Moisture-absorbing breathable fabric and preparation method thereof

Abstract

The invention relates to the technical field of fabrics, and discloses a moisture-absorbing breathable fabric and a preparation method thereof.The fabric is prepared by weaving spandex fibers and cotton fibers as raw materials into gray fabric and then putting the gray fabric into prepared antibacterial finishing liquid to be subjected to padding treatment; the antibacterial finishing liquid is prepared from the following raw materials: antibacterial aerogel, an antioxidant, a surfactant, silicone oil and water; wherein the antibacterial aerogel is a sodium alginate derivative of which the structure contains zinc pyrithione, the antibacterial aerogel has a porous structure, the moisture absorption and air permeability of the fabric can be further improved, and the zinc pyrithione in the antibacterial aerogel structure has a broad-spectrum antibacterial effect, so that the antibacterial performance of the fabric is effectively improved; the problems of discoloration, embrittlement, bacterial plaque, peculiar smell and the like of the fabric caused by growth and reproduction of microorganisms on the fabric are avoided, and the fabric has a wide application prospect.

Description

Technical Field

[0001] The invention relates to the technical field of fabrics, and in particular to a moisture-absorbing and breathable fabric and a preparation method thereof. Background Art

[0002] Fabrics play a vital role in people's daily lives. With the rapid development of science and technology and the continuous improvement of people's living standards, a variety of fabrics have emerged in an endless stream to meet the different needs of consumers. Among them, spandex / cotton fabric is a fiber fabric synthesized from spandex and cotton. It has the advantages of good air permeability, good moisture absorption, soft hand feel, high elasticity, and not easy to wrinkle. It is widely used in clothing, medical, home furnishing, footwear and other fields.

[0003] In today's society, people's awareness of health and safety has increased, making traditional spandex / cotton fabrics no longer meet people's needs, especially the poor antibacterial properties of traditional spandex / cotton fabrics. In life, people will inevitably come into contact with various bacteria, fungi and other microorganisms. When basic conditions such as nutrition, moisture, oxygen and suitable temperature are met, the fabrics are easily contaminated by microorganisms. The growth and reproduction of microorganisms on the fabrics will, on the one hand, cause discoloration, brittleness, plaque, odor and other problems on the fabrics, and on the other hand, induce various skin diseases and transmit various pathogens, which have a great negative impact on people's quality of life and environmental hygiene. This has greatly restricted the further application of fabrics. Therefore, it is urgent to develop a spandex / cotton fabric with good antibacterial properties.

[0004] In the prior art, the patent with the announcement number CN117005185B discloses an antibacterial fabric and a preparation method thereof, wherein one or more fabrics selected from polyester, cotton fiber, spandex, and modal fiber are immersed in a finishing liquid, and then pre-dried and dried to complete the preparation of the antibacterial fabric, wherein the finishing liquid is prepared from common raw materials such as calcined kaolin, carbon nanotubes, and chitosan, thereby giving the fabric good antibacterial properties. Therefore, by preparing a finishing liquid with antibacterial function, spandex / cotton fabrics can be given good antibacterial properties. Summary of the invention

[0005] In order to solve the problems mentioned in the background technology, the object of the present invention is to provide a moisture-absorbing and breathable fabric and a preparation method thereof.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A method for preparing a moisture-absorbing and breathable fabric comprises the following steps:

[0008] Step 1: Spandex fiber and cotton fiber are respectively spun into yarns through a spinning machine to obtain spandex fiber yarn and cotton fiber yarn, and the spandex fiber yarn is used as the warp and the cotton fiber yarn is used as the weft, and the yarn is woven through a weaving machine to obtain a grey cloth;

[0009] Step 2: Place the blank in a dryer for drying and shaping, set the drying temperature to 75-85°C, and obtain the blank after drying and shaping;

[0010] Step 3: placing the dried and shaped blank in an antibacterial finishing liquid for padding and finishing, and obtaining the fabric after drying;

[0011] The antibacterial finishing liquid comprises the following raw materials in parts by weight: 4 to 8 parts of antibacterial aerogel, 1 to 2 parts of antioxidant, 2 to 4 parts of surfactant, 8 to 12 parts of silicone oil and 40 to 60 parts of water.

