Application of profiled fiber in infrared radiation material and textile

Abstract

The embodiment of the invention provides application of a profiled fiber in an infrared radiation material and a textile. The cross section of the profiled fiber is polygonal, trilobal, four-lobal, cross-shaped, double-cross-shaped, I-shaped, E-shaped, C-shaped, V-shaped or hollow. The profiled fiber provided by one embodiment of the invention can be directly used as a high-performance infrared material, and can have a stable and lasting infrared function without adding an infrared additive.

Description

[0001] This application is a divisional application of Chinese invention patent application filed on July 4, 2018, with application number 201810724626.5 and invention title "Application of a Shaped Fiber in Infrared Radiation Materials and Textiles". Technical Field

[0002] This invention relates to a shaped fiber, specifically the application of a shaped fiber in infrared radiation materials and textiles. Background Technology

[0003] All objects radiate infrared radiation. As a type of benign light in nature, infrared radiation, with its good penetrating power, can reach deep into subcutaneous tissue to promote metabolism and growth in organisms. Therefore, it has become an ideal medium for functional fibers and is widely used in functional textiles for warmth and health. However, infrared functional fibers prepared under current technology suffer from problems such as a yellowish fiber color, decreased fiber mechanical strength, increased fiber surface roughness, leakage of infrared additives, and low industrial production efficiency, which hinder the promotion and application of high-end products.

[0004] Currently, the preparation methods for infrared functional fibers mainly focus on blend spinning and coating methods. Blending spinning is the most commonly used method for preparing infrared functional fibers. For example, Chinese Patent Publication No. CN105220263A, published on January 6, 2016, discloses a method for preparing far-infrared polyester fibers. This invention uses far-infrared modified attapulgite as a far-infrared additive, mixes it with purified terephthalic acid, ethylene glycol and a catalyst, and then carries out an esterification polycondensation reaction to synthesize far-infrared modified polyester masterbatch. Then, far-infrared polyester fibers are prepared by melt spinning and post-processing using the modified masterbatch as raw material.

[0005] Chinese Patent Publication No. CN102926222A, published on February 13, 2013, discloses a method for preparing far-infrared textiles by injection. This invention uses a syringe to directly inject far-infrared ceramic micro powder additives into polyamide melt, and then prepares nylon fibers with far-infrared functions.

[0006] Chinese Patent Publication No. CN102776600B, published on December 11, 2013, discloses a method for preparing high-efficiency far-infrared nylon fiber. The invention synthesizes a magnesium-aluminum composite oxide (MMO) far-infrared additive through co-precipitation and high-temperature calcination. Then, the additive is blended and granulated with polyamide 6 chips to prepare far-infrared polyamide 6 masterbatch. Finally, far-infrared nylon fiber is obtained by melt spinning.

[0007] Chinese Patent Publication No. CN1208507C, published on June 29, 2005, discloses far-infrared radiating hollow three-dimensional crimped polyester fiber and its manufacturing method. The invention uses titanate coupling agent and surfactant to perform dry surface treatment on inorganic far-infrared ultrafine materials, then blends the treated far-infrared additives with polyester carrier to prepare far-infrared masterbatch, and then mixes the far-infrared masterbatch with ordinary polyester chips and performs hollow spinning and post-treatment to obtain far-infrared radiating hollow three-dimensional crimped polyester fiber.

[0008] The above examples of preparing infrared functional fibers using the blending spinning method are relatively cumbersome and suffer from poor compatibility and dispersibility between infrared additives and fiber-forming polymers, as well as difficulties in spinning. There are also numerous reports on preparing infrared functional fibers using the coating method. For example, Chinese Patent Publication No. CN 106120012A, published on November 16, 2016, discloses a self-heating polyester fiber and its preparation method. This invention prepares a heating aid for spinning by mixing far-infrared ceramic powder, inorganic heating powder, a curing crosslinking agent, and a diluent, and then uniformly sprays this heating aid onto the surface of polyester precursor yarn to obtain the self-heating polyester fiber.

[0009] Chinese Patent Publication No. CN104695227A, published on June 10, 2015, discloses a production process for far-infrared cotton fibers. The invention involves mixing far-infrared ceramic powder with resin adhesive, crosslinking agent, dispersion liquid, etc. to form a far-infrared coating mixture, which is then coated on the surface of the treated original fibers to obtain far-infrared cotton fibers.

[0010] Chinese Patent Publication No. CN101606808B, published on July 18, 2012, discloses a far-infrared thermal blanket. The invention uses a finishing agent prepared by mixing far-infrared ceramic powder, adhesives, and additives in a specific ratio to impregnate, coat, and spray natural fibers, thereby producing far-infrared fibers.

[0011] Although the coating method for preparing infrared functional fibers has the advantages of simple process and applicability to various natural and synthetic fibers, the poor water resistance of the coating method itself makes it difficult to maintain the infrared function of the infrared fibers in the long term. Summary of the Invention

[0012] A primary objective of this invention is to provide an application of irregularly shaped fibers in infrared radiation materials, wherein the cross-sectional shape of the irregularly shaped fibers is polygonal, trilobal, tetralobal, cross-shaped, double cross-shaped, I-shaped, mountain-shaped, C-shaped, V-shaped, or hollow.

[0013] According to one embodiment of the present invention, the cross-sectional shape of the irregular fiber is polygonal, I-shaped, mountain-shaped, C-shaped, or V-shaped.

