An antibacterial infrared magnetic health care fabric

Abstract

This invention relates to a preparation process for an antibacterial infrared-modified magnetic health care fabric. The preparation process of the antibacterial and fatigue-relieving magnetic health care fabric includes: preparation of BFO; preparation of a dispersion of nano-ZnO; preparation of magnetic BFO@ZnO particles; preparation of magnetic fibers; and a spinning process including: opening and cleaning, carding, drawing, roving, spinning, winding, and weaving. This invention utilizes zinc ions (ZnO). 2+ The release of ZnO serves as the main antibacterial mechanism of nano-ZnO. At the same time, coffee carbon fiber has excellent far-infrared emission function. When applied to the skin, it improves human microcirculation and relieves human exercise fatigue. The fabric has the characteristics of antibacterial, fatigue relief, moisture wicking, quick drying and coolness.

Description

Technical Field

[0001] This invention relates to a preparation process for an antibacterial infrared magnetic health care fabric. Background Technology

[0002] With societal progress and improved living standards, low-carbon, environmentally friendly, healthy, and sustainable lifestyles have become central to people's lives. In recent years, with advancements and applications of technology, people have paid more attention to the perfect integration of technology and health, gradually shifting their focus to human health and recovery, and increasingly emphasizing the restorative and functional properties of materials for the body.

[0003] Coffee, along with cocoa and tea, is one of the world's most popular beverages. It boasts a rich aroma, a smooth and mellow taste, and is known for its energizing and fatigue-fighting properties, making it a favorite among many. According to statistics, global coffee consumption reached 15.1303 billion bags in 2015-2016, growing at an average annual rate of 1.3%. However, for a long time, roasted coffee grounds have been largely treated as waste, mostly discarded, landfilled, or incinerated. This massive waste of coffee grounds not only wastes resources but also causes environmental pollution. Coffee carbon fiber, a new type of natural fiber, is produced by carbonizing waste coffee grounds at 1000℃ to create coffee carbon nanoparticles, which are then added to a nylon or polyester solution and spun into fibers. The entire preparation process reduces carbon emissions by 48% compared to bamboo charcoal and 85% compared to coconut charcoal, offering advantages in terms of low carbon and environmental friendliness.

[0004] Furthermore, research indicates that coffee charcoal possesses multiple functions. Due to its ultrafine porous structure, coffee charcoal exhibits excellent antibacterial properties. Additionally, coffee charcoal itself contains both diamond (SP3) and graphite (SP2) structures. When exposed to heat, coffee charcoal emits far-infrared rays and releases negative ions when rubbed against the air.

[0005] Research on the current state of coffee carbon fiber and textiles has provided a preliminary understanding of the properties of coffee carbon fiber, coffee yarn, and their textiles. Coffee carbon textiles possess excellent heat insulation, breathability, antibacterial properties, far-infrared radiation, and negative ion generation. Although there are already application studies focusing on these properties, the development and research of this multifunctional coffee carbon fiber in the field of sports functional textiles is still in its infancy. Therefore, we should make full use of the abundant coffee grounds resources and favorable market conditions to develop seamless knitted sports fabrics, aiming to fill and enrich the functional clothing market and meet the current upgrading demands of people for sports consumption. Summary of the Invention

[0006] The purpose of this invention is to solve the problems of poor antibacterial properties, lack of health benefits, and lack of environmental protection in fabrics, and ultimately obtain fabrics with infrared properties, antibacterial properties, and health benefits.

[0007] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0008] Step 1: BFO Preparation

[0009] Samarium oxide was dissolved in nitric acid to prepare samarium nitrate solution. Then, ferric nitrate and bismuth nitrate (with excess Bi) were added to DMF solution and stirred until the solids were completely dissolved. Next, the samarium nitrate solution was added and stirred until homogeneous. Citric acid was then added and stirred until the solids were completely dissolved. The mixture was then sonicated. Finally, the mixture was placed on a magnetic stirrer and stirred with a magnetic rotor. PVP powder was slowly added and stirred until the PVP was completely dissolved.

[0010] Step 2: Preparation of nano-ZnO dispersion:

[0011] Weigh a certain amount of nano ZnO into a beaker, add distilled water and a certain amount of dispersant, and sonicate at room temperature. Then add ethylene glycol (EG) to the beaker to prepare a dispersion slurry. Continue to sonicate and evaporate to dehydrate, and finally obtain a slurry-type nano ZnO dispersion.

[0012] Step 3: Preparation of magnetic BFO@ZnO particles:

[0013] The nano-ZnO dispersion was mixed with the BFO precursor solution and ultrasonically dispersed to obtain a magnetic BFO@ZnO particle solution.

