A hydrogel composite fabric with moisture absorption and retention performance and a preparation method thereof

Abstract

The present application relates to the technical field of textile products, in particular to a water gel composite fabric with moisture absorption and retention performance and a preparation method thereof. The method first prepares initiator-loaded fabric by fabric and initiator; then the initiator-loaded fabric is reacted with [2-(methacryloyloxy)ethyl]dimethyl-(3-sulfopropyl) ammonium hydroxide (DMAPS) to obtain a water gel composite fabric material. The preparation method does not involve complex equipment, the raw material price is low, and the process is simple and easy to operate; the prepared material has excellent properties such as moisture absorption, moisture retention and cool comfort, expands the function and application range of the original fabric material, has good economic added value and broad market prospect.

Description

Technical Field

[0001] The present invention relates to the technical field of textile products, in particular to a hydrogel composite fabric with moisture absorption and moisture retention properties and a preparation method thereof. Background Art

[0002] Hydrogels are soft materials with a three-dimensional polymer network structure and water as the dispersion medium. The polymer network imparts solid-like morphological properties to hydrogels, while the diffusion and permeation of the aqueous medium allows them to combine the functions and behaviors of liquids. Thanks to their solid-liquid properties, hydrogels are thriving in applications such as water retention and drought resistance, drug delivery, and antifouling coatings. Zwitterionic polymers, with their high ionic group density, anti-polyelectrolyte effect, and temperature responsiveness, show promising applications in antifouling coatings, moisturizing and antibacterial properties, and membrane separation materials.

[0003] Each structural unit of the three-dimensional polymer network of zwitterionic hydrogels contains equal numbers of cationic and anionic groups, resulting in an overall neutral charge. This extremely high density of ionic groups makes the molecular chains within the zwitterionic hydrogels highly hydrophilic with water, forming a dense, highly hydrophilic hydration layer on their surface. Furthermore, the unique repeating zwitterionic groups contribute to the material's high water retention capacity, which has led to extensive research and practical applications.

[0004] During the autumn and winter months, and in inland cities with dry climates, people often experience dry skin. Furthermore, more and more people are suffering from skin disorders such as eczema and allergies. Therefore, improving dry skin and providing skin care are crucial. Cosmetics are commonly used to treat dry skin, but these are cumbersome to apply and require regular, proactive application. This is precisely why moisturizing skin care fabrics have emerged. Moisturizing skin care fabrics are textiles with both moisturizing and skin care properties, typically made from cotton, silk, or other synthetic fibers. The main advantage of moisturizing skin care fabrics is that they help maintain skin moisture and provide additional nutrients, thereby improving skin condition. They are suitable for all skin types, especially dry and sensitive skin. Furthermore, they protect the skin from damage caused by external irritants and UV radiation.

[0005] However, current moisturizing skin-care fabrics have several drawbacks, with high cost being the primary drawback hindering their development. This high cost is due to the addition of specialized ingredients and the use of novel manufacturing processes, which generally result in a higher cost than conventional fabrics. The complex manufacturing processes of existing moisturizing skin-care fabrics contribute to their high price, which in turn limits further growth in their consumption.

[0006] Therefore, developing a low-cost moisturizing skin care fabric product that is suitable for a large number of consumers has important practical significance and application value. Summary of the Invention

[0007] The present invention aims to address the high cost of current moisturizing skin-care fabrics, as noted in the background art. It provides a moisture-absorbing, moisturizing, and skin-friendly hydrogel composite fabric, along with a specific preparation method. The fabric produced by this method exhibits high moisturizing properties, utilizes inexpensive raw materials, has a short synthesis route, and employs a simple manufacturing process, enabling mass production of low-cost moisturizing fabrics.

[0008] Specifically, the present invention adopts the following technical solutions:

[0009] A method for preparing a hydrogel composite fabric with moisture absorption and moisture retention properties, the preparation method specifically comprising the following steps:

[0010] (1) First, 1.5-6.0 g of fabric is ultrasonically treated in a sodium hydroxide solution with a concentration of 20-40 g / L for 1-2 hours, and then the fabric is repeatedly washed with deionized water until it becomes neutral, and then dried at 70-80°C for 8-12 hours to obtain a pretreated fabric;

[0011] (2) 8.0-14.0 g of [2-(methacryloyloxy)ethyl]dimethyl-(3-sulfonic acid propyl)ammonium hydroxide (DMAPS) and a cross-linking agent were mixed evenly in 100 mL of deionized water, and nitrogen was introduced into the mixture for 45-75 minutes to obtain a treated solution;

[0012] (3) preparing a persulfate initiator solution, and evenly spraying the persulfate initiator solution onto the pretreated fabric obtained in step (1), and then airing the fabric in a ventilated place at room temperature for 10-12 hours to obtain an initiator-loaded fabric;

[0013] (4) Immersing the initiator-loaded fabric obtained in step (3) in the treatment solution obtained in step (2), reacting at 60-70° C. for 8-10 hours, and preparing a hydrogel composite fabric material with moisture absorption and moisture retention properties.

[0014] Furthermore, the molar ratio of the initiator to DMAPS is 0.01-0.04:1.

[0015] Furthermore, the initiator is ammonium persulfate or potassium persulfate.

[0016] Furthermore, the molar ratio of the cross-linking agent to DMAPS is 0.02-0.05:1.

[0017] Furthermore, the cross-linking agent is N,N'-methylenebisacrylamide (MBAA).

[0018] Furthermore, the amount of the initiator-loaded fabric added in step (4) is 20-40% of the mass of DMAPS.

[0019] Furthermore, the amount of initiator-loaded fabric added in step (4) is 35-40% of the mass of DMAPS.

[0020] Furthermore, the fabric is cotton fabric, linen fabric or chemical fiber fabric.

[0021] A hydrogel composite fabric with moisture absorption and moisture retention properties is prepared by the above-mentioned preparation method.

[0022] In the above embodiment of the present invention, 2-(methacryloyloxy)ethyl]dimethyl-(3-sulfopropyl)ammonium hydroxide (DMAPS) possesses hydrophilic sulfonic acid groups, which have excellent hygroscopic properties, allowing it to rapidly absorb water and retain it within its molecular structure. Furthermore, the zwitterionic polymer, with its positive and negative charges, enhances the interaction between water molecules, forming a stable water molecule network and providing strong moisturizing properties.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The preparation method of the present invention does not involve complex equipment, has low raw material prices, and a simple and easy process. Therefore, the overall cost is relatively low, and moisturizing fabrics can be produced in large quantities, which is conducive to the market development of moisturizing skin care fabrics.

[0025] The prepared fabric has good moisturizing effect, retains the fabric's own macro-pore structure, makes the material have good air permeability, and has certain antifouling and antibacterial properties;

[0026] The application prospects are good, and it is expected to promote the development of the moisturizing fabric market and further expand the application scenarios of cotton fabrics. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a scanning electron microscope comparison of conventional cotton fabric and the hydrogel composite fabric material prepared in the present invention;

[0028] Wherein, a is conventional cotton fabric, and b is the hydrogel composite fabric material prepared by the present invention.

[0029] Figure 2 This is a schematic diagram of the principle of the hydrogel composite fabric material prepared by the present invention.

[0030] Figure 3 This is a physical picture of the hydrogel composite fabric material prepared by the present invention.

[0031] Figure 4 This is a comparison chart of the cost of the hydrogel composite fabric material prepared by the present invention and commonly used moisturizing fabrics. Implementation Method

[0032] Representative embodiments will now be further refined. It should be understood that the following description is not intended to limit the embodiments to a preferred embodiment. On the contrary, it is intended to encompass alternatives, modifications, and equivalents that may be included within the spirit and scope of the embodiments defined by the appended claims.

[0033] The present invention provides a hydrogel composite fabric with moisture absorption and moisture retention properties; the fabric is prepared from cotton fabric, linen fabric or chemical fiber fabric by the following method:

[0034] (1) First, 1.5-6.0 g of fabric is ultrasonically treated in a sodium hydroxide solution with a concentration of 20-40 g / L for 1-2 hours, and then the fabric is repeatedly washed with deionized water until it becomes neutral, and then dried at 70-80°C for 8-12 hours to obtain a pretreated fabric;

[0035] (2) 8.0-14.0 g of [2-(methacryloyloxy)ethyl]dimethyl-(3-sulfonic acid propyl)ammonium hydroxide (DMAPS) and a cross-linking agent were mixed uniformly in 100 mL of deionized water, and nitrogen was introduced into the mixture for 45-75 minutes to obtain a treatment solution; the molar ratio of the cross-linking agent to DMAPS was 0.02-0.05:1; the cross-linking agent was N,N'-methylenebisacrylamide (MBAA);

[0036] (3) preparing a persulfate initiator solution, and spraying the persulfate initiator solution uniformly on the pretreated fabric obtained in step (1), and then airing the fabric in a ventilated place at room temperature for 10-12 hours to obtain an initiator-loaded fabric; the molar ratio of the initiator to DMAPS is 0.01-0.04:1; wherein the initiator is ammonium persulfate or potassium persulfate, etc.

[0037] (4) Immersing the initiator-loaded fabric obtained in step (3) in the treatment solution obtained in step (2), and reacting at 60-70° C. for 8-10 hours to prepare a hydrogel composite fabric material with moisture absorption and moisture retention properties. The amount of initiator-loaded fabric added is 20-40% of the mass of DMAPS, and preferably 35-40%.

[0038] The following is a specific preparation example.

[0039] Example 1: The applicant prepared a hydrogel composite fabric with moisture absorption and moisture retention properties through a specific case, specifically using the following steps:

[0040] (1) First, 4.0 g of cotton fabric (CF) was ultrasonically treated in a 30 g / L sodium hydroxide solution for 1 hour. The parameters of the cotton fabric were: yarn count 21S, density 30*28; then, the cotton fabric was repeatedly washed with deionized water until neutral, and then dried at 75 °C for 8 hours to obtain the pretreated fabric;

[0041] (2) 11.0 g of DMAPS and the crosslinking agent MBAA were mixed evenly in 100 mL of deionized water, with the molar ratio of the crosslinking agent MBAA to DMAPS being 0.05:1; nitrogen was introduced for 45 minutes to obtain a treated solution;

[0042] (3) preparing an ammonium persulfate initiator solution according to a molar ratio of initiator to DMAPS of 0.01:1, and spraying the ammonium persulfate initiator solution evenly on the pretreated fabric obtained in step (1), and then airing the fabric in a ventilated place at room temperature for 10 hours to obtain an initiator-loaded fabric;

[0043] (4) Immersing the initiator-loaded fabric obtained in step (3) in the treatment solution obtained in step (2), wherein the amount of initiator-loaded fabric added is 36% of the mass of DMAPS; reacting at 65° C. for 8 hours to prepare a hydrogel composite fabric material with moisture absorption and moisture retention properties.

[0044] The hydrogel composite fabric material has excellent moisturizing properties, all of which is attributed to the rational design of the composite material (such as Figure 2 ).

[0045] Example 2: A hydrogel composite fabric with moisture absorption and moisture retention properties, specifically using the following steps:

[0046] (1) First, 4.0 g of cotton fabric (CF) was ultrasonically treated in a 30 g / L sodium hydroxide solution for 1 hour. The parameters of the cotton fabric were: yarn count 21S, density 30*28; then, the cotton fabric was repeatedly washed with deionized water until neutral, and then dried at 75 °C for 8 hours to obtain the pretreated fabric;

[0047] (2) 11.0 g of DMAPS and the crosslinking agent MBAA were mixed evenly in 100 mL of deionized water, with the molar ratio of the crosslinking agent MBAA to DMAPS being 0.05:1; nitrogen was introduced for 45 minutes to obtain a treated solution;

[0048] (3) A potassium persulfate initiator solution was prepared according to a molar ratio of initiator to DMAPS of 0.01:1, and the potassium persulfate initiator solution was evenly sprayed on the pretreated fabric obtained in step (1), and then the fabric was air-dried in a ventilated place at room temperature for 10 hours to obtain an initiator-loaded fabric;

[0049] (4) Immersing the initiator-loaded fabric obtained in step (3) in the treatment solution obtained in step (2), wherein the amount of initiator-loaded fabric added is 36% of the mass of DMAPS; reacting at 65°C for 8 hours to prepare a hydrogel composite fabric material with moisture absorption and moisture retention properties.

[0050] Example 3: A hydrogel composite fabric with moisture absorption and moisture retention properties, specifically using the following steps:

[0051] (1) First, 5.6 g of cotton fabric (CF) was ultrasonically treated in a 30 g / L sodium hydroxide solution for 1 hour. The parameters of the cotton fabric were: yarn count 21S, density 40*40. Then, the cotton fabric was repeatedly washed with deionized water until neutral, and then dried at 75 °C for 8 hours to obtain the pretreated fabric.

[0052] (2) 14.0 g of DMAPS and the crosslinking agent MBAA were mixed evenly in 100 mL of deionized water, with the molar ratio of the crosslinking agent MBAA to DMAPS being 0.05:1; nitrogen was introduced for 45 minutes to obtain a treated solution;

[0053] (3) preparing an ammonium persulfate initiator solution according to a molar ratio of initiator to DMAPS of 0.01:1, and spraying the ammonium persulfate initiator solution evenly on the pretreated fabric obtained in step (1), and then airing the fabric in a ventilated place at room temperature for 10 hours to obtain an initiator-loaded fabric;

[0054] (4) Immersing the initiator-loaded fabric obtained in step (3) in the treatment solution obtained in step (2), wherein the amount of initiator-loaded fabric added is 40% of the mass of DMAPS; reacting at 65° C. for 8 hours to prepare a hydrogel composite fabric material with moisture absorption and moisture retention properties.

[0055] Example 4: A hydrogel composite fabric with moisture absorption and moisture retention properties, specifically using the following steps:

[0056] (1) First, 1.8 g of cotton fabric (CF) was ultrasonically treated in a 30 g / L sodium hydroxide solution for 1 hour. The parameters of the cotton fabric were: yarn count 40S, density 28*24; then, the cotton fabric was repeatedly washed with deionized water until neutral, and then dried at 75 °C for 8 hours to obtain the pretreated fabric;

[0057] (2) 14.0 g of DMAPS and the crosslinking agent MBAA were mixed evenly in 100 mL of deionized water, with the molar ratio of the crosslinking agent MBAA to DMAPS being 0.05:1; nitrogen was introduced for 45 minutes to obtain a treated solution;

[0058] (3) preparing an ammonium persulfate initiator solution according to a molar ratio of initiator to DMAPS of 0.01:1, and spraying the ammonium persulfate initiator solution evenly on the pretreated fabric obtained in step (1), and then airing the fabric in a ventilated place at room temperature for 10 hours to obtain an initiator-loaded fabric;

[0059] (4) Immersing the initiator-loaded fabric obtained in step (3) in the treatment solution obtained in step (2), wherein the amount of initiator-loaded fabric added is 21% of the mass of DMAPS; reacting at 65° C. for 8 hours to prepare a hydrogel composite fabric material with moisture absorption and moisture retention properties.

[0060] Example 5: A hydrogel composite fabric with moisture absorption and moisture retention properties, specifically using the following steps:

[0061] (1) First, 2.6 g of cotton fabric (CF) was ultrasonically treated in a 30 g / L sodium hydroxide solution for 1 hour. The parameters of the cotton fabric were: yarn count 40S, density 40*40; then, the cotton fabric was repeatedly washed with deionized water until neutral, and then dried at 75 °C for 8 hours to obtain the pretreated fabric;

[0062] (2) 8.4 g of DMAPS and the crosslinking agent MBAA were mixed evenly in 100 mL of deionized water, with the molar ratio of the crosslinking agent MBAA to DMAPS being 0.05:1; nitrogen was introduced for 45 minutes to obtain a treated solution;

[0063] (3) preparing an ammonium persulfate initiator solution according to a molar ratio of initiator to DMAPS of 0.01:1, and spraying the ammonium persulfate initiator solution evenly on the pretreated fabric obtained in step (1), and then airing the fabric in a ventilated place at room temperature for 10 hours to obtain an initiator-loaded fabric;

[0064] (4) Immersing the initiator-loaded fabric obtained in step (3) in the treatment solution obtained in step (2), wherein the amount of initiator-loaded fabric added is 31% of the mass of DMAPS; reacting at 65° C. for 8 hours to prepare a hydrogel composite fabric material with moisture absorption and moisture retention properties.

[0065] Comparative Example 1: The preparation method of the material of this comparative example specifically comprises the following steps:

[0066] 4.0 g of CF was ultrasonically cleaned in 30 g / L NaOH solution for 1 h, then repeatedly washed with deionized water until neutral, and dried at 75 °C for 8 h to obtain clean CF.

[0067] The moisture absorption and release properties of the gel fabric of the present invention were tested and compared with those of Comparative Example 1. The results are shown in Table 1 below.

