A soft and comfortable apparel fabric

Abstract

The present application relates to the technical field of clothing fabric, and discloses a soft and comfortable clothing fabric, which is formed by blending modified cotton fibers and chinlon fibers to form warp threads, blending modal fibers and spandex fibers to form weft threads, feeding the warp threads and the weft threads into a weaving machine to weave gray cloth, and then placing the gray cloth in polycaprolactone hydrogel for pressure impregnation and drying, so that the antibacterial performance of the fabric is effectively improved, the problem of bacterial breeding caused by excessive sweat discharge and sebum shedding is avoided, the cleanliness of the fabric is ensured, the possibility of odor generation is effectively reduced, the stimulation to human skin is reduced, and the comfort is improved; the use of polycaprolactone hydrogel for impregnation finishing of the gray cloth can increase the specific surface area of the hydrogel due to swelling after absorbing sweat, accelerate the evaporation rate of moisture, play a role in moisture absorption and sweat release, and further improve the comfort.

Description

Technical Field

[0001] This invention relates to the field of clothing fabric technology, specifically to a soft and comfortable clothing fabric. Background Technology

[0002] With societal development, people's focus on clothing has shifted beyond aesthetics to prioritize comfort. The comfort of clothing largely depends on the type of fabric. Fabrics can be categorized by chemical composition into natural fibers and synthetic fibers. Natural fibers primarily include cotton, wool, linen, and silk, while synthetic fibers mainly include polyester, acrylic, nylon, and spandex. Cotton and modal fibers are favored for their softness, while spandex offers good elasticity, providing a better fit and comfort. Nylon, with its lightweight, elasticity, and high abrasion resistance, is also widely used. Patent application CN202110798823.3 discloses a blended fabric of cotton, spandex, and polyester fibers and its production method. The resulting blended fabric is naturally environmentally friendly, moisture-wicking, warm, fluffy, and resilient, making it ideal for children's clothing.

[0003] However, in the hot summer, people working indoors can cool down by using air conditioning and eating cold drinks. But people working outdoors, such as sanitation workers and construction workers, usually cannot cool off in time. They are already drenched in sweat while working, causing their clothes to become soaked. Soaked clothes stick to the skin and cause a sticky and uncomfortable feeling. At the same time, the sweat and sebum excreted by the body provide rich nutrients for the reproduction of bacteria, causing bacteria to multiply in large numbers. This not only makes the clothes smell bad, but also irritates the skin and causes itching, thus causing discomfort. The invention patent with application number CN201811359226.5 discloses an antibacterial fabric and its production process. By adding an antibacterial agent to the finishing solution and then immersing the fabric in the finishing solution, the fabric can produce an antibacterial effect. However, summer clothes need to be washed frequently, and the simple physical immersion process can easily cause the antibacterial agent adhering to the fabric to fall off during long-term washing, thereby reducing the antibacterial performance of the fabric. Therefore, developing a clothing fabric with good antibacterial and moisture-wicking properties and washability is of great significance for improving the comfort of clothing fabrics. Summary of the Invention

[0004] The purpose of this invention is to provide a soft and comfortable clothing fabric, and to solve the following technical problems:

[0005] (1) It solved the problem of poor antibacterial and wash-resistant properties of clothing fabrics;

[0006] (2) It solves the problem of poor moisture absorption and perspiration wicking effect of clothing fabrics.

[0007] The objective of this invention can be achieved through the following technical solutions:

[0008] A soft and comfortable clothing fabric, the method for preparing the clothing fabric includes the following steps:

[0009] Step 1: Blend modified cotton fiber and nylon fiber to form warp yarn, and blend modal fiber and spandex fiber to form weft yarn;

[0010] Step 2: Feed the warp and weft threads into the weaving machine to weave and form the greige fabric;

[0011] Step 3: Impregnate the fabric with polycaprolactone hydrogel under pressure;

[0012] Step 4: Place the impregnated and finished fabric in an oven and dry it at a temperature of 90-100℃ for 1-2 hours to obtain a soft and comfortable garment fabric.

