One-way moisture-conducting fabric and preparation method thereof

Abstract

The invention discloses a one-way moisture-conducting fabric and a preparation method thereof, and relates to the technical field of garment fabrics. When the one-way moisture conducting fabric is prepared, firstly, mesoporous nano-silica is pre-modified and then reacts with oleoyl sarcosine, 4-pyridylaldehyde and ethyl isocyanoacetate, silver ions are loaded, and silver-loaded modified mesoporous nano-silica is prepared; the preparation method comprises the following steps: reacting isophorone diisocyanate with polyester diol, reacting with a chain extender, terminating with pentaerythritol triacrylate, and neutralizing with methyl iodide to obtain modified polyurethane; mixing the modified polyurethane, the silver-loaded modified mesoporous nano silicon dioxide, hydrogen-containing silicone oil and chloroplatinic acid to prepare a modified finishing liquid; and padding a fabric in the modified finishing liquid, drying, and carrying out normal-temperature plasma etching to obtain the one-way moisture-conducting fabric. The one-way moisture-conducting fabric prepared by the invention has the advantages of one-way moisture-conducting property, antibacterial property, flame retardance, air permeability, moisture permeability and washing resistance.

Description

Technical Field

[0001] This invention relates to the field of clothing fabric technology, specifically to a unidirectional moisture-wicking fabric and its preparation method. Background Technology

[0002] Mass-market textiles need to upgrade their products by emphasizing uniqueness and differentiation through material innovation and the application of new technologies. The design of comfortable clothing fabrics involves many factors, with visual comfort, tactile comfort, and thermal and moisture comfort being the main influences. High summer temperatures and hot, humid environments have driven continuous innovation in summer functional fabrics, with comfort receiving greater attention. As the body sweats, the sticky feeling produced by clothing often affects the wearing experience, and for athletes, excessive sweat causing fabric to adhere to the body can also affect performance. Therefore, focusing on market demand requires prioritizing the development of unidirectional moisture-wicking comfort fabrics under conditions of visible perspiration, while also improving their durability. Summary of the Invention

[0003] The purpose of this invention is to provide a unidirectional moisture-wicking fabric and its preparation method to solve the problems existing in the prior art.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0005] A one-way moisture-wicking fabric is obtained by padding the fabric in a modified finishing solution, drying it, and then etching it at room temperature using plasma etching.

[0006] The modified finishing liquid is prepared by mixing modified polyurethane, silver-loaded modified mesoporous nano silica, hydrogen-containing silicone oil, chloroplatinic acid, and water.

[0007] The modified polyurethane is prepared by reacting isophorone diisocyanate with polyester diol, then with a chain extender, end-capping with pentaerythritol triacrylate, and neutralizing with iodomethane.

[0008] The silver-loaded modified mesoporous nano silica is prepared by loading silver ions onto modified mesoporous nano silica.

[0009] The modified mesoporous nano silica is prepared by reacting pre-modified mesoporous nano silica with oleoyl sarcosine, 4-pyridine carboxaldehyde, and ethyl isocyanate.

[0010] The pre-modified mesoporous nano silica is prepared by modifying mesoporous nano silica with a silane modification solution;

[0011] The chain extender includes 10-(2,5-dihydroxyphenyl)-10-hydro-9-oxa-10-phosphaphenanthrene-10-oxide, γ-aminoethylaminopropyltrimethoxysilane, and N-methyldiethanolamine.

[0012] As an optimization, the fabric is woven or blended from cotton, polyester, spandex, nylon, or acrylic fibers.

[0013] A method for preparing a one-way moisture-wicking fabric includes the following preparation steps:

[0014] (1) By mass fraction, mix 2-3 parts of mesoporous nano silica and 15-20 parts of anhydrous ethanol evenly, disperse by ultrasonication, add 10-12 parts of silane modification solution and mix evenly, stir and reflux at 60-70℃ for 8-9 hours, centrifuge for 10-12 minutes, wash the precipitate with anhydrous ethanol by centrifugation, and vacuum dry for 8-10 hours to obtain pre-modified mesoporous nano silica;

[0015] (2) By mass fraction, 2-3 parts of pre-modified mesoporous nano silica, 0.64-0.96 parts of oleoyl sarcosine, 0.19-0.29 parts of 4-pyridine carboxaldehyde, 0.2-0.3 parts of ethyl isocyanate, and 40-50 parts of methanol are mixed evenly and stirred at 200-300 r / min for 24-28 h at room temperature in a closed environment. The liquid is removed by centrifugation, washed with anhydrous ethanol by centrifugation, and vacuum dried for 8-10 h to obtain modified mesoporous nano silica.

[0016] (3) By mass fraction, 0.3-0.4 parts of modified mesoporous nano silica, 1-1.2 parts of 0.5 mol / L silver nitrate aqueous solution and 70-80 parts of pure water are mixed evenly, stirred at 300-400 r / min for 12-13 h at room temperature, the liquid is removed by centrifugation, and the mixture is vacuum dried for 8-10 h to obtain silver-loaded modified mesoporous nano silica;

[0017] (4) By mass, under a nitrogen atmosphere, 53.99~80.98 parts of polyester diol, 20~30 parts of isophorone diisocyanate, 0.85~1.28 parts of dibutyltin dilaurate, and 30~40 parts of propylene glycol monomethyl ether acetate are mixed evenly and reacted at 85~90℃ and 300~400 r / min for 1.5~2 h. The temperature is then lowered to 70~75℃, and 4.38~6.56 parts of 10-(2,5-dihydroxyphenyl)-10-hydro-9-oxa-10-phosphaphenanthrene-10-oxide are added. The mixture is then reacted at 70~75℃ and 350~450 r / min for 1.5~2 h. Finally, 2~3 parts of γ-aminoethylaminopropyltrimethylamine are added. Oxysilane was reacted at 55-60℃ and 350-450 r / min for 1.5-2 h, followed by the addition of 1.07-1.61 parts of N-methyldiethanolamine, and the reaction was carried out at 40-45℃ and 350-450 r / min for 60-80 min. Then, 2.68-4.03 parts of pentaerythritol triacrylate and 0.013-0.02 parts of hydroquinone were added, and the reaction was carried out at 45-50℃ and 400-500 r / min for 45-50 min. Finally, 1.28-1.92 parts of iodomethane were added, and the reaction was carried out at 25-30℃ and 300-400 r / min for 50-60 min. Propylene glycol monomethyl ether acetate was removed by vacuum distillation to obtain modified polyurethane.

[0018] (5) By mass, mix 4-5 parts of modified polyurethane, 0.8-0.9 parts of silver-modified mesoporous nano silica, 2-3 parts of hydrogen-containing silicone oil, 0.002-0.003 parts of chloroplatinic acid, and 90-100 parts of pure water evenly, and stir at 1500-2000 r / min for 50-60 min at room temperature to obtain the modified finishing solution;

[0019] (6) The fabric is immersed in the modified finishing solution at a bath ratio of 1:(30~40)g / L for 20~22min, the stirring rate is 30~50r / min, one dip and one roll, the roll-off rate is 80%~90%, and the fabric is dried and cured at 80~90℃ for 100~120min. The fabric is shielded with a porous stainless steel panel with a hole diameter of 1.5mm and a hole spacing of 7mm. The fabric is then subjected to atmospheric pressure plasma etching with an etching distance of 35~40mm, an etching time of 130~140s, a power of 150W, and an argon-oxygen mixed gas with a volume ratio of 4:1 to obtain a one-way moisture-wicking fabric.

