Biomass antibacterial sweat-absorbing fabric and preparation method thereof

Abstract

The application provides a biomass antibacterial sweat-absorbing fabric and a preparation method thereof, and belongs to the technical field of fabrics. First, raw materials are mixed, and then spinning and weaving are performed to obtain a textile fabric; wherein the raw materials include 20-50 parts of hemp fibers, 15-40 parts of bamboo fibers, 10-30 parts of polyester fibers, 5-15 parts of modified particles, and 3-10 parts of sodium diatomite; then the textile fabric is immersed in a finishing liquid, and after being taken out, drying and washing are performed to obtain the biomass antibacterial sweat-absorbing fabric. The hemp fibers, the bamboo fibers and the polyester fibers are used as raw materials, and the synthetic fibers and the natural fibers are mixed, the hemp fibers and the bamboo fibers make the fabric have good moisture absorption and air permeability, and the polyester fibers ensure that the fabric has good strength and wear resistance. The moisture absorption and the antibacterial performance of the fabric are further improved by introducing the modified particles, and the modified particles can be combined with the fibers to form an antibacterial functional film on the surface of the fibers.

Description

Technical Field

[0001] This invention relates to the field of fabric technology, and in particular to a biomass antibacterial and sweat-absorbing fabric and its preparation method. Background Technology

[0002] As people's demands for clothing comfort and functionality continue to increase, moisture-wicking and antibacterial properties have become important indicators for fabrics. Currently, most moisture-wicking fabrics on the market rely on synthetic fibers (such as polyester fibers). Although polyester fibers have good wrinkle resistance and abrasion resistance, their moisture absorption is poor, which can easily lead to body odor when worn. However, they also have certain limitations in terms of moisture absorption, breathability, and environmental friendliness.

[0003] In addition, existing antibacterial fabrics mostly use chemical antibacterial agents such as silver nanoparticles, copper nanoparticles or quaternary ammonium salts. Although they have good antibacterial effects, they have problems such as high cost, easy oxidation and discoloration, and environmental unfriendliness. Some antibacterial fabrics can still maintain antibacterial properties after multiple washes, but their moisture-wicking function is often limited.

[0004] Bamboo and hemp fibers are widely used in the textile industry due to their natural moisture absorption and good breathability. However, fabrics made solely from bamboo or hemp fibers still have shortcomings in terms of antibacterial and moisture absorption properties. For example, while bamboo fiber has some antibacterial properties, its effectiveness is limited, and bacteria easily grow in humid environments. Hemp fiber, while highly absorbent, has poor antibacterial performance and is prone to degradation at high temperatures. Therefore, researching a biomass antibacterial and sweat-wicking fabric and its preparation method is of great significance. Summary of the Invention

[0005] The purpose of this invention is to provide a biomass antibacterial and sweat-absorbing fabric and its preparation method, so as to solve the problem of poor antibacterial and sweat-absorbing properties of existing fabrics.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solution:

[0007] This invention provides a method for preparing a biomass antibacterial and sweat-absorbing fabric, comprising the following steps:

[0008] (1) After mixing the raw materials, spin and weave them to obtain textile fabric;

[0009] The raw materials include 20-50 parts hemp fiber, 15-40 parts bamboo fiber, 10-30 parts polyester fiber, 5-15 parts modified granules, and 3-10 parts sodium alginate.

[0010] (2) Immerse the textile fabric in the finishing solution, take it out, dry it, and wash it with water to obtain a biomass antibacterial and sweat-absorbing fabric.

[0011] Preferably, the modified particles are prepared by the following method:

[0012] S1: Immerse diatomaceous earth in hydrochloric acid solution to obtain acid-etched diatomaceous earth;

[0013] S2: After mixing acid-etched diatomaceous earth, silane coupling agent and solvent, the mixture is subjected to ultrasonic treatment and drying to obtain modified diatomaceous earth;

[0014] S3: Diatomaceous earth and zinc oxide are mixed and then ball-milled to obtain modified particles.