[0013] Furthermore, in step one, the method for preparing the modified cotton fiber includes the following steps:

[0014] A: Dissolve silane coupling agent KH-560 in an 80-90% (v / v) aqueous ethanol solution, stir until homogeneous, then add dilute hydrochloric acid to adjust the pH to 4-5, stir for 0.5-1 h to obtain silane coupling agent hydrolysate.

[0015] B: Soak cotton fibers in a 10-20% sodium hydroxide solution. After soaking, filter, wash, and dry them. Then add them to a silane coupling agent hydrolysate and react at 60-70℃ for 2-3 hours. After the reaction is complete, filter to separate the solid sample, wash, and dry it to obtain pretreated cotton fibers.

[0016] C: Mix the pretreated cotton fibers with deionized water, add arginine, stir evenly, and react at 50-60℃ for 4-5 hours. After the reaction is complete, filter to separate the solid sample, wash and dry to obtain modified cotton fibers.

[0017] Furthermore, in step B, the cotton fiber has a length of 25-30 mm and a diameter of 18-20 μm.

[0018] Furthermore, in step B, the soaking time of the cotton fibers is 30-40 minutes, and the drying temperature is 50-60℃.

[0019] Through the above technical solution, after the cotton fiber is alkalized, the hydroxyl groups blocked on its molecular chain are activated. The surface of the cotton fiber is modified by using the silane coupling agent KH-560, and the epoxy groups are modified on the surface of the cotton fiber to effectively improve the surface activity of the cotton fiber. Then, a ring-opening addition reaction is carried out with the active amino group in the arginine structure to introduce the guanidine group with antibacterial effect, thus obtaining the modified cotton fiber.

[0020] Furthermore, in step three, the pressure of the pressure impregnation is 0.5-0.6 MPa, and the time is 1-2 hours.

[0021] Furthermore, in step four, the preparation method of the polycaprolactone hydrogel includes the following steps:

[0022] ① Add polycaprolactone diol and anhydrous ethanol to the reactor, mix well, raise the temperature to 65-70℃, then add trimethylolpropane triglycidyl ether and catalyst, purge with nitrogen, stir and react for 8-12 hours. After the reaction is complete, remove the solvent by vacuum distillation, wash and vacuum dry to obtain polycaprolactone polymer.

[0023] ② Add the polycaprolactone polymer to deionized water, mix well, and stir for 2-3 hours to obtain polycaprolactone hydrogel.

[0024] Furthermore, the average molecular weight of the polycaprolactone diol is 2000.

[0025] Furthermore, the catalyst is either tetrabutylammonium bromide or tetrabutylammonium chloride.

[0026] Furthermore, the molar ratio of polycaprolactone diol and trimethylolpropane triglycidyl ether is 2:3.

[0027] Through the above technical solution, under the action of catalyst and high temperature, the hydroxyl groups at both ends of the polycaprolactone diol molecular chain can undergo a ring-opening reaction with the epoxy groups in the trimethylolpropane triglycidyl ether structure and produce cross-linking. At the same time, the ring-opening reaction introduces active hydroxyl groups, thus obtaining polycaprolactone hydrogel.

[0028] The beneficial effects of this invention are:

[0029] (1) In this invention, arginine is used to modify cotton fibers for antibacterial purposes, thereby obtaining modified cotton fibers that are used in the preparation of soft and comfortable clothing fabrics. Arginine is a natural antibacterial agent. When used as a functional additive in the preparation of fabrics, it will not cause harm to the human body. When grafted into the structure of cotton fibers, it can effectively improve the antibacterial properties of the fabric, avoid the problem of bacterial growth caused by excessive sweating and sebum shedding, ensure the cleanliness of the fabric, effectively reduce the possibility of odor generation, and also reduce the irritation to human skin and improve comfort.