[0012] Furthermore, the method for preparing the antibacterial finishing liquid comprises the following steps:

[0013] Add antibacterial aerogel, antioxidant, surfactant, silicone oil and water into a mixer, turn on the heating, control the temperature to 40-50° C., keep warm and stir for 3-5 hours to obtain an antibacterial finishing liquid.

[0014] Furthermore, the method for preparing the antibacterial aerogel comprises the following steps:

[0015] S1: Sodium alginate and dimethyl sulfoxide are stirred and mixed to form a uniform solution, and then diisocyanate monomer and tin catalyst are added to the solution. After the addition is completed, the system temperature is raised to 65-75° C. under stirring conditions, and the temperature is kept for 4-6 hours. The solvent is removed by reduced pressure distillation to obtain modified sodium alginate;

[0016] S2: Add modified sodium alginate to deionized water, stir and mix, then add zinc salt, stir for 3 to 5 hours at a temperature of 60 to 80° C., and discharge to obtain an intermediate material;

[0017] S3: Add sodium pyrithione to the dimethyl sulfoxide solution, stir mechanically to form a uniform liquid, use hydrochloric acid to adjust the pH value of the solution, and then add the intermediate material to the liquid. After the addition is completed, increase the temperature to 60-70°C, stir for 2-4 hours, collect the product, and obtain the antibacterial aerogel after freeze-drying.

[0018] Furthermore, in step S1, the diisocyanate monomer is any one of isophorone diisocyanate, hexamethylene diisocyanate or toluene-2,4-diisocyanate.

[0019] Furthermore, in step S1, the tin catalyst is any one of dibutyltin didodecylsulfide, stannous octoate or dibutyltin dilaurate.

[0020] Furthermore, in step S2, the zinc salt is any one of zinc nitrate, zinc chloride or zinc sulfate.

[0021] Furthermore, in step S3, the freeze-drying treatment is: inject the product into a mold, let it stand until it gels, then place the mold in a temperature environment of -15 to -25°C for storage for 4 to 8 hours, and then transfer it to a freeze dryer for freeze-drying treatment in a temperature environment of -45 to -55°C for 18 to 24 hours.

[0022] It can be inferred that the principle of the above scheme is: in step S1, the hydroxyl group in the sodium alginate structure can react with the isocyanate group in the diisocyanate monomer structure under the action of a tin catalyst to obtain modified sodium alginate; in step S2, ion exchange and complexation occur between sodium alginate and zinc ions, and zinc ions are introduced into the structure of sodium alginate to obtain an intermediate material; in step S3, since pyrithione anions are very easy to react with zinc ions, and under the action of thermal motion, pyrithione anions and zinc ions generate pyrithione zinc in situ, and then after freeze-drying treatment, antibacterial aerogel is obtained.

[0023] Furthermore, the antioxidant is any one of antioxidant 168, antioxidant 1076 or antioxidant 2246.

[0024] Furthermore, in step three, the padding finishing is performed at a temperature of 40 to 50° C. and for a time of 0.5 to 1.5 h.

[0025] A moisture-absorbing and breathable fabric is made by adopting the preparation method.

[0026] Beneficial effects of the present invention:

[0027] (1) The fabric prepared by the present invention is woven into a grey cloth using spandex fiber and cotton fiber as raw materials, and then the grey cloth is immersed in the prepared antibacterial finishing liquid for padding treatment. The prepared fabric has good moisture absorption, air permeability, elasticity and antibacterial properties, overcomes the problem of poor antibacterial properties of traditional spandex / cotton fabrics, and has broad application prospects.