[0015] Preferably, in step S1, the solid-liquid ratio of the diatomaceous earth and the hydrochloric acid solution is 1g:5~15mL, wherein the concentration of the hydrochloric acid solution is 1~3wt.%; the immersion temperature is 60~80℃, and the immersion time is 1~3h.

[0016] Preferably, in step S2, the mass ratio of the acid-etched diatomaceous earth, silane coupling agent, and solvent is 5:1~10:80~120; the ultrasonic treatment temperature is 60~80℃, and the time is 1~2h.

[0017] Preferably, in step S3, the mass ratio of the modified diatomaceous earth to zinc oxide is 1:0.3~0.6; the ball milling speed is 200~400 rpm; and the ball milling time is 2~6 h.

[0018] Preferably, the finishing solution is composed of: 5-15 parts chitosan, 8-18 parts Scutellaria baicalensis extract, 2-3 parts tea polyphenols, 1-2 parts citric acid, 5-7 parts polyethylene glycol, 20-25 parts ethanol, and 100-110 parts water.

[0019] Preferably, the preparation method of the Scutellaria baicalensis extract is as follows: Scutellaria baicalensis and solvent are mixed and stirred, ultrasonically treated, and compressed and separated to obtain the Scutellaria baicalensis extract.

[0020] Preferably, the solvent is a mixture of water and ethanol, wherein the volume ratio of water to ethanol is 1:0.4~0.6; and the mass-volume ratio of Scutellaria baicalensis to the solvent is 1g:10~20mL.

[0021] Preferably, the ultrasonic treatment has a power of 300~500W, a time of 1~2h, and a temperature of 30~40℃.

[0022] The present invention also provides a biomass antibacterial and sweat-absorbing fabric prepared by the above-described method.

[0023] The beneficial effects of this invention are:

[0024] The main raw materials for the fabric prepared by this invention are hemp fiber, bamboo fiber, and polyester fiber. The synthetic fiber and natural fiber are mixed. The hemp fiber and bamboo fiber give the fabric good moisture absorption and breathability, while the polyester fiber ensures the fabric's good strength and abrasion resistance.

[0025] This invention further enhances the moisture absorption and antibacterial properties of the fabric by introducing modified particles. The modified particles can combine with the fibers to form an antibacterial functional film on the surface of the fibers.

[0026] This invention introduces a finishing solution, and in particular, the introduction of Scutellaria baicalensis extract in the finishing solution can effectively inhibit bacterial growth. Detailed Implementation

[0027] This invention provides a method for preparing a biomass antibacterial and sweat-absorbing fabric, comprising the following steps:

[0028] (1) After mixing the raw materials, spin and weave them to obtain textile fabric;

[0029] The raw materials include 20-50 parts hemp fiber, 15-40 parts bamboo fiber, 10-30 parts polyester fiber, 5-15 parts modified granules, and 3-10 parts sodium alginate.

[0030] (2) Immerse the textile fabric in the finishing solution, take it out, dry it, and wash it with water to obtain a biomass antibacterial and sweat-absorbing fabric.

[0031] In this invention, the method for preparing the modified particles is as follows:

[0032] S1: Immerse diatomaceous earth in hydrochloric acid solution to obtain acid-etched diatomaceous earth;

[0033] S2: After mixing acid-etched diatomaceous earth, silane coupling agent and solvent, the mixture is subjected to ultrasonic treatment and drying to obtain modified diatomaceous earth;

[0034] S3: Diatomaceous earth and zinc oxide are mixed and then ball-milled to obtain modified particles.

[0035] In this invention, in step S1, the solid-liquid ratio of the diatomaceous earth and the hydrochloric acid solution is 1g:5~15mL, preferably 1g:8~12mL, and more preferably 1g:10mL; wherein the concentration of the hydrochloric acid solution is 1~3wt.%, preferably 2wt.%; the immersion temperature is 60~80℃, preferably 65~75℃, and more preferably 70℃; and the time is 1~3h, preferably 1.5~2.5h, and more preferably 2h.

[0036] In this invention, in step S2, the mass ratio of the acid-etching diatomaceous earth, silane coupling agent, and solvent is 5:1~10:80~120, preferably 5:3~8:90~110, and more preferably 5:5~6:100; the temperature of the ultrasonic treatment is 60~80℃, preferably 65~75℃, and more preferably 70℃, and the time is 1~2h, preferably 1.5h.

