Method for improving the hand and strength of home textile fabric

Abstract

This invention relates to the field of home textiles. A method for improving the hand feel and strength of home textile fabrics is disclosed. The method involves using high-count, high-twist yarns for the warp and main weft yarns (high-count, low-twist yarns) and auxiliary weft yarns (bacterial cellulose yarns for the auxiliary weft). In the fabric padding process, modified microspheres, with polystyrene nanospheres as the core and modified with a silane coupling agent to form a silica coating layer, are embedded into the fiber pores of the fabric. After step-by-step temperature curing, a composite reinforcing layer with a three-dimensional network support structure is formed. In the fabric printing process, aerosol jet printing technology is used to spray two-dimensional transition metal carbide ink containing Ti3C2Tx nanosheets onto the fabric surface. The fabric of this invention surpasses existing fabrics in multiple dimensions, achieving optimal overall performance.

Description

Technical Field

[0001] This invention relates to the field of home textiles, specifically to fabrics. Background Technology

[0002] Globally, the home textile industry is undergoing a profound transformation, shifting from basic functional products to high-quality, multi-functional ones. As people's quality of life improves and their health awareness increases, consumers' demands for home textile products are no longer limited to basic warmth and coverage; they are placing greater emphasis on the comfort, durability, and environmental friendliness of the fabrics. This trend is driving the home textile industry to continuously explore new technologies and materials to meet the market's increasingly diversified needs.

[0003] Currently, technological innovations in home textile fabrics in terms of hand feel richness and strength enhancement are mostly focused on improving traditional processes. Research on achieving a leap in comprehensive performance through new materials and technologies is still insufficient, especially systematic exploration in areas such as the integration of flexible materials, nanoscale structural reinforcement, and special functional printing. Summary of the Invention

[0004] The purpose of this invention is to provide a method for improving the hand feel and increasing the strength of home textile fabrics, so as to solve the above-mentioned problems.

[0005] A method for improving the hand feel and strength of home textile fabrics, wherein in the fabric preparation process, the warp yarns are made of high-count, high-twist yarns, and the weft yarns include main weft yarns and auxiliary weft yarns. The main weft yarns are made of high-count, low-twist yarns, and the auxiliary weft yarns are made of bacterial cellulose yarns. The main weft yarns and auxiliary weft yarns are arranged alternately. In the fabric impregnation process, modified microspheres with polystyrene nanospheres as the core and modified with silane coupling agents to form a silica coating layer are embedded into the fiber pores of the fabric and cured by step heating to form a composite reinforcement layer with a three-dimensional network support structure. In the fabric printing process, aerosol jet printing technology is used to spray two-dimensional transition metal carbide ink containing Ti3C2Tx nanosheets onto the fabric surface.

[0006] Preferably, the bacterial cellulose yarn is a pretreated bacterial cellulose yarn: soaked in a weakly acidic solution at 40°C and pH=6.5 for 30 minutes to remove surface impurities and then dried to a moisture content of 6%±1%.

[0007] Preferably, the warp yarn is made of cotton or Lyocell yarn with a fineness of 40-60 English count, a twist of 80-100 twists / 10cm, and a warp strength ≥18cN / tex; The main weft yarn is made of cotton yarn or Lyocell yarn of the same specification as the warp yarn; The auxiliary weft yarn is a bacterial cellulose yarn with a fineness of 30 denier and a breaking strength of ≥2.8cN / dtex, accounting for 0.5%.

[0008] Preferably, the warp density is 120 yarns / inch and the weft density is 90 yarns / inch.

[0009] Preferably, the method for preparing modified microspheres includes the following steps: Step 1, Emulsion polymerization: Mix 10g of PS monomer with 3ml of deionized water and 1ml of ammonia water, add 0.1wt% sodium dodecyl sulfate as a surfactant, stir at 300rpm for 2h at 70℃, and generate PS microspheres with a particle size of 80-120nm through free radical polymerization. Step 2, pH adjustment: Add 0.5g potassium persulfate as an initiator and add 0.2mol / L sodium bicarbonate buffer to stabilize the pH of the system at 7.0-7.5 to obtain PS microsphere suspension; Step 3, Surface modification: The prepared PS microsphere suspension is reacted with 3wt% silane coupling agent at 50℃ for 1h to form a SiO2 coating layer and obtain modified microspheres.

