Intelligent thermal radiation regulation and control superstructure fiber and preparation method and fabric thereof

Abstract

The invention provides an intelligent thermal radiation regulation and control superstructure fiber and a preparation method and fabric thereof. The intelligent thermal radiation regulation and control superstructure fiber comprises high-emission core layer yarn located on the inner layer and low-emission shell layer yarn located on the outer layer. The high-emission core layer yarn comprises one or more of high-emission polymer yarn and high-emission polymer-inorganic micro-nano particle composite yarn; the low-emission shell layer yarn comprises one or more of metal filaments, metal coating yarn and conductive solution coating yarn. The super-structure fiber comprises the high-emission core layer yarn located on the inner layer and the low-emission shell layer yarn located on the outer layer, the shell layer metal yarn has interval-dependent resonance coupling absorption, the core layer yarn and the shell layer yarn have completely opposite infrared radiation characteristics, and the high-performance dynamic radiation modulation rate can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of radiative heat regulation, and specifically, to an intelligent thermoradiative regulation superstructure fiber, a preparation method thereof, and a fabric. Background Art

[0002] Fabrics are an indispensable part of our lives and serve as the "second skin" for human thermoregulation. The design of the radiative properties of fabrics is of great significance in a wide range of application fields such as personal thermal management clothing, energy-saving buildings, infrared camouflage, and intelligent displays and communications. Radiative heat regulation fabrics can achieve energy-saving intelligent temperature control through the regulation of multi-band optical absorption, reflection, and transmission. Compared with high-energy-consuming devices such as air conditioners, radiative heat regulation fabrics can achieve local thermal management on the surface of target objects, greatly saving energy consumption, which is in line with the important development trend of the national dual-carbon policy.

[0003] In recent years, significant progress has been made in radiative cooling or radiative heating fabrics with single functions, but it is difficult for them to meet the thermal management requirements in different complex temperature environments. So far, only a small number of dynamic radiative heat regulation fabrics have been reported: in 2019, Wang et al. from the University of Maryland (Science 363, 619–623 (2019)) coated carbon nanotube materials on twin fibers, and their fabrics could achieve an infrared modulation rate of 12% in different humidity environments; in 2020, Ergoktas et al. from the University of Manchester (Nano Lett. 2020, 20, 5346-5352) developed a graphene-based adaptive infrared fabric on a conductive fabric substrate based on chemical vapor deposition, and the fabric size was only 15×15 cm 2 . Its infrared emissivity changed from the initial 0.7 to 0.35 under different voltages, and the regulation rate was 0.35; in the field of patents, there is no report on fibers and fabrics for thermoradiative regulation.

[0004] However, the existing dynamic thermal regulation fabrics have low modulation amplitude, high preparation cost, small fabric area, and are difficult to meet industrial applications. Summary of the Invention

[0005] Aiming at the defects in the prior art, the purpose of the present invention is to provide an intelligent thermoradiative regulation superstructure fiber, a preparation method thereof, and a fabric. The superstructure fiber provided by the present invention includes a high-emission core layer yarn located in the inner layer and a low-emission shell layer yarn located in the outer layer. The shell layer metal yarn has spacing-dependent resonance coupling absorption, and the core layer and the shell layer have completely opposite infrared radiation characteristics. Compared with the thermoregulation fibers in other studies, the intelligent thermoradiative regulation superstructure fiber and fabric of the present invention can achieve a high-performance dynamic radiation modulation rate.

[0006] The present invention provides an intelligent thermal radiation regulation superstructure fiber, which is characterized in that it includes a high-emission core layer yarn located in the inner layer and a low-emission shell layer yarn located in the outer layer;

[0007] The high-emission core layer yarn includes one or more of high-emission polymer yarns, high-emission polymer-inorganic micro-nano particle composite yarns;

[0008] The low-emission shell layer yarn includes one or more of metal filaments, metal-coated yarns, and conductive solution-coated yarns.

