WO2023050751A1 - Tissu à température constante double face et procédé de préparation associé - Google Patents

Tissu à température constante double face et procédé de préparation associé Download PDF

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Publication number
WO2023050751A1
WO2023050751A1 PCT/CN2022/084895 CN2022084895W WO2023050751A1 WO 2023050751 A1 WO2023050751 A1 WO 2023050751A1 CN 2022084895 W CN2022084895 W CN 2022084895W WO 2023050751 A1 WO2023050751 A1 WO 2023050751A1
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Prior art keywords
fiber
double
fabric
fibers
constant temperature
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PCT/CN2022/084895
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English (en)
Chinese (zh)
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杨艳
杨涛
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杨艳
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Priority to US18/271,276 priority Critical patent/US20240044071A1/en
Priority to EP22874152.6A priority patent/EP4215657A4/fr
Priority to JP2022581622A priority patent/JP7465588B2/ja
Publication of WO2023050751A1 publication Critical patent/WO2023050751A1/fr

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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
    • D03D15/208—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads cellulose-based
    • D03D15/217—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads cellulose-based natural from plants, e.g. cotton
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
    • D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D11/00—Double or multi-ply fabrics not otherwise provided for
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
    • D03D15/283—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
    • D03D15/292—Conjugate, i.e. bi- or multicomponent, fibres or filaments
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/30—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the fibres or filaments
    • D03D15/37—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the fibres or filaments with specific cross-section or surface shape
    • D—TEXTILES; PAPER
    • D03—WEAVING
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    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
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    • D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
    • D03D15/52—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads thermal insulating, e.g. heating or cooling
    • D—TEXTILES; PAPER
    • D03—WEAVING
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    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
    • D03D15/547—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads with optical functions other than colour, e.g. comprising light-emitting fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B21/14—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes
    • D04B21/16—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes incorporating synthetic threads
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    • D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
    • D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
    • D06M11/44—Oxides or hydroxides of elements of Groups 2 or 12 of the Periodic Table; Zincates; Cadmates
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    • D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
    • D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
    • D06M11/46—Oxides or hydroxides of elements of Groups 4 or 14 of the Periodic Table; Titanates; Zirconates; Stannates; Plumbates
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    • D06M11/77—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof
    • D06M11/79—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof with silicon dioxide, silicic acids or their salts
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    • D06M14/00—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials
    • D06M14/02—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials on to materials of natural origin
    • D06M14/04—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials on to materials of natural origin of vegetal origin, e.g. cellulose or derivatives thereof
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    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/227—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of hydrocarbons, or reaction products thereof, e.g. afterhalogenated or sulfochlorinated
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    • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/227—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of hydrocarbons, or reaction products thereof, e.g. afterhalogenated or sulfochlorinated
    • D06M15/233—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of hydrocarbons, or reaction products thereof, e.g. afterhalogenated or sulfochlorinated aromatic, e.g. styrene
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    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
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Definitions

  • the application relates to the field of textile technology, in particular to a double-sided constant temperature fabric and a preparation method thereof.
  • the constant temperature fabric can realize the regulation of human body temperature by exerting the functions of radiation cooling and heat reflection, which is an energy-saving, environmentally friendly, convenient and effective thermal management method.
  • Constant temperature fabrics mainly use technologies such as radiation cooling, heat reflection, and temperature-changing materials to maintain the contact temperature of human skin in a comfortable range, that is, to keep warm when it is cold, and to cool down when it is hot.
  • Most of the energy of solar radiation is concentrated in the visible light and infrared light regions.
  • Emissivity fabrics can enable the human body to conduct radiative heat exchange with the low-temperature outer space and the upper atmosphere through the "atmospheric window" to obtain cooling effects.
  • enhancing the material's reflection of sunlight and reducing the penetration and absorption of sunlight can reduce the heat accumulation of solar radiation and reduce the harm of ultraviolet rays to human health.
