An elastic fabric based on UV-resistant yarn and its preparation method

Abstract

This invention relates to an elastic fabric based on UV-resistant yarn and its preparation method. The elastic fabric is woven with UV-resistant yarn as both warp and weft. The UV-resistant yarn is composed of a UV-resistant fiber body with grooves on both sides in the horizontal direction and a cooling and antibacterial fiber disposed within the grooves. The UV-resistant fiber body is obtained by uniformly mixing UV-resistant nanoparticles with polyester chips and then melt-extruding. Through research on the structure and formulation components of the UV-resistant yarn, this invention enables the elastic fabric prepared by this invention to have excellent UV protection, breathability, and moisture permeability, as well as long-lasting antibacterial and deodorizing properties, thus broadening the application functions of elastic fabrics.

Description

Technical Field

[0001] This invention belongs to the field of fabric technology, specifically relating to an elastic fabric based on ultraviolet-proof yarn and its preparation method. Background Technology

[0002] As consumers demand higher functionality and performance from clothing, textile fabrics are no longer limited to a single function. In addition to comfort and aesthetics, they often need to have properties such as UV protection, antibacterial properties, mite prevention, waterproofing, or flame retardancy.

[0003] Existing UV-blocking fabrics often employ the addition of inorganic UV-blocking agents, impregnation of the fabric fibers, or sol-gel methods to form an adhesive layer on the fiber surface, thus imparting UV protection. Existing antibacterial fabrics operate on the same principle, using antibacterial additives to impregnate the fabric fibers, attaching antibacterial molecules to the fiber surface, and then weaving the fibers to form an antibacterial fabric. However, combining multiple functional materials with fibers often introduces several drawbacks, such as reduced breathability and moisture permeability, and poor bonding between functional materials and fibers leading to low washability and durability. Therefore, addressing these issues is crucial to improving the quality of multifunctional composite fabrics. Summary of the Invention

[0004] The purpose of this invention is to provide an elastic fabric based on UV-resistant yarn and its preparation method in order to solve the above-mentioned problems.

[0005] The present invention achieves the above objectives through the following technical solutions:

[0006] As a first aspect of the present invention, the present invention provides an elastic fabric based on ultraviolet-proof yarn, the elastic fabric being woven with ultraviolet-proof yarn as warp and weft;

[0007] The UV-resistant yarn is composed of a UV-resistant fiber body with grooves on both sides in the horizontal direction and a cooling and antibacterial fiber set in the grooves. The UV-resistant fiber body is obtained by uniformly mixing UV-resistant nanoparticles with polyester chips and then melt-extruding.

[0008] As a further optimization of the present invention, the mixing mass ratio of the UV-resistant nanopowder to the polyester chips is 2:2-4.

[0009] As a further optimization of the present invention, the UV-resistant nanopowder is zinc oxide powder.

[0010] As a further optimization of the present invention, the cooling and antibacterial fiber, by weight fraction, comprises 80-100 parts polyester chips, 20-30 parts jute short fibers, 10-20 parts montmorillonite powder, 10-20 parts menthol, 5-10 parts yeast mannan, and 1-5 parts dispersing agent.

[0011] As a further optimization of the present invention, the method for preparing the cooling and antibacterial fiber includes the following steps:

[0012] (1) Weigh jute short fiber, montmorillonite powder, menthol, and yeast mannan according to the formula, and mix them to obtain mixture A;

[0013] (2) Weigh the polyester chips according to the formula, melt the polyester chips to obtain a melt liquid, mix the mixed material A, dispersant and melt liquid and then melt extrude to obtain cool and antibacterial fiber.

[0014] As a further optimization of the present invention, the dispersing agent is water glass and sodium dodecyl sulfate, and the mass ratio of propylene glycol, water glass and sodium dodecyl sulfate is 1-2:2-3:1-5.

[0015] As a second aspect of the present invention, the present invention provides a method for preparing an elastic fabric based on ultraviolet-resistant yarn as described in any of the above, comprising the following steps:

[0016] (1) First, mix the UV-resistant nanopowder with polyester chips evenly, and then melt-extrude to obtain a UV-resistant fiber body with grooves on both sides. Cool it for later use, and under hot pressing conditions, hot press the cooling and antibacterial fiber into the grooves on both sides of the UV-resistant fiber body obtained in step (1) to obtain UV-resistant yarn.