[0009] In one embodiment, the high-emission polymer includes one or more of polyurethane, polydimethylsiloxane, styrene-ethylene-butene-styrene block copolymer, polytrimethylene terephthalate, polyamide, polyethylene, polypropylene, polyethylene terephthalate, polybutylene terephthalate, polyolefin elastomer, and thermoplastic polyamide elastomer;

[0010] The inorganic micro-nano particles include one or more of alumina, titanium dioxide, silicon dioxide, zinc oxide, barium sulfate, silicon carbide, silicon nitride, zinc sulfide, magnesium oxide, iron oxide, boron nitride, barium carbonate, and aluminum silicate;

[0011] The metal filaments include one or more of silver wire, copper wire, gold wire, aluminum wire, titanium wire, tungsten wire, platinum wire, and stainless steel wire;

[0012] The metal-coated yarns include one or more of silver layer, gold layer, copper layer, aluminum layer, and platinum layer;

[0013] The conductive solution-coated yarns include one or more of poly(3,4-ethylenedioxythiophene)-polystyrenesulfonic acid, polyaniline, polypyrrole, liquid metal, and transition metal carbon / nitrogen / carbon nitride.

[0014] In one embodiment, the diameter of the high-emission core layer yarn is 50μm - 2000μm, the particle size range of the inorganic micro-nano particles is 0.01μm - 30μm, and the volume ratio of the high-emission polymer to the inorganic micro-nano particles is 1:(0.02 - 1).

[0015] In one embodiment, the diameter of the low-emission shell layer yarn is 1μm - 1000μm, and the thicknesses of both the metal coating and the conductive solution coating are 0.01μm - 1μm.

[0016] The second aspect of the present invention also provides a preparation method of the above-mentioned intelligent thermal radiation regulation superstructure fiber, including the following steps: using the high-emission core layer yarn as the axis, rotating and coating the low-emission shell layer yarn around the high-emission core layer yarn, and then collecting it through an automatic winding device to obtain the intelligent thermal radiation regulation superstructure fiber.

[0017] In one embodiment, the rotational covering speed of the low-emission shell layer yarn is 100 rpm - 3000 rpm, and the collecting speed of the automatic winding device is 50 mm / min - 300 mm / min.

[0018] In one embodiment, it further includes: color pigments can be coated or covered on the intelligent thermal radiation regulation superstructure fiber to obtain the colored intelligent thermal radiation regulation superstructure fiber.

[0019] In one embodiment, the color pigments include infrared transparent pigments and polymers;

[0020] The infrared transparent pigments include one or more of zinc oxide, barium fluoride, iron oxide, nano-silicon powder, Prussian blue, goethite, zinc selenide;

[0021] The polymers include one or more of polyamide 6, polyamide 66, polyethylene, poly-4-methyl-1-pentene, polytetrafluoroethylene, polymethyl methacrylate, or styrene-ethylene-butene-styrene block copolymer;

[0022] The mass mixing ratio of the infrared transparent pigment to the polymer is (0.2 - 15):1.

[0023] The third aspect of the present invention also provides a fabric, which is made by weaving, knitting, or braiding the above-mentioned intelligent thermal radiation regulation superstructure fiber and other fibers, wherein:

[0024] The intelligent thermal radiation regulation superstructure fiber serves as warp and weft yarns; or the intelligent thermal radiation regulation superstructure fiber serves as one of warp and weft yarns, and the other fiber serves as the other of warp and weft yarns.

[0025] In one embodiment, the other fibers include one or more of metal yarns, cotton yarns, linen yarns, polyester yarns.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. The low-emission shell layer yarn has spacing-dependent resonance coupling absorption and a low infrared emissivity. After rotational covering with a high-emission core layer yarn that has a high infrared emissivity and an infrared emission characteristic completely opposite to that of the low-emission shell layer yarn, the intelligent thermal radiation regulation superstructure fiber provided by the present invention can be obtained; the intelligent thermal radiation regulation superstructure fiber provided by the present invention can achieve changes in different infrared emissivities under the action of external forces to achieve a high-performance dynamic radiation modulation rate result;

[0028] 2. In the preparation method of the intelligent thermal radiation regulation superstructure fiber provided by the present invention, the covering yarn preparation process is adopted, which is different from some other methods for preparing radiation thermal regulation fibers, such as magnetron sputtering, electrospinning, chemical deposition, etc. It can effectively reduce the raw material cost, simplify the whole process flow, improve the production efficiency, provide guarantee for continuous large-scale and amplified production lines, meet the industrial application requirements, and improve the competitiveness of products in the market;

