CN217495483U - Breathable cooling woven fabric and garment - Google Patents
Breathable cooling woven fabric and garment Download PDFInfo
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- CN217495483U CN217495483U CN202122911328.7U CN202122911328U CN217495483U CN 217495483 U CN217495483 U CN 217495483U CN 202122911328 U CN202122911328 U CN 202122911328U CN 217495483 U CN217495483 U CN 217495483U
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Abstract
The application provides a ventilative cooling machine fabric and clothing, ventilative cooling machine fabric includes the woven fabric body, sets up ventilative layer on the woven fabric body, sets up radiation cooling layer on ventilative layer and sets up the polyurethane enhancement layer on radiation cooling layer. The breathable cooling woven fabric has good radiation cooling effect, air and moisture permeability and waterproof performance, is good in wearability, and can meet higher requirements of people for clothing.
Description
Technical Field
The application relates to the field of garment fabric preparation, in particular to a breathable cooling woven fabric and garment.
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, the application provides a breathable cooling woven fabric, the breathable cooling woven fabric has a laminated structure of woven fabric body/breathable layer/radiation cooling layer/polyurethane enhancement layer, can have better radiation cooling effect and ventilative moisture permeability concurrently, can satisfy people's higher clothes demand.
In a first aspect, the application provides a breathable cooling woven fabric, the breathable cooling woven fabric comprises a woven fabric body, a breathable layer arranged on the woven fabric body, a radiation cooling layer arranged on the breathable layer and a polyurethane enhancement layer arranged on the radiation cooling layer.
In the embodiment of the application, the radiation cooling layer comprises a resin matrix and radiation cooling particles embedded in the resin matrix.
In an embodiment of the present application, the polyurethane reinforcing layer includes a polyurethane matrix and reinforcing particles embedded in the polyurethane matrix.
In an embodiment of the present application, the hardness of the polyurethane reinforcing layer is greater than the hardness of the radiation cooling layer.
In the embodiment of the application, the particle size of the radiation cooling particles is 0.2-4 μm; 2g-60g of the radiation cooling particles are embedded in each square meter of the radiation cooling layer.
In an embodiment of the present application, the reinforcing particles have a particle size of 20nm to 60 nm.
In an embodiment of the present application, the air-permeable layer is a porous resin layer, and the porous pore diameter of the porous resin layer is 0.01 μm to 15 μm.
In the embodiment of the application, the radiation cooling layer has a micropore structure, and the pore diameter of the micropore is 0.01-15 μm.
In the embodiment of the application, the polyurethane reinforcing layer has a porous structure, and the pore diameter of the porous structure is 0.01-15 μm.
In the embodiments of the present application, the thickness of the air-permeable layer is 0.1 μm to 20 μm; the thickness of the radiation cooling layer is 2-40 μm; the thickness of the polyurethane reinforced layer is 0.1-40 μm; the total thickness of the air-permeable layer, the radiation cooling layer and the polyurethane reinforcing layer is 2.2-100 mu m.
In the embodiment of the application, the air permeability value of the air-permeable cooling woven fabric is greater than or equal to 1.5 mm/s.
In the embodiment of the application, the total solar energy blocking rate of the breathable cooling woven fabric is greater than or equal to 85%.
The air-permeable cooling woven fabric provided by the application has the functions of good radiation cooling and air and moisture permeability, and has better wearability.
The application also provides a garment comprising the breathable cooling woven fabric of the first aspect of the application.
Drawings
FIG. 1 is a schematic structural diagram of an air-permeable cooling woven fabric in an embodiment of the present application;
FIG. 2 is a schematic view of the principle of radiation cooling of the breathable cooling woven fabric in the embodiment of the present application;
fig. 3 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 clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, the present application provides a breathable cooling woven fabric 100, which includes a woven fabric body 10, a breathable layer 20 disposed on the woven fabric body 10, a radiation cooling layer 30 disposed on the breathable layer 20, and a polyurethane reinforcing layer 40 disposed on the radiation cooling layer 30. In practical use, one side of the woven fabric body 10 of the breathable cooling woven fabric 100 is close to a human body and is the inner side of the fabric, and one side of the polyurethane reinforcing layer 40 is exposed in the environment and is the outer side of the fabric.
The breathable cooling woven fabric 100 provided by the embodiment of the application has a laminated structure of a woven fabric body, a breathable layer, a radiation cooling layer and a polyurethane reinforcing layer, and the laminated structure can enable the fabric to obtain a good radiation cooling effect and a good breathable moisture-permeable performance, so that the wearability of the fabric is improved, and the wearing experience of people is improved. The radiation cooling layer 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 breathable cooling woven fabric has a good radiation cooling effect.
