Rare earth-based high-breathability wide-width cooling fiber fabric and preparation method thereof

Abstract

The application provides a rare earth-based high-breathable wide-width cooling fiber fabric and a preparation method thereof, and the method comprises the following steps: (1) rare earth functional materials and surface layer high polymer materials are respectively dried and uniformly mixed, and then rare earth heat insulation functional polymer fibers are obtained through melt extrusion and melt spinning; (2) cool feeling functional materials and inner layer high polymer materials are respectively dried and uniformly mixed, and then high cool feeling profile full-drawing fibers are obtained through melt extrusion and melt spinning; (3) the rare earth heat insulation functional polymer DTY fibers are prepared into functional fabrics with plain stitch through the weft and warp interlacing process, the high cool feeling profile full-drawing fibers are knitted into functional fabrics with double rib structure, and then the fiber fabric is prepared through double-sided connection process. The fabric has the functions of heat insulation, breathability, moisture absorption and sweat release, and cool feeling, can effectively reduce the surface temperature of the human body by 2-8 DEG C during outdoor travel in hot summer, and has a relatively comfortable cool feeling effect.

Description

Technical Field

[0001] This invention belongs to the field of textile weaving, and in particular relates to a rare earth-based high-breathability wide-width cooling fiber fabric and its preparation method. Background Technology

[0002] As living standards gradually improve, people are no longer satisfied with increasingly monotonous and repetitive living environments, and outdoor hiking is becoming increasingly popular. Therefore, internationally renowned outdoor brands have received more attention in recent years, and domestic brands are also focusing on developing outdoor apparel. Especially for summer outdoor activities, the professional requirements for clothing are becoming increasingly stringent. Outdoor clothing differs from everyday clothing, needing to provide different functions for different scenarios: warmth and windproofing in winter, and sun protection and sweat wicking in summer. However, it is difficult to concentrate all the necessary functions on a single fabric. Therefore, the need to develop functional fabrics for different seasons and application scenarios is becoming increasingly urgent. Based on the actual needs of summer outdoor hiking, this invention provides a fabric with good heat insulation, excellent breathability, and high moisture absorption and wicking properties. This fabric incorporates rare-earth nanomaterials with high reflectivity to the visible-near-infrared band of sunlight into the surface fibers, enabling it to reflect more than 87% of solar heat radiation, reducing the adhesion of solar heat to the fabric surface. Simultaneously, a heat-insulating layer is built into the inner layer of the fabric, and cooling mineral nanomaterials are added to enhance skin comfort. By adding functional components and designing the structure of the fabric, this fabric has excellent cooling and heat insulation properties. Compared with coated heat insulation fabrics, it has better breathability and comfort, and also reduces the functional degradation caused by coating peeling after repeated use or washing, thus having high economic value. Summary of the Invention

[0003] In view of this, the present invention aims to overcome the defects in the prior art and proposes a rare earth-based high-breathability wide-width cooling fiber fabric and its preparation method.

[0004] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0005] A method for preparing a rare earth-based, highly breathable, wide-width cooling fiber fabric includes the following steps:

[0006] (1) Preparation of rare earth thermal insulation functional polymer fiber: After drying the rare earth functional material and the surface polymer material respectively, they are mixed evenly and then melt extruded and melt spun to obtain rare earth thermal insulation functional polymer fiber.

[0007] (2) Preparation of high-absorption and heat-relieving profiled fully stretched fiber: The cooling functional material and the inner polymer material are dried separately and then mixed evenly. After melt extrusion and melt spinning, high-absorption and heat-relieving profiled fully stretched fiber is obtained.

[0008] (3) Preparation of high-breathable wide-width cooling fiber fabric: the rare earth functional polymer DTY fiber is prepared into a functional fabric with a plain stitch through a weft-knitting process, the high-sweat-absorbing and -discharging profile full-drawing fiber is knitted into a functional fabric with a double rib structure, and then a double-sided connection process is performed to obtain the rare earth-based high-breathable wide-width cooling fiber fabric.