[0029] 3. In the fabric woven from the intelligent thermal radiation regulation superstructure fiber provided by the present invention, large-area fabrics can be formed through simple and low-cost processes such as weaving, knitting, and braiding. It can not only continue the high dynamic infrared regulation rate of the superstructure fiber, realize intelligent temperature regulation, but also has good mechanical properties and wearable properties, including air permeability, moisture permeability, washability, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] By reading the following detailed description of the non-restrictive embodiments with reference to the accompanying drawings, other features, objectives, and advantages of the present invention will become more obvious:

[0031] Figure 1 It is a schematic structural diagram of the intelligent thermal radiation regulation superstructure fiber provided by the present invention;

[0032] Figure 2 It is a photo of the intelligent thermal radiation regulation superstructure fiber prepared in Example 1 of the present invention;

[0033] Figure 3 It is a photo of the intelligent thermal radiation regulation fabric prepared in Example 1 of the present invention;

[0034] Figure 4 It is a spectrogram of the intelligent radiation thermal regulation fabric prepared in Example 1 of the present invention under different strains;

[0035] Figure 5 It is a spectrogram of the intelligent radiation thermal regulation fabric prepared in Example 2 of the present invention under different strains;

[0036] Figure 6 It is a photo of the intelligent thermal radiation regulation fabric prepared in Example 3 of the present invention;

[0037] Figure 7 It is a spectrogram of the energy radiation thermal regulation fabric prepared in Example 3 of the present invention under different strains;

[0038] Figure 8 It is a spectrogram of the energy radiation thermal regulation fabric prepared in Comparative Example 1 of the present invention under different strains;

[0039] Figure 9Spectral diagram of the heat-radiation-regulated fabric prepared in Comparative Example 2 of the present invention under different strains;

[0040] Figure 10 Spectral diagram of the heat-radiation-regulated fabric prepared in Comparative Example 3 of the present invention under different strains;

[0041] In the figure: 1 - high-emission core layer yarn; 2 - low-emission shell layer yarn. Detailed implementation manners

[0042] The present invention will be described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those of ordinary skill in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0043] Referring to Figure 1 As shown, the present invention provides an intelligent heat-radiation-regulated superstructure fiber, which includes a high-emission core layer yarn located in the inner layer and a low-emission shell layer yarn located in the outer layer. It should be noted that the high emission and low emission here are relative concepts, that is, compared with the shell layer yarn, the core layer yarn has a higher infrared emissivity;

[0044] The high-emission core layer yarn includes one or more of high-emission polymer yarns and high-emission polymer-inorganic micro-nano particle composite yarns. Specifically, the high-emission polymer yarn or high-emission polymer-inorganic micro-nano particle composite yarn is prepared by processes such as melt spinning, wet spinning, and electrospinning;

[0045] The low-emission shell layer yarn includes one or more of metal filaments, metal-coated yarns, and conductive solution-coated yarns. Among them, the low-emission metal yarn core layer yarn can be directly composed of metal filaments; or a metal coating is sprayed on the surface of the substrate yarn by evaporation deposition or chemical deposition; or a conductive solution coating is applied to the substrate yarn by a coating process.

[0046] The low-emission shell layer yarn has spacing-dependent resonance coupling absorption and a lower infrared emissivity. After being rotationally coated with the high-emission core layer yarn that has a higher infrared emissivity and an infrared emission characteristic completely opposite to that of the low-emission shell layer yarn, the intelligent heat-radiation-regulated superstructure fiber provided by the present invention can be obtained. Under the action of external force, it realizes the change of different infrared emissivities to achieve the result of a high-performance dynamic radiation modulation rate.

