CN117898508A - Self-adjusting heat-preserving and cooling fabric - Google Patents
Self-adjusting heat-preserving and cooling fabric Download PDFInfo
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- CN117898508A CN117898508A CN202211246652.4A CN202211246652A CN117898508A CN 117898508 A CN117898508 A CN 117898508A CN 202211246652 A CN202211246652 A CN 202211246652A CN 117898508 A CN117898508 A CN 117898508A
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- 239000004744 fabric Substances 0.000 title claims abstract description 140
- 238000001816 cooling Methods 0.000 title claims abstract description 48
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 48
- 239000011148 porous material Substances 0.000 claims abstract description 40
- 230000000694 effects Effects 0.000 claims abstract description 32
- 210000004243 sweat Anatomy 0.000 claims abstract description 21
- 230000017525 heat dissipation Effects 0.000 claims abstract description 17
- 230000005855 radiation Effects 0.000 claims abstract description 14
- 238000002360 preparation method Methods 0.000 claims abstract description 6
- 239000000835 fiber Substances 0.000 claims description 37
- 229910052751 metal Inorganic materials 0.000 claims description 20
- 239000002184 metal Substances 0.000 claims description 20
- 239000004698 Polyethylene Substances 0.000 claims description 18
- -1 polyethylene Polymers 0.000 claims description 18
- 229920000573 polyethylene Polymers 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 16
- 238000003825 pressing Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000004952 Polyamide Substances 0.000 claims description 8
- 238000010521 absorption reaction Methods 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 229920002647 polyamide Polymers 0.000 claims description 8
- 238000010792 warming Methods 0.000 claims description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 229910052709 silver Inorganic materials 0.000 claims description 4
- 239000004332 silver Substances 0.000 claims description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 230000004048 modification Effects 0.000 claims description 3
- 238000012986 modification Methods 0.000 claims description 3
- 230000004888 barrier function Effects 0.000 claims description 2
- 238000007747 plating Methods 0.000 claims description 2
- 239000012528 membrane Substances 0.000 claims 2
- 239000000203 mixture Substances 0.000 claims 1
- 238000005057 refrigeration Methods 0.000 abstract description 12
- 238000004321 preservation Methods 0.000 abstract description 10
- 238000009413 insulation Methods 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 4
- 239000002041 carbon nanotube Substances 0.000 description 4
- 229910021393 carbon nanotube Inorganic materials 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 239000004753 textile Substances 0.000 description 4
- 239000002250 absorbent Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000002310 reflectometry Methods 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000985 reflectance spectrum Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 230000035900 sweating Effects 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
The invention provides a self-adjusting heat-preserving and cooling fabric, which comprises a water-absorbing fabric layer and an infrared high-reflection porous hydrophobic layer arranged on the inner side of the water-absorbing fabric layer, wherein the infrared emissivity of the water-absorbing fabric layer in a dry state is lower than 30%, the infrared emissivity in a wet state is higher than 80%, the inside of pores of the infrared high-reflection porous hydrophobic layer is of a hydrophilic structure, and the infrared high-reflection porous hydrophobic layer is close to one side of the skin to form a unidirectional moisture-conducting structure from inside to outside. According to the invention, the hydrophilic fabric outer layer with low infrared emissivity and the infrared high-reflection porous hydrophobic inner layer form a unidirectional moisture-guiding temperature-regulating structure, so that the infrared radiation heat dissipation effect of the fabric in a dry state can be inhibited, and the warm keeping function is realized; when the human body sweats to make the fabric in a wet state, the whole fabric is converted into a high infrared emission characteristic, so that the heat dissipation effect is improved, and finally, the automatic adjustment of heat preservation and refrigeration is realized. The invention has the advantages of simple preparation method, novel structure, convenient use and remarkable economic value.
Description
Technical Field
The invention relates to the technical field of functional fabrics, in particular to a self-adjusting warm-keeping and cooling fabric.
Background
With the development of textile scientific research technology and the demands of people for life quality, the fabric is gradually developed towards a multifunctional and intelligent direction. Wherein, the hot and wet comfortable fabric can make the clothes have the functions of warm in winter and cool in summer. Today, intelligent temperature-adjustable fabrics have been gradually applied to garment manufacturing with significant effects on improving thermal comfort and wear. However, in the prior art, most intelligent temperature regulating fabrics realize the temperature regulating function of the fabrics by means of electric heating or heat dissipation of fans, and the fabrics have the defects of energy consumption, inconvenience in wearing and influence on comfort.