[0010] Preferably, the fabric adopts a one-dip-one-roll process, using a nanosphere suspension, with a roll-off rate of 70%±5%, a rolling pressure of 0.3MPa, and a speed of 15m / min. The preparation method of the nanosphere suspension in the fabric rolling process is as follows: using deionized water as the base liquid, adding 5wt% polyvinylpyrrolidone as a dispersant, placing the modified microspheres in an ultrasonic cleaner, and treating them at a frequency of 40kHz for 30min to break up the microsphere agglomerates, so that the standard deviation of the particle size distribution is ≤5nm, thereby obtaining the nanosphere suspension.

[0011] Preferably, the stepped temperature curing method is as follows: first pre-baking at 80℃ for 3 minutes, and then curing at 120℃ for 2 minutes.

[0012] Preferably, the preparation method of two-dimensional transition metal carbide ink includes the following steps: Step 1: Slowly add 1g of Ti3AlC2 MAX phase powder to a mixed solution containing 1g of LiF and 10ml of 9M HCl, and magnetically stir in a 40℃ water bath for 24h at 300rpm. After etching, centrifuge at 3500rpm for 10min, discard the supernatant, and wash repeatedly with deionized water until pH>6. Disperse the precipitate in deionized water and sonicate under ice bath conditions for 1h to obtain Ti3C2Tx nanosheet suspension. Step 2: Using a mixture of deionized water and ethanol in a 7:3 ratio as the base solvent, add 2 wt% polyvinylpyrrolidone as a dispersant; slowly add the Ti3C2Tx nanosheet suspension to the solvent, supplemented with 0.5 wt% polyurethane as a binder and 0.2 wt% sodium carboxymethyl cellulose as a thickener, and mechanically stir for 2 hours until homogeneous; adjust the ink viscosity to 15-25 cPs using a rotational viscometer, and measure the surface tension to 28-32 mN / m using a fully automatic surface tension meter; Step 3: Place the ink in a 40℃ oven for 72 hours. Observe that there is no layering or precipitation and the absolute value of the Zeta potential is >35mV. Two-dimensional transition metal carbide ink is obtained.

[0013] Preferably, an Optomec AJ-300 aerosol jet printer is used, with a nozzle diameter of 0.1 mm, atomizing air pressure of 0.15 MPa, and carrier air flow rate of 10 L / min. Before printing, the fabric is plasma-treated to improve its surface hydrophilicity. The design pattern is imported into the control software, and the printing resolution is set to 600 dpi with a line width accuracy of ±5 μm. The print head height is adjusted to 1 mm above the fabric surface, and printing is performed at a speed of 10 m / min.

[0014] Preferably, after printing, the fabric is cured in a 150°C hot air drying oven for 2 minutes, followed by a 180°C hot pressing treatment.

[0015] Beneficial effects: This project innovatively combines the flexibility enhancement of bacterial cellulose membranes, the reinforcement of nanoscale microsphere three-dimensional network structure, and MXene material printing technology, which not only significantly improves the hand feel and strength of home textile fabrics, but also endows them with special functionality and aesthetics. Detailed Implementation

[0016] To make the technical means, creative features, objectives, and effects of this invention easier to understand, the following is a detailed description: A method for improving the hand feel and increasing the strength of home textile fabrics includes the preparation of composite flexible fabrics.

[0017] The preparation method of composite flexible fabric is as follows: The warp yarn is made of 40-60 count cotton or lyocell yarn, with a twist controlled at 80-100 twists / 10cm, ensuring a warp strength ≥18cN / tex and a yarn evenness CV value ≤15% as measured by an Uster evenness tester. The main weft yarn is made of the same specification cotton or lyocell yarn as the warp. The auxiliary weft yarn is a 30 denier bacterial cellulose yarn with a breaking strength ≥2.8cN / dtex. The auxiliary weft yarn accounts for 0.5% (mass fraction, the proportion of weft yarn).