[0047] In one embodiment, the high-emission polymer includes one or more of polyurethane (PU), polydimethylsiloxane (PDMS), styrene-ethylene-butene-styrene block copolymer (SEBS), polytrimethylene terephthalate (PTT), polyamide (PA), polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyolefin elastomer (POE), thermoplastic polyamide elastomer (TPAE). The high-emission polymer enhances the infrared absorption of the superstructural fiber through the vibration and rotational transitions of chemical bonds or functional groups in its molecular structure;

[0048] The inorganic micro-nano particles include one or more of aluminum oxide (Al2O3), titanium dioxide (TiO2), silicon dioxide (SiO2), zinc oxide (ZnO), barium sulfate (BaSO4), silicon carbide (SiC), silicon nitride (Si3N4), zinc sulfide (ZnS), magnesium oxide (MgO), iron oxide (Fe2O3), boron nitride (BN), barium carbonate (BaCO3), and aluminum silicate (Al2SiO5). The inorganic micro-nano particles with wide band gaps enhance the infrared absorption of the superstructural fiber due to phonon-polariton resonance;

[0049] The metal filaments include one or more of silver wire, copper wire, gold wire, aluminum wire, titanium wire, tungsten wire, platinum wire, and stainless steel wire;

[0050] The metal-coated yarns include one or more of silver layer, gold layer, copper layer, aluminum layer, and platinum layer;

[0051] The conductive solution-coated yarns include one or more of poly(3,4-ethylenedioxythiophene)-polystyrenesulfonic acid, polyaniline, polypyrrole, liquid metal, and transition metal carbon / nitrogen / carbonitrides.

[0052] In one embodiment, the diameter of the high-emission core layer yarn is 50μm - 2000μm. If the diameter of the prepared high-emission core layer yarn is too small or too large, it will lead to poor wearability, thereby affecting the performance of the intelligent thermal radiation regulation superstructural fiber; the particle size range of the inorganic micro-nano particles is 0.01μm - 30μm. Too large or too small particle size will reduce the infrared emission performance; the volume ratio of the high-emission polymer to the inorganic micro-nano particles is 1:(0.02 - 1).

[0053] In one embodiment, the diameter of the low-emission shell layer yarn is 1μm - 1000μm, and the thicknesses of both the metal coating and the conductive solution coating are 0.01μm - 1μm.

[0054] The second aspect of the present invention provides a method for preparing the above-mentioned intelligent thermal radiation regulation superstructure fiber, which includes the following steps: using the high-emission core layer yarn as the axis, rotating and coating the low-emission shell layer yarn around the high-emission core layer yarn, and then collecting it through an automatic winding device to obtain the intelligent thermal radiation regulation superstructure fiber.

[0055] The present invention provides a method for preparing an intelligent thermal radiation regulation superstructure fiber. By adopting the covering yarn preparation process, it can effectively reduce the cost of raw materials, simplify the entire process flow, improve production efficiency, provide guarantee for continuous large-scale and enlarged production lines, meet the industrial application requirements, and improve the competitiveness of products in the market.

[0056] In one embodiment, the rotation coating speed of the low-emission shell layer yarn is 100 rpm - 3000 rpm, and the collection speed of the automatic winding device, that is, the collection speed of the high-emission core layer yarn, is 50 mm / min - 300 mm / min. The rotation coating and the collection speed of the automatic winding device will both affect the tightness of the finally formed superstructure fiber by coating. Being too tight or too sparse will both lead to a decrease in the regulation range of the infrared emissivity.

[0057] In one embodiment, it further includes: color pigments can be coated or covered on the outside of the intelligent thermal radiation regulation superstructure fiber to obtain the colored intelligent thermal radiation regulation superstructure fiber.

[0058] In one embodiment, the color pigments include infrared transparent pigments and polymers;

[0059] The infrared transparent pigments include one or more of zinc oxide (ZnO), barium fluoride (BaF2), iron oxide (Fe2O3), nano-silicon powder (Si), Prussian blue (C 18 Fe7N 18 )), goethite (FeO(OH)), zinc selenide (ZnSe);

[0060] The polymers include one or more of polyamide 6 (PA6), polyamide 66 (PA66), polyethylene (PE), polymethylpentene (TPX), polytetrafluoroethylene (PTFE), polymethyl methacrylate (PMMA), or styrene-ethylene-butene-styrene block copolymer (SEBS);

[0061] The mass mixing ratio of the infrared transparent pigment to the polymer is (0.2 - 15):1.