[0014] According to one embodiment of the present invention, the cross-sectional shape of the irregular fiber is polygonal.

[0015] According to one embodiment of the present invention, the polygon is a triangle, quadrilateral, pentagon or hexagon.

[0016] According to one embodiment of the present invention, the cross-sectional shape of the irregular fiber is triangular.

[0017] According to one embodiment of the present invention, the hollow shape is a single hollow shape or a multi-hollow shape.

[0018] According to one embodiment of the present invention, the single hollow shape is a circular hollow shape, a triangular hollow shape, a quadrilateral hollow shape, a pentagonal hollow shape, or a hexagonal hollow shape, and the shape of the hollow hole is circular or polygonal.

[0019] According to one embodiment of the present invention, the shaped fiber is obtained by spinning using polymer masterbatch as raw material.

[0020] According to one embodiment of the present invention, the polymer masterbatch includes one or more of polyethylene terephthalate, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polyamide 6, polyamide 66, polyamide 56, polyamide 1010, polypropylene, polyacrylonitrile, polyvinyl chloride, polyvinyl alcohol formaldehyde, and polyurethane.

[0021] According to one embodiment of the present invention, the polymer masterbatch includes one or more of polyamide 56, polyamide 66 and polyamide 6, and the profiled fiber is a fully drawn filament with a triangular cross-sectional shape.

[0022] According to one embodiment of the present invention, the polymer masterbatch further includes additives, including infrared additives and / or matting agents.

[0023] According to one embodiment of the present invention, the shaped fiber is a short fiber, a semi-pre-oriented filament, a pre-oriented filament, a highly oriented filament, a fully oriented filament, an unstretched filament, a stretched filament, a fully stretched filament, a conventional textured filament, a stretched textured filament, or an air-textured filament.

[0024] One embodiment of the present invention further provides the application of irregularly shaped fibers in textiles.

[0025] According to one embodiment of the present invention, the textiles include thermal insulation products and health care products.

[0026] According to one embodiment of the present invention, the textile is thermal underwear or down filling.

[0027] The irregularly shaped fiber of one embodiment of the present invention can be directly used as a high-performance infrared material, and can have stable and long-lasting infrared function without the addition of infrared additives. Detailed Implementation

[0028] Typical embodiments embodying the features and advantages of the invention will be described in detail in the following description. It should be understood that the invention can have various variations in different embodiments without departing from the scope of the invention, and the description herein is for illustrative purposes only and not intended to limit the invention.

[0029] One embodiment of the present invention provides the application of irregularly shaped fibers in infrared materials, particularly infrared radiation materials. The shape of the irregularly shaped fibers can be polygonal, trilobal, tetralobal, cross-shaped, double cross-shaped, I-shaped, mountain-shaped, C-shaped, V-shaped, or hollow.

[0030] In this invention, irregularly shaped fibers with cross-sections of polygonal, trilobal, quadrilobal, cross-shaped, double cross-shaped, I-shaped, mountain-shaped, C-shaped, and V-shaped all refer to irregularly shaped cross-section fibers (non-hollow).

[0031] In one embodiment of the present invention, the polygon can be a triangle, quadrilateral, pentagon, hexagon, etc.

[0032] In one embodiment of the present invention, the hollow fiber can be single-hollow or multi-hollow. Multi-hollow fiber refers to a fiber with a circular or polygonal outer cross-section, but with multiple circular or polygonal hollow pores.

[0033] In one embodiment of the present invention, the hollow fiber can be a single hollow fiber, such as a circular hollow fiber, a triangular hollow fiber, a quadrilateral hollow fiber, a pentagonal hollow fiber, or a hexagonal hollow fiber, and the shape of the hollow pores in the aforementioned single hollow fiber is circular or polygonal.

[0034] In this invention, the principles of reflection and refraction of light propagating in a medium are utilized. An irregularly shaped fiber cross-section is used to increase the optical path of infrared radiation within the fiber, thereby improving its infrared performance. Furthermore, theoretical simulations combined with Kirchhoff's laws of thermal radiation indicate that fibers with irregularly shaped cross-sections also show a significant improvement in infrared radiation.

[0035] In one embodiment of the present invention, irregularly shaped fibers can be directly used as high-performance infrared materials, possessing stable and long-lasting infrared functionality without the need for infrared additives. This maintains the original mechanical properties of the fibers while solving the problems of environmental pollution and cumbersome processes associated with using infrared additives.

[0036] In one embodiment of the present invention, polymer masterbatch is used as raw material, and irregularly shaped fibers with corresponding cross-sections are obtained by passing through a spinneret with irregularly shaped holes.

[0037] The shape of the spinneret orifice (spinneret hole) matches the shape of the fiber produced. For example, it can be trilobal, tetralobal, cross-shaped, double cross-shaped, I-shaped, mountain-shaped, C-shaped, V-shaped, triangular, quadrilateral, pentagonal, hexagonal, circular single hollow, circular multi-hollow, triangular single hollow, triangular multi-hollow, quadrilateral hollow, etc.

[0038] The irregularly shaped fiber of one embodiment of the present invention has different degrees of infrared emissivity and surface gloss depending on the different cross-sectional shapes of the fiber, which can meet the requirements of different application fields for infrared fiber performance.

[0039] In one embodiment of the present invention, the gloss of the irregularly shaped fiber is glossy, semi-dull, or dull, preferably glossy.