[0018] Bacterial cellulose yarn requires pretreatment: Soak in a weakly acidic solution at 40℃ and pH=6.5 for 30 minutes to remove surface impurities, then dry to a moisture content of 6%±1%. The technical effects of pretreatment are as follows: 1. Removes residual bacteria, proteins, polysaccharides, culture medium impurities, and surface floating fibers; 2. Gently regulates pH to avoid damaging bacterial cellulose fibers; 3. Precisely controls moisture content, ensuring stable yarn shape, uniform strength, and consistent subsequent processing. Without pretreatment, the following problems will occur: 1. Impurities increase inter-fiber friction, resulting in a stiff, rigid, and unfriendly feel; 2. Impurities become "stress weaknesses," leading to reduced strength, easy breakage, poor abrasion resistance, and severe pilling; 3. Impurities hinder dye adsorption, resulting in uneven coloring, large color differences, low color fastness (easy fading), and dull colors; printing is prone to bleeding and poor clarity; 4. Residual proteins / polysaccharides are a nutrient source for bacteria, easily leading to mold, strong odor, and poor antibacterial properties, which become more pronounced with long-term storage.

[0019] The machine employs a ZAX-N type air-jet loom equipped with electronic warp feed (ELO) and electronic take-up (ELC) systems to ensure tension control accuracy of ±1%. The warp density is 120 yarns / inch, and the weft density is 90 yarns / inch (including auxiliary weft yarns). The warp yarns are alternately fed into the front and back heald frames at a 1:1 ratio. A dual-nozzle yarn feeding system is used in the weft direction, with the main and auxiliary weft yarns fed alternately. The interval between auxiliary weft yarns is set to 20cm, and the feeding amount is monitored in real time by a photoelectric sensor to ensure a proportional accuracy of 0.5%.

[0020] The warp direction of this invention uses high-count cotton or lyocell yarn, and through high-twist design and strict control of yarn evenness, ensures that the yarn strength meets the requirements of flexible fabrics. The weft direction of this invention introduces a combination of main and auxiliary yarns, with the auxiliary yarn being a special cellulose fiber that has undergone pretreatment with a weakly acidic solution to optimize its surface properties.

[0021] The bacterial cellulose fibers in the weft direction of this invention have a very large specific surface area, and even a small amount of doping can cover the micro-texture of the fabric surface. By using a high-count, low-twist base and a small amount of pretreated bacterial cellulose fiber weft yarn, the composite material flexible fabric obtained by this invention will have a comprehensive improvement in terms of hand feel, smoothness, softness, drape, and surface finish compared to traditional cotton or lyocell fiber fabrics.

[0022] This invention employs an air-jet loom in conjunction with an electronic tension control system to achieve high-density interlacing of warp and weft yarns.

[0023] This invention relates to a 40S*40S fabric: The warp yarn is made of 40S cotton yarn with a twist controlled at 100 twists / 10cm, ensuring a warp strength ≥18cN / tex. The yarn evenness (CV) is ≤15% as measured by an Uster evenness tester. The main weft yarn is 40S lyocell yarn. The auxiliary weft yarn is a bacterial cellulose yarn with a fineness of 30 denier and a breaking strength ≥2.8cN / dtex. The auxiliary weft yarn accounts for 0.5% (mass fraction, the proportion of weft yarn). A ZAX-N type air-jet loom is used, equipped with an electronic warp feed (ELO) and electronic take-up (ELC) system to ensure tension control accuracy ±1%. The warp density is 120 ends / inch, and the weft density is 90 ends / inch (including the auxiliary weft yarn). The warp yarns are alternately threaded into the front and back heald frames at a 1:1 ratio; the weft direction adopts a dual-nozzle yarn feeding system, with the main weft yarn and the auxiliary weft yarn fed alternately. The interval between the auxiliary weft yarns is set to 20cm. The feeding amount is monitored in real time by a photoelectric sensor to ensure a ratio accuracy of 0.5%.