In the present embodiment, the woven fabric main body 10 is a fabric in which yarns are vertically woven in both the warp and weft directions, and the longitudinal yarns are warp yarns and the transverse yarns are weft yarns. The woven fabric body 10 may include, but is not limited to, cotton cloth, hemp cloth, silk, chemical fiber cloth, and blended cloth. In some embodiments of the present application, the woven fabric body 10 may be nylon, spring, polyester, etc.
In the embodiment of the present application, the radiation cooling layer 30 includes a resin matrix 31 and radiation cooling particles 32 embedded in the resin matrix 31, and the radiation cooling particles 32 are uniformly distributed in the resin matrix 31. The radiation cooling layer 30 is disposed on the woven fabric body 10 and between the air-permeable layer 20 and the polyurethane reinforcing layer 40.
In the present embodiment, the radiation cooling layer 30 has a microporous structure, that is, the resin matrix 31 has a microporous structure, and the radiation cooling particles 32 are uniformly dispersed in the microporous resin matrix 31. The pore diameter of the micropores of the radiation cooling layer 30 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 micropores in the radiation cooling layer 30 may be about 15 hundred million micropores per square centimeter of the radiation cooling layer. The air permeability and the moisture permeability of the fabric can be better improved by the proper pore size range and the proper number of micropores.
In the embodiment of the present application, the resin matrix 31 may be a polyurethane matrix or another kind of porous resin matrix. In the present application, the resin matrix 31 not only serves as a dispersion carrier for the radiation cooling particles 32, but also provides a ventilation channel to ensure that the radiation cooling layer 30 has good ventilation and moisture permeability. The resin matrix is used as a dispersing carrier of the radiation cooling particles, so that the structure of the cured radiation cooling layer can be more stable, the fabric can be kept in a more stable radiation cooling effect, and the resin matrix can be well combined with the breathable layer; in addition, the resin 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 fabric, so that the fabric is favorable for having radiation cooling effect and good air permeability and moisture permeability.
In the embodiment of the present application, the radiation cooling particles 32 mainly play a role in radiation cooling in the radiation cooling layer 30, 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. 2, sunlight a irradiates the fabric with a full spectrum, the sunlight a penetrates through the polyurethane enhancement layer 40 to reach the radiation cooling layer 30, and further irradiates the radiation cooling particles 32 in the radiation cooling layer 30, the radiation cooling particles 32 can reflect part of rays B in the sunlight, the rays B include visible light and infrared light, and the heat C is emitted through an atmospheric window with a wave band of 8 μm to 13 μm to reach the cooling effect of the fabric by means of infrared radiation through the atmospheric layer 201.
In the present application, the radiant cooling particles 32 comprise 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 32 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 32 may include 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 32 are uniformly dispersed in the resin matrix 31, and the radiation cooling effect of the fabric can be more uniform due to the uniform dispersion of the radiation cooling particles 32, so that the wearing experience of a human body is improved; in addition, the more uniformly the radiation cooling particles 32 are dispersed, the smoother the surface of the radiation cooling layer is, and the smoother the surface of the fabric is, so that the improvement of the reflectivity to sunlight is facilitated, and the cooling effect of the fabric is better.
In the embodiment of the application, the size of the radiation cooling particles 32 has certain influence on the radiation cooling effect generated by the radiation cooling particles, the particle size of the radiation cooling particles 32 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 diameter of the radiant cooling particles 32 can be controlled to be 0.2 μm to 4 μm, and specifically, can 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 32 is not limited, and can be, for example, spherical, ellipsoidal, rod-like, and the like. In addition, the size of the radiation cooling particles 32 also has a certain influence on the air permeability of the fabric, and in the embodiment of the present application, the particle size of the radiation cooling particles can be adjusted within the particle size range of the radiation cooling particles according to the structural characteristics of the fabric selected by the woven fabric body 10, specifically, the more loose the fabric structure selected by the woven fabric body is, the more large the particle size of the radiation cooling particles can be selected; on the contrary, the more compact the fabric structure of the woven fabric body, the smaller the particle size of the radiation cooling particles can be selected.