[0040] In one embodiment of the present invention, the specific shapes of the irregular fibers are obtained based on the theory of light reflection and refraction, and the spinneret orifices of each shape are either the same as those in the prior art, such as trilobal or triangular, or made based on the same principle as the prior art.

[0041] In this invention, there are no limitations on other parameters of the spinning process. For example, the spinning process can be melt spinning, dry spinning, wet spinning, or dry-wet spinning, but is not limited to the above methods.

[0042] In this invention, there are no limitations on other parameters of the fiber. For example, the shaped fiber can be a short fiber or a filament; the filament can be, for example, a semi-pre-oriented filament, a pre-oriented filament, a highly oriented filament, a fully oriented filament, an undrawn filament, a drawn filament, a fully drawn filament, a conventional textured filament, a drawn textured filament, or an air-textured filament, preferably a fully drawn filament (FDY).

[0043] The polymer masterbatch can be polyethylene terephthalate, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polyamide 6, polyamide 66, polyamide 56, polyamide 1010, polypropylene, polyacrylonitrile, polyvinyl chloride, polyvinyl alcohol formaldehyde, polyurethane, etc., preferably polyamide, such as polyamide 6, polyamide 56, and polyamide 66.

[0044] The method of one embodiment of the present invention can directly use polymer masterbatch as infrared special functional material after spinning into profiled fibers, without the need for infrared additives. This method is not only simple, low-cost, environmentally friendly, and suitable for industrial production, but also overcomes the relatively complex process of preparing infrared fibers by blend spinning and the disadvantages of coating methods such as poor durability and additive leakage. At the same time, it has the advantages of one-step process, low cost, environmental friendliness, and simple process.

[0045] In one embodiment of the present invention, the irregularly shaped fiber contains no infrared additives and its infrared function has no obvious time-limited effect, and is stable and long-lasting.

[0046] In one embodiment of the present invention, infrared additives, matting agents, stabilizers, etc. may be added to the polymer masterbatch and then spun to produce profiled fibers, so as to change the surface gloss of the fibers and at the same time enhance the infrared function of the infrared fibers.

[0047] In one embodiment of the present invention, the infrared additive may be mullite, cordierite, zirconium carbide, silicon dioxide, magnesium oxide, etc.

[0048] In one embodiment of the present invention, the matting agent may be silica, silicon dioxide, titanium dioxide, etc.

[0049] The irregularly shaped fiber of one embodiment of the present invention, used as an infrared material, has the advantages of simple preparation process, low cost, no infrared additives, and green and environmentally friendly. Moreover, the fiber has excellent infrared functional stability and durability, and is suitable for large-scale industrial production.

[0050] The irregularly shaped fiber of one embodiment of the present invention can be used in textiles, such as thermal underwear, down filling, sports and medical and health functional textiles.

[0051] The irregularly shaped fiber used as an infrared material according to one embodiment of the present invention will be further described below with reference to specific embodiments.

[0052] Example 1

[0053] a. Conventional polyethylene terephthalate masterbatch is fed into a spinning box at 225°C via a screw. After being melt-metered, it is melt-extruded through a trilobal spinneret and wound at a speed of 5500 m / min under constant temperature conditions. Then, the wound yarn is stretched and textured at a stretching temperature of 120°C and a stretching ratio of 4.5 times to obtain a bright trilobal infrared functional polyethylene terephthalate stretch deformed DTY filament. b. Take the stretched and deformed DTY filaments of the above-obtained light trilobal infrared functional polyethylene terephthalate and prepare a conventional four-sided structure fabric using knitting technology; conduct emissivity and irradiation temperature rise tests according to the testing and evaluation standards for far-infrared performance of textiles (test standard is GB / T 30127-2013), and find that its emissivity is 0.84 and its irradiation temperature rise is 1.4℃.

[0054] Example 2

[0055] a. Conventional polyamide 6 masterbatch is fed into a spinning box at 225°C via a screw. After being melted and metered, it is melt-extruded through a trilobal spinneret and wound at a speed of 5500 m / min under constant temperature conditions. Then, the wound yarn is stretched and textured at a stretching temperature of 120°C and a stretching ratio of 4.5 times to obtain bright trilobal infrared functional polyamide 6 stretch deformed DTY filament. b. Take the stretched and deformed DTY filament of the above-obtained light trilobal infrared functional polyamide 6 and prepare a conventional four-sided structure fabric using knitting technology; conduct emissivity and irradiation temperature rise tests according to the testing and evaluation standards for far-infrared performance of textiles (test standard is GB / T30127-2013), and find that its emissivity is 0.88 and its irradiation temperature rise is 1.6℃.

[0056] Example 3

[0057] a. Conventional polypropylene masterbatch is fed to a spinning box at 225°C via a screw. After being melted and metered, it is melt-extruded through a trilobal spinneret and wound at a speed of 5500 m / min under constant temperature conditions. Then, the wound filament is stretched and textured at a drawing temperature of 120°C and a drawing ratio of 4.5 times to obtain bright trilobal infrared functional polypropylene stretch deformable DTY filament. b. Take the stretched and deformed DTY filament of the above-obtained light trilobal infrared functional polypropylene and prepare a conventional four-sided structure fabric using knitting technology; conduct emissivity and irradiation temperature rise tests according to the testing and evaluation standards for far-infrared performance of textiles (test standard is GB / T 30127-2013), and find that its emissivity is 0.83 and its irradiation temperature rise is 1.1℃.

