A lightweight clothing fabric based on nano-thermal radiation and its production method

Abstract

This invention discloses a lightweight clothing fabric based on nano-thermal radiation and its production method. The steps include: preparing thermal radiation particles with a germanium shell fully coated with tourmaline structure using germanium dioxide powder and tourmaline powder as raw materials; then removing part of the germanium shell from the particle surface using dry etching to obtain thermal radiation particles with a germanium shell partially coated with tourmaline structure; placing the thermal radiation particles in an organic solvent and stirring to disperse them into a slurry; mixing the slurry with polyamide chips, drying, and then melting and granulating; taking the masterbatch and performing melt extrusion, spinning, hot stretching, and relaxation heat setting to obtain thermal radiation fibers; and interlacing the thermal radiation fibers as warp and polypropylene fibers as weft. This invention uses a germanium shell partially coated with tourmaline structure as nano-thermal radiation particles, which allows the far-infrared properties of germanium and tourmaline to be superimposed and complementary. It also improves the dispersion effect of particles within the fiber, avoiding particle stratification or agglomeration, ultimately resulting in a fabric with high overall far-infrared emissivity and good heating effect.

Description

Technical Field

[0001] This invention relates to the field of fabric preparation technology, specifically to a lightweight clothing fabric based on nano-thermal radiation and its production method. Background Technology

[0002] Far-infrared fiber is a typical heat-generating and heat-storing material. Due to the addition of far-infrared additives during the spinning process, it can absorb and store external heat, radiating it back to the human body while simultaneously reflecting far-infrared rays radiated outwards by the body. This results in a warming effect. Furthermore, when far-infrared radiation is absorbed by the body, it can also have certain health benefits. Therefore, the application of far-infrared fibers in the production of thermally insulating clothing fabrics with heat radiation capabilities has been widely researched and applied in recent years, especially in down-filled fabrics. This allows for the reduction of down filling while maintaining warmth, thus achieving lighter garments.

[0003] However, most of the far-infrared additives used in existing heat-radiating fabrics are single substances or direct mixtures of multiple substances. Common choices include one or more of tourmaline, maifanite, far-infrared ceramic powder, germanium stone, and potassium feldspar. These far-infrared additives lack synergistic effects, resulting in a low overall far-infrared emissivity and poor heating effect of the fabric. Summary of the Invention

[0004] The purpose of this invention is to provide a lightweight clothing fabric based on nano-thermal radiation and its production method, which solves the problems of low far-infrared emissivity and poor heating effect of existing thermal radiation fabrics.

[0005] The present invention achieves the above objectives through the following technical solutions:

[0006] A method for producing lightweight clothing fabric based on nano-thermal radiation, comprising the following steps:

[0007] S1. Dissolve nano-germanium dioxide powder in sodium hydroxide solution and adjust the pH of the solution to 6-8 to obtain solution A. Disperse nano-tourmaline powder in polyvinylpyrrolidone solution and stir for 6-12 hours to obtain solution B. Mix solution A and solution B evenly, add sodium borohydride solution to the mixture, heat to 80-100℃ and react for 10-14 hours. Filter the obtained product to obtain filter residue. Wash and dry the filter residue, and then sinter it at 750-850℃ for 6-8 hours to obtain nano-thermal radiation particles with a germanium shell fully coated with tourmaline structure.

[0008] S2. Take the nano-thermal radiation particles and use dry etching technology to remove part of the germanium shell on the particle surface to obtain nano-thermal radiation particles with a germanium shell semi-encapsulated tourmaline structure.

[0009] S3. Place the nano-thermal radiation particles in an organic solvent, add a dispersant, and disperse by stirring to obtain a thermal radiation slurry;

[0010] S4. Take the thermal radiation slurry and polyamide chips, mix them evenly, dry them and then melt granulate them to obtain thermal radiation masterbatch. Take the thermal radiation masterbatch and melt extrusion, spin spinning, hot stretching and relaxation heat setting to obtain thermal radiation fiber.

[0011] S5. Using the heat-radiating fiber as the warp and the polypropylene fiber as the weft, the lightweight clothing fabric is obtained by interlacing.