[0009] Further, the rare earth functional material in step (1) is a high-entropy rare earth phosphate La x Ce y Y z Gd m Al n PO4, wherein x+y+z+m+n=1; the mass ratio of the rare earth functional material in step (1) to the surface layer high polymer material is 1-10:90-99.

[0010] Further, the high-entropy rare earth phosphate is prepared by a method comprising the following steps: dissolving lanthanum halide, cerium halide, yttrium halide, gadolinium halide and aluminum halide in deionized water, adding a diammonium hydrogen phosphate solution dropwise under stirring, continuing to stir and then heating to react, washing and drying the reaction product to obtain a precursor, and calcining the precursor to obtain the high-entropy rare earth phosphate.

[0011] Further, the molar ratio of the lanthanum halide, cerium halide, yttrium halide, gadolinium halide, and aluminum halide to the diammonium hydrogen phosphate is 1:1:1:1:1:5-6; the temperature of the calcination step is 800-1200℃, and the time is 4-6h.

[0012] Further, the cooling functional material in step (2) is at least one of jade powder, mica powder, pearl powder or medical stone; the particle size of the cooling functional material in step (2) is 200-500nm; the mass ratio of the cooling functional material in step (2) to the inner layer high polymer material is 1-10:90-99.

[0013] Further, the surface layer high polymer material in step (1) is at least one of PET, PBT, PTT, PLA or PA; the inner layer high polymer material in step (2) is at least one of PE, PTFE, EVA or PMMA.

[0014] Further, the temperature of the melt extrusion step in step (1) is 150-350℃, and the extrusion speed is 100-300r / min; the temperature of the melt spinning step in step (1) is 200-350℃, and the winding speed is 1800-5000m / min.

[0015] Further, the temperature of the melt extrusion step in step (2) is 150-350 DEG C, and the extrusion speed is 100-300 r / min; the temperature of the melt spinning step in step (2) is 200-350 DEG C, and the winding speed is 1800-5000 m / min.

[0016] Further, the cross section of the high-sweating cooling profile full-drawing fiber in step (2) is a profile structure; the cross section of the high-sweating cooling profile full-drawing fiber in step (2) is at least one of a cross, double cross, leaf, or trilobal shape.

[0017] A rare earth-based high-breathability wide-width cooling fiber fabric prepared by the preparation method.

[0018] Compared with the prior art, the present application has the following advantages:

[0019] The preparation method of the rare earth-based high-breathability wide-width cooling fiber fabric first selects, compounding and blending rare earth functional materials and surface layer high polymer materials to prepare a rare earth heat insulation functional polymer DTY fiber with high infrared reflection and emission function, which has strong reflection ability to sunlight radiation with a wavelength of 350-2500 nm, and is arranged on the surface layer of the fabric through interlacing of warp and weft yarns to reduce the absorption of solar radiation energy; but its thermal conductivity is relatively high, and adding some cooling components can provide contact cooling to meet the requirements of continuous cooling (rare earth functional materials) and contact cooling (cooling functional materials); secondly, cooling functional materials and inner layer high polymer materials are selected, compounded and blended to prepare a high-sweating cooling profile full-drawing fiber with high thermal conductivity; the fiber has strong heat conduction ability and high moisture absorption and perspiration function, and is arranged on the inner layer of the fabric through a double rib air layer technology to quickly remove heat and sweat in the instant of direct contact with the skin, thereby producing a more comfortable skin-friendly feeling; thirdly, the air layer between the two layers of the fabric can prevent external heat from being transferred to the inside of the fabric, and the knitted structure has higher breathability than the woven and coated structures. In the case of the combination of the three functions, the fabric prepared by the scheme has strong heat insulation, breathability, moisture absorption and perspiration, and cooling and skin-friendly functions, can effectively reduce the surface temperature of the human body by 2-8 DEG C during outdoor travel in hot summer, and produce a more comfortable cooling effect.