[0058] Example 4

[0059] a. Conventional polyvinyl alcohol formal masterbatch is conveyed to a spinning box at a temperature of 225°C via a screw. After being melted and metered, it is melt-extruded through a trilobal spinneret and wound at a winding speed of 5500 m / min under constant temperature conditions. Then, the wound yarn is stretched and textured at a drawing temperature of 120°C and a drawing ratio of 4.5 times to obtain bright trilobal infrared functional polyvinyl alcohol formal stretch deformable DTY filament. b. Take the stretched and deformed DTY filament of the above-obtained light trilobal infrared functional polyvinyl alcohol formaldehyde and prepare a conventional four-sided structure fabric using knitting technology; conduct emissivity and irradiation temperature rise tests according to the testing and evaluation standards for far-infrared performance of textiles (test standard is GB / T 30127-2013), and find that its emissivity is 0.82 and its irradiation temperature rise is 1.2℃.

[0060] Example 5

[0061] a. Conventional poly(propylene terephthalate) masterbatch is conveyed to a spinning box at 195°C via a screw. After being melt-metered, it is melt-extruded through a cross-shaped spinneret and wound at a winding speed of 1500 m / min under constant temperature conditions. Then, the wound yarn is drawn at a drawing temperature of 120°C and a drawing ratio of 1.5 times to obtain a bright cross-shaped infrared functional poly(propylene terephthalate) pre-oriented POY filament. b. Take the above-obtained light-cross-shaped infrared functionalized polypropylene terephthalate (POY) pre-oriented filament and prepare a conventional four-sided structure fabric using knitting technology; conduct emissivity and irradiation temperature rise tests according to the testing and evaluation standard for far-infrared performance of textiles (test standard is GB / T 30127-2013), and find that its emissivity is 0.83 and its irradiation temperature rise is 1.2℃.

[0062] Example 6

[0063] a. Conventional poly(propylene terephthalate) masterbatch is mixed with 0.5% by mass of matting agent and conveyed to a spinning box at 195°C via a screw. After melt metering, it is melt-extruded through a cross-shaped spinneret and wound at a winding speed of 1500 m / min under constant temperature conditions. Then, the wound yarn is drawn at a drawing temperature of 120°C and a drawing ratio of 1.5 times to obtain semi-matte cross-shaped infrared functional poly(propylene terephthalate) pre-oriented POY filament. b. Take the semi-dull cross-shaped infrared functional poly(propylene terephthalate) pre-oriented POY filaments obtained above and prepare conventional four-sided structure fabrics using knitting technology; conduct emissivity and irradiation temperature rise tests according to the testing and evaluation standards for far-infrared performance of textiles (test standard is GB / T 30127-2013), and find that its emissivity is 0.79 and its irradiation temperature rise is 1.1℃.

[0064] Example 7

[0065] a. Conventional poly(propylene terephthalate) masterbatch is mixed with 2% by mass of matting agent and conveyed to a spinning box at 195°C via a screw. After melt metering, the mixture is melt-extruded through a cross-shaped spinneret and wound at a speed of 1500 m / min under constant temperature conditions. The wound yarn is then drawn at a drawing temperature of 120°C and a drawing ratio of 1.5 times to obtain matte cross-shaped infrared functional poly(propylene terephthalate) pre-oriented POY filament. b. Take the above-obtained matte cross-shaped infrared functional poly(propylene terephthalate) POY pre-oriented filament and prepare a conventional four-sided structure fabric using knitting technology; conduct emissivity and irradiation temperature rise tests according to the testing and evaluation standard for far-infrared performance of textiles (test standard is GB / T 30127-2013), and find that its emissivity is 0.72 and its irradiation temperature rise is 0.8℃.

[0066] Example 8

[0067] a. Conventional polybutylene terephthalate masterbatch is conveyed to a spinning box at 185°C via a screw. After being melt-metered, it is melt-extruded through a double cross-shaped spinneret and wound at a winding speed of 2000 m / min under constant temperature conditions. Then, the wound yarn is drawn at a drawing temperature of 110°C and a drawing ratio of 2.5 times to obtain bright double cross-shaped infrared functional polybutylene terephthalate semi-preoriented MOY filament. b. Take the above-obtained bright double cross-shaped infrared functional polybutylene terephthalate semi-preoriented MOY filament and prepare a conventional four-sided structure fabric using knitting technology; conduct emissivity and irradiation temperature rise tests according to the testing and evaluation standards for far-infrared performance of textiles (test standard is GB / T 30127-2013), and find that its emissivity is 0.81 and its irradiation temperature rise is 1.2℃.

[0068] Example 9

[0069] a. Conventional polybutylene terephthalate masterbatch is conveyed to a spinning box at 185°C via a screw. After melting and metering, it is melt-extruded through a double cross-shaped spinneret. The filament bundle is stretched and shaped under constant temperature conditions at a stretching temperature of 125°C, a stretching ratio of 1.5 times, and a setting temperature of 90°C. Then, it is wound at a winding speed of 5000 m / min to obtain bright double cross-shaped infrared functional polybutylene terephthalate highly oriented HOY filament. b. Take the above-obtained bright double cross-shaped infrared functional polybutylene terephthalate highly oriented HOY filament and prepare a conventional four-sided structure fabric using knitting technology; conduct emissivity and irradiation temperature rise tests according to the testing and evaluation standards for far-infrared performance of textiles (test standard is GB / T 30127-2013), and find that its emissivity is 0.83 and its irradiation temperature rise is 1.1℃.