[0020] As an optimization, the silane-modified solution in step (1) is prepared by mixing 0.4 to 0.6 parts of 3-aminopropyltriethoxysilane, 1 to 1.1 parts of pure water, and 10 to 11 parts of anhydrous ethanol evenly by mass, and stirring at 200 to 300 r / min for 40 to 50 min at room temperature.

[0021] As an optimization, the particle size of the mesoporous nano silica in step (1) is 200~300nm.

[0022] As an optimization, the reaction process of the pre-modified mesoporous nano silica in step (1) is as follows:

[0023] .

[0024] As an optimization, the reaction process of the modified mesoporous nano silica in step (2) is as follows:

[0025] .

[0026] As an optimization, the weight-average molecular weight of the polyester diol in step (4) is 1000.

[0027] As an optimization, the hydrogen content of the hydrogen-containing silicone oil in step (5) is 1 wt%.

[0028] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0029] In preparing a one-way moisture-wicking fabric, this invention first pre-modifies mesoporous nano-silica, then reacts it with oleoylsarcosine, 4-pyridinecarboxaldehyde, and ethyl isocyanate to load silver ions and obtain silver-loaded modified mesoporous nano-silica; isophorone diisocyanate is reacted with polyester diol, then with a chain extender, capped with pentaerythritol triacrylate, and neutralized with iodomethane to obtain modified polyurethane; the modified polyurethane, silver-loaded modified mesoporous nano-silica, hydrogen-containing silicone oil, and chloroplatinic acid are mixed to prepare a modification finishing solution; the fabric is impregnated in the modification finishing solution, dried, and then subjected to room temperature plasma etching to obtain the one-way moisture-wicking fabric.

[0030] First, mesoporous nano-silica is pre-modified with an aminosilane coupling agent to introduce amino groups onto the mesoporous nano-silica and reduce the number of hydroxyl groups on the surface of the mesoporous nano-silica, thereby reducing the risk of aggregation. Subsequently, oleoylsarcosine, 4-pyridinecarboxaldehyde, and ethyl isocyanate are added to carry out a Ugi multi-component reaction, thereby introducing pyridine groups, long carbon chains, and double bonds onto the mesoporous nano-silica. The long carbon chains can provide good hydrophobic effects, so that the modified mesoporous nano-silica can provide good hydrophobic effects after being finished on the fabric surface. The double bonds are used for subsequent linkage reactions. The pyridine groups have strong complexing ability, which can effectively improve the loading strength and loading amount of silver ions when loading silver ions, reduce the dissolution of silver ions, and enable it to have good antibacterial properties even after multiple washes.

[0031] Secondly, isophorone diisocyanate was reacted with polyester diol, 10-(2,5-dihydroxyphenyl)-10-hydro-9-oxa-10-phosphaphenanthrene-10-oxide, γ-aminoethylaminopropyltrimethoxysilane, N-methyldiethanolamine, pentaerythritol triacrylate, and iodomethane to prepare modified polyurethane. Among these, the polyester diol exhibits better hydrophobicity than the polyether diol, providing greater hydrophobicity and improving hydrophobic properties. 10-(2,5-dihydroxyphenyl)-10-hydro-9-oxa-10-phosphaphenanthrene-10-oxide, a chain extender containing the flame-retardant DOPO structure, effectively enhances the flame-retardant effect when introduced into the polyurethane chain. γ-aminoethylaminopropyltrimethoxysilane contains one primary amine group and one secondary amine group. In the chain extension reaction of polyurethane segments, it is added as a chain extender. At the same time, the siloxane bonds on it can be hydrolyzed during subsequent finishing. On the one hand, it can react with the hydroxyl groups on the fabric, thereby improving the firmness of the finishing layer and the adhesion to the fabric. N-methyldiethanolamine, as a chain extender, contains tertiary amine groups in addition to two hydroxyl groups, which can form a quaternary ammonium cationic structure. Some fabrics woven from cellulose fibers or cotton fibers are negatively charged. Cationic polyurethane can be well emulsified in the finishing solution and bonded to the fabric by electrostatic bonding, which can effectively improve the firmness of the finishing coating and improve the wash resistance. Finally, pentaerythritol triacrylate is used for end capping to introduce double bond groups for subsequent reactions. Iodomethane forms a quaternary ammonium cationic structure with the tertiary amine structure through a quaternization reaction.

[0032] Finally, a modified finishing solution is prepared by mixing modified polyurethane, silver-modified mesoporous nano-silica, hydrogen-containing silicone oil, and chloroplatinic acid. The fabric is then impregnated in the modified finishing solution, dried, and subjected to room temperature plasma etching to obtain a one-way moisture-wicking fabric. Both the modified polyurethane and the silver-modified mesoporous nano-silica contain double-bonded reactive groups, which can crosslink together through free radical reactions or through hydrosilylation reactions with the hydrogen-containing silicone oil. This effectively improves the adhesion of the finishing coating, thereby improving its wash resistance. Simultaneously, the siloxane bonds introduced into the modified polyurethane segments also undergo hydrolysis and crosslinking during the impregnation process. This self-crosslinking enhances the strength of the polyurethane itself and allows it to interact with the fabric and the silver-modified mesoporous nano-silica. The hydroxyl groups on the nano-silica undergo a dehydration condensation reaction, thus connecting them together through covalent bonds. This effectively improves the finishing strength of the silver-modified mesoporous nano-silica, ensuring both hydrophobic and antibacterial effects. Even after multiple washes, it retains good hydrophobicity and antibacterial properties. After padding, the finishing layer on one side of the fabric is etched using a room-temperature plasma etching method. This reduces the hydrophobic effect on the etched surface and creates different hydrophilic and hydrophobic effects on both sides of the fabric, resulting in a good wetting gradient and excellent unidirectional moisture-wicking properties. Since the hydrophobic effect is obtained through padding, it does not affect the fabric's breathability and still maintains good air and moisture permeability. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0034] The following information is about the raw materials used in the examples and comparative examples:

[0035] Mesoporous nano silica: particle size 200~300nm, product number 104015, serial number XFF43, purchased from Jiangsu Xianfeng Nanomaterials Technology Co., Ltd.

[0036] Silane modified solution: 0.5 parts by mass of 3-aminopropyltriethoxysilane, 1.05 parts of pure water and 10.5 parts of anhydrous ethanol are mixed evenly and stirred at 250 r / min for 45 min at room temperature.

[0037] Polyester diol: weight average molecular weight of 1000, model CAPA 2100A, purchased from Guangzhou Haoyi New Material Technology Co., Ltd.

[0038] Hydrogen-containing silicone oil: Model number The hydrogen content is 1 wt%, purchased from Jiangsu Keqi Polymer Materials Research Institute Co., Ltd.

[0039] Fabric: Pure cotton fabric, specifications are , 160GSM.

[0040] Example 1:

[0041] A method for preparing a one-way moisture-wicking fabric, the method comprising the following preparation steps:

[0042] (1) By mass fraction, 2 parts of mesoporous nano silica and 15 parts of anhydrous ethanol were mixed evenly, ultrasonically dispersed, 10 parts of silane-modified solution were added and mixed evenly, and the mixture was stirred and refluxed at 60°C for 9 hours. After centrifugation for 10 minutes, the precipitate was washed with anhydrous ethanol by centrifugation and vacuum dried for 8 hours to obtain pre-modified mesoporous nano silica.