[0020] The rare earth-based high-breathability wide-width cooling fiber fabric provided by the application adopts a rare earth functional material, a cool-feeling functional material and a high polymer material, and each component can be proportionally adjusted according to the requirements of different application scenarios. The surface layer rare earth heat insulation functional polymer DTY fiber prepared by the application can add spandex in a proportion during the process of preparing the surface layer fabric, so as to improve the fabric elasticity and wearing comfort. The inner layer high-sweat-absorbing and sweat-releasing cool-feeling special-shaped full-drawing fiber prepared by the application can adjust the number, depth and weaving density of the cross lines by adjusting the rib structure, so as to adjust the direct contact area with the skin, the thickness of the air heat insulation layer and the weaving density of the fabric. The two are combined to obtain a high-sweat-absorbing and sweat-releasing, cool-feeling, heat-insulating, breathable and cool-feeling fabric with strong reflection ability to the infrared band of sunlight. Compared with the heat insulation fabric in the prior art, the fabric has the advantages of high external heat insulation efficiency, good breathability and cool-feeling wearing comfort. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The cross-sectional view of the rare earth heat insulation functional polymer DTY fiber described in Embodiment 1 of the application. DETAILED DESCRIPTION

[0022] Unless otherwise defined, the technical terms used in the following examples have the same meanings as generally understood by those skilled in the art to which the application belongs. The test reagents used in the following examples are all conventional biochemical reagents unless otherwise specified. The experimental methods described are all conventional methods unless otherwise specified.

[0023] The application will be described in detail below with reference to the examples.

[0024] Embodiment 1

[0025] A preparation method of a rare earth-based high-breathability wide-width cooling fiber fabric, comprising the following steps:

[0026] (1) Preparation of a rare earth functional material: dissolve lanthanum chloride, cerium chloride, yttrium chloride, gadolinium chloride and aluminum chloride in a molar ratio of 1:1:1:1:1 in deionized water, then slowly drop a diammonium hydrogen phosphate solution (the molar ratio of lanthanum chloride to diammonium hydrogen phosphate is 1:5) into the system during stirring, stir for 1 hour, then heat to 200 degrees and react for 24 hours, then wash with ethanol and deionized water alternately, and dry to obtain a precursor. Calcine the precursor at 1200 degrees for 4 hours to obtain a rare earth high-entropy rare earth phosphate;

[0027] (2) Preparation of a rare earth heat insulation functional polymer DTY fiber: take 5wt% of the high-entropy rare earth phosphate La 0.2 Ce 0.2 Y 0.2 Gd 0.2 Al 0.2PO4 and 95wt% PA6 chips are dried at 120°C for 12h, the moisture content is 200ppm, the above materials are uniformly mixed and then melt-extruded at 260°C, and then rare earth cooling pre-oriented fibers (POY) are obtained by melt spinning technology through a single screw extruder at a temperature of 285°C. The POY fibers are placed for equilibrium for 48h, and then stretched and false twisted (DTY process) to obtain rare earth heat-insulating functional drawn textured yarn with a specification of 50D / 48f, the cross section is shown in Figure 1 the surface warp 1 and the surface weft 1 for preparing the surface fabric;

[0028] (3) Preparation of high heat-absorbing and heat-releasing profiled fully drawn yarn: 10wt% of the cooling mineral nanofunctional material mixture (5wt% of jade powder, 3wt% of mica powder and 2wt% of pearl powder) and 90wt% of PE chips are dried at 105°C for 12h, the moisture content is 20ppm, the above materials are uniformly mixed and then melt-extruded at 230°C, and then high heat-absorbing and heat-releasing profiled fully drawn yarn (FDY) is prepared by profiled melt spinning technology through a single screw extruder at a temperature of 245°C to obtain cross-shaped high heat-absorbing and heat-releasing profiled fiber with a specification of 30D / 12f, which is used for preparing the back warp 1 and the back weft 1 of the back fabric;

