CN217997460U - Radiation cooling yarn, radiation cooling fabric and garment - Google Patents
Radiation cooling yarn, radiation cooling fabric and garment Download PDFInfo
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- CN217997460U CN217997460U CN202123121431.8U CN202123121431U CN217997460U CN 217997460 U CN217997460 U CN 217997460U CN 202123121431 U CN202123121431 U CN 202123121431U CN 217997460 U CN217997460 U CN 217997460U
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Abstract
The application provides a radiation cooling yarn, this radiation cooling yarn include two piece at least and the radiation cooling fibre of stranding, and each radiation cooling fibre includes fibre body and the cladding radiation cooling layer on fibre body surface, and the radiation cooling layer includes the polyurethane base member and inlays the radiation cooling granule of establishing in the polyurethane base member. The radiation cooling layer has a micropore structure, the aperture of each micropore is 0.01-15 mu m, and the radiation cooling yarn has a good radiation cooling effect and good air permeability and moisture permeability. The application also provides a radiation cooling fabric and a garment comprising the radiation cooling yarn.
Description
Technical Field
The application relates to the technical field of garment fabrics, in particular to radiation cooling yarns, radiation cooling fabrics and garments.
Background
Along with the development of society, the outdoor activity time of people is increasing day by day, and people's performance demand for the clothing surface fabric is constantly promoting. When the outdoor environment temperature is higher, sunlight irradiates the surface of the traditional fabric for clothes to enable the fabric to generate heat, so that the human body can easily discharge sweat and generate stuffy feeling, and the wearing experience of people is influenced. Therefore, it is necessary to provide a fabric with good cooling effect and air and moisture permeability to meet the higher requirement of people.
SUMMERY OF THE UTILITY MODEL
In view of this, this application provides a radiation cooling yarn, this yarn is formed by radiation cooling fibre plying, has good cooling effect, and the clothing surface fabric that adopts this radiation cooling yarn preparation can obtain better radiation cooling effect and ventilative moisture permeability, promotes human body and wears to experience.
Specifically, first aspect, this application provides a radiation cooling yarn, radiation cooling yarn includes two at least doubled radiation cooling fibers, each radiation cooling fiber includes fibre body and cladding in the radiation cooling layer on fibre body surface, radiation cooling layer includes the polyurethane base member and inlays to be established radiation cooling granule in the polyurethane base member.
In the embodiment of the application, the fiber body is embedded with radiation cooling particles.
In the embodiment of the application, the volume of the radiation cooling particles in the radiation cooling layer is 1-40%.
In the embodiment of the application, the thickness of the radiation cooling layer is 2-40 μm.
In the embodiment of the application, the particle size of the radiation cooling particles is 0.2-4 μm.
In the embodiment of the application, the radiation cooling layer has a micropore structure, and the pore diameter of micropores is 0.01-15 μm.
In an embodiment of the present application, the fiber body has a diameter of 10 μm to 2mm.
In an embodiment of the present application, the thickness of the radiation cooling layer is less than or equal to the diameter of the fiber body.
In an embodiment of the present application, a ratio of a thickness of the radiation cooling layer to a radius of the fiber body is 1: (1-5).
The radiation cooling yarn that this application first aspect provided has better radiation cooling effect and ventilative moisture permeability.
In a second aspect, the present application provides a radiation cooling fabric, which comprises the radiation cooling yarn provided by the first aspect of the present application.
The radiation cooling surface fabric that this application second aspect provided simple structure has stable long-term radiation cooling effect.
In a third aspect, the present application also provides a garment comprising the radiation cooling yarn provided in the first aspect of the present application.