In recent years, intelligent temperature regulating fabrics are paid attention to by researchers, and the intelligent temperature regulation is mainly realized by a heat radiation regulation method, a heat convection regulation method and a heat conduction regulation method. Patent CN113907583a discloses a portable structural thermal insulation material, a thermal bag and a manufacturing method thereof, and the thermal bag comprises an outer layer, an intermediate layer and an inner layer, wherein the outer layer is an infrared low emissivity layer, the intermediate layer is a heat conduction heat insulation layer, and the inner layer is an infrared barrier layer. The method constructs the structural thermal insulation material with the infrared low emission, heat conduction blocking and infrared absorption blocking modes, and simultaneously blocks the heat conduction and heat radiation and heat dissipation modes, thereby improving the thermal insulation performance of the material. Patent CN113561578a discloses a radiation refrigeration fabric and a design method thereof, including a laminated first layer structure and a second layer structure, the first layer structure is a reflective film, the second layer structure is a fabric layer, which can reflect visible-near infrared band and emit middle infrared band. The method realizes the heat insulation and refrigeration functions by emitting sunlight and mid-infrared rays. However, the above methods cannot achieve both the heating and cooling effects.
Patent CN110565176a discloses a carbon nanotube-based temperature-adjustable fabric and a preparation method thereof, comprising: the inner structure layer comprises a carbon nano tube layer and a metal layer covered on the carbon nano tube layer, and the infrared light emissivity of the metal layer is lower than that of the carbon nano tube layer; and the outer structure layer at least covers the first surface and the second surface of the inner structure layer, the first surface and the second surface are opposite to each other in the thickness direction of the inner structure layer, and the outer structure layer is provided with a hole structure and can transmit infrared rays. The method utilizes the difference of infrared emittance in the front and back directions of the inner structural layer, can automatically regulate temperature according to the change of temperature of the environment, and simultaneously realizes the heat preservation or refrigeration effect. Although the method can realize the heat preservation and refrigeration effects, the method needs to realize different effects by changing the using surface, and is inconvenient for the wearable fabric.
In view of the foregoing, there is a need for an improved self-regulating thermal and cooling fabric and application thereof that addresses the above-described problems.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide the self-adjusting warm-keeping and cooling fabric, wherein a one-way moisture-guiding temperature-adjusting structure is formed by the outer layer of the hydrophilic fabric with low infrared emissivity and the inner layer of the infrared high-reflection porous hydrophobic layer, so that the infrared radiation heat dissipation effect of the fabric in a dry state can be restrained, the warm-keeping function is realized, when a human body sweats to enable the fabric to be in a wet state, the whole fabric is converted into a high infrared emission material, thereby improving the heat dissipation effect, and finally realizing the automatic adjustment of the warm keeping and the refrigeration.
In order to achieve the above-mentioned aim, the invention provides a self-adjusting heat-preserving and cooling fabric, which comprises a water-absorbing fabric layer and an infrared high-reflection porous hydrophobic layer arranged on the inner side of the water-absorbing fabric layer, wherein the infrared emissivity of the water-absorbing fabric layer in a dry state is lower than 30%, the infrared emissivity in a wet state is higher than 80%, the inside of the pores of the infrared high-reflection porous hydrophobic layer is a hydrophilic structure, and the infrared high-reflection porous hydrophobic layer is close to one side of the skin to form a unidirectional moisture-conducting structure from inside to outside.
Preferably, the infrared emissivity of the water absorbing fabric layer in wet state is higher than 90%, preferably higher than 95%; the infrared emissivity in the dry state is less than 20%, preferably less than 10%.
Preferably, the difference in water contact angle between the water absorbing textile layer and the infrared highly reflective porous hydrophobic layer is greater than 40 °, preferably greater than 50 °, more preferably greater than 90 °.
Preferably, the water-absorbing fabric layer is a polyamide fiber fabric, a hydrophilic polyethylene fiber fabric or a blended fabric of the polyamide fiber fabric and the hydrophilic polyethylene fiber fabric; the hydrophilic polyethylene fiber fabric is a polyethylene fiber fabric with a special-shaped cross section or a polyethylene fiber fabric subjected to hydrophilic coating or grafting modification; the special-shaped cross section is a peanut-shaped or cross-shaped cross section.
