Preparation method of quick-dry breathable cashmere and wool textile fabric

Abstract

The invention discloses a preparation method of a quick-dry breathable cashmere and wool textile fabric in the technical field of textile fabrics, and the preparation method comprises the following steps: firstly, performing first functional finishing on the cashmere and wool textile fabric by using amino acid finishing liquid; then, gradually dropwise adding methyl methacrylate into deionized water to obtain an emulsion, putting the cashmere and wool textile fabric subjected to the first-time functional finishing into the emulsion, adjusting the pH value to 3-4, then adding a bacterial cellulose solution under a heating condition, fully stirring, adding an initiator by several times, and performing uniform stirring to obtain a second-time functional finishing solution; and performing secondary functional finishing to obtain the quick-dry and breathable cashmere and wool textile fabric. The antibacterial performance of the fabric is improved, the moisture absorption, quick drying and air permeability of the fabric are guaranteed, the color of the fabric is enriched, the K / S value can reach 5.5 or above, the fabric has good color fastness to washing and color fastness to rubbing, and the overall wearability of the fabric is improved.

Description

Technical Field

[0001] This invention relates to the field of textile fabric technology, specifically to a method for preparing a quick-drying and breathable cashmere and wool textile fabric. Background Technology

[0002] Cashmere fiber is favored by consumers for its fineness, softness, warmth, natural color, and elasticity. However, fabrics made from pure cashmere are expensive, limiting their application to high-end clothing fabrics. Currently, blending cashmere fiber with wool fiber can reduce the fabric's weaving cost and improve its market competitiveness.

[0003] Wool fiber is a natural protein fiber mainly composed of keratin, with a complex chemical composition and structure. It is loved for its abundant sources, excellent elasticity, warmth retention, moisture absorption and release properties, and soft texture. However, it also provides moisture and nutrients for bacterial growth, resulting in poor antibacterial properties. To address this issue, improving the quick-drying properties of cashmere / wool fabrics is one effective way to solve the problem of poor antibacterial properties, while also ensuring the moisture absorption properties of cashmere / wool fabrics.

[0004] Currently, the main approach to improving the functionality of fabrics is through finishing processes, which involve loading functional films or various functional finishing agents to impart special functions to the fabric. However, most of these processes impair the breathability of the fabric, thus hindering the improvement of its performance. In response, this invention proposes a method for preparing quick-drying and breathable cashmere and wool textile fabrics. Summary of the Invention

[0005] The purpose of this invention is to provide a method for preparing quick-drying and breathable cashmere and wool textile fabrics in order to solve the problems of the prior art.

[0006] The present invention achieves the above objectives through the following technical solutions: In a first aspect, the present invention provides a method for preparing a quick-drying and breathable cashmere and wool textile fabric, comprising the following steps: (1) Dissolve 1-vinyl-3-aminopropylimidazolium bromide in deionized water and prepare 1-vinyl-3-aminopropylimidazolium hydroxide by anion exchange resin. Then, add an equal amount of amino acid aqueous solution, stir at room temperature, and remove water under heating conditions to obtain amino acid finishing solution. (2) The cashmere and wool textile fabric is impregnated with amino acid finishing solution for the first functional finishing, and then dried for later use. (3) Methyl methacrylate is gradually added dropwise to deionized water to obtain an emulsion. The cashmere and wool textile fabric treated in step (2) is placed into the emulsion, the pH is adjusted to 3-4, and then bacterial cellulose solution is added under heating conditions. After stirring thoroughly, the initiator is added in batches for the second functional finishing.

[0007] As a further technical solution of the present invention, in step (1), the amino acid is selected from any one of L-phenylalanine, serine, and glycine.

[0008] As a further technical solution of the present invention, in step (2), the mass concentration of the amino acid finishing solution is 40-60g / L, the liquid rolling rate is 70-90%, the increase in cashmere and wool textile fabric is 4-6%, and the drying treatment is carried out at 100-120℃.

[0009] As a further technical solution of the present invention, in step (3), the preparation method of bacterial cellulose solution is as follows: bacterial cellulose powder is dissolved in a pre-cooled alkaline solution containing urea at -20℃ to obtain bacterial cellulose solution, wherein the mass percentage of bacterial cellulose in the bacterial cellulose solution is 2-4%.

[0010] As a further technical solution of the present invention, in step (3), the concentration of the emulsion is 10-20wt%.

[0011] As a further technical solution of the present invention, in step (3), the volume ratio of the emulsion to the bacterial cellulose solution is 4-8:1.