[0029] (4) Preparation of high-breathable wide-width cooling fiber fabric: the obtained rare earth heat-insulating functional DTY fiber is prepared into a functional fabric with a plain stitch through a warp-weft interlacing process, the obtained high heat-absorbing and heat-releasing profiled FDY fiber is knitted into a functional fabric with a double rib structure, and then a double-sided connection process is performed to make the two sides firmly connected, after weaving, the fabric is subjected to heat setting, steam, compression and other heat setting treatments to improve the flatness and fastness of the fabric and prevent the fabric from shrinking, deforming and fading. Finally, the fabric is subjected to washing, drying, finishing and cutting and other finishing processes to obtain a complete fabric.

[0030] Example 2

[0031] A preparation method of a rare earth-based high-breathable wide-width cooling fiber fabric, comprising the following steps:

[0032] (1) Preparation of rare earth functional material: lanthanum chloride, cerium chloride, yttrium chloride, gadolinium chloride and aluminum chloride with a molar ratio of 1:1:1:1:1 are dissolved in deionized water, and then diammonium hydrogen phosphate solution (the molar ratio of lanthanum chloride to diammonium hydrogen phosphate is 1:5) is slowly added to the system during stirring, after stirring for 1 hour, the temperature is increased to 200 degrees and reacted for 24h, and then washed with ethanol and deionized water alternately, and dried to obtain a precursor, which is calcined at 1200°C for 4h to obtain a rare earth high-entropy rare earth phosphate;

[0033] (2) Preparation of rare earth heat-insulating functional polymer DTY fiber: 3wt% of the high-entropy rare earth phosphate La0.2 Ce 0.2 Y 0.2 Gd 0.2 Al 0.2 PO4at 120℃ for 12h, 97wt% of PET chips were dried at 80℃ for 4h, and then at 120℃ for 8h, the water content was 30ppm, the above materials were uniformly mixed and then melt-extruded at 270℃, and then rare earth cooling pre-oriented fibers (POY) were obtained by melt spinning technology through a single screw extruder at 275℃, the POY fibers were placed for equilibrium for 48h, and then were stretched and false twisted (DTY process) to obtain rare earth heat-insulating functional drawn yarns with a specification of 50D / 24f, which were used as the warp 1 and weft 1 of the surface fabric;

[0034] (3) Preparation of high cooling feeling shaped full-drawing fiber: 8wt% of cooling mineral nanometer functional material mixture (4wt% of jade powder, 4wt% of medical stone powder) and 92wt% of PE chips were dried at 105℃ for 12h, the water content was 20ppm, the above materials were uniformly mixed and then melt-extruded at 230℃, and then high cooling feeling shaped full-drawing fiber (FDY) was prepared by shaped melt spinning technology through a single screw extruder at 245℃ to obtain cross-shaped high cooling feeling shaped fiber with a specification of 30D / 12f, which was used as the warp 1 and weft 1 of the inner fabric;

[0035] (4) Preparation of high air permeability wide-width cooling fiber fabric: the obtained rare earth heat-insulating functional DTY fiber was used to prepare a functional fabric with plain stitch through warp-weft interlacing process, the obtained high cooling feeling shaped FDY fiber was used to prepare a functional fabric with double-rabbit structure through knitting, and then double-sided connection process was performed to make the two sides firmly connected, after weaving, the fabric was subjected to heat setting treatment such as heating, steam, compression, etc. to improve the flatness and fastness of the fabric and prevent shrinkage, deformation and discoloration of the fabric. Finally, the fabric was subjected to washing, drying, finishing, cutting and other finishing processes to obtain a complete fabric.