[0024] Comparative example: 40S*40S all-cotton fabric. The warp uses 40S carded cotton yarn with a twist controlled at approximately 90 twists / 10cm, and a warp strength of 15-17 cN / tex. The weft uses the same 40S cotton yarn as the warp, without a differentiated main / auxiliary weft yarn combination structure. Weaving is done on a general-purpose air-jet loom, equipped only with mechanical warp feed and mechanical take-up structures. There is no high-precision electronic warp feed (ELO) and electronic take-up (ELC) closed-loop control system; tension is passively adjusted by the mechanical structure, with a tension control accuracy of ±3% to ±5%, resulting in significant tension fluctuations during weaving. The warp density is 118 yarns / inch, and the weft density is 88 yarns / inch. The warp uses a straight-through healdrying process, employing a unified heald frame for centralized insertion, without a balanced opening structure that alternates between front and rear heald frames in a 1:1 ratio. The weft direction adopts a single-nozzle continuous yarn feeding mode, with a single weft yarn continuously and evenly fed throughout the entire process. There is no dual-nozzle switching yarn feeding structure, no functional auxiliary weft yarn interval feeding design, no fixed-point spacing layout, and no photoelectric sensor configured to monitor the weft yarn feeding amount in real time. It is impossible to achieve precise proportional control of micro-yarn, and the weaving is completed solely by conventional mechanical weft feeding.

[0025] Comparative example: 40S*40S Lyocell fabric. The warp yarn is 40S Lyocell ring-spun yarn, with a weaving twist controlled at 90 twists / 10cm. The standard finished warp strength range is 15.0 cN / tex, and the Uster evenness CV value ranges from 15.5% to 18.0%. The weft yarn uses the same 40S Lyocell yarn as the warp, without distinction between main and auxiliary weft yarns, and without functional profiled yarns or ultrafine yarns added to modify the structure. The weaving equipment is a general-purpose air-jet loom, equipped with a traditional mechanical warp feed and take-up system. Weaving tension is adjusted by mechanical gears and springs, without electronic warp feed (ELO) or electronic take-up (ELC) precision closed-loop control functions. The equipment tension control accuracy is typically ±3% to ±5%. The fabric uses a 2 / 1 twill weave structure, with a warp density of 118 ends / inch and a weft density of 86 ends / inch. The warp yarns are woven using a straight-through heddle process, following a 2 / 1 twill conventional heddle frame sequence, without employing a symmetrical 1:1 alternating balanced heddle structure. The weft yarns use a single-nozzle continuous constant yarn feeding mode, feeding a single weft yarn at a uniform speed throughout the entire process. There is no dual-nozzle switching yarn feeding system, no interval feeding or fixed-point arrangement process, and no photoelectric monitoring or quantitative control equipment. The continuous weft insertion, beat-up, and take-up processes are completed entirely by the inherent mechanical settings of the loom, which is the industry-standard large-scale Lyocell twill fabric weaving process.

[0026] The comparison of test items and results is shown in Table 1 below: Table 1 compares the performance of the fabric of the present invention with that of the prior art. Softness to the touch (out of 10) 8.6 7.2 7.8 This invention produces the softest and most supple material, superior to pure cotton and pure Lyocell. Bending stiffness (mN·cm) 12.5 18.3 15.6 Lowest stiffness, most body-hugging and not rigid Surface dynamic friction coefficient 0.18 0.26 0.21 The smoothest feel, without any cottony or rough texture. Sag coefficient (%) 32.5 41.2 36.8 The best drape, not bulky, more flowing. Water absorption time (s) 1.2 2.8 1.6 Faster moisture absorption, keeps you dry and non-sticky. Warp-wash shrinkage rate (%) 1.8 3.2 2.1 It has the best dimensional stability and is not easily deformed. Weft-direction water washing shrinkage rate (%) 1.2 2.8 1.6 It is not easy to shrink or wrinkle after multiple washes. A method for improving the hand feel and increasing the strength of home textile fabrics also includes the preparation of nanosphere materials and the application of three-dimensional network structures. Details are as follows: Polystyrene (PS) nanospheres were prepared using emulsion polymerization as the core reinforcing material, and surface modification was performed using silica (SiO2). The specific process is as follows: Emulsion polymerization: 10g of PS monomer (molecular weight 50,000) was mixed with 3ml of deionized water and 1ml of ammonia (pH=8.5), and 0.1wt% sodium dodecyl sulfate (SDS) was added as a surfactant. The mixture was stirred at 300rpm for 2h at 70℃ to generate PS microspheres with a particle size of 80-120nm through free radical polymerization.