[0012] As a further technical solution of the present invention, in step (3), the initiator is at least one of ammonium persulfate and potassium persulfate, and the amount of initiator added is 1-3% of the mass of methyl methacrylate.

[0013] As a further technical solution of the present invention, the cashmere and wool textile fabric is woven from a blend of wool fiber and cashmere fiber as warp and weft yarns, wherein the warp yarn weaving density is 100-125 yarns / cm and the weft yarn weaving density is 85-95 yarns / cm.

[0014] As a further technical solution of the present invention, in step (3), the mass-volume ratio of cashmere wool textile fabric to emulsion is 30-40g:1L.

[0015] In a second aspect, the present invention also provides a quick-drying and breathable cashmere and wool textile fabric prepared by the preparation method described in any one of the above claims.

[0016] The beneficial effects of this invention are as follows: (1) In this invention, 1-vinyl-3-aminopropylimidazolium bromide is dissolved in deionized water, and 1-vinyl-3-aminopropylimidazolium hydroxide is prepared by anion exchange resin. Then, an amino acid aqueous solution is added to prepare an amino acid finishing solution. The amino acid finishing solution is used to perform the first functional finishing on cashmere and wool textile fabric, so that the moisture absorption, quick-drying and breathability of the fabric are effectively improved.

[0017] (2) In this invention, methyl methacrylate is gradually added dropwise to deionized water to obtain an emulsion. The cashmere and wool textile fabric after the first functional treatment is placed in the emulsion and a bacterial cellulose solution is added. Crosslinking is initiated by an initiator, so that the bacterial cellulose is crosslinked in the structure of the cashmere and wool textile fabric, thereby improving the antibacterial properties of the fabric while ensuring the moisture absorption, quick-drying and breathability of the fabric. (3) The cashmere and wool textile fabrics obtained by the preparation method of the present invention also have richer colors, the K / S value can reach more than 5.5, and have good wash fastness and rubbing fastness, which improves the overall performance of the fabric and provides a theoretical basis for expanding the application field of cashmere and wool textile fabrics, thus effectively improving the application prospects of cashmere and wool textile fabrics. Detailed Implementation

[0018] The present application will now be described in further detail. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0019] I. Materials and Methods In the following examples, bacterial cellulose BC was obtained commercially from Shenzhen Qihong New Materials, and L-phenylalanine, serine, and glycine were obtained commercially from Shenzhen Lefu Biotechnology.

[0020] The preparation method of 1-vinyl-3-aminopropylimidazolium bromide is as follows: Weigh 1-vinylimidazole and 3-bromopropylamine hydrobromide in a molar ratio of 1:1 and dissolve them in DMSO. Under nitrogen protection at 70°C, stir the mixture for 24 h. After the reaction is complete, add ethyl acetate and anhydrous ethanol to precipitate the product. Wash repeatedly at least 5 times, allow the precipitate to stand until the supernatant is clear and transparent, and then vacuum dry the precipitate at 60°C for 3 h to obtain the final product.

[0021] The bacterial cellulose solution contains 2-4% bacterial cellulose by mass, preferably 2% in the following examples. The preparation method is as follows: 2g of bacterial cellulose powder is added to a NaOH / urea solution pre-cooled at 4°C (the NaOH / urea solution system is W...). NaOH:W 尿素 :W 蒸馏水 =7:12:81); then the beaker was placed at -8℃ to dissolve, thus forming a bacterial cellulose solution with a mass fraction of 2%.

[0022] Cashmere and wool textile fabrics are woven from a blend of wool and cashmere fibers as warp and weft yarns. The blending ratio of wool and cashmere fibers is 2:1, the fineness is 25 tex, the warp yarn weaving density is 100-125 threads / cm, and the weft yarn weaving density is 85-95 threads / cm. In the following embodiments, the warp yarn weaving density is preferably 100 threads / cm, and the weft yarn weaving density is preferably 95 threads / cm, but the present invention is not limited thereto.

[0023] In the following examples, unless otherwise specified, all methods can be performed using conventional methods, and the materials and reagents used can be obtained commercially unless otherwise specified. II. Specific Implementation Methods Example 1: Preparation of Amino Acid Finishing Solution 1-Vinyl-3-aminopropylimidazolium bromide was dissolved in deionized water, and 1-vinyl-3-aminopropylimidazolium hydroxide was prepared by anion exchange resin. Then, an equal amount of amino acid aqueous solution was added, and the mixture was stirred at room temperature for 12 hours to obtain an amino acid finishing solution. The amino acid type was L-phenylalanine. The prepared amino acid finishing solution was denoted as amino acid finishing solution A.