[0043] (2) By mass fraction, 2 parts of pre-modified mesoporous nano silica, 0.64 parts of oleoyl sarcosine, 0.19 parts of 4-pyridine carboxaldehyde, 0.2 parts of ethyl isocyanate and 40 parts of methanol were mixed evenly, stirred at 200 r / min for 24 h at room temperature in a closed environment, the liquid was removed by centrifugation, washed with anhydrous ethanol by centrifugation, and vacuum dried for 8 h to obtain modified mesoporous nano silica;

[0044] (3) According to the mass fraction, 0.3 parts of modified mesoporous nano silica, 1 part of 0.5 mol / L silver nitrate aqueous solution and 70 parts of pure water are mixed evenly, stirred at 300 r / min for 13 h at room temperature, the liquid is removed by centrifugation, and vacuum dried for 8 h to obtain silver-loaded modified mesoporous nano silica.

[0045] (4) By mass, under a nitrogen atmosphere, 53.99 parts of polyester diol, 20 parts of isophorone diisocyanate, 0.85 parts of dibutyltin dilaurate, and 30 parts of propylene glycol monomethyl ether acetate were mixed evenly and reacted at 85°C and 300 r / min for 2 h. The mixture was then cooled to 70°C, and 4.38 parts of... The reaction was carried out at 70℃ and 350 r / min for 2 h, then 2 parts of γ-aminoethylaminopropyltrimethoxysilane were added, and the reaction was carried out at 55℃ and 350 r / min for 2 h. Then 1.07 parts of N-methyldiethanolamine were added, and the reaction was carried out at 40℃ and 350 r / min for 80 min. Then 2.68 parts of pentaerythritol triacrylate and 0.013 parts of hydroquinone were added, and the reaction was carried out at 45℃ and 400 r / min for 50 min. Then 1.28 parts of iodomethane were added, and the reaction was carried out at 25℃ and 300 r / min for 60 min. Propylene glycol monomethyl ether acetate was removed by vacuum distillation to obtain the modified polyurethane.

[0046] (5) By mass, 4 parts of modified polyurethane, 0.8 parts of silver-modified mesoporous nano silica, 2 parts of hydrogen-containing silicone oil, 0.002 parts of chloroplatinic acid and 90 parts of pure water are mixed evenly and stirred at 1500 r / min for 60 min at room temperature to obtain the modified finishing solution.

[0047] (6) The fabric was immersed in the modified finishing solution at a bath ratio of 1:30 g / L for 20 min, the stirring rate was 30 r / min, one dip and one roll, the roll-off rate was 80%, and the fabric was dried and cured at 80℃ for 120 min. The fabric was shielded with a porous stainless steel panel with a hole diameter of 1.5 mm and a hole spacing of 7 mm. The etching distance was 35 mm, the etching time was 130 s, the power was 150 W, and the gas was an argon-oxygen mixture with a volume ratio of 4:1. Normal pressure plasma etching was performed to obtain a one-way moisture-wicking fabric.

[0048] Example 2:

[0049] A method for preparing a one-way moisture-wicking fabric, the method comprising the following preparation steps:

[0050] (1) By mass fraction, 2.5 parts of mesoporous nano silica and 18 parts of anhydrous ethanol were mixed evenly, ultrasonically dispersed, and 11 parts of silane modification solution were added and mixed evenly. The mixture was stirred and refluxed at 65°C for 8.5 h, centrifuged for 11 min, the precipitate was washed with anhydrous ethanol by centrifugation, and vacuum dried for 9 h to obtain pre-modified mesoporous nano silica.

[0051] (2) By mass fraction, 2.5 parts of pre-modified mesoporous nano silica, 0.8 parts of oleoyl sarcosine, 0.24 parts of 4-pyridine carboxaldehyde, 0.25 parts of ethyl isocyanate and 45 parts of methanol were mixed evenly, stirred at 250 r / min for 26 h at room temperature in a closed environment, the liquid was removed by centrifugation, washed with anhydrous ethanol by centrifugation, and vacuum dried for 9 h to obtain modified mesoporous nano silica;

[0052] (3) According to the mass fraction, 0.35 parts of modified mesoporous nano silica, 1.1 parts of 0.5 mol / L silver nitrate aqueous solution and 75 parts of pure water are mixed evenly, stirred at 350 r / min for 12.5 h at room temperature, the liquid is removed by centrifugation, and the mixture is vacuum dried for 9 h to obtain silver-loaded modified mesoporous nano silica.

[0053] (4) By mass, under a nitrogen atmosphere, 67.48 parts of polyester diol, 25 parts of isophorone diisocyanate, 1.07 parts of dibutyltin dilaurate, and 35 parts of propylene glycol monomethyl ether acetate were mixed evenly and reacted at 85°C and 350 r / min for 1.8 h. The mixture was then cooled to 70°C, and 5.47 parts of 10-(2,5-dihydroxyphenyl)-10-hydro-9-oxa-10-phosphaphenanthrene-10-oxide were added. The mixture was then reacted at 70°C and 400 r / min for 1.8 h. Finally, 2.5 parts of γ- The modified polyurethane was prepared by reacting 1.34 parts of N-methyldiethanolamine at 55℃ and 400 r / min for 1.8 h, then reacting at 40℃ and 400 r / min for 70 min, followed by the addition of 3.35 parts of pentaerythritol triacrylate and 0.017 parts of hydroquinone at 45℃ and 450 r / min for 48 min, then the addition of 1.6 parts of iodomethane at 25℃ and 350 r / min for 55 min, and finally removing propylene glycol monomethyl ether acetate by vacuum distillation.

[0054] (5) By mass, 4.5 parts of modified polyurethane, 0.85 parts of silver-modified mesoporous nano silica, 2.5 parts of hydrogen-containing silicone oil, 0.0025 parts of chloroplatinic acid and 95 parts of pure water are mixed evenly and stirred at 1800 r / min for 55 min at room temperature to obtain the modified finishing solution.

[0055] (6) The fabric was immersed in the modified finishing solution at a bath ratio of 1:35 g / L for 21 min, the stirring rate was 40 r / min, one dip and one roll, the roll-off rate was 85%, and it was dried and cured at 85℃ for 110 min. A porous stainless steel panel with a hole diameter of 1.5 mm and a hole spacing of 7 mm was used for shielding. At atmospheric pressure plasma etching was performed with an etching distance of 38 mm, an etching time of 135 s, a power of 150 W, and an argon-oxygen mixed gas with a volume ratio of 4:1 to obtain a one-way moisture-wicking fabric.

[0056] Example 3:

[0057] A method for preparing a one-way moisture-wicking fabric, the method comprising the following preparation steps:

[0058] (1) By mass fraction, 3 parts of mesoporous nano silica and 20 parts of anhydrous ethanol were mixed evenly, ultrasonically dispersed, 12 parts of silane-modified solution were added and mixed evenly, and the mixture was stirred and refluxed at 70°C for 8 hours. After centrifugation for 12 minutes, the precipitate was washed with anhydrous ethanol by centrifugation and vacuum dried for 10 hours to obtain pre-modified mesoporous nano silica.