Drawings
FIG. 1 is a schematic structural view of a radiation cooling yarn according to an embodiment of the present application;
FIG. 2 is a schematic structural view of a radiation cooling yarn according to another embodiment of the present application;
FIG. 3 is a schematic cross-sectional view of a radiant cooling fiber according to an embodiment of the present disclosure;
FIG. 4 is a schematic cross-sectional view of a radiant cooling fiber according to another embodiment of the present application;
FIG. 5 is a schematic view of the radiation cooling principle of the radiation cooling layer in the embodiment of the present application;
FIG. 6 is a schematic structural view of a fiber defect on an outer surface of a radiant cooling yarn according to an embodiment of the present application;
FIG. 7 is a schematic structural view of a radiation cooling fabric in an embodiment of the present application;
fig. 8 is a schematic view of the structure of the garment in the embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
Referring to fig. 1 to 4, an embodiment of the present application provides a radiation cooling yarn 100, and fig. 1 and 2 are schematic structural views of the radiation cooling yarn 100 in the embodiment of the present application; FIGS. 3 and 4 are schematic cross-sectional structural views of the radiant cooling fiber 10 in the embodiments of the present application. The radiation cooling yarn 100 of the embodiment of the present application includes at least two radiation cooling fibers 10 that are doubled, and each radiation cooling fiber 10 includes a fiber body 1 and a radiation cooling layer 2 that covers the surface of the fiber body 1, and in some embodiments of the present application, radiation cooling particles 22 are embedded inside the fiber body 1. The radiation cooling layer 2 comprises a polyurethane matrix 21 and radiation cooling particles 22 embedded in the polyurethane matrix 21. The radiation cooling yarn is used for preparing fabrics and clothes, so that the fabrics and the clothes can obtain good radiation cooling effect and air and moisture permeability.
In the embodiment of the present application, the radiation cooling yarn 100 is formed by plying at least two same or different radiation cooling fibers 10, and the plying manner may be twisting plying or non-twisting plying. Radiation cooling fibre 10 includes fibre body 1 and cladding at the radiation cooling layer 2 on 1 surface of fibre body, and fibre body 1 is the sinle silk of radiation cooling fibre 10 promptly, and radiation cooling layer 2 is the outer coating of sinle silk, also includes fibre body 1 and radiation cooling layer 2 from inside to outside in the radial direction of radiation cooling fibre 10 from inside to outside. The fiber body 1 is an elongated product made of natural or chemical raw materials, that is, the fiber body 1 may be a natural fiber body or a chemical fiber body, the natural fiber body includes but is not limited to one or more of cotton fiber, silk fiber and wool fiber, and the chemical fiber body includes but is not limited to one or more of nylon, polyester fiber and polypropylene fiber. In the examples of the present application, the diameter of the fiber body is 10 μm to 2mm, and specifically, it may be 10 μm, 20 μm, 50 μm, 100 μm, 200 μm, 500 μm, 1mm, 2mm, or the like.
The radiation cooling fiber 10 with the core-shell structure, in which the fiber body 1 is coated with the radiation cooling layer 2, can be prepared by dip-coating or spray-coating the fiber body 1. Specifically, the dip-coating treatment is to fully soak the fiber body 1 in the polyurethane emulsion dispersed with the radiation cooling particles 22, and after the soaking is finished, the radiation cooling layer 2 is formed on the surface of the fiber body 1 through curing; the spraying treatment is to spray polyurethane emulsion dispersed with the radiation cooling particles 22 on the surface of the fiber body 1, and the polyurethane emulsion is solidified on the surface of the fiber body 1 after the spraying treatment is finished to form the radiation cooling layer 2. After dip coating or spray coating, the prepared radiation cooling fiber 10 has a core-shell structure that the radiation cooling layer 2 coats the fiber body 1, the fiber body 1 is equivalent to a core, and the radiation cooling layer 2 is equivalent to a shell. In addition, the radiation cooling fiber 10 prepared by dip-coating treatment can be impregnated into the fiber body 1 by the soaking liquid, namely, the polyurethane emulsion dispersed with the radiation cooling particles 22, and the radiation cooling particles 22 in the soaking liquid can also enter the fiber body 1, so that the radiation cooling particles 22 can be uniformly distributed in the radiation cooling layer 2 and can be embedded into the fiber body 1, and the combination of the radiation cooling particles 22 and the fiber body 1 is more stable, thereby being beneficial to preventing the fiber product from being obviously reduced in radiation cooling function due to the radiation cooling particle loss under the condition of external damage such as abrasion or silk hooking and the like, keeping the long-acting radiation cooling effect of the fiber product, and prolonging the service life of the fiber product. Referring to fig. 3, in some embodiments of the present application, the fiber body 1 is embedded with the radiant cooling particles 22. The yarn 100 with the structure can better reflect visible light, infrared light and the like, and emit heat through the atmospheric window in an infrared radiation mode, so that the yarn has a good radiation cooling effect.