[0025] Example 2: First Functional Setup Based on Example 1, cashmere and wool textile fabrics are impregnated with an amino acid finishing solution for the first functional finishing process, dried, and set aside. The mass concentration of the amino acid finishing solution is 40-60 g / L, the pulping rate is 70-90%, the increase in cashmere and wool textile fabric volume is 4-6%, and the fabric is dried at 100-120°C. In this example, the preferred mass concentration of the amino acid finishing solution is 50 g / L, the pulping rate is 80%, the increase in cashmere and wool textile fabric volume is 5%, and the fabric is dried at 100°C.

[0026] Example 3, Second Functional Reorganization Based on Example 2, methyl methacrylate was gradually added dropwise to deionized water to obtain an emulsion. The cashmere and wool textile fabric after the first functional treatment was placed in the emulsion, the concentration of which was 10 wt%. The pH was adjusted to 3-4 with acid, and the mass-to-volume ratio of cashmere and wool textile fabric to emulsion was 40 g: 1 L. Then, under the heating condition of 80°C water bath, bacterial cellulose solution was added. After stirring thoroughly at 200 r / min, the initiator was added in 3 portions. The amount of initiator added was 1-3% of the mass of methyl methacrylate, preferably 2% in this example. The initiator can be at least one of ammonium persulfate and potassium persulfate. In this example, ammonium persulfate was specifically selected. The second functional treatment was completed after 2 hours, and a quick-drying and breathable cashmere and wool textile fabric was obtained. The volume ratio of emulsion to bacterial cellulose solution was 4:1.

[0027] Example 4: Effect of amino acid finishing solution on the properties of cashmere and wool textile fabrics The amino acid types in Example 1 were adjusted to serine and glycine, and the resulting amino acid finishing solution was denoted as amino acid finishing solution BC.

[0028] The cashmere and wool textile fabric was treated with amino acid finishing solution AC according to Example 2 for the first functional finishing, and then according to Example 3 for the second functional finishing to obtain cashmere and wool textile fabric AC.

[0029] Example 5: Investigating the effect of the volume ratio of emulsion to bacterial cellulose solution on the properties of cashmere and wool textiles. Based on Examples 1-3, during the second functional finishing of Example 3, the volumes of the emulsion and bacterial cellulose solution were adjusted to 6:1 and 8:1 respectively to obtain cashmere and wool textile fabric DE.

[0030] Comparative Example 1 The difference from Example 3 is that methyl methacrylate was gradually added dropwise to deionized water to obtain an emulsion. The cashmere and wool textile fabric was placed in the emulsion, the concentration of which was 10 wt%. The pH was adjusted to 3-4 with acid. The mass-volume ratio of the cashmere and wool textile fabric to the emulsion was 40 g: 1 L. Then, under the conditions of heating in an 80°C water bath and stirring thoroughly at 200 r / min, ammonium persulfate was added in three portions, with the amount added being 2% of the mass of methyl methacrylate. After finishing for 2 hours, a second functional finishing was performed. The obtained cashmere and wool textile fabric was denoted as Cashmere and Wool Textile Fabric F.

[0031] Comparative Example 2 The cashmere and wool textile fabric was treated with amino acid finishing solution A according to Example 2, without performing a second finishing process. The resulting cashmere and wool textile fabric is denoted as cashmere and wool textile fabric G.

[0032] Comparative Example 3 Without using amino acid finishing solution A to perform the first functional finishing on the cashmere and wool textile fabric, the cashmere and wool textile fabric raw material is directly subjected to the second functional finishing according to Example 3 to obtain the cashmere and wool textile fabric, which is denoted as cashmere and wool textile fabric H.

[0033] Comparative Example 4 The commercially available fabric moisture-wicking finishing agent XS-002 was used instead of the amino acid finishing liquid for the first functional finishing, and then the second functional finishing was carried out according to Example 3 to obtain a cashmere wool textile fabric, which is denoted as cashmere wool textile fabric I.

[0034] In addition, untreated cashmere and wool textile fabrics were used as a blank control group.

[0035] Verification test 1. Quick-drying and breathable performance test (1) Moisture absorption and quick-drying test Prepare fabric test samples with a length of 20cm and a width of 20cm. Condition the samples under standard atmospheric conditions (temperature 20±2℃, relative humidity 65±4%) for at least 4 hours. Test the moisture absorption and quick-drying properties of textiles according to GB / T 21655.1-2008. Perform 3 replicates for each fabric group and take the average value of the results.

