Moisture-absorbing and antibacterial fabric and preparation method thereof

Abstract

The application discloses a moisture-absorbing, sweat-repelling and antibacterial fabric and a preparation method thereof, and belongs to the technical field of functional textile fabrics. The fabric comprises, from inside to outside, a skin-friendly moisture-absorbing layer, a directional moisture-conducting and antibacterial layer and a quick-drying water-repellent layer, and is formed by hot melt glue point compounding; the skin-friendly moisture-absorbing layer is formed by blending silk glue protein modified viscose, mulberry silk and flax; the directional moisture-conducting and antibacterial layer comprises profiled cross-section polyester fibers and in-situ supported composite antibacterial fibers; the composite antibacterial agent is a quaternary ammonium chitosan and nano zinc oxide compounding system; and the outer surface of the quick-drying water-repellent layer is subjected to fluorine hydrophobic finishing. The application constructs a sweat one-way conduction path through a three-layer gradient structure, realizes the synergistic improvement of the moisture-absorbing, moisture-conducting and quick-drying performances, simultaneously has broad-spectrum antibacterial effect and excellent washing-resistant antibacterial stability, and the fabric is comfortable and breathable to wear and can be applied to the fields of sportswear, outdoor functional textiles and medical care textiles.

Description

Technical Field

[0001] This invention belongs to the field of functional textile fabric technology, specifically relating to a moisture-wicking and antibacterial fabric and its preparation method. Background Technology

[0002] As residents' living standards improve and their health awareness increases, consumers' demands for textiles have shifted from basic covering and warmth to a combination of functionality, comfort, and health benefits. This is especially true in sportswear, outdoor gear, and underwear, where moisture-wicking and antibacterial functions have become core performance indicators.

[0003] The human body secretes a lot of sweat during exercise or in high-temperature environments. If the fabric cannot wick away and evaporate the sweat in time, it will cause the skin to feel sticky and stuffy. A long-term damp environment can also breed bacteria and fungi, causing odor, itchy skin, and even infection. Currently, moisture-wicking fabrics on the market mainly achieve this through two types of technology: one type uses irregularly shaped cross-section chemical fibers, which utilize the capillary grooves on the fiber surface to create a wicking effect, quickly conducting sweat to the fabric surface for diffusion and evaporation. Typical examples are cross-shaped and Y-shaped polyester fibers. The other type is to perform a hydrophilic treatment on the fabric, grafting hydrophilic groups onto the fiber surface to improve the fabric's moisture absorption.

[0004] However, existing technologies generally suffer from the following technical defects:

[0005] First, it is difficult to balance moisture absorption and perspiration wicking performance. Single-fiber fabrics have a fast moisture wicking rate, but poor moisture absorption, and cannot quickly absorb sweat from the skin surface, resulting in a noticeable sticky feeling when wearing them initially. On the other hand, fabrics treated with hydrophilic finishing have improved moisture absorption, but sweat tends to remain inside the fabric, resulting in a slow evaporation rate, a prolonged damp state, and the hydrophilic groups are prone to falling off after multiple washes, leading to a significant decrease in functionality.

[0006] Secondly, the synergy between antibacterial and moisture-wicking functions is poor. Most antibacterial fabrics use a finishing impregnation process to attach antibacterial agents to the fiber surface. Although the initial antibacterial effect is acceptable, the antibacterial agents are easily shed and lost during sweat washing and repeated washing, resulting in poor wash resistance. Moreover, the antibacterial agents are mostly loaded in the inner layer of the fabric, which not only affects the fabric's moisture absorption but also easily leads to direct skin contact and the risk of sensitization. At the same time, single antibacterial agents (such as nano-silver and quaternary ammonium salts) have the problem of a narrow antibacterial spectrum, with limited inhibitory effect on fungi such as Candida albicans.

[0007] Third, the fabric structure design is unreasonable. Most functional fabrics are single-layer blended structures, which cannot form a gradient conduction path of "moisture absorption-moisture wicking-evaporation". Sweat tends to accumulate inside the fabric, failing to achieve one-way moisture wicking. When the external humidity is high, sweat backflow can also occur, seriously affecting the dryness of the garment. Some multi-layered fabrics have problems such as poor interlayer bonding, easy peeling, and discontinuous moisture wicking between layers, significantly reducing the actual moisture wicking effect.