In the embodiment of the present application, the radiation cooling layer 2 has a microporous structure, that is, the polyurethane matrix 21 has a microporous structure, and the radiation cooling particles 22 are uniformly dispersed and embedded in the microporous polyurethane matrix 21. The pore diameter of the micropores of the radiation cooling layer 2 may be 0.01 μm to 15 μm, and specifically, may be, for example, 0.01 μm, 0.02 μm, 0.05 μm, 0.1 μm, 0.2 μm, 0.5 μm, 1 μm, 2 μm, 5 μm, 10 μm, 15 μm, or the like. In the present embodiment, the density of the micropores in the radiation cooling layer 2 may be about 15 hundred million micropores per square centimeter of the radiation cooling layer.
In the present application, the polyurethane matrix 21 not only serves as a dispersion carrier for the radiation cooling particles 22, but also provides a ventilation channel to ensure that the radiation cooling layer 2 has good ventilation and moisture permeability. The polyurethane matrix is used as a dispersion carrier of the radiation cooling particles, so that the structure of the cured radiation cooling layer is more stable, and the fiber can be kept with a more stable radiation cooling effect; in addition, the polyurethane matrix has a micropore structure, so that air molecules and gaseous water molecules in the air can also permeate through micropores of the radiation cooling layer, and the radiation cooling layer is prevented from blocking permeation of hot air and moisture in the fibers, so that the fibers have radiation cooling effect and good air and moisture permeability.
In the embodiment of the present application, the radiation cooling particles 22 mainly play a role in radiation cooling in the radiation cooling layer 2, wherein radiation cooling means that the radiation cooling particles can reflect visible light, infrared light and the like in sunlight, and penetrate through the atmosphere through an atmospheric window in an infrared radiation manner to emit heat, thereby resulting in cooling. Specifically, referring to fig. 5, sunlight a irradiates on the yarns in a full spectrum, and further irradiates on the radiation cooling particles 22 in the radiation cooling layer 2, the radiation cooling particles 22 can reflect part of light rays B in the sunlight, the light rays B include visible light and infrared light, and the heat C is transmitted through the atmospheric layer 201 in a wave band of 8 μm to 13 μm in an infrared radiation manner to achieve the cooling effect of the fabric.
In the present application, the radiant cooling particles 22 include particles that are capable of reflecting sunlight and emitting heat through an atmospheric window in an infrared radiation manner resulting in cooling. In some embodiments, the radiant cooling particles 22 may specifically include one or more of silicon dioxide, silicon carbide, titanium dioxide, calcium carbonate, barium sulfate, silicon nitride, zinc oxide, aluminum oxide, iron oxide, zirconium dioxide, and jade powder. In some embodiments, the radiant cooling particles 22 can be a mixture of two or more of silicon dioxide, silicon carbide, titanium dioxide, calcium carbonate, barium sulfate, silicon nitride, zinc oxide, aluminum oxide, iron oxide, zirconium dioxide, and jade powder. In the application, the radiation cooling particles 22 are uniformly dispersed in the polyurethane matrix 21, and the uniform dispersion of the radiation cooling particles 22 can make the radiation cooling effect of the fiber 10 more uniform, so that the radiation cooling effect of the fiber product is more uniform and stable; in addition, the more uniformly the radiation cooling particles 22 are dispersed, the smoother the surface of the radiation cooling layer is, and further, the smoother the surface of the fiber 10 is, thereby being beneficial to improving the reflectivity of sunlight and ensuring the better cooling effect of the fabric.