[0027] pH adjustment: Add 0.5g potassium persulfate (KPS) as an initiator and add 0.2mol / L sodium bicarbonate buffer to stabilize the pH of the system at 7.0-7.5 to avoid microsphere aggregation.

[0028] Surface modification: The prepared PS microsphere suspension was reacted with 3wt% silane coupling agent (KH570) at 50℃ for 1h to form a SiO2 coating layer, which enhances the interfacial bonding force between the microspheres and the fibers.

[0029] Using deionized water as the base liquid, 5 wt% polyvinylpyrrolidone (PVP) was added as a dispersant to ensure uniform dispersion of the microspheres. The modified PS / SiO2 microspheres (20 wt% solid content) were placed in an ultrasonic cleaner and treated at a frequency of 40 kHz for 30 min to break up the microsphere aggregates, so that the standard deviation of the particle size distribution was ≤5 nm, thus preparing a nanosphere suspension.

[0030] A single-dip-roll process was adopted, with the roll residue controlled at 70%±5%, a rolling pressure of 0.3MPa, and a speed of 15m / min to ensure that the microspheres were uniformly embedded in the fiber pores. A stepped heating and drying process was then employed, first pre-drying at 80℃ for 3 minutes, followed by high-temperature curing at 120℃ for 2 minutes. This allowed the SiO2 layer on the microsphere surface to form covalent bonds with the fibers, thereby creating a three-dimensional network support structure within the fiber pores.

[0031] This invention focuses on the preparation of polystyrene nanospheres via emulsion polymerization. The particle size and dispersibility of the microspheres are controlled through a surfactant and buffer system, and a silica coating layer is formed by modification with a silane coupling agent, enhancing the interfacial bonding between the microspheres and fibers. Ultrasonic treatment is used to break up agglomerates, and a dispersant is used to homogenize the microsphere suspension. The microspheres are then embedded into the fiber pores through a padding process, followed by stepped temperature curing to form a composite reinforcing layer with a three-dimensional network support structure. Based on the three-dimensional network structure construction technology of nanospheres, this invention innovatively develops an integrated process of emulsion polymerization, surface modification, and ultrasonic dispersion, overcoming the technical bottlenecks of microsphere agglomeration and uneven dispersion. The silica coating layer formed by silane coupling agent modification, combined with padding-stepped curing technology, achieves covalent bonding between the microspheres and fiber pores, constructing a high-strength three-dimensional support network. This significantly improves the mechanical properties and functional durability of the fabric, providing a new path for the development of flexible composite materials.

[0032] The comparison test items and results are shown in Table 2 below: Table 2 compares the performance of the fabric of the present invention treated with nanospheres with existing fabrics. Meridional fracture strength (cN / tex) 22.6 17.4 19.1 Nanospheres + bacterial cellulose fibers enhance the interfacial bonding, resulting in a significant and powerful boost. latitudinal fracture strength (cN / tex) 20.4 16.7 18.3 The interwoven fibers are more stable and less prone to slippage and breakage under stress. Anti-pilling rating (grade) 4.0 3.0 3.0 Silica-coated microspheres fix the fuzz and inhibit fiber loosening and pilling. Martindale abrasion resistance rating (times) 13100 7750 9550 A wear-resistant protective layer is formed on the surface, which can withstand frictional wear and significantly improve the wear life. This invention is a continuous process, wherein the test object is a 40S * 40S fabric prepared by the preceding preparation method, which is then treated with nanosphere padding, while the control fabric is not treated with nanosphere padding.