[0028] (2) The present invention prepares a sodium alginate derivative containing zinc pyrithione in the structure as an antibacterial aerogel. First, the antibacterial aerogel has a porous structure, which can further improve the moisture absorption and air permeability of the fabric. Secondly, the antibacterial aerogel contains a large number of carbamate structural units in the structure, which have good affinity and binding force with the carbamate structural units in the spandex fiber. After impregnation and padding, the antibacterial finishing agent can be firmly attached to the surface of the spandex / cotton fabric. In addition, the zinc pyrithione in the antibacterial aerogel structure has a broad-spectrum antibacterial effect, which effectively improves the antibacterial performance of the fabric, avoids the growth and reproduction of microorganisms on the fabric, and causes the fabric to have problems such as discoloration, brittleness, bacterial plaque, odor, etc., thereby extending the service life of the fabric and broadening the application field of the fabric.

[0029] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0031] Figure 1 This is an infrared spectrum test chart of the antibacterial aerogel prepared in Example 1 of the present invention. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Example 1

[0034] 1. Preparation of antibacterial aerogel

[0035] S1: 5 g of sodium alginate and 100 ml of dimethyl sulfoxide were stirred and mixed to form a uniform solution, and then 1.2 g of hexamethylene diisocyanate and 0.05 g of stannous octoate were added to the solution. After the addition was completed, the system temperature was raised to 70° C. under stirring conditions, and the temperature was kept for 5 hours. The solvent was removed by reduced pressure distillation to obtain modified sodium alginate;

[0036] S2: Add 10g of modified sodium alginate to 100ml of deionized water, stir and mix, then add 5g of zinc nitrate, stir at 70°C for 4h, and discharge to obtain an intermediate material;

[0037] S3: Add 8g of sodium pyrithione to 100ml of dimethyl sulfoxide solution, stir mechanically to form a uniform liquid, use 1mol / L hydrochloric acid to adjust the pH value of the solution to 4, and then add 10g of the intermediate material to the liquid. After the addition is completed, raise the temperature to 65°C, stir for 3h, collect the product, inject the product into a mold, let it stand until it gels, and then store the mold in a temperature environment of -20°C for 6h, and then transfer it to a freeze dryer, freeze-dry it in a temperature environment of -50°C for 22h to obtain antibacterial aerogel.

[0038] The infrared spectrum analysis of antibacterial additives was performed using a TENSOR 27 Fourier transform infrared spectrometer produced by BRUKER, Germany. Figure 1 As shown by Figure 1 It can be seen that in the infrared spectrum of antibacterial additives, 1020cm -1 The absorption peak of ether bond COC appears at 3322 cm -1 The absorption peak of -NH in the carbamate structure appears at 1685cm -1 The absorption peak of C=O in the carbamate structure appears at 3074 cm -1 =CH stretching vibration peak on the pyridine ring appears at 1208cm -1 The NO stretching vibration absorption peak of the N-oxide of the pyridine ring appears at 1151 cm -1 The CS stretching vibration absorption peak at the ortho position on the pyridine ring appears.

[0039] 2. Fabric preparation

[0040] Step 1: Spandex fiber and cotton fiber with a mass ratio of 7:3 are respectively spun into yarns through a spinning machine to obtain spandex fiber yarn and cotton fiber yarn, and the spandex fiber yarn is used as the warp and the cotton fiber yarn is used as the weft, and the yarn is woven through a weaving machine to obtain a grey cloth;

[0041] Step 2: Place the blank in a dryer for drying and shaping, set the drying temperature to 75°C, and obtain the blank after drying and shaping;

[0042] Step 3: Add 4 g of antibacterial aerogel, 1 g of antioxidant 168, 2 g of sodium dodecylbenzene sulfonate, 8 g of silicone oil and 40 g of water into a mixer, turn on the heating, control the temperature to 40°C, keep warm and stir for 3 hours to obtain an antibacterial finishing liquid;

[0043] Step 4: Place the dried and shaped blank in the antibacterial finishing liquid at a bath ratio of 1:35, perform padding finishing at 40°C for 0.5h, and then dry at 70°C for 8h to obtain the fabric.