[0014] Step four: spinning

[0015] Magnetic fibers were prepared using electrospinning.

[0016] Step 5: Weaving

[0017] Different specifications of fabrics are obtained by weaving according to different interlacing ratios and weave structures.

[0018] Preferably, 0.01–0.05 mol of samarium oxide is dissolved in 20–30 ml of nitric acid solution to prepare a 1–2 mol / L samarium nitrate solution for later use. Then, 40–50 ml of LDM solution is taken and 4–8 × 10⁻⁶ mol / L of samarium nitrate solution is added. -3 mol ferric nitrate and 4~8.4×10 -3 Add 0.4-0.8 mL of samarium nitrate solution (Bi element in excess of 5-10%) and stir until the solid is completely dissolved. Then add 4-10 g of citric acid and stir until the solid is completely dissolved. Sonicate the mixture for about 10-20 minutes. Finally, place the mixture on a magnetic stirrer and stir with a magnetic rotor. Slowly add 3-3.5 g of PVP powder and stir until the PVP is completely dissolved to form a BFO solution.

[0019] Preferably, 20-25g of nano-ZnO is weighed using a balance and placed in a 250-500mL beaker. 20-30mL of distilled water and 5-8g of dispersant are added. The mixture is ultrasonically treated at room temperature for 30-40min. Then, 200-240g of ethylene glycol (EG) is added to the beaker to prepare a 10-15%wt dispersion slurry. The mixture is then ultrasonically treated for another 60-70min, followed by evaporation and dehydration to obtain a slurry-type nano-ZnO dispersion.

[0020] As a preferred method, the nano-ZnO dispersion is mixed with the BFO precursor solution and ultrasonically dispersed for 30-40 min to obtain a magnetic BFO@ZnO particle solution.

[0021] As a preferred method, the spinning process is electrospinning with the following parameters: DC voltage of 20~25kV, distance from needle tip to receiving roller of 20~25cm, electric field strength of 1~1.5kV / cm, injection pump speed of 0.5~1mL / h, ambient temperature of 25~30℃, and humidity of 45~50%.

[0022] As a preferred option, the spinning process is as follows:

[0023] (1) Opening and cleaning cotton

[0024] Manual opening is used to tear the fibers evenly and spread them into a layer.

[0025] Coffee carbon fiber contains no impurities, but its strength is relatively low. Using a machine to open and clean the fibers may damage them.

[0026] (2) Carding

[0027] The carding machine cylinder speed is 300~360 r / min, and the licker-in speed is 800~850 r / min.

[0028] The carding process should focus on combing and reducing fiber damage, with the principle of increasing fiber transfer.

[0029] Using this invention, the coffee carbon fiber is finer and has lower strength. By appropriately increasing the carding gap and reducing the licker-in speed, damage to the fiber is reduced, the cotton drop gap is reduced, the fiber is transferred smoothly, and the fiber is prevented from falling into the cylinder and getting entangled and blocking the carding area.

[0030] (3) Combined clauses:

[0031] Coffee charcoal pre-combining: Dry weight: 16g / 3m~17.6g / 5m, using FA306 combing machine.

[0032] Draw ratio: 8~8.5 times; rear zone draw ratio: 1~1.7 times; vehicle speed: 200~210m / min; bell mouth: 3~3.5mm; spacing: 5mm×15mm~7mm×20mm.

[0033] The coffee charcoal and magnetic fiber are rolled together at a speed of 200~210m / min, with a flared opening of 3~3.5mm and a spacing of 5mm×15mm~7mm×16mm.

[0034] (4) Corrugated yarn

[0035] The twist of the blended yarn was determined to be 5~5.5 twists / 10cm, and an FA423 roving frame was selected.

[0036] Among them, the cohesion between coffee carbon fiber and magnetic fiber is poor, so it is important to choose the right roving twist coefficient. If it is too large, it will affect the subsequent fine spinning process and the yarn will not be able to be drawn up. If it is too small, the roving will easily slip and cause unexpected elongation.

[0037] (5) Fine yarn

[0038] Select a smaller back zone draft of 1 to 1.5 times, with a spacing of 1 to 3.0 mm, and V-shaped draft.

[0039] This invention prevents coffee carbon fiber from entangled in the rollers, improves drawing efficiency, reduces additional unevenness, and does not damage the cohesion between fibers.

[0040] (6) Winding tube

[0041] The winding speed is 1000~1200m / min.

[0042] The principle of this invention is "low tension and low speed". The winding process is set to a low speed and low tension to reduce yarn hairiness and the number of yarn breaks. A capacitive electronic yarn clearer is used to reduce yarn defects.

