One-way moisture-conducting antibacterial fabric and preparation method thereof

Abstract

The invention discloses a one-way moisture-conducting antibacterial fabric and a preparation method thereof, and mainly relates to the technical field of fabric products made of fiber yarns. Compared with the prior art, the one-way moisture-conducting antibacterial fabric is of a double-layer structure, the surface layer is the bamboo charcoal yarn, and the microporous structure of the bamboo charcoal powder is used for achieving moisture absorption, quick drying, moisture absorption, sweat releasing, negative ion releasing and peculiar smell adsorption. The inner layer is composed of covering yarn and silver yarn, the lycra spandex yarn provides elasticity, the drarn polypropylene fiber keeps warm and accumulates heat, and the silver yarn destroys microbial cell structures through silver ions, so that lasting antibiosis is achieved. Through the synergistic effect of moisture absorption and sweat releasing of the surface layer and heat preservation and antibiosis of the inner layer, the fabric improves the wearing comfort, sanitation and safety, has the far infrared performance, effectively adjusts the body temperature, reduces heat loss and meets different environment and activity requirements.

Description

Technical Field

[0001] The invention relates to the technical field of fabric products made of fiber yarns, and in particular to a unidirectional moisture-conducting antibacterial fabric and a preparation method thereof. Background Art

[0002] One-way moisture-conducting fabric is a special functional textile. The addition of special fiber textile materials can quickly absorb moisture from the skin surface when the human body sweats and conduct it to the outer layer of the fabric, thereby accelerating the evaporation of moisture and keeping the skin dry and comfortable. One-way moisture-conducting can reduce the reabsorption of moisture between the skin and the fabric, avoid the feeling of dampness and stickiness, and improve the comfort of wearing. Improving the antibacterial property of one-way moisture-conducting fabric can effectively inhibit the growth of bacteria and fungi after the fabric is sweaty and wet, and reduce skin diseases caused by bacteria breeding in sweat. It is especially suitable for people with sensitive skin or prone to sweating, providing a safer and more hygienic wearing environment. One-way moisture-conducting antibacterial fabrics are widely used in sportswear, medical clothing, underwear and other fields. They are especially suitable for occasions where the body needs to be kept dry and hygienic for a long time. They are mainly reflected in improving the comfort of the wearer and reducing skin problems caused by humid environments.

[0003] The unidirectional moisture-conducting antibacterial fabrics in the prior art can solve the problems of moisture absorption and quick-drying and moisture absorption and perspiration by enhancing the moisture absorption capacity and moisture conduction speed of the fabric, improving the hydrophobicity of the fabric, thereby improving the perspiration efficiency of the fabric and reducing the retention of water on the surface of the fabric, and selecting new polymers or synthetic fiber materials with higher water absorption and faster water diffusion rate, etc., which can further improve the breathability, moisture absorption and quick-drying, moisture absorption and perspiration, and comfort of the fabric. When the sweat evaporates after the human body sweats, it will take away the body's heat, causing the body temperature to drop, which is particularly obvious in cold environments. In order to solve this problem, the unidirectional moisture-conducting antibacterial fabrics can be added with special materials to achieve the purpose of keeping the body warm while perspiring, and can lock the body's heat while reducing the moisture of the skin perspiration, prevent heat loss, maintain body temperature stability, and reduce the discomfort or health problems that may be caused by the rapid drop in body temperature after perspiration. It is particularly suitable for maintaining a suitable body temperature during skiing, mountaineering and other sports in cold environments.

[0004] CN110424091A discloses a unidirectional moisture-conducting antibacterial fabric and a preparation method thereof, comprising a double-layer fabric, wherein the inner layer of the double-layer fabric is woven with superfine denier polypropylene yarn, and the outer layer of the double-layer fabric is woven with zinc ion antibacterial fiber, and the superfine denier polypropylene yarn and the zinc ion antibacterial fiber are woven together by a double-sided large circular knitting machine. The invention meets the consumer's requirements for comfort in wearing clothing when sweating a lot through the double-layer fabric woven with superfine denier polypropylene yarn and zinc ion antibacterial fiber, and is particularly suitable for infant clothing, textiles and supplies, and can quickly guide saliva, sweat or urine to the outer layer of the fabric to keep the skin surface dry, and can solve many skin problems caused by sweat and urine soaking of infants and young children. At the same time, it has excellent antibacterial properties against bacteria in sweat, saliva, urine and contaminated through other channels, and has a good protective effect on the health of adults and infants and young children. It has a wide range of applications and a very broad market prospect. This invention uses ultra-fine denier polypropylene yarn as a one-way moisture-conducting raw material, and also adds zinc oxide to the antibacterial yarn to make the double-layer fabric have good antibacterial properties, but it does not solve the problems of heat loss and lowering of body temperature after perspiration.

[0005] CN110356062A discloses a double-layer composite unidirectional moisture-conducting antibacterial fabric, which adopts a weft-knitted double-sided structure, including a hydrophobic inner layer and a hydrophilic outer layer, wherein the inner layer fabric is composed of polyester fiber, and the outer layer fabric is composed of cotton fiber; the cotton fiber is modified by carboxymethyl chitosan, so that sweat water molecules first combine with hydrophilic carboxymethyl cellulose and then more easily pass through the inner hydrophobic polyester fabric layer, and then reach the outer hydrophilic cotton fiber layer, further improving the moisture conduction efficiency. This invention can improve the moisture conduction efficiency, help perspiration and keep fresh, but does not solve the problems of heat loss and body temperature drop after perspiration. Summary of the invention

[0006] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to improve the antibacterial property, moisture absorption and quick-drying property and perspiration absorption and discharge property of clothing fabrics while improving the far infrared performance, so as to effectively regulate body temperature and reduce heat loss.

[0007] To achieve the above object, the present invention provides a unidirectional moisture-conducting antibacterial fabric and a preparation method thereof.

[0008] The one-way moisture-conducting antibacterial fabric comprises a surface layer fabric and an inner layer fabric;

[0009] The weight ratio of the surface fabric and the inner fabric is 58-62%:38-42%;

[0010] The surface fabric is bamboo charcoal yarn;

[0011] The inner layer fabric is composed of core-spun yarn and silver thread.

[0012] The preparation method of the surface layer fabric is as follows: bamboo charcoal powder, oil agent and polyester chips are mixed, added to an extruder for extrusion granulation to obtain mixed particles, and the mixed particles and synergistic resin are melt-spun to obtain the bamboo charcoal yarn.

[0013] In the preparation method of the surface fabric, the weight ratio of bamboo charcoal powder, oil agent, polyester slice and synergistic resin is 1-4%: 0.1-0.5%: 75-97%: 0-24%.

[0014] The granulation temperature is preferably 130-230°C.

[0015] The spinning temperature is preferably 200-300° C., and the spinning rate is preferably 2500-3500 m / min.

[0016] The oil agent is polyester DTY oil agent.

[0017] The preparation method of the synergistic resin is as follows, in parts by weight:

[0018] 1-2 parts of pineapple leaf extract are added to 10-30 parts of 5-10wt% sodium carbonate aqueous solution, stirred for 1-2 hours, dried at 90-100°C, added to 10-30 parts of 10-20wt% acetic acid aqueous solution after drying, stirred for 0.5-1 hour, 10-30 maleic anhydride is added thereto, stirred for 0.5-1 hour, and dried at 90-100°C to obtain modified pineapple leaf extract; 1-2 parts of modified pineapple leaf extract are mixed with 15-25 parts of polyethylene, melt granulated to obtain modified polyethylene, i.e. the synergistic resin.

[0019] The preparation method of the inner layer fabric is as follows: core-spun yarn and silver yarn are fed into the circular knitting machine at the same time, and 8 yarns are knitted as one cycle, the first yarn is connected with silver yarn, and the second, third, fourth, fifth, sixth, seventh and eighth yarns are connected with core-spun yarn. Figure 1 The core yarn and the covering yarn are preferably made of core yarn and covering yarn in a weight ratio of 10-20%:80-90%.

[0020] The core yarn is preferably lycra spandex yarn, and the covering yarn is preferably dryarn polypropylene yarn.

[0021] The method of the one-way moisture-conducting antibacterial fabric is as follows: the surface fabric and the inner fabric are knitted together by a circular knitting machine, and the knitting is performed with 8 yarns as a cycle, the 1st, 3rd, 5th, and 7th yarns are the surface fabric, and the 2nd, 4th, 6th, and 8th yarns are the inner fabric; or the 1st, 3rd, 5th, and 7th yarns are the inner fabric, and the 2nd, 4th, 6th, and 8th yarns are the surface fabric; thus, the one-way moisture-conducting antibacterial fabric is obtained.

[0022] The one-way moisture-conducting antibacterial fabric of the present invention is a double-layer structure combining an inner layer and a surface layer, and the surface layer fabric is bamboo charcoal yarn, which mainly functions as moisture absorption, quick drying and moisture absorption and perspiration. The preparation of the bamboo charcoal yarn is through the process of blending bamboo charcoal powder and polyester slices into granules, and adding an oil agent to perform surface corrosion, increase the specific surface area, and form a microporous structure. The bamboo charcoal powder is made by grinding bamboo after high-temperature carbonization, has a rich pore structure and good adsorption, can release negative ions as the body temperature rises, effectively absorbs odors and promotes the absorption and discharge of moisture. The inner layer fabric is composed of core-spun yarn and silver wire, and mainly functions as antibacterial, heat storage and warmth preservation, and cold resistance. The core-spun yarn is composed of lycra spandex yarn and dryarn polypropylene. The lycra spandex yarn provides good elasticity and tactile comfort. The natural water repellency and low thermal conductivity of dryarn polypropylene help to keep warm and store heat, regulate body temperature, and reduce heat loss. The silver thread contains highly biologically active silver ions, which effectively destroy the cell wall and cell membrane of bacteria, inhibit the growth and reproduction of microorganisms, and can still maintain its antibacterial function even after hundreds of washings, ensuring the long-term hygiene and safety of the fabric. The one-way moisture-conducting antibacterial fabric of the present invention can quickly absorb and conduct heat, lock heat, and maintain temperature stability through the synergistic effect of the surface layer and the inner layer, meet the wearer's demand for comfort in different climates and activity intensities, improve the antibacterial property, moisture absorption and quick drying property, and absorb and perspiration property of the clothing fabric while improving the far-infrared performance, effectively regulating body temperature and reducing heat loss.

[0023] Beneficial effects of the present invention:

[0024] Compared with the prior art, the one-way moisture-conducting antibacterial fabric of the present invention adopts a double-layer structure. The surface layer is bamboo charcoal yarn, and the microporous structure of bamboo charcoal powder is used to achieve quick-drying and moisture absorption and perspiration, release negative ions, and absorb odors. The inner layer is composed of core-spun yarn and silver thread, in which Lycra spandex yarn provides elasticity, dryarn polypropylene fiber is thermally insulating and heat-storing, and silver thread destroys the cell structure of microorganisms through silver ions to achieve long-lasting antibacterial. The fabric improves the comfort and sanitary safety of wearing through the synergistic effect of moisture absorption and perspiration of the surface layer and warmth and antibacterial of the inner layer. At the same time, it has far-infrared performance, effectively regulates body temperature, reduces heat loss, and meets the needs of different environments and activities. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Schematic diagram of core-spun yarn.

[0026] Figure 2 , Figure 3 This is the inspection and testing report diagram. DETAILED DESCRIPTION

[0027] The parameters of the specific chemical substances used in the examples are from the following sources:

[0028] The circular knitting machine manufacturer is Jinhua Emily Knitting Co., Ltd. and the model is SM8-TOP2.

[0029] Bamboo charcoal powder: 2000 mesh.

[0030] Polyester chips: The manufacturer is Shandong Shunxinlong New Material Technology Co., Ltd., model is CZ-318.

[0031] Polyester DTY oil agent: The active ingredient content is 98.5%, the manufacturer is Yixing Jiateng Chemical Co., Ltd., and the model is TK-3182A.B.

[0032] Polyethylene: The manufacturer is Dongguan Longhuang Plastic Raw Materials Co., Ltd., and the brand number is 118P.

[0033] Pineapple leaf extract: 100 mesh, Ningxia Vanilla Biotechnology Co., Ltd., product number is xcsw20210322.

[0034] Core-spun yarn: The manufacturer is Haining Chuangwei Spandex Co., Ltd. The specifications are 20D lycra spandex and 50D dryarn polypropylene. The fineness of lycra spandex is 20D, and the fineness of dryarn polypropylene is 50D, that is, 20 / 50 polypropylene covered yarn.

[0035] Silver yarn: The manufacturer is Qingdao Yinyuansu Textile Technology Co., Ltd., the specification is 40D / 12FFDY, and the base material is nylon. The manufacturer calls it silver mousse, which means that the metallic silver with a purity of 99.9% is evenly attached to the surface of nylon yarn. This structure not only makes the silver mousse have the textile properties of general yarn, but also gives it the efficacy of silver.

[0036] Example 1

[0037] A one-way moisture-conducting antibacterial fabric comprises a surface fabric and an inner fabric;

[0038] The surface fabric is bamboo charcoal yarn;

[0039] The inner layer fabric is composed of core-spun yarn and silver thread.

[0040] The preparation method of the surface fabric is as follows: 3.0g of bamboo charcoal powder, 0.4g of polyester DTY oil agent and 96.6g of polyester chips are blended, added to an extruder for extrusion granulation to obtain mixed particles, and the mixed particles are melt-spun at 200°C, the spinning temperature is 200°C, and the spinning rate is 3000m / min to obtain the bamboo charcoal yarn.

[0041] The preparation method of the inner layer fabric is as follows: core-spun yarn and silver thread are fed into a circular knitting machine at the same time, and 8 yarns are knitted as one cycle, the first yarn is connected with silver thread, and the second, third, fourth, fifth, sixth, seventh and eighth yarns are connected with core-spun yarn.

[0042] A preparation method of a unidirectional moisture-conducting antibacterial fabric is as follows: a 60.0 g surface fabric with a length and width of 50 cm*50 cm and a 40.0 g inner fabric with a length and width of 50 cm*50 cm are knitted together by a circular knitting machine, and 8 yarns are used as a cycle for knitting, wherein the first, third, fifth and seventh yarns are the surface fabrics, and the second, fourth, sixth and eighth yarns are the inner fabrics; thus, the unidirectional moisture-conducting antibacterial fabric is obtained.

[0043] Comparative Example 1

[0044] A one-way moisture-conducting antibacterial fabric comprises a surface fabric and an inner fabric;

[0045] The surface fabric is polyester yarn;

[0046] The inner layer fabric is composed of core-spun yarn and silver thread.

[0047] The preparation method of the surface fabric is as follows: 0.4g of polyester DTY oil agent is blended with 99.6g of polyester chips, added to an extruder for extrusion granulation to obtain mixed particles, and the mixed particles are melt-spun at 200°C, the spinning temperature is 200°C, and the spinning rate is 3000m / min to obtain the polyester yarn.

[0048] The preparation method of the inner layer fabric is as follows: core-spun yarn and silver thread are fed into a circular knitting machine at the same time, and 8 yarns are knitted as one cycle, the first yarn is connected with silver thread, and the second, third, fourth, fifth, sixth, seventh and eighth yarns are connected with core-spun yarn.

[0049] A preparation method of a unidirectional moisture-conducting antibacterial fabric is as follows: a 60.0 g surface fabric with a length and width of 50 cm*50 cm and a 40.0 g inner fabric with a length and width of 50 cm*50 cm are knitted together by a circular knitting machine, and 8 yarns are used as a cycle for knitting, wherein the first, third, fifth and seventh yarns are the surface fabrics, and the second, fourth, sixth and eighth yarns are the inner fabrics; thus, the unidirectional moisture-conducting antibacterial fabric is obtained.

[0050] Comparative Example 2

[0051] A one-way moisture-conducting antibacterial fabric comprises a surface fabric and an inner fabric;

[0052] The surface fabric is bamboo charcoal yarn;

[0053] The inner layer fabric is core-spun yarn.

[0054] The preparation method of the surface fabric is as follows: 3.0g of bamboo charcoal powder, 0.4g of polyester DTY oil agent and 96.6g of polyester chips are blended, added to an extruder for extrusion granulation to obtain mixed particles, and the mixed particles are melt-spun at 200°C, the spinning temperature is 200°C, and the spinning rate is 3000m / min to obtain the bamboo charcoal yarn.

[0055] The preparation method of the inner layer fabric is as follows: core-spun yarn is fed into a circular knitting machine, and 8 yarns are knitted as one cycle, and the 1st, 2nd, 3rd, 4th, 5th, 6th, 7th and 8th yarns are connected with core-spun yarn.

[0056] A preparation method of a unidirectional moisture-conducting antibacterial fabric is as follows: a 60.0 g surface fabric with a length and width of 50 cm*50 cm and a 40.0 g inner fabric with a length and width of 50 cm*50 cm are knitted together by a circular knitting machine, and 8 yarns are used as a cycle for knitting, wherein the first, third, fifth and seventh yarns are the surface fabrics, and the second, fourth, sixth and eighth yarns are the inner fabrics; thus, the unidirectional moisture-conducting antibacterial fabric is obtained.

[0057] Example 2

[0058] A one-way moisture-conducting antibacterial fabric comprises a surface fabric and an inner fabric;

[0059] The surface fabric is bamboo charcoal yarn;

[0060] The inner layer fabric is composed of core-spun yarn and silver thread.

[0061] The preparation method of the surface fabric is as follows: 3.0g of bamboo charcoal powder, 0.4g of polyester DTY oil agent and 80.6g of polyester chips are blended, added to an extruder for extrusion granulation to obtain mixed particles, and the mixed particles and 16.0g of synergistic resin are melt-spun at 200°C, the spinning temperature is 200°C, and the spinning rate is 3000m / min to obtain the bamboo charcoal yarn.

[0062] The preparation method of the synergistic resin is as follows:

[0063] 2g of pineapple leaf extract is added to 20g of 5wt% sodium carbonate aqueous solution and stirred for 2 hours, dried at 100°C, and after drying, added to 20g of 10wt% acetic acid aqueous solution and stirred for 1 hour, 20g of maleic anhydride is added thereto and continued stirring for 0.5 hours, and dried at 100°C to obtain a modified pineapple leaf extract; 1g of the modified pineapple leaf extract is mixed with 20g of polyethylene and melt-granulated at 130°C to obtain a modified polyethylene, i.e., the synergistic resin.

[0064] The preparation method of the inner layer fabric is as follows: core-spun yarn and silver thread are fed into a circular knitting machine at the same time, and 8 yarns are knitted as one cycle, the first yarn is connected with silver thread, and the second, third, fourth, fifth, sixth, seventh and eighth yarns are connected with core-spun yarn.

[0065] A preparation method of a unidirectional moisture-conducting antibacterial fabric is as follows: a 60.0 g surface fabric with a length and width of 50 cm*50 cm and a 40.0 g inner fabric with a length and width of 50 cm*50 cm are knitted together by a circular knitting machine, and 8 yarns are used as a cycle for knitting, wherein the first, third, fifth and seventh yarns are the surface fabrics, and the second, fourth, sixth and eighth yarns are the inner fabrics; thus, the unidirectional moisture-conducting antibacterial fabric is obtained.

[0066] Example 3

[0067] A one-way moisture-conducting antibacterial fabric comprises a surface fabric and an inner fabric;

[0068] The surface fabric is bamboo charcoal yarn;

[0069] The inner layer fabric is composed of core-spun yarn and silver thread.

[0070] The difference between Example 3 and Example 2 is only the synergistic resin.

[0071] The preparation method of the synergistic resin is as follows:

[0072] 1 g of pineapple leaf extract was mixed with 20 g of polyethylene and melt-granulated at 130° C. to obtain modified polyethylene, namely the synergistic resin.

[0073] A preparation method of a unidirectional moisture-conducting antibacterial fabric is as follows: a 60.0 g surface fabric with a length and width of 50 cm*50 cm and a 40.0 g inner fabric with a length and width of 50 cm*50 cm are knitted together by a circular knitting machine, and 8 yarns are used as a cycle for knitting, wherein the first, third, fifth and seventh yarns are the surface fabrics, and the second, fourth, sixth and eighth yarns are the inner fabrics; thus, the unidirectional moisture-conducting antibacterial fabric is obtained.

[0074] Example 4

[0075] A one-way moisture-conducting antibacterial fabric comprises a surface fabric and an inner fabric;

[0076] The surface fabric is bamboo charcoal yarn;

[0077] The inner layer fabric is composed of core-spun yarn and silver thread.

[0078] The difference between Example 4 and Example 2 is only the synergistic resin.

[0079] The synergistic resin is polyethylene resin.

[0080] A preparation method of a unidirectional moisture-conducting antibacterial fabric is as follows: a 60.0 g surface fabric with a length and width of 50 cm*50 cm and a 40.0 g inner fabric with a length and width of 50 cm*50 cm are knitted together by a circular knitting machine, and 8 yarns are used as a cycle for knitting, wherein the first, third, fifth and seventh yarns are the surface fabrics, and the second, fourth, sixth and eighth yarns are the inner fabrics; thus, the unidirectional moisture-conducting antibacterial fabric is obtained.