[0012] A further improvement is that, in step S1, the concentration of the sodium hydroxide solution is 10-14 mol / L, and the ratio of nano-germanium dioxide powder to sodium hydroxide solution is 1 g: 50-100 mL; the concentration of the polyvinylpyrrolidone solution is 0.02-0.05 mg / mL, and the ratio of nano-tourmaline powder to polyvinylpyrrolidone solution is 1 g: 20-50 mL; the mass ratio of solution A to solution B is 1:4-6; the concentration of the sodium borohydride solution is 0.1-0.3 g / mL, and the mass ratio of sodium borohydride solution to the mixed solution is 1:3-4.

[0013] A further improvement is that, in step S2, the etching gas used in the dry etching is chlorine and oxygen, wherein the chlorine flow rate is 100-200 sccm, the oxygen flow rate is 5-50 sccm, the etching gas pressure is 50-200 mtorr, the source power is 600-700 W, the bias power is 120-150 W, and the etching time is 3-5 min.

[0014] A further improvement is that, in step S3, the mass ratio between the nano-thermal radiation particles, the organic solvent, and the dispersant is 1:1.5-3:0.05-0.1.

[0015] A further improvement is that, in step S3, the organic solvent is one of ethanol, ethylene glycol, or isopropanol.

[0016] A further improvement is that, in step S3, the dispersant is selected from one of polyvinylpyrrolidone, sebacic acid, trimethylolethane, polyethylene glycol ester, or phenyl benzoate.

[0017] A further improvement is that, in step S4, the mass ratio of the thermal radiation slurry to the polyamide chips is 1:3-8.

[0018] A further improvement is that, in step S4, the polyamide chips are one or more of polyamide 6, polyamide 66, polyamide 56, polyamide 510, polyamide 512, polyamide 610, and polyamide 612.

[0019] A further improvement is that, in step S4, the melt granulation is carried out using a screw melt extrusion method, with the screw melting temperature being 270-300℃, the melt temperature during melt extrusion being 250-280℃, the spinning speed during spinning being 800-1500m / min, the spinneret diameter being 0.25-0.4mm, the draw ratio during stretching being 3.2-3.5, and the temperature during relaxation heat setting being 65-80℃.

[0020] The present invention also provides a lightweight clothing fabric based on nano-thermal radiation, wherein the lightweight clothing fabric is produced by the above-described production method.

[0021] The beneficial effects of this invention are as follows: This invention uses a germanium shell semi-encapsulated tourmaline structure as nano thermal radiation particles, which allows the far-infrared properties of germanium and tourmaline to be superimposed and complement each other. At the same time, it can also improve the dispersion effect of particles in the fiber, avoid particle stratification or agglomeration, and ultimately make the fabric have a high overall far-infrared emissivity and good heating effect. Detailed Implementation

[0022] The present application will be further described in detail below with reference to specific embodiments. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0023] I. Main Materials

[0024] (1) Nano germanium dioxide powder: purchased from Qinghe County Yaoxie Metal Materials Co., Ltd., with a particle size of 20-50nm and a purity of more than 99.9%.

[0025] (2) Nano-tourmaline powder: purchased from Shijiazhuang Chenghe New Material Technology Co., Ltd., with a particle size of 400-500nm and a density of 3.15g / cm³. 3 .

[0026] II. Conducting the Experiment

[0027] Example 1

[0028] A method for producing lightweight clothing fabric based on nano-thermal radiation, comprising the following steps:

[0029] S1. Dissolve nano-germanium dioxide powder in a 14 mol / L sodium hydroxide solution at a ratio of 1 g: 50 mL, and adjust the pH of the solution to 6 to obtain solution A; then disperse nano-tourmaline powder in a 0.05 mg / mL polyvinylpyrrolidone solution at a ratio of 1 g: 20 mL, and stir for 6 h to obtain solution B; mix the two solutions evenly at a mass ratio of solution A: solution B = 1:4, and add a 0.3 g / mL sodium borohydride solution to the mixture at a mass ratio of sodium borohydride solution: mixture = 1:3. Heat to 80℃ and react for 14 h. Filter the obtained product to obtain filter residue, wash and dry the filter residue, and then sinter at 750℃ for 8 h to obtain nano-thermal radiation particles with a germanium shell fully coated with tourmaline structure.