[0043] As a preferred option, the weaving parameters are: thickness 0.7~1.1mm, and weight per square meter 200~260g / m². 2 Transverse density: 100-120 rings / 5cm; longitudinal density: 110-200 rings / 5cm; total density: 500-900 rings / cm 2 . Attached Figure Description

[0044] Figure 1 This is a preparation process for an antibacterial infrared magnetic health care fabric. Detailed Implementation

[0045] Example 1

[0046] Dissolve 0.01 mol of samarium oxide in 20 mL of nitric acid solution to prepare a 1 mol / L samarium nitrate solution for later use. Then take 40 mL of LMF solution and add 4 × 10⁻⁶ mol / L of samarium oxide solution to each solution. -3 mol ferric nitrate and 4×10 -3 Add 1 mol of bismuth nitrate (5% excess Bi) and stir until the solid is completely dissolved. Then add 0.4 mL of samarium nitrate solution and stir until homogeneous. Add 4 g of citric acid and stir until the solid is completely dissolved. Sonicate the mixture for about 10 minutes. Finally, slowly add 3 g of PVP powder and stir until the PVP is completely dissolved to form a BFO solution.

[0047] Weigh 20g of nano ZnO into a 250mL beaker, add 20ml of distilled water and 5g of dispersant, sonicate for 30min, then add 200g of ethylene glycol (EG) to the beaker to prepare a 10%wt dispersion slurry, and continue sonicating for 60min, evaporate and dehydrate, finally obtaining a slurry-type nano ZnO dispersion.

[0048] The nano-ZnO dispersion was mixed with the BFO precursor solution and ultrasonically dispersed for 30 min to obtain a magnetic BFO@ZnO particle solution.

[0049] Spinning: Electrospinning was used with the following parameters: DC voltage of 20kV, distance from needle tip to receiving roller of 20m, electric field strength of 1kV / cm, injection pump speed of 0.5mL / h, ambient temperature of 25℃ and humidity of 45%.

[0050] Spinning process:

[0051] (1) Opening and cleaning cotton

[0052] (2) Carding

[0053] The carding machine cylinder speed is 300 r / min, and the licker-in speed is 800 r / min.

[0054] (3) Combined clauses:

[0055] Coffee charcoal pre-combination: Dry weight: 16g / 3m, using FA306 combing machine.

[0056] Draw ratio: 8 times; rear zone draw ratio: 1 times; vehicle speed: 200 m / min; bell mouth: 3 mm; spacing: 5 mm × 15 mm.

[0057] Coffee charcoal and magnetic fiber are rolled together at a speed of 200m / min, with a flared opening of 3mm and a spacing of 5mm×15mm.

[0058] (4) Corrugated yarn

[0059] The twist of the blended yarn was determined to be 5 twists / 10cm, and an FA423 roving frame was selected.

[0060] (5) Fine yarn

[0061] Choose a smaller back zone drafting size, with a spacing of 1mm, and V-shaped drafting.

[0062] (6) Winding tube

[0063] The winding speed is 1000 m / min.

[0064] Weaving parameters: thickness 0.7mm, weight per square meter 200g / m² 2 Horizontal density 100 rings / 5cm, vertical density 110 rings / 5cm, total density 500 rings / cm 2 .

[0065] Example 2

[0066] Dissolve 0.02 mol of samarium oxide in 24 mL of nitric acid solution to prepare a 1 mol / L samarium nitrate solution for later use. Then take 45 mL of LMF solution and add 5 × 10⁻⁶ mol / L of samarium oxide solution to each solution. -3 mol ferric nitrate and 5×10 -3 Add 0.6 mL of samarium nitrate solution (7% excess Bi) and stir until the solid is completely dissolved. Then add 6 g of citric acid and stir until the solid is completely dissolved. Sonicate the mixture for about 14 minutes. Finally, slowly add 3.2 g of PVP powder and stir until the PVP is completely dissolved to form a BFO solution.

[0067] Weigh 22g of nano ZnO into a 500mL beaker, add 23ml of distilled water and 8g of dispersant, sonicate for 35min, then add 220g of ethylene glycol (EG) to the beaker to prepare a 12%wt dispersion slurry, and continue sonicating for 65min, evaporate and dehydrate, finally obtaining a slurry-type nano ZnO dispersion.

[0068] The nano-ZnO dispersion was mixed with the BFO precursor solution and ultrasonically dispersed for 34 min to obtain a magnetic BFO@ZnO particle solution.

[0069] Spinning: Electrospinning was used with the following parameters: DC voltage of 22kV, distance from needle tip to receiving roller of 22cm, electric field strength of 1.2kV / cm, injection pump speed of 0.6mL / h, ambient temperature of 27℃ and humidity of 47%.

