Durable antibacterial, deodorant and wear-resistant bamboo fiber and polyester composite fabric and processing device thereof

Abstract

The invention discloses a durable antibacterial, deodorant and wear-resistant bamboo fiber and polyester composite fabric and a processing device thereof. The composite fabric is composed of 35-45% of modified bamboo fibers, 40-50% of functionalized polyester fibers, 3-5% of a nano-silver particle carrier system, 4-6% of a plant source antibacterial deodorant complex, 2-4% of an interface compatilizer and 2-4% of a wear-resistant reinforcing agent, and function optimization is achieved through a three-layer structural design. The processing device comprises an intelligent batching system, a multifunctional pretreatment unit, an ultrasonic-assisted impregnation system, a microwave-hot air composite drying unit, a plasma surface activating treatment unit, an interface bonding strengthening unit and an intelligent control system. After the fabric is washed for 50 times, the antibacterial rate is still kept at 90% or above, the Martindale wear resistance reaches 25,000 revolutions or above, the deodorization efficiency reaches 98%, the processing time is shortened by 35%, and the energy consumption is reduced by 40%. The problems that a traditional antibacterial fabric is insufficient in durability, not firm in interface bonding, low in processing efficiency and the like are solved, and the fabric is suitable for the fields of sportswear, medical protection, home textiles and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of fabric textile, and particularly to a durable antibacterial, deodorant and wear-resistant bamboo fiber polyester composite fabric and its processing device. Background Art

[0002] Textile materials are essential basic materials in human daily life. With the improvement of living standards and the enhancement of health awareness, the demand for functional fabrics with antibacterial, deodorant and wear-resistant properties is increasing day by day. Especially in special fields such as medical, sports and military, the requirements for fabric functionality are more stringent.

[0003] As a new type of environmentally friendly fiber material, bamboo fiber has excellent properties such as natural antibacterial and moisture absorption and breathability, and has gradually been applied to the textile field. Polyester fiber is famous for its excellent wear resistance and morphological stability. Effectively compounding these two fibers with different properties can theoretically obtain a composite fabric that combines the respective advantages of bamboo fiber and polyester.

[0004] Currently, there are already various antibacterial fabrics on the market, and the antibacterial function is mainly achieved through the following several technologies:

[0005] Inorganic antibacterial agent technology: such as metal ion antibacterial technologies such as silver ions, copper ions, zinc ions, etc. This type of technology has a significant antibacterial effect, but the durability is insufficient, and the antibacterial effect significantly decreases after multiple washes. For example, the antibacterial rate of a typical silver ion-containing antibacterial textile drops from 99% to below 70% after 20 washes in actual applications.

[0006] Organic antibacterial agent technology: such as organic antibacterial agents such as quaternary ammonium salts and phenols. This type of technology is easy to implement, but there are problems such as a narrow antibacterial spectrum, easy migration, and potential risks to human health. Most textile materials containing organic antibacterial agents are prone to cause skin allergies and have poor environmental compatibility.

[0007] Natural antibacterial agent technology: such as chitosan, plant extracts, etc. This type of technology is environmentally friendly and safe, but the antibacterial effect and stability are poor. Although the antibacterial fabric containing tea polyphenols has a good initial antibacterial effect, its durability is poor, and the processing process is complex and the cost is high.

[0008] In terms of bamboo fiber and polyester composite fabrics, the existing technologies mainly include:

[0009] Mechanical blending technology: Bamboo fiber and polyester fiber are made into blended yarns through mechanical methods such as carding and blending, and then woven into fabrics. This method is simple and easy to implement, but the two fibers are only physically mixed, and the interfacial bonding is not firm, which easily causes problems such as pilling and poor wear resistance. Actual tests show that the wear resistance of this type of fabric is insufficient in actual applications, and it can only reach 15,000 revolutions in the Martindale wear resistance test.

[0010] Chemical modification technology: By chemically modifying the fiber surface, the interfacial bonding force is enhanced. For example, in the bamboo fiber / polyester composite material modified by a silane coupling agent, although the interfacial bonding force is improved, the process is complex, the cost is high, and the modifier may affect the original properties of the fiber.

[0011] Coating technology: The antibacterial function is achieved by coating an antibacterial coating on the fabric surface. Although the nano-silver coating antibacterial textile has good initial antibacterial effect, the coating is easy to fall off, affecting the antibacterial durability and the hand feeling of the fabric.

[0012] In terms of processing equipment, the existing technologies mainly include:

[0013] Traditional padding process: Functional finishing is carried out by the method of padding-drying. This process is simple, but the uniformity is poor. The functional substances are mainly attached to the fiber surface, easy to fall off, and the durability is insufficient.

[0014] Microcapsule technology: The functional substances are encapsulated in microcapsules and then finished on the fabric. This technology can extend the release time of the functional substances, but the microcapsule wall materials are easy to break, and the finishing process is complex.

[0015] Graft copolymerization technology: Functional groups are grafted onto the fiber molecular chain through chemical reactions. This technology has good durability, but the process conditions are harsh, the energy consumption is high, and the cost is high.

[0016] The above existing technologies all have the following deficiencies:

[0017] The durability of the antibacterial function is insufficient, and the function decreases significantly after multiple washes;

[0018] The interfacial bonding between bamboo fiber and polyester fiber is not firm, and the wear resistance of the composite fabric is poor;

[0019] The antibacterial agent is easy to migrate, which may affect human health and the environment;

[0020] The processing technology is complex, the energy consumption is high, and the production efficiency is low;

[0021] Some technologies have a narrow antibacterial spectrum and are difficult to meet the requirements of various application scenarios.

[0022] Therefore, it is urgent to develop a bamboo fiber polyester composite fabric with durable antibacterial, deodorant and wear resistance and its efficient processing equipment to solve the above technical problems and meet the growing market demand for functional textiles. Summary of the Invention

[0023] Based on the above purposes, the present invention provides a bamboo fiber polyester composite fabric with durable antibacterial, deodorant and wear resistance and its processing equipment. A bamboo fiber polyester composite fabric with durable antibacterial, deodorant and wear resistance is characterized in that the composite fabric is composed of the following components in weight percentage:

[0024] Modified bamboo fiber: 35 - 45%;

[0025] Functionalized polyester fiber: 40 - 50%;

[0026] Nano - silver particle carrier system: 3 - 5%;

[0027] Plant - derived antibacterial and deodorant complex: 4 - 6%;

[0028] Interface compatibilizer: 2 - 4%;

[0029] Wear - resistant enhancer: 2 - 4%;

[0030] Among them, the modified bamboo fiber is treated by alkali treatment and silanization; the functionalized polyester fiber is treated by plasma activation and chitosan grafting; the nano - silver particle carrier system uses β - cyclodextrin to encapsulate nano - silver; the plant - derived antibacterial and deodorant complex is treated by micro - encapsulation.

[0031] Furthermore, the fabric adopts a three - layer structure design, including:

[0032] Outer layer: mainly composed of functionalized polyester fiber, providing wear resistance and structural support;

[0033] Middle layer: a blend of bamboo fiber and polyester fiber, forming a microporous structure;

[0034] Inner layer: mainly composed of modified bamboo fiber, providing skin - friendly property and moisture absorption and perspiration function;

[0035] Each layer is combined through needling and hot - melt processes to form an integral composite structure.

[0036] Furthermore, the plant - derived antibacterial and deodorant complex is prepared from tea polyphenols, curcumin and rosemary essential oil according to a mass ratio of 3:2:1, and is micro - encapsulated using arabic gum and maltodextrin as wall materials.

[0037] Furthermore, the interface compatibilizer is an organosilicon - modified polyurethane containing isocyanate end groups, with a molecular weight of 8000 - 10000 Da; the wear - resistant enhancer is a composite of polytetrafluoroethylene nanoparticles and γ - aminopropyltrimethoxysilane coupling agent.

[0038] Furthermore, the device includes:

[0039] Intelligent batching system, used to automatically measure each component according to the formula;

[0040] Multifunctional pretreatment unit, including an alkali solution treatment tank, a pulsed electric field generator and a liquid stirring system;

[0041] Ultrasonic - assisted impregnation system, including a frequency - adjustable ultrasonic generator and a precise temperature control system;

[0042] The microwave-hot air composite drying unit includes a microwave generator and a hot air circulation system;

[0043] The plasma surface activation treatment unit is used to generate active groups to enhance the subsequent treatment effect;

[0044] The interface bonding strengthening unit includes an ultraviolet photocatalytic system and a chemical vapor deposition device;

[0045] The intelligent control system is used to monitor in real time and automatically adjust the parameters of the whole process.

[0046] Furthermore, the ultrasonic frequency range of the ultrasonic-assisted impregnation system is 20 - 60 kHz, and the temperature control range is 38 - 42 °C; the microwave frequency of the microwave-hot air composite drying unit is 2.45 GHz, and the hot air temperature gradient is set to 120 °C at the inlet and 90 °C at the outlet.

[0047] Furthermore, the working pressure of the plasma surface activation treatment unit is 50 - 100 Pa, and the power is 300 - 500 W; the ultraviolet light wavelength of the interface bonding strengthening unit is 365 nm, and the light intensity is 50 - 100 mW / cm².

[0048] Furthermore, the method for preparing the composite fabric includes the following steps:

[0049] Step 1. Pretreatment of bamboo fibers: Immerse the bamboo fibers in a 2% NaOH solution, maintain the temperature at 60 ± 2 °C, after treatment for 2 hours, wash and dry;

[0050] Step 2. Surface modification of bamboo fibers: Immerse the pretreated bamboo fibers in a 3% APTES ethanol solution, react at 40 °C for 3 hours, and then cure at 90 °C for 1 hour;

[0051] Step 3. Activation of polyester fibers: Place the polyester fibers in oxygen plasma for treatment for 5 minutes, and set the power to 400 W;

[0052] Step 4. Graft modification of polyester fibers: Immerse the activated polyester fibers in a 2% chitosan acetate solution and react at 38 °C for 4 hours;

[0053] Step 5. Preparation of the functional liquid: Disperse the nano-silver carrier system, the plant-derived antibacterial and deodorant complex, the interface compatibilizer, and the wear-resistant enhancer in water according to the formula ratio and mix evenly;

[0054] Step 6. Fiber mixing: Mix the modified bamboo fibers and the functionalized polyester fibers in proportion and card them into a web using a carding machine;

[0055] Step 7. Functionalization treatment: Immerse the fiber web in the functional liquid and use ultrasonic-assisted impregnation with a frequency of 35 kHz for 20 minutes;

[0056] Step VIII. Drying and curing: Dry using a microwave-hot air composite drying system;

[0057] Step IX. Layer forming: Arrange the dried fiber web in a three-layer structure and form it through needling and hot pressing;

[0058] Step X. Surface treatment: After subjecting the composite fabric to plasma treatment, spray an interface strengthening agent containing a UV curable agent and cure it under UV light irradiation.

[0059] Furthermore, in Step IX, the needling density is 60 - 100 needles / cm2, the hot pressing temperature is 160 - 190 °C, the pressure is 1.0 - 2.0 MPa, and the time is 2 - 5 minutes.

[0060] Furthermore, application of the composite fabric in sportswear or home textiles.

[0061] Advantages of the present invention: The durable antibacterial, deodorizing, and wear-resistant bamboo fiber polyester composite fabric and its processing device provided by the present invention innovatively adopt technologies such as β-cyclodextrin inclusion of nano-silver, microencapsulation of plant-derived antibacterial and deodorizing agents, silicone-modified polyurethane interface compatibility, and ultrasonic-microwave-plasma composite processing technology, successfully solving technical problems such as insufficient durability, weak interface bonding, and low processing efficiency existing in traditional antibacterial fabrics. After 50 standard washes, the antibacterial rate of the fabric remains above 90%, the Martindale wear resistance is increased by 40% to reach more than 25,000 revolutions, the deodorizing efficiency is as high as 98%, while the processing time is shortened by 35% and the energy consumption is reduced by 40%. It not only has excellent functionality and durability but also has good environmental safety and processing economy, and can be widely applied in fields such as high-end sportswear, medical protective supplies, military clothing, and home textiles, with significant technological innovation value and broad market application prospects. Description of the Drawings

[0062] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only those of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0063] Figure 1 It is a schematic diagram of the three-layer structure of the composite fabric of the present invention;

[0064] Figure 2 It is a schematic diagram of the process flow of the composite fabric processing device of the present invention;

[0065] Figure 3 It is a schematic diagram of the functional components and action mechanism of the composite fabric of the present invention;

[0066] Figure 4 Schematic diagram of the manufacturing process flow of the present invention;

[0067] Figure 5 Schematic diagram of the performance comparison between the present invention and the traditional technology in the embodiment of the present invention. Detailed implementation manners

[0068] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; moreover, the accompanying drawings are only for more specifically describing the embodiments, and are not intended to specifically limit the present invention.

[0069] It should be pointed out that in the specification, when referring to "an embodiment", "embodiment", "exemplary embodiment", "some embodiments", etc., it indicates that the described embodiment may include specific features, structures or characteristics, but not necessarily every embodiment includes such specific features, structures or characteristics. In addition, when combining an embodiment to describe a specific feature, structure or characteristic, implementing such feature, structure or characteristic in combination with other embodiments (whether explicitly described or not) should be within the knowledge scope of those skilled in the relevant art.

[0070] Generally, the terms can be understood at least in part from their use in the context. For example, at least in part depending on the context, the term "one or more" used herein can be used to describe any feature, structure or characteristic in a singular sense, or can be used to describe a combination of features, structures or characteristics in a plural sense. In addition, the term "based on" can be understood as not necessarily intended to convey a set of exclusive factors, but instead, at least in part depending on the context, allowing the existence of other factors that are not necessarily explicitly described.

[0071] Specifically refer to Figure 1 as shown

[0072] Embodiment 1: Preparation of composite fabric

[0073] Raw material preparation

[0074] 1. Modified bamboo fiber: Select bamboo fiber with an average length of 38 mm and a fineness of 1.56 dtex. After alkali treatment, it is surface-modified with 3-aminopropyltriethoxysilane (APTES). The content of the modified bamboo fiber is 40% by weight.

[0075] 2. Functionalized polyester fiber: Select polyester staple fiber with an average length of 51 mm and a fineness of 1.33 dtex. After plasma treatment, it is graft-modified with chitosan. The content of the functionalized polyester is 45% by weight.

[0076] 3. Silver Nanoparticle Carrier System: β-cyclodextrin is used to encapsulate silver nanoparticles, and the particle size of silver nanoparticles is controlled within 5 - 20 nm. The mass ratio of silver nanoparticles to β-cyclodextrin is 1:5, and the content of this system in the composite fabric is 4 wt%.

[0077] 4. Plant-derived Antibacterial and Deodorant Complex: Tea polyphenols, curcumin, and rosemary essential oil are formulated according to the mass ratio of 3:2:1, and microencapsulated using gum arabic and maltodextrin as wall materials. The content of this complex in the fabric is 5 wt%.

[0078] 5. Interface Compatibilizer: Organosilicon-modified polyurethane containing isocyanate end groups is used, with a molecular weight of 8000 - 10000 Da, and the content in the fabric is 3 wt%.

[0079] 6. Wear-resistant Reinforcing Agent: Polytetrafluoroethylene nanoparticles (PTFE, particle size 50 - 100 nm) are compounded with γ-aminopropyltrimethoxysilane coupling agent, and the content in the fabric is 3 wt%.

[0080] Preparation Steps

[0081] 1. Pretreatment of Bamboo Fibers: Immerse bamboo fibers in a 2% NaOH solution, maintain the temperature at 60 ± 2 °C, after treatment for 2 hours, wash and dry until the moisture content is less than 8%.

[0082] 2. Surface Modification of Bamboo Fibers: Immerse the pretreated bamboo fibers in a 3% APTES ethanol solution, control the liquor ratio at 1:20, react at 40 °C for 3 hours, then cure at 90 °C for 1 hour, wash and dry.

[0083] 3. Activation of Polyester Fibers: Place polyester fibers in oxygen plasma for 5 minutes, set the power at 400 W, and the pressure at 80 Pa.

[0084] 4. Graft Modification of Polyester Fibers: Immerse the activated polyester fibers in a 2% chitosan acetate solution, adjust the pH value to 5.5, add EDC / NHS as a coupling agent, react at 38 °C for 4 hours, wash and dry.

[0085] 5. Preparation of Silver Nanoparticle Carrier: Prepare silver nanoparticles by the sodium citrate reduction method, and then compound with β-cyclodextrin under ultrasonic assistance, with an ultrasonic frequency of 40 kHz and a treatment time of 30 minutes.

[0086] 6. Microencapsulation of Plant-derived Antibacterial Agent: Use the spray drying method, with an inlet temperature of 160 °C and an outlet temperature of 80 °C to prepare microencapsulated antibacterial agent.

[0087] 7. Preparation of functional liquid: The nano-silver carrier system, plant-derived antibacterial and deodorant complex, interfacial compatibilizer, and wear-resistant enhancer are dispersed in water according to the formula ratio and mixed evenly by a high-speed shear disperser to form a functional liquid.

[0088] 8. Fiber mixing: The modified bamboo fiber and functionalized polyester fiber are mixed in proportion and carded into a web by a carding machine.

[0089] 9. Functionalization treatment: The fiber web is impregnated in the functional liquid with a liquor ratio of 1:15, and ultrasonic-assisted impregnation is used with a frequency of 35 kHz and a treatment time of 20 minutes.

[0090] 10. Dehydration: It is extruded by a pressure roller until the liquid absorption rate reaches 180%.

[0091] 11. Drying and curing: The wet fiber web is fed into a microwave-hot air composite drying system, the microwave power is set at 2 kW, the hot air temperature is controlled at 110 ± 5 °C, and the drying time is 15 minutes.

[0092] 12. Layer forming: The dried fiber web is arranged in the structure of "polyester enrichment layer - mixed layer - bamboo fiber enrichment layer", and is formed by needling and hot pressing. The needling density is 80 needles / cm2, the hot pressing temperature is 180 °C, the pressure is 1.5 MPa, and the time is 3 minutes.

[0093] 13. Surface treatment: After the composite fabric is treated by plasma, an interfacial strengthening agent containing a UV curable agent is sprayed and cured under 365 nm UV light irradiation for 5 minutes.

[0094] 14. Final product inspection: Detect the antibacterial property, deodorant property, wear resistance, washing fastness and other indicators of the fabric.

[0095] Embodiment 2: Structure and operation of the processing device

[0096] Refer to Figure 2 As shown in the figure, the device is composed as follows:

[0097] 1. Intelligent batching system: It includes raw material storage tanks, precision metering devices, high-efficiency mixers, and on-line monitoring units.

[0098] 2. Multifunctional pretreatment unit: It includes an alkali liquor treatment tank, a pulsed electric field generator, a liquid stirring system, and an automatic transfer device.

[0099] 3. Ultrasonic-assisted impregnation system: It includes a frequency-adjustable ultrasonic generator (20 - 60 kHz), a precise temperature control system (±0.5 °C), an impregnating liquid circulation and filtration device, and a real-time monitoring system for impregnation depth.

[0100] 4. Microwave-Hot Air Composite Drying Unit: It includes a 2.45 GHz microwave generator (maximum power 6 kW), a hot air circulation system, a temperature and humidity sensor network, and a thermal efficiency optimization control system.

[0101] 5. Plasma Surface Activation Treatment Unit: It includes a low-temperature plasma generator, a vacuum system, a gas supply system, and a surface energy measurement device.

[0102] 6. Interface Bonding Strengthening Unit: It includes an ultraviolet photocatalytic system, a chemical vapor deposition device, a curing degree monitoring system, and a tension control device.

[0103] 7. Intelligent Control System: It includes a central controller, an industrial Internet of Things platform, a parameter optimization algorithm, and a quality traceability database.

[0104] Device Operation Mode

[0105] 1. Intelligent Batching: The system automatically measures each component according to the formula to ensure that the metering accuracy is better than ±0.1%, and at the same time, it online monitors the mixing uniformity.

[0106] 2. Pretreatment Process: After the fabric is impregnated in the lye treatment tank for a predetermined time, it enters the pulsed electric field treatment area. The electric field strength is 2 - 5 kV / cm, the pulse width is 20 μs, the frequency is 200 Hz, and the treatment time is 90 seconds.

[0107] 3. Ultrasonic Impregnation: The pretreated fabric enters the ultrasonic impregnation system. The ultrasonic power density is controlled at 0.5 - 0.8 W / cm2, the temperature is maintained at 40 ± 1 °C, and the impregnation time is automatically adjusted within the range of 15 - 25 minutes according to the fabric thickness.

[0108] 4. Composite Drying: The impregnated fabric first undergoes preliminary mechanical dehydration, and then enters the microwave-hot air composite drying unit. The microwave power is dynamically adjusted according to the moisture content of the fabric, and the hot air temperature gradient is set to 120 °C at the inlet and 90 °C at the outlet. The energy consumption of the entire drying process is reduced by 40%.

[0109] 5. Plasma Treatment: The dried fabric passes through the plasma surface activation treatment unit. The oxygen flow rate is 50 sccm, the treatment time is 180 seconds, the power is 450 W, and the pressure is 85 Pa, significantly improving the polarity and active group density on the fabric surface.

[0110] 6. Interface Bonding Strengthening: The activated fabric enters the interface bonding strengthening unit, first undergoes chemical vapor deposition treatment for 5 minutes, and then is cured under ultraviolet light irradiation at 365 nm. The light intensity is 80 mW / cm2, and the curing time is automatically adjusted according to the fabric thickness.

[0111] 7. Intelligent Control and Monitoring: During the whole process, the intelligent control system collects data of over 100 parameter points in real time, including temperature, humidity, pH value, impregnation depth, degree of chemical reaction, etc., optimizes the process through preset algorithms, and records the complete production data of each batch of products for quality traceability.

[0112] Embodiment 3: Functional Evaluation Method

[0113] 1. Antibacterial Performance Evaluation: Using the standard method of GB / T20944.3, with Escherichia coli (ATCC8739) and Staphylococcus aureus (ATCC6538) as indicator bacteria, the antibacterial rate of the fabric is measured.

[0114] 2. Deodorant Performance Evaluation: Using the gas bag method specified by the Japanese Association Standard JAA, the deodorant rates of ammonia, acetic acid and isovaleric acid are measured respectively.

[0115] 3. Abrasion Resistance Evaluation: Using the standard method of GB / T21196.2, the abrasion resistance of the fabric is measured using a Martindale abrasion tester.

[0116] 4. Washing Fastness Evaluation: According to GB / T3922 standard, after 50 standard washes, the antibacterial, deodorant and abrasion resistance of the fabric are evaluated again.

[0117] 5. Comfort Evaluation: Indexes such as air permeability, moisture absorption and sweat discharge, and thermal resistance value of the fabric are measured.

[0118] Examples

[0119] Example 1: Preparation and Performance Testing of Basic Formula Composite Fabric

[0120] According to the raw material ratio and preparation steps in Embodiment 1, a composite fabric with a basic formula was prepared. The specific ratio is as follows: modified bamboo fiber 40%, functionalized polyester fiber 45%, nano-silver carrier system 4%, plant-derived antibacterial and deodorant complex 5%, interfacial compatibilizer 3%, abrasion resistance enhancer 3%.

[0121] The prepared composite fabric has the following performance indicators:

[0122] Fabric gram weight: 220 g / m2

[0123] Antibacterial performance: The antibacterial rate against Escherichia coli is 99.2%, and the antibacterial rate against Staphylococcus aureus is 98.7%

[0124] Deodorant performance: The deodorant rate against ammonia is 97.5%, the deodorant rate against acetic acid is 96.8%, and the deodorant rate against isovaleric acid is 98.2%

[0125] Abrasion resistance: The Martindale abrasion resistance reaches 25,600 revolutions

[0126] Washing fastness: After 50 standard washes, the antibacterial rate remains above 92.5%, the deodorization rate remains above 90.3%, and the abrasion resistance decreases by no more than 8%.

[0127] Air permeability: The air permeability is 132 mm / s

[0128] Moisture absorption and sweat wicking: The lateral moisture absorption rate is 5.7 mm / 10 min, and the vertical moisture absorption height is 135 mm / 30 min Example 2: Influence of changing the content of the nano - silver carrier system

[0129] Based on the basic formula, composite fabrics with nano - silver carrier system contents of 3%, 4%, and 5% were prepared respectively, with the proportions of other components remaining unchanged. Comparative tests on antibacterial performance and washing fastness were carried out.

[0130] The results show that:

[0131] 1. When the content of the nano - silver carrier system is 3%, the antibacterial rate against Escherichia coli is 97.3%, and it drops to 89.1% after 50 washes;

[0132] 2. When the content of the nano - silver carrier system is 4%, the antibacterial rate against Escherichia coli is 99.2%, and it drops to 92.5% after 50 washes;

[0133] 3. When the content of the nano - silver carrier system is 5%, the antibacterial rate against Escherichia coli is 99.5%, and it drops to 93.1% after 50 washes.

[0134] Considering the cost - benefit ratio, a nano - silver carrier system content of 4% is the best choice, which can not only ensure high antibacterial performance and washing fastness but also control production costs.

[0135] Example 3: Comparison of different types of plant - derived antibacterial and deodorizing agents

[0136] Based on the basic formula, the following three plant - derived antibacterial and deodorizing agent formulations were used for comparative experiments:

[0137] 1. Formulation A: Tea polyphenol: Curcumin: Rosemary essential oil = 3:2:1

[0138] 2. Formulation B: Tea polyphenol: Eugenol: Lavender essential oil = 2:2:1

[0139] 3. Formulation C: Green tea extract: Curcumin: Lemongrass essential oil = 3:1:1

[0140] The test results show that:

[0141] The deodorization rate for ammonia: Formulation A is 97.5%, Formulation B is 95.3%, and Formulation C is 94.1%

[0142] Deodorization rate for acetic acid: Formula A is 96.8%, Formula B is 97.2%, and Formula C is 93.6%

[0143] Deodorization rate for isovaleric acid: Formula A is 98.2%, Formula B is 96.5%, and Formula C is 97.0%

[0144] Retention rate of comprehensive deodorization performance after 50 washes: Formula A is 92.6%, Formula B is 88.4%, and Formula C is 85.2%

[0145] Taking everything into consideration, Formula A has the best deodorization performance and durability. Therefore, Formula A is selected as the standard formula.

[0146] Example 4: Influence of different processing techniques on fabric properties

[0147] Using the basic formula, composite fabrics are prepared using the following three different processing techniques respectively:

[0148] 1. Technique A: Using conventional impregnation + hot air drying + hot pressing (without ultrasonic, microwave, and plasma treatment)

[0149] 2. Technique B: Using ultrasonic impregnation + hot air drying + hot pressing (without microwave and plasma treatment)

[0150] 3. Technique C: Using ultrasonic impregnation + microwave-hot air composite drying + plasma treatment + hot pressing (complete process)

[0151] Test results show that:

[0152] Antibacterial rate (against Staphylococcus aureus): Technique A is 92.3%, Technique B is 95.6%, and Technique C is 98.7%

[0153] Retention rate of antibacterial rate after 50 washes: Technique A is 80.2%, Technique B is 86.5%, and Technique C is 93.8%

[0154] Abrasion resistance: Technique A is 18,200 revolutions, Technique B is 21,500 revolutions, and Technique C is 25,600 revolutions. Interlayer peeling strength of the fabric: Technique A is 2.1 N / cm, Technique B is 2.8 N / cm, and Technique C is 3.7 N / cm. Processing energy consumption (relative value): Technique A is 100%, Technique B is 85%, and Technique C is 60%

[0155] Processing time (relative value): Technique A is 100%, Technique B is 80%, and Technique C is 65%

[0156] The results show that using the complete Technique C not only significantly improves the functionality and durability of the fabric, but also reduces energy consumption and processing time, having obvious technical advantages.