[0059] (2) By mass fraction, 3 parts of pre-modified mesoporous nano silica, 0.96 parts of oleoyl sarcosine, 0.29 parts of 4-pyridine carboxaldehyde, 0.3 parts of ethyl isocyanate and 50 parts of methanol were mixed evenly, stirred at 300 r / min for 28 h at room temperature in a closed environment, the liquid was removed by centrifugation, washed with anhydrous ethanol by centrifugation, and vacuum dried for 10 h to obtain modified mesoporous nano silica;

[0060] (3) According to the mass fraction, 0.4 parts of modified mesoporous nano silica, 1.2 parts of 0.5 mol / L silver nitrate aqueous solution and 80 parts of pure water are mixed evenly, stirred at 400 r / min for 12 h at room temperature, the liquid is removed by centrifugation, and vacuum dried for 10 h to obtain silver-loaded modified mesoporous nano silica.

[0061] (4) By mass, under a nitrogen atmosphere, 80.98 parts of polyester diol, 30 parts of isophorone diisocyanate, 1.28 parts of dibutyltin dilaurate, and 40 parts of propylene glycol monomethyl ether acetate were mixed evenly and reacted at 90°C and 400 r / min for 1.5 h. The mixture was then cooled to 75°C, and 6.56 parts of 10-(2,5-dihydroxyphenyl)-10-hydro-9-oxa-10-phosphaphenanthrene-10-oxide were added. The mixture was reacted at 75°C and 450 r / min for 1.5 h. Then, 3 parts of γ- Aminoethylaminopropyltrimethoxysilane was reacted at 60℃ and 450 r / min for 1.5 h, followed by the addition of 1.61 parts of N-methyldiethanolamine and the reaction at 45℃ and 450 r / min for 60 min. Then, 4.03 parts of pentaerythritol triacrylate and 0.02 parts of hydroquinone were added, and the reaction was carried out at 50℃ and 500 r / min for 45 min. Finally, 1.92 parts of iodomethane were added, and the reaction was carried out at 30℃ and 400 r / min for 50 min. Propylene glycol monomethyl ether acetate was removed by vacuum distillation to obtain the modified polyurethane.

[0062] (5) By mass, 5 parts of modified polyurethane, 0.9 parts of silver-modified mesoporous nano silica, 3 parts of hydrogen-containing silicone oil, 0.003 parts of chloroplatinic acid and 100 parts of pure water are mixed evenly and stirred at 2000 r / min for 50 min at room temperature to obtain the modified finishing solution.

[0063] (6) The fabric was immersed in the modified finishing solution at a bath ratio of 1:40 g / L for 22 min, the stirring rate was 50 r / min, one dip and one roll, the roll-off rate was 90%, and the fabric was dried and cured at 90℃ for 100 min. The fabric was shielded with a porous stainless steel panel with a hole diameter of 1.5 mm and a hole spacing of 7 mm. The etching distance was 40 mm, the etching time was 140 s, the power was 150 W, and the gas was an argon-oxygen mixture with a volume ratio of 4:1. Normal pressure plasma etching was performed to obtain a one-way moisture-wicking fabric.

[0064] Comparative Example 1:

[0065] The difference between the preparation method of the unidirectional moisture-wicking fabric in Comparative Example 1 and Example 2 lies in step (6), where "etching distance of 38 mm" in step (6) is replaced with "etching distance of 20 mm". The remaining steps are the same as in Example 2.

[0066] Comparative Example 2:

[0067] The difference between the preparation method of the unidirectional moisture-wicking fabric in Comparative Example 2 and Example 2 lies in step (6), where "etching distance is 38 mm" is replaced with "etching distance is 30 mm". The remaining steps are the same as in Example 2.

[0068] Comparative Example 3:

[0069] The difference between the preparation method of the unidirectional moisture-wicking fabric in Comparative Example 3 and Example 2 lies in step (6), where "etching distance of 38 mm" in step (6) is replaced with "etching distance of 50 mm". The remaining steps are the same as in Example 2.

[0070] Comparative Example 4:

[0071] The difference between the preparation method of the unidirectional moisture-wicking fabric in Comparative Example 4 and Example 2 lies in step (6), where "etching distance of 38 mm" in step (6) is replaced with "etching distance of 60 mm". The remaining steps are the same as in Example 2.

[0072] Comparative Example 5:

[0073] The difference between the preparation method of the unidirectional moisture-wicking fabric in Comparative Example 5 and Example 2 lies in step (6), where "pore size is 1.5 mm" is replaced with "pore size is 0.5 mm". The remaining steps are the same as in Example 2.

[0074] Comparative Example 6:

[0075] The difference between the preparation method of the unidirectional moisture-wicking fabric in Comparative Example 6 and Example 2 lies in step (6), where "pore size is 1.5 mm" is replaced with "pore size is 1 mm". The remaining steps are the same as in Example 2.

[0076] Comparative Example 7:

[0077] The difference between the preparation method of the unidirectional moisture-wicking fabric in Comparative Example 7 and Example 2 lies in step (6), where "pore size is 1.5 mm" is replaced with "pore size is 2 mm". The remaining steps are the same as in Example 2.

[0078] Comparative Example 8:

[0079] The difference between the preparation method of the unidirectional moisture-wicking fabric in Comparative Example 8 and Example 2 lies in step (6), where "pore size is 1.5 mm" is replaced with "pore size is 2.5 mm". The remaining steps are the same as in Example 2.

[0080] Comparative Example 9:

[0081] The difference between the preparation method of the unidirectional moisture-wicking fabric in Comparative Example 9 and Example 2 lies in step (6), where "immersion for 21 min" in step (6) is replaced with "immersion for 7 min". The remaining steps are the same as in Example 2.

[0082] Comparative Example 10:

[0083] The preparation method of the unidirectional moisture-wicking fabric in Comparative Example 10 differs from that in Example 2 in step (6), where "immersion for 21 min" is replaced with "immersion for 14 min". The remaining steps are the same as in Example 2.

[0084] Comparative Example 11:

[0085] The difference between the preparation method of the unidirectional moisture-wicking fabric in Comparative Example 11 and Example 2 lies in step (6), where "immersion for 21 min" in step (6) is replaced with "immersion for 28 min". The remaining steps are the same as in Example 2.

[0086] Comparative Example 12:

[0087] The preparation method of the unidirectional moisture-wicking fabric in Comparative Example 12 differs from that in Example 2 in step (6), where "immersion for 21 min" is replaced with "immersion for 35 min". The remaining steps are the same as in Example 2.

[0088] Comparative Example 13:

[0089] The preparation method of the unidirectional moisture-wicking fabric in Comparative Example 13 differs from that in Example 2 in that step (1) is omitted, and step (2) is replaced by: mixing 2.5 parts by mass of mesoporous nano-silica, 0.8 parts by mass of oleoylsarcosine, 0.24 parts by mass of 4-pyridinecarboxaldehyde, 0.25 parts by mass of ethyl isocyanate, and 45 parts by mass of methanol, stirring at 250 r / min for 26 h at room temperature in a sealed environment, centrifuging to remove the liquid, washing with anhydrous ethanol by centrifugation, and vacuum drying for 9 h to obtain modified mesoporous nano-silica. The remaining steps are the same as in Example 2.