[0070] Spinning process:

[0071] (1) Opening and cleaning cotton

[0072] (2) Carding

[0073] The carding machine cylinder speed is 320 r / min, and the licker-in speed is 810 r / min.

[0074] (3) Combined clauses:

[0075] Coffee charcoal pre-combination: Dry weight: 16.5g / 3m, using FA306 combing machine.

[0076] Draw ratio: 8.3 times; rear draw ratio: 1.4 times; vehicle speed: 205m / min; bell mouth: 3.3mm; spacing: 5mm×18mm.

[0077] The coffee charcoal and magnetic fiber are rolled together at a speed of 206m / min, with a flared opening of 3mm and a spacing of 5mm×15mm.

[0078] (4) Corrugated yarn

[0079] The twist of the blended yarn was determined to be 5 twists / 10cm, and an FA423 roving frame was selected.

[0080] (5) Fine yarn

[0081] Choose a smaller back zone draft of 1.3 times, with a spacing of 2mm, and V-shaped draft.

[0082] (6) Winding tube

[0083] The winding speed is 1100m / min.

[0084] Weaving parameters: thickness 0.8mm, weight per square meter 220g / m² 2 Horizontal density 110 rings / 5cm, vertical density 150 rings / 5cm, total density 600 rings / cm 2 .

[0085] Example 3

[0086] Dissolve 0.04 mol of samarium oxide in 28 mL of nitric acid solution to prepare a 1.5 mol / L samarium nitrate solution. Then take 48 mL of LDM solution and add 7 × 10⁻⁶ mol / L of samarium oxide solution to prepare a 1.5 mol / L samarium nitrate solution. -3 mol ferric nitrate and 8×10 -3 Add 0.7 mL of samarium nitrate solution (8% excess Bi) and stir until the solid is completely dissolved. Then add 8 g of citric acid and stir until the solid is completely dissolved. Sonicate the mixture for approximately 18 minutes. Finally, slowly add 3.4 g of PVP powder and stir until the PVP is completely dissolved to form a BFO solution.

[0087] Weigh 24g of nano ZnO into a 500mL beaker, add 28ml of distilled water and 6g of dispersant, sonicate for 38min, then add 230g of ethylene glycol (EG) to the beaker to prepare a 14%wt dispersion slurry, and continue sonicating for 68min, evaporate and dehydrate, finally obtaining a slurry-type nano ZnO dispersion.

[0088] The nano-ZnO dispersion was mixed with the BFO precursor solution and ultrasonically dispersed for 38 min to obtain a magnetic BFO@ZnO particle solution.

[0089] Spinning: Electrospinning was used with the following parameters: DC voltage of 24kV, distance from needle tip to receiving roller of 24cm, electric field strength of 1.4kV / cm, injection pump speed of 0.8mL / h, ambient temperature of 28℃ and humidity of 48%.

[0090] Spinning process:

[0091] (1) Opening and cleaning cotton

[0092] (2) Carding

[0093] The carding machine cylinder speed is 350 r / min, and the licker-in speed is 840 r / min.

[0094] (3) Combined clauses:

[0095] Coffee charcoal pre-combination: Dry weight: 17g / 5m, FA306 combing machine.

[0096] Draw ratio: 8.5 times; rear draw ratio: 1.7 times; vehicle speed: 208m / min; bell mouth: 3.5mm; spacing: 7mm×20mm.

[0097] The coffee charcoal and magnetic fiber are rolled together at a speed of 208m / min, with a flared opening of 3.5mm and a spacing of 7mm×16mm.

[0098] (4) Corrugated yarn

[0099] The twist of the blended yarn was determined to be 5.5 twists / 10cm, and an FA423 roving frame was selected.

[0100] (5) Fine yarn

[0101] Choose a smaller back zone draft of 1.5 times, a spacing of 3.0 mm, and a V-shaped draft.

[0102] (6) Winding tube

[0103] The winding speed is 1115 m / min.

[0104] Weaving parameters: thickness 1mm, weight per square meter 240g / m² 2Horizontal density 115 rings / 5cm, vertical density 180 rings / 5cm, total density 800 rings / cm 2 .

[0105] Example 4

[0106] Dissolve 0.05 mol of samarium oxide in 30 mL of nitric acid solution to prepare a 2 mol / L samarium nitrate solution for later use. Then take 50 mL of LMF solution and add 8 × 10⁻⁶ mol / L of samarium oxide solution. -3 mol ferric nitrate and 8.4 × 10 -3 Add 1 mol of bismuth nitrate (Bi element in excess of 10%) and stir until the solid is completely dissolved. Then add 0.8 mL of samarium nitrate solution and stir until homogeneous. Next, add 10 g of citric acid and stir until the solid is completely dissolved. Sonicate the mixture for approximately 20 minutes. Finally, slowly add 3.5 g of PVP powder and stir until the PVP is completely dissolved to form a BFO solution.

