method of high-efficiency radiation cooling fiber | |
| Wang et al. | Passive daytime radiative cooling materials toward real-world applications | |
| CN114892417B (en) | Textile containing daytime radiation refrigeration porous coating, and preparation method and application thereof | |
| CN216832638U (en) | Emergent moisture absorption heat preservation surface fabric and outdoor emergent blanket | |
| CN112021687A (en) | Radiation refrigeration protective clothing and preparation method thereof | |
| Chen et al. | Cold protection made easy: A fiber-based fabric with enhanced sunlight absorption and unidirectional sweat transport |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |