Antibacterial and infrared heating blended fabric and preparation method thereof

Abstract

The invention relates to the technical field of fiber fabrics, and discloses an antibacterial and infrared heating blended fabric and a preparation method thereof.The modified tourmaline is obtained by performing surface modification on tourmaline micro powder through a polycarboxyl quaternary ammonium salt modifier. According to the invention, tourmaline micro-powder is modified, then the tourmaline micro-powder and nylon 6 are subjected to melt blending spinning, the modified tourmaline micro-powder and the nylon 6 have good compatibility, the dispersibility of the tourmaline micro-powder in the nylon fiber is improved, and the blending spinning nylon fiber has good breaking strength and breaking elongation. And the modified tourmaline micro powder is uniformly dispersed in a fiber matrix, so that the far infrared emissivity of the fiber is remarkably improved, and the fiber can be endowed with good infrared heating performance and excellent antibacterial performance. The antibacterial infrared heating nylon fiber disclosed by the invention can be blended with wool fiber, acrylic fiber or polyester fiber and the like to prepare an antibacterial infrared heating blended fabric.

Description

Technical Field

[0001] The invention relates to the technical field of fiber fabrics, in particular to an antibacterial and infrared heating blended fabric and a preparation method thereof. Background Art

[0002] Nylon fiber and its fabrics have the advantages of good wear resistance, strong heat resistance, high mechanical properties, etc., and are loved by consumers. By blending tourmaline, montmorillonite and other natural minerals, fiber fabric products with good mechanical properties, infrared heating, antibacterial and other functions can be obtained. Tourmaline is a unique natural silicate mineral with properties such as pyroelectricity, conductivity, far-infrared radiation and negative ion release. It is widely used in coatings, plastics, fiber fabrics and other materials. The surface modification of tourmaline, improving its dispersibility and improving its compatibility with polymer materials are research hotspots. Common modifiers for tourmaline are polyacrylic acid, sodium stearate, Span 60, etc. CN112608497B discloses that the surface of tourmaline powder is modified by coupling agent, higher fatty acid, unsaturated organic acid or water-soluble polymer modifier to obtain modified tourmaline powder, which is then compounded with phenolic resin, curing agent, etc., and finally blended with carrier resin for extrusion and granulation to obtain health-care functional fiber masterbatch, which can reflect the good far-infrared emission performance of fiber fabric. However, the preparation method of modified tourmaline powder and health-care functional fiber masterbatch in this patent is relatively complicated, and does not give fiber fabric good antibacterial properties. Summary of the invention

[0003] (I) Technical problem to be solved: The present invention provides an infrared heating blended fabric with antibacterial effect.

[0004] (II) Technical solution: An antibacterial and infrared heating blended fabric, which is blended from antibacterial infrared heating nylon fiber and a second fiber.

[0005] The preparation method of antibacterial infrared heating nylon fiber comprises the following steps:

[0006] Step S1, add water and tourmaline powder into a reaction container, place it in an ultrasonic instrument for ultrasonic dispersion, then add a polycarboxyl quaternary ammonium salt modifier, heat to 40-55° C., stir for surface modification for 6-12 hours, filter, wash with water, and dry to obtain modified tourmaline.

[0007] Step S2, adding nylon 6 and modified tourmaline into a spinning machine for melt spinning, with a screw temperature of 245-255°C and a screw speed of 80-100r / min; stretching through a stretching roller of a hot stretching device, with a stretching temperature of 115-120°C and a stretching multiple of 3-4 times; and obtaining antibacterial infrared heating nylon fiber.

[0008] Furthermore, the second fiber is wool fiber, acrylic fiber or polyester fiber.

[0009] Furthermore, in step S1, the mass of the polycarboxyl quaternary ammonium salt modifier is 5-30% of the mass of the tourmaline powder.

[0010] Furthermore, in step S1, the mass of the modified tourmaline is 0.2-2% of the mass of nylon 6.