[0107] Weigh 25g of nano ZnO into a 500mL beaker, add 30ml of distilled water and 8g of dispersant, sonicate for 40min, then add 240g of ethylene glycol (EG) to the beaker to prepare a 15%wt dispersion slurry, and continue sonicating for 70min, evaporate and dehydrate, finally obtaining a slurry-type nano ZnO dispersion.

[0108] The nano-ZnO dispersion was mixed with the BFO precursor solution and ultrasonically dispersed for 40 min to obtain a magnetic BFO@ZnO particle solution.

[0109] Spinning: Electrospinning was used with the following parameters: DC voltage of 25kV, distance from needle tip to receiving roller of 25cm, electric field strength of 1.5kV / cm, injection pump speed of 1mL / h, ambient temperature of 30℃, and humidity of 50%.

[0110] Spinning process:

[0111] (1) Opening and cleaning cotton

[0112] (2) Carding

[0113] The carding machine cylinder speed is 360 r / min, and the licker-in speed is 850 r / min.

[0114] (3) Combined clauses:

[0115] Coffee charcoal pre-combination: Dry weight: 17.6g / 5m, using FA306 combing machine.

[0116] Draw ratio: 8.5 times; rear draw ratio: 1.7 times; vehicle speed: 210m / min; bell mouth: 3.5mm; spacing: 7mm×20mm.

[0117] The coffee charcoal and magnetic fiber are rolled together at a speed of 210m / min, with a flared opening of 3.5mm and a spacing of 7mm×16mm.

[0118] (4) Corrugated yarn

[0119] The twist of the blended yarn was determined to be 5.5 twists / 10cm, and an FA423 roving frame was selected.

[0120] (5) Fine yarn

[0121] Choose a smaller back zone draft of 1.5 times, with a V-shaped draft at 3.0mm intervals.

[0122] (6) Winding tube

[0123] The winding speed is 1200m / min.

[0124] Weaving parameters: thickness 1.1mm, weight per square meter 260g / m² 2 Horizontal density: 120 rings / 5cm; Vertical density: 200 rings / 5cm; Total density: 900 rings / cm 2 .

[0125] Comparative Example 1

[0126] Dissolve 0.01 mol of samarium oxide in 20 mL of nitric acid solution to prepare a 1 mol / L samarium nitrate solution for later use. Then take 40 mL of LMF solution and add 4 × 10⁻⁶ mol / L of samarium oxide solution to each solution. -3 mol ferric nitrate and 4×10 -3 Add 1 mol of bismuth nitrate (5% excess Bi) and stir until the solid is completely dissolved. Then add 0.4 mL of samarium nitrate solution and stir until homogeneous. Add 4 g of citric acid and stir until the solid is completely dissolved. Sonicate the mixture for about 10 minutes. Finally, slowly add 3 g of PVP powder and stir until the PVP is completely dissolved to form a BFO solution.

[0127] Weigh 20g of nano ZnO into a 250mL beaker, add 20ml of distilled water and 5g of dispersant, sonicate for 30min, then add 200g of ethylene glycol (EG) to the beaker to prepare a 10%wt dispersion slurry, and continue sonicating for 60min, evaporate and dehydrate, finally obtaining a slurry-type nano ZnO dispersion.

[0128] The nano-ZnO dispersion was mixed with the BFO precursor solution and ultrasonically dispersed for 30 min to obtain a magnetic BFO@ZnO particle solution.

[0129] Spinning: Electrospinning was used with the following parameters: DC voltage of 20kV, distance from needle tip to receiving roller of 20m, electric field strength of 1kV / cm, injection pump speed of 0.5mL / h, ambient temperature of 25℃ and humidity of 45%.

[0130] Spinning process:

[0131] (1) Opening and cleaning cotton

[0132] (2) Carding

[0133] The carding machine cylinder speed is 300 r / min, and the licker-in speed is 800 r / min.

[0134] (3) Combined clauses:

[0135] Coffee charcoal pre-combination: Dry weight: 16g / 3m, using FA306 combing machine.

[0136] Draw ratio: 8 times; rear zone draw ratio: 1 times; vehicle speed: 200 m / min; bell mouth: 3 mm; spacing: 5 mm × 15 mm.

[0137] Coffee charcoal and magnetic fiber are rolled together at a speed of 200m / min, with a flared opening of 3mm and a spacing of 5mm×15mm.