[0036] (2) Air permeability test The air permeability of various woven fabrics was tested in accordance with the national standard (GB / T5453-1997 Determination of Air Permeability of Fabrics). The specific test procedure was as follows: a fabric test sample was prepared with a length of 20cm and a width of 20cm. The sample was conditioned under standard atmospheric conditions (temperature 20±2℃, relative humidity 65±4%) for at least 4 hours. The fabric test sample was tested 10 times at different parts using a YG461G type fully automatic fabric air permeability meter. The specific experimental parameters were set as follows: ambient temperature 25℃, relative humidity 60%, pressure difference 100Pa, and nozzle diameter 0.8m. The average value was taken as the final air permeability data.

[0037] The results are shown in Table 1.

[0038] Table 1. Statistical Analysis of Test Results As can be seen from Table 1, A comparison of cashmere and wool textile fabric AC and cashmere and wool textile fabric I shows that the use of amino acid finishing solution helps to improve the moisture absorption, quick-drying and breathability of the fabric. The difference between cashmere and wool textile fabric AC lies in the different amino acid aqueous solutions used. The fabric obtained by using amino acid finishing solution prepared with serine aqueous solution has better moisture absorption, quick-drying and breathability than the fabric prepared with L-phenylalanine and glycine. A comparison of cashmere and wool textile fabrics DE and F shows that the addition of bacterial cellulose has a certain impact on the moisture absorption, quick-drying properties and breathability of the fabrics, but it is not significant. Cashmere and wool textile fabric G has not undergone a second functional finishing process. As can be seen from the data in the table, the fabric's moisture absorption, quick-drying properties, and breathability have decreased.

[0039] Cashmere and wool textile fabric H did not undergo the first functional finishing process. As can be seen from the data in the table, the fabric's moisture absorption, quick-drying properties and breathability decreased significantly. This indicates that the use of amino acid finishing solution for fabric functional finishing is a key factor affecting its moisture absorption, quick-drying properties and breathability.

[0040] 2. Antibacterial performance test Furthermore, the fabric samples were tested according to GB / T 20944.2-2007 "Evaluation of antibacterial properties of textiles - Part 2: Absorption method". The test bacteria were Escherichia coli 8099, Staphylococcus aureus ATCC No. 6538, and Candida albicans ATCC No. 10231. According to the standard, each fabric sample was cut into 20mm×20mm pieces and subjected to antibacterial testing after 50 washes. Each fabric group was tested in triplicate, and the average value was taken. The results are shown in Table 2.

[0041] Table 2. Statistics of Antibacterial Test Results As can be seen from Table 2, A comparison of cashmere and wool textile fabric AC and cashmere and wool textile fabric I shows that the use of amino acid finishing solution affects the antibacterial properties of the fabric. The difference between cashmere and wool textile fabric AC lies in the different amino acid aqueous solutions used, making the three equally effective in improving the antibacterial properties of the fabric. A comparison of cashmere and wool textile fabrics DE and F shows that the addition of bacterial cellulose has a significant impact on the antibacterial properties of the fabrics, and the antibacterial properties increase with the increase of the amount of bacterial cellulose added. Cashmere and wool textile fabric G did not undergo a second functional finishing process. As can be seen from the data in the table, the antibacterial properties of the fabric decreased significantly, indicating that the second functional finishing process is a key factor affecting its antibacterial properties.

[0042] Cashmere and wool textile fabric H did not undergo the first functional finishing process. As can be seen from the data in the table, the antibacterial properties of the fabric have decreased, indicating that the first functional finishing process has an impact on the antibacterial properties of the fabric.

[0043] 3. Testing of staining performance The cashmere and wool textile fabric AG and the original cashmere and wool textile fabric were dyed using the direct dyeing method. After dyeing, the fabric was washed with water and dried. The amount of reactive black KN-B (dye index number CIReactive Black 5) was 4% owf, the liquor ratio was 1:30, the dyeing time was 60 min, the dyeing temperature was 100℃, the dyeing pH was 7, and the fabric was washed with water and dried after dyeing.

[0044] After the dyed fabrics were equilibrated under standard conditions of temperature (21±1℃) and humidity (65±2%) for 24 hours, the K / S value of the dyed fabrics was determined using a Color Eye 7000A computer colorimeter (light source D65, standard observer viewing angle 10°, including specular reflection and ultraviolet region). A 17mm orifice diameter was selected. The sample was folded four times, and the measurement points were randomly changed to measure each fabric four times. The colorimeter system calculated the average value and displayed the result.

[0045] Then, the tests were conducted according to standard GB / T 3921-2008 "Textiles - Tests for color fastness to washing - Color fastness to soaping". The tests were also conducted according to standard GB / T 3920-2008 "Textiles - Tests for color fastness to rubbing - Color fastness to rubbing".