In the embodiment of the application, the size of the radiation cooling particles 22 has certain influence on the radiation cooling effect generated by the radiation cooling particles, the particle size of the radiation cooling particles 22 is controlled in a proper range, so that the radiation cooling layer is smoother, the improvement on the reflection capability of sunlight is facilitated, the reflection capability of infrared light in a wave band of 8-13 mu m in the sunlight is improved, and the radiation cooling layer can exert a better radiation cooling effect. In the embodiment of the present application, the particle size of the radiant cooling particles 22 may be controlled to be 0.2 μm to 4 μm, and specifically may be 0.2 μm, 0.5 μm, 1 μm, 2 μm, 3 μm, 4 μm, and the like. The specific shape of the radiant cooling particles 22 is not limited, and can be, for example, spherical, ellipsoidal, rod-like, etc.
In the present application, the content of the radiation cooling particles 22 per unit area of the radiation cooling layer 2 may also affect the radiation cooling effect to a certain extent. On the one hand, the low content of the radiation cooling particles can reduce the reflection capability of the radiation cooling layer 2 to sunlight (including visible light, infrared light and the like), and further cause the radiation cooling effect of the fabric to be unsatisfactory; on the other hand, the radiation cooling particles are difficult to be embedded into the fiber body due to insufficient content, so that the radiation cooling performance stability of the fiber is weakened, and the service life is difficult to be prolonged. In order to enable the radiation cooling layer to exert a good radiation cooling effect and improve the stability of the radiation cooling performance of the fiber, the radiation cooling particles 22 are added to the radiation cooling layer 2 in unit area as sufficient as possible in the embodiment of the present application. However, since the amount of visible light, infrared light, and the like reflected by the radiation cooling particles 22 per unit area is limited, the excessive addition of the radiation cooling particles may reduce the effective utilization rate of the radiation cooling particles, thereby causing waste of the radiation cooling particles and increase of the fabric manufacturing cost. In addition, the excessive addition of the radiation cooling particles may increase the dispersion difficulty of the radiation cooling particles in polyurethane, and agglomeration is easy to occur, thereby affecting the air permeability and moisture permeability of the fiber.
In the embodiment of the present application, the content of the radiant cooling particles 22 in each square meter of the radiant cooling layer 2 is optionally controlled to be 2g to 60g, and specifically, the content of the radiant cooling particles 22 in each square meter of the radiant cooling layer 2 may be controlled to be 2g, 5g, 10g, 15g, 20g, 25g, 30g, 35g, 40g, 45g, 50g, 55g, 60g, and the like. The control of the radiation cooling particles on the unit area in the proper range is beneficial to the fibers to obtain better radiation cooling performance, the effective utilization rate of the radiation cooling particles is improved, the radiation cooling layer can also have more microporous structures to keep the air and moisture permeability of the fibers, and the structural stability of the fibers is enhanced, so that the fiber products can obtain better comprehensive performance in the aspects of radiation cooling, air and moisture permeability, structural stability and the like. In the radiation cooling layer with the content of the radiation cooling particles in each square meter of the radiation cooling layer in the range, the volume ratio of the radiation cooling particles is 1-40%, and specifically can be 1%, 2%, 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, and the like.
In the embodiment of the present application, the content of the above-mentioned radiant cooling particles may also affect the thickness of the finally formed radiant cooling layer. Specifically, the lower the content of the radiation cooling particles, the smaller the viscosity of the soaking liquid, and the thinner the thickness of the finally formed radiation cooling layer, whereas the higher the content of the radiation cooling particles, the larger the viscosity of the soaking liquid, and the thicker the thickness of the finally formed radiation cooling layer. In embodiments of the present application, the thickness of the radiation cooling layer is less than or equal to the diameter of the fiber body. In some embodiments of the present application, the ratio of the thickness of the radiant cooling layer to the radius of the fiber body is 1: (1-5), and the ratio can be 1.