[0138] (4) Corrugated yarn

[0139] The twist of the blended yarn was determined to be 5 twists / 10cm, and an FA423 roving frame was selected.

[0140] (5) Fine yarn

[0141] Choose a smaller back zone drafting size, with a spacing of 1mm, and V-shaped drafting.

[0142] (6) Winding tube

[0143] The winding speed is 1000 m / min.

[0144] Weaving parameters: thickness 0.7mm, weight per square meter 200g / m² 2 Horizontal density 100 rings / 5cm, vertical density 110 rings / 5cm, total density 500 rings / cm 2 .

[0145] Comparative Example 2

[0146] Dissolve 0.01 mol of samarium oxide in 20 mL of nitric acid solution to prepare a 1 mol / L samarium nitrate solution for later use. Then take 40 mL of LMF solution and add 4 × 10⁻⁶ mol / L of samarium oxide solution to each solution. -3 mol ferric nitrate and 4×10 -3Add 1 mol of bismuth nitrate (5% excess Bi) and stir until the solid is completely dissolved. Then add 0.4 mL of samarium nitrate solution and stir until homogeneous. Add 4 g of citric acid and stir until the solid is completely dissolved. Sonicate the mixture for about 10 minutes. Finally, slowly add 3 g of PVP powder and stir until the PVP is completely dissolved to form a BFO solution.

[0147] Weigh 20g of nano ZnO into a 250mL beaker, add 20ml of distilled water and 5g of dispersant, sonicate for 30min, then add 200g of ethylene glycol (EG) to the beaker to prepare a 10%wt dispersion slurry, and continue sonicating for 60min, evaporate and dehydrate, finally obtaining a slurry-type nano ZnO dispersion.

[0148] The nano-ZnO dispersion was mixed with the BFO precursor solution and ultrasonically dispersed for 30 min to obtain a magnetic BFO@ZnO particle solution.

[0149] Spinning: Electrospinning was used with the following parameters: DC voltage of 20kV, distance from needle tip to receiving roller of 20m, electric field strength of 1kV / cm, injection pump speed of 0.5mL / h, ambient temperature of 25℃ and humidity of 45%.

[0150] Spinning process:

[0151] (1) Opening and cleaning cotton

[0152] (2) Carding

[0153] The carding machine cylinder speed is 300 r / min, and the licker-in speed is 800 r / min.

[0154] (3) Combined clauses:

[0155] Coffee charcoal pre-combination: Dry weight: 16g / 3m, using FA306 combing machine.

[0156] Draw ratio: 8 times; rear zone draw ratio: 1 times; vehicle speed: 200 m / min; bell mouth: 3 mm; spacing: 5 mm × 15 mm.

[0157] Coffee charcoal and magnetic fiber are rolled together at a speed of 200m / min, with a flared opening of 3mm and a spacing of 5mm×15mm.

[0158] (4) Corrugated yarn

[0159] The twist of the blended yarn was determined to be 5 twists / 10cm, and an FA423 roving frame was selected.

[0160] (5) Fine yarn

[0161] Choose a smaller back zone drafting size, with a spacing of 1mm, and V-shaped drafting.

[0162] (6) Winding tube

[0163] The winding speed is 1000 m / min.

[0164] Weaving parameters: thickness 0.7mm, weight per square meter 200g / m² 2 Horizontal density 100 rings / 5cm, vertical density 110 rings / 5cm, total density 500 rings / cm 2 .

[0165] Antibacterial test

[0166] GB / T 20944.3-2008 "Evaluation of Antimicrobial Properties of Textiles - Part 3: Shaking Method" Test Method: *Escherichia coli* and *Staphylococcus aureus* were selected as representative Gram-negative and Gram-positive bacteria, respectively. Fifteen samples were cut into approximately 5mm × 5mm fragments. 0.75g ± 0.05g of each fragment was weighed as one experimental sample. After sterilization, each fragment was placed in one of three flasks containing bacterial suspension and the flasks were sealed. The flasks were then placed on a constant-temperature shaker and shaken at 150 rpm for 18 hours at 24℃ ± 1℃. The bacterial suspension was serially diluted 10-fold in a biosafety cabinet. 1mL of each diluted solution was transferred to a sterile petri dish, spread evenly, sealed with plastic wrap, and then inverted and incubated at 37℃ for 24–48 hours. Finally, the colony count and inhibition rate were determined.

[0167] Infrared performance testing

[0168] (1) First, the sample is conditioned in a constant temperature and humidity environment for 24 hours.

[0169] (2) The laboratory temperature was maintained at 24±2℃ and the relative humidity at 65±3%. To avoid interference from solar far-infrared radiation, the curtains in the laboratory were drawn before the experiment, and only low lighting was provided for normal reading.