[0068] The data in the following table are the results of moisture absorption and desorption measurements for the above-mentioned examples and comparative examples. The measurements were conducted in accordance with the relevant standards of the national standard "GB / T 41767-2022 Test method for moisture absorption and equilibrium state adjustment of polymer-based composite materials."

[0069] 40℃, 90% RH (moisture absorption) performance comparison table:

[0070]

[0071] 20℃, 65% RH (dehumidification) performance comparison table:

[0072]

[0073] The moisture content (R) of the fabrics in the table is calculated using the following formula:

[0074] ;

[0075] Where M1 is the mass of the gel after moisture absorption and desorption, and M0 is the original mass of the composite material.

[0076] As can be seen from the above table, the results show that the woven fabric of the present invention has much better moisture absorption and moisture retention than the original cotton woven products. The balance of moisture absorption and moisture release of the product in different environments shows that the product has excellent moisture retention function. The woven fabric of the present invention has good moisture absorption and moisture retention effects, and the raw materials are cheap and easy to obtain, and the preparation method is simple, which has obvious price advantages (such as Figure 3 It can be mass-produced and is suitable for developing underwear, home wear, sportswear, and medical textile fabrics with special purposes.

[0077] The present invention adopts a method with simple process and low raw material cost, and the fabric produced has good moisturizing properties. It has good application prospects and is expected to promote the development of the moisturizing fabric market and further expand the application scenarios of cotton fabrics.

[0078] It is obvious to those skilled in the art that certain modifications, combinations and variations can be made based on the above teachings.

Claims

1. A method for preparing a hydrogel composite fabric with moisture absorption and moisture retention properties, characterized in that: The preparation method specifically comprises the following steps: (1) First, 1.5-6.0 g of fabric is ultrasonically treated in a sodium hydroxide solution with a concentration of 20-40 g / L for 1-2 hours, and then the fabric is repeatedly washed with deionized water until it becomes neutral, and then dried at 70-80°C for 8-12 hours to obtain a pretreated fabric; (2) 8.0-14.0 g of [2-(methacryloyloxy)ethyl]dimethyl-(3-sulfonic acid propyl)ammonium hydroxide (DMAPS) and a cross-linking agent were mixed evenly in 100 mL of deionized water, and nitrogen was introduced into the mixture for 45-75 minutes to obtain a treated solution; (3) preparing a persulfate initiator solution, and evenly spraying the persulfate initiator solution onto the pretreated fabric obtained in step (1), and then airing the fabric in a ventilated place at room temperature for 10-12 hours to obtain an initiator-loaded fabric; (4) Immersing the initiator-loaded fabric obtained in step (3) in the treatment solution obtained in step (2), reacting at 60-70° C. for 8-10 hours, and preparing a hydrogel composite fabric material with moisture absorption and moisture retention properties.

2. The method for preparing a hydrogel composite fabric with moisture absorption and moisture retention properties according to claim 1, characterized in that: The molar ratio of the persulfate initiator to DMAPS is 0.01-0.04:

1.

3. The method for preparing a hydrogel composite fabric with moisture absorption and moisture retention properties according to claim 1 or 2, characterized in that: The persulfate initiator is ammonium persulfate or potassium persulfate.

4. The method for preparing a hydrogel composite fabric with moisture absorption and moisture retention properties according to claim 1, characterized in that: The molar ratio of the cross-linking agent to DMAPS is 0.02-0.05:

1.

5. The method for preparing a hydrogel composite fabric with moisture absorption and moisture retention properties according to claim 1 or 4, characterized in that: The cross-linking agent is N,N'-methylenebisacrylamide.

6. The method for preparing a hydrogel composite fabric with moisture absorption and moisture retention properties according to claim 1 or 4, characterized in that: The amount of initiator-loaded fabric added in step (4) is 20-40% of the mass of DMAPS.

7. The method for preparing a hydrogel composite fabric with moisture absorption and moisture retention properties according to claim 6, characterized in that: The amount of initiator-loaded fabric added in step (4) is 35-40% of the mass of DMAPS.

8. The method for preparing a hydrogel composite fabric with moisture absorption and moisture retention properties according to claim 1, characterized in that: The fabric is cotton fabric, linen fabric or chemical fiber fabric.

9. A hydrogel composite fabric with moisture absorption and moisture retention properties, characterized in that: The invention is prepared by the preparation method according to any one of claims 1 to 8.

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