[0033] A method for improving the hand feel and strength of home textile fabrics also includes the preparation of MXene printed fabrics.

[0034] The preparation method of MXene printed fabric is as follows: using the LiF / HCl mixed acid etching method, 1g of Ti3AlC2 MAX phase powder is slowly added to a mixed solution containing 1g LiF and 10ml 9M (9mol / L) HCl, and magnetically stirred in a 40℃ water bath for 24h at a speed of 300rpm; after etching, it is centrifuged at 3500rpm for 10min, the supernatant is discarded, and it is repeatedly washed with deionized water until pH>6; the precipitate is dispersed in deionized water and ultrasonically treated under ice bath conditions for 1h (power 400W, pulse 10s / 5s) to obtain a single-layer Ti3C2Tx nanosheet suspension.

[0035] Using a mixture of deionized water and ethanol in a volume ratio of 7:3 as the base solvent, 2 wt% polyvinylpyrrolidone (PVP-K30) was added as a dispersant. The Ti3C2Tx dispersion was slowly added to the solvent, supplemented with 0.5 wt% polyurethane (PU) as a binder and 0.2 wt% sodium carboxymethyl cellulose (CMC) as a thickener, and mechanically stirred for 2 hours until homogeneous. The ink viscosity was adjusted to 15-25 cPs using a rotational viscometer (25℃), and the surface tension was measured to be 28-32 mN / m using a fully automatic surface tension meter. The ink was placed in a 40℃ oven for 72 hours, and no stratification or precipitation was observed. The absolute value of the Zeta potential was >35 mV, thus obtaining a two-dimensional transition metal carbide ink.

[0036] An Optomec AJ-300 aerosol jet printer with a nozzle diameter of 0.1 mm, atomizing pressure of 0.15 MPa, and carrier gas flow rate of 10 L / min was used. Before printing, the fabric was plasma-treated (100 W power, 30 s time) to improve surface hydrophilicity. The design pattern was imported into the control software, and the printing resolution was set to 600 dpi with a line width accuracy of ±5 μm. The print head height was adjusted to 1 mm above the fabric surface, and a single print was performed at a speed of 10 m / min. After printing, the fabric was cured in a 150℃ hot air drying oven for 2 min, followed by hot pressing at 180℃ (0.3 MPa pressure, 30 s time) to ensure a strong bond between the MXene layer and the fibers.

[0037] The invention offers the following unexpected technical benefits: 1. This invention is the first to introduce MXene two-dimensional materials into the textile field using aerosol jet printing technology. MXene nanosheets form a uniform and dense protective film on the fabric surface, covering yarn fibers and filling gaps between them. Combined with the previous PS microsphere modification effect, it further improves abrasion resistance and anti-pilling properties, resulting in a smoother and more durable fabric surface. 2. This invention uses a water-alcohol system rheology-controlled ink + aerosol thin-layer deposition: it does not form a thick film or seal the fabric micropores; it retains the original breathable, moisture-wicking, soft, and smooth feel of the cotton / lyocell + bacterial cellulose fabric, achieving functional upgrades without sacrificing comfort. 3. The two-dimensional nanosheets of this invention form a dense physical shielding layer: effectively blocking ultraviolet rays, significantly improving UPF UV resistance; slowing down fiber photoaging, delaying fabric yellowing and embrittlement, and extending service life. 4. This invention uses aerosol jet printing, which is different from traditional paint printing: the ink particles are evenly dispersed, which can achieve high-precision fine patterns, clear lines, and no smudging; the pattern is thin and uniform, does not clog the fabric pores, does not harden or clump, and retains the original soft and smooth feel of the fabric.