[0170] (3) Subjects were required to wear loose-fitting short-sleeved or sleeveless clothing. A black marker was used to mark the test site on the subject's left forearm 7 cm from the elbow crease and 7 cm from the distal radioulnar joint of the wrist, ensuring that the test site remained the same for each test to minimize errors caused by spatial differences. To ensure subjects adapted to the test temperature and stabilized their emotions, they were required to sit quietly in the laboratory for 30 minutes before the test, keeping their left arm still to minimize microcirculation fluctuations caused by movement. After each test, subjects were required to sit quietly for 10 minutes to recover. The flow rate ratio Fh after covering was calculated after the test. Finally, the blood flow promotion factor after covering the sample was calculated as an indicator of the fabric's ability to promote microcirculation.

[0171] (4) Turn on the test instrument and adjust the distance between the main unit of the test instrument and the forearm being tested.

[0172] Negative ion performance test

[0173] Refer to GB / T 30128-2013 "Detection and Evaluation of Negative Ion Generation in Textiles"

[0174] Water wash resistance test

[0175] The test standard for the wash resistance of magnetic fabrics shall be carried out in accordance with the standard method of GB / T3921.1-1997.

[0176] Table 1 Fabric Specifications

[0177] Table 2 Antibacterial properties

[0178] As shown in the table, Example 4 exhibited the best antibacterial effect, achieving an inhibition rate of 99% against both *Escherichia coli* and *Staphylococcus aureus*, demonstrating excellent antibacterial properties. It was found that the 1+2 pseudo-rib knit fabric had the best antibacterial effect, followed by the 1+1 pseudo-plain knit fabric, while the plain weave with added yarn had the worst antibacterial effect. This is because, compared to the 1+2 pseudo-rib knit and 1+1 pseudo-plain knit fabrics, the plain weave with added yarn fabric more easily stores human metabolic waste, providing favorable conditions for the growth and reproduction of microorganisms.

[0179] Table 3 Infrared Performance

[0180] 1 1.145 2 1.156 3 1.178 4 1.894 Comparative Example 1 1.038 Comparative Example 2 0.967

[0181] As shown in the table, Example 4 exhibits the best effect. The added coffee charcoal nanofibers in the fabric promote blood flow, i.e., have a far-infrared function. Furthermore, the higher the coffee charcoal content, the better the blood flow promotion effect. The order is: 1+2 pseudo-rib knit > 1+1 pseudo-plain knit > plain weave with yarn-padded knit. This is because the three fabric structures result in differences in fabric thickness, leading to varying coffee charcoal content within the same area of ​​fabric. Therefore, the 1+2 pseudo-rib knit fabric has the best blood flow promotion effect, followed by the 1+1 pseudo-plain knit fabric, while the plain weave with yarn-padded knit fabric has the worst effect.

[0182] Table 4 Negative Ion Performance

[0183] 1 2578 2 2689 3 2745 4 2867 Comparative Example 1 2216 Comparative Example 2 2064

[0184] Coffee charcoal exhibits good negative ion release properties; the higher the coffee charcoal content, the higher the negative ion generation of the fabric. It was found that fabrics with a 1+2 pseudo-rib knit structure generated the highest negative ion generation, followed by 1+1 pseudo-plain knit fabric, while plain knit fabric with added yarns generated the lowest. This is because the 1+2 pseudo-rib knit fabric is thicker and more porous than the other two structures, resulting in a larger surface area and thus a higher negative ion generation per unit area.

[0185] Table 5. Water wash resistance

[0186] 1 0.67 2 0.72 3 0.8 4 0.84 Comparative Example 1 0.58 Comparative Example 2 0.51

[0187] As shown in the table, Example 4 has the best washability. The magnetic induction intensity of the fabric in the comparative example shows a more obvious downward trend. This is because some of the magnetic powder attached to the surface of the magnetic fabric falls off during the washing process. However, the overall reduction in the magnetic induction intensity of the magnetic fabric is not significant. This indicates that the magnetic powder is firmly bonded to the fiber, and the magnetic powder particles are less lost during the washing process. The magnetic fabric has good washability.