[0090] Comparative Example 14:

[0091] The difference between the preparation method of the unidirectional moisture-wicking fabric in Comparative Example 14 and Example 2 lies in step (2). Step (2) is replaced by: mixing 2.5 parts by mass of pre-modified mesoporous nano-silica, 0.14 parts by mass of acetic acid, 0.24 parts by mass of 4-pyridinecarboxaldehyde, 0.25 parts by mass of ethyl isocyanate, and 45 parts by mass of methanol. The mixture is stirred at 250 r / min for 26 h at room temperature in a sealed environment. The liquid is removed by centrifugation, and the mixture is washed with anhydrous ethanol by centrifugation and vacuum dried for 9 h to obtain modified mesoporous nano-silica. The remaining steps are the same as in Example 2.

[0092] Comparative Example 15:

[0093] The preparation method of the unidirectional moisture-wicking fabric in Comparative Example 15 differs from that in Example 2 in step (2). Step (2) is replaced by: mixing 2.5 parts by mass of pre-modified mesoporous nano-silica, 0.8 parts by mass of oleoylsarcosine, 0.13 parts by mass of propionaldehyde, 0.25 parts by mass of ethyl isocyanate, and 45 parts by mass of methanol. The mixture is stirred at 250 r / min for 26 h at room temperature in a sealed environment. The liquid is removed by centrifugation, and the mixture is washed with anhydrous ethanol by centrifugation and vacuum dried for 9 h to obtain modified mesoporous nano-silica. The remaining steps are the same as in Example 2.

[0094] Comparative Example 16:

[0095] The preparation method of the unidirectional moisture-wicking fabric in Comparative Example 16 differs from that in Example 2 in that step (2) is omitted, and step (3) is replaced by: mixing 0.35 parts by mass of pre-modified mesoporous nano-silica, 1.1 parts by mass of 0.5 mol / L silver nitrate aqueous solution, and 75 parts by mass of pure water, stirring at 350 r / min for 12.5 h at room temperature, centrifuging to remove the liquid, and vacuum drying for 9 h to obtain silver-loaded modified mesoporous nano-silica. The remaining steps are the same as in Example 2.

[0096] Comparative Example 17:

[0097] The preparation method of the unidirectional moisture-wicking fabric in Comparative Example 17 differs from that in Example 2 in that step (3) is omitted, and step (5) is replaced by: mixing 4.5 parts of modified polyurethane, 0.85 parts of modified mesoporous nano silica, 2.5 parts of hydrogen-containing silicone oil, 0.0025 parts of chloroplatinic acid, and 95 parts of pure water by mass, and stirring at 1800 r / min for 55 min at room temperature to obtain the modified finishing solution. The remaining steps are the same as in Example 2.

[0098] Comparative Example 18:

[0099] The difference between the preparation method of the unidirectional moisture-wicking fabric in Comparative Example 18 and Example 2 lies in step (4). Step (4) is replaced by: mixing 67.48 parts by mass of polyester diol, 25 parts by isophorone diisocyanate, 1.07 parts by dibutyltin dilaurate, and 35 parts by mass of propylene glycol monomethyl ether acetate under a nitrogen atmosphere, reacting at 85°C and 350 r / min for 1.8 h, cooling to 70°C, and adding 2.5 parts by mass of γ-aminoethylaminopropyltrimethoxysilane. Alkane was reacted at 55°C and 400 rpm for 1.8 h. Then, 3.35 parts of N-methyldiethanolamine were added, and the reaction was carried out at 40°C and 400 rpm for 70 min. Next, 3.35 parts of pentaerythritol triacrylate and 0.017 parts of hydroquinone were added, and the reaction was carried out at 45°C and 450 rpm for 48 min. Finally, 1.6 parts of iodomethane were added, and the reaction was carried out at 25°C and 350 rpm for 55 min. Propylene glycol monomethyl ether acetate was removed by vacuum distillation to obtain the modified polyurethane. The remaining steps were the same as in Example 2.

[0100] Comparative Example 19:

[0101] The difference between the preparation method of the unidirectional moisture-wicking fabric in Comparative Example 19 and Example 2 lies in step (4). Step (4) is replaced by: 67.48 parts by mass of polyester diol, 25 parts by isophorone diisocyanate, 1.07 parts by dibutyltin dilaurate, and 35 parts by propylene glycol monomethyl ether acetate are mixed evenly under a nitrogen atmosphere, reacted at 85°C and 350 r / min for 1.8 h, cooled to 70°C, and 5.47 parts by 10-(2,5-dihydroxyphenyl)-10-hydro-9-oxa -10-phosphaphenanthrene-10-oxide was reacted at 70°C and 400 rpm for 1.8 h. Then, 2.68 parts of N-methyldiethanolamine were added, and the reaction was carried out at 40°C and 400 rpm for 70 min. Next, 3.35 parts of pentaerythritol triacrylate and 0.017 parts of hydroquinone were added, and the reaction was carried out at 45°C and 450 rpm for 48 min. Finally, 1.6 parts of iodomethane were added, and the reaction was carried out at 25°C and 350 rpm for 55 min. Propylene glycol monomethyl ether acetate was removed by vacuum distillation to obtain the modified polyurethane. The remaining steps were the same as in Example 2.

[0102] Comparative Example 20:

[0103] The difference between the preparation method of the unidirectional moisture-wicking fabric in Comparative Example 20 and Example 2 lies in step (4). Step (4) is replaced by: 67.48 parts by mass of polyester diol, 25 parts by isophorone diisocyanate, 1.07 parts by dibutyltin dilaurate, and 35 parts by propylene glycol monomethyl ether acetate are mixed evenly under a nitrogen atmosphere, reacted at 85°C and 350 r / min for 1.8 h, cooled to 70°C, and 5.47 parts by 10-(2,5-dihydroxyphenyl)-10-hydro-9-oxa-10-phosphaphenanthrene-10-oxide are added, and reacted at 7... The reaction was carried out at 0°C and 400 rpm for 1.8 h. Then, 2.5 parts of γ-aminoethylaminopropyltrimethoxysilane were added, and the reaction was carried out at 55°C and 400 rpm for 1.8 h. Next, 1.34 parts of N-methyldiethanolamine were added, and the reaction was carried out at 40°C and 400 rpm for 70 min. Then, 0.52 parts of ethanol and 0.017 parts of hydroquinone were added, and the reaction was carried out at 45°C and 450 rpm for 48 min. Finally, 1.6 parts of iodomethane were added, and the reaction was carried out at 25°C and 350 rpm for 55 min. Propylene glycol monomethyl ether acetate was removed by vacuum distillation to obtain the modified polyurethane. The remaining steps were the same as in Example 2.

[0104] Comparative Example 21:

[0105] The preparation method of the unidirectional moisture-wicking fabric in Comparative Example 21 differs from that in Example 2 in that step (4) is omitted, and step (5) is replaced by: mixing 0.85 parts by weight of silver-modified mesoporous nano-silica, 2.5 parts by weight of hydrogen-containing silicone oil, 0.0025 parts by weight of chloroplatinic acid, and 95 parts by weight of pure water, and stirring at 1800 r / min for 55 min at room temperature to obtain a modified finishing solution. The remaining steps are the same as in Example 2.