In this application embodiment, the thickness on radiation cooling layer can exert an influence to fibrous radiation cooling effect and ventilative moisture permeability, specifically, the thickness on radiation cooling layer is too thin probably leads to the radiation cooling effect not good because radiation cooling granule is not enough, and the thickness on radiation cooling layer is too thick probably leads to fibrous diameter too big, is unfavorable for the fibre winding to form the yarn, and can cause the surface fabric compliance that is woven by the yarn to descend, and the comfort level of taking reduces. In the embodiment of the present application, the thickness of the radiation cooling layer is controlled to be 2 μm to 40 μm, and specifically, may be 2 μm, 5 μm, 10 μm, 15 μm, 20 μm, 25 μm, 30 μm, 35 μm, 40 μm, or the like. The fiber with the thickness in the range of the radiation cooling layer can obtain better radiation cooling effect, and the yarn, the fabric and the clothes made of the fiber have better softness.
In the embodiments of the present application, the fiber product includes, but is not limited to, a yarn formed by winding a fiber, a fabric formed by weaving a yarn, and a garment formed by sewing a fabric. In the embodiment of the present application, the outer surface of the yarn 100 formed by combining at least two fibers 10 is an even radiation cooling layer, and the yarn 100 has a large specific surface area, which is beneficial to reflecting more sunlight, so as to exert a better radiation cooling effect. In addition, each radiation cooling fiber 10 has a complete radiation cooling layer structure, and can independently play a role in radiation cooling without being influenced by other doubled fibers, as shown in fig. 6, under the condition that the fiber 10a on the surface of the yarn 100 is damaged due to external factors such as abrasion or snagging, the fiber 10b inside the yarn 100 is exposed to form a new outer surface, and the radiation cooling function can be continuously played, so that the radiation cooling effect of the yarn 100 is prevented from being obviously reduced, and the radiation cooling fiber is beneficial to obtaining stronger stability and longer service life in the role of radiation cooling.
The above-mentioned yarn that this application embodiment provided has better radiation cooling effect, ventilative moisture permeability and longer life.
Referring to fig. 7, an embodiment of the present application further provides a radiation cooling fabric 200, which includes the radiation cooling yarn 100 provided in the present application, and the radiation cooling fabric 200 can be specifically woven by the radiation cooling yarn 100 in a weaving or knitting manner, and has a better radiation cooling effect and air and moisture permeability.
In this application embodiment, because every strand of yarn all is formed by the fibre doubling that has complete radiation cooling layer structure, the radiation cooling effect of surface fabric is difficult for appearing obviously reducing under the destroyed condition of surface fabric because of wearing and tearing or colluding external factors such as silk, and the radiation cooling performance stability of surface fabric is stronger promptly, can keep long-term radiation cooling effect better.
In addition, the radiation cooling fabric can form a good air-permeable channel A through weaving of the yarns, and because the yarns have the radiation cooling effect, the surface of the fabric does not need to be provided with a radiation cooling coating layer, and air molecules and gaseous water molecules in the air easily penetrate through the fabric through the air-permeable channel A, so that the fabric has good air permeability and moisture permeability.
Referring to fig. 8, the present application also provides a garment 300 comprising the radiation cooling yarn described above. The garment has good radiation cooling effect and air and moisture permeability, and can improve the wearing experience of a human body to a greater extent.
To highlight the beneficial effects of the present application, the following examples and comparative examples were set up:
example 1
Adopt this application radiation cooling yarn to weave into radiation cooling surface fabric, the surface fabric no longer sets up the coating. The radiation cooling fiber forming the radiation cooling yarn comprises a fiber body with the diameter of 60 mu m and a radiation cooling layer coated on the surface of the fiber body and with the thickness of 10 mu m-15 mu m, wherein the radiation cooling layer comprises porous polyurethane and radiation cooling particles embedded in the porous polyurethane, and the volume of the radiation cooling particles in the radiation cooling layer accounts for about 15 percent.