[0030] S2. Take the nano-thermal radiation particles and remove part of the germanium shell on the particle surface using dry etching technology to obtain nano-thermal radiation particles with a germanium shell semi-encapsulated tourmaline structure. The etching gas used in the dry etching is chlorine and oxygen, wherein the chlorine flow rate is 100 sccm, the oxygen flow rate is 5 sccm, the etching pressure is 50 mtorr, the source power is 600 W, the bias power is 120 W, and the etching time is 5 min.

[0031] S3. Place the nano-thermal radiation particles in an organic solvent, add a dispersant, and disperse by stirring to obtain a thermal radiation slurry; wherein, the mass ratio between the nano-thermal radiation particles, the organic solvent and the dispersant is 1:1.5:0.05, and the organic solvent is ethanol and the dispersant is polyvinylpyrrolidone.

[0032] S4. The thermal radiation slurry and polyamide chips (polyamide 6) are mixed evenly at a mass ratio of 1:3, dried, and then melt-granulated to obtain thermal radiation masterbatch. The thermal radiation masterbatch is then subjected to melt extrusion, spinning, hot stretching, and relaxation heat setting to obtain thermal radiation fiber. The melt granulation is carried out by screw melt extrusion, with a screw melting temperature of 270°C, a melt temperature of 250°C during melt extrusion, a spinning speed of 800 m / min during spinning, a spinneret diameter of 0.25 mm, a stretching ratio of 3.2 during stretching, and a relaxation heat setting temperature of 65°C.

[0033] S5. Using the heat-radiating fiber as the warp and the polypropylene fiber as the weft, the lightweight clothing fabric is obtained by interlacing.

[0034] Example 2

[0035] A method for producing lightweight clothing fabric based on nano-thermal radiation, comprising the following steps:

[0036] S1. Dissolve nano-germanium dioxide powder in a 12 mol / L sodium hydroxide solution at a ratio of 1 g: 80 mL, and adjust the pH of the solution to 7 to obtain solution A; then disperse nano-tourmaline powder in a 0.04 mg / mL polyvinylpyrrolidone solution at a ratio of 1 g: 40 mL, and stir for 9 h to obtain solution B; mix the two solutions evenly at a mass ratio of solution A: solution B = 1:5, and add a 0.2 g / mL sodium borohydride solution to the mixture at a mass ratio of sodium borohydride solution: mixture = 1:3.5. Heat to 90℃ and react for 12 h. Filter the obtained product to obtain filter residue, wash and dry the filter residue, and then sinter at 800℃ for 7 h to obtain nano-thermal radiation particles with a germanium shell fully coated with tourmaline structure.

[0037] S2. Take the nano-thermal radiation particles and remove part of the germanium shell on the particle surface using dry etching technology to obtain nano-thermal radiation particles with a germanium shell semi-coated tourmaline structure. The etching gas used in the dry etching is chlorine and oxygen, wherein the chlorine flow rate is 150 sccm, the oxygen flow rate is 20 sccm, the etching pressure is 100 mtorr, the source power is 650 W, the bias power is 140 W, and the etching time is 4 min.

[0038] S3. Place the nano-thermal radiation particles in an organic solvent, add a dispersant, and disperse by stirring to obtain a thermal radiation slurry; wherein, the mass ratio between the nano-thermal radiation particles, the organic solvent and the dispersant is 1:2:0.08, and the organic solvent is ethylene glycol and the dispersant is sebacic acid.

[0039] S4. The heat radiation slurry and polyamide chips (polyamide 66) are mixed evenly at a mass ratio of 1:5, dried, and then melt-granulated to obtain heat radiation masterbatch. The heat radiation masterbatch is then melt-extruded, spun, hot-stretched, and relaxed heat-set to obtain heat radiation fiber. The melt granulation is carried out by screw melt extrusion, and the screw melting temperature is 280℃. The melt temperature during melt extrusion is 260℃. The spinning speed during spunting is 1200m / min, the spinneret diameter is 0.3mm, the stretching ratio is 3.4, and the relaxation heat-set temperature is 70℃.

[0040] S5. Using the heat-radiating fiber as the warp and the polypropylene fiber as the weft, the lightweight clothing fabric is obtained by interlacing.