[0044] Example 2

[0045] Fabric preparation

[0046] Step 1: Spandex fiber and cotton fiber with a mass ratio of 8:2 are respectively spun into yarns through a spinning machine to obtain spandex fiber yarn and cotton fiber yarn, and the spandex fiber yarn is used as the warp and the cotton fiber yarn is used as the weft, and the yarn is woven through a weaving machine to obtain a grey cloth;

[0047] Step 2: Place the blank in a dryer for drying and shaping, set the drying temperature to 80°C, and obtain the blank after drying and shaping;

[0048] Step 3: Add 7 g of antibacterial aerogel, 1.5 g of antioxidant 168, 3 g of sodium dodecylbenzene sulfonate, 10 g of silicone oil and 50 g of water into a mixer, turn on the heating, control the temperature to 45°C, keep warm and stir for 4 hours to obtain an antibacterial finishing liquid;

[0049] Step 4: Place the dried and shaped blank in the antibacterial finishing liquid at a bath ratio of 1:40, perform padding finishing at 45°C for 1 hour, and then dry at 75°C for 9 hours to obtain the fabric.

[0050] The preparation method of the antibacterial aerogel is the same as that in Example 1.

[0051] Example 3

[0052] Fabric preparation

[0053] Step 1: Spandex fiber and cotton fiber with a mass ratio of 9:1 are respectively spun into yarns through a spinning machine to obtain spandex fiber yarn and cotton fiber yarn, and the spandex fiber yarn is used as the warp and the cotton fiber yarn is used as the weft, and the yarn is woven through a weaving machine to obtain a grey cloth;

[0054] Step 2: Place the blank in a dryer for drying and shaping, set the drying temperature to 75-85°C, and obtain the blank after drying and shaping;

[0055] Step 3: Add 8 g of antibacterial aerogel, 2 g of antioxidant 168, 4 g of sodium dodecylbenzene sulfonate, 12 g of silicone oil and 60 g of water into a mixer, turn on the heating, control the temperature to 50°C, keep warm and stir for 5 hours to obtain an antibacterial finishing liquid;

[0056] Step 4: Place the dried and shaped blank in the antibacterial finishing liquid at a bath ratio of 1:45, perform padding finishing at 50°C for 1.5 hours, and then dry at 80°C for 10 hours to obtain the fabric.

[0057] The preparation method of the antibacterial aerogel is the same as that in Example 1.

[0058] Comparative Example 1

[0059] Fabric preparation

[0060] Step 1: Spandex fiber and cotton fiber with a mass ratio of 8:2 are respectively spun into yarns through a spinning machine to obtain spandex fiber yarn and cotton fiber yarn, and the spandex fiber yarn is used as the warp and the cotton fiber yarn is used as the weft, and the yarn is woven through a weaving machine to obtain a grey cloth;

[0061] Step 2: Place the blank in a dryer for drying and shaping, set the drying temperature to 80°C, and obtain the blank after drying and shaping;

[0062] Step 3: Add 7 g of zinc pyrithione, 1.5 g of antioxidant 168, 3 g of sodium dodecylbenzene sulfonate, 10 g of silicone oil and 50 g of water into a mixer, turn on the heating, control the temperature to 45°C, keep warm and stir for 4 hours to obtain an antibacterial finishing liquid;

[0063] Step 4: Place the dried and shaped blank in the antibacterial finishing liquid at a bath ratio of 1:40, perform padding finishing at 45°C for 1 hour, and then dry at 75°C for 9 hours to obtain the fabric.

[0064] Comparative Example 2

[0065] Fabric preparation

[0066] Step 1: Spandex fiber and cotton fiber with a mass ratio of 8:2 are respectively spun into yarns through a spinning machine to obtain spandex fiber yarn and cotton fiber yarn, and the spandex fiber yarn is used as the warp and the cotton fiber yarn is used as the weft, and the yarn is woven through a weaving machine to obtain a grey cloth;

[0067] Step 2: Place the blank in a dryer for drying and shaping, set the drying temperature to 80°C, and obtain the blank after drying and shaping;

[0068] Step 3: Add 7 g of modified sodium alginate aerogel, 1.5 g of antioxidant 168, 3 g of sodium dodecylbenzene sulfonate, 10 g of silicone oil and 50 g of water into a mixer, turn on the heating, control the temperature to 45°C, keep warm and stir for 4 hours to obtain an antibacterial finishing liquid;

[0069] Step 4: Place the dried and shaped blank in the antibacterial finishing liquid at a bath ratio of 1:40, perform padding finishing at 45°C for 1 hour, and then dry at 75°C for 9 hours to obtain the fabric.

[0070] The modified sodium alginate aerogel is prepared by freeze-drying the modified sodium alginate prepared in step S1 of Example 1.

[0071] Comparative Example 3

[0072] Fabric preparation

[0073] Step 1: Spandex fiber and cotton fiber with a mass ratio of 8:2 are respectively spun into yarns through a spinning machine to obtain spandex fiber yarn and cotton fiber yarn, and the spandex fiber yarn is used as the warp and the cotton fiber yarn is used as the weft, and the yarn is woven through a weaving machine to obtain a grey cloth;

[0074] Step 2: Place the blank in a dryer for drying and shaping, set the drying temperature to 80°C, and obtain the blank after drying and shaping;

[0075] Step 3: Add 1.5 g of antioxidant 168, 3 g of sodium dodecylbenzene sulfonate, 10 g of silicone oil and 50 g of water into a mixer, turn on the heating, control the temperature to 45°C, keep warm and stir for 4 hours to obtain a finishing liquid;

[0076] Step 4: Place the dried and shaped blank in the finishing liquid, with a bath ratio of 1:40, and perform padding finishing at 45°C for 1 hour, and then dry it at 75°C for 9 hours to obtain the fabric.

[0077] Performance Testing

[0078] The fabrics prepared in Examples 1 to 3 of the present invention and Comparative Examples 1 to 3 were made into samples that met the test specifications. The antibacterial performance of the samples was tested according to GB / T 20944.3-2008 "Evaluation of Antibacterial Properties of Textiles Part 3: Oscillation Method", and the test bacteria was Escherichia coli; the air permeability of the samples was tested according to GB / T 5453-1997 "Determination of Air Permeability of Textile Fabrics"; the water absorption performance of the samples was tested according to GB / T 21655.1-2023 "Evaluation of Moisture Absorption and Quick-drying Properties of Textiles Part 1: Single Item Combined Test Method", and the water absorption rate was high, indicating that the hygroscopicity of the fabric was good. The specific test results are shown in Table 1:

[0079] Table 1 - Performance Test

[0080] Antibacterial rate (%) Air permeability (mm / s) Water absorption (%) Example 1 99.0 620.9 150.2 Example 2 99.5 626.2 158.6 Example 3 99.2 623.1 154.4 Comparative Example 1 90.1 351.0 118.3 Comparative Example 2 67.4 619.5 148.7 Comparative Example 3 63.5 346.5 115.9

[0081] From the test results in Table 1, it can be seen that the samples prepared in Examples 1 to 3 have good antibacterial properties, hygroscopic properties and air permeability; in the sample prepared in Comparative Example 1, zinc pyrithione is used to replace the antibacterial aerogel. Compared with the examples, the hygroscopic properties and air permeability of the sample are poor, and the antibacterial performance is general; in the sample prepared in Comparative Example 2, modified sodium alginate aerogel is used to replace the antibacterial aerogel. Compared with the examples, the antibacterial performance of the sample is poor; in the sample prepared in Comparative Example 3, no antibacterial aerogel is added, so the antibacterial performance, hygroscopic performance and air permeability of the sample are the worst.