[0017] (2) The ultraviolet-proof yarn obtained in step (1) is used as the warp and weft yarn to make the elastic fabric based on the ultraviolet-proof yarn.

[0018] As a further optimization of the present invention, in step (1), the hot pressing temperature is 85-95℃, the hot pressing pressure is 10-15MPa, and the hot pressing mold is a pair of arc plates.

[0019] The beneficial effects of this invention are as follows:

[0020] The elastic fabric based on UV-resistant yarn provided by this invention is woven with UV-resistant yarn as warp and weft. Through research on the structure and formulation of UV-resistant yarn, the elastic fabric prepared by this invention has excellent UV protection, breathability and moisture permeability, and long-lasting antibacterial and deodorizing properties, thus broadening the application functions of elastic fabric. Attached Figure Description

[0021] Figure 1 A schematic cross-sectional view of four UV-blocking yarns arranged sequentially, as provided in Embodiment 1 of the present invention;

[0022] Figure 2 This is a schematic diagram of hot pressing provided in Embodiment 1 of the present invention;

[0023] Figure 3 This is a cross-sectional schematic diagram of four UV-blocking yarns arranged sequentially, as provided in Comparative Example 1 of the present invention.

[0024] Figure 4 This is a cross-sectional schematic diagram of four UV-blocking yarns arranged sequentially, as provided in Comparative Example 2 of the present invention. Detailed Implementation

[0025] The present application will now be described in further detail with reference to the accompanying drawings. 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.

[0026] Example 1

[0027] This embodiment provides an elastic fabric based on UV-blocking yarn. The elastic fabric is woven using UV-blocking yarn as both warp and weft, and its preparation method is as follows:

[0028] (1) First, mix zinc oxide powder and polyester chips evenly at a mass ratio of 2:2. Then, at 200°C, use a twin-screw extruder to melt-extrude and obtain a UV-resistant fiber body with grooves on both sides in the horizontal direction. Cool it for later use. To ensure that the obtained UV-resistant fiber body has grooves on both sides, an extrusion die with a corresponding structure should be selected.

[0029] (2) Weigh 20 parts jute short fiber, 10 parts montmorillonite powder, 20 parts menthol, 5 parts yeast mannan, and 5 parts dispersing agent according to the formula, mix them to obtain mixed material A, weigh 80 parts polyester chips according to the formula, melt the polyester chips at 150℃ to obtain molten liquid, mix mixed material A, dispersing agent (propylene glycol, water glass and sodium dodecyl sulfate in a mass ratio of 1:2:1) with molten liquid, and then melt extrude it at 200℃ using a twin-screw extruder to obtain cool and antibacterial fiber;

[0030] (3) Subsequently, under hot pressing conditions of 95°C and 10MPa, the cooling and antibacterial fibers are hot-pressed into the grooves on both sides of the UV-resistant fiber body obtained in step (1) (see the hot pressing diagram). Figure 2 ), to obtain UV-resistant yarn (such as Figure 1 , Figure 1(A schematic diagram of the cross-section of four UV-blocking yarns arranged in sequence);

[0031] (4) The elastic fabric based on the UV-resistant yarn is made by weaving the UV-resistant yarn as the warp and weft yarns. The weaving density is 65 warp threads / cm and 65 weft threads / cm.

[0032] Example 2

[0033] This embodiment provides an elastic fabric based on UV-blocking yarn, the preparation method of which is as follows:

[0034] (1) First, mix zinc oxide powder and polyester chips evenly at a mass ratio of 2:3. Then, at 200°C, use a twin-screw extruder to melt-extrude and obtain a UV-resistant fiber body with grooves on both sides in the horizontal direction. Cool it for later use. To ensure that the obtained UV-resistant fiber body has grooves on both sides, an extrusion die with a corresponding structure should be selected.