In this application, the radiation cooling particle content in the unit area of the radiation cooling layer 30 can also influence the radiation cooling effect to a certain extent. Too low content of the radiation cooling particles may reduce the reflection capability of the radiation cooling layer 30 to sunlight (including visible light, infrared light, and the like), and further cause the radiation cooling effect of the fabric to be unsatisfactory. In order to make the radiant cooling layer exert a good radiant cooling effect, the radiant cooling particles 32 are added to the radiant cooling layer 30 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 32 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 can also have adverse effects on the comprehensive performance of the fabric, on one hand, the excessive content of the radiation cooling particles in unit area can reduce the combination degree of the radiation cooling layer 30, the breathable layer 20 and the polyurethane reinforcing layer 40 positioned on the two sides of the radiation cooling layer, so that the structural stability of the fabric is poor, the fabric is easy to break in the using process, and the service life of the fabric is further influenced; on the other hand, the too large addition amount of the radiation cooling particles in unit area may increase the dispersion difficulty of the radiation cooling particles in polyurethane, and agglomeration is easy to occur, thereby affecting the air and moisture permeability of the radiation cooling layer. In the embodiment of the present application, optionally, the content of the radiation cooling particles in each square meter of the radiation cooling layer 30 is controlled to be 2g to 60g, and specifically, the content of the radiation cooling particles in each square meter of the radiation cooling layer 30 may be controlled to be 2g, 5g, 10g, 15g, 20g, 25g, 30g, 35g, 40g, 45g, 50g, 55g, 60g, and the like. The radiation cooling particles on the unit area are controlled in the proper range, so that the fabric can obtain better radiation cooling performance, the effective utilization rate of the radiation cooling particles is improved, the radiation cooling layer can have more microporous structures to keep the air permeability of the fabric, the structural stability of the fabric is enhanced, and the fabric can obtain better comprehensive performance in the aspects of radiation cooling, air permeability, moisture permeability, structural stability and the like.
It should be noted that, in specific applications, because the loose degree and the raw material characteristics of different woven fabric bodies are different, and the content requirements of different fabrics on the radiation cooling particles in unit area are also different, the specific addition amount of the radiation cooling particles in unit area can be adjusted in the above range according to the specifically selected fabric.
In the application, the woven fabric is formed by interweaving the warps and the wefts, and the yarns in the fabric are arranged tightly, so that the elasticity of the woven fabric is small, and the size of the air holes formed in the woven fabric is small. Because the size of the air holes of the woven fabric is small, the raw materials of the radiation cooling layer are directly coated on the woven fabric body, so that the raw materials of the radiation cooling layer easily fall into the air holes of the woven fabric body, the air holes are blocked, the air permeability of the fabric is influenced, and the wearability of the fabric is further influenced. And this application sets up one deck ventilative layer 20 through between woven cloth body 10 and radiation cooling layer 30, can make radiation cooling layer material not directly coat on woven cloth body 10 to be favorable to avoiding the radiation cooling granule in the radiation cooling layer raw materials to drop and cause the bleeder vent to block up in the bleeder vent of woven cloth body, influence the ventilative moisture permeability of surface fabric.
In the present embodiment, the air permeable layer 20 has a microporous structure, which is beneficial to obtain more stable air and moisture permeability of the fabric. In some embodiments, the gas-permeable layer 20 is a porous resin layer having a porous pore size of 0.01 μm to 15 μm. In specific embodiments, the porous pore size in the gas permeable layer may be 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, and the like. In embodiments of the present application, the density of the micropores in the air-permeable layer 20 may be about 15 hundred million micropores per square centimeter of the air-permeable layer. In some embodiments of the present application, the breathable layer 20 may be a polyurethane layer having a microporous structure. Because the polyurethane in the breathable layer can obtain a stable structure after being cured, and the micropores on the polyurethane can also keep better stability, a more stable breathable and moisture-permeable channel is favorably provided for the fabric, and the breathable and moisture-permeable performance of the fabric is ensured to be not easy to weaken along with the increase of the service time of the fabric.