  • Invention patent TWI707906B in Taiwan, China discloses a graphene constant temperature fabric, which uses graphene to have special thermal properties and excellent electrical conductivity, and prepares a suspension solution of graphene nanosheets with a solvent combination of low boiling point and high surface tension.
  • the graphene resin solution is prepared from the graphene nano sheet suspension solution and the hydrophobic resin, and the graphene resin solution is covered and embedded into the fabric tissue by coating or printing to form a graphene thermostatic layer.
  • the graphene thermostatic layer can accelerate the dissipation of heat from the human skin to achieve a cool effect.
  • the graphene thermostatic layer can homogenize the temperature of different parts of the human skin And release the far-infrared rays radiated by human skin, and achieve the effect of keeping warm and constant temperature at the same time.
  • the consequences of long-term human exposure to graphene cannot be fully determined at present.
  • the use of graphene in fabrics that are in contact with the human body for a long time lacks safety guarantees, and graphene will pollute the environment during the manufacturing process.
  • the US patent US11058161B2 discloses a heat reflective fabric, which contains at least one metal layer, which can reduce the heat loss of the human body from external radiation by forming a radiation barrier.
  • the metal layer with a 3D warp-knit fabric with good air gaps to expose the low-emissivity surface of the metal layer, the 3D warp-knit fabric has a certain thickness to provide insulation between the metal layer and other surfaces.
  • the fabric can reflect body heat back into the system to reduce body heat loss, but it only has a thermal insulation effect and cannot cool the body temperature to achieve constant temperature in hot weather.
  • Chinese invention patent CN104127279B discloses a multifunctional membrane that spontaneously regulates temperature.
  • the membrane includes a functional material carrier layer and a thermal insulation layer close to the skin from the outside to the inside.
  • the functional material carrier layer is a sealed cavity structure made of impermeable flexible materials, loaded with refrigeration or heating chemical raw materials; the heat preservation layer is made of materials with waterproof and heat preservation properties. If heating chemical raw materials are used, the functional material carrier layer can have a heating effect; if cooling chemical raw materials are used, the insulation layer can avoid local frostbite, and at the same time, uniform and stable heat exchange occurs between the functional material carrier layer and the skin, Play a long-term cooling effect.
  • the film lacks air permeability and moisture permeability, and the temperature control effect is time-sensitive, so it cannot be applied to daily clothing.
  • a radiation cooling fabric is disclosed in Chinese invention patent CN113136724A.
  • the fabric contains silk fibers, and the radiative cooling fabric includes materials attached to the fibers with a refractive index higher than 1.6 and lower than 3.0.
  • the ultraviolet reflectance is improved by superimposing the materials with high refractive index attached to the fibers and the fibers.
  • the reflectance of ultraviolet light has increased by 42%, making the reflectance of the entire solar light band reach 95%.
  • the temperature of the treated fabric in the sun can be about 3.6 degrees lower than room temperature, while covering It can be about 12 degrees lower on the skin than cotton fabrics.
  • the fabric does not have a thermal insulation effect and cannot create a constant temperature environment at low temperatures.
  • the embodiment of the present application provides a double-sided thermostatic fabric and a preparation method thereof, so as to solve the technical defects existing in the prior art.
  • the application provides a double-sided constant temperature fabric, which includes first fibers and second fibers, the first fibers are hemp fibers; the second fibers are helical fibers with helical grooves on the surface; the first fibers A fiber and a second fiber are composited together to form the fabric, one side of the fabric is the first fiber, and the other side is the second fiber, and when worn, the first fiber side and the second fiber side can all face the inside or the outside.
  • hemp fiber (natural hemp fiber) is modified hemp fiber.
  • the second fiber includes a polyester fiber and a sunscreen reflective coating wrapped around the polyester fiber, and the spiral groove is arranged outside the sunscreen reflective coating.