[0035] (2) Weigh 30 parts jute short fiber, 5 parts, 20 parts montmorillonite powder, 10 parts menthol, 10 parts yeast mannan, and 5 parts dispersing agent according to the formula to obtain mixed material A. Weigh 100 parts polyester chips according to the formula and melt the polyester chips at 150°C to obtain a melt liquid. Mix mixed material A, dispersing agent (propylene glycol, water glass and sodium dodecyl sulfate in a mass ratio of 2:2:2) with the melt liquid and melt extrude it at 200°C using a twin-screw extruder to obtain cool and antibacterial fiber.

[0036] (3) Subsequently, under hot pressing conditions of 85°C and 15MPa, the cooling and antibacterial fiber is hot-pressed into the grooves on both sides of the UV-resistant fiber body obtained in step (1) to obtain UV-resistant yarn.

[0037] (4) The elastic fabric based on the UV-resistant yarn is made by weaving the UV-resistant yarn as the warp and weft yarns. The weaving density is 65 warp threads / cm and 65 weft threads / cm.

[0038] Example 3

[0039] This embodiment provides an elastic fabric based on UV-blocking yarn, the preparation method of which is as follows:

[0040] (5) First, mix zinc oxide powder and polyester chips evenly at a mass ratio of 2:4. Then, at 200°C, use a twin-screw extruder to melt-extrude and obtain a UV-resistant fiber body with grooves on both sides in the horizontal direction. Cool and set aside. To ensure that the obtained UV-resistant fiber body has grooves on both sides, an extrusion die with a corresponding structure should be selected.

[0041] (6) Weigh 25 parts jute short fiber, 7.5 parts, 15 parts montmorillonite powder, 15 parts menthol, 7.5 parts yeast mannan, and 5 parts dispersing agent according to the formula to obtain mixed material A. Weigh 90 parts polyester chips according to the formula and melt the polyester chips at 150°C to obtain a melt liquid. Mix mixed material A, dispersing agent (propylene glycol, water glass and sodium dodecyl sulfate in a mass ratio of 2:2:5) with the melt liquid and melt extrude it at 200°C using a twin-screw extruder to obtain cool and antibacterial fiber.

[0042] (7) Subsequently, under hot pressing conditions of 85°C and 15MPa, the cooling and antibacterial fiber is hot-pressed into the grooves on both sides of the UV-resistant fiber body obtained in step (1) to obtain UV-resistant yarn.

[0043] (8) The elastic fabric based on the UV-resistant yarn is made by warping the UV-resistant yarn as the warp and weft yarns, with a warp density of 65 threads / cm and a weft density of 65 threads / cm.

[0044] Comparative Example 1

[0045] This comparative example provides an elastic fabric based on UV-resistant yarn. The preparation method differs from that of Example 1 in that a cooling and antibacterial fiber is prepared first. 20 parts of jute short fiber, 10 parts of montmorillonite powder, 20 parts of menthol, and 5 parts of yeast mannan are weighed according to the formula and mixed to obtain mixed material A. 80 parts of polyester chips are weighed according to the formula, and the polyester chips are melted at 150°C to obtain a melt liquid. Mixed material A, dispersing agent (propylene glycol, water glass, and sodium dodecyl sulfate in a mass ratio of 1:2:1) are mixed with the melt liquid and then melt-extruded at 200°C using a twin-screw extruder to obtain the cooling and antibacterial fiber.

[0046] Using cooling and antibacterial fibers as the core yarn, in step (1) when preparing the UV-resistant fiber body, zinc oxide powder and polyester chips are first mixed evenly at a mass ratio of 2:2, and then melt-extruded at 200°C using a twin-screw extruder to form a UV-resistant fiber body with cooling and antibacterial fibers as the core yarn and a UV-resistant fiber body wrapped around the core yarn. The structure of the UV-resistant yarn is as follows: Figure 3 ( Figure 3 (A schematic diagram showing the arrangement of four UV-blocking yarns in sequence).