[0030] (2) The present invention uses polycaprolactone hydrogel to impregnate and treat the fabric to obtain a soft and comfortable clothing fabric. The hydrogel has a porous structure and will expand rapidly after absorbing sweat and deform. On the one hand, it can make the fabric and the skin make point contact, thereby increasing the gap between the fabric and the skin, allowing the air inside the clothes to flow, promoting the evaporation of sweat and reducing the sticky discomfort. On the other hand, the hydrogel expands after absorbing sweat, increasing its specific surface area and accelerating the rate of water evaporation. Water evaporation takes away heat, and heat dissipation also helps to reduce human sweating, forming a virtuous cycle, thereby enabling the fabric to play the role of moisture absorption and perspiration wicking, further improving comfort.

[0031] (3) The present invention uses impregnation finishing to make the carboxyl groups in the modified cotton fiber structure and the active hydroxyl groups in the polycaprolactone hydrogel structure interact to form hydrogen bonds. Compared with the simple physical impregnation process, the hydrogen bonds formed can significantly improve the bonding strength between the modified cotton fiber and the polycaprolactone hydrogel, avoid the antibacterial agent on the surface of the modified cotton fiber from falling off due to repeated washing, thereby enhancing its wash resistance and preventing the fabric from losing its antibacterial properties and moisture-wicking function due to excessive washing, thus maintaining the comfort of the fabric.

[0032] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0033] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 Infrared spectra of cotton fibers and modified cotton fibers in Example 1 of this invention;

[0035] Figure 2 This is a scanning electron microscope image of the polycaprolactone hydrogel in Example 1 of the present invention. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Example 1

[0038] I. Preparation of Modified Cotton Fibers

[0039] A: Dissolve 5g of silane coupling agent KH-560 in 50mL of 80-90% ethanol aqueous solution, stir well, then add dilute hydrochloric acid to adjust the pH to 5, stir for 1h to obtain silane coupling agent hydrolysate.

[0040] B: Soak 3g of cotton fibers with a length of 30mm and a diameter of 20μm in a 10% sodium hydroxide solution for 30min. After soaking, filter, wash, and dry at 60℃. Then add it to 20mL of silane coupling agent hydrolysate and react at 70℃ for 2h. After the reaction is completed, filter to separate the solid sample, wash and dry to obtain pretreated cotton fibers.

[0041] C: Mix 1.5g of pretreated cotton fiber with 20mL of deionized water, then add 2.3g of arginine, stir evenly, and react at 60℃ for 5h. After the reaction is completed, filter to separate the solid sample, wash and dry to obtain modified cotton fiber.

[0042] Dried cotton fibers and modified cotton fibers were ground and mixed with ground potassium bromide. Infrared spectroscopy was performed using a tablet compression method, with a wavenumber scanning range of 4000-500 cm⁻¹. -1 The result is as follows Figure 1 As shown, by Figure 1 It can be seen that, compared to cotton fiber, modified cotton fiber has a length of 3300-3500 cm. -1 Absorption peaks of the amino and imino NH groups in the guanidine group appear at 2850-2950 cm⁻¹. -1 The absorption area of ​​methyl and methylene groups increases, reaching 1728 cm⁻¹. -1 An absorption peak appears at 1204 cm⁻¹ where the C=0 carboxyl group is located. -1 An absorption peak for C-OC appears at 1152 cm⁻¹. -1 The presence of the Si-OC absorption peak is due to the modification of cotton fibers with the silane coupling agent KH-560 and the subsequent grafting of arginine.

