Lightweight sun-proof cool nylon fabric and preparation method

Abstract

The present invention relates to a lightweight, sun-proof, cool-feeling nylon fabric and a preparation method thereof, which relates to the fabric field. The preparation method comprises the following steps: subjecting a nylon polymer to a stretching and heat-setting process, then immersing it in a loading liquid containing a silver-loaded antimicrobial agent for ultrasonic treatment, drying it to obtain a fiber, and then finishing it with a cellulose / NMMO aqueous solution before weaving it to obtain the nylon fabric. The present invention uses a silver-loaded antimicrobial agent loaded onto the nylon fiber, effectively increasing the fabric's antimicrobial effect. The snail extract is used as a loading liquid to increase the antimicrobial loading effect and compensate for the adverse effects of the stretching and heat-setting process on the nylon's performance. The extract also has excellent moisturizing properties, locking in moisture and being skin-friendly. Furthermore, the NMMO aqueous solution and the toughness of natural fibers are utilized to increase the nylon fiber's wrinkle resistance. The nylon fabric prepared by the present method is lightweight, sun-proof, and moisture-absorbing, making it suitable for use as a fabric for outdoor clothing in summer.

Description

Technical Field

[0001] The present invention belongs to the technical field of fabrics, and in particular relates to a lightweight sun-proof cool-feeling nylon fabric and a preparation method thereof. Background Art

[0002] Nylon fabrics are durable and durable due to their high abrasion resistance, good elasticity, and resistance to deformation. Compared to traditional cotton and linen fabrics, nylon fabrics are more suitable for sportswear, outdoor equipment, and other products. However, summer clothing fabrics prioritize cooling, sun protection, and moisture absorption and breathability over abrasion resistance. Nylon fabrics, due to their tough texture, lack a lightweight feel and have poor wrinkle resistance. Furthermore, compared to cotton and linen fabrics, nylon fabrics have relatively poor moisture absorption and breathability, resulting in a lack of antibacterial properties and significantly reduced comfort for outdoor wear in the summer. Summary of the Invention

[0003] The purpose of the present invention is to provide a lightweight sun-proof cool nylon fabric and a preparation method in order to solve the above problems.

[0004] The present invention achieves the above-mentioned purpose through the following synthesis process and technical scheme:

[0005] In a first aspect, the present invention provides a method for preparing a lightweight sun-proof cool-feeling nylon fabric, comprising the following steps:

[0006] (1) immersing a nylon polymer in a loading liquid containing a silver-loaded antibacterial agent and performing ultrasonic treatment, and then drying the nylon polymer to obtain a fiber 1, wherein the loading liquid comprises 75 wt% ethanol and a snail extract in a volume ratio of 1:(0.1-0.2);

[0007] (2) The fibers are woven on a loom after being treated with a finishing liquid, a textile roller is heated during weaving, and the fibers are cooled and rolled up after weaving to obtain nylon fabric, wherein the raw materials for preparing the finishing liquid include 35 wt% NMMO aqueous solution and cellulose pulp.

[0008] As a further optimization scheme of the present invention, the stretching and heat setting process in step (1) is specifically as follows: the nylon polymer is carded and then put into a drawing machine for stretching, and after stretching, it is immersed in a polyvinyl pyrrolidone solution to obtain pre-impregnated fibers, and then placed in a setting machine for high-temperature setting, and the fibers are dried after setting to obtain the fibers;

[0009] The stretching speed is 2-5 m / min and the setting temperature is 160-180°C.

[0010] As a further optimization solution of the present invention, the preparation process of the snail extract is specifically as follows:

[0011] The shelled snail tissue is put into boiling water and boiled, and a preservative is added during the boiling process. After boiling until it becomes a thick soup, it is put into a grid mold and frozen into a solid. After the solid is demolded, it is put into a vacuum dryer for drying, and then ground into a grinder to obtain a snail extract.

[0012] As a further optimized solution of the present invention, the preservative is one of sorbic acid and its salts, benzoic acid and its sodium salt.

[0013] As a further optimization solution of the present invention, the ultrasonic treatment time is 15-20 minutes, the ultrasonic power is 100-300W, and the ultrasonic frequency is 20-30KHz.

[0014] As a further optimization scheme of the present invention, the preparation process of the finishing liquid is as follows: cellulose pulp is mixed with a 35wt% NMMO aqueous solution in a mass ratio of (10-15):100, stirred at 100°C and distilled under reduced pressure to remove water to generate a cellulose / NMMO mixed solution.

[0015] As a further optimized solution of the present invention, the cellulose pulp is one of cotton fiber pulp, tea tree fiber pulp, and bamboo fiber pulp.