[0046] The results are shown in Table 3.

[0047] Table 3. Results of dyeing performance test As can be seen from Table 3, A comparison of cashmere and wool textile fabric AC and cashmere and wool textile fabric I shows that the use of amino acid finishing solution affects the dyeing performance of the fabric. The K / S value of the fabric treated with amino acid finishing solution can reach above 5.5. The difference between cashmere and wool textile fabric AC lies in the different amino acid aqueous solutions used. The K / S value of the fabric obtained by using amino acid finishing solution prepared with serine aqueous solution is better than that obtained by using L-phenylalanine and glycine. Comparing cashmere and wool textile fabrics DE and F, it can be seen that the addition of bacterial cellulose has no significant effect on the K / S value of the fabrics, but it has a significant effect on the color fastness of the surface, which increases with the increase of the amount of bacterial cellulose added. Cashmere and wool textile fabric G has not undergone a second functional finishing process. As can be seen from the data in the table, the dyeing performance of the fabric has decreased, and the K / S value of cashmere and wool textile fabric G is lower than that of cashmere and wool textile fabric A.

[0048] Cashmere and wool textile fabric H did not undergo the first functional finishing process. As can be seen from the data in the table, the dyeing performance of the fabric decreased, indicating that the first functional finishing process has an impact on the dyeing performance of the fabric.

[0049] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A method for preparing a quick-drying and breathable cashmere and wool textile fabric, characterized in that, Includes the following steps: (1) Dissolve 1-vinyl-3-aminopropylimidazolium bromide in deionized water and prepare 1-vinyl-3-aminopropylimidazolium hydroxide by anion exchange resin. Then, add an equal amount of amino acid aqueous solution and stir at room temperature to obtain amino acid finishing solution. (2) The cashmere and wool textile fabric is impregnated with amino acid finishing solution for the first functional finishing, dried and ready for use; (3) Methyl methacrylate is gradually added to deionized water to obtain an emulsion. The cashmere and wool textile fabric treated in step (2) is placed into the emulsion, the pH is adjusted to 3-4, and then bacterial cellulose solution is added under heating conditions. After stirring thoroughly, the initiator is added in batches for a second functional finishing process to obtain a quick-drying and breathable cashmere and wool textile fabric.

2. The method for preparing a quick-drying and breathable cashmere and wool textile fabric according to claim 1, characterized in that, In step (1), the amino acid is selected from any one of L-phenylalanine, serine, and glycine.

3. The method for preparing a quick-drying and breathable cashmere and wool textile fabric according to claim 1, characterized in that, In step (2), the mass concentration of the amino acid finishing solution is 40-60 g / L, the liquid-pinching rate is 70-90%, the increase in cashmere and wool textile fabric is 4-6%, and the drying treatment is carried out at 100-120℃.

4. The method for preparing a quick-drying and breathable cashmere and wool textile fabric according to claim 1, characterized in that, In step (3), the bacterial cellulose solution is prepared by dissolving bacterial cellulose powder in a pre-cooled alkaline solution containing urea at -20°C to obtain a bacterial cellulose solution, wherein the mass percentage of bacterial cellulose in the bacterial cellulose solution is 2-4%.

5. The method for preparing a quick-drying and breathable cashmere and wool textile fabric according to claim 1, characterized in that, In step (3), the concentration of the emulsion is 10-20 wt%.

6. The method for preparing a quick-drying and breathable cashmere and wool textile fabric according to claim 1, characterized in that, In step (3), the volume ratio of the emulsion to the bacterial cellulose solution is 4-8:

1.

7. The method for preparing a quick-drying and breathable cashmere and wool textile fabric according to claim 1, characterized in that, In step (3), the initiator is at least one of ammonium persulfate and potassium persulfate, and the amount of initiator added is 1-3% of the mass of methyl methacrylate.

8. The method for preparing a quick-drying and breathable cashmere and wool textile fabric according to claim 1, characterized in that, The cashmere and wool textile fabric is made by weaving a blend of wool and cashmere fibers as warp and weft yarns. The warp yarn weaving density is 100-125 yarns / cm, and the weft yarn weaving density is 85-95 yarns / cm.

9. The method for preparing a quick-drying and breathable cashmere and wool textile fabric according to claim 1, characterized in that, In step (3), the mass-to-volume ratio of cashmere wool textile fabric to emulsion is 30-40g:1L.

10. A quick-drying and breathable cashmere and wool textile fabric prepared by the preparation method according to any one of claims 1-9.

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