In the embodiment of the present application, a polyurethane reinforcing layer 40 is disposed on a side of the radiation cooling layer 30 away from the woven fabric body 10, and the polyurethane reinforcing layer 40 includes a polyurethane matrix 41 and reinforcing particles 42 embedded in the polyurethane matrix 41. The polyurethane reinforcing layer 40 has a porous structure. The addition of the reinforcing particles 42 in the polyurethane reinforcing layer 40 is beneficial to ensuring that the fabric achieves better air permeability and moisture permeability. Specifically, because the calendering treatment is needed to be carried out on the outermost layer in the preparation process of the fabric, the calendering treatment is heat treatment, and the process easily causes that the microporous structure of the outermost layer is damaged to influence the air permeability and moisture permeability of the fabric; on the other hand, because the polyurethane enhancement layer 40 is a transparent or translucent layer, sunlight can reach the radiation cooling layer 30 through the polyurethane enhancement layer 40, and therefore the arrangement of the polyurethane enhancement layer 40 is not easy to cause adverse effects on the radiation cooling function of the radiation cooling layer 30, so that the fabric can obtain a good radiation cooling effect, and meanwhile, the good air permeability and moisture permeability can be ensured, and the wearability of the fabric can be better improved. In addition, the polyurethane reinforcing layer 40 arranged on the outermost layer of the fabric can also prevent the radiation cooling layer 30 from being damaged due to external factors such as abrasion in the use process of the fabric to influence the radiation cooling function of the radiation cooling layer 30, so that the radiation cooling layer 30 is protected to a certain extent. And because the polyurethane enhancement layer 40 after the calendaring treatment has a smoother surface, the arrangement of the polyurethane enhancement layer is not only beneficial to improving the reflectivity to sunlight and enabling the fabric to obtain a better cooling effect, but also beneficial to enabling the fabric to obtain a certain waterproof effect and a better appearance, and has a better hand feeling.
In the present embodiment, the reinforcing particles 42 may be high-hardness particles including silica particles. The particle size of the reinforcing particles 42 is 20nm to 60 nm. Specifically, the particle size of the reinforcing particles 42 may be 20nm, 30nm, 40nm, 50nm, 60 nm.
In the embodiment of the present application, in order to better enable the polyurethane reinforcing layer 40 to have a structure that maintains the microcellular structure during the calendering process, the hardness of the polyurethane reinforcing layer 40 is controlled to be greater than that of the radiant cooling layer 30. Specifically, the hardness of the polyurethane reinforcing layer 40 can be adjusted according to the requirement of the pressure-resistant photo-processing, and the polyurethane reinforcing layer 40 can keep a porous structure during the pressure-resistant photo-processing, i.e., the photo-processing, so that the polyurethane reinforcing layer has good air permeability. In some embodiments, the hardness of the polyurethane reinforcing layer 40 may be 1 or more times greater than the hardness of the radiant cooling layer 30.
In the embodiment of the present application, the porous pore size of the polyurethane reinforcing layer 40 may be 0.01 μm to 15 μm. In a specific embodiment, the porous pore size of the polyurethane reinforcing layer 40 may be 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 example, the polyurethane reinforcing layer 40 contains about 15 hundred million cells per square centimeter.
In the present embodiment, the air permeability of the fabric refers to the air permeability of the fabric when a pressure difference exists between both sides of the fabric, that is, the volume of air flowing through the fabric per unit area per unit time at a predetermined pressure difference between both sides of the fabric. Because the size and the density of the micropores can influence the volume of air flowing through the unit area of the fabric in unit time, the size and the density of the micropores are controlled in a proper range, so that the fabric can obtain better air permeability. In the embodiment of the application, the breathable layer, the radiation cooling layer and the polyurethane enhancement layer on the breathable channel of the fabric are all provided with microporous structures, and the aperture of each micropore is controlled to be 0.01-15 mu m, so that the aperture is far larger than the diameter of air molecules by 0.3-0.4 nm, and therefore the air molecules can penetrate through the micropores more easily, and the breathable speed is higher. In addition, as the diameter of the gaseous water molecule in the air is 0.4nm, the diameter of the gaseous water molecule is also far smaller than the pore diameter of the micropores in the embodiment of the application, the air holes which can allow the air molecules to penetrate through can also allow the gaseous water molecule in the air to penetrate through, that is, the air-permeable layer with the micropore structure in the application can simultaneously have the functions of air permeability and moisture permeability. In the embodiment of the present application, the pore diameters of the pores of the air-permeable layer, the radiation cooling layer and the polyurethane reinforcing layer may be substantially the same or different. In one embodiment of the application, the sizes of the micropores of the breathable layer, the radiation cooling layer and the polyurethane reinforcing layer are similar, so that the breathable and moisture-permeable functions of the fabric can be realized. In another embodiment of the application, in consideration of the fact that the volume of gas is increased due to the fact that hot gas emitted by a human body in a high-temperature environment is likely to be cooled and tends to be liquefied in the process that the hot gas penetrates through the breathable layer, the radiation cooling layer and the polyurethane enhancement layer, the sizes of the micropores of the breathable layer, the radiation cooling layer and the polyurethane enhancement layer are sequentially increased, and the breathable and moisture-permeable performance of the fabric is favorably realized.