[0016] As a further optimized solution of the present invention, the cellulose pulp is tea tree fiber pulp.

[0017] As a further optimization solution of the present invention, the heating temperature in step (2) is 160-180°C.

[0018] In a second aspect, the present invention provides a lightweight sun-proof cool-feeling nylon fabric prepared by the above-mentioned preparation method.

[0019] The beneficial effects of the present invention are:

[0020] The present invention uses a silver-loaded antimicrobial agent loaded onto nylon fibers, effectively increasing the antimicrobial effect of the fabric. Using snail extract as a component of the loading solution, the silver-loaded antimicrobial agent is loaded into the nylon fibers. The viscosity of the snail extract increases the interaction between the fibers, resulting in stronger adhesion and better stability of the silver-loaded antimicrobial agent. Furthermore, the snail extract has excellent moisturizing properties, locks in moisture and is skin-friendly, making it more comfortable to wear and increasing the brightness of the fabric. Furthermore, the present invention uses a cellulose / NMMO mixed solution to finish the nylon fibers, utilizing the NMMO aqueous solution and the toughness of the natural fibers to increase the wrinkle resistance of the nylon fibers. It has also been found that the cellulose / NMMO mixed solution can also increase the UV resistance of the nylon fabric. Based on various test results, the nylon fabric prepared by the preparation method of the present invention has the functions of lightness, sun protection, and moisture absorption, making it suitable for use as a fabric for outdoor clothing in summer. DETAILED DESCRIPTION

[0021] The present application is described in further detail below. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technicians in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0022] 1. Materials

[0023] (1) Silver-loaded antibacterial agent, purchased from Hangzhou Hengge Nanotechnology Co., Ltd.

[0024] (2) The nylon polymer was PA6 fiber, purchased from Ningbo Shijin Plastic Co., Ltd.

[0025] (3) The snail extract preparation process is as follows: farmed snails (purchased from Jiaxing Hongfu Snail Farming Co., Ltd.) are washed with a mixture of edible oil and water to completely remove impurities, and then shelled by a machine. The shelled snail tissue is placed in boiling water at 100°C and boiled until the boiling water covers the snail tissue. During the boiling process, a preservative, potassium sorbate or sodium benzoate (potassium sorbate is used in this embodiment) is added. After boiling until it becomes a thick soup, it is placed in a grid mold and frozen in a freezer at -80--50°C to form a solid naturally. After the solid is demolded, it is placed in a vacuum dryer for drying at a vacuum degree of 0.1-0.5 mbar for 24-48 hours. The snail extract is then ground in a grinder to obtain the snail extract.

[0026] (4) The specific preparation process of cellulose pulp is as follows: cotton, tea tree (including leaves) or bamboo are used as raw materials, the raw materials are crushed to obtain powder, mixed with water to obtain pulp, boiled and stirred, and then sodium hydroxide, anthraquinone, sodium sulfide and surfactant are added and steamed together; the pulp after steaming is filtered, and then hydrogen peroxide is added to the filtrate and allowed to stand at room temperature. After standing, sodium hydroxide solution is added again and boiled together; sodium hypochlorite is added and heated and boiled, and finally the cotton fiber pulp, tea tree fiber pulp and bamboo fiber pulp are obtained after filtration, cleaning and drying.

[0027] Unless otherwise specified, the methods used in this example are conventional methods known to those skilled in the art, and the reagents and other materials used are commercially available products unless otherwise specified.

[0028] 2. Examples

[0029] Example 1

[0030] The lightweight sun-proof cool feeling nylon fabric of this embodiment is prepared as follows:

[0031] After being carded, nylon polymer (PA6 fiber) is stretched in a drawing machine at a stretching speed of 2 m / min. After stretching, it is immersed in a polyvinyl pyrrolidone solution (15% w / v) to obtain pre-impregnated fibers, which are then placed in a setting machine for high-temperature setting at a setting temperature of 160°C and then dried. The fibers after setting and drying are immersed in a loading liquid containing a silver-loaded antibacterial agent for ultrasonic treatment for 20 min, at an ultrasonic power of 100 W and at an ultrasonic frequency of 20 kHz. Fiber 1 is obtained after drying, wherein the amount of the silver-loaded antibacterial agent added is 2‰, and based on the mass of the loading liquid, the loading liquid is composed of 75wt% ethanol and snail extract in a volume ratio of 1:0.1.

[0032] Cotton fiber pulp and a 35 wt% NMMO aqueous solution were mixed in a mass ratio of 10:100, stirred at 100°C and distilled under reduced pressure to remove water to generate a cellulose / NMMO mixed solution. The fibers were then trimmed with the cellulose / NMMO mixed solution, dried and warped, and then woven on a loom with a warp density of 950 strands / 10 cm and a weft density of 950 strands / 10 cm. During weaving, the textile rollers were heated to 160°C. After weaving, the fabric was cooled and wound to obtain nylon fabric A.

[0033] The preparation process of fabric BC is the same as that of fabric A. The only difference is the composition of the loading solution, as shown in Table 1 below:

[0034] Table 1 Composition of the load solution in Example 1 (v / v)

[0035]

[0036] Example 2

[0037] The lightweight sun-proof cool feeling nylon fabric of this embodiment is prepared as follows:

[0038] After being carded, nylon polymer (PA6 fiber) is stretched in a drawing machine at a stretching speed of 2 m / min. After stretching, it is immersed in a polyvinyl pyrrolidone solution (15% w / v) to obtain pre-impregnated fiber, which is then placed in a setting machine for high-temperature setting at a setting temperature of 160°C and then dried. The fiber after setting and drying is immersed in a loading liquid containing a silver-loaded antibacterial agent for ultrasonic treatment. The ultrasonic treatment time is 20 min, the ultrasonic power is 100 W, and the ultrasonic frequency is 20 kHz. Fiber 1 is obtained after drying, wherein the amount of the silver-loaded antibacterial agent added is 2‰, and based on the mass of the loading liquid, the loading liquid is composed of 75wt% ethanol and snail extract in a volume ratio of 1:0.2.

[0039] Cotton fiber pulp and a 35 wt% NMMO aqueous solution were mixed in a mass ratio of 15:100, stirred at 100°C, and distilled under reduced pressure to remove water to produce a cellulose / NMMO mixed solution. The fibers were then treated with the cellulose / NMMO mixed solution, dried, and warped, and then woven on a loom with a warp density of 950 strands / 10 cm and a weft density of 950 strands / 10 cm. During weaving, the textile rollers were heated to 160°C. After weaving, the fabric was cooled and wound to obtain nylon fabric D.

[0040] The preparation process of fabric EG is the same as that of fabric D, the only difference being the cellulose pulp, as shown in Table 2 below:

[0041] Table 2 Cellulose pulp in Example 2

[0042]

[0043] 3. Performance testing

[0044] Take the fabrics prepared in Examples 1-2, and set up a blank group and a control group:

[0045] Blank group: 1 is a fabric obtained by spinning and weaving PA6 fibers, and 2 is a fabric obtained by spinning and weaving the fibers shaped and dried in Example 1;

[0046] Control group 1:

[0047] After being carded, nylon polymer (PA6 fiber) is stretched in a drawing machine at a stretching speed of 2 m / min. After stretching, it is immersed in a polyvinyl pyrrolidone solution (15% w / v) to obtain pre-impregnated fiber, which is then placed in a setting machine for high-temperature setting at a setting temperature of 160°C and then dried. The fiber after setting and drying is immersed in a loading liquid containing a silver-loaded antibacterial agent for ultrasonic treatment. The ultrasonic treatment time is 20 min, the ultrasonic power is 100 W, and the ultrasonic frequency is 20 kHz. Fiber 1 is obtained after drying, wherein the amount of the silver-loaded antibacterial agent added is 2‰, and based on the mass of the loading liquid, the loading liquid is composed of 75wt% ethanol and snail extract in a volume ratio of 1:0.2.

[0048] The above fibers were warped and woven on a loom with warp and weft parameters of 950 strands / 10 cm and 950 strands / 10 cm, and the textile rollers were heated during weaving at a heating temperature of 160° C. After weaving, the fabric was cooled and rolled up to obtain the fabric of control group 1.

[0049] Control group 2:

[0050] Cotton fiber pulp was mixed with a 35wt% NMMO aqueous solution in a mass ratio of 15:100, stirred at 100°C and distilled under reduced pressure to remove water to generate a cellulose / NMMO mixed solution. PA6 fiber was trimmed with the cellulose / NMMO mixed solution, dried and warped, and then woven on a machine with a warp density of 950 strands / 10cm and a weft density of 950 strands / 10cm. During weaving, the textile roller was heated at 160°C. After weaving, the fabric was cooled and rolled up to obtain the fabric of control group 2.

[0051] The fabrics of the embodiment, blank group and control group were taken as samples and the following performance tests were performed on them:

[0052] (1) Weighing

[0053] Cut each sample into 1m×2m pieces and weigh each sample using an electronic weighing instrument. The results are rounded to one decimal point. The mass of each sample is shown in Table 3.

[0054] (2) Antibacterial properties

[0055] According to GB / T 20944.2-2007, "Evaluation of Antibacterial Properties of Textiles - Part 2: Absorption Method," the test strain is Escherichia coli 8099 (Gram-negative bacteria) (including but not limited to this strain, and can also include Staphylococcus aureus, Candida albicans, Escherichia coli, etc.). As specified in the standard, each fabric sample was cut into 20mm x 20mm pieces and subjected to antibacterial testing after 50 washes. The results are shown in Table 3.

[0056] (3) Anti-ultraviolet performance

[0057] The UV protection of the fabrics prepared from each sample was tested using a UV-2000F textile UV protection factor tester. According to the GB / T 18830-2009 standard, "Evaluation of the Ultraviolet Protection of Textiles," five points were taken at different locations on each sample to measure the transmittance (TUVA) of ultraviolet light with a wavelength of 200-400 nm and the Ultraviolet Protection Factor (UPF), which are used to evaluate UV protection. The statistical results are shown in Table 3. A higher UPF value indicates better UV protection. Generally, a UPF value greater than 40 indicates excellent UV protection.

[0058] (4) Moisture absorption and moisture retention test

[0059] Moisture Retention: Each sample was cut into 1m x 1m pieces. Each fabric sample was placed in a glass dish and filled with the same saturated amount of water. The sample was then placed in a room with the same temperature (20°C) and humidity (40%). A hair dryer of equal power was used to dry the sample, at least 1m away from the sample. A hygrometer was used to measure moisture retention during the drying process. The average of the five experimental data sets for each sample group was used as the final data. The statistical results are shown in Table 4.

[0060] Hygroscopicity: Cut each sample into 10 cm x 10 cm specimens. The specimens should be flat and wrinkle-free. Place the specimen on the test bench and drop a 0.2 mL drop of water onto the specimen, with the dropper tip no more than 1 cm from the specimen surface. Observe the spread of the water droplet and record the time it takes for the droplet to completely penetrate and diffuse into the outer layer of the specimen, accurate to 0.1 s. If the droplet diffuses slowly, such as after 300 s, the experiment can be stopped. If the diffusion time exceeds the set time, record the average diffusion time for each specimen. The statistical results are shown in Table 4.

[0061] (5) Anti-wrinkle test

[0062] The wrinkle resistance of each fabric sample was tested using GB / T3819-1997 “Determination of Crease Recovery of Textiles—Recovery Angle Method”; the test results are shown in Table 5.

[0063] 4. Results Analysis

[0064] Table 3 Sample quality, antibacterial and UV test results

[0065]

[0066] From the above results, it can be clearly found that the quality, antibacterial rate and UV value of blank group 2 are significantly lower than those of blank group 1. It is speculated that the reason is that after the initial nylon polymer is stretched and heat-set, the various performances of nylon will be reduced. This may be due to the increase in the porosity of the nylon polymer itself after the stretching and heat-setting process.

[0067] After treatment with the preparation method of the present invention, the quality of the nylon was slightly lower than that of the original nylon, but its antibacterial rate and anti-ultraviolet function were significantly improved. The data of control groups 1 and 2 show that both the silver-loaded antibacterial agent and the cellulose / NMMO mixed solution affect the antibacterial and anti-ultraviolet properties of the nylon fabric, but the cellulose / NMMO mixed solution has a greater impact on the anti-ultraviolet properties of the nylon fabric, especially the tea tree fiber, presumably because the tea tree fiber can better absorb ultraviolet rays.

[0068] Table 4 Test results of moisture absorption and moisturizing properties of each sample

[0069]

[0070]

[0071] As can be seen from the above table, the nylon fabric obtained by the preparation method of the present invention has excellent moisture absorption properties and can quickly absorb water on the surface of the fabric. In terms of moisture retention, the moisturizing effect is also very obvious, making the fabric feel cool and not stuffy, making it very suitable for use as outdoor fabrics in summer. In the process of treating nylon fibers, snail extract is used as a component of the loading liquid to load the silver-loaded antibacterial agent into the nylon fibers. The viscosity of the snail extract can increase the interaction between the fibers, making the silver-loaded antibacterial agent more adherent and more stable. It also has a reinforcing function, compensating for the adverse effects of the stretching and heat setting process on the performance of nylon. In addition, the snail extract has excellent moisturizing properties, locks in water and is skin-friendly, making it more comfortable to wear and increasing the brightness of the fabric.

[0072] Table 5 Anti-wrinkle performance test results of each sample

[0073]

[0074]

[0075] According to the results in the above table, the nylon fabric obtained by the preparation method of the present invention has a significantly improved wrinkle recovery angle and is very washable. The NMMO aqueous solution, as a spinning raw material for regenerated cellulose, has excellent anti-wrinkle effect. The present invention also adds cellulose pulp to the NMMO aqueous solution, and the anti-wrinkle effect is further enhanced. Moreover, the results of Example 1 and Example 2 also show that the anti-wrinkle effect of tea tree fiber and bamboo fiber is better than that of cotton fiber.

[0076] In summary, the present invention uses a silver-loaded antibacterial agent to load onto nylon fiber, which can effectively increase the antibacterial effect of the fabric. Snail extract is used as a component of the loading liquid to load the silver-loaded antibacterial agent into the nylon fiber. The viscosity of the snail extract can increase the interaction between the fibers, making the silver-loaded antibacterial agent more adherent and more stable. It also has a reinforcing function, compensating for the adverse effects of the stretching and heat setting process on the performance of nylon. In addition, the snail extract has excellent moisturizing properties, locks in water and is skin-friendly, making it more comfortable to wear and increasing the brightness of the fabric. Furthermore, the present invention uses a cellulose / NMMO mixed solution to finish the nylon fiber, utilizing the toughness of the NMMO aqueous solution and natural fibers to increase the wrinkle resistance of the nylon fiber. It is also found that it can increase the anti-ultraviolet performance of the nylon fabric. Combined with the test results of various aspects, the nylon fabric prepared by the preparation method of the present invention has the functions of lightness, sun protection, and moisture absorption, and is suitable for use as a fabric for outdoor clothing in summer.

[0077] The above embodiment merely represents one embodiment of the present invention. While the description is relatively specific and detailed, it should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the scope of the present invention, and such modifications and improvements are all within the scope of protection of the present invention.

Claims

1. A method for preparing a lightweight sun-proof cool nylon fabric, characterized in that: The following steps are involved: (1) A nylon polymer is sequentially subjected to a stretching and heat-setting process, and then immersed in a loading liquid containing a silver-loaded antibacterial agent for ultrasonic treatment, and then dried to obtain a fiber 1, wherein the loading liquid is composed of 75 wt% ethanol and snail extract in a volume ratio of 1: (0.1-0.2); (2) The fiber is treated with a finishing liquid and then woven on a loom, the textile roller is heated during weaving, and the nylon fabric is obtained by cooling and winding after weaving, wherein the raw materials for preparing the finishing liquid include a 35wt% NMMO aqueous solution and a cellulose pulp; the preparation process of the finishing liquid is as follows: cellulose pulp and a 35wt% NMMO aqueous solution are mixed in a mass ratio of (10-15):100, stirred at 100°C and distilled under reduced pressure to remove water to generate a cellulose / NMMO mixed solution; the cellulose pulp is one of cotton fiber pulp, tea tree fiber pulp, and bamboo fiber pulp.

2. The method for preparing a lightweight sun-proof cool feeling nylon fabric according to claim 1, characterized in that: The stretching and heat setting process in step (1) is specifically as follows: the nylon polymer is carded and then put into a drawing machine for stretching, and after stretching, it is immersed in a polyvinyl pyrrolidone solution to obtain pre-impregnated fibers, and then placed in a setting machine for high-temperature setting, and the fibers are obtained after setting and drying; The stretching speed is 2-5 m / min and the setting temperature is 160-180°C.

3. The method for preparing a lightweight sun-proof cool feeling nylon fabric according to claim 1, characterized in that: The preparation process of the snail extract is specifically as follows: The shelled snail tissue is put into boiling water and boiled, and a preservative is added during the boiling process. After boiling until it becomes a thick soup, it is put into a grid mold and frozen into a solid. After the solid is demolded, it is put into a vacuum dryer for drying, and then ground into a grinder to obtain a snail extract.

4. The method for preparing a lightweight sun-proof cool feeling nylon fabric according to claim 3, characterized in that: The preservative is one of sorbic acid and its salts, benzoic acid and its sodium salt.

5. The method for preparing a lightweight sun-proof cool feeling nylon fabric according to claim 1, characterized in that: The ultrasonic treatment time is 15-20 minutes, the ultrasonic power is 100-300W, and the ultrasonic frequency is 20-30KHz.

6. The method for preparing a lightweight sun-proof cool feeling nylon fabric according to claim 1, characterized in that: The cellulose pulp is tea tree fiber pulp.

7. The method for preparing a lightweight sun-proof cool feeling nylon fabric according to claim 1, characterized in that: The heating temperature in step (2) is 160-180°C.

8. A lightweight sun-proof cool feeling nylon fabric, characterized in that: Prepared by the preparation method described in any one of items 1-7 above.

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