[0008] Therefore, developing a moisture-wicking and antibacterial fabric that combines gradient unidirectional moisture wicking, high-efficiency broad-spectrum antibacterial properties, excellent washability, and comfortable wear is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0009] The purpose of this invention is to address the shortcomings of existing technologies by providing a moisture-wicking and antibacterial fabric and its preparation method. Through a three-layer gradient structure design consisting of a skin-friendly moisture-wicking layer, a directional moisture-wicking and antibacterial layer, and a quick-drying and water-repellent layer, combined with an in-situ loaded composite antibacterial system, the fabric achieves synergistic effects of moisture absorption, moisture wicking, quick drying, and antibacterial properties. This solves the problems of existing fabrics having difficulty in simultaneously achieving moisture wicking and antibacterial properties, poor washability, and weak functional synergy.

[0010] The objective of this invention can be achieved through the following technical solutions:

[0011] A moisture-wicking and antibacterial fabric, comprising, from the inside out, a skin-friendly moisture-wicking layer, a directional moisture-wicking and antibacterial layer, and a quick-drying and water-repellent layer;

[0012] The skin-friendly and moisture-absorbing layer, by weight, comprises 60-80 parts of sericin-modified viscose fiber, 15-25 parts of mulberry silk fiber, and 5-15 parts of flax fiber;

[0013] The directional moisture-wicking antibacterial layer comprises, by weight, 70-85 parts of irregular cross-section polyester fiber and 15-30 parts of loaded composite antibacterial fiber; the loaded composite antibacterial fiber uses viscose fiber as a matrix and is loaded with a composite antibacterial agent in situ, the composite antibacterial agent being composed of quaternized chitosan and nano zinc oxide in a mass ratio of 3-5:1.

[0014] The quick-drying water-repellent layer comprises, by weight, 80-90 parts fine denier polyester fiber and 10-20 parts polypropylene fiber, and the outer surface of the quick-drying water-repellent layer is treated with fluorine hydrophobic coating.

[0015] As a preferred technical solution of the present invention, the preparation method of the sericin-modified viscose fiber is as follows: the viscose fiber is immersed in a sericin solution with a mass concentration of 8-12 g / L, the bath ratio is 1:15, and the solution is immersed at 40-50℃ for 30-45 min. After being taken out, the fiber is dehydrated to a liquid retention rate of 80-100%, and then dried at 100-110℃ to obtain the sericin-modified viscose fiber.

[0016] As a preferred embodiment of the present invention, the cross-section of the irregularly shaped polyester fiber is cross-shaped or Y-shaped, the single filament fineness is 0.8-1.5D, and the fiber surface has 4-6 axially extending capillary grooves with a groove depth of 15-25% of the fiber diameter.

[0017] As a preferred embodiment of the present invention, in the supported composite antibacterial fiber, the loading of the composite antibacterial agent is 3-6% of the dry weight of the viscose fiber; the degree of deacetylation of the quaternized chitosan is ≥85%, and the degree of quaternary ammonium substitution is 0.6-1.0; the particle size of the nano zinc oxide is 20-50 nm.

[0018] As a preferred embodiment of the present invention, the skin-friendly moisture-wicking layer has a basis weight of 80-120 g / m² and is woven using a weft-knitted plain knit structure; the moisture-wicking and antibacterial layer has a basis weight of 100-150 g / m² and is woven using a weft-knitted mesh structure; and the quick-drying water-repellent layer has a basis weight of 60-90 g / m² and is woven using a plain weave structure.

[0019] As a preferred embodiment of the present invention, the finishing agent used in the fluorine hydrophobic finishing is C6F6 acrylate, and the contact angle of the surface of the quick-drying water-repellent layer after finishing is 110-130°, and the liquid carrying rate of the finishing agent is 60-80%.

[0020] As a preferred embodiment of the present invention, the skin-friendly moisture-absorbing layer and the directional moisture-wicking antibacterial layer, as well as the directional moisture-wicking antibacterial layer and the quick-drying water-repellent layer, are bonded together using a hot melt adhesive dot bonding process. The adhesive dot density is 15-25 dots / square centimeter, and the amount of adhesive applied at a single dot is 0.05-0.1 mg.

[0021] A method for preparing the moisture-wicking and antibacterial fabric as described above includes the following steps:

[0022] Preparation of S1 loaded composite antibacterial fiber: Viscose fiber is activated by immersing it in a pretreatment solution, then transferred to a composite antibacterial sol for in-situ loading, and after curing, washing and drying, the loaded composite antibacterial fiber is obtained.

[0023] S2 Fabric weaving: Weigh the corresponding fibers according to the formula, and make yarns for each layer through cotton cleaning, carding, drawing, roving and spinning processes. Then weave the skin-friendly moisture-absorbing layer fabric, the moisture-wicking antibacterial layer fabric and the quick-drying water-repellent layer fabric respectively.

[0024] S3 Three-layer Composite Molding: The three layers of fabric are aligned from the inside to the outside and laminated using a hot melt adhesive dot bonding process to obtain a composite fabric.

[0025] S4 finishing process: The composite fabric is pre-shrinked and shaped, then subjected to outer hydrophobic finishing, baking, washing, and softening and shaping to finally produce a moisture-wicking and antibacterial fabric.

[0026] As a preferred technical solution of the present invention, the specific process of the in-situ loading in step S1 is as follows:

[0027] The pretreatment solution is a sodium hydroxide solution with a mass concentration of 2-4 g / L, a bath ratio of 1:20, a temperature of 50-60℃, and a treatment time of 20-30 min;

[0028] Preparation of composite antibacterial sol: Dissolve quaternized chitosan in acetic acid solution according to the ratio, stir until completely dissolved, then add nano zinc oxide dispersion, ultrasonically disperse for 15-20 min, adjust pH to 5-6, and obtain composite antibacterial sol;

[0029] In-situ loading process: Immerse the activated viscose fiber in the composite antibacterial sol at a bath ratio of 1:15 and soak at 60-70℃ for 40-60 minutes, stirring once every 10 minutes during the process; after taking it out, pre-bake at 80℃ for 3 minutes, and then bake at 120-130℃ for 2-3 minutes to complete the curing.

[0030] As a preferred technical solution of the present invention, the fabric is used in sportswear, outdoor functional textiles, and medical care textiles.

[0031] The beneficial effects of this invention are:

[0032] (1) This invention constructs a gradient functional structure with an inner layer for moisture absorption, a middle layer for moisture conduction, and an outer layer for quick drying: the inner layer uses a highly absorbent modified viscose, a blend of silk and linen, which can quickly absorb sweat from the skin surface and eliminate stickiness; the middle layer of irregularly shaped polyester fibers forms continuous capillary channels, which directionally transport sweat to the outer layer through the wicking effect; the outer layer is hydrophobically treated, so that sweat forms a thin liquid film on the surface for rapid diffusion and evaporation, and prevents liquid water from seeping back. The three-layer structure forms a humidity gradient and a capillary force gradient, realizing unidirectional directional conduction of sweat, and simultaneously improving the moisture absorption rate and evaporation rate.

[0033] (2) In this invention, the composite antibacterial agent is loaded in situ into the viscose fiber of the middle moisture-wicking layer. On the one hand, when sweat flows through the middle layer, it comes into full contact with the antibacterial agent, realizing "antibacterial upon sweating" and preventing bacteria from multiplying in the damp fabric. On the other hand, the antibacterial agent is fixed in the micropores and molecular chains inside the fiber, rather than being coated on the surface. After 50 standard water washes, the antibacterial rate is still above 95%, and the washability is far superior to conventional finishing processes.

[0034] Simultaneously, quaternized chitosan and nano-zinc oxide form a synergistic antibacterial mechanism: quaternized chitosan carries a positive charge and can adsorb negatively charged bacterial cell membranes, altering cell membrane permeability; nano-zinc oxide generates reactive oxygen free radicals in humid environments, damaging bacterial intracellular enzyme systems and genetic material. The combined antibacterial spectrum covers Gram-positive bacteria, Gram-negative bacteria, and fungi, with a significantly higher inhibition rate against Candida albicans than any single antibacterial agent.

[0035] (3) The inner layer uses sericin-modified viscose combined with mulberry silk and linen, which not only has excellent moisture absorption but also good skin affinity and a certain skin care effect. The linen fiber can also help inhibit bacteria. The middle layer of irregular polyester provides a structural moisture-wicking skeleton, which, together with antibacterial fibers, achieves functional composite. The outer layer of fine denier polyester and polypropylene blend ensures the fabric's crispness and quick-drying properties. The overall fabric is soft and breathable, without a stuffy feeling, and can be widely used in sports T-shirts, outdoor quick-drying clothing, underwear, medical care clothing, and many other fields. The in-situ loading process, conventional weaving, and glue dot composite process used in this invention do not require special equipment and can be realized on existing textile production lines. The process parameters are controllable, the product performance is stable, the production cost is moderate, and it has good prospects for industrial application. Detailed Implementation

[0036] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with embodiments, is provided below.

[0037] Raw materials and reagents instructions

[0038] 1. Viscose fiber: 1.5D×38mm, first-class product, commercially available;

[0039] 2. Sericin: Food grade, molecular weight 10-30kDa, commercially available;

[0040] 3. Mulberry silk fiber: 1.5D×38mm, degummed, commercially available;

[0041] 4. Flax fiber: 2.2D×40mm, processed into flax, commercially available;

[0042] 5. Cross-shaped cross-section polyester fiber: 1.2D×38mm, 4 axial grooves, groove depth 20% of fiber diameter, commercially available;

[0043] 6. Y-shaped cross-section polyester fiber: 1.0D×38mm, 6 axial grooves, commercially available;

[0044] 7. Ordinary round polyester fiber: 1.2D×38mm, commercially available;

[0045] 8. Fine denier polyester fiber: 0.8D×38mm, commercially available;

[0046] 9. Polypropylene fiber: 1.0D×38mm, commercially available;

[0047] 10. Quaternized chitosan: Deacetylation degree 90%, quaternary substitution degree 0.8, commercially available;

[0048] 11. Nano zinc oxide: 30nm particle size, aqueous dispersion, 30% solid content, commercially available;

[0049] 12. Nano silver antibacterial agent: particle size 20nm, aqueous dispersion, solid content 30%, commercially available;

[0050] 13. C6F hydrophobic finishing agent: AG-480, solid content 20%, Daikin Chemical;

[0051] 14. Hot melt adhesive powder: Copolyamide hot melt adhesive, particle size 80-120μm, melting point 110℃, commercially available;

[0052] Other reagents: Sodium hydroxide, glacial acetic acid, etc., were all of analytical grade.

[0053] Example 1

[0054] This embodiment provides a moisture-wicking and antibacterial fabric, the specific formula and preparation process of which are as follows:

[0055] 1. Fabric formula (parts by weight)

[0056] Skin-friendly moisture-wicking layer: 70 parts sericin modified viscose fiber, 20 parts mulberry silk fiber, 10 parts flax fiber, weight 100g / ㎡, weft knit plain weave;

[0057] Directional moisture-wicking antibacterial layer: 75 parts cross-section polyester fiber, 25 parts load-bearing composite antibacterial fiber, weight 120g / ㎡, weft knitted mesh structure;

[0058] Among them, the loading of composite antibacterial agent in the loaded type composite antibacterial fiber is 4.5% of the dry weight of the fiber, and the mass ratio of quaternized chitosan to nano zinc oxide is 4:1;

[0059] Quick-drying water-repellent layer: 85 parts fine denier polyester fiber, 15 parts polypropylene fiber, 75 g / m² weight, plain weave structure, outer surface treated with fluorine hydrophobic finish.

[0060] 2. Preparation process

[0061] (1) Preparation of viscose fiber modified with sericin

[0062] Prepare a 10 g / L sericin aqueous solution and stir until completely dissolved; immerse ordinary viscose fiber in the solution at a bath ratio of 1:15, heat to 45℃, and soak for 35 min; remove and dehydrate using a centrifugal dehydrator until the liquid content is 90%, then dry in a 105℃ hot air oven to obtain sericin-modified viscose fiber.