In this application embodiment, according to the different application demands of ventilative cooling woven fabric, also have different requirements to the thickness of each coat of surface fabric and the gross thickness of coat, the thickness of each coat and the gross thickness of coat are too big or the undersize all can influence the cooperation between each coat, and then influence the radiation cooling effect and the ventilative moisture permeability of surface fabric. The thickness of this application embodiment through with each coating and the gross thickness control of coating in suitable within range, can guarantee that the surface fabric is carrying out under the condition of thickness adjustment according to actual demand, still can have better radiation cooling effect and ventilative moisture permeability. The thickness of the air-permeable layer 20 may be controlled to be 0.1 μm to 20 μm, and specifically may be 0.1 μm, 0.2 μm, 0.5 μm, 1 μm, 2 μm, 5 μm, 10 μm, 15 μm, 20 μm, or the like. The thickness of the radiation cooling layer 30 can be controlled to be 2 μm to 40 μm, and specifically, can be 2 μm, 5 μm, 10 μm, 15 μm, 20 μm, 25 μm, 30 μm, 35 μm, 40 μm, and the like. The thickness of the polyurethane reinforcing layer 40 may be controlled to be 0.1 μm to 40 μm, and specifically may be 0.1 μm, 0.2 μm, 0.5 μm, 1 μm, 2 μm, 5 μm, 10 μm, 15 μm, 20 μm, 25 μm, 30 μm, 35 μm, 40 μm, or the like. The total thickness of the coating layers may be controlled to be 2.2 μm to 100 μm, that is, the total thickness of the air-permeable layer 20, the radiation cooling layer 30 and the polyurethane reinforcing layer 40 may be controlled to be 2.2 μm to 100 μm, and specifically may be 2.2 μm, 3 μm, 5 μm, 10 μm, 20 μm, 40 μm, 50 μm, 70 μm, 80 μm, 100 μm, or the like.
The breathable cooling woven fabric 100 in the embodiment of the application has good breathable and moisture-permeable performances while exerting a good radiation cooling effect through the mutual cooperation between the woven fabric body 10, the breathable layer 20, the radiation cooling layer 30 and the polyurethane reinforcing layer 40.
Specifically, the cooperation of each layer in the structure of the air-permeable and temperature-lowering woven fabric 100 shows that the woven fabric body, the air-permeable layer, the radiation temperature-lowering layer and the polyurethane reinforcing layer all have proper microporous structures, and due to the unique structure of the air-permeable and temperature-lowering woven fabric, the air-permeable and temperature-lowering woven fabric has inner and outer sides, one side of the woven fabric body is the inner side of the air-permeable and temperature-lowering woven fabric, one side of the polyurethane reinforcing layer is the outer side of the air-permeable and temperature-lowering woven fabric, and air molecules and gaseous water molecules in the air can flow from the inner side to the outer side of the fabric in the direction perpendicular to the thickness of the fabric, so that the air-permeable and temperature-lowering woven fabric achieves the air-permeable and temperature-lowering effect. The breathable cooling woven fabric can be used as a garment fabric, the inner side of the fabric is the side contacting with a human body, the outer side of the fabric is the side deviating from the human body, and under a high-temperature environment, the fabric can achieve good radiation cooling, ventilation and perspiration functions, so that stuffiness and sense of touch of a user can be reduced, and good garment performance is shown. In addition, due to the specific laminated structure of the radiation cooling fabric, moisture is difficult to reversely penetrate through the fabric, namely the moisture is difficult to flow from the outer side of the fabric to the inner side of the fabric,therefore, the waterproof effect can be achieved. In the embodiment of the application, the air permeability value of the air permeable cooling woven fabric is greater than or equal to 1.5 mm/s. In some embodiments, the air permeability value of the air permeable, temperature reducing woven fabric is greater than or equal to 1.6 mm/s. In some embodiments, the air permeability value of the air permeable cooling woven fabric is greater than or equal to 1.7 mm/s. In some embodiments, the air permeability value of the air permeable cooling woven fabric is greater than or equal to 1.8 mm/s. In the embodiment of the application, the moisture permeability value of the breathable cooling woven fabric is more than or equal to 15000 g/(m) 2 *24h)。