  • the components of the sunscreen reflective coating include alkyd resin and nano sunscreen particles, and the weight ratio of the two is 1:(0-0.3).
  • the alkyd resin is a silicone-modified alkyd resin; preferably, the silicone-modified alkyd resin is a polyalkyl silicone resin, a polyaryl silicone resin or a polyalkylaryl organic It is obtained by polycondensation of silicone resin and alkyd resin.
  • the outer surface of the helical fiber has a tooth shape, and the tooth shape is trapezoidal, rectangular or triangular; preferably, the tooth shape angle of the tooth shape is 0-30°, and the width from the top of the tooth to the bottom of the tooth is 0.1- 3.0 ⁇ m, the pitch is 0.1 ⁇ 5.0 ⁇ m.
  • the particle size range of the nano sunscreen particles is 0.5-10 ⁇ m.
  • Another invention point of the present invention is to provide a method for preparing the double-sided constant temperature fabric according to any of the above paragraphs, the preparation method is:
  • Method 1 melt the alkyd resin or dissolve it in a solvent, add nano sunscreen particles, and stir for 20-60 minutes; 2 make the substance obtained in 1 a viscous semi-solid form; 3 thoroughly Remove the solvent or lower the temperature to make it a solid film to obtain the sunscreen reflective coating; 4 then wrap the sunscreen reflective coating around the polyester fiber;
  • Method 2 1Consistent with step 1 in method 1; 2Make the substance obtained in 1 a viscous semi-solid form; 3Apply the viscous semi-solid obtained in step 2 on the periphery of the polyester fiber .
  • the sunscreen reflective coating obtained in step 3 is provided with the threaded groove described in any paragraph above;
  • the method of becoming a viscous semi-solid includes: A. Adding a thickener; B. If it is dissolved, remove part of the solvent; C. If it is melted, then Lower the temperature to make it thicker.
  • a binder is added in step 1 in the above-mentioned method 1 or method 2, and the binder includes at least one of styrene-butadiene rubber, neoprene rubber, and nitrile rubber.
  • the technical solution provided by the present invention has at least the following advantages: the double-sided thermostatic fabric in this application can be worn on both sides, that is, the outside can face outside but also can face inward; correspondingly, the inside can face but can also face In addition, different ways of wearing have different effects.
  • Silicon-modified alkyd resins have excellent light reflection, thermal insulation, outdoor weatherability and UV resistance. Adding the nano-sunscreen particles prepared by the uniform precipitation method into the silicon-modified alkyd resin in a certain proportion can further improve its sunscreen and light reflection capabilities.
  • the introduction of the thread structure can increase the reflection of sunlight under different incident angles.
  • Hemp fiber not only retains the original characteristics of hemp fiber, such as looseness, breathability, fast heat and heat conduction, cool and crisp, not close to the skin when sweating, insect-proof and mildew-proof, and less static electricity, but also has partial hydrophobic characteristics, which strengthens its moisture-conducting and dehumidifying functions.
  • Synthetic fibers and natural fibers are improved and blended separately, which greatly improves the comfort of the fabric.
  • fabrics with one-way moisture absorption characteristics can be produced to improve the dryness of the fabric.
  • Fig. 1 is a schematic structural diagram of a spiral groove shown in an embodiment of the present application.
  • This embodiment provides a temperature-adjustable double-sided constant temperature fabric, which includes first fibers and second fibers, and the two are combined into a double-layer fiber structure.
  • the compound method can refer to the double-layer composite method in the prior art, preferably using The method of connecting the inner warp and the outer weft makes the inner and outer layers of fabrics composited to form a double-sided fabric.
  • the first fiber is hemp fiber, preferably natural hemp fiber.
  • the second fiber is a helical fiber with thread-like grooves on its surface.
  • the hemp fiber is preferably a modified hemp fiber.
  • natural hemp fiber it is healthier for the human body and has higher hygroscopicity. By modifying it, it can absorb moisture while increasing thermal conductivity.