[0081] Test Example 1

[0082] The one-way moisture-conducting antibacterial fabrics prepared by the preparation methods of Example 1 and Comparative Examples 1-2 were tested for antibacterial performance and antibacterial rate, and the test bacteria were Staphylococcus aureus, Escherichia coli, and Candida albicans. The test was based on the industry standard FZ / T 73023-2006 "Antibacterial Knitwear", and the data are summarized in Table 1.

[0083] Table 1 Antibacterial performance test

[0084] Example 1 Comparative Example 1 Comparative Example 2 Staphylococcus aureus inhibition rate 99.9％ 97.4％ 96.8％ Escherichia coli inhibition rate 99.5％ 94.9％ 94.6％ Candida albicans inhibition rate 99.9％ 94.3％ 94.0％

[0085] Compared with the embodiment, the unidirectional moisture-conducting antibacterial fabric of comparative example 1 is not added with bamboo charcoal powder, and the unidirectional moisture-conducting antibacterial fabric of comparative example 2 is not added with silver thread, and the inhibitory effect on Staphylococcus aureus, Escherichia coli, and Candida albicans is significantly lower than that of embodiment 1. The surface fabric of the unidirectional moisture-conducting antibacterial fabric of embodiment 1 of the present invention is bamboo charcoal yarn, and bamboo charcoal powder and oil agent are added. Bamboo charcoal powder is a powdery substance made by high-temperature carbonization and grinding of bamboo, and has rich pore structure and good adsorption. When the body temperature rises, the pores of bamboo charcoal powder expand and release negative ions, which effectively absorb odor, dehumidify and absorb sweat. In the preparation of bamboo charcoal yarn, bamboo charcoal powder is blended and granulated with polyester slices, and the addition of oil agent corrodes the surface of the fabric to form a microporous structure, which increases the specific surface area of ​​bamboo charcoal yarn, and further improves the moisture absorption, perspiration and quick-drying performance of the fabric. Silver threads are added to the inner layer of the one-way moisture-conducting antibacterial fabric of Example 1. Silver ions have excellent antibacterial properties and can continue to maintain their antibacterial function after being washed hundreds of times in clothing fabrics. The high biological activity of silver ions can destroy the integrity of bacterial cell walls and cell membranes, leading to bacterial death, thereby inhibiting their growth and reproduction. Combined with the antibacterial properties of the microporous structure of bamboo charcoal yarn, the antibacterial properties are synergistically exerted to improve the overall antibacterial properties of the fabric.

[0086] Test Example 2

[0087] The unidirectional moisture-conducting antibacterial fabrics prepared by the preparation methods of Example 1 and Comparative Examples 1-2 were tested for moisture absorption and quick-drying performance and moisture absorption and perspiration wicking performance, wherein the inner layer is the soaked surface and the surface layer is the permeable surface. The test was conducted in accordance with the national standard GB / T 21655.2-2019 "Evaluation of Moisture Absorption and Quick-drying Properties of Textiles Part 2: Dynamic Moisture Transfer Method", and the data are summarized in Table 2.

[0088] Wetting time refers to the time from when the liquid contacts the surface of the fabric to when the fabric begins to absorb water.

[0089] Water absorption rate refers to the rate of increase of water content of fabric per unit time.

[0090] The maximum wetting radius refers to the maximum radius of the wetting area from the beginning of the fabric being soaked to the end of the specified time.

[0091] Liquid water diffusion rate refers to the cumulative transfer rate of liquid water along the radial direction when the fabric surface is soaked and diffuses to the maximum soaking radius.

[0092] One-way transfer index refers to the ability of liquid water to transfer from the soaked surface of the fabric to the permeable surface.

[0093] Table 2 Moisture absorption and perspiration performance test

[0094]

[0095]