[0070] Example 10

[0071] a. Conventional polybutylene terephthalate masterbatch is fed to a spinning box at a temperature of 185°C via a screw. After being melt-metered, it is melt-extruded through a double cross-shaped spinneret. Under constant temperature conditions, it is wound and post-treated to obtain unstretched UDY filaments of bright double cross-shaped infrared functional polybutylene terephthalate. b. Take the unstretched UDY filament of the above-obtained bright double cross-shaped infrared functional polybutylene terephthalate and prepare a conventional four-sided structure fabric using knitting technology; conduct emissivity and irradiation temperature rise tests according to the testing and evaluation standards for far-infrared performance of textiles (test standard is GB / T 30127-2013), and find that its emissivity is 0.76 and its irradiation temperature rise is 0.8℃.

[0072] Example 11

[0073] a. Conventional polybutylene terephthalate masterbatch is conveyed to a spinning box at 185°C via a screw. After melting and metering, it is melt-extruded through a double cross-shaped spinneret. The filament bundle is stretched and shaped under constant temperature conditions at a stretching temperature of 90°C, a stretching ratio of 2.0 times, and a setting temperature of 100°C. Then, it is wound at a winding speed of 3000 m / min to obtain bright double cross-shaped infrared functional polybutylene terephthalate stretched DY filament. b. Take the stretched DY filament of the above-obtained bright double cross-shaped infrared functional polybutylene terephthalate and prepare a conventional four-sided structure fabric using knitting technology; conduct emissivity and irradiation temperature rise tests according to the testing and evaluation standards for far-infrared performance of textiles (test standard is GB / T 30127-2013), and find that its emissivity is 0.79 and its irradiation temperature rise is 0.9℃.

[0074] Example 12

[0075] a. Conventional polybutylene terephthalate masterbatch is conveyed to a spinning box at 185°C via a screw. After melting and metering, it is melt-extruded through a double cross-shaped spinneret. The filament bundle is stretched and shaped under constant temperature conditions at a stretching temperature of 80°C, a stretching ratio of 2.5 times, and a setting temperature of 105°C. Then, it is wound at a winding speed of 5000 m / min to obtain a bright double cross-shaped infrared functional polybutylene terephthalate fully stretched FDY filament. b. Take the fully stretched FDY filament of the above-obtained bright double cross-shaped infrared functional polybutylene terephthalate and prepare a conventional four-sided structure fabric using knitting technology; conduct emissivity and irradiation temperature rise tests according to the testing and evaluation standards for far-infrared performance of textiles (test standard is GB / T 30127-2013), and find that its emissivity is 0.84 and its irradiation temperature rise is 1.2℃.

[0076] Example 13

[0077] a. A conventional polyurethane masterbatch is mixed with 0.5% by mass of a matting agent to form a spinning solution. The solution is then extruded through a triangular spinneret using dry spinning technology to form nascent fibers. After being processed by washing, stretching, crimping, drying and oiling, semi-matte triangular infrared functional polyurethane air-deformed ATY filaments are obtained. b. Take the air-deformed ATY filament of the semi-dull triangular infrared functional polyurethane obtained above and prepare a conventional four-sided structure fabric using knitting technology; conduct emissivity and irradiation temperature rise tests according to the testing and evaluation standards for far-infrared performance of textiles (test standard is GB / T30127-2013), and find that its emissivity is 0.90 and its irradiation temperature rise is 1.9℃.

[0078] Example 14

[0079] a. A conventional polyurethane masterbatch is mixed with 0.5% by mass of a matting agent to form a spinning solution. The solution is then extruded through a quadrilateral spinneret using dry spinning technology to form nascent fibers. After being processed by washing, stretching, crimping, drying and oiling, semi-matte quadrilateral infrared functional polyurethane air-deformed ATY filaments are obtained. b. Take the air-deformed ATY filament of the semi-dull quadrilateral infrared functional polyurethane obtained above and prepare a conventional four-sided structure fabric using knitting technology; conduct emissivity and irradiation temperature rise tests according to the testing and evaluation standards for far-infrared performance of textiles (test standard is GB / T30127-2013), and find that its emissivity is 0.87 and its irradiation temperature rise is 1.7℃.

[0080] Example 15

[0081] a. A conventional polyurethane masterbatch is mixed with 0.5% by mass of a matting agent to form a spinning solution. The solution is then extruded through a pentagonal spinneret using dry spinning technology to form nascent fibers. After being processed by washing, stretching, crimping, drying and oiling, semi-matte pentagonal infrared functional polyurethane air-deformed ATY filaments are obtained. b. Take the air-deformed ATY filament of the semi-dull pentagonal infrared functional polyurethane obtained above and prepare a conventional four-sided structure fabric using knitting technology; conduct emissivity and irradiation temperature rise tests according to the testing and evaluation standards for far-infrared performance of textiles (test standard is GB / T30127-2013), and find that its emissivity is 0.83 and its irradiation temperature rise is 1.5℃.

[0082] Example 16

[0083] a. A conventional polyurethane masterbatch is mixed with 0.5% by mass of a matting agent to form a spinning solution. The solution is then extruded through hexagonal spinnerets using dry spinning technology to form nascent fibers. After being processed by washing, stretching, crimping, drying and oiling, semi-matte hexagonal infrared functional polyurethane air-deformed ATY filaments are obtained. b. Take the air-deformed ATY filament of the semi-dull hexagonal infrared functional polyurethane obtained above and prepare a conventional four-sided structure fabric using knitting technology; conduct emissivity and irradiation temperature rise tests according to the testing and evaluation standards for far-infrared performance of textiles (test standard is GB / T30127-2013), and find that its emissivity is 0.81 and its irradiation temperature rise is 1.4℃.