[0157] Example 5: Influence of Intelligent Control System on Product Quality

[0158] Using the basic formula and complete process, composite fabrics were prepared under the following two control methods respectively:

[0159] 1. Traditional control: Fixed parameter setting, no online monitoring and dynamic adjustment

[0160] 2. Intelligent control: Using an intelligent control system to monitor and optimize process parameters in real time

[0161] Performance tests were carried out on 10 batches of continuously produced products. The results showed that:

[0162] Coefficient of variation of antibacterial performance between batches: 8.3% for traditional control and 2.1% for intelligent control

[0163] Coefficient of variation of deodorization performance between batches: 7.5% for traditional control and 1.8% for intelligent control

[0164] Coefficient of variation of wear resistance performance between batches: 9.2% for traditional control and 2.5% for intelligent control

[0165] Energy utilization efficiency: Intelligent control is 25% higher than traditional control

[0166] First-pass yield of products: 87% for traditional control and 98% for intelligent control

[0167] The results show that the intelligent control system significantly improves the stability and consistency of product quality, while reducing energy consumption and improving production efficiency.

[0168] Example 6: Performance Tests of Fabrics in Different Application Scenarios

[0169] The composite fabrics produced with the basic formula were made into sports T-shirts, medical work uniforms and home bedding respectively, and actual application tests were carried out:

[0170] 1. Application test of sports T-shirts:

[0171] Worn by 10 marathon runners for high-intensity training for 30 consecutive days

[0172] The results show that compared with the control group, the odor of the test group's sportswear was significantly reduced (85% reduction), the number of skin bacteria was reduced by 75%, the fabric had good wear resistance, and there was no obvious pilling and wear

[0173] 2. Application test of medical work uniforms:

[0174] Worn by 15 medical staff in the hospital environment for 45 consecutive days

[0175] The results show that the total number of bacteria on the fabric is reduced by 92% compared with the control group, the odor is reduced by 90%, and the comfort score of medical staff is increased by 35%

[0176] 3. Application test of home bedding:

[0177] It was used in 20 households for 60 consecutive days

[0178] The results show that the total number of bacteria on the sheet is reduced by 88% compared with the control group, the number of dust mites is reduced by 76%, and the comfort score of users is increased by 42%

[0179] All tested fabrics have been washed 20 times at home, and their functionality remains good. The antibacterial rate remains above 90%, the deodorization rate remains above 88%, and there are no obvious changes in appearance and hand feeling

[0180] Example 7: Evaluation of the environmental protection and safety of the fabric

[0181] The environmental protection and safety of the composite fabric produced by the basic formula were evaluated:

[0182] 1. Skin irritation test (ISO10993-10): The result is non-irritating

[0183] 2. Skin sensitization test (ISO10993-10): The result is non-sensitizing

[0184] 3. Cytotoxicity test (ISO10993-5): The cell survival rate is 95.3%, belonging to the non-toxic level

[0185] 4. Nanomaterial migration test: After 50 washes, the migration amount of silver nanoparticles is less than 0.1 ppm, far lower than the safety limit

[0186] 5. Biodegradability test (GB / T19277.1): It is increased by 35% compared with traditional antibacterial fabrics

[0187] 6. Carbon footprint assessment: The carbon emission is reduced by 32% compared with the traditional process

[0188] The comprehensive evaluation results show that the composite fabric of the present invention has good environmental protection and safety, meeting the requirements of sustainable development

[0189] It can be seen from the above examples that the durable antibacterial, deodorizing and wear-resistant bamboo fiber polyester composite fabric of the present invention and its processing device have the following significant advantages:

[0190] 1. The antibacterial and deodorizing effects are significant and durable, and the functionality can still be maintained above 90% after 50 washes

[0191] 2. The wear resistance is excellent, which is more than 40% higher than that of traditional composite fabrics

[0192] 3. The fabric structure is stable, the bonding between layers is firm, and the service life is long.

[0193] 4. The production process is efficient and environmentally friendly, with the energy consumption and processing time reduced by 40% and 35% respectively.

[0194] 5. The product quality is stable, the difference between batches is small, and the first-pass yield is high.

[0195] 6. The actual application effect is good, and it is applicable to various scenarios.

[0196] 7. It is environmentally friendly and safe, harmless to humans and the environment.

[0197] The key innovation points of this invention lie in the adoption of technologies such as β-cyclodextrin inclusion of nano-silver, microencapsulation of plant-derived antibacterial and deodorant agents, silicone-modified polyurethane interfacial compatibility, and ultrasonic-microwave-plasma composite processing technology, which solve problems such as insufficient persistence, weak interfacial bonding, and low processing efficiency of traditional antibacterial fabrics, and have broad application prospects and industrialization value.

[0198] This invention covers any substitutions, modifications, equivalent methods, and solutions made within the essence and scope of this invention. To enable the public to have a thorough understanding of this invention, specific details are elaborated in the following preferred embodiments of this invention. However, those skilled in the art can fully understand this invention even without the description of these details. Additionally, well-known methods, processes, procedures, components, and circuits are not described in detail to avoid unnecessary confusion to the essence of this invention.

[0199] The above are only the preferred embodiments of this invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of this invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of this invention.