[0011] Further, the preparation method of the polycarboxyl quaternary ammonium salt modifier comprises:

[0012] (1) Nitrogen is introduced into the reaction vessel, and N,N-dimethylformamide, 2,2'-diamino-N-methyldiethylamine, alkyl diacyl chloride, and triethylamine in a molar ratio of 1:(0.9-1.1):(1-1.1) are added in an ice bath, and then stirred for reaction at room temperature for 12-18 hours, and N,N-dimethylformamide is removed by vacuum distillation, washed with acetone, and dried to obtain a modifier precursor. The reaction formula is as follows:

[0013]

[0014] (2) Add ethanol, modifier precursor, water, and chloroacetic acid to a reaction vessel equipped with a condenser reflux tube, heat to 75-85°C, stir and react for 18-24 hours, heat and stir to volatilize, precipitate, cool in an ice bath, filter, wash with acetone, and dry to obtain a polycarboxyl quaternary ammonium salt modifier. The reaction formula is as follows:

[0015]

[0016] Furthermore, in (1), the alkyl diacyl chloride is 1,8-dioctanoyl chloride, azelayl chloride, sebacoyl chloride or dodecanedioyl chloride.

[0017] Furthermore, in (2), the mass of chloroacetic acid is 25-40% of the mass of the modifier precursor.

[0018] (III) Technical Effect: The present invention conducts amidation polymerization reaction on 2,2'-diamino-N-methyldiethylamine and alkyl diacyl chloride, and then conducts quaternization reaction with chloroacetic acid to obtain a polycarboxyl quaternary ammonium salt modifier containing a polyamide molecular chain. Then, the carboxyl group of its side chain interacts with the surface of tourmaline micropowder, thereby introducing a polyamide molecular chain containing a quaternary ammonium salt group on the tourmaline surface.

[0019] The present invention melt-blended and spun modified tourmaline with nylon 6, introduced polyamide molecular chains on the surface of tourmaline micropowder, and nylon 6 also has polyamide molecular chains, so that the modified tourmaline micropowder and nylon 6 have good compatibility, improve the dispersibility of tourmaline micropowder in nylon fiber, and after blending and spinning, the tourmaline micropowder has no significant adverse effect on the mechanical properties of the fiber, and still has good breaking strength and breaking elongation. In addition, the tourmaline micropowder is evenly dispersed in the fiber matrix, significantly improving the far-infrared emissivity of the fiber, and can give the fiber good infrared heating performance.

[0020] After the tourmaline micropowder of the present invention is modified by a polycarboxyl quaternary ammonium salt modifier, a large number of antibacterial quaternary ammonium salt groups are introduced on the surface of the tourmaline micropowder. After being blended and spun with nylon 6, the quaternary ammonium salt groups are uniformly dispersed in the fiber matrix, thus giving the nylon fiber excellent antibacterial properties. DETAILED DESCRIPTION

[0021] For ease of understanding of the present invention, preferred embodiments of the present invention are provided below. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0022] In the specific implementation method, nylon 6: Haozheng New Material Technology (Dongguan) Co., Ltd. Tourmaline micropowder: average particle size 30nm, Hangzhou Zheming New Material Co., Ltd. Polyacrylic acid: Maoming Runjing Chemical Co., Ltd.

[0023] Example 1

[0024] (1) Nitrogen was introduced into the reaction vessel, 10 mL of N,N-dimethylformamide, 4 mmol of 2,2'-diamino-N-methyldiethylamine, 4 mmol of sebacic acid chloride, and 4.4 mmol of triethylamine were added in an ice bath, and then stirred for reaction at room temperature for 12 h. N,N-dimethylformamide was removed by vacuum distillation, and the mixture was washed with acetone and dried to obtain a modifier precursor.

[0025] (2) Add 20 mL of ethanol, 2 g of the modifier precursor, 15 mL of water, and 0.6 g of chloroacetic acid to a reaction vessel equipped with a condenser reflux tube, heat to 75° C., stir and react for 24 hours, heat and stir to evaporate, precipitate, cool in an ice bath, filter, wash with acetone, and dry to obtain a polycarboxyl quaternary ammonium salt modifier.

[0026] (3) Add 200 mL of water and 20 g of tourmaline powder to a reaction container, place it in an ultrasonic instrument for ultrasonic dispersion, then add 1 g of a polycarboxyl quaternary ammonium salt modifier, heat to 40° C., stir for surface modification for 8 h, filter, wash with water, and dry to obtain modified tourmaline.