[0084] Example 17

[0085] a. A conventional polyurethane masterbatch is mixed with 0.5% by mass of a matting agent to form a spinning solution. The solution is then extruded through a zigzag spinneret using dry spinning technology to form nascent fibers. After being processed by washing, stretching, crimping, drying and oiling, semi-matte zigzag infrared functional polyurethane air-deformed ATY filaments are obtained. b. Take the air-deformed ATY filament of the semi-dull, mountain-shaped infrared functional polyurethane obtained above and prepare a conventional four-sided structure fabric using knitting technology; conduct emissivity and irradiation temperature rise tests according to the testing and evaluation standards for far-infrared performance of textiles (test standard is GB / T30127-2013), and find that its emissivity is 0.78 and its irradiation temperature rise is 1.4℃.

[0086] Example 18

[0087] a. A conventional polyurethane masterbatch is mixed with 0.5% by mass of a matting agent to form a spinning solution. The solution is then extruded through an I-shaped spinneret using dry spinning technology to form nascent fibers. After being processed by washing, stretching, crimping, drying and oiling, semi-matte I-shaped infrared functional polyurethane air-deformed ATY filaments are obtained. b. Take the air-deformed ATY filament of the semi-dull I-shaped infrared functional polyurethane obtained above and prepare a conventional four-sided structure fabric using knitting technology; conduct emissivity and irradiation temperature rise tests according to the testing and evaluation standards for far-infrared performance of textiles (test standard is GB / T30127-2013), and find that its emissivity is 0.78 and its irradiation temperature rise is 1.5℃.

[0088] Example 19

[0089] a. A conventional polyurethane masterbatch is mixed with 0.5% by mass of a matting agent to form a spinning solution. The solution is then extruded through a C-shaped spinneret using dry spinning technology to form nascent fibers. After being processed by washing, stretching, crimping, drying and oiling, semi-matte C-shaped infrared functional polyurethane air-deformed ATY filaments are obtained. b. Take the air-deformed ATY filament of the semi-dull C-shaped infrared functional polyurethane obtained above and prepare a conventional four-sided structure fabric using knitting technology; conduct emissivity and irradiation temperature rise tests according to the testing and evaluation standards for far-infrared performance of textiles (test standard is GB / T30127-2013), and find that its emissivity is 0.76 and its irradiation temperature rise is 1.2℃.

[0090] Example 20

[0091] a. A conventional polyurethane masterbatch is mixed with 0.5% by mass of a matting agent to form a spinning solution. The solution is then extruded through a V-shaped spinneret using dry spinning technology to form nascent fibers. After being processed by washing, stretching, crimping, drying and oiling, semi-matte V-shaped infrared functional polyurethane air-deformed ATY filaments are obtained. b. Take the air-deformed ATY filament of the semi-dull V-shaped infrared functional polyurethane obtained above and prepare a conventional four-sided structure fabric using knitting technology; conduct emissivity and irradiation temperature rise tests according to the testing and evaluation standards for far-infrared performance of textiles (test standard is GB / T30127-2013), and find that its emissivity is 0.74 and its irradiation temperature rise is 1.0℃.

[0092] Example 21

[0093] a. A conventional polyurethane masterbatch is mixed with 0.5% by mass of a matting agent to form a spinning solution. The solution is then extruded through a hexagonal hollow (hexagonal cross-section, single hollow, circular holes) spinneret using dry spinning technology to form nascent fibers. After being processed by washing, stretching, crimping, drying, and oiling, semi-matte hexagonal hollow infrared functional polyurethane air-deformed ATY filaments are obtained. b. Take the air-deformed ATY filament of the semi-dull hexagonal hollow infrared functional polyurethane obtained above and prepare a conventional four-sided structure fabric using knitting technology; conduct emissivity and irradiation temperature rise tests according to the testing and evaluation standards for far-infrared performance of textiles (test standard is GB / T30127-2013), and find that its emissivity is 0.72 and its irradiation temperature rise is 0.9℃.

[0094] Example 22

[0095] a. A conventional polyurethane masterbatch is mixed with 0.5% by mass of a matting agent to form a spinning solution. The solution is then extruded through a pentagonal hollow (pentagonal cross-section, single hollow, circular holes) spinneret using dry spinning technology to form nascent fibers. After being processed by washing, stretching, crimping, drying, and oiling, semi-matte pentagonal hollow infrared functional polyurethane air-deformed ATY filaments are obtained. b. Take the air-deformed ATY filament of the semi-dull pentagonal hollow infrared functional polyurethane obtained above and prepare a conventional four-sided structure fabric using knitting technology; conduct emissivity and irradiation temperature rise tests according to the testing and evaluation standards for far-infrared performance of textiles (test standard is GB / T30127-2013), and find that its emissivity is 0.71 and its irradiation temperature rise is 1.0℃.