  • the modified hemp fiber be obtained by grafting and copolymerizing hemp fiber and polybutylene succinate (PBS). After such modification, the hemp fiber The fiber has good unidirectional moisture-wicking function and good thermal conductivity. As the inner layer of the fabric, it has strong practicability and good effect.
  • the modification method is preferably as follows: hemp fiber is pretreated with potassium permanganate solution; using decahydronaphthalene as a solvent, succinic acid and butanediol are mixed with catalyst SnCl After mixing, at 150 React at -160°C for 1-2 hours until the esterification is complete, then raise the temperature to 190-200°C, add pretreated hemp fiber, and graft copolymerization occurs. Heat preservation for 10-12 hours to obtain modified hemp fiber.
  • the fineness of the second fiber is 2.0dtex to 5.0dtex, such as 2.0dtex, 2.5dtex, 3.0dtex, 3.5dtex, 4.0dtex, 4.5dtex, 5.0dtex, etc., and the fiber diameter ranges from 15.0 to 30.0 ⁇ m.
  • the use of fibers in this denier range can satisfy the application of the present invention.
  • the second fiber includes a polyester fiber and a sunscreen and reflective coating wrapped around the polyester fiber, and the spiral groove is disposed outside the sunscreen and reflective coating.
  • the polyester fiber is polyethylene terephthalate.
  • the components of the sunscreen reflective coating include alkyd resin and nano sunscreen particles, and the weight ratio of the two is 1:(0-0.3).
  • the alkyd resin is preferably a silicone-modified alkyd resin.
  • the silicone-modified alkyd resin is obtained by polycondensation of polyalkyl silicone resin, polyaryl silicone resin or polyalkylaryl silicone resin and alkyd resin.
  • the outer surface of the helical fiber has a tooth shape, and the tooth shape is trapezoidal, rectangular or triangular, more preferably trapezoidal or rectangular, and most preferably trapezoidal.
  • the profile angle of the profile is 0-30°, preferably 17-23°, such as 17°, 18°, 19°, 20°, 21°, 22°, 23°;
  • the width from tooth top to tooth bottom is 0.1-3.0 ⁇ m, preferably 0.2-1 ⁇ m, such as 0.2 ⁇ m, 0.4 ⁇ m, 0.6 ⁇ m, 0.8 ⁇ m, 1.0 ⁇ m, and the pitch is 0.1-5.0 ⁇ m, preferably 0.5-2 ⁇ m, such as 0.5 ⁇ m, 0.8 ⁇ m, 1.0 ⁇ m, 1.3 ⁇ m, 1.5 ⁇ m, 1.8 ⁇ m, 2.0 ⁇ m.
  • the particle size of the nano-sunscreen particles ranges from 0.5 to 10 ⁇ m, preferably 2 to 6 ⁇ m. Particles within this range can balance the sunscreen performance and specific surface area. If it is too small, the sunscreen effect or effect will be insufficient, and if it is too large, the sunscreen effect will be insufficient. The specific surface area is small, which affects the sun protection performance. More importantly, the introduction of nanoparticles of this size into the silicone-modified alkyd resin of the present invention can provide strong Mie scattering, thereby achieving efficient regulation of the solar radiation band and helping to regulate temperature.
  • the nano sunscreen particles include TiO2, ZnO, SiO2, ZrO2, CeO2, MgO, Al2O3, Fe2O3, Fe3O4, MgSiO3, Al2SiO5, BaCO3, BaSO4, jade powder, mica powder, quartz sand, dolomite , wax stone, borneol, calcium silicate, polyethylene (PE), TiO2, ZnO, SiO2, ZrO2, CeO2, MgO, Al2O3, Fe2O3, Fe3O4, MgSiO3, Al2SiO5, BaCO3, BaSO4, ZrN, AlN, SiN, BN, Si3N4, SiC, Zn(NO3)2, phenolic resin, bismaleimide resin, graphite, carbon nanotube, aluminum-carbon nanotube, fluororesin, tetrafluoroethylene, silicone-modified acrylic resin or fluorocarbon resin , chlorotrifluoroethylene, salicylate, benzophenone, benzotriazole, triazine
  • the solution of this embodiment has a certain effect of regulating temperature, and can maintain a relatively constant temperature state.