[0027] (4) 1 kg of nylon 6 and 2 g of modified tourmaline were added into a spinning machine for melt spinning, with a screw temperature of 250°C and a screw speed of 100 r / min; the fibers were stretched by the stretching rollers of a hot stretching device at a temperature of 120°C and a stretching ratio of 4 times; and antibacterial infrared heating nylon fibers were obtained.

[0028] Example 2

[0029] (1) Nitrogen was introduced into the reaction vessel, 10 mL of N,N-dimethylformamide, 4 mmol of 2,2'-diamino-N-methyldiethylamine, 4.4 mmol of dodecanedioyl dichloride, and 4.4 mmol of triethylamine were added in an ice bath, and then stirred for reaction at room temperature for 12 h. N,N-dimethylformamide was removed by vacuum distillation, and the mixture was washed with acetone and dried to obtain a modifier precursor.

[0030] (2) Add 30 mL of ethanol, 2 g of the modifier precursor, 15 mL of water, and 0.5 g of chloroacetic acid to a reaction vessel equipped with a condenser reflux tube, heat to 85° C., stir and react for 24 hours, heat and stir to evaporate, precipitate, cool in an ice bath, filter, wash with acetone, and dry to obtain a polycarboxyl quaternary ammonium salt modifier.

[0031] (3) Add 250 mL of water and 20 g of tourmaline powder to a reaction container, place it in an ultrasonic instrument for ultrasonic dispersion, then add 2.5 g of a polycarboxyl quaternary ammonium salt modifier, heat to 55° C., stir for surface modification for 6 h, filter, wash with water, and dry to obtain modified tourmaline.

[0032] (4) 1 kg of nylon 6 and 2 g of modified tourmaline were added into a spinning machine for melt spinning, with a screw temperature of 245°C and a screw speed of 100 r / min; the fibers were stretched by the stretching rollers of a hot stretching device at a temperature of 120°C and a stretching ratio of 4 times; and antibacterial infrared heating nylon fibers were obtained.

[0033] Example 3

[0034] (1) Nitrogen was introduced into the reaction vessel, 8 mL of N,N-dimethylformamide, 4 mmol of 2,2'-diamino-N-methyldiethylamine, 3.6 mmol of 1,8-dioctanoyl chloride, and 4 mmol of triethylamine were added in an ice bath, and then stirred for reaction at room temperature for 18 h. N,N-dimethylformamide was removed by distillation under reduced pressure, and the mixture was washed with acetone and dried to obtain a modifier precursor.

[0035] (2) Add 25 mL of ethanol, 2 g of the modifier precursor, 15 mL of water, and 0.8 g of chloroacetic acid to a reaction vessel equipped with a condenser reflux tube, heat to 80° C., stir and react for 24 hours, heat and stir to evaporate, precipitate, cool in an ice bath, filter, wash with acetone, and dry to obtain a polycarboxyl quaternary ammonium salt modifier.

[0036] (3) Add 300 mL of water and 20 g of tourmaline powder to a reaction container, place it in an ultrasonic instrument for ultrasonic dispersion, then add 4 g of polycarboxyl quaternary ammonium salt modifier, heat to 55° C., stir for surface modification for 8 h, filter, wash with water, and dry to obtain modified tourmaline.

[0037] (4) 1 kg of nylon 6 and 2 g of modified tourmaline were added into a spinning machine for melt spinning, with a screw temperature of 250°C and a screw speed of 80 r / min; the fibers were stretched by a stretching roller of a hot stretching device at a temperature of 115°C and a stretching ratio of 3 times; and antibacterial infrared heating nylon fibers were obtained.

[0038] Example 4

[0039] (1) Nitrogen was introduced into the reaction vessel, and 10 mL of N,N-dimethylformamide, 4 mmol of 2,2'-diamino-N-methyldiethylamine, 4.4 mmol of azelaic acid chloride, and 4.4 mmol of triethylamine were added in an ice bath, and then stirred for reaction at room temperature for 12 h. N,N-dimethylformamide was removed by vacuum distillation, and the mixture was washed with acetone and dried to obtain a modifier precursor.

[0040] (2) Add 30 mL of ethanol, 2 g of the modifier precursor, 15 mL of water, and 0.6 g of chloroacetic acid to a reaction vessel equipped with a condenser reflux tube, heat to 75° C., stir and react for 24 hours, heat and stir to evaporate, precipitate, cool in an ice bath, filter, wash with acetone, and dry to obtain a polycarboxyl quaternary ammonium salt modifier.