[0041] Example 3

[0042] A method for producing lightweight clothing fabric based on nano-thermal radiation, comprising the following steps:

[0043] S1. Dissolve nano-germanium dioxide powder in a 10 mol / L sodium hydroxide solution at a ratio of 1 g: 100 mL, and adjust the pH of the solution to 8 to obtain solution A; then disperse nano-tourmaline powder in a 0.02 mg / mL polyvinylpyrrolidone solution at a ratio of 1 g: 50 mL, and stir for 12 h to obtain solution B; mix the two solutions evenly at a mass ratio of solution A: solution B = 1:6, and add a 0.1 g / mL sodium borohydride solution to the mixture at a mass ratio of sodium borohydride solution: mixture = 1:4. Heat to 100℃ and react for 10 h. Filter the obtained product to obtain filter residue, wash and dry the filter residue, and then sinter at 850℃ for 6 h to obtain nano-thermal radiation particles with a germanium shell fully coated with tourmaline structure.

[0044] S2. Take the nano-thermal radiation particles and remove part of the germanium shell on the particle surface using dry etching technology to obtain nano-thermal radiation particles with a germanium shell semi-encapsulated tourmaline structure. The etching gas used in the dry etching is chlorine and oxygen, wherein the chlorine flow rate is 200 sccm, the oxygen flow rate is 50 sccm, the etching pressure is 200 mtorr, the source power is 700 W, the bias power is 150 W, and the etching time is 3 min.

[0045] S3. Place the nano-thermal radiation particles in an organic solvent, add a dispersant, and disperse by stirring to obtain a thermal radiation slurry; wherein, the mass ratio between the nano-thermal radiation particles, the organic solvent and the dispersant is 1:3:0.1, and the organic solvent is isopropanol and the dispersant is polyethylene glycol ester.

[0046] S4. The heat radiation slurry and polyamide chips (polyamide 610) are mixed evenly at a mass ratio of 1:8, dried, and then melt-granulated to obtain heat radiation masterbatch. The heat radiation masterbatch is then melt-extruded, spun, hot-stretched, and relaxed heat-set to obtain heat radiation fiber. The melt granulation is carried out by screw melt extrusion, and the screw melting temperature is 300℃. The melt temperature during melt extrusion is 280℃. The spinning speed during spunting is 1500m / min, the spinneret diameter is 0.4mm, the stretching ratio is 3.5, and the relaxation heat-set temperature is 80℃.

[0047] S5. Using the heat-radiating fiber as the warp and the polypropylene fiber as the weft, the lightweight clothing fabric is obtained by interlacing.

[0048] Comparative Example 1

[0049] A method for producing lightweight clothing fabric based on nano-thermal radiation, comprising the following steps:

[0050] S1. Dissolve nano-germanium dioxide powder in a 12 mol / L sodium hydroxide solution at a ratio of 1 g: 80 mL, and adjust the pH of the solution to 7 to obtain solution A; then disperse nano-tourmaline powder in a 0.04 mg / mL polyvinylpyrrolidone solution at a ratio of 1 g: 40 mL, and stir for 9 h to obtain solution B; mix the two solutions evenly at a mass ratio of solution A: solution B = 1:5, and add a 0.2 g / mL sodium borohydride solution to the mixture at a mass ratio of sodium borohydride solution: mixture = 1:3.5. Heat to 90℃ and react for 12 h. Filter the obtained product to obtain filter residue, wash and dry the filter residue, and then sinter at 800℃ for 7 h to obtain nano-thermal radiation particles with a germanium shell fully coated with tourmaline structure.

[0051] S2. Place the nano-thermal radiation particles in an organic solvent, add a dispersant, and disperse by stirring to obtain a thermal radiation slurry; wherein, the mass ratio between the nano-thermal radiation particles, the organic solvent and the dispersant is 1:2:0.08, and the organic solvent is ethylene glycol and the dispersant is sebacic acid.

[0052] S3. The heat radiation slurry and polyamide chips (polyamide 66) are mixed evenly at a mass ratio of 1:5, dried, and then melt-granulated to obtain heat radiation masterbatch. The heat radiation masterbatch is then melt-extruded, spun, hot-stretched, and relaxed heat-set to obtain heat radiation fiber. The melt granulation is carried out by screw melt extrusion, and the screw melting temperature is 280℃. The melt temperature during melt extrusion is 260℃. The spinning speed during spunting is 1200m / min, the spinneret diameter is 0.3mm, the stretching ratio is 3.4, and the relaxation heat-set temperature is 70℃.