Preferably, the thickness of the infrared high-reflection porous hydrophobic layer is 200-400 mu m, the pore size is 0.1-2mm, and the pore spacing is 3-20mm.
Preferably, the inside of the pores of the infrared high-reflection porous hydrophobic layer is filled with a hydrophilic material, the hydrophilic material is pre-filled in the pores of the infrared high-reflection porous hydrophobic layer, or the infrared high-reflection porous hydrophobic layer is coated on the inner side of the water-absorbing fabric layer, and then the hydrophilic fibers of the water-absorbing fabric layer are filled in the pores of the infrared high-reflection porous hydrophobic layer through pressing.
Preferably, the infrared highly reflective porous hydrophobic layer is a porous metal film; the porous metal film is preferably a metal film formed by one or more of gold, silver and aluminum.
Preferably, the porous metal film is adhered to the inner side of the water absorbing fabric layer by coating and pressing, and the hydrophilic fiber is pressed and filled in the pores of the porous metal film in the pressing process.
Preferably, the inner side of the water absorbent fabric layer is roughened to form hydrophilic short fibers so that the hydrophilic short fibers are filled in the pores of the porous metal film by pressing.
The application of the self-adjusting heat-preserving and cooling fabric according to any one of the above, wherein the self-adjusting heat-preserving and cooling fabric is used for preparing close-fitting heat-preserving and cooling clothes, when the self-adjusting heat-preserving and cooling fabric is in a dry state, the infrared blocking effect of the infrared high-reflection porous hydrophobic layer endows the clothes with heat-preserving effect, and when human sweat infiltrates the self-adjusting heat-preserving and cooling fabric, the self-adjusting heat-preserving and cooling fabric has infrared high-emissivity so as to realize the infrared radiation heat dissipation and cooling function.
The beneficial effects of the invention are as follows:
1. According to the self-adjusting warm-keeping and cooling fabric, the hydrophilic fabric outer layer with low infrared emissivity and the infrared high-reflection porous hydrophobic inner layer form the one-way moisture-guiding temperature-adjusting structure, and the arrangement is such that when the fabric is in a dry state, heat is prevented from being dissipated in an infrared radiation mode through the infrared high-reflection effect of the inner infrared high-reflection porous hydrophobic layer, so that a warm-keeping effect is achieved. When the temperature of a human body rises to sweat due to heat preservation, the sweat can be guided to the outer water-absorbing fabric layer from the pores of the infrared high-reflection porous hydrophobic layer rapidly through the hydrophilic unidirectional moisture-conducting structure of the inner water-absorbing layer, so that the pores of the water-absorbing fabric layer and the inner layer are soaked, and the whole fabric is converted into the infrared high-emissivity property at the moment, thereby realizing the refrigeration effect through infrared emission and heat dissipation, preventing the phenomenon of overheat discomfort of the human body caused by excessive heat preservation. In addition, sweat can also evaporate fast because of one-way moisture guiding structure and dispel, can take away the heat on the one hand, on the other hand can keep the dry and comfortable nature of fabric.
2. According to the sweat permeation and outward transmission device, sweat can rapidly permeate and transmit under the action of pressure difference through the moisture absorption difference of the inner layer and the outer layer and the porous structure of the inner layer; the hydrophilic material is filled in the pores of the inner layer, so that sweat can be conveniently transmitted and led out from the pores, and sweat can be conveniently infiltrated in the pores, and the inner layer also has infrared high-emission characteristic, and the infrared radiation radiating effect is improved. The invention has the advantages of simple preparation method, novel structure, convenient use, convenient large-scale manufacture and application and remarkable economic value.
Drawings
FIG. 1 is a schematic diagram of a self-regulating warming and cooling fabric provided by the invention.
FIG. 2 is an infrared reflectance spectrum of the self-adjusting thermal and cooling fabric prepared in example 2 in dry and wet states.
FIG. 3 is a graph showing the temperature profile of a self-regulating thermal and cooling fabric (sample) and cotton fabric prepared in example 2 over time.
FIG. 4 is a graph showing the temperature profile of a self-regulating thermal and cooling fabric (sample) and cotton fabric prepared in example 2 over time.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to specific embodiments.
It should be further noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and/or processing steps closely related to aspects of the present invention are shown in the specific embodiments, and other details not greatly related to the present invention are omitted.