[0047] Comparative Example 2

[0048] This comparative example provides an elastic fabric based on UV-resistant yarn. The preparation method of this fabric differs from that of Example 1 in that, when preparing the UV-resistant fiber body, zinc oxide powder and polyester chips are first mixed evenly at a mass ratio of 2:2. Then, the mixture is melt-extruded at 200°C using a twin-screw extruder to obtain a UV-resistant fiber body with grooves on both sides in the vertical direction. The mixture is then cooled and set aside. To ensure that the obtained UV-resistant fiber body has grooves on both sides, an extrusion die with an appropriate structure should be selected.

[0049] The structure of the obtained UV-blocking yarn is as follows Figure 4 ( Figure 4 (A schematic diagram showing the arrangement of four UV-blocking yarns in sequence).

[0050] I. The elastic fabric samples obtained in Examples 1-3 and Comparative Examples 1-2 were subjected to relevant performance tests.

[0051] (1) The test basis for the UV resistance test is GB / T17032-1997. This standard determines the UV transmittance of textile fabrics. According to the standard, the fabric samples are cut into 20mm×20mm sizes to ensure that the sample fabrics are dry and not twisted. The test wavelength interval is 5nm, the UV wavelength range is 280-315nm, and each sample is tested 5 times to calculate the average UV shielding rate.

[0052] (2) Air permeability test: Referring to the national standard (GB / T5433), the air permeability of the samples was tested 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 air permeability area 20cm². 2 The nozzle diameter is 0.8mm. Ten tests were conducted on different parts of the fabric sample, and the average value was taken as the final air permeability data.

[0053] (3) Moisture permeability test: According to national standard GB / T12704.1-2009(a), the moisture permeability of the samples was tested using an FX3180 moisture permeability meter. During the test, the temperature was 38℃, the humidity was 90.0%, the airflow velocity was 0.5m / s, and the test area was 28.3cm². 2 Before testing, the test chamber needs to be pre-conditioned for humidity. After automatic humidity conditioning, the instrument begins the moisture permeability test, automatically recording moisture permeability data every hour for a total of two times. After the experiment is completed, the moisture permeability data of the samples are manually recorded, and the average of the three sets of experimental data for each sample is used as the final data.

[0054] The test results are shown in Table 1.

[0055] Table 1. Statistical Table of Test Results

[0056]

[0057] As can be seen from the results in Table 1, the elastic fabrics prepared in Examples 1-3 are generally superior to those in Comparative Examples 1-2 in terms of UV shielding rate and breathability and moisture permeability. The difference between Comparative Example 1 and Example 1 is that the structure of the UV shielding yarn is different. The UV shielding yarn disclosed in Comparative Example 1 has a structure in which the cooling and antibacterial fiber is the core yarn and the UV-resistant fiber body is wrapped around the surface of the cooling and antibacterial fiber as the outer yarn. The UV-resistant fiber body with UV-resistant function is on the outside, so the UV shielding rate is not much different from that of the examples. However, it has a certain degree of influence on the breathability and moisture permeability data of the fabric.

[0058] Compared to Example 1, Comparative Example 2 differs in that the grooves of the UV-blocking fiber body in the structure of the UV-blocking yarn are located on both sides of the vertical direction. From the data structure, the value of UV shielding rate is slightly lower, which is presumably due to the reduction in the area occupied by the UV-blocking fiber body in the UV-blocking yarn. In addition, the breathability and moisture permeability data are lower than those of Example 1, which is presumably because the composite of cooling and antibacterial fibers on both sides of the vertical direction of the UV-blocking fiber body affects the overall breathability and moisture permeability of the fabric.

[0059] In addition, the elastic fabric samples obtained in Examples 1-3 and Comparative Examples 1-2 were subjected to antibacterial tests. The test was conducted according to GB / T 20944.2-2007 "Evaluation of Antibacterial Properties of Textiles" Part 2: Absorption Method. The test strains were Staphylococcus aureus ATCC No. 6538 (Gram-positive bacteria), Escherichia coli 8099 (Gram-negative bacteria), and Candida albicans ATCC No. 10231 (Candida spp.). According to the standard, the fabric samples were cut into 20mm×20mm pieces and subjected to antibacterial tests after 0 and 100 washes.

[0060] The test results are shown in Table 3.