[0037] In this invention, in step S3, the mass ratio of the modified diatomaceous earth to zinc oxide is 1:0.3~0.6, preferably 1:0.4~0.5; the ball milling speed is 200~400 rpm, preferably 250~350 rpm, more preferably 300 rpm; the ball milling time is 2~6 h, preferably 3~5 h, more preferably 4 h.

[0038] In this invention, the finishing solution is composed of: 5-15 parts chitosan, 8-18 parts Scutellaria baicalensis extract, 2-3 parts tea polyphenols, 1-2 parts citric acid, 5-7 parts polyethylene glycol, 20-25 parts ethanol, and 100-110 parts water.

[0039] In this invention, the amount of chitosan added to the finishing solution is preferably 8-12 parts, more preferably 10 parts; the amount of Scutellaria baicalensis extract added is preferably 10-15 parts, more preferably 12 parts; the amount of tea polyphenols added is preferably 3 parts; the amount of citric acid added is preferably 2 parts; the amount of polyethylene glycol added is preferably 6 parts; the amount of ethanol added is preferably 20 parts; and the amount of water added is preferably 100 parts.

[0040] In this invention, the preparation method of the Scutellaria baicalensis extract is as follows: Scutellaria baicalensis and solvent are mixed and stirred, ultrasonically treated, and compressed and separated to obtain the Scutellaria baicalensis extract.

[0041] In this invention, the solvent is a mixture of water and ethanol, wherein the volume ratio of water to ethanol is 1:0.4~0.6, preferably 1:0.5; the mass-volume ratio of Scutellaria baicalensis to the solvent is 1g:10~20mL, preferably 1g:12~18mL, and more preferably 1g:15mL.

[0042] In this invention, the power of the ultrasonic treatment is 300~500W, preferably 350~450W, and more preferably 400W; the time is 1~2h, preferably 1.2~1.8h, and more preferably 1.5h; the temperature is 30~40℃, preferably 32~40℃, and more preferably 35~40℃.

[0043] The present invention also provides a biomass antibacterial and sweat-absorbing fabric prepared by the above-described method.

[0044] The technical solutions provided by the present invention will be described in detail below with reference to the embodiments, but they should not be construed as limiting the scope of protection of the present invention.

[0045] Example 1

[0046] Preparation of modified particles: 5g of diatomaceous earth was immersed in a 2wt.% hydrochloric acid solution with a solid-liquid ratio of 1g:10mL and acid-etched at 70℃ for 1.5h to obtain acid-etched diatomaceous earth; acid-etched diatomaceous earth, silane coupling agent, deionized water and ethanol (mass ratio of deionized water to ethanol of 15:85) were mixed at a mass ratio of 5:6:100 and ultrasonically treated at 70℃ for 1.5h to obtain modified diatomaceous earth; modified diatomaceous earth and zinc oxide powder were mixed at a mass ratio of 1:0.5 and ball-milled at 300rpm for 4h to obtain modified particles.

[0047] Preparation of finishing solution:

[0048] The stems and leaves of Scutellaria baicalensis were dried and pulverized, then added to a mixed solvent of water and ethanol (volume ratio of water to ethanol: 1:0.5), with a mass-volume ratio of 1g:15mL for Scutellaria baicalensis and mixed solvent. After mixing evenly, the mixture was ultrasonically treated at 400W for 1.5h at 40℃, followed by compression separation to obtain filter cake and filtrate. The filtrate was concentrated to obtain Scutellaria baicalensis extract.

[0049] The finishing solution was prepared by mixing 10 parts chitosan, 12 parts Scutellaria baicalensis extract, 3 parts tea polyphenols, 2 parts citric acid, 6 parts polyethylene glycol, 20 parts ethanol, and 100 parts water.