[0062] The third aspect of the present invention further provides a fabric, which is made by weaving, knitting, or braiding the above-mentioned intelligent thermal radiation regulation superstructure fiber and other fibers. Among them:

[0063] The intelligent heat radiation regulation superstructure fiber serves as the warp and weft; or the intelligent heat radiation regulation superstructure fiber serves as one of the warp and weft, and the other fiber serves as the other of the warp and weft.

[0064] In one embodiment, the other fiber includes one or more of metal yarn, cotton yarn, linen yarn, and polyester yarn. It should be noted that the choice of the other fiber is not limited to metal yarn. Those skilled in the art can select the corresponding fiber as the other fiber according to the requirements of the final fabric and weave it with the intelligent heat radiation regulation superstructure fiber in the above-mentioned manner. The selected fibers are all within the protection scope of the present invention.

[0065] The present invention will be further described in detail below through examples:

[0066] Example 1

[0067] This example provides an intelligent heat radiation regulation superstructure fiber, its preparation method, and a fabric.

[0068] Composition of the intelligent heat radiation regulation superstructure fiber: The high-emission core layer yarn is a composite yarn of polyurethane (PU) and alumina (Al2O3), and the low-emission shell layer yarn is a silver yarn.

[0069] Preparation method of the intelligent heat radiation regulation superstructure fiber: Mix polyurethane (PU) polymer and alumina (Al2O3) in a volume ratio of 1:0.5. The particle size of alumina is 10 μm. Prepare a high-emission core layer yarn with a diameter of 200 μm by melt spinning. Select a silver yarn with a diameter of 30 μm as the low-emission shell layer yarn. Set the rotational coating speed of the low-emission shell layer yarn to 1400 rpm and the collection speed of the high-emission core layer yarn to 50 mm / min to obtain a continuously and uniformly coated intelligent heat radiation regulation superstructure fiber based on a core-shell structure, as Figure 2 shown;

[0070] Composition and preparation method of the fabric: Use the intelligent heat radiation regulation superstructure fiber obtained in this example as the weft and silver yarn as the warp for warp and weft knitting to obtain a large-area intelligent heat radiation regulation fabric, as Figure 3 shown;

[0071] Testing of the fabric: Use a Fourier transform infrared spectrometer (FTIR) to measure the reflectivity and transmittance of the fabric at different wavelengths. Apply tensile force at both ends of the fabric to obtain deformation. By calculating the emissivity = 1 - reflectivity - transmittance, the optical performance diagram of the fabric provided in this example under different strains can be measured. Referring to Figure 4 shown, the infrared emissivity regulation range of the fabric in this example is greater than 0.5 under 0% and 100% strains.

[0072] Example 2

[0073] This example provides an intelligent thermal radiation regulation superstructure fiber, its preparation method, and a fabric.

[0074] Composition of the intelligent thermal radiation regulation superstructure fiber: The high-emissivity core layer yarn is a styrene-ethylene-butene-styrene block copolymer (SEBS) yarn, and the low-emissivity shell layer yarn is a silver yarn;

[0075] Preparation method of the intelligent thermal radiation regulation superstructure fiber: The styrene-ethylene-butene-styrene block copolymer (SEBS) is used to prepare a high-emissivity core layer yarn with a diameter of 300 μm by wet spinning. A silver yarn with a diameter of 30 μm is selected as the low-emissivity shell layer yarn. The rotational coating speed of the low-emissivity shell layer yarn is set to 1500 rpm, and the collection speed of the high-emissivity core layer yarn is 40 mm / min to obtain a continuously and uniformly coated intelligent thermal radiation regulation superstructure fiber based on a core-shell structure;

[0076] Composition and preparation method of the fabric: Using the intelligent thermal radiation regulation superstructure fiber obtained in this example as the weft yarn and silver yarn as the warp yarn, warp and weft knitting is carried out to obtain a large-area intelligent thermal radiation regulation fabric, as Figure 3 shown;

[0077] Testing of the fabric: Using a Fourier transform infrared spectrometer (FTIR) to measure the reflectivity and transmittance of the fabric at different wavelengths, applying tensile force at both ends of the fabric to obtain deformation, and calculating the emissivity = 1 - reflectivity - transmittance, the optical performance diagram of the fabric provided in this example under different strains can be measured. Referring to Figure 5 shown, the infrared emissivity regulation range of the fabric in this example is greater than 0.5 under 0% and 100% strains.