[0053] S4. Using the heat-radiating fiber as the warp and the polypropylene fiber as the weft, the lightweight clothing fabric is obtained by interlacing.

[0054] Comparative Example 2

[0055] A method for producing lightweight clothing fabric based on nano-thermal radiation, comprising the following steps:

[0056] S1. Take nano-germanium powder and nano-tourmaline powder at a mass ratio of 1:9 (this mass ratio is the same as the mass ratio of germanium shell to tourmaline in the germanium shell semi-coated tourmaline nano-thermal radiation particles prepared in step S2 of Example 2; the density of the germanium shell semi-coated tourmaline nano-thermal radiation particles prepared in Example 2 is 3.285 g / cm³). 3 Germanium has a density of 5.35 g / cm³. 3 Tourmaline has a density of 3.15 g / cm³. 3 Therefore, according to the density measurement method, the mass ratio is calculated to be 1:9.0. Direct mixing yields nano-thermal radiation particles.

[0057] S2. Place the nano-thermal radiation particles in an organic solvent, add a dispersant, and disperse by stirring to obtain a thermal radiation slurry; wherein, the mass ratio between the nano-thermal radiation particles, the organic solvent and the dispersant is 1:2:0.08, and the organic solvent is ethylene glycol and the dispersant is sebacic acid.

[0058] S3. The heat radiation slurry and polyamide chips (polyamide 66) are mixed evenly at a mass ratio of 1:5, dried, and then melt-granulated to obtain heat radiation masterbatch. The heat radiation masterbatch is then melt-extruded, spun, hot-stretched, and relaxed heat-set to obtain heat radiation fiber. The melt granulation is carried out by screw melt extrusion, and the screw melting temperature is 280℃. The melt temperature during melt extrusion is 260℃. The spinning speed during spunting is 1200m / min, the spinneret diameter is 0.3mm, the stretching ratio is 3.4, and the relaxation heat-set temperature is 70℃.

[0059] S4. Using the heat-radiating fiber as the warp and the polypropylene fiber as the weft, the lightweight clothing fabric is obtained by interlacing.

[0060] III. Performance Testing

[0061] The lightweight clothing fabrics prepared in Examples 1-3 and Comparative Examples 1-2 were cut into 10cm×10cm samples. The far-infrared emissivity and far-infrared irradiation temperature rise of each sample were tested according to the national standard GB-T 30127-2013 "Detection and Evaluation of Far-Infrared Properties of Textiles". The test results are summarized in Table 1 below:

[0062] Table 1: Test Results of Far-Infrared Emissivity and Far-Infrared Irradiation Temperature Rise

[0063] Group Far-infrared emissivity (%) Temperature rise due to far-infrared irradiation (°C) Example 1 93.6 3.9 Example 2 95.1 4.5 Example 3 94.2 4.0 Comparative Example 1 90.4 2.6 Comparative Example 2 89.3 2.1

[0064] As can be seen from Table 1 above, the lightweight clothing fabrics prepared in Examples 1-3 of this invention exhibit outstanding far-infrared performance, especially Example 2, which achieves a far-infrared emissivity of 95.1% and a temperature rise of 4.5℃. In contrast, Comparative Example 1, lacking a dry etching step and using nano-thermal radiation particles with a germanium shell fully coated tourmaline structure, shows a far-infrared emissivity reduced to 90.4% and a temperature rise of only 2.6℃. Comparative Example 2, using nano-thermal radiation particles prepared by directly mixing nano-germanium powder and nano-tourmaline powder, achieves a far-infrared emissivity of only 89.3% and a temperature rise of only 2.1℃. This demonstrates that using a germanium shell partially coated tourmaline structure as nano-thermal radiation particles results in overall far-infrared performance of the fabric that is superior to that of ordinary directly mixed nano-thermal radiation particles.