[0050] Mix 30 parts hemp fiber, 25 parts bamboo fiber, 20 parts polyester fiber, 10 parts modified granules, and 5 parts sodium alginate. After mixing evenly, transfer the mixture to a screw extruder for melt extrusion and spin at a speed of 600 m / min. Then, make the spun fibers into warp and weft yarns, with the warp yarn having a linear density of 30 tex and the weft yarn having a linear density of 24 tex. After weaving, obtain the spun fabric with a radial and weft density of 90 and 70 threads / inch, respectively.

[0051] The above-mentioned spun fabric was immersed in a finishing solution with a mass ratio of fabric to finishing solution of 1:30 for 4 hours. After immersion, the fabric was dried and washed to obtain a biomass antibacterial and sweat-absorbing fabric.

[0052] Example 2

[0053] Preparation of modified particles: 5g of diatomaceous earth was immersed in a 2wt.% hydrochloric acid solution with a solid-liquid ratio of 1g:15mL and acid-etched at 60℃ for 2h to obtain acid-etched diatomaceous earth; acid-etched diatomaceous earth, silane coupling agent, deionized water and ethanol (mass ratio of deionized water and ethanol is 15:85) were mixed at a mass ratio of 5:10:100 and ultrasonically treated at 60℃ for 2h to obtain modified diatomaceous earth; modified diatomaceous earth and zinc oxide powder were mixed at a mass ratio of 1:0.6 and ball-milled at 400rpm for 3h to obtain modified particles.

[0054] Preparation of finishing solution:

[0055] The stems and leaves of Scutellaria baicalensis were dried and pulverized, then added to a mixed solvent of water and ethanol (volume ratio of water to ethanol: 1:0.5), with a mass-volume ratio of 1g:20mL for Scutellaria baicalensis and mixed solvent. After mixing evenly, the mixture was ultrasonically treated at 35℃ with a power of 500W for 1 hour, followed by compression and separation to obtain filter cake and filtrate. The filtrate was concentrated to obtain Scutellaria baicalensis extract.

[0056] The finishing solution was prepared by mixing 10 parts chitosan, 12 parts Scutellaria baicalensis extract, 3 parts tea polyphenols, 2 parts citric acid, 6 parts polyethylene glycol, 20 parts ethanol, and 100 parts water.

[0057] Mix 50 parts hemp fiber, 15 parts bamboo fiber, 10 parts polyester fiber, 15 parts modified granules, and 10 parts sodium alginate. After mixing evenly, transfer the mixture to a screw extruder for melt extrusion and spin at a speed of 800 m / min. Then, make the spun fibers into warp and weft yarns, with the warp yarn having a linear density of 30 tex and the weft yarn having a linear density of 24 tex. After weaving, obtain the spun fabric with a radial and weft density of 90 threads / inch and 70 threads / inch, respectively.

[0058] The above-mentioned spun fabric was immersed in a finishing solution with a mass ratio of fabric to finishing solution of 1:30 for 4 hours. After immersion, the fabric was dried and washed to obtain a biomass antibacterial and sweat-absorbing fabric.

[0059] Example 3

[0060] Preparation of modified particles: 5g of diatomaceous earth was immersed in a 2wt.% hydrochloric acid solution with a solid-liquid ratio of 1g:5mL and acid-etched at 80℃ for 1h to obtain acid-etched diatomaceous earth; acid-etched diatomaceous earth, silane coupling agent, deionized water and ethanol (mass ratio of deionized water and ethanol is 15:85) were mixed at a mass ratio of 5:1:100 and ultrasonically treated at 80℃ for 1h to obtain modified diatomaceous earth; modified diatomaceous earth and zinc oxide powder were mixed at a mass ratio of 1:0.4 and ball-milled at 200rpm for 5h to obtain modified particles.

[0061] Preparation of finishing solution:

[0062] The stems and leaves of Scutellaria baicalensis were dried and pulverized, then added to a mixed solvent of water and ethanol (volume ratio of water to ethanol was 1:0.5), with a mass-volume ratio of 1g to 10mL for Scutellaria baicalensis and mixed solvent. After mixing evenly, the mixture was ultrasonically treated at 300W for 2 hours at 30℃, followed by compression and separation to obtain filter cake and filtrate. The filtrate was then concentrated to obtain Scutellaria baicalensis extract.