[0043] II. Preparation of Polycaprolactone Hydrogel

[0044] ① Add 5g of polycaprolactone diol with an average molecular weight of 2000 and 50mL of anhydrous ethanol to the reactor, mix well, raise the temperature to 70℃, then add 1.13g of trimethylolpropane triglycidyl ether and 0.5g of tetrabutylammonium bromide, purge with nitrogen, stir and react for 12h. After the reaction is complete, remove the solvent by vacuum distillation, wash and vacuum dry to obtain polycaprolactone polymer;

[0045] ② Add 2g of polycaprolactone polymer to 20mL of deionized water, mix well, and stir for 2h to obtain polycaprolactone hydrogel;

[0046] The polycaprolactone hydrogel was analyzed using a TM3030 desktop scanning electron microscope. The results are as follows: Figure 2 As shown, by Figure 2 It can be seen that polycaprolactone hydrogel exhibits a porous structure.

[0047] III. Preparation of Soft and Comfortable Clothing Fabrics

[0048] Step 1: Blend 50 parts by weight of modified cotton fiber and 6 parts by weight of nylon fiber to form the warp, and blend 20 parts by weight of modal fiber and 10 parts by weight of spandex fiber to form the weft.

[0049] Step 2: Feed the warp and weft threads into the weaving machine to weave and form the greige fabric;

[0050] Step 3: Place the fabric into the polycaprolactone hydrogel and impregnate it under pressure of 0.5 MPa for 1 hour;

[0051] Step 4: Place the impregnated and finished fabric in an oven and dry it at 90℃ for 1 hour to obtain a soft and comfortable garment fabric.

[0052] Example 2

[0053] Preparation of soft and comfortable clothing fabrics

[0054] Step 1: Blend 55 parts by weight of modified cotton fiber and 7 parts by weight of nylon fiber to form the warp, and blend 25 parts by weight of modal fiber and 15 parts by weight of spandex fiber to form the weft.

[0055] Step 2: Feed the warp and weft threads into the weaving machine to weave and form the greige fabric;

[0056] Step 3: Place the fabric into the polycaprolactone hydrogel and impregnate it under pressure of 0.55 MPa for 1.5 hours;

[0057] Step 4: Place the impregnated and finished fabric in an oven and dry it at 95℃ for 1.5 hours to obtain a soft and comfortable garment fabric.

[0058] The preparation methods for modified cotton fibers and polycaprolactone hydrogels are the same as in Example 1.

[0059] Example 3

[0060] Preparation of soft and comfortable clothing fabrics

[0061] Step 1: Blend 60 parts by weight of modified cotton fiber and 8 parts by weight of nylon fiber to form the warp, and blend 30 parts by weight of modal fiber and 20 parts by weight of spandex fiber to form the weft.

[0062] Step 2: Feed the warp and weft threads into the weaving machine to weave and form the greige fabric;

[0063] Step 3: Place the fabric into the polycaprolactone hydrogel and impregnate it under pressure of 0.6 MPa for 2 hours;

[0064] Step 4: Place the impregnated and finished fabric in an oven and dry it at 100℃ for 2 hours to obtain a soft and comfortable garment fabric.

[0065] The preparation methods for modified cotton fibers and polycaprolactone hydrogels are the same as in Example 1.

[0066] Comparative Example 1

[0067] Preparation of clothing fabrics

[0068] Step 1: Blend 60 parts by weight of cotton fiber and 8 parts by weight of nylon fiber to form the warp, and blend 30 parts by weight of modal fiber and 20 parts by weight of spandex fiber to form the weft.

[0069] Step 2: Feed the warp and weft threads into the weaving machine to weave and form the greige fabric;

[0070] Step 3: Place the fabric into the polycaprolactone hydrogel and impregnate it under pressure of 0.6 MPa for 2 hours;

[0071] Step 4: Place the impregnated and finished fabric in an oven and dry it at 100℃ for 2 hours to obtain the garment fabric.

[0072] The preparation method of polycaprolactone hydrogel is the same as that in Example 1.

[0073] Comparative Example 2

[0074] Preparation of clothing fabrics

[0075] Step 1: Blend 60 parts by weight of modified cotton fiber and 8 parts by weight of nylon fiber to form the warp, and blend 30 parts by weight of modal fiber and 20 parts by weight of spandex fiber to form the weft.