In this application, each layer in ventilative cooling machine fabric 100 is in the specific main cooperation that plays radiation cooling effect shows the ventilative layer in the coating, can make the coating obtain more stable structure after the polyurethane solidification in radiation cooling layer and the polyurethane enhancement layer, thereby the homodisperse state of radiation cooling granule in polyurethane also can obtain better stability, be favorable to making the stable radiation cooling effect that plays of radiation cooling granule, and the radiation cooling granule that is in stable structure is difficult for taking place to drop or caking and leads to the radiation cooling effect of radiation cooling granule to reduce or become invalid, be favorable to improving the effective utilization ratio of radiation cooling granule. In addition, the polyurethane enhancement layer that sets up and keep away from woven cloth body one side on the radiation cooling layer can make the structure of coating more stable except can making after the solidification, can also prevent that radiation cooling layer from causing the destruction and influencing its radiation cooling function because of external factors such as wearing and tearing in the surface fabric use to can make the surface fabric have certain waterproof effect, thereby play the effect to radiation cooling layer further protection, be favorable to improving the effective life on radiation cooling layer. This application ventilative cooling machine weaves surface fabric can exert better radiation cooling effect under stronger sunshine shines, in the embodiment of this application, under 303.15K's ambient temperature, ventilative cooling machine weaves surface fabric's the total separation rate of solar energy is more than or equal to 85%, specifically can be 85%, 86%, 87%, 88%, 89%, 90% etc.. Namely, the solar energy transmission ratio of the breathable cooling woven fabric is less than or equal to 15 percent. The total solar blocking ratio refers to the ratio of the blocked solar energy (mainly visible light, infrared light and ultraviolet light) to the total solar energy irradiated on the surface of an object. In the embodiment of the application, the sunlight reflectance of the breathable cooling woven fabric 100 is greater than or equal to 75%; the visible light reflectance is greater than or equal to 80%; the infrared reflectance is 75% or more. In some embodiments, the solar reflectance of the breathable cooling woven fabric 100 is greater than or equal to 80%; the visible light reflectance is 85% or more. The breathable cooling woven fabric can realize temperature reduction through thermal isolation, and the effect of radiation cooling is achieved. In the embodiment of the application, the surface temperature of the breathable cooling woven fabric can be reduced by 3-10 ℃ by irradiating for more than 15min at a high temperature of 30-40 ℃, and specifically can be reduced by 3 ℃, 4 ℃, 5 ℃, 6 ℃, 7 ℃, 8 ℃, 9 ℃, 10 ℃ and the like.
The breathable cooling woven fabric provided by the embodiment of the application can have good radiation cooling effect, air and moisture permeability and waterproof performance, has good wearability, and can meet the higher requirement of people on clothing.
The embodiment of the application also provides a preparation method of the breathable cooling woven fabric, which comprises the following steps:
(1) coating a breathable layer material on the woven fabric body, and curing to obtain a breathable layer;
(2) coating a radiation cooling layer material on the breathable layer, and curing to obtain a radiation cooling layer;
(3) and coating a polyurethane reinforcing layer material on the radiation cooling layer, and curing and calendering to obtain the breathable cooling woven fabric.
The curing process can be realized by drying, and the drying temperature can be 40-60 ℃. The calendering treatment is the post treatment of the fabric, the calendering treatment can make the surface of the fabric smoother and the whole fabric denser, and the temperature in the calendering treatment process can be controlled to be 50-160 ℃.
In the embodiment of the application, woven fabric is selected as the fabric of the woven fabric body, and the breathable layer, the radiation cooling layer and the polyurethane enhancement layer are sequentially coated on the woven fabric body in a laminating manner. In some embodiments of the present application, the porous resin material is coated on the woven fabric body, and is dried and cured to form the air permeable layer with the microporous structure. In some embodiments, the porous resin material may be a polyurethane material.
In the embodiment of the application, the radiation cooling particles are uniformly dispersed in the resin matrix raw material capable of forming the microporous structure to obtain a radiation cooling layer material, and the radiation cooling layer material is coated on the cured breathable layer and is dried and cured to form the radiation cooling layer embedded with the uniformly dispersed radiation cooling particles. In some embodiments, the resin matrix material may be a polyurethane material.
In the embodiment of the application, the dispersion liquid containing the reinforcing particles is uniformly dispersed in the polyurethane raw material capable of forming the microporous structure to obtain the polyurethane reinforcing layer material, and then the polyurethane reinforcing layer material is coated on the cured radiation cooling layer and dried and cured to form the polyurethane reinforcing layer with the microporous structure. The dispersion liquid containing the reinforcing particles can be butyl acetate dispersion liquid containing the reinforcing particles, and the hardness of the polyurethane can be obviously improved by adding the dispersion liquid, so that the polyurethane reinforcing layer can resist the calendaring treatment.