  • the second fiber When the weather is hot and sunny, the second fiber can be worn outward.
  • the specific sunscreen coating outside the second fiber has high reflectivity in the band of solar heat radiation, and more importantly, the specific spiral groove designed on the side where the second fiber is located, especially when the tooth angle is When the temperature is 17-23°, the irradiated sunlight can be efficiently reflected and refracted in the groove. At the same time, there are also some diffuse reflection phenomena, and their combined effects have a greater effect on cooling.
  • the alkyd resin in the second fiber especially the organosilicon-modified alkyd resin, has a strong temperature insulation effect, and can allow the high temperature outside the tissue to enter the body to the greatest extent.
  • the synergistic effect of the three has a better effect on cooling and regulating temperature.
  • the natural modified hemp fiber on the inner side also has strong functions of moisture absorption, heat absorption and unidirectional moisture transfer, which is also conducive to cooling down and makes the human body more comfortable. In general, the effect of cooling and heatstroke prevention is good.
  • the second fiber facing inward When the weather is cold, it is preferable to wear the second fiber facing inward, because the wave band of solar heat radiation and the wave band of human body heat radiation do not overlap, so the specific sunscreen coating on the second fiber has high absorption in the wave band of human body heat radiation, When worn reversely, it can play the role of heat preservation.
  • the alkyd resin in the second fiber especially the silicone-modified alkyd resin, has a strong temperature insulation effect and can keep the body temperature from being lost to the greatest extent. More importantly, the hemp fiber on the outside has better light absorption, which has a good blessing effect on maintaining or improving problems in the body.
  • sunscreen particles of a specific size are combined or combined with silicone-modified alkyd resin and helical fibers of a specific structure, which greatly increases the temperature control effect of the fabric and improves the overall effect.
  • this example is a preparation method of a double-sided constant temperature fabric, and the preparation method is:
  • Method 1 Melt or dissolve the alkyd resin in a solvent (the solubility is 60-100%, that is, it can not be completely dissolved), and then add nano-sunscreen particles under heating conditions, and stir 20-60 minutes; 2make the material obtained in 1 into a viscous semi-solid form; 3completely remove the solvent or cool down to make it a solid film to obtain the sunscreen reflective coating; 4then wrap the sunscreen reflective coating Cover the polyester fiber; the alkyd resin here can be selected from dry or semi-dry resin.
  • the solvent only needs to be able to partly dissolve the alkyd resin, such as ester, alcohol, and ketone solvents.
  • Method 2 1 is consistent with step 1 in method 1; 2 makes the substance obtained in 1 a viscous semi-solid form, and 3 coats the viscous semi-solid obtained in step 2 on the periphery of the polyester fiber .
  • Preparation of double-sided constant temperature fabric then weave the first fiber and the second fiber into a double-layer fabric, the weaving method can be based on the double-layer fabric in the prior art, preferably using the bonding method of connecting the inner warp and the outer weft.
  • the inner and outer fabrics are combined to form a double-sided fabric, such a weave.
  • the above-mentioned thread-like groove is provided on the sunscreen and reflective coating obtained in step 3, that is, on one side.
  • the thread fiber made by laser engraving or etching its surface has good light reflection and heat reflection performance, and is the outer layer of the fabric.
  • a binder is added in step 1 in the above method 1 or method 2, and the binder includes at least one of styrene-butadiene rubber, neoprene rubber, and nitrile rubber.
  • the method of becoming a viscous semi-solid includes: A. Adding a thickener; B. If it is dissolved, remove part of the solvent, and then wait When the resin is gelatinous, stop the solvent removal operation; C. If it is molten, lower the temperature to make it viscous.