In addition, it should be further noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Referring to fig. 1, the self-adjusting heat-preserving and cooling fabric provided by the invention comprises a water-absorbing fabric layer and an infrared high-reflection porous hydrophobic layer arranged on the inner side of the water-absorbing fabric layer, wherein the infrared emissivity of the water-absorbing fabric layer in a dry state is lower than 30%, the infrared emissivity in a wet state is higher than 80%, the inside of the pores of the infrared high-reflection porous hydrophobic layer is of a hydrophilic structure, and the infrared high-reflection porous hydrophobic layer is close to one side of the skin to form a unidirectional moisture-conducting structure from inside to outside. When the fabric is in a dry state, the infrared high-reflection effect of the inner infrared high-reflection porous hydrophobic layer can prevent heat from being dissipated through infrared radiation, so that the warm keeping effect is realized. When the temperature of a human body rises to sweat due to heat preservation, the sweat can be guided to the outer water-absorbing fabric layer from the pores of the infrared high-reflection porous hydrophobic layer rapidly through the hydrophilic unidirectional moisture-conducting structure of the inner water-absorbing layer, so that the pores of the water-absorbing fabric layer and the inner layer are soaked, and the whole fabric is converted into the infrared high-emissivity property at the moment, thereby realizing the refrigeration effect through infrared emission and heat dissipation, preventing the phenomenon of overheat discomfort of the human body caused by excessive heat preservation. In addition, sweat can also evaporate fast because of one-way moisture guiding structure and dispel, can take away the heat on the one hand, on the other hand can keep the dry and comfortable nature of fabric.
Preferably, the water-absorbing fabric layer has an infrared emissivity in the wet state of more than 90%, more preferably more than 95%; the infrared emissivity in the dry state is less than 20%, preferably less than 10%. For example: the water-absorbing fabric layer is a polyamide fiber fabric, a hydrophilic polyethylene fiber fabric or a blended fabric of the polyamide fiber fabric and the hydrophilic polyethylene fiber fabric; the hydrophilic polyethylene fiber fabric is a polyethylene fiber fabric with a special-shaped cross section or a polyethylene fiber fabric modified by hydrophilic coating or grafting; the special-shaped cross section is a peanut-shaped or cross-shaped cross section. The polyamide fabric is an infrared high-permeability material in a dry state, namely, the infrared absorption (emission) rate is low, so that the infrared high-reflection characteristic of the inner layer is not influenced, the heat dissipation caused by the infrared emission of the outer layer is not generated, and the heat preservation effect is reduced. The polyethylene fiber fabric also has infrared high-permeability characteristic, and because a one-way moisture-guiding structure is required to be constructed so as to be moisture-guided as soon as possible to form an infrared emission structure when sweating, the polyethylene fiber fabric is required to be subjected to high-speed operation, and the water absorption of the polyethylene fiber fabric can be improved by utilizing the capillary effect of the polyethylene fiber with the special-shaped cross section.
In some embodiments, the difference in water contact angle between the water-absorbing textile layer and the infrared highly reflective porous hydrophobic layer is greater than 40 °, preferably greater than 50 °, more preferably greater than 90 °, and the contact angle of the water-absorbing textile layer is less than the infrared highly reflective porous hydrophobic layer. In other embodiments, the moisture absorption of the water-absorbing fabric layer is greater than the infrared highly reflective porous hydrophobic layer and the moisture absorption is 1.2 to 5 times greater than the infrared highly reflective porous hydrophobic layer. By the difference in hygroscopicity and the porous structure of the inner layer, sweat is quickly permeated and transported outwards under the action of pressure difference.
The thickness of the infrared highly reflective porous hydrophobic layer is 200-400 μm, the pore size is 0.1-2mm, the pore spacing is 3-20mm, and the porosity is 10-50%, preferably 20-30%.
The inside of the pores of the infrared high-reflection porous hydrophobic layer is filled with hydrophilic materials, the hydrophilic materials are prefabricated and filled in the pores of the infrared high-reflection porous hydrophobic layer, or the infrared high-reflection porous hydrophobic layer is coated on the inner side of the water-absorbing fabric layer, and then the hydrophilic fibers of the water-absorbing fabric layer are filled in the pores of the infrared high-reflection porous hydrophobic layer through pressing. The pores are filled with hydrophilic materials, so that sweat can be conveniently transmitted and led out from the pores, and sweat can be conveniently infiltrated into the pores, and the inner layer also has infrared high-emission characteristics, and the infrared radiation radiating effect is improved.