In this application embodiment, strike off and dry the coating that solidification handled the back and carry out next layer again through each layer after to the coating, be favorable to obtaining the surface fabric that has better radiation cooling effect and ventilative moisture permeability. On one hand, the coated layers are scraped to ensure that the bonding degree among the layers is better, and the structural stability of the formed coating layer is higher, so that the problem that the effective service life of the fabric is influenced due to the falling off of the coating layer in the use process of the fabric is favorably solved; on the other hand, each layer can have a smoother surface, so that the fabric coated with the coating layer can also obtain a smoother surface. And each layer after to the coating dries the solidification and handles the coating that carries on next layer again and be favorable to preventing that each layer material from taking place to mix between layer and layer, forms the transition layer of mixing state, and this transition layer's constitution and structure are relatively unstable, probably exert an influence to mutually supporting between each layer, and then influence the radiation cooling effect and the ventilative moisture permeability of surface fabric. Specifically, the microporous structure of the transition layer relative to each layer may change, which affects the circulation of gas between layers, and further affects the air and moisture permeable functions of the fabric. The dispersion state of the transition layer relative to the radiation cooling particles of the radiation cooling layer may also change, which affects the effective utilization rate of the radiation cooling particles and further affects the radiation cooling effect of the fabric.
In this application embodiment, the coating thickness of each layer can be adjusted through the distance between the surface of waiting to coat of adjustment scraper blade and last layer, and for example the coating thickness on ventilative layer can be adjusted through the distance between the surface of waiting to coat of adjustment scraper blade and woven cloth body, and the coating thickness on radiation cooling layer can be adjusted through the distance between the surface of waiting to coat of adjustment scraper blade and ventilative layer.
The preparation method provided by the application is simple to operate and easy to realize.
Referring to fig. 3, the present application also provides a garment 200 comprising the breathable cooling woven fabric described above. Garment 200 has the structure of fabric 100. When the garment is worn, one side of the woven fabric body of the breathable cooling woven fabric is close to a human body, one side of the polyurethane enhancement layer is exposed in the environment, and the garment has good radiation cooling effect and breathable moisture-permeable performance, and can improve the wearing experience of the human body.
Embodiments of the present application are further illustrated below in the various examples.
Example 1
A preparation method of a breathable cooling woven fabric comprises the following steps:
(1) coating a breathable layer material on the woven fabric body, and drying and curing;
(2) coating a radiation cooling layer material on the breathable layer, and drying and curing; wherein, each square meter of radiation cooling layer contains 10g of radiation cooling particles;
(3) and coating a polyurethane reinforcing layer material on the radiation cooling layer, drying, curing and performing calendaring treatment to obtain the breathable cooling woven fabric with the laminated structure of the woven fabric body/the breathable layer/the radiation cooling layer/the polyurethane reinforcing layer.
Example 2
A method for preparing an air-permeable cooling woven fabric, which is different from the embodiment 1 only in that: in the step (2), each square meter of the radiation cooling layer contains 20g of radiation cooling particles.
Example 3
A method for preparing a breathable cooling woven fabric, which is different from the method in example 1 only in that: in the step (2), each square meter of radiation cooling layer contains 35g of radiation cooling particles.
Example 4
A method for preparing an air-permeable cooling woven fabric, which is different from the embodiment 1 only in that: in the step (2), 48g of radiation cooling particles are contained on each square meter of radiation cooling layer.
In order to highlight the beneficial effects of the application, the following comparative examples are arranged:
comparative example 1
The difference from example 1 is that: the woven fabric only comprises a woven fabric body.
Comparative example 2
The difference from example 1 is that: the woven fabric only comprises a woven fabric body and a radiation cooling layer, and does not comprise a breathable layer and a polyurethane reinforcing layer, and the woven fabric has a laminated structure of the woven fabric body/the radiation cooling layer.
Comparative example 3
The difference from example 1 is that: the woven fabric only comprises a woven fabric body, a breathable layer and a radiation cooling layer, and does not comprise a polyurethane enhancement layer, and the woven fabric has a laminated structure of the woven fabric body, the breathable layer and the radiation cooling layer.
Comparative example 4
The only difference from example 1 is: in the step (2), 1g of radiation cooling particles are contained on each square meter of radiation cooling layer.
Comparative example 5
The only difference from example 1 is: in the step (2), 65g of radiation cooling particles are contained on each square meter of radiation cooling layer.
In order to highlight the beneficial effects of the examples of the present application, the fabrics of examples 1 to 4 and comparative examples 1 to 5 were tested for cooling performance and air and moisture permeability, and the test results are shown in table 1 below.