[0096] Example 23

[0097] a. A conventional polyurethane masterbatch is mixed with 0.5% by mass of a matting agent to form a spinning solution. The solution is then extruded through a quadrilateral hollow (quadrilateral cross-section, single hollow, circular holes) spinneret using dry spinning technology to form nascent fibers. After being processed by washing, stretching, crimping, drying, and oiling, semi-matte quadrilateral hollow infrared functional polyurethane air-deformed ATY filaments are obtained. b. Take the air-deformed ATY filament of the semi-dull quadrilateral hollow infrared functional polyurethane obtained above and prepare a conventional four-sided structure fabric using knitting technology; conduct emissivity and irradiation temperature rise tests according to the testing and evaluation standards for far-infrared performance of textiles (test standard is GB / T30127-2013), and find that its emissivity is 0.64 and its irradiation temperature rise is 0.7℃.

[0098] Example 24

[0099] a. A conventional polyurethane masterbatch is mixed with 0.5% by mass of a matting agent to form a spinning solution. The solution is then extruded through a triangular hollow spinneret (triangular cross-section, single hollow, and circular holes) using dry spinning technology to form nascent fibers. After being processed by washing, stretching, crimping, drying, and oiling, semi-matte triangular hollow infrared functional polyurethane air-deformed ATY filaments are obtained. b. Take the air-deformed ATY filament of the semi-dull triangular hollow infrared functional polyurethane obtained above and prepare a conventional four-sided structure fabric using knitting technology; conduct emissivity and irradiation temperature rise tests according to the testing and evaluation standards for far-infrared performance of textiles (test standard is GB / T30127-2013), and find that its emissivity is 0.63 and its irradiation temperature rise is 0.6℃.

[0100] Example 25

[0101] a. A conventional polyurethane masterbatch is mixed with 0.5% by mass of a matting agent to form a spinning solution. The solution is then extruded through a circular hollow spinneret (circular cross-section, single hollow, and circular holes) using dry spinning technology to form nascent fibers. After being processed by washing, stretching, crimping, drying, and oiling, semi-matte circular hollow infrared functional polyurethane air-deformed ATY filaments are obtained. b. Take the air-deformed ATY filament of the semi-dull circular hollow infrared functional polyurethane obtained above and prepare a conventional four-sided structure fabric using knitting technology; conduct emissivity and irradiation temperature rise tests according to the testing and evaluation standards for far-infrared performance of textiles (test standard is GB / T30127-2013), and find that its emissivity is 0.61 and its irradiation temperature rise is 0.6℃.

[0102] Example 26

[0103] a. A spinning solution is prepared by mixing conventional polyacrylonitrile masterbatch with 0.5% by mass of matting agent. The solution is then extruded through a four-lobed spinneret using a wet-dry spinning technique to form nascent fibers. After being processed by washing, stretching, crimping, drying and oiling, semi-matte four-lobed infrared functional polyacrylonitrile short fibers are obtained. b. Take the short fibers of the semi-dull four-lobed infrared functional polyacrylonitrile obtained above and spin them using a color spinning method. Prepare a conventional four-sided structure fabric using knitting technology. Test the emissivity and irradiation temperature rise according to the testing and evaluation standards for the far-infrared performance of textiles (test standard is GB / T 30127-2013). The emissivity is 0.82 and the irradiation temperature rise is 1.1℃.

[0104] Example 27

[0105] a. A spinning solution is prepared by mixing conventional polyacrylonitrile masterbatch, infrared additive silica and 0.5% by mass of matting agent. The solution is then extruded through a four-lobed spinneret using a wet-dry spinning technique to form nascent fibers. After washing, stretching, crimping, drying and oiling, reinforced semi-matte four-lobed infrared functional polyacrylonitrile short fibers are obtained. b. Take the short fibers of the enhanced semi-dull four-lobed infrared functional polyacrylonitrile obtained above and spin them using a color spinning method. Prepare a conventional four-sided structure fabric using knitting technology. Test the emissivity and irradiation temperature rise according to the testing and evaluation standards for the far-infrared performance of textiles (test standard is GB / T 30127-2013). The emissivity is 0.88 and the irradiation temperature rise is 1.4℃.

[0106] Example 28

[0107] a. A spinning solution is prepared by mixing conventional polyvinyl chloride masterbatch with 2% by mass of a matting agent. The solution is then extruded through a triangular hollow spinneret (triangular cross-section, single hollow, and circular holes) using wet spinning technology to form nascent fibers. After being processed by washing, stretching, crimping, drying, and oiling, short fibers of matte triangular hollow infrared functional polyvinyl chloride are obtained. b. Take the short fibers of the above-obtained extinction triangular hollow infrared functional polyvinyl chloride and spin them using a color spinning method. Prepare a conventional four-sided structure fabric using knitting technology. Test the emissivity and irradiation temperature rise according to the testing and evaluation standards for the far-infrared performance of textiles (test standard is GB / T 30127-2013). The emissivity is 0.70 and the irradiation temperature rise is 0.6℃.

[0108] Example 29

[0109] a. A spinning solution is prepared by mixing conventional polyvinyl chloride masterbatch, infrared additive magnesium oxide and 2% by mass of matting agent. The solution is then extruded through a triangular hollow spinneret (triangular cross-section, single hollow, and circular holes) using wet spinning technology to form nascent fibers. After washing, stretching, crimping, drying and oiling processes, short fibers of reinforced matting triangular hollow infrared functional polyvinyl chloride are obtained. b. Take the short fibers of the above-obtained enhanced extinction triangular hollow infrared functional polyvinyl chloride and spin them using a color spinning method. Prepare a conventional four-sided structure fabric using knitting technology. Test the emissivity and irradiation temperature rise according to the testing and evaluation standards for the far-infrared performance of textiles (test standard is GB / T 30127-2013). The emissivity is 0.74 and the irradiation temperature rise is 0.9℃.