The infrared high-reflection porous hydrophobic layer is a porous metal film; the porous metal film is preferably a metal film formed of one or more of gold, silver, and aluminum. Preferably, the porous metal film is adhered to the inner side of the water-absorbing fabric layer by plating and pressing, and the hydrophilic fiber is press-filled in the pores of the porous metal film during the pressing.
Preferably, the inner side of the water-absorbent fabric layer is subjected to roughening treatment to form hydrophilic short fibers so that the hydrophilic short fibers are filled in the pores of the porous metal film by pressing.
The application of the self-adjusting heat-preserving and cooling fabric is used for preparing close-fitting heat-preserving and cooling clothes, when the self-adjusting heat-preserving and cooling fabric is in a dry state, the infrared blocking effect of the infrared high-reflection porous hydrophobic layer gives the clothes a heat-preserving effect, when sweat of a human body makes the self-adjusting heat-preserving and cooling fabric in a wet state, the self-adjusting heat-preserving and cooling fabric is converted into infrared high-emissivity, and therefore the infrared radiation heat dissipation and cooling functions are achieved.
Example 1
A self-regulating warm-keeping and cooling fabric comprises an inner porous aluminum film layer and an outer polyamide fiber fabric layer. Wherein the thickness of the porous aluminum film is about 300 μm, the pore size is about 0.8mm, the pore spacing is 10mm, and the pores are filled with polyamide fibers.
Examples 2 to 7
The self-adjusting thermal and cooling fabric is different from example 1 in that the pore size and pore spacing of the porous aluminum film are as shown in table 1, and the other is substantially the same as example 1, and is not described here again.
TABLE 1 preparation conditions and Performance test results for examples 1-7
As can be seen from FIG. 2, the fabric of the invention has a higher reflectivity of 8-13 μm in a dry state, which indicates that the heat dissipation is slow, thus having good warm-keeping effect; in the wet state, the reflectivity of 8-13 mu m is obviously reduced, and the heat dissipation is enhanced, so that the temperature can be spontaneously reduced, and the temperature is regulated and kept constant.
As can be seen from fig. 3, the fabric prepared by the present invention can make its temperature higher than the skin surface temperature and higher than the cotton fabric in a low temperature environment, which indicates that the thermal insulation effect of the present invention is better. As can be seen from fig. 4, the fabric prepared according to the present invention has a slightly lower temperature than the cotton fabric in the case of sweat wetting, so that heat dissipation is accelerated when sweat is generated due to excessive heat retention in practical use, thereby maintaining a relatively comfortable temperature of the human body.
As can be seen from Table 1, when the hole pitch is too small, the reflectance of 8 to 13 μm in the cooling mode is large, indicating that the infrared radiation cooling effect is poor. This is because the holes are too small to conduct moisture in one direction, resulting in failure to achieve self-regulating refrigeration. When the holes are too large, the reflectance of the thermal insulation mode is reduced by 8 to 13 μm, because the effective area of the porous aluminum film is reduced, resulting in a reduction in reflectance to infrared rays, and thus a reduction in thermal insulation effect. When the hole spacing is too large, the heat preservation effect is better, but the reflectance of the refrigeration mode is obviously reduced due to the fact that the unidirectional humidity guiding effect is poor, and therefore the refrigeration effect is weaker.
Example 2
A self-regulating thermal and cooling fabric, which differs from example 1 in that the porous aluminum film is replaced with a porous silver film. The other points are substantially the same as those of embodiment 1, and will not be described here again.
In summary, according to the self-adjusting warm-keeping and cooling fabric provided by the invention, the hydrophilic fabric outer layer with low infrared emissivity and the infrared high-reflection porous hydrophobic inner layer form a one-way moisture-guiding temperature-adjusting structure, so that the infrared radiation heat dissipation effect of the fabric in a dry state can be inhibited, and the warm-keeping function is realized; when the human body sweats to make the fabric in a wet state, the whole fabric is converted into a high infrared emission characteristic, so that the heat dissipation effect is improved, and finally, the automatic adjustment of heat preservation and refrigeration is realized. The invention has the advantages of simple preparation method, novel structure, convenient use and remarkable economic value.