[0041] (3) Add 300 mL of water and 20 g of tourmaline powder to a reaction container, place it in an ultrasonic instrument for ultrasonic dispersion, then add 6 g of polycarboxyl quaternary ammonium salt modifier, heat to 50° C., stir for surface modification for 12 h, filter, wash with water, and dry to obtain modified tourmaline.

[0042] (4) 1 kg of nylon 6 and 2 g of modified tourmaline were added into a spinning machine for melt spinning, with a screw temperature of 255°C and a screw speed of 100 r / min; the fibers were stretched by the stretching rollers of a hot stretching device at a temperature of 120°C and a stretching ratio of 3.5 times; and antibacterial infrared heating nylon fibers were obtained.

[0043] Example 5

[0044] (1) Modified tourmaline was prepared according to the method of Example 1.

[0045] (2) 1 kg of nylon 6 and 10 g of modified tourmaline were added into a spinning machine for melt spinning, with a screw temperature of 250°C and a screw speed of 100 r / min; the fibers were stretched by the stretching rollers of a hot stretching device at a temperature of 120°C and a stretching ratio of 4 times; and antibacterial infrared heating nylon fibers were obtained.

[0046] Example 6

[0047] (1) Modified tourmaline was prepared according to the method of Example 1.

[0048] (2) 1 kg of nylon 6 and 20 g of modified tourmaline were added into a spinning machine for melt spinning, with a screw temperature of 250°C and a screw speed of 100 r / min; the fibers were stretched by the stretching rollers of a hot stretching device at a temperature of 120°C and a stretching ratio of 4 times; and antibacterial infrared heating nylon fibers were obtained.

[0049] Comparative Example 1

[0050] (1) 1 kg of nylon 6 was added into a spinning machine for melt spinning, with a screw temperature of 250° C. and a screw speed of 100 r / min; the fibers were stretched by a stretching roller of a hot stretching device at a temperature of 120° C. and a stretching ratio of 4 times; and antibacterial infrared heating nylon fibers were obtained.

[0051] Comparative Example 2

[0052] (1) 1 kg of nylon 6 and 2 g of tourmaline powder were added into a spinning machine for melt spinning, with a screw temperature of 250° C. and a screw speed of 100 r / min; the fibers were stretched by a stretching roller of a hot stretching device at a temperature of 120° C. and a stretching ratio of 4 times; and antibacterial infrared heating nylon fibers were obtained.

[0053] Comparative Example 3

[0054] (1) Nitrogen was introduced into the reaction vessel, 10 mL of N,N-dimethylformamide, 4 mmol of 2,2'-diamino-N-methyldiethylamine, 4 mmol of sebacic acid chloride, and 4.4 mmol of triethylamine were added in an ice bath, and then stirred for reaction at room temperature for 12 h. N,N-dimethylformamide was removed by vacuum distillation, and the mixture was washed with acetone and dried to obtain a modifier precursor.

[0055] (2) Add 20 mL of ethanol, 2 g of the modifier precursor, 15 mL of water, and 0.6 g of ethyl chloride to a reaction vessel equipped with a condenser reflux tube, heat to 75° C., stir and react for 24 hours, heat and stir to evaporate, precipitate, cool in an ice bath, filter, wash with acetone, and dry to obtain a polyquaternary ammonium salt modifier.

[0056] (3) Add 200 mL of water and 20 g of tourmaline powder into a reaction container, place it in an ultrasonic instrument for ultrasonic dispersion, then add 1 g of a polyquaternary ammonium salt modifier, heat to 40° C., stir for surface modification for 8 h, filter, wash with water, and dry to obtain modified tourmaline.

[0057] (4) 1 kg of nylon 6 and 2 g of modified tourmaline were added into a spinning machine for melt spinning, with a screw temperature of 250°C and a screw speed of 100 r / min; the fibers were stretched by the stretching rollers of a hot stretching device at a temperature of 120°C and a stretching ratio of 4 times; and antibacterial infrared heating nylon fibers were obtained.