[0065] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A method for producing lightweight clothing fabric based on nano-thermal radiation, characterized in that the steps include... include: S1. Dissolve nano-germanium dioxide powder in sodium hydroxide solution and adjust the pH of the solution to 6-8 to obtain solution A. Disperse nano-tourmaline powder in polyvinylpyrrolidone solution and stir for 6-12 hours to obtain solution B. Mix solution A and solution B evenly, add sodium borohydride solution to the mixture, heat to 80-100℃ and react for 10-14 hours. Filter the obtained product to obtain filter residue. Wash and dry the filter residue, and then sinter it at 750-850℃ for 6-8 hours to obtain nano-thermal radiation particles with a germanium shell fully coated with tourmaline structure. S2. Take the nano-thermal radiation particles and use dry etching technology to remove part of the germanium shell on the particle surface to obtain nano-thermal radiation particles with a germanium shell semi-encapsulated tourmaline structure. S3. Take the nano-thermal radiation particles with germanium shell semi-coated tourmaline structure, place them in an organic solvent, add a dispersant, and disperse them by stirring to obtain a thermal radiation slurry. S4. Take the thermal radiation slurry and polyamide chips, mix them evenly, dry them and then melt granulate them to obtain thermal radiation masterbatch. Take the thermal radiation masterbatch and melt extrusion, spin spinning, hot stretching and relaxation heat setting to obtain thermal radiation fiber. S5. Using the heat-radiating fiber as the warp and the polypropylene fiber as the weft, the lightweight clothing fabric is obtained by interlacing.

2. The method for producing a lightweight clothing fabric based on nano-thermal radiation according to claim 1, characterized in that, In step S1, the concentration of the sodium hydroxide solution is 10-14 mol / L, and the ratio of nano-germanium dioxide powder to sodium hydroxide solution is 1g:50-100mL; the concentration of the polyvinylpyrrolidone solution is 0.02-0.05mg / mL, and the ratio of nano-tourmaline powder to polyvinylpyrrolidone solution is 1g:20-50mL; the mass ratio of solution A to solution B is 1:4-6; the concentration of the sodium borohydride solution is 0.1-0.3g / mL, and the mass ratio of sodium borohydride solution to the mixed solution is 1:3-4.

3. The method for producing a lightweight clothing fabric based on nano-thermal radiation according to claim 1, characterized in that, In step S2, the etching gas used in the dry etching is chlorine and oxygen, wherein the chlorine flow rate is 100-200 sccm, the oxygen flow rate is 5-50 sccm, the etching gas pressure is 50-200 mtorr, the source power is 600-700 W, the bias power is 120-150 W, and the etching time is 3-5 min.

4. The method for producing a lightweight clothing fabric based on nano-thermal radiation according to claim 1, characterized in that, In step S3, the mass ratio of the nano-thermal radiation particles, organic solvent and dispersant is 1:1.5-3:0.05-0.

1.

5. The method for producing a lightweight clothing fabric based on nano-thermal radiation according to claim 1, characterized in that, In step S3, the organic solvent is one of ethanol, ethylene glycol, or isopropanol.

6. The method for producing a lightweight clothing fabric based on nano-thermal radiation according to claim 1, characterized in that, In step S3, the dispersant is selected from one of polyvinylpyrrolidone, sebacic acid, trimethylolethane, polyethylene glycol ester, or phenyl benzoate.

7. The method for producing a lightweight clothing fabric based on nano-thermal radiation according to claim 1, characterized in that, In step S4, the mass ratio of the thermal radiation slurry to the polyamide chips is 1:3-8.

8. The method for producing a lightweight clothing fabric based on nano-thermal radiation according to claim 1, characterized in that, In step S4, the polyamide chips are one or more of polyamide 6, polyamide 66, polyamide 56, polyamide 510, polyamide 512, polyamide 610, and polyamide 612.

9. The method for producing a lightweight clothing fabric based on nano-thermal radiation according to claim 1, characterized in that, In step S4, the melt granulation is carried out by screw melt extrusion, and the screw melting temperature is 270-300℃. The melt temperature during melt extrusion is 250-280℃, the spinning speed during spinning is 800-1500m / min, the spinneret diameter is 0.25-0.4mm, the draw ratio during stretching is 3.2-3.5, and the temperature during relaxation heat setting is 65-80℃.

10. A lightweight clothing fabric based on nano-thermal radiation, characterized in that, The lightweight clothing fabric is produced by the production method described in any one of claims 1-9.