[0078] Example 3

[0079] This example provides an intelligent thermal radiation regulation superstructure fiber, its preparation method, and a fabric.

[0080] Composition of the intelligent thermal radiation regulation superstructure fiber: The high-emissivity core layer yarn is a composite yarn of polyurethane (PU) and alumina (Al2O3), and the low-emissivity shell layer yarn is a silver yarn;

[0081] Preparation method of intelligent thermal radiation regulation superstructure fiber: Mix polyurethane (PU) polymer and alumina (Al2O3) in a volume ratio of 1:0.5. The particle size of alumina is 10 μm. Prepare a high-emission core layer yarn with a diameter of 200 μm by melt spinning. Select a silver yarn with a diameter of 30 μm as the low-emission shell layer yarn. Set the rotational coating speed of the low-emission shell layer yarn at 1400 rpm and the collection speed of the high-emission core layer yarn at 50 mm / min to obtain a continuously and uniformly coated intelligent thermal radiation regulation superstructure fiber based on a core-shell structure, as Figure 6 shown;

[0082] Preparation method of colored intelligent thermal radiation regulation superstructure fiber: Mix infrared transparent pigment barium fluoride and polymer polyethylene in a mass ratio of 1:3, and coat it on the intelligent thermal radiation regulation superstructure fiber in this embodiment to obtain a white intelligent thermal radiation regulation superstructure fiber;

[0083] Composition and preparation method of fabric: Use the white intelligent thermal radiation regulation superstructure fiber obtained in this embodiment as the weft yarn and silver yarn as the warp yarn for warp and weft knitting to obtain a large-area intelligent thermal radiation regulation fabric, as Figure 6 shown;

[0084] Testing of fabric: Use a Fourier transform infrared spectrometer (FTIR) to measure the reflectivity and transmittance of the fabric at different wavelengths. Apply tensile force at both ends of the fabric to obtain deformation. By calculating emissivity = 1 - reflectivity - transmittance, the optical performance diagram of the fabric provided in this embodiment under different strains can be measured. Referring to Figure 7 shown, the infrared emissivity regulation range of the fabric in this embodiment is greater than 0.4 under 0% and 100% strains.

[0085] Comparative Example 1

[0086] This comparative example provides an intelligent thermal radiation regulation superstructure fiber and its preparation method and a fabric.

[0087] Select a silver yarn with a diameter of 1500 μm as the low-emission shell layer yarn, and the other components and steps are the same as those in Example 1;

[0088] Referring to Figure 8 shown, after applying the same strain, due to the increase in the diameter of the low-emission shell layer yarn, the resonance coupling absorption decreases, resulting in a reduction in the infrared emissivity regulation range.

[0089] Comparative Example 2

[0090] This comparative example provides an intelligent thermal radiation regulation superstructure fiber and its preparation method and a fabric.

[0091] The polyurethane (PU) polymer and alumina (Al2O3) were mixed at a volume ratio of 1:2. The particle size of alumina was 60 μm. The high-emission core layer yarn was prepared by melt spinning. The remaining components and steps were the same as those in Example 1;

[0092] Referring to Figure 9 As shown, after applying the same strain, due to the reduction in the high-emission performance of the core layer yarn, the regulation range of the infrared emissivity decreased.

[0093] Comparative Example 3

[0094] This comparative example provides an intelligent thermal radiation regulation superstructure fiber, its preparation method, and a fabric.

[0095] In the preparation method of the intelligent thermal radiation regulation superstructure fiber, the rotational coating speed of the low-emission shell layer yarn was set at 50 rpm, and the collection of the high-emission core layer yarn was 500 mm / min. The remaining components and steps were the same as those in Example 1;

[0096] Referring to Figure 10 As shown, after applying the same strain, due to the loose coating of the obtained intelligent thermal radiation regulation superstructure fiber, the regulation range of the infrared emissivity decreased.

[0097] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments. Those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Without conflict, the embodiments of the present application and the features in the embodiments can be combined arbitrarily.