[0063] The finishing solution was prepared by mixing 10 parts chitosan, 12 parts Scutellaria baicalensis extract, 3 parts tea polyphenols, 2 parts citric acid, 6 parts polyethylene glycol, 20 parts ethanol, and 100 parts water.

[0064] Mix 20 parts hemp fiber, 40 parts bamboo fiber, 20 parts polyester fiber, 5 parts modified granules, and 3 parts sodium alginate. After mixing evenly, transfer the mixture to a screw extruder for melt extrusion and spin at a speed of 700 m / min. Then, make the spun fibers into warp and weft yarns, with the warp yarn having a linear density of 30 tex and the weft yarn having a linear density of 24 tex. After weaving, obtain the spun fabric with a radial and weft density of 90 threads / inch and 70 threads / inch, respectively.

[0065] The above-mentioned spun fabric was immersed in a finishing solution with a mass ratio of fabric to finishing solution of 1:30 for 4 hours. After immersion, the fabric was dried and washed to obtain a biomass antibacterial and sweat-absorbing fabric.

[0066] Comparative Example 1

[0067] Preparation of modified particles: 5g of diatomaceous earth was immersed in a 2wt.% hydrochloric acid solution with a solid-liquid ratio of 1g:10mL and acid-etched at 70℃ for 1.5h to obtain acid-etched diatomaceous earth; acid-etched diatomaceous earth, silane coupling agent, deionized water and ethanol (mass ratio of deionized water to ethanol of 15:85) were mixed at a mass ratio of 5:6:100 and ultrasonically treated at 70℃ for 1.5h to obtain modified diatomaceous earth; modified diatomaceous earth and zinc oxide powder were mixed at a mass ratio of 1:0.5 and ball-milled at 300rpm for 4h to obtain modified particles.

[0068] Mix 30 parts hemp fiber, 25 parts bamboo fiber, 20 parts polyester fiber, 10 parts modified granules, and 5 parts sodium alginate. After mixing evenly, transfer the mixture to a screw extruder for melt extrusion and spin at a speed of 600 m / min. Then, make the spun fibers into warp and weft yarns, with the warp yarn having a linear density of 30 tex and the weft yarn having a linear density of 24 tex. After weaving, obtain the spun fabric with a radial and weft density of 90 and 70 threads / inch, respectively.

[0069] Comparative Example 2

[0070] Preparation of finishing solution:

[0071] The stems and leaves of Scutellaria baicalensis were dried and pulverized, then added to a mixed solvent of water and ethanol (volume ratio of water to ethanol: 1:0.5), with a mass-volume ratio of 1g:20mL for Scutellaria baicalensis and mixed solvent. After mixing evenly, the mixture was ultrasonically treated at 35℃ with a power of 500W for 1 hour, followed by compression and separation to obtain filter cake and filtrate. The filtrate was concentrated to obtain Scutellaria baicalensis extract.

[0072] The finishing solution was prepared by mixing 10 parts chitosan, 12 parts Scutellaria baicalensis extract, 3 parts tea polyphenols, 2 parts citric acid, 6 parts polyethylene glycol, 20 parts ethanol, and 100 parts water.

[0073] Mix 30 parts hemp fiber, 25 parts bamboo fiber, 20 parts polyester fiber, and 5 parts sodium alginate. After mixing evenly, transfer the mixture to a screw extruder for melt extrusion and spin at a speed of 600 m / min. Then, make the spun fibers into warp and weft yarns, with the warp yarn having a linear density of 30 tex and the weft yarn having a linear density of 24 tex. After weaving, obtain the spun fabric with a radial and weft density of 90 and 70 threads / inch, respectively.

[0074] The above-mentioned spun fabric was immersed in a finishing solution with a mass ratio of fabric to finishing solution of 1:30 for 4 hours. After immersion, the fabric was dried and washed to obtain a biomass antibacterial and sweat-absorbing fabric.

[0075] The fabrics prepared in Examples 1-3 and Comparative Examples 1-2 were tested for antibacterial activity against Escherichia coli and Staphylococcus aureus according to the method in GB / T20944.3-2008. The fabrics were tested after 0 washes. The test results are shown in Table 1.