[0076] Step 2: Feed the warp and weft threads into the weaving machine to weave and form the greige fabric;

[0077] Step 3: Arrange the blanks in an oven and dry them at 100℃ for 2 hours to obtain the garment fabric.

[0078] The preparation method of the modified cotton fiber is the same as that in Example 1.

[0079] Comparative Example 3

[0080] Preparation of clothing fabrics

[0081] Step 1: Blend 60 parts by weight of cotton fiber and 8 parts by weight of nylon fiber to form the warp, and blend 30 parts by weight of modal fiber and 20 parts by weight of spandex fiber to form the weft.

[0082] Step 2: Feed the warp and weft threads into the weaving machine to weave and form the greige fabric;

[0083] Step 3: Arrange the blanks in an oven and dry them at 100℃ for 2 hours to obtain the garment fabric.

[0084] Performance testing

[0085] I. Water Absorption Performance Test

[0086] The clothing fabrics prepared in Examples 1-3 and Comparative Examples 1-3 of this invention were cut into 10cm×10cm samples and dried overnight in a vacuum drying oven until constant weight. The mass X0 (g) before water absorption was accurately weighed. The samples were then soaked in deionized water for 8 hours, and the surface moisture was wiped dry with filter paper. The mass X1 (g) after water absorption was accurately weighed. The water absorption rate W1 was calculated using the formula:

[0087]

[0088] After washing the sample 30 times with water, it was then soaked in deionized water for 8 hours using the same method. The surface of the sample was dried with filter paper, and the mass X2 (g) of the sample after water absorption was accurately weighed. The water absorption rate W2 was calculated using the formula. The test results are shown in the table below:

[0089] Group <![CDATA[Water absorption rate W1 (%)]]> <![CDATA[Water Absorption W2 (%)]]> Example 1 192.4 174.8 Example 2 196.5 177.2 Example 3 193.9 173.6 Comparative Example 1 190.7 84.3 Comparative Example 2 97.2 81.1 Comparative Example 3 93.8 75.4

[0090] As shown in the table above, the clothing fabrics prepared in Examples 1-3 of this invention have a high water absorption rate and good water absorption before washing. After 30 washes, the water absorption rate decreases only slightly, indicating good wash resistance. In contrast, the clothing fabric prepared in Comparative Example 1 has a high water absorption rate and good water absorption before washing, but the water absorption rate decreases significantly after 30 washes. This is because arginine was not used to modify the cotton fibers for antibacterial purposes, thus preventing the introduction of carboxyl groups and hindering the reaction with polycaprolactone hydrogel. Consequently, the wash resistance is poor. The clothing fabrics prepared in Comparative Examples 2 and 3 have very low water absorption rates before and after 30 washes. This is because polycaprolactone hydrogel was not used to impregnate the fabric, resulting in poor water absorption and the inability to form hydrogen bonds, thus also leading to poor wash resistance.

[0091] II. Antibacterial performance test

[0092] The clothing fabrics prepared in Examples 1-3 and Comparative Examples 1-3 of this invention were cut into 10cm × 10cm samples and tested using the agar plate diffusion method. Specifically, 10mL of agar medium was injected into a sterile petri dish, and after it solidified, 0.1mL of Staphylococcus aureus solution (10... 8 The sample (CFU / mL) was evenly spread on agar medium. Then, using tweezers, the sample was placed in the center of the petri dish and pressed evenly until the sample and agar medium were in close contact. The medium was then incubated in a 37°C incubator for 24 hours. The experiment was repeated in triplicate, and the average value was taken. The width Y of the inhibition zone was calculated using the formula:

[0093]

[0094] In the formula, Y is the width of the antibacterial zone (mm); D2 is the diameter of the antibacterial band (mm); and D1 is the diameter of the sample (mm). This formula is used to evaluate the antibacterial properties of soft and comfortable clothing fabrics. The test results are shown in the table below:

[0095] Group Width Y (mm) of the inhibition zone Example 1 12.2 Example 2 12.6 Example 3 12.3 Comparative Example 1 6.7 Comparative Example 2 11.4 Comparative Example 3 5.1

[0096] As can be seen from the data in the table above, the antibacterial rings of the clothing fabrics prepared in Examples 1-3 and Comparative Example 2 of this invention are wider, and have good antibacterial properties due to the addition of antibacterial modified cotton fibers. However, the antibacterial rings of the clothing fabrics prepared in Comparative Example 1 and Comparative Example 3 are narrower, and have poor antibacterial properties because cotton fibers that have not been antibacterial modified have been added.

[0097] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0098] The above description is merely an example and illustration of the concept of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the concept of the invention or exceed the scope defined in the claims, they should all fall within the protection scope of the present invention.

Claims

1. A soft and comfortable clothing fabric, characterized in that, The method for preparing the garment fabric includes the following steps: Step 1: Blend modified cotton fiber and nylon fiber to form warp yarn, and blend modal fiber and spandex fiber to form weft yarn; The method for preparing the modified cotton fiber includes the following steps: A: Dissolve silane coupling agent KH-560 in an 80-90% (v / v) ethanol aqueous solution, stir until homogeneous, then add dilute hydrochloric acid to adjust the pH to 4-5, stir for 0.5-1 h to obtain silane coupling agent hydrolysate. B: Soak cotton fibers in a 10-20% sodium hydroxide solution. After soaking, filter, wash, and dry them. Then add them to a silane coupling agent hydrolysate and react at 60-70℃ for 2-3 hours. After the reaction is complete, filter to separate the solid sample, wash, and dry it to obtain pretreated cotton fibers. C: Mix the pretreated cotton fibers with deionized water, add arginine, stir evenly, and react at 50-60℃ for 4-5 hours. After the reaction is complete, filter to separate the solid sample, wash and dry to obtain modified cotton fibers. Step 2: Feed the warp and weft threads into the weaving machine to weave and form the greige fabric; Step 3: Impregnate the fabric with polycaprolactone hydrogel under pressure; The preparation method of the polycaprolactone hydrogel includes the following steps: ① Add polycaprolactone diol and anhydrous ethanol to the reactor, mix well, raise the temperature to 65-70℃, then add trimethylolpropane triglycidyl ether and catalyst, purge with nitrogen, stir and react for 8-12 hours. After the reaction is complete, remove the solvent by vacuum distillation, wash and vacuum dry to obtain polycaprolactone polymer. ② Add the polycaprolactone polymer to deionized water, mix well, and stir for 2-3 hours to obtain polycaprolactone hydrogel; Step 4: Place the impregnated and finished fabric in an oven and dry it at a temperature of 90-100℃ for 1-2 hours to obtain a soft and comfortable garment fabric.

2. The soft and comfortable clothing fabric according to claim 1, characterized in that, In step B, the cotton fiber has a length of 25-30 mm and a diameter of 18-20 μm.

3. The soft and comfortable clothing fabric according to claim 1, characterized in that, In step B, the cotton fibers are soaked for 30-40 minutes and dried at 50-60°C.

4. The soft and comfortable clothing fabric according to claim 1, characterized in that, In step three, the pressure of the pressure impregnation is 0.5-0.6 MPa, and the time is 1-2 hours.

5. The soft and comfortable clothing fabric according to claim 1, characterized in that, The average molecular weight of the polycaprolactone diol is 2000.

6. The soft and comfortable clothing fabric according to claim 1, characterized in that, The catalyst is either tetrabutylammonium bromide or tetrabutylammonium chloride.

7. The soft and comfortable clothing fabric according to claim 1, characterized in that, The molar ratio of polycaprolactone diol to trimethylolpropane triglycidyl ether is 2:3.

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