[0106] Comparative Example 22:

[0107] The preparation method of the unidirectional moisture-wicking fabric in Comparative Example 22 differs from that in Example 2 in that steps (1), (2), and (3) are omitted, and step (5) is replaced by: mixing 4.5 parts of modified polyurethane, 2.5 parts of hydrogen-containing silicone oil, 0.0025 parts of chloroplatinic acid, and 95 parts of pure water by weight, stirring at 1800 r / min for 55 min at room temperature to obtain the modified finishing solution. The remaining steps are the same as in Example 2.

[0108] Comparative Example 23:

[0109] The difference between the preparation method of the unidirectional moisture-wicking fabric in Comparative Example 23 and Example 2 lies in step (5). Step (5) is replaced by: mixing 4.5 parts of modified polyurethane, 0.85 parts of silver-loaded modified mesoporous nano silica, and 95 parts of pure water by mass, stirring at 1800 r / min for 55 min at room temperature to obtain the modified finishing solution. The remaining steps are the same as in Example 2.

[0110] Comparative Example 24:

[0111] The difference between the preparation method of the one-way moisture-wicking fabric in Comparative Example 24 and Example 2 lies in step (6). Step (6) is replaced by: immersing the fabric in the modified finishing solution at a bath ratio of 1:35 g / L for 21 min, stirring at a rate of 40 r / min, performing one dip and one roll, with a roll-off rate of 85%, and drying and curing at 85°C for 110 min to obtain the one-way moisture-wicking fabric. The remaining steps are the same as in Example 2.

[0112] In all the test cases below, the side undergoing plasma etching is referred to as the hydrophilic side, and the other side as the hydrophobic side.

[0113] Test Example 1:

[0114] Optimal conditions were determined by varying the plasma etching distance, the diameter of the porous stainless steel panel holes, and the immersion time. The optimal reaction conditions were evaluated by testing the immersion time and the water contact angle on both sides.

[0115] Wetting time: The test was conducted according to the test of wetting time in GB / T 21655.2-2019. The prepared one-way moisture-wicking fabric was tested. The sample size was 10mm×10cm. The hydrophobic surface was used as the dripping surface. Each group was tested in parallel for 5 times, and the average value was recorded.

[0116] The results are shown in Table 1.

[0117] Table 1

[0118]

[0119] A comparison of the experimental data of Example 2 and Comparative Examples 1-12 in Table 1 reveals that the optimal reaction conditions for the unidirectional moisture-wicking fabric prepared by the present invention are an etching distance of 35-40 mm, a pore size of 1.5 mm in the porous stainless steel panel, and an immersion time of 20-22 min, which result in better moisture-wicking performance and a shorter immersion time.

[0120] Comparing the data in the table, Comparative Examples 1-4 show that reducing the etching distance leads to excessively high temperatures, accelerating the aging of the fabric surface coating and reducing its moisture-wicking performance. Conversely, increasing the etching distance reduces the degree of etching on the fabric surface coating, limiting the damage to the hydrophobic coating and decreasing the wetting gradient, thus reducing moisture-wicking performance. Comparative Examples 5-8 show that when the porous stainless steel panel has small apertures, the plasma's effective range is also small, limiting the damage to the hydrophobic coating on the fabric surface and reducing moisture-wicking performance. However, when the aperture is enlarged, the excessive area etched by the plasma leads to increased temperatures, causing fabric surface aging and reducing moisture-wicking performance. Comparative Examples 9-12 show that when the immersion time is short, the fabric surface coating is thin, and excessive etching leads to increased temperatures, causing the fabric coating to age and reducing moisture-wicking performance. Conversely, excessively long immersion times result in an excessively thick fabric surface coating, making complete etching difficult and failing to achieve a suitable wetting gradient, thus reducing moisture-wicking performance.

[0121] Test Example 2:

[0122] One-way moisture wicking and breathability test: The one-way transfer index, air permeability, and moisture permeability of the prepared one-way moisture wicking fabric are tested to evaluate its one-way moisture wicking and breathability performance. The specific test method is as follows:

[0123] Unidirectional transfer index: The unidirectional transfer index of the prepared unidirectional moisture-wicking fabric was tested according to GB / T 21655.2-2019. The sample size was 10mm×10cm. The hydrophobic surface was used as the dripping surface. Each group was tested in parallel 5 times, and the average value was recorded.

[0124] Air permeability: The air permeability of the prepared unidirectional moisture-wicking fabric was tested in accordance with GB / T 5453-1997. The test pressure difference was 100Pa. Each group was tested in parallel for 5 times, and the average value was recorded.

[0125] Moisture permeability: The moisture permeability of the prepared unidirectional moisture-wicking fabric was tested according to GB / T 12704.2-2009. The temperature was (38±2)℃ and the relative humidity was (50±2)%. The test was conducted using method A, the positive cup method. Each group was tested in parallel for 5 times, and the average value was recorded.

[0126] The results are shown in Table 2.

[0127] Table 2

[0128]

[0129] A comparison of the experimental data from Examples 1-3 and Comparative Examples 13-24 in Table 2 reveals that the unidirectional moisture-wicking fabric prepared by this invention has good unidirectional moisture-wicking properties, air permeability, and moisture permeability.

[0130] By comparing the data in the table, the data in Comparative Example 13 shows that the pre-modification of mesoporous nano-silica with aminosiloxane successfully introduced amino groups into its surface, introducing groups that will participate in the subsequent multi-component reaction. This successfully improved the dispersion performance of mesoporous nano-silica in the modification solution, forming a better hydrophobic surface and a larger wetting gradient after plasma etching, thereby improving its unidirectional moisture conduction performance.

[0131] By comparing the data in the table, the data in Comparative Example 14 shows that when oleoylsarcosine was introduced into the multi-component reaction during the preparation of modified mesoporous nano-silica, hydrophobic long chains were successfully introduced onto the surface of the modified mesoporous nano-silica. This resulted in better hydrophobic properties after the coating was dispersed in the modification solution and formed a larger wetting gradient after plasma etching, thereby improving the unidirectional moisture conduction performance.

[0132] By comparing the data in the table, the data in Comparative Example 16 shows that the pre-modified mesoporous nano silica was modified by a multi-component reaction, which introduced hydrophobic groups onto it. After it was dispersed in the modification solution to form a coating, it had better hydrophobic properties and formed a larger wetting gradient after plasma etching, thereby improving its unidirectional moisture-wicking properties.

[0133] Comparing the data in the table, the data from Comparative Example 21 demonstrates that the addition of modified polyurethane to the modified finishing solution forms a good coating matrix. Through electrostatic bonding, hydrogen bonding, siloxane coupling, and double bonds, it loads more hydrogen-containing silicone oil and silver-modified mesoporous nano-silica onto the fabric surface, resulting in a coating with better hydrophobic properties and a larger wetting gradient after plasma etching, thus improving unidirectional moisture permeability. The increase in air permeability and moisture permeability is due to the reduced coating load, which reduces the obstruction of fabric pores, thereby increasing air permeability and moisture permeability.

[0134] By comparing the data in the table, the data in Comparative Example 22 shows that the addition of silver-modified mesoporous nano-silica in the modified finishing solution forms a better hydrophobic surface and a larger wetting gradient after plasma etching, thereby improving the unidirectional moisture conduction performance.