The above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention.
Claims (10)
1. The self-adjusting warm-keeping and cooling fabric is characterized by comprising a water-absorbing fabric layer and an infrared high-reflection porous hydrophobic layer arranged on the inner side of the water-absorbing fabric layer, wherein the infrared emissivity of the water-absorbing fabric layer in a dry state is lower than 30%, the infrared emissivity of the water-absorbing fabric layer in a wet state is higher than 80%, the inside of a pore of the infrared high-reflection porous hydrophobic layer is of a hydrophilic structure, and the infrared high-reflection porous hydrophobic layer is close to one side of the skin to form a unidirectional moisture-conducting structure from inside to outside.
2. Self-regulating warming and cooling fabric according to claim 1, characterized in that the infrared emissivity of the water-absorbing fabric layer in wet state is higher than 90%, preferably higher than 95%; the infrared emissivity in the dry state is less than 20%, preferably less than 10%.
3. The self-regulating, warming and cooling fabric of claim 1 wherein the moisture absorption of the water absorbing fabric layer is greater than the infrared highly reflective porous hydrophobic layer and the moisture absorption is 1.2-5 times the infrared highly reflective porous hydrophobic layer.
4. The self-regulating thermal and cooling fabric according to claim 2, wherein the water-absorbing fabric layer is a polyamide fiber fabric, a hydrophilic polyethylene fiber fabric or a blend of both; the hydrophilic polyethylene fiber fabric is a polyethylene fiber fabric with a special-shaped cross section or a polyethylene fiber fabric subjected to hydrophilic coating or grafting modification; the special-shaped cross section is a peanut-shaped or cross-shaped cross section.
5. The self-regulating, thermal and cooling fabric of claim 1 wherein the infrared highly reflective porous hydrophobic layer has a thickness of 200-400 μm, a pore size of 0.1-2mm and a pore spacing of 3-20mm.
6. Self-regulating warming and cooling fabric according to claim 1, characterized in that the inside of the pores of the infrared highly reflective porous hydrophobic layer is filled with hydrophilic material, which is pre-filled in the pores of the infrared highly reflective porous hydrophobic layer, or the infrared highly reflective porous hydrophobic layer is coated on the inside of the water-absorbing fabric layer first, and then the hydrophilic fibers of the water-absorbing fabric layer are filled in the pores of the infrared highly reflective porous hydrophobic layer by pressing.
7. The self-regulating, warming and cooling fabric of claim 1 wherein said infrared highly reflective porous hydrophobic layer is a porous metal film; the porous metal film is preferably a metal film formed by one or more of gold, silver and aluminum.
8. The self-regulating thermal and cooling fabric of claim 7 wherein the porous metal membrane is adhered to the inside of the water absorbing fabric layer by plating and pressing, and the hydrophilic fibers are press-filled into the pores of the porous metal membrane during the pressing process.
9. The self-regulating thermal and cooling fabric according to claim 6 or 8, wherein the inner side of the water absorbing fabric layer is roughened to form hydrophilic short fibers so that the hydrophilic short fibers are filled in the pores of the porous metal film by pressing.
10. Use of a self-regulating thermal and cooling fabric according to any one of claims 1 to 9 for the preparation of close-fitting thermal and cooling garments, wherein the infrared barrier effect of the infrared highly reflective porous hydrophobic layer imparts a thermal effect to the garment when the self-regulating thermal and cooling fabric is in a dry state, and wherein the self-regulating thermal and cooling fabric has a high infrared emissivity to achieve an infrared radiation heat dissipation cooling function when human sweat infiltrates the self-regulating thermal and cooling fabric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211246652.4A CN117898508A (en) | 2022-10-12 | 2022-10-12 | Self-adjusting heat-preserving and cooling fabric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211246652.4A CN117898508A (en) | 2022-10-12 | 2022-10-12 | Self-adjusting heat-preserving and cooling fabric |
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| Publication Number | Publication Date |
|---|---|
| CN117898508A true CN117898508A (en) | 2024-04-19 |
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|---|---|---|---|
| CN202211246652.4A Pending CN117898508A (en) | 2022-10-12 | 2022-10-12 | Self-adjusting heat-preserving and cooling fabric |
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| CN (1) | CN117898508A (en) |
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- 2022-10-12 CN CN202211246652.4A patent/CN117898508A/en active Pending
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