[0036] Example 3

[0037] A preparation method of a rare earth-based high air permeability wide-width cooling fiber fabric, comprising the following steps:

[0038] (1) Preparation of rare earth functional material: lanthanum chloride, cerium chloride, yttrium chloride, gadolinium chloride and aluminum chloride with a molar ratio of 1:1:1:1:1 are dissolved in deionized water, then a diammonium hydrogen phosphate solution (molar ratio of lanthanum chloride to diammonium hydrogen phosphate is 1:5) is slowly added to the system during stirring, after stirring for 1 hour, the temperature is raised to 200 degrees and reacted for 24 hours, then washed with ethanol and deionized water alternately, and dried to obtain a precursor, which is calcined at 1200℃ for 4h to obtain a rare earth high-entropy rare earth phosphate;

[0039] (2) Preparation of rare earth heat insulation functional polymer DTY fiber: 8wt% of high-entropy rare earth phosphate La 0.2 Ce 0.2 Y 0.2 Gd 0.2 Al 0.2 PO4 is dried at 120℃ for 12h, the water content is 70ppm, 92wt% of PLA chip is dried at 80℃ for 4h, the temperature is raised to 120℃ and dried for 8h, the water content is 30ppm, the above materials are uniformly mixed and then melt extruded at 265℃, then through a single screw extruder at 270℃, a rare earth cooling pre-oriented fiber (POY) is obtained by melt spinning technology, the POY fiber is placed for equilibrium for 48h, then stretched and false twisted (DTY process) to obtain a rare earth heat insulation functional drawn textured yarn with a specification of 75D / 48f, which is used to prepare surface warp 1 and surface weft 1 of the surface fabric;

[0040] (3) Preparation of high-sweating cooling shaped full-drawing fiber: 5wt% of cooling mineral nano functional material mixture (2wt% of jade powder, 2wt% of mica powder and 1wt% of pearl powder) is mixed with 95wt% of PMMA chip, which is dried at 105℃ for 12h, the water content is 50ppm, the above materials are uniformly mixed and then melt extruded at 210℃, then through a single screw extruder at 220℃, a high-sweating cooling shaped full-drawing fiber (FDY) is prepared by shaped melt spinning technology, a cross-shaped high-sweating cooling shaped fiber with a specification of 50D / 24f is obtained, which is used to prepare back warp 1 and back weft 1 of the back fabric;

[0041] (4) Preparation of high-breathable wide-width cooling fiber fabric: the obtained rare earth heat insulation functional DTY fiber is prepared into a functional fabric with plain stitch through warp-weft interlacing process, the obtained high-sweating cooling shaped FDY fiber is knitted into a functional fabric with double rib structure, then double-sided connection process is carried out to make the two sides connection points firm and solid, after weaving, the fabric is subjected to heat setting, steam, compression and other heat setting treatments to improve the flatness and firmness of the fabric and prevent fabric shrinkage, deformation and color fading. Finally, the fabric is subjected to washing, drying, finishing, cutting and other finishing processes to obtain a complete fabric.

[0042] Comparative Example 1

[0043] The difference from Example 1 is only that:

[0044] Step (1) Preparation of cooling pre-oriented fiber: 100w% PA6 chips were dried at 120℃ for 12h, the moisture content was 200ppm, and the pre-oriented fiber (POY) was prepared by melt spinning technology at 285℃. The prepared POY fiber was placed for equilibrium for 48h, and then stretched and false twisted (DTY process) to obtain a stretch textured yarn with a specification of 50D / 48f, which was used to prepare surface warp 1 and surface weft 1 of the surface fabric.

[0045] Comparative Example 2

[0046] The difference from Example 1 is only that:

[0047] Step (1) Preparation of rare earth functional material: cerium chloride, yttrium chloride, gadolinium chloride and aluminum chloride with a molar ratio of 1:1:1:1 were dissolved in deionized water, and then diammonium hydrogen phosphate solution (molar ratio of cerium chloride to diammonium hydrogen phosphate was 1:5) was slowly added to the system during stirring. After stirring for 1 hour, the temperature was raised to 200 degrees and reacted for 24 hours. After washing with ethanol and deionized water alternately, the precursor was dried, and a rare earth high-entropy rare earth phosphate was obtained by calcining at 1200℃ for 4h.