[0135] The data comparison in the table shows that the addition of hydrogen-containing silanes in the modified finishing solution provides siloxane chains with lower surface energy, effectively improving hydrophobic properties, forming a good hydrophobic surface, and creating a larger wetting gradient after plasma etching, thereby improving unidirectional moisture permeability. The increase in air permeability and moisture permeability is due to the reduction in the hydrophobicity of the coating, which reduces the obstruction of fabric pores, thus increasing air permeability and moisture permeability.

[0136] By comparing the data in the table, the data in Comparative Example 24 shows that plasma etching effectively removes part of the hydrophobic coating formed by the curing of the modified finishing liquid, thereby creating a wetting gradient with different hydrophilic and hydrophobic properties on both sides of the unidirectional moisture-wicking fabric, effectively improving the unidirectional moisture-wicking performance. Furthermore, by etching away the hydrophobic coating, the pore channels are expanded, so that the air permeability and moisture permeability are not affected.

[0137] Test Example 3:

[0138] Functional testing: The antibacterial, flame-retardant, and hydrophobic properties of the prepared unidirectional moisture-wicking fabric were tested to evaluate its performance. The specific test methods are as follows:

[0139] Antibacterial properties: The shaking method in GB / T 20944.3-2008 was used. 0.75±0.05g of the prepared one-way moisture-wicking fabric was cut off and mixed with the bacterial solution and shaken for 5min. The shaken bacterial solution was then cultured in agar medium. The inhibition rate of the anti-mite and antibacterial fabric against Escherichia coli and Staphylococcus aureus was determined by the number of colonies. Each group of samples was tested 5 times and the average value was recorded.

[0140] Flame retardancy: The limiting oxygen index of the prepared unidirectional moisture-wicking fabric was tested in accordance with GB / T 5454-1997. The sample size was 158mm×58mm. 15 samples were tested in each group, and the average value was recorded.

[0141] Hydrophobicity: The test was conducted using an OCA25 optical contact angle meter. A 4cm×4cm one-way moisture-wicking fabric was fixed on a glass slide with a droplet volume of 3μL. The droplet method was used to measure five different positions on the hydrophobic surface of each sample and the average value was taken.

[0142] The results are shown in Table 3.

[0143] Table 3

[0144]

[0145] A comparison of the experimental data from Examples 1-3 and Comparative Examples 13-24 in Table 3 reveals that the unidirectional moisture-wicking fabric prepared by this invention has good antibacterial, flame-retardant, and hydrophobic properties.

[0146] By comparing the data in the table, the data in Comparative Example 13 shows that the pre-modification of mesoporous nano-silica introduces subsequent reactive groups, thereby increasing the loading of silver ions and improving antibacterial properties. At the same time, the introduction of hydrophobic segments improves hydrophobic properties.

[0147] The data comparison in the table shows that the introduction of oleoylsarcosine into modified mesoporous nano silica successfully introduced a hydrophobic long chain, improving the hydrophobic properties.

[0148] The data comparison in the table shows that the 4-pyridine carboxaldehyde introduced into the modified mesoporous nano silica introduces a pyridine group with good complexing properties, which can effectively complex more silver ions, thereby increasing the silver ion loading and improving the antibacterial properties.

[0149] By comparing the data in the table, the data in Comparative Example 16 shows that the modification of pre-modified mesoporous nano-silica through multi-component reaction introduces hydrophobic long chains and pyridine groups with better complexing properties, which effectively improves antibacterial and hydrophobic properties.

[0150] The data comparison in the table shows that silver ions were successfully loaded onto the modified mesoporous nano silica, which exhibits excellent antibacterial properties.

[0151] By comparing the data in the table, the data in Comparative Example 18 shows that the use of 10-(2,5-dihydroxyphenyl)-10-hydro-9-oxa-10-phosphaphenanthrene-10-oxide as a chain extender in modified polyurethane introduces the flame retardant element phosphorus, which forms a synergistic flame retardant effect with the flame retardant element silicon, effectively improving the flame retardant performance.

[0152] By comparing the data in the table, the data in Comparative Example 21 shows that the addition of modified polyurethane to the modified finishing liquid increases the loading of hydrogen-containing silicone oil and silver-loaded modified mesoporous nano silica. It itself has a large amount of flame-retardant elements phosphorus and quaternary ammonium cationic structure, which effectively improves antibacterial, hydrophobic and flame-retardant properties.

[0153] By comparing the data in the table, the data in Comparative Example 22 shows that the addition of silver-loaded modified mesoporous nano-silica to the modified finishing solution effectively improves the antibacterial properties and forms a synergistic antibacterial effect with the quaternary ammonium cation structure on the modified polyurethane. It also forms a surface with greater roughness in the hydrophobic coating, thereby improving the hydrophobic properties.

[0154] By comparing the data in the table, the data in Comparative Example 23 shows that the addition of hydrogen-containing silicone oil introduces a large amount of flame-retardant nitrogen and hydrophobic siloxane chains, which effectively improves the hydrophobic and flame-retardant properties.

[0155] Test Example 4:

[0156] Washability test: The prepared unidirectional moisture-wicking fabric was washed and dried multiple times according to GB / T 8629-2017. A washing machine that meets the C-type standard was used. The 3N washing program in Appendix F was selected. Standard detergent 4 was used at a dosage of 1.33 g / L and a liquor ratio of 1:40 g / ml. The sample size was 50 cm × 50 cm. The drying program A was used to hang the fabric to dry. One wash and one dry cycle was counted as one cycle. A total of 50 cycles were performed. Then, the antibacterial and hydrophobic properties were tested again according to the test method in Test Example 3. Each group was tested in parallel 5 times, and the average value was recorded.

[0157] The results are shown in Table 4.

[0158] Table 4

[0159]

[0160] By comparing the experimental data of Examples 1-3 and Comparative Examples 13-24 in Table 4 with the data in Table 3, it can be found that the unidirectional moisture-wicking fabric prepared by the present invention has good water-washing resistance.

[0161] By comparing the data in the table, the data of Comparative Examples 13-14 show that the pre-modification of mesoporous nano-silica introduces the reactive amino group, thus providing a reaction basis for subsequent multi-component reactions. This allows the pyridine group that increases the silver ion loading and the hydrophobic long carbon chain that provides double bonds to be successfully integrated. The hydrophobic long carbon chain containing double bonds is covalently connected to the double bonds on the modified polyurethane and the silane-hydrogen bonds on the hydrogen-containing silicone oil, effectively improving the water washability.

[0162] The data in the table shows that introducing pyridine groups into modified mesoporous nano-silica can effectively increase the loading of silver ions. At the same time, pyridine groups are strong complexing groups, which can reduce the dissolution of silver ions, thus maintaining good antibacterial properties even after multiple water washes.

[0163] By comparing the data in the table, the data in Comparative Example 16 shows that the pre-modified mesoporous nano-silica was modified through a multi-component reaction, which introduced pyridine groups that can increase the silver ion loading and hydrophobic long carbon chains that provide double bonds. The hydrophobic long carbon chains containing double bonds are covalently connected to the double bonds on the modified polyurethane and the silane-hydrogen bonds on the hydrogen-containing silicone oil, which effectively improves the water washability.

[0164] By comparing the data in the table, the data of Comparative Example 19 shows that the introduction of γ-aminoethylaminopropyltrimethoxysilane into the modified polyurethane was successful. Siloxane groups were introduced into the polyurethane chain segments, which can be hydrolyzed and linked to hydroxyl groups, thereby improving the bonding performance with the fabric itself. At the same time, some silver-loaded modified mesoporous nano-silica was fixed, effectively improving the wash resistance.