Claims

1. An intelligent thermoradiative regulation superstructure fiber, characterized in that, It includes a high-emission core layer yarn located in the inner layer and a low-emission shell layer yarn located in the outer layer; The high-emission core layer yarn includes one or more of high-emission polymer yarns and high-emission polymer-inorganic micro-nano particle composite yarns; The low-emission shell layer yarn includes one or more of metal filaments, metal-coated yarns, and conductive solution-coated yarns.

2. The intelligent thermoradiative regulation superstructural fiber according to claim 1, characterized in that The high-emission polymer includes one or more of polyurethane, polydimethylsiloxane, styrene-ethylene-butene-styrene block copolymer, polytrimethylene terephthalate, polyamide, polyethylene, polypropylene, polyethylene terephthalate, polybutylene terephthalate, polyolefin elastomer, and thermoplastic polyamide elastomer; The inorganic micro-nano particles include one or more of alumina, titanium dioxide, silica, zinc oxide, barium sulfate, silicon carbide, silicon nitride, zinc sulfide, magnesium oxide, iron oxide, boron nitride, barium carbonate, and aluminum silicate; The metal filaments include one or more of silver wire, copper wire, gold wire, aluminum wire, titanium wire, tungsten wire, platinum wire, and stainless steel wire; The metal-coated yarns include one or more of silver layer, gold layer, copper layer, aluminum layer, and platinum layer; The conductive solution-coated yarns include one or more of poly(3,4-ethylenedioxythiophene)-polystyrenesulfonic acid, polyaniline, polypyrrole, liquid metal, and transition metal carbon / nitrogen / carbon nitride.

3. The intelligent heat radiation regulation superstructure fiber according to claim 1, characterized in that The diameter of the high-emission core layer yarn is 50μm - 2000μm, the particle size range of the inorganic micro-nano particles is 0.01μm - 30μm, and the volume ratio of the high-emission polymer to the inorganic micro-nano particles is 1:(0.02 - 1).

4. The intelligent thermoradiative regulation superstructural fiber according to claim 1, wherein The diameter of the low-emission shell layer yarn is 1μm - 1000μm, and the thicknesses of both the metal coating and the conductive solution coating are 0.01μm - 1μm.

5. A method for preparing the intelligent thermal radiation regulation superstructure fiber as described in claims 1-4, characterized in that, It includes the following steps: Using the high-emission core layer yarn as the axis, the low-emission shell layer yarn is rotationally coated around the high-emission core layer yarn and then collected by an automatic winding device to obtain an intelligent thermal radiation regulation superstructure fiber.

6. The preparation method according to claim 5, characterized in that, The rotational coating speed of the low-emission shell layer yarn is 100rpm - 3000rpm, and the collection speed of the automatic winding device is 50mm / min - 300mm / min.

7. The preparation method according to claim 5, wherein It also includes: Color pigments can be coated or wrapped outside the intelligent thermal radiation regulation superstructure fiber to obtain a colored intelligent thermal radiation regulation superstructure fiber.

8. The preparation method according to claim 7, wherein The color pigments include infrared transparent pigments and polymers; The infrared transparent pigments include one or more of zinc oxide, barium fluoride, iron oxide, nano-silicon powder, Prussian blue, goethite, and zinc selenide; The polymers include one or more of polyamide 6, polyamide 66, polyethylene, poly-4-methyl-1-pentene, polytetrafluoroethylene, polymethyl methacrylate, or styrene-ethylene-butene-styrene block copolymer; The mass mixing ratio of the infrared transparent pigment to the polymer is (0.2 - 15):

1.

9. A fabric, characterized in that, It includes the intelligent thermal radiation regulation superstructure fiber described in claims 1 - 4 and other fibers prepared by weaving, knitting, or braiding. Among them: The intelligent heat radiation regulation superstructure fiber serves as the warp and weft; or the intelligent heat radiation regulation superstructure fiber serves as one of the warp and weft, and the other fiber serves as the other of the warp and weft.

10. The fabric according to claim 9, characterized in that, The other fiber includes one or more of metal yarn, cotton yarn, linen yarn, and polyester yarn.

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