Cooling and ventilationThe detection conditions of the moisture permeability are as follows: ambient temperature 303.15K, convective heat release coefficient 10W/m 2 K, atmospheric mass AM1.5, atmospheric pressure 100 Pa.
TABLE 1 test results of cooling performance, air permeability and moisture permeability of fabrics
As can be seen from the results in table 1, under the same sunlight irradiation conditions, the woven fabrics of examples 1 to 4 of the present application have a special laminated structure of woven fabric body/air permeable layer/radiation cooling layer/polyurethane reinforcing layer, so that the fabrics have a high solar reflectance, and the reflectance to visible light and infrared light in sunlight can also reach a high level, the total solar barrier rate can reach more than 88%, and the air permeability value and the moisture permeability value are also greatly improved, and can have good radiation cooling and air permeability and moisture permeability functions at the same time.
Compared with examples 1-4, comparative example 1 only includes a woven fabric body, and a good radiation cooling effect cannot be obtained due to the absence of the radiation cooling layer. The lack of the breathable layer and the polyurethane reinforcing layer in the comparative example 2 may cause the radiation cooling particles to fall into the breathable holes of the woven fabric body to cause the blockage of the breathable holes, and the radiation cooling layer as the outermost layer of the fabric may cause the destruction of the microporous structure of the radiation cooling layer after the calendaring treatment, which both cause the reduction of the breathable and moisture-permeable performance of the fabric. In comparative example 3, the polyurethane reinforcing layer is absent, that is, the radiation cooling layer is the outermost layer of the fabric, and the microporous structure may be damaged after the calendering treatment, so that the air permeability and the moisture permeability of the fabric are reduced.
Compared with examples 1-4, in comparative example 4, the radiation cooling particles contained in the radiation cooling layer per square meter are too few to fully reflect sunlight, so that the total solar energy blocking rate of the fabric is low, and the radiation cooling effect of the fabric is not ideal. In the comparative example 5, too many radiation cooling particles are contained on each square meter of radiation cooling layer, so that micropores in the radiation cooling layer are difficult to form good air-permeable channels, and the air and moisture permeability of the fabric is not ideal.
Claims (9)
1. The breathable cooling woven fabric is characterized by comprising a woven fabric body, a breathable layer arranged on the woven fabric body, a radiation cooling layer arranged on the breathable layer and a polyurethane reinforcing layer arranged on the radiation cooling layer.
2. The breathable cooling woven fabric of claim 1, wherein the polyurethane reinforcing layer has a hardness greater than the hardness of the radiant cooling layer.
3. The breathable and cooling woven fabric of claim 1, wherein the breathable layer is a porous resin layer, and the pore size of the pores of the porous resin layer is 0.01 μm to 15 μm.
4. The breathable cooling woven fabric of claim 1, wherein the radiant cooling layer has a microporous structure, and the pore size of the micropores is 0.01 μm to 15 μm.
5. The breathable cooling woven fabric of claim 1, wherein the polyurethane reinforcing layer has a porous structure, and the pore size of the pores is 0.01 μm to 15 μm.
6. The breathable cooling woven fabric of claim 1, wherein the thickness of the breathable layer is 0.1 μ ι η to 20 μ ι η; the thickness of the radiation cooling layer is 2-40 μm; the thickness of the polyurethane reinforced layer is 0.1-40 μm.
7. The breathable cooling woven fabric of claim 1, wherein the total thickness of the breathable layer, the radiant cooling layer and the polyurethane reinforcing layer is 2.2 μm to 100 μm.
8. The air-permeable cooling woven fabric of claim 1, wherein the air permeability value of the air-permeable cooling woven fabric is greater than or equal to 1.5 mm/s; the total solar energy blocking rate of the breathable cooling woven fabric is greater than or equal to 85%.
9. A garment comprising the breathable cooling woven fabric of any one of claims 1-8.
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| CN202122911328.7U CN217495483U (en) | 2021-11-23 | 2021-11-23 | Breathable cooling woven fabric and garment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122911328.7U CN217495483U (en) | 2021-11-23 | 2021-11-23 | Breathable cooling woven fabric and garment |
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Denomination of utility model: Breathable and cooling woven fabrics and clothing Granted publication date: 20220927 Pledgee: Shenzhen Rural Commercial Bank Co.,Ltd. Yanluo Sub branch Pledgor: Shenzhen Deep Space Refrigeration Technology Co.,Ltd. Registration number: Y2024980006742 |
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