[0188] This specific embodiment is merely an explanation of the present invention and is not intended to limit the present invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A preparation process for an antibacterial infrared magnetic health care fabric, characterized in that: Step 1: BFO Preparation Samarium oxide was dissolved in nitric acid solution to prepare samarium nitrate solution for later use. Then, DMF solution was taken, and ferric nitrate and bismuth nitrate were added separately, with Bi element in excess. The mixture was stirred until the solids were completely dissolved. Next, samarium nitrate solution was added and stirred evenly. Citric acid was then added and stirred until the solids were completely dissolved. The mixture was then sonicated. Finally, the mixture was placed on a magnetic stirrer and stirred with a magnetic rotor. PVP powder was slowly added and stirred until the PVP was completely dissolved. Step 2: Preparation of nano-ZnO dispersion: Weigh a certain amount of nano ZnO into a beaker, add distilled water and a certain amount of dispersant, and sonicate at room temperature. Then add ethylene glycol (EG) to the beaker to prepare a dispersion slurry. Continue to sonicate and evaporate to dehydrate, and finally obtain a slurry-type nano ZnO dispersion. Step 3: Preparation of magnetic BFO@ZnO particles: The nano-ZnO dispersion was mixed with the BFO precursor solution and ultrasonically dispersed to obtain a magnetic BFO@ZnO particle solution. Step 4: Spinning Magnetic fibers were prepared using electrospinning. Step 5: Weaving Different specifications of fabrics are obtained by weaving according to different interlacing ratios and weave structures.

2. The preparation process of an antibacterial infrared magnetic health care fabric according to claim 1, characterized in that: Dissolve 0.01–0.05 mol of samarium oxide in 20–30 ml of nitric acid solution to prepare a 1–2 mol / L samarium nitrate solution for later use; then take 40–50 ml of LMF solution and add 4–8 × 10⁻⁶ mol / L of samarium oxide solution to each solution. -3 mol ferric nitrate and 4~8.4×10 -3 Add 1 mol of bismuth nitrate, with Bi element in excess of 5-10%, and stir until the solid is completely dissolved. Then add 0.4-0.8 mL of samarium nitrate solution and stir evenly. Add 4-10 g of citric acid and stir until the solid is completely dissolved. Then sonicate the above mixture for 10-20 min. Finally, place the mixture on a magnetic stirrer and stir with a magnetic rotor. Slowly add 3-3.5 g of PVP powder and stir until PVP is completely dissolved to form a BFO precursor solution.

3. The preparation process of an antibacterial infrared magnetic health care fabric according to claim 2, characterized in that: Weigh 20-25g of nano-ZnO into a 250-500mL beaker, add 20-30mL of distilled water and 5-8g of dispersant, and sonicate at room temperature for 30-40min. Then add 200-240g of ethylene glycol (EG) to the beaker to prepare a 10-15%wt dispersion slurry. Continue sonicating for 60-70min, evaporate and dehydrate, and finally obtain a slurry-type nano-ZnO dispersion.

4. The preparation process of an antibacterial infrared magnetic health care fabric according to claim 3, characterized in that: The nano-ZnO dispersion was mixed with the BFO precursor solution and ultrasonically dispersed for 30-40 minutes to obtain a magnetic BFO@ZnO particle solution.

5. The preparation process of an antibacterial infrared magnetic health care fabric according to claim 4, characterized in that: Spinning: Electrospinning is used with the following parameters: DC voltage of 20~25kV, distance from needle tip to receiving roller of 20~25cm, electric field strength of 1~1.5kV / cm, injection pump speed of 0.5~1mL / h, ambient temperature of 25~30℃, and humidity of 45~50%.

6. The preparation process of an antibacterial infrared magnetic health care fabric according to claim 1, characterized in that: Spinning process: (1) Opening and cleaning cotton Manual opening is used to tear the fibers evenly and spread them into a layer; (2) Carding The carding machine cylinder speed is 360 r / min, and the licker-in speed is 850 r / min; (3) Combined clauses: Coffee charcoal pre-combining: Dry weight: 16g / 3m~17.6g / 5m, using FA306 combing machine. Draw ratio: 8~8.5 times; rear zone draw ratio: 1~1.7 times; vehicle speed: 200~210m / min; bell mouth: 3~3.5mm; spacing: 5mm×15mm~7mm×20mm. The speed of the machine for rolling coffee charcoal and magnetic fiber is 200~210m / min, the flare is 3~3.5mm, and the spacing is 5mm×15mm~7mm×16mm; (4) Corrugated yarn The twist of the blended yarn was determined to be 5~5.5 twists / 10cm, and an FA423 roving frame was selected; (5) Fine yarn Select a smaller back zone draft of 1 to 1.5 times, with a spacing of 1 to 3.0 mm, and V-shaped draft; (6) Winding tube The winding speed is 1000~1200m / min.

7. The preparation process of an antibacterial infrared magnetic health care fabric according to claim 1, characterized in that: Weaving parameters: thickness 0.7~1.1mm, weight per square meter 200~260g / m² 2 Horizontal density: 100-120 rings / 5cm; Vertical density: 110-200 rings / 5cm; Total density: 500-900 rings / cm 2 .

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