[0058] Comparative Example 4

[0059] (1) Add 200 mL of water and 20 g of tourmaline powder into a reaction container, place it in an ultrasonic instrument for ultrasonic dispersion, then add 1 g of polyacrylic acid, heat to 40° C., stir for surface modification for 8 h, filter, wash with water, and dry to obtain modified tourmaline.

[0060] (2) 1 kg of nylon 6 and 2 g of modified tourmaline were added into a spinning machine for melt spinning, with a screw temperature of 250°C and a screw speed of 100 r / min; the fibers were stretched by the stretching rollers of a hot stretching device at a temperature of 120°C and a stretching ratio of 4 times; and antibacterial infrared heating nylon fibers were obtained.

[0061] The breaking strength and breaking elongation of nylon fiber were tested according to GB T 14344-2008 method.

[0062] The far-infrared performance of the fiber is tested according to the GB / T 30127-2013 method.

[0063] The test results of breaking strength, elongation and far-infrared emissivity are shown in Table 1.

[0064] Table 1: Breaking strength, elongation and far infrared emissivity tests

[0065]

[0066] As shown in Table 1, the tourmaline powder of Examples 1-6 is modified by polycarboxyl quaternary ammonium salt, and polyamide molecular chains are introduced on the surface, and nylon 6 also has polyamide molecular chains, so that the modified tourmaline powder and nylon 6 have good compatibility, improve the dispersibility of tourmaline powder in nylon fiber, and the tourmaline powder has no significant adverse effect on the mechanical properties of the fiber after co-spinning. Compared with Comparative Example 1, the fiber of Examples 1-6 still has good breaking strength and breaking elongation. In addition, the tourmaline powder is evenly dispersed in the fiber matrix, which significantly improves the far-infrared emissivity of the fiber and can give the fiber good infrared heating performance.

[0067] In Comparative Example 2, the compatibility of tourmaline powder with nylon 6 is very poor, and the mechanical properties of the fiber are greatly affected after the blending spinning, and the breaking strength and elongation at break are significantly reduced. In addition, the dispersibility of tourmaline powder in nylon fiber is poor, resulting in the far-infrared emissivity of the fiber being lower than that of the embodiments.

[0068] Compared with Example 1, Comparative Example 3 uses ethyl chloride and a modifier precursor to carry out a quaternization reaction, and the obtained polyquaternary ammonium salt does not contain a carboxyl group, is difficult to interact with the surface of the tourmaline micropowder, and cannot play a good role in surface modification. After filtering and washing with water, the polyquaternary ammonium salt will be eluted from the surface of the tourmaline micropowder, resulting in no effective surface modification of the tourmaline micropowder, and the compatibility of the tourmaline micropowder with nylon 6 is still very poor. After co-spinning, the mechanical properties of the fiber are greatly affected, and the breaking strength and elongation at break are significantly reduced. In addition, the dispersibility of the tourmaline micropowder in the nylon fiber is poor, and the far-infrared emissivity of the fiber is lower than that of Example 1.

[0069] Compared with Example 1, Comparative Example 4 uses conventional polyacrylic acid to modify the surface of tourmaline powder, but the breaking strength, elongation at break and far-infrared emissivity of the fiber are lower, mainly because polyacrylic acid does not contain polyamide molecular chains, and the compatibility between polyacrylic acid and nylon 6 is less than the compatibility between the polycarboxyl quaternary ammonium salt modifier and nylon 6, which makes the compatibility of the tourmaline powder modified by polyacrylic acid with nylon 6 lower than that of the modified tourmaline in Example 1, and the breaking strength, elongation at break and far-infrared emissivity after blended reverse spinning are lower than those in Example 1.

[0070] The antibacterial property was tested according to GB / T 20944.3-2008. The test bacteria were Staphylococcus aureus, Escherichia coli and Candida albicans. Antibacterial rate = (WQ) / W×100%.

[0071] W is the average value of the viable bacteria concentration in the flask after 18 hours of oscillation contact of the control sample (CFU / mL). The control sample is the nylon fiber prepared in Comparative Example 1.

[0072] Q is the average value of the viable bacterial concentration in the flask after 18 h of oscillating contact with the antimicrobial fiber product (CFU / mL).

[0073] The antibacterial rate test results are shown in Table 2.