[0082] The above contents are merely examples and explanations of the concept of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A method for preparing a moisture-absorbing and breathable fabric, characterized in that: The following steps are involved: Step 1: Spandex fiber and cotton fiber are respectively spun into yarns through a spinning machine to obtain spandex fiber yarn and cotton fiber yarn, and the spandex fiber yarn is used as the warp and the cotton fiber yarn is used as the weft, and the yarn is woven through a weaving machine to obtain a grey cloth; Step 2: Place the blank in a dryer for drying and shaping, set the drying temperature to 75-85°C, and obtain the blank after drying and shaping; Step 3: placing the dried and shaped blank in an antibacterial finishing liquid for padding and finishing, and obtaining the fabric after drying; The antibacterial finishing liquid comprises the following raw materials in parts by weight: 4 to 8 parts of antibacterial aerogel, 1 to 2 parts of antioxidant, 2 to 4 parts of surfactant, 8 to 12 parts of silicone oil and 40 to 60 parts of water.

2. The method for preparing a moisture-absorbing and breathable fabric according to claim 1, characterized in that: The preparation method of the antibacterial finishing liquid comprises the following steps: Add antibacterial aerogel, antioxidant, surfactant, silicone oil and water into a mixer, turn on the heating, control the temperature to 40-50° C., keep warm and stir for 3-5 hours to obtain an antibacterial finishing liquid.

3. The method for preparing a moisture-absorbing and breathable fabric according to claim 2, characterized in that: The preparation method of the antibacterial aerogel comprises the following steps: S1: Sodium alginate and dimethyl sulfoxide are stirred and mixed to form a uniform solution, and then diisocyanate monomer and tin catalyst are added to the solution. After the addition is completed, the system temperature is raised to 65-75° C. under stirring conditions, and the temperature is kept for 4-6 hours. The solvent is removed by reduced pressure distillation to obtain modified sodium alginate; S2: Add modified sodium alginate to deionized water, stir and mix, then add zinc salt, stir for 3 to 5 hours at a temperature of 60 to 80° C., and discharge to obtain an intermediate material; S3: Add sodium pyrithione to the dimethyl sulfoxide solution, stir mechanically to form a uniform liquid, use hydrochloric acid to adjust the pH value of the solution, and then add the intermediate material to the liquid. After the addition is completed, increase the temperature to 60-70°C, stir for 2-4 hours, collect the product, and obtain the antibacterial aerogel after freeze-drying.

4. The method for preparing a moisture-absorbing and breathable fabric according to claim 3, characterized in that: In step S1, the diisocyanate monomer is any one of isophorone diisocyanate, hexamethylene diisocyanate or toluene-2,4-diisocyanate.

5. The method for preparing a moisture-absorbing and breathable fabric according to claim 3, characterized in that: In step S1, the tin catalyst is any one of dibutyltin didodecylsulfide, stannous octoate or dibutyltin dilaurate.

6. The method for preparing a moisture-absorbing and breathable fabric according to claim 3, characterized in that: In step S2, the zinc salt is any one of zinc nitrate, zinc chloride or zinc sulfate.

7. The method for preparing a moisture-absorbing and breathable fabric according to claim 3, characterized in that: In step S3, the freeze-drying treatment is as follows: inject the product into a mold, let it stand until it gels, then place the mold in a temperature environment of -15 to -25°C for storage for 4 to 8 hours, and then transfer it to a freeze dryer for freeze-drying treatment in a temperature environment of -45 to -55°C for 18 to 24 hours.

8. The method for preparing a moisture-absorbing and breathable fabric according to claim 2, characterized in that: The antioxidant is any one of antioxidant 168, antioxidant 1076 or antioxidant 2246.

9. The method for preparing a moisture-absorbing and breathable fabric according to claim 1, characterized in that: In step three, the padding finishing temperature is 40-50° C. and the time is 0.5-1.5 h.

10. A moisture-absorbing and breathable fabric, characterized in that: The method is as claimed in claim 1.

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