[0063] (2) Preparation of load-bearing composite antibacterial fibers

[0064] ①Alkali activation treatment: Prepare a sodium hydroxide solution with a mass concentration of 3g / L, immerse ordinary viscose fibers in the solution, bath ratio 1:20, heat to 55℃, and treat for 25min; after taking them out, wash them with water until neutral, and dehydrate them until the liquid content is 80% for later use.

[0065] ② Preparation of composite antibacterial sol: Weigh quaternized chitosan and dissolve it in a 1% (v / v) acetic acid solution. Stir until completely dissolved to prepare a quaternized chitosan solution with a mass concentration of 15 g / L. Add nano zinc oxide dispersion at a mass ratio of 4:1. After stirring evenly, place the mixture in an ultrasonic disperser and ultrasonically disperse at 200W power for 18 min. Adjust the pH to 5.5 with dilute sodium hydroxide to obtain the composite antibacterial sol.

[0066] ③ In-situ loading and curing: The activated viscose fiber is immersed in the composite antibacterial sol at a liquor ratio of 1:15, heated to 65℃, and impregnated for 50 minutes, with gentle stirring every 10 minutes during the process; the fiber is removed, rolled in a rolling mill until the liquid content is 90%, pre-dried at 80℃ for 3 minutes, and then baked at 125℃ for 2.5 minutes to complete the curing; finally, the surface antibacterial agent is removed by rinsing with clean water, and dried at 105℃ to obtain the loaded composite antibacterial fiber.

[0067] (3) Weaving of each layer of grey fabric

[0068] The fibers of each layer are weighed according to the formula and spun into 18.2 tex yarn through cotton cleaning, carding, drawing, roving and spinning processes; the skin-friendly moisture-absorbing layer and the directional moisture-wicking antibacterial layer are woven on a circular knitting machine to form plain knit and mesh knitted fabrics respectively; the quick-drying water-repellent layer is woven on a rapier loom to form plain knitted fabric; each fabric is pre-shaped at 180℃ for 30 seconds to control dimensional stability.

[0069] (4) Three-layer composite molding

[0070] The hot melt adhesive lamination process using the powder dot method is adopted: copolyamide hot melt adhesive powder is transferred to the upper and lower surfaces of the directional moisture-wicking antibacterial layer through a sculpted roller, with an adhesive dot density of 20 dots / square centimeter and a single dot amount of 0.08mg; then the skin-friendly moisture-wicking layer, the directional moisture-wicking antibacterial layer, and the quick-drying water-repellent layer are aligned and stacked from the inside out, and fed into the laminating machine, and laminated at 120℃ and 0.2MPa pressure at a speed of 15m / min, and cooled and wound to obtain the composite fabric.

[0071] (5) Post-processing

[0072] ① Pre-shrinking and shaping: The composite fabric is pre-shrinked at 160℃ and 20m / min to eliminate internal stress;

[0073] ② Single-sided hydrophobic finishing: Fluorine finishing is performed on the outer side of the quick-drying water-repellent layer using a single-sided pad-drying process. The finishing solution is a fluorine finishing agent solution with a mass concentration of 30 g / L and a pad-drying rate of 70%.

[0074] ③ Baking: Baking at 150℃ for 90 seconds to crosslink and fix the hydrophobic finishing agent;

[0075] ④ Softening by washing: After being washed with warm water and soap, the fabric is then immersed in a softener solution with a mass concentration of 2g / L. After dehydration, it is stretched and shaped at 140℃ to finally obtain the finished fabric.

[0076] Example 2

[0077] This embodiment provides another moisture-wicking and antibacterial fabric, which differs from Embodiment 1 in that the formula ratio and some process parameters are adjusted, as follows:

[0078] 1. Fabric formula (parts by weight)

[0079] Skin-friendly moisture-wicking layer: 60 parts sericin modified viscose fiber, 25 parts mulberry silk fiber, 15 parts flax fiber, weight 90g / ㎡;

[0080] Directional moisture-wicking antibacterial layer: 85 parts Y-shaped cross-section polyester fiber, 15 parts load-type composite antibacterial fiber, weight 130g / ㎡;

[0081] The composite antibacterial agent loading is 3% of the dry weight of the fiber, and the mass ratio of quaternized chitosan to nano zinc oxide is 3:1.

[0082] Quick-drying water-repellent layer: 90 parts fine denier polyester fiber, 10 parts polypropylene fiber, weight 80g / ㎡.

[0083] 2. Preparation process

[0084] Basically the same as Example 1, except for the following parameters:

[0085] Sericin modification: sericin solution concentration 8 g / L, impregnation temperature 40℃, time 45 min;

[0086] In-situ loading: impregnation temperature 60℃, time 60min, baking temperature 120℃, time 3min;

[0087] The glue dot density is 15 dots / square centimeter, and the amount of glue applied at a single dot is 0.1 mg.

[0088] Hydrophobic finishing with a slurry yield of 60%.

[0089] Example 3

[0090] This embodiment provides a third type of moisture-wicking and antibacterial fabric, which differs from Embodiment 1 in that the formula ratio and some process parameters are adjusted, as follows:

[0091] 1. Fabric formula (parts by weight)

[0092] Skin-friendly moisture-wicking layer: 80 parts sericin modified viscose fiber, 15 parts mulberry silk fiber, 5 parts flax fiber, weight 110g / ㎡;

[0093] Directional moisture-wicking antibacterial layer: 70 parts cross-section polyester fiber, 30 parts load-bearing composite antibacterial fiber, weight 140g / ㎡;

[0094] The composite antibacterial agent loading is 6% of the dry weight of the fiber, and the mass ratio of quaternized chitosan to nano zinc oxide is 5:1.

[0095] Quick-drying water-repellent layer: 80 parts fine denier polyester fiber, 20 parts polypropylene fiber, weight 70g / ㎡.

[0096] 2. Preparation process

[0097] Basically the same as Example 1, except for the following parameters:

[0098] Sericin modification: sericin solution concentration 12g / L, impregnation temperature 50℃, time 30min;

[0099] In-situ loading: impregnation temperature 70℃, time 40min, baking temperature 130℃, time 2min;

[0100] The glue dot density is 25 dots / square centimeter, and the amount of glue applied at a single dot is 0.05 mg.

[0101] Hydrophobic finishing with a slurry yield of 80%.

[0102] In Comparative Example 1, the skin-friendly moisture-absorbing layer was modified with sericin-modified viscose fiber, which was replaced with 70 parts of ordinary viscose fiber. The remaining components, structure and preparation process were exactly the same as in Example 1.

[0103] Comparative Example 2

[0104] In the directional moisture-wicking antibacterial layer, 75 parts of cross-shaped cross-section polyester fiber were replaced with 75 parts of ordinary circular cross-section polyester fiber, and the remaining components, structure and preparation process were exactly the same as in Example 1.

[0105] Comparative Example 3

[0106] The quick-drying water-repellent layer is not treated with fluorine hydrophobic finishing, and the remaining components, structure and preparation process are exactly the same as in Example 1.

[0107] Comparative Example 4

[0108] The composite antibacterial agent uses only nano zinc oxide, and the amount used is the same as the total mass of the composite antibacterial agent in Example 1. The other components, structure and preparation process are exactly the same as in Example 1.

[0109] Comparative Example 5

[0110] The composite antibacterial agent uses only quaternized chitosan, and the amount used is the same as the total mass of the composite antibacterial agent in Example 1. The other components, structures and preparation processes are exactly the same as in Example 1.

[0111] Comparative Example 6

[0112] The directional moisture-wicking antibacterial layer uses ordinary viscose fiber to replace the load-bearing composite antibacterial fiber. After the fabric is woven, it is loaded with the same amount of composite antibacterial agent as in Example 1 using a padding process with a liquid-pickling rate of 90% and baked and cured at 125°C. The remaining structure and process are the same as in Example 1.

[0113] Comparative Example 7

[0114] All fibers in Example 1 were mixed evenly according to their total mass ratio, spun into yarn, and woven into a single-layer knitted fabric. The total weight was the same as that of the three layers in Example 1 (295 g / m²), and no hydrophobic finishing or lamination was performed. The total amount of the remaining antibacterial agents was the same as that in Example 1, and the fabric was loaded using a post-finishing padding method.

[0115] Comparative Example 8

[0116] The composite antibacterial agent was replaced with an equal mass of nano-silver antibacterial agent, and the in-situ loading process was still used. The remaining components, structure and preparation process were exactly the same as in Example 1.

[0117] Comparative Example 9

[0118] In the loaded composite antibacterial fiber, the loading of the composite antibacterial agent was reduced to 2.25% of the dry weight of the fiber (50% of that in Example 1), while the remaining components, structure and preparation process were exactly the same as in Example 1.

[0119] Comparative Example 10

[0120] The directional moisture-wicking antibacterial layer is made entirely of cross-shaped cross-section polyester fiber, without the addition of load-bearing composite antibacterial fiber. The remaining components, structure and preparation process are exactly the same as in Example 1.

[0121] Performance testing

[0122] All examples and comparative samples underwent uniform performance testing, with the following test items and standards:

[0123] 1. Moisture absorption performance

[0124] Moisture regain: Tested according to GB / T9995-1997 "Determination of moisture content and moisture regain of textile materials by oven drying method";

[0125] Water droplet diffusion time: Tested according to GB / T21655.1-2008 "Evaluation of moisture absorption and quick-drying properties of textiles - Part 1: Single combination test method", record the time from when the water droplet comes into contact with the fabric to when it is completely absorbed. The shorter the time, the faster the moisture absorption.

[0126] 2. Moisture-wicking properties

[0127] Unidirectional moisture transfer index: Tested according to GB / T21655.2-2009 "Evaluation of the moisture absorption and quick-drying properties of textiles - Part 2: Dynamic moisture transfer method". The higher the value, the stronger the unidirectional moisture transfer ability.

[0128] Moisture evaporation rate: Tested according to GB / T21655.1-2008, unit g / h, the higher the value, the faster the drying.

[0129] 3. Antibacterial properties

[0130] According to GB / T20944.3-2008 "Evaluation of antimicrobial properties of textiles - Part 3: Shaking method", the test species were Escherichia coli (Gram negative), Staphylococcus aureus (Gram positive), and Candida albicans (fungus);

[0131] Wash resistance and antibacterial performance: After washing 50 times according to the water washing procedure specified in GB / T20944.3-2008, the antibacterial rate was tested again.

[0132] 4. Breathability

[0133] Tested according to GB / T5453-1997 "Determination of air permeability of textile fabrics", with a test area of ​​20cm² and a pressure difference of 100Pa. The results are expressed as air permeability in mm / s.

[0134] 5. Interlayer peel strength

[0135] Tested according to FZ / T01010-2012 "Textiles - Test Method for Peel Strength of Laminated Fabrics", with a sample width of 5cm and a tensile speed of 100mm / min, and the average value is taken.

[0136] The performance test results of all samples are shown in the table below:

[0137] Table 1

[0138]

[0139] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A moisture-wicking and antibacterial fabric, characterized in that, From the inside out, it includes a skin-friendly moisture-absorbing layer, a moisture-wicking and antibacterial layer, and a quick-drying water-repellent layer; The skin-friendly and moisture-absorbing layer, by weight, comprises 60-80 parts of sericin-modified viscose fiber, 15-25 parts of mulberry silk fiber, and 5-15 parts of flax fiber. The directional moisture-wicking antibacterial layer comprises, by weight, 70-85 parts of irregular cross-section polyester fiber and 15-30 parts of loaded composite antibacterial fiber; the loaded composite antibacterial fiber uses viscose fiber as a matrix and is loaded with a composite antibacterial agent in situ, the composite antibacterial agent being composed of quaternized chitosan and nano zinc oxide in a mass ratio of 3-5:

1. The quick-drying water-repellent layer comprises, by weight, 80-90 parts fine denier polyester fiber and 10-20 parts polypropylene fiber, and the outer surface of the quick-drying water-repellent layer is treated with fluorine hydrophobic coating.

2. The moisture-wicking and antibacterial fabric according to claim 1, characterized in that, The method for preparing the sericin-modified viscose fiber is as follows: the viscose fiber is immersed in a sericin solution with a mass concentration of 8-12 g / L, the bath ratio is 1:15, and it is immersed at 40-50℃ for 30-45 min. After being taken out, it is dehydrated to a liquid retention rate of 80-100%, and then dried at 100-110℃ to obtain the sericin-modified viscose fiber.