[0076] Table 1. Results of antibacterial test on fabric after 0 washes

[0077]

[0078] As can be seen from Table 1, the fabric prepared by adding modified particles to the raw materials and then impregnating them with finishing liquid has excellent antibacterial effect, with an antibacterial rate of 99.98% against Escherichia coli and 99.58% against Staphylococcus aureus.

[0079] After washing the fabric 100 times, its antibacterial properties were tested again. The results are shown in Table 2.

[0080] Table 2. Antibacterial test results of fabric after 100 washes

[0081]

[0082] As can be seen from Table 2, the fabric of the present invention has excellent antibacterial properties after 100 washes. The antibacterial rate of Example 1 against Escherichia coli is 98.12%, and the antibacterial rate against Staphylococcus aureus is 97.96%.

[0083] The moisture absorption properties of the fabrics in Examples 1-3 and Comparative Examples 1-2 were tested according to GB / T 21655.1-2023 standard, and the results are shown in Table 3:

[0084] Table 3 Results of moisture absorption performance test

[0085]

[0086] As can be seen from Table 3, the fabric prepared by the present invention has good moisture absorption, up to 378.2%.

[0087] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for preparing a biomass antibacterial and sweat-absorbing fabric, characterized in that, Includes the following steps: (1) After mixing the raw materials, spin and weave them to obtain textile fabric; The raw materials include 20-50 parts hemp fiber, 15-40 parts bamboo fiber, 10-30 parts polyester fiber, 5-15 parts modified granules, and 3-10 parts sodium alginate. The method for preparing the modified particles is as follows: S1: Immerse diatomaceous earth in hydrochloric acid solution to obtain acid-etched diatomaceous earth; S2: After mixing acid-etched diatomaceous earth, silane coupling agent and solvent, the mixture is subjected to ultrasonic treatment and drying to obtain modified diatomaceous earth; S3: Diatomaceous earth and zinc oxide are mixed and then ball-milled to obtain modified particles; In step S2, the mass ratio of the acid-etching diatomaceous earth, silane coupling agent, and solvent is 5:1~10:80~120; the ultrasonic treatment temperature is 60~80℃, and the time is 1~2h. In step S3, the mass ratio of the modified diatomaceous earth to zinc oxide is 1:0.3~0.6; the ball milling speed is 200~400 rpm, and the ball milling time is 2~6 h; (2) Immerse the textile fabric in the finishing solution, take it out, dry it, and wash it with water to obtain a biomass antibacterial and sweat-absorbing fabric. The finishing solution consists of: 5-15 parts chitosan, 8-18 parts Scutellaria baicalensis extract, 2-3 parts tea polyphenols, 1-2 parts citric acid, 5-7 parts polyethylene glycol, 20-25 parts ethanol, and 100-110 parts water.

2. The method for preparing the biomass antibacterial and sweat-absorbing fabric according to claim 1, characterized in that, In step S1, the solid-liquid ratio of the diatomaceous earth and the hydrochloric acid solution is 1g:5~15mL, wherein the concentration of the hydrochloric acid solution is 1~3wt.%; the immersion temperature is 60~80℃, and the immersion time is 1~3h.

3. The method for preparing the biomass antibacterial and sweat-absorbing fabric according to claim 1, characterized in that, The preparation method of the Scutellaria baicalensis extract is as follows: Scutellaria baicalensis and solvent are mixed and stirred, ultrasonically treated, and compressed and separated to obtain the Scutellaria baicalensis extract.

4. The method for preparing the biomass antibacterial and sweat-absorbing fabric according to claim 3, characterized in that, The solvent is a mixture of water and ethanol, wherein the volume ratio of water to ethanol is 1:0.4~0.6; the mass-volume ratio of Scutellaria baicalensis to the solvent is 1g:10~20mL.

5. The method for preparing the biomass antibacterial and sweat-absorbing fabric according to claim 3 or 4, characterized in that, The ultrasonic treatment has a power of 300~500W, a time of 1~2h, and a temperature of 30~40℃.

6. The biomass antibacterial and sweat-absorbing fabric prepared by the method of any one of claims 1 to 5.

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