[0110] Example 30

[0111] a. Conventional polyamide 56 masterbatch is fed into a spinning box at 270°C via a screw. After melting and metering, it is melt-extruded through a triangular spinneret. The filament bundle is stretched and shaped under constant temperature conditions at a stretching temperature of 80°C, a stretching ratio of 1.5 times, and a setting temperature of 115°C. Then, it is wound at a winding speed of 5500 m / min to obtain a fully stretched FDY filament of bright triangular infrared functional polyamide 56. b. Take the fully stretched FDY filament of the above-obtained triangular infrared functional polyamide 56 and prepare a conventional four-sided structure fabric using knitting technology; conduct emissivity and irradiation temperature rise tests according to the testing and evaluation standards for far-infrared performance of textiles (test standard is GB / T 30127-2013), and find that its emissivity is 0.93 and its irradiation temperature rise is 1.9℃.

[0112] Example 31

[0113] a. Conventional polyamide 66 masterbatch is fed into a spinning box at 260°C via a screw. After melting and metering, it is melt-extruded through triangular spinnerets. The filament bundle is stretched and shaped under constant temperature conditions at a stretching temperature of 110°C, a stretching ratio of 5.5 times, and a setting temperature of 120°C. Then, it is wound at a winding speed of 5000 m / min to obtain fully stretched FDY filaments of bright triangular infrared functional polyamide 66. b. Take the fully stretched FDY filament of the above-obtained triangular infrared functional polyamide 66 and prepare a conventional four-sided structure fabric using knitting technology; conduct emissivity and irradiation temperature rise tests according to the testing and evaluation standards for far-infrared performance of textiles (test standard is GB / T 30127-2013), and find that its emissivity is 0.94 and its irradiation temperature rise is 2.1℃.

[0114] Example 32

[0115] a. After mixing conventional polyamide 6 masterbatch with infrared additive zirconium carbide, the mixture is conveyed to a spinning box at a temperature of 240℃ via a screw. After melting and metering, the mixture is melt-extruded through triangular spinnerets. Under constant temperature conditions, the filament bundle is stretched and shaped at a stretching temperature of 100℃, a stretching ratio of 3.5 times, and a setting temperature of 115℃. Then, it is wound at a winding speed of 4000m / min to obtain fully stretched FDY filaments of reinforced bright triangular infrared functional polyamide 6. b. Take the fully stretched FDY filament of the enhanced light-triangular infrared functional polyamide 6 obtained above and prepare a conventional four-sided structure fabric using knitting technology; conduct emissivity and irradiation temperature rise tests according to the testing and evaluation standards for far-infrared performance of textiles (test standard is GB / T30127-2013), and find that its emissivity is 0.97 and its irradiation temperature rise is 2.4℃.

[0116] Comparative Example

[0117] a. A conventional polyurethane masterbatch is mixed with 0.5% by mass of a matting agent to form a spinning solution. The solution is then extruded through a circular spinneret using dry spinning technology to form nascent fibers. After being processed by washing, stretching, crimping, drying and oiling, semi-matte circular infrared functional polyurethane air-deformed ATY filaments are obtained. b. Take the air-deformed ATY filament of the semi-dull circular infrared functional polyurethane obtained above and prepare a conventional four-sided structure fabric using knitting technology; conduct emissivity and irradiation temperature rise tests according to the testing and evaluation standards for far-infrared performance of textiles (test standard is GB / T 30127-2013), and find that its emissivity is 0.55 and its irradiation temperature rise is 0.57℃.

[0118] Table 1 lists the parameters and characterization data of the fibers used in each embodiment and comparative example.

[0119] Table 1

[0120] Unless otherwise specified, the terms used in this invention have the meanings commonly understood by those skilled in the art.

[0121] The embodiments described in this invention are for illustrative purposes only and are not intended to limit the scope of protection of this invention. Those skilled in the art can make various other substitutions, changes and improvements within the scope of this invention. Therefore, this invention is not limited to the above embodiments, but is only defined by the claims.

Claims

1. Use of a profiled fiber in an infrared radiation material, wherein the profiled fiber has a triangular cross-sectional shape, and the profiled fiber does not contain an infrared additive.

2. The use according to claim 1, wherein the profiled fiber is prepared by spinning from a polymer masterbatch.

3. The use according to claim 2, wherein the polymer masterbatch comprises one or more of polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polyamide 6, polyamide 66, polyamide 56, polyamide 1010, polypropylene, polyacrylonitrile, polyvinyl chloride, polyvinyl formal, and polyurethane.

4. The use according to claim 2, wherein the polymer masterbatch comprises one or more of polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polyamide 56, polyamide 66, polyamide 6, polyamide 1010, and polyurethane.

5. The use according to claim 2, wherein the polymer masterbatch comprises one or more of polyamide 56, polyamide 66, polyamide 6, and polyurethane.

6. The use according to claim 2, wherein the polymer masterbatch further comprises an additive, the additive comprising a matting agent.

7. The use according to claim 1, wherein the profiled fiber is a staple fiber, a semi-preoriented filament, a pre-oriented filament, a highly oriented filament, a fully oriented filament, an unstretched filament, a stretched filament, a fully stretched filament, a conventional textured filament, a stretch textured filament, or an air textured filament.

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