[0165] By comparing the data in the table, the data of Comparative Example 20 shows that the use of pentaerythritol triacrylate to end-cap the modified polyurethane introduces double bond groups into the polyurethane chain segments. These groups can react with the double bonds on the silver-modified mesoporous nano-silica and the silane-hydrogen bonds on the hydrogen-containing silicone oil to form covalent bonds, thereby fixing both and reducing losses during the washing process, thus improving the water resistance performance.

[0166] By comparing the data in the table, the data in Comparative Example 21 shows that the addition of modified polyurethane to the modified finishing solution provides better bonding performance with the fabric surface, thereby effectively improving the wash resistance and helping to fix the hydrogen-containing silicone oil and silver-loaded modified mesoporous nano-silica, thus maintaining good hydrophobic and antibacterial properties even after multiple washes.

[0167] By comparing the data in the table, the data in Comparative Example 23 shows that the addition of hydrogen-containing silicone oil connects the modified polyurethane and the silver-modified mesoporous nano silica through silicon-hydrogen bonds, and provides hydrophobic properties, effectively improving the water wash resistance.

[0168] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A unidirectional moisture-wicking fabric, characterized in that, The unidirectional moisture-wicking fabric is made by immersing the fabric in a modified finishing solution, drying it, and then etching it at room temperature using plasma etching. The modified finishing liquid is prepared by mixing modified polyurethane, silver-loaded modified mesoporous nano silica, hydrogen-containing silicone oil, chloroplatinic acid, and water. The modified polyurethane is prepared by reacting isophorone diisocyanate with polyester diol, then with a chain extender, end-capping with pentaerythritol triacrylate, and neutralizing with iodomethane; the chain extender includes 10-(2,5-dihydroxyphenyl)-10-hydro-9-oxa-10-phosphaphenanthrene-10-oxide, γ-aminoethylaminopropyltrimethoxysilane, and N-methyldiethanolamine; The silver-loaded modified mesoporous nano-silica is prepared by loading silver ions onto modified mesoporous nano-silica; the modified mesoporous nano-silica is prepared by reacting pre-modified mesoporous nano-silica with oleoylsarcosine, 4-pyridinecarboxaldehyde, and ethyl isocyanate; the pre-modified mesoporous nano-silica is prepared by modifying mesoporous nano-silica with a silane-modified solution.

2. The unidirectional moisture-wicking fabric according to claim 1, characterized in that, The fabric is made of cotton, polyester, spandex, nylon, or acrylic fibers, either woven alone or in blends.

3. The unidirectional moisture-wicking fabric according to claim 1, characterized in that, The preparation method of the silver-modified mesoporous nano-silica includes the following steps: (1) Mix mesoporous nano silica and anhydrous ethanol, disperse by ultrasonication, add silane modified solution and mix, stir and reflux to react, centrifuge, wash and dry to obtain pre-modified mesoporous nano silica; (2) Mix pre-modified mesoporous nano silica, oleoyl sarcosine, 4-pyridine carboxaldehyde, ethyl isocyanate and methanol evenly, stir, centrifuge, wash and dry in a closed environment at room temperature to obtain modified mesoporous nano silica. (3) Mix the modified mesoporous nano silica, silver nitrate aqueous solution and pure water evenly, stir at room temperature, centrifuge and dry to obtain silver-loaded modified mesoporous nano silica.

4. The method for preparing a unidirectional moisture-wicking fabric according to claim 3, characterized in that, The preparation method of the pre-modified mesoporous nano silica includes the following steps: by mass, 2-3 parts of mesoporous nano silica and 15-20 parts of anhydrous ethanol are mixed evenly, ultrasonically dispersed, 10-12 parts of silane modification solution are added and mixed evenly, refluxed for 8-9 hours, centrifuged, washed, and vacuum dried to obtain the product.

5. The unidirectional moisture-wicking fabric according to claim 3, characterized in that, The modified mesoporous nano silica is prepared by mixing 2-3 parts of pre-modified mesoporous nano silica, 0.64-0.96 parts of oleoylsarcosine, 0.19-0.29 parts of 4-pyridinecarboxaldehyde, 0.2-0.3 parts of ethyl isocyanate, and 40-50 parts of methanol by mass, stirring at room temperature in a closed environment for 24-28 hours, centrifuging to remove the liquid, washing, and vacuum drying.

6. The method for preparing a unidirectional moisture-wicking fabric according to claim 3, characterized in that, The silver-modified mesoporous nano-silica is prepared by mixing 0.3-0.4 parts of modified mesoporous nano-silica, 1-1.2 parts of 0.5 mol / L silver nitrate aqueous solution, and 70-80 parts of pure water by mass, stirring at room temperature for 12-13 hours, centrifuging to remove the liquid, and vacuum drying for 8-10 hours.

7. The unidirectional moisture-wicking fabric according to claim 1, characterized in that, The preparation method of the modified finishing liquid includes the following steps: by mass, 4-5 parts of modified polyurethane, 0.8-0.9 parts of silver-loaded modified mesoporous nano silica, 2-3 parts of hydrogen-containing silicone oil, 0.002-0.003 parts of chloroplatinic acid, and 90-100 parts of pure water are mixed evenly and stirred evenly at room temperature to obtain the final product.

8. The unidirectional moisture-wicking fabric according to claim 1, characterized in that, The preparation method of the modified polyurethane includes the following steps: Under a nitrogen atmosphere, 53.99~80.98 parts by mass of polyester diol, 20~30 parts by mass of isophorone diisocyanate, 0.85~1.28 parts by mass of dibutyltin dilaurate, and 30~40 parts by mass of propylene glycol monomethyl ether acetate are mixed evenly, and stirred at 85~90℃ for 1.5~2 hours. After cooling, 4.38~6.56 parts by mass of 10-(2,5-dihydroxyphenyl)-10-hydro-9-oxa-10-phosphaphenanthrene-10-oxide are added, and stirred at 70~75℃ for 1.5~2 hours. Add 2-3 parts of γ-aminoethylaminopropyltrimethoxysilane, stir and react at 55-60℃ for 1.5-2 hours, add 1.07-1.61 parts of N-methyldiethanolamine, stir and react at 40-45℃ for 60-80 minutes, add 2.68-4.03 parts of pentaerythritol triacrylate and 0.013-0.02 parts of hydroquinone, stir and react at 45-50℃ for 45-50 minutes, add 1.28-1.92 parts of iodomethane, stir and react at 25-30℃ for 50-60 minutes, and remove propylene glycol monomethyl ether acetate by vacuum distillation to obtain the final product.

9. A method for preparing a unidirectional moisture-wicking fabric, characterized in that, The preparation process includes the following steps: immersing and rolling the fabric in a modified finishing solution, drying and curing, and then performing atmospheric pressure plasma etching to obtain a one-way moisture-wicking fabric.

10. A method for preparing a unidirectional moisture-wicking fabric according to claim 9, characterized in that, The unidirectional moisture-wicking fabric is prepared by immersing the fabric in a modified finishing solution at a bath ratio of 1:(30~40)g / L for 20~22 minutes, followed by one dip and one roll, with a roll-off rate of 80%~90%, drying and curing, and then performing atmospheric pressure plasma etching.

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