3. The moisture-wicking and antibacterial fabric according to claim 1, characterized in that, The cross-section of the irregularly shaped polyester fiber is cross-shaped or Y-shaped, with a single filament fineness of 0.8-1.5D. The fiber surface has 4-6 axially extending capillary grooves, with a groove depth of 15-25% of the fiber diameter.

4. The moisture-wicking and antibacterial fabric according to claim 1, characterized in that, In the supported composite antibacterial fiber, the loading of the composite antibacterial agent is 3-6% of the dry weight of the viscose fiber; the degree of deacetylation of the quaternized chitosan is ≥85%, and the degree of quaternary ammonium substitution is 0.6-1.0; the particle size of the nano zinc oxide is 20-50 nm.

5. The moisture-wicking and antibacterial fabric according to claim 1, characterized in that, The skin-friendly and moisture-wicking layer has a weight of 80-120 g / m² and is woven with a weft-knitted plain knit structure; the moisture-wicking and antibacterial layer has a weight of 100-150 g / m² and is woven with a weft-knitted mesh structure; the quick-drying and water-repellent layer has a weight of 60-90 g / m² and is woven with a plain weave structure.

6. The moisture-wicking and antibacterial fabric according to claim 1, characterized in that, The fluorinated hydrophobic finishing agent is C6F6 acrylate. After finishing, the contact angle of the quick-drying water-repellent layer surface is 110-130°, and the liquid retention rate of the finishing agent is 60-80%.

7. The moisture-wicking and antibacterial fabric according to claim 1, characterized in that, The skin-friendly moisture-absorbing layer and the directional moisture-wicking antibacterial layer, as well as the directional moisture-wicking antibacterial layer and the quick-drying water-repellent layer, are bonded using a hot melt adhesive dot bonding process. The adhesive dot density is 15-25 dots / square centimeter, and the amount of adhesive applied at a single dot is 0.05-0.1 mg.

8. A method for preparing a moisture-wicking and antibacterial fabric as described in any one of claims 1-7, characterized in that, Includes the following steps: Preparation of S1 loaded composite antibacterial fiber: Viscose fiber is activated by immersing it in a pretreatment solution, then transferred to a composite antibacterial sol for in-situ loading, and after curing, washing and drying, the loaded composite antibacterial fiber is obtained. S2 Fabric weaving: Weigh the corresponding fibers according to the formula, and make yarns for each layer through cotton cleaning, carding, drawing, roving and spinning processes. Then weave the skin-friendly moisture-absorbing layer fabric, the moisture-wicking antibacterial layer fabric and the quick-drying water-repellent layer fabric respectively. S3 Three-layer Composite Molding: Align the three layers of fabric from the inside out, and laminate them using a hot melt adhesive dot bonding process to obtain a composite fabric; S4 finishing process: The composite fabric is pre-shrinked and shaped, then subjected to outer hydrophobic finishing, baking, washing, and softening and shaping to finally produce a moisture-wicking and antibacterial fabric.

9. The preparation method according to claim 8, characterized in that, The specific process of the in-situ loading mentioned in step S1 is as follows: The pretreatment solution is a sodium hydroxide solution with a mass concentration of 2-4 g / L, a bath ratio of 1:20, a temperature of 50-60℃, and a treatment time of 20-30 min; Preparation of composite antibacterial sol: Dissolve quaternized chitosan in acetic acid solution according to the ratio, stir until completely dissolved, then add nano zinc oxide dispersion, ultrasonically disperse for 15-20 min, adjust pH to 5-6, and obtain composite antibacterial sol; In-situ loading process: Immerse the activated viscose fiber in the composite antibacterial sol at a bath ratio of 1:15 and soak at 60-70℃ for 40-60 minutes, stirring once every 10 minutes during the process; after taking it out, pre-bake at 80℃ for 3 minutes, and then bake at 120-130℃ for 2-3 minutes to complete the curing.

10. An application of the moisture-wicking and antibacterial fabric as described in any one of claims 1-7, characterized in that, The fabric is used in sportswear, outdoor functional textiles, and medical care textiles.

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