Comparative example 1
The difference from the example 1 is that the fabric is woven by using the conventional yarn. The conventional yarn consisted of the fiber body of the radiant cooling fibers in the radiant cooling yarn of example 1.
Comparative example 2
The difference from the embodiment 1 is that the fabric is woven by conventional yarns, the surface of the fabric is provided with a radiation cooling coating layer, and the composition structure of the radiation cooling coating layer is consistent with that of the radiation cooling layer on the surface of the radiation cooling fiber in the radiation cooling yarn in the embodiment 1.
The fabrics in example 1 and comparative examples 1-2 were tested for cooling performance and air and moisture permeability, and the test results are shown in table 1 below.
The detection conditions of the cooling performance and the air and moisture permeability are as follows: the ambient temperature is 303.15K, and the convection heat release coefficient is 10W/m 2 * K, atmospheric mass AM1.5, atmospheric pressure 100Pa.
TABLE 1 test results of cooling performance, air permeability and moisture permeability of fabrics
As can be seen from the results in Table 1, compared with comparative example 1 and comparative example 2, the fabric in the embodiment 1 of the application is woven by the radiation cooling yarn, so that the better radiation cooling effect and the better air and moisture permeability are obtained.
The fabric in the comparative example 1 is woven by conventional yarns, and a good radiation cooling effect is difficult to obtain. The fabric in comparative example 2 is woven by using conventional yarns, and the surface of the fabric is further provided with the radiation cooling coating layer, so that the radiation cooling effect of the fabric in comparative example 2 is improved compared with that in comparative example 1, but the radiation cooling coating layer has a certain blocking effect on the permeation of air molecules and water molecules in the air in the fabric, and the air permeability and moisture permeability of the fabric are lower than those in example 1.
Compared with the example 1, the radiation cooling effect and the air permeability and moisture permeability of the comparative example 2 are poorer, because the surface area of the radiation cooling layer in the comparative example 2 is smaller than that of the radiation cooling layer in the example 1 on the fabric with the same area, so that the radiation cooling capacity of the radiation cooling layer in the comparative example 2 is poorer; in addition, the radiation cooling coating layer in the comparative example 2 has a certain barrier effect on the permeation of air molecules and water molecules in the air in the fabric, so that the fabric in the comparative example 2 is poor in air permeability and moisture permeability.
Claims (5)
1. The radiation cooling yarn is characterized by comprising at least two parallel strands of radiation cooling fibers, wherein each radiation cooling fiber is composed of a fiber body and a radiation cooling layer coated on the surface of the fiber body, the radiation cooling layer is provided with a micropore structure, the micropore structure is used for enabling air molecules and gaseous water molecules in air to penetrate through the radiation cooling layer, the pore diameter of each micropore is 0.01-15 mu m, the thickness of the radiation cooling layer is 10-40 mu m, and the thickness of the radiation cooling layer is smaller than or equal to the diameter of the fiber body.
2. The radiation-cooled yarn of claim 1, wherein the fiber body has a diameter of 10 μm to 2mm.
3. The radiant cooling yarn of claim 1, wherein the ratio of the thickness of the radiant cooling layer to the radius of the fiber body is 1: (1-5).
4. A radiation cooling fabric, characterized in that the radiation cooling fabric comprises the radiation cooling yarn according to any one of claims 1 to 3.
5. A garment, characterized in that the garment comprises a radiant cooling yarn according to any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202123121431.8U CN217997460U (en) | 2021-12-13 | 2021-12-13 | Radiation cooling yarn, radiation cooling fabric and garment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123121431.8U CN217997460U (en) | 2021-12-13 | 2021-12-13 | Radiation cooling yarn, radiation cooling fabric and garment |
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| CN217997460U true CN217997460U (en) | 2022-12-09 |
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| CN202123121431.8U Active CN217997460U (en) | 2021-12-13 | 2021-12-13 | Radiation cooling yarn, radiation cooling fabric and garment |
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