[0048] Comparative Example 3

[0049] The difference from Example 1 is only that:

[0050] Step (1) Preparation of rare earth functional material: lanthanum chloride, cerium chloride, gadolinium chloride and aluminum chloride with a molar ratio of 1:1:1:1 were dissolved in deionized water, and then diammonium hydrogen phosphate solution (molar ratio of cerium chloride to diammonium hydrogen phosphate was 1:5) was slowly added to the system during stirring. After stirring for 1 hour, the temperature was raised to 200 degrees and reacted for 24 hours. After washing with ethanol and deionized water alternately, the precursor was dried, and a rare earth high-entropy rare earth phosphate was obtained by calcining at 1200℃ for 4h.

[0051] Comparative Example 4

[0052] The difference from Example 1 is only that:

[0053] Step (1) Preparation of rare earth functional material: europium chloride, cerium chloride, yttrium chloride, gadolinium chloride and aluminum chloride with a molar ratio of 1:1:1:1:1 were dissolved in deionized water, and then diammonium hydrogen phosphate solution (molar ratio of cerium chloride to diammonium hydrogen phosphate was 1:5) was slowly added to the system during stirring. After stirring for 1 hour, the temperature was raised to 200 degrees and reacted for 24 hours. After washing with ethanol and deionized water alternately, the precursor was dried, and a rare earth high-entropy rare earth phosphate was obtained by calcining at 1200℃ for 4h.

[0054] Comparative Example 5

[0055] The difference from Example 1 is only that:

[0056] Step (3) Preparation of high heat-radiation absorbing profiled full-drawing fiber: PE chips were dried at 105°C for 12h, and the water content was 20ppm. The above materials were uniformly mixed and then melt-extruded at 230°C. The cross-shaped high heat-radiation absorbing profiled fiber with a specification of 30D / 12f was prepared by profiled melt spinning technology through a single-screw extruder at a temperature of 245°C, and was used to prepare the back warp 1 and back weft 1 of the back layer fabric.

[0057] Comparative Example 6

[0058] PA6 and PE high molecular chips were used to prepare fibers by the process of Example 1, and the fibers were woven into fabrics.

[0059] The reflectivity of the fabrics obtained in Examples 1-3 and Comparative Examples 1-6 in the wavelength range of 300-2500nm and the far-infrared emissivity in the wavelength range of 8-13pm were tested, and the temperature difference of the fabric coverage after irradiation by a sunlight simulation lamp for 30 minutes was tested with Comparative Example 6 (blank sample) as a reference. The results are shown in the table below.

[0060] Table 1 Test Results

[0061]

[0062] Comparative Example 6 is a blank fabric sample without any functional components, and the knitted structure has higher air permeability compared to the woven and coated structures. It is used as a comparison fabric for the heat insulation experiment. The greater the temperature rise of the comparison fabric and the experimental fabric, the better the heat insulation performance of the fabric. The results in the table above show that after adding rare earth high-entropy phosphates and cooling components, the heat insulation and cooling skin-friendly performance of the fabric are significantly improved.

[0063] The results of Comparative Example 1 show that without adding high-entropy rare earth phosphates, but adding cooling mineral nanomaterials, the reflectivity and emissivity of the fiber fabric are greatly reduced, and the sustained heat insulation effect cannot be achieved.

[0064] From the comparison results of Examples 1-3 and Comparative Examples 2-3, it can be seen that the synergistic effect of multiple elements is needed to maximize the heat insulation effect. The addition of yttrium chloride can enhance the reflectivity, while lanthanum chloride and cerium chloride can improve the far-infrared emissivity.

[0065] From the comparison results of Examples 1-3 and Comparative Example 4, it can be seen that other rare earth compound ions have smaller radii, and the doping structure is not stable enough. The radii of lanthanum, cerium, and yttrium ions are closest, and they are more likely to be lattice-doped, thereby improving the emissivity and reflectivity of the material.