[0038] The comparison test items and results are shown in Table 3 below: Table 3 compares the performance of the present invention with that of the prior art after MXene printing. Softness to the touch (out of 10) 8.4 7.2 7.8 Even after MXene nano-printing, the fabric still feels better than pure cotton and pure Lyocell. Meridional fracture strength (cN / tex) 25.6 17.4 19.1 After MXene nanosheet printing, the strength is further enhanced. latitudinal fracture strength (cN / tex) 22.8 16.7 18.3 The interwoven fibers are more stable and less prone to slippage and breakage under stress. Anti-pilling rating (grade) 4.5 3.0 3.0 MXene printing further fixes the fuzz and prevents the fibers from loosening, tangling, and pilling. Martindale abrasion resistance rating (times) 14400 7750 9550 A wear-resistant protective layer is formed on the surface, which can withstand frictional wear and significantly improve the wear life. This invention is a continuous process. The test object is a 40S * 40S fabric prepared by the previous preparation method, which is then treated with nanosphere padding and MXene printing. The control fabric is not treated with nanosphere padding and MXene printing.

[0039] Note: The softness is rated on a scale of 10, with a higher score indicating a softer feel.

[0040] This invention utilizes acid etching to process MAX phase powder, followed by centrifugal washing and ultrasonic dispersion to obtain single-layer two-dimensional transition metal carbide nanosheets. A water-alcohol system ink containing dispersant, binder, and thickener is formulated, and its rheological properties are adjusted to a stable state. Patterned deposition is achieved using aerosol jet printing technology, combined with plasma pretreatment to enhance the hydrophilicity of the fabric surface. Hot air curing and hot pressing processes strengthen the bond between the MXene layer and the fiber, achieving high-precision pattern preparation. This invention, with MXene two-dimensional material as its core, innovatively develops a water-alcohol system ink formulation and aerosol jet printing technology, overcoming the precision and environmental limitations of traditional printing processes. Through plasma pretreatment and hot pressing curing, a strong bond between the MXene layer and the fiber is achieved, developing home textile printed fabrics that combine aesthetic richness with enhanced strength. This technology is the first to introduce MXene two-dimensional material into the textile field using aerosol jet printing, driving technological upgrades and enhancing the consumer value of home textile fabrics.

[0041] The preparation of composite flexible fabric, the preparation of nanosphere materials and the application of three-dimensional network structure, and the preparation of MXene printed fabric are technologies in different process stages of the fabric preparation process of this invention. They are continuous. When the three are combined, the fabric obtained by this invention surpasses existing fabrics in multiple dimensions and achieves the best comprehensive performance.

[0042] The foregoing has shown and described the basic principles and main features of the present invention, as well as its advantages. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A method for improving the hand feel and increasing the strength of home textile fabrics, characterized in that, In the fabric manufacturing process, the warp yarns are made of high-count, high-twist yarns, and the weft yarns include main weft yarns and auxiliary weft yarns. The main weft yarns are made of high-count, low-twist yarns, and the auxiliary weft yarns are made of bacterial cellulose yarns. The main weft yarns and auxiliary weft yarns are arranged alternately. In the fabric impregnation process, modified microspheres with polystyrene nanospheres as the core and modified with silane coupling agents to form a silica coating layer are embedded into the fiber pores of the fabric and cured by step heating to form a composite reinforcement layer with a three-dimensional network support structure. In the fabric printing process, aerosol jet printing technology is used to spray two-dimensional transition metal carbide ink containing Ti3C2Tx nanosheets onto the fabric surface.

2. The method for improving the hand feel and increasing the strength of home textile fabrics according to claim 1, characterized in that, Bacterial cellulose yarn is pretreated bacterial cellulose yarn: soaked in a weakly acidic solution at 40℃ and pH=6.5 for 30 minutes to remove surface impurities and then dried to a moisture content of 6%±1%.

3. The method for improving the hand feel and increasing the strength of home textile fabrics according to claim 1, characterized in that, The warp yarns are made of cotton or Lyocell yarn with a fineness of 40-60 English count, a twist of 80-100 twists / 10cm, and a warp strength ≥18cN / tex; The main weft yarn is made of cotton yarn or Lyocell yarn of the same specification as the warp yarn; The auxiliary weft yarn is a bacterial cellulose yarn with a fineness of 30 denier and a breaking strength of ≥2.8cN / dtex, accounting for 0.5%.

4. The method for improving the hand feel and increasing the strength of home textile fabrics according to claim 1, characterized in that, The warp density is 120 yarns / inch, and the weft density is 90 yarns / inch.