  • Comparative example 1 The sun-proof and reflective coating in the experimental example is not added, and the others are consistent with the experimental example.
  • Comparative example 2 The nano sunscreen particles in the experimental example were not added, and the others were consistent with the experimental example.
  • Comparative example 3 instead of adding the alkyd resin in the embodiment, the polyester fiber is placed in the padding machine, immersed in the nano-sunscreen particle liquid, and the nano-sunscreen particles are micro-nano pressed on the poly In the structural surface of the ester fiber, the polyester fiber covered with nano sunscreen particles is formed after drying, and the others are consistent with the experimental example.
  • Comparative example 4 Modify the spiral groove in the experimental example to a rough structure with many bumps on the surface, and the others are consistent with the experimental example.
  • Comparative Example 5 The modified hemp fiber in the experimental example was changed to hemp fiber, and the others were consistent with the experimental example.
  • Example 1 The double-sided thermostatic fabrics of Example 1 and Comparative Examples 1-5 were tested for solar reflectance and emissivity to reflect their cooling effect.
  • the double-sided constant temperature fabrics of Example 1 and Comparative Examples 1-5 are tested for air permeability.
  • the specific steps are: use an air permeability tester, adopt a constant pressure difference measurement flow method, and clamp the sample in the air permeability tester Above, adjust the pressure so that a constant pressure difference is formed on both sides of the sample, and measure the air flow rate vertically passing through a given area of the sample within a certain period of time to obtain the air permeability (L/h) of different double-sided constant temperature fabrics.
  • the constant temperature double-sided fabric can be mass-produced.
  • the fabric can be cooled by radiation heat dissipation and one-way moisture transfer when it is hot, and can be cooled by Heat reflection realizes heat preservation, which can be applied to the manufacture of clothing for human body temperature regulation.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • General Chemical & Material Sciences (AREA)
  • Optics & Photonics (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Botany (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Artificial Filaments (AREA)
  • Woven Fabrics (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

La présente demande concerne un tissu à température constante double face, ainsi qu'un procédé de préparation associé. Le procédé consiste : à préparer des fibres réfléchissantes et thermo-isolantes (à savoir, des deuxièmes fibres), et à graver la surface des fibres au moyen d'une lumière laser pour obtenir des fibres hélicoïdales, de sorte que celles-ci soient dotées de bonnes propriétés de réflexion de lumière et de réflexion de chaleur, et pour les utiliser comme couche externe du tissu ; à préparer des fibres de chanvre modifiées de sorte à présenter de bonnes propriétés unidirectionnelles de conductivité d'humidité et de conductivité thermique, pour les utiliser comme couche interne du tissu ; et à combiner les couches interne et externe du tissu par un procédé d'assemblage de chaîne interne et de trame externe afin de former un tissu double face. La présente invention, par modification de la structure de surface des fibres et modification des fibres, permet de préparer un tissu apte à réaliser un refroidissement par dissipation de chaleur de rayonnement et transfert d'humidité unidirectionnel par temps chaud, et à réaliser une isolation thermique par réflexion de chaleur par temps froid. L'invention peut être appliquée à la fabrication de vêtements destinés à réguler la température corporelle humaine, et présente les avantages d'une préparation par lots à grande échelle, de faibles coûts et d'une haute efficacité de production.
PCT/CN2022/084895 2021-09-30 2022-04-01 Tissu à température constante double face et procédé de préparation associé WO2023050751A1 (fr)

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US18/271,276 US20240044071A1 (en) 2021-09-30 2022-04-01 Double-sided thermostatic fabric and preparation method thereof
EP22874152.6A EP4215657A4 (fr) 2021-09-30 2022-04-01 Tissu à température constante double face et procédé de préparation associé
JP2022581622A JP7465588B2 (ja) 2021-09-30 2022-04-01 両面恒温織物及びその製造方法

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