[0066] The results of Comparative Example 5 show that the contact cool feeling coefficient of the fiber fabric is low without the addition of the cool feeling component, and the addition of the cool feeling component improves the thermal comfort and reduces the burning sensation of direct contact between the skin and the fabric.

[0067] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for preparing a rare earth-based high-breathability wide-width cooling fiber fabric, characterized in that: Includes the following steps: (1) Preparation of rare earth thermal insulation functional polymer fiber: After drying the rare earth functional material and the surface polymer material respectively, they are mixed evenly and then melt extruded and melt spun to obtain rare earth thermal insulation functional polymer fiber. (2) Preparation of high-absorption and heat-dissipating shaped fully stretched fiber: The heat-dissipating functional material and the inner polymer material are dried separately and then mixed evenly. After melt extrusion and melt spinning, high-absorption and heat-dissipating shaped fully stretched fiber is obtained. (3) Preparation of high breathability wide width cooling fiber fabric: The rare earth heat insulation functional polymer fiber is prepared by warp and weft interlacing process to obtain a plain knit functional fabric, and the high absorbency and coolness sensation irregular full stretch fiber is knitted to obtain a double rib structure functional fabric, and then the rare earth-based high breathability wide width cooling fiber fabric is obtained by double-sided connection process. The rare earth functional material in step (1) is high-entropy rare earth phosphate La. x Ce y Y z Gd m Al n PO4, where x+y+z+m+n=1; the mass ratio of rare earth functional material to surface polymer material in step (1) is 1-10:90-99; The high-entropy rare earth phosphate is prepared by a method comprising the following steps: dissolving lanthanum halide, cerium halide, yttrium halide, gadolinium halide and aluminum halide in deionized water, adding diammonium hydrogen phosphate solution dropwise under stirring, continuing stirring, heating to react, washing and drying the reaction product to obtain a precursor, and calcining the precursor to obtain the high-entropy rare earth phosphate. The molar ratio of lanthanum halide, cerium halide, yttrium halide, gadolinium halide, aluminum halide and diammonium hydrogen phosphate is 1:1:1:1:1:5-6; the calcination step is carried out at a temperature of 800-1200℃ for 4-6 hours. The cooling functional material in step (2) is at least one of jade powder, mica powder, pearl powder and maifan stone; the particle size of the cooling functional material in step (2) is 200-500 nm; the mass ratio of the cooling functional material to the inner polymer material in step (2) is 1-10:90-99. The surface polymer material in step (1) is at least one of PET, PBT, PTT, PLA and PA; the inner polymer material in step (2) is at least one of PE, PTFE, EVA and PMMA.

2. The method for preparing rare earth-based high-breathability wide-width cooling fiber fabric according to claim 1, characterized in that: The temperature of the melt extrusion step in step (1) is 150-350℃ and the extrusion speed is 100-300r / min; the temperature of the melt spinning step in step (1) is 200-350℃ and the winding speed is 1800-5000m / min.

3. The method for preparing rare earth-based high-breathability wide-width cooling fiber fabric according to claim 1, characterized in that: The temperature of the melt extrusion step in step (2) is 150-350℃ and the extrusion speed is 100-300r / min; the temperature of the melt spinning step in step (2) is 200-350℃ and the winding speed is 1800-5000m / min.

4. The method for preparing rare earth-based high-breathability wide-width cooling fiber fabric according to claim 1, characterized in that: The cross-section of the high-absorption and cooling-feeling irregularly shaped fully stretched fiber in step (2) is an irregular structure.

5. The method for preparing rare earth-based high-breathability wide-width cooling fiber fabric according to claim 1, characterized in that: The cross section of the high-absorption and cooling-feeling irregularly shaped fully stretched fiber in step (2) is at least one of cross, double cross and trilobal.

6. A rare earth-based high-breathability wide-width cooling fiber fabric prepared using the preparation method according to any one of claims 1-5.

Images