5. A method for improving the hand feel and increasing the strength of home textile fabrics according to claim 1, characterized in that, The preparation method of modified microspheres includes the following steps: Step 1, Emulsion polymerization: Mix 10g of PS monomer with 3ml of deionized water and 1ml of ammonia water, add 0.1wt% sodium dodecyl sulfate as a surfactant, stir at 300rpm for 2h at 70℃, and generate PS microspheres with a particle size of 80-120nm through free radical polymerization. Step 2, pH adjustment: Add 0.5g potassium persulfate as an initiator and add 0.2mol / L sodium bicarbonate buffer to stabilize the pH of the system at 7.0-7.5 to obtain PS microsphere suspension; Step 3, Surface modification: The prepared PS microsphere suspension is reacted with 3wt% silane coupling agent at 50℃ for 1h to form a SiO2 coating layer and obtain modified microspheres.

6. The method for improving the hand feel and increasing the strength of home textile fabrics according to claim 1, characterized in that, The fabric adopts a one-dip-one-roll process, using a nanosphere suspension, with a roll-off rate of 70%±5%, a rolling pressure of 0.3MPa, and a speed of 15m / min. The preparation method of the nanosphere suspension in the fabric rolling process is as follows: using deionized water as the base liquid, adding 5wt% polyvinylpyrrolidone as a dispersant, placing the modified microspheres in an ultrasonic cleaner, and treating them at a frequency of 40kHz for 30min to break up the microsphere agglomerates, so that the standard deviation of the particle size distribution is ≤5nm, thus obtaining the nanosphere suspension.

7. The method for improving the hand feel and increasing the strength of home textile fabrics according to claim 1, characterized in that, The stepped temperature curing process involves pre-baking at 80℃ for 3 minutes, followed by high-temperature curing at 120℃ for 2 minutes.

8. A method for improving the hand feel and increasing the strength of home textile fabrics according to claim 1, characterized in that, The preparation method of two-dimensional transition metal carbide ink includes the following steps: Step 1: Slowly add 1g of Ti3AlC2 MAX phase powder to a mixed solution containing 1g of LiF and 10ml of 9M HCl, and magnetically stir in a 40℃ water bath for 24h at 300rpm. After etching, centrifuge at 3500rpm for 10min, discard the supernatant, and wash repeatedly with deionized water until pH>6. Disperse the precipitate in deionized water and sonicate under ice bath conditions for 1h to obtain Ti3C2Tx nanosheet suspension. Step 2: Using a mixture of deionized water and ethanol in a 7:3 ratio as the base solvent, add 2 wt% polyvinylpyrrolidone as a dispersant; slowly add the Ti3C2Tx nanosheet suspension to the solvent, supplemented with 0.5 wt% polyurethane as a binder and 0.2 wt% sodium carboxymethyl cellulose as a thickener, and mechanically stir for 2 hours until homogeneous; adjust the ink viscosity to 15-25 cPs using a rotational viscometer, and measure the surface tension to 28-32 mN / m using a fully automatic surface tension meter; Step 3: Place the ink in a 40℃ oven for 72 hours. Observe that there is no layering or precipitation and the absolute value of the Zeta potential is >35mV. Two-dimensional transition metal carbide ink is obtained.

9. A method for improving the hand feel and increasing the strength of home textile fabrics according to claim 1, characterized in that, The Optomec AJ-300 aerosol jet printer was used, with a nozzle diameter of 0.1mm, atomizing gas pressure of 0.15MPa, and carrier gas flow rate of 10L / min. The fabric was plasma-treated before printing to improve its surface hydrophilicity. The design pattern was imported into the control software, and the printing resolution was set to 600dpi with a line width accuracy of ±5μm. Adjust the printhead height to 1mm above the fabric surface and print at a speed of 10m / min.

10. A method for improving the hand feel and increasing the strength of home textile fabrics according to claim 1, characterized in that, After printing, the fabric is cured in a 150℃ hot air drying oven for 2 minutes, followed by a 180℃ hot pressing treatment.