[0074] Table 2: Antibacterial rate test

[0075]

[0076] It can be seen from Table 2 that after the tourmaline powder of Examples 1-6 is modified by a polycarboxyl quaternary ammonium salt modifier, a large number of antibacterial quaternary ammonium salt groups are introduced on its surface. After being blended with nylon 6 and spun, the quaternary ammonium salt groups are evenly dispersed in the fiber matrix, giving the nylon fiber excellent antibacterial properties.

[0077] The tourmaline powder surfaces of Comparative Examples 2, 3 and 4 do not contain quaternary ammonium salt groups, the antibacterial rate of the fiber is very low, and the antibacterial performance is very poor. The antibacterial rate of Comparative Example 3 is slightly higher, which may be because the polycarboxyl quaternary ammonium salt modifier on the tourmaline surface is not completely washed away, and a small amount of polycarboxyl quaternary ammonium salt modifier remains.

[0078] The antibacterial infrared heating nylon fiber prepared in each embodiment of the present invention can be blended with wool fiber, acrylic fiber or polyester fiber to produce antibacterial and infrared heating blended fabrics.

[0079] The above embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A method for preparing an antibacterial and infrared heating blended fabric, characterized in that: The antibacterial and infrared heating blended fabric is blended from antibacterial infrared heating nylon fiber and a second fiber; The preparation method of the antibacterial infrared heating nylon fiber comprises the following steps: Step S1, adding water and tourmaline powder into a reaction container, placing the mixture in an ultrasonic instrument for ultrasonic dispersion, then adding a polycarboxyl quaternary ammonium salt modifier, stirring for surface modification, filtering, washing, and drying to obtain modified tourmaline; Step S2, adding nylon 6 and modified tourmaline into a spinning machine for melt spinning, and stretching through a stretching roller of a hot stretching device to obtain antibacterial infrared heating nylon fiber.

2. The method for preparing the antibacterial and infrared heating blended fabric according to claim 1, characterized in that: The second fiber is wool fiber, acrylic fiber or polyester fiber.

3. The method for preparing the antibacterial and infrared heating blended fabric according to claim 1, characterized in that: In the step S1, the mass of the polycarboxyl quaternary ammonium salt modifier is 5-30% of the mass of the tourmaline powder.

4. The method for preparing the antibacterial and infrared heating blended fabric according to claim 1, characterized in that: In the step S1, the surface modification is performed at a temperature of 40-55° C. for 6-12 hours.

5. The method for preparing the antibacterial and infrared heating blended fabric according to claim 1, characterized in that: In the step S1, the mass of the modified tourmaline is 0.2-2% of the mass of nylon 6.

6. The method for preparing the antibacterial and infrared heating blended fabric according to claim 1, characterized in that: During the melt spinning, the screw temperature is 245-255° C., and the screw speed is 80-100 r / min; the temperature during stretching is 115-120° C., and the stretching ratio is 3-4 times.

7. The method for preparing the antibacterial and infrared heating blended fabric according to claim 1, characterized in that: The preparation method of the polycarboxyl quaternary ammonium salt modifier comprises: (1) nitrogen is introduced into a reaction vessel, and N,N-dimethylformamide, 2,2'-diamino-N-methyldiethylamine, alkyl diacyl chloride, and triethylamine in a molar ratio of 1:(0.9-1.1):(1-1.1) are added in an ice bath, and then stirred for reaction at room temperature for 12-18 hours, and then distilled under reduced pressure, washed, and dried to obtain a modifier precursor; (2) Add ethanol, modifier precursor, water, and chloroacetic acid to a reaction vessel equipped with a condenser reflux tube, heat to 75-85° C., stir and react for 18-24 hours, heat and stir to volatilize, cool and filter, wash, and dry to obtain a polycarboxyl quaternary ammonium salt modifier.

8. The method for preparing the antibacterial and infrared heating blended fabric according to claim 7, characterized in that: The alkyl diacyl chloride in (1) is 1,8-dioctanoyl chloride, azelayl chloride, sebacoyl chloride or dodecanedioyl chloride.

9. The method for preparing the antibacterial and infrared heating blended fabric according to claim 7, characterized in that: The mass of chloroacetic acid in (2) is 25-40% of the mass of the modifier precursor.

10. An antibacterial and infrared heating blended fabric obtained by the preparation method according to any one of claims 1 to 9.

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