[0061] Table 3 Statistical Table of Results

[0062]

[0063] As can be seen from the results in Table 2, Examples 1-3 have an advantage over Comparative Examples 1-2 in terms of antibacterial effects against Staphylococcus aureus, Escherichia coli, and Candida albicans. Based on the data from 100 washes, it can be seen that the antibacterial durability of the fabrics in Examples 1-3 is stronger than that in Comparative Examples 1-2.

[0064] II. To investigate the effect of cooling and antibacterial fibers on the performance of elastic fabrics, the formulation of cooling and antibacterial fibers was adjusted according to Table 4, and fabric samples were prepared according to the preparation method given in Example 1.

[0065] Table 4. Component Design of Cooling and Antibacterial Fiber

[0066]

[0067] The dispersing agents selected were propylene glycol, water glass, and sodium dodecyl sulfate in a mass ratio of 1:2:1. The fabric samples prepared in group AD were subjected to deodorization performance testing. The deodorization performance was tested according to GB / T 33610-2019 "Determination of Deodorization Performance of Textiles" for fabric samples after 0 and 100 washes.

[0068] The test results are shown in Table 5.

[0069] Table 5 Statistical Table of Results

[0070]

[0071]

[0072] As can be seen from the results in Table 5, the composition ratio of the cooling and antibacterial fiber has a significant impact on the deodorizing performance of the fabric. Group A showed better reduction rates in the concentrations of ammonia, acetic acid, and isovaleric acid odor components than other groups. This indicates that the three components of jute short fiber, montmorillonite powder, and yeast mannan work synergistically to improve the deodorizing performance of the fabric.

[0073] 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. An elastic fabric based on UV-resistant yarn, characterized in that: The elastic fabric is woven with UV-resistant yarn as both warp and weft. The UV-resistant yarn is composed of a UV-resistant fiber body with grooves on both sides in the horizontal direction and a cooling and antibacterial fiber set in the grooves. The UV-resistant fiber body is obtained by uniformly mixing UV-resistant nanopowder with polyester chips and then melt extruding. The cooling and antibacterial fiber, by weight fraction, comprises 80-100 parts polyester chips, 20-30 parts jute short fibers, 10-20 parts montmorillonite powder, 10-20 parts menthol, 5-10 parts yeast mannan, and 1-5 parts dispersing agent.

2. The elastic fabric based on UV-resistant yarn according to claim 1, characterized in that: The mass ratio of the UV-resistant nanoparticles to the polyester chips is 2:2-4.

3. The elastic fabric based on UV-resistant yarn according to claim 1, characterized in that: The UV-resistant nanoparticles are zinc oxide powder.

4. The elastic fabric based on UV-resistant yarn according to claim 1, characterized in that: The method for preparing the cooling and antibacterial fiber includes the following steps: (1) Weigh jute short fiber, montmorillonite powder, menthol, and yeast mannan according to the formula, and mix them to obtain mixture A; (2) Weigh the polyester chips according to the formula, melt the polyester chips to obtain the melt liquid, mix the mixed material A, dispersant and melt liquid and then melt extrude to obtain the cooling and antibacterial fiber.

5. The elastic fabric based on UV-resistant yarn according to claim 1, characterized in that: The dispersing agent is propylene glycol, water glass and sodium dodecyl sulfate, and the mass ratio of propylene glycol, water glass and sodium dodecyl sulfate is 1-2:2-3:1-5.

6. A method for preparing an elastic fabric based on UV-blocking yarn as described in any one of claims 1-5, characterized in that: Includes the following steps: (1) First, mix the UV-resistant nanopowder with polyester chips evenly, and then melt-extrude to obtain a UV-resistant fiber body with grooves on both sides. Cool it for later use, and under hot-pressing conditions, hot-press the cooling and antibacterial fiber into the grooves on both sides of the UV-resistant fiber body to obtain UV-resistant yarn. (2) The UV-resistant yarn obtained in step (1) is used as the warp and weft yarn to make the elastic fabric based on the UV-resistant yarn.

7. The method for preparing an elastic fabric based on UV-blocking yarn according to claim 6, characterized in that, In step (1), the hot pressing temperature is 85-95℃, the hot pressing pressure is 10-15MPa, and the hot pressing mold is a pair of arc plates.

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