[0096] It can be seen from the above table that the one-way moisture-conducting antibacterial fabric of Example 1 performs well in the tests of moisture absorption and quick-drying performance and moisture absorption and perspiration wicking performance. Comparative Example 1 does not add bamboo charcoal powder on the basis of Example 1, and Comparative Example 2 does not add silver thread on the basis of Example 1. The inner layer of the fabric is the water-immersed surface, and the surface layer is the permeable surface. The soaking time of the inner layer of the water-immersed surface of Example 1 and Comparative Example 2 is judged to be level 4, indicating that it can quickly absorb and absorb moisture to soak it, but the water absorption rate of the permeable surface of the surface layer is level 3, indicating that the inner layer of the fabric of Example 1 and Comparative Example 2 has quickly discharged moisture to the outside of the fabric after soaking, accelerating evaporation and making it easier to dry quickly. The maximum soaking radius of the permeable surface and the diffusion rate of liquid water on the permeable surface of Comparative Example 1 are lower than those of Example 1 and Comparative Example 2, and the soaking time and water absorption rate of the water-immersed surface and the permeable surface are both level 3, indicating that the inner layer is not quickly drained after soaking, which can be explained that the lack of bamboo charcoal powder affects the hygroscopicity and quick-drying properties. The reason lies in the microporous structure and adsorption of bamboo charcoal yarn. The hydrophobic porous structure of bamboo charcoal powder provides a larger specific surface area, and the micropores formed by oil corrosion also help to quickly drain water, accelerating water absorption and evaporation. The higher the unidirectional conductivity index level, the stronger the drainage capacity of the immersion surface to the permeation surface. The bamboo charcoal yarn in the inner layer of Example 1 and Comparative Example 2 helps the overall moisture absorption, quick drying and moisture absorption and perspiration of the fabric.

[0097] Test Example 3

[0098] The one-way moisture-conducting antibacterial fabrics prepared by the preparation methods of Examples 1-4 were tested for far-infrared performance. The test was based on the national standard GB / T 30127-2013 "Testing and Evaluation of Far-Infrared Performance of Textiles". For general samples, if the far-infrared emissivity of the sample is not less than 0.88, and the far-infrared radiation temperature rise is not less than 1.4°C, it means that the sample has far-infrared performance. The far-infrared emissivity and far-infrared radiation temperature rise were tested, and the data are summarized in Table 3.

[0099] Table 3 Far infrared performance test

[0100] Example 1 Example 2 Example 3 Example 4 Far infrared emissivity 0.91 0.93 0.92 0.91 Far infrared radiation temperature rise value 1.7 1.9 1.8 1.8

[0101] The far-infrared emissivity indicates the ratio of the normal far-infrared radiation intensity of the sample to that of the standard black body plate at the same temperature under specified conditions. The far-infrared radiation temperature rise value indicates the temperature rise value of the test surface of the sample after the far-infrared radiation source irradiates the sample at a constant irradiation intensity for a certain period of time. The greater the far-infrared emissivity and the higher the far-infrared radiation temperature rise value, the better the far-infrared performance of the sample textile. Improving the far-infrared performance of textiles can promote blood circulation, improve oxygen supply, maintain a stable body temperature, and reduce heat loss by reflecting and absorbing the heat emitted by the human body. It can also be extended to absorbing far-infrared rays such as sunlight and converting them into heat energy, so that the warmth effect can be maintained in cold environments.

[0102] In the one-way moisture-conducting antibacterial fabrics of Examples 1-4, the far-infrared emissivity of all examples is not less than 0.88, and the far-infrared radiation temperature rise is not less than 1.4°C, indicating that these fabrics all have good far-infrared performance. The inner layer fabric in the embodiment of the present invention is composed of core-spun yarn and silver thread, and the core-spun yarn is composed of lycra spandex yarn and dryarn polypropylene yarn. Lycra spandex provides good elasticity and comfort, and dryarn polypropylene is due to its natural water repellency and low thermal conductivity. Effectively heat preservation and heat storage, regulate body temperature, and reduce heat loss. Examples 2-4 add synergistic resin to the preparation of the inner layer fabric on the basis of the scheme of Example 1, wherein Example 2 first modifies the pineapple leaf extract with acetic acid and maleic anhydride, and then melts and granulates with polyethylene resin to obtain a synergistic resin. Compared with Example 2, Example 3 does not add maleic anhydride to modify the pineapple leaf extract, and Example 4 does not add pineapple leaf extract. By comparison, it can be seen that the far-infrared performance of Example 2 is higher than that of other embodiments. The reason is that the specific heat capacity of polyethylene is large, which can absorb and store more heat. The hydroxyl groups on the surface of the pineapple leaf extract are modified by acetylation to generate ester groups with weaker polarity, so that the surface hydrophobicity and thermal stability are improved, ensuring that it can be stably melt-granulated and not destroyed in the subsequent process. The interface strength of the pineapple leaf extract and the polyethylene is improved after the modification. After the modified pineapple leaf extract is grafted, its compatibility with polyester slices is better, and the dispersibility of bamboo charcoal powder is also improved. The application of the fabric plays a positive role in improving the tensile strength and the growth rate at break, indicating that the addition of the synergistic resin can further improve the overall far-infrared performance. In the one-way moisture-conducting antibacterial fabric of the present invention, the inner layer can lock the heat and the surface layer can absorb the heat, and the combined effect enables the fabric of the present invention to better maintain the temperature stability in the face of temperature changes.