Claims

1. A durable antibacterial, deodorizing and wear-resistant bamboo fiber polyester composite fabric, characterized in that: The composite fabric is composed of the following components in weight percentage: Modified bamboo fiber: 35-45%; Functionalized polyester fiber: 40-50%; Nanosilver particle carrier system: 3-5%; Plant-derived antibacterial deodorant complex: 4-6%; Interface compatibilizer: 2-4%; Wear-resistant enhancer: 2-4%; The modified bamboo fiber is treated with alkali and silanized; the functional polyester fiber is treated with plasma activation and chitosan grafting; the nanosilver particle carrier system uses β-cyclodextrin to encapsulate nanosilver; and the plant-derived antibacterial deodorant complex is treated with microencapsulation.

2. The composite fabric according to claim 1, characterized in that: The fabric adopts a three-layer structure design, including: Outer layer: mainly functional polyester fiber, providing wear resistance and structural support; Middle layer: bamboo fiber and polyester fiber are blended to form a microporous structure; Inner layer: mainly made of modified bamboo fiber, providing skin-friendliness and moisture absorption and perspiration wicking functions; The layers are combined through needle punching and hot melt processes to form an overall composite structure.

3. The composite fabric according to claim 1, characterized in that: The plant-derived antibacterial deodorant complex is prepared from tea polyphenols, curcumin and rosemary essential oil in a mass ratio of 3:2:1, and is microencapsulated using gum arabic and maltodextrin as wall materials.

4. The composite fabric according to claim 1, characterized in that: The interfacial compatibilizer is an organosilicon-modified polyurethane containing an isocyanate terminal group, and the molecular weight is 8000-10000Da; the wear-resistant reinforcing agent is a composite of polytetrafluoroethylene nanoparticles and a γ-aminopropyltrimethoxysilane coupling agent.

5. A processing device for preparing the composite fabric according to any one of claims 1 to 4, characterized in that: The device comprises: Intelligent batching system for automatic metering of components according to the recipe; A multifunctional pretreatment unit, including an alkali solution treatment tank, a pulsed electric field generator, and a liquid stirring system; Ultrasonic assisted impregnation system, including adjustable frequency ultrasonic generator and precise temperature control system; A microwave-hot air composite drying unit, comprising a microwave generator and a hot air circulation system; Plasma surface activation treatment unit, used to generate active groups to enhance the effect of subsequent treatment; An interface bonding strengthening unit, including an ultraviolet photocatalytic system and a vapor deposition device; Intelligent control system for real-time monitoring and automatic adjustment of all process parameters.

6. The processing device according to claim 5, characterized in that: The ultrasonic frequency range of the ultrasonic assisted impregnation system is 20-60kHz, and the temperature control range is 38-42°C; the microwave frequency of the microwave-hot air composite drying unit is 2.45GHz, and the hot air temperature gradient is set to 120°C at the inlet and 90°C at the outlet.

7. The processing device according to claim 5, characterized in that: The working pressure of the plasma surface activation treatment unit is 50-100 Pa, and the power is 300-500 W; the ultraviolet light wavelength of the interface bonding strengthening unit is 365 nm, and the light intensity is 50-100 mW / cm2.

8. A method for preparing the composite fabric according to any one of claims 1 to 4, characterized in that: The following steps are involved: Step 1: Pretreatment of bamboo fiber: immerse the bamboo fiber in a 2% NaOH solution at a temperature of 60±2°C for 2 hours, then wash and dry; Step 2: Surface modification of bamboo fiber: immerse the pretreated bamboo fiber in a 3% APTES ethanol solution, react at 40°C for 3 hours, and then cure at 90°C for 1 hour; Step 3: Activation of polyester fiber: Place the polyester fiber in oxygen plasma for 5 minutes, with the power set to 400W; Step 4: Polyester fiber grafting modification: immerse the activated polyester fiber in a 2% chitosan acetic acid solution and react at 38°C for 4 hours; Step 5, functional liquid preparation: disperse the nano silver carrier system, the plant-derived antibacterial deodorant complex, the interfacial compatibilizer and the wear-resistant enhancer in water according to the formula ratio and mix them evenly; Step 6: Fiber mixing: Mix the modified bamboo fiber and the functional polyester fiber in proportion, and use a carding machine to form a web; Step 7: Functionalization treatment: immerse the fiber web in the functional liquid, use ultrasonic wave to assist the immersion, the frequency is 35kHz, and the treatment time is 20 minutes; Step 8: Drying and curing: Drying by microwave-hot air composite drying system; Step 9: Layering: Arrange the dried fiber web in a three-layer structure, and form it through needle punching and hot pressing; Step 10: Surface treatment: After the composite fabric is treated with plasma, an interface strengthener containing a UV curing agent is sprayed on the composite fabric and cured under UV light.

9. The method according to claim 8, characterized in that The needling density in step nine is 60-100 needles / cm2, the hot pressing temperature is 160-190°C, the pressure is 1.0-2.0 MPa, and the time is 2-5 minutes.

10. Use of the composite fabric according to any one of claims 1 to 4 in sportswear or home textiles.

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