[0103] Test Example 4

[0104] The one-way moisture-conducting antibacterial fabric obtained in Example 1 was sent for inspection, and the inspection report is shown in FIG. Figure 2-3 As shown, Figure 2 Including: odor, fiber content, static electricity performance before washing, moisture absorption and quick drying before and after washing, moisture absorption and perspiration before and after washing, water resistance and color fastness, Figure 3 Including: color fastness to dry friction, color fastness to acid sweat stains, color fastness to alkali sweat stains, formaldehyde content, pH value, decomposable carcinogenic aromatic amine dyes, antibacterial properties, and far-infrared properties before and after washing.

[0105] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A one-way moisture-conducting antibacterial fabric, characterized in that: The one-way moisture-conducting antibacterial fabric comprises a surface layer fabric and an inner layer fabric; The weight ratio of the surface fabric and the inner fabric is 58-62%:38-42%; The surface fabric is bamboo charcoal yarn; The inner layer fabric is composed of core-spun yarn and silver thread.

2. The one-way moisture-conducting antibacterial fabric according to claim 1, characterized in that: The preparation method of the surface layer fabric is as follows: bamboo charcoal powder, oil agent and polyester chips are mixed, added to an extruder for extrusion granulation to obtain mixed particles, and the mixed particles and synergistic resin are melt-spun to obtain the bamboo charcoal yarn.

3. The one-way moisture-conducting antibacterial fabric according to claim 2, characterized in that: In the preparation method of the surface fabric, the weight ratio of bamboo charcoal powder, oil agent, polyester slice and synergistic resin is 1-4%: 0.1-0.5%: 75-97%: 0-24%.

4. The one-way moisture-conducting antibacterial fabric according to claim 2, characterized in that: The preparation method of the synergistic resin is as follows, in parts by weight: 1-2 parts of pineapple leaf extract are added to 10-30 parts of 5-10wt% sodium carbonate aqueous solution, stirred for 1-2 hours, dried at 90-100°C, added to 10-30 parts of 10-20wt% acetic acid aqueous solution after drying, stirred for 0.5-1 hour, 10-30 maleic anhydride is added thereto, stirred for 0.5-1 hour, and dried at 90-100°C to obtain modified pineapple leaf extract; 1-2 parts of modified pineapple leaf extract are mixed with 15-25 parts of polyethylene, melt granulated to obtain modified polyethylene, i.e. the synergistic resin.

5. The one-way moisture-conducting antibacterial fabric according to claim 1, characterized in that: The preparation method of the inner layer fabric is as follows: core-spun yarn and silver thread are fed into a circular knitting machine at the same time, and 8 yarns are knitted as one cycle, the first yarn is connected with silver thread, and the second, third, fourth, fifth, sixth, seventh and eighth yarns are connected with core-spun yarn.

6. The one-way moisture-conducting antibacterial fabric according to claim 5, characterized in that: The core-spun yarn is made of core yarn and covering yarn, and the weight ratio of the core yarn to the covering yarn is 10-20%:80-90%.

7. The one-way moisture-conducting antibacterial fabric according to claim 6, characterized in that: The core yarn is Lycra spandex yarn.

8. The one-way moisture-conducting antibacterial fabric according to claim 6, characterized in that: The covered yarn is dryarn polypropylene yarn.

9. A method for preparing the one-way moisture-conducting antibacterial fabric according to any one of claims 1 to 8, characterized in that: The preparation method is as follows: the surface fabric and the inner fabric are knitted together by a circular knitting machine, and the knitting is performed with 8 yarns as a cycle, the 1st, 3rd, 5th and 7th yarns are the surface fabric, and the 2nd, 4th, 6th and 8th yarns are the inner fabric; or the 1st, 3rd, 5th and 7th yarns are the inner fabric, and the 2nd, 4th, 6th and 8th yarns are the surface fabric; thus, the unidirectional moisture-conducting antibacterial fabric is obtained.

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