阅读说明：本技术 纳米银纤维材料的制备方法 (Preparation method of nano silver fiber material ) 是由 仇瑾 于 2020-12-29 设计创作，主要内容包括：本发明公开一种纳米银纤维材料的制备方法,其特征在于,包括如下步骤：1)采用含银锦纶纳米纤维与聚丙烯酸钠纤维混纺,制备混纺纱线；2)利用步骤1)得到的混纺纱线作为经纱与聚丙烯酸钠纤维作为纬纱进行纺织,织物组织为平纹,织物经密168根/10cm,纬密81根/10cm。采用本发明制备工艺制备得到的纳米银材料织物在确保抗菌性能的同时,提高了织物的透气率和透湿率,大幅提高了与皮肤接触的舒适度。(The invention discloses a preparation method of a nano-silver fiber material, which is characterized by comprising the following steps: 1) blending silver-containing nylon nano-fiber and sodium polyacrylate fiber to prepare blended yarn; 2) and (2) spinning by using the blended yarns obtained in the step 1) as warp yarns and using sodium polyacrylate fibers as weft yarns, wherein the fabric weave is plain, the fabric has a warp density of 168 pieces/10 cm and a weft density of 81 pieces/10 cm. The nano-silver material fabric prepared by the preparation process disclosed by the invention has the advantages that the antibacterial performance is ensured, the air permeability and the moisture permeability of the fabric are improved, and the comfort level of the fabric in contact with the skin is greatly improved.)

1. The preparation method of the nano-silver fiber material is characterized by comprising the following steps:

(1) the silver-containing nylon nanofiber and the sodium polyacrylate fiber are blended to prepare the blended yarn.

(2) And (2) spinning by using the blended yarns obtained in the step (1) as warp yarns and using sodium polyacrylate fibers as weft yarns, wherein the fabric weave is plain, the fabric has a warp density of 168 pieces/10 cm and a weft density of 81 pieces/10 cm.

2. The method as claimed in claim 1, wherein the blending ratio of the silver-containing nylon nanofiber to the sodium polyacrylate fiber is (30-70): (70-30).

3. The method as claimed in claim 2, wherein the blending ratio of the silver-containing nylon nanofiber to the sodium polyacrylate fiber is 50: 50.

4. the method as claimed in claim 1, wherein the blended yarn has a fineness of 80 tex.

5. The method as claimed in claim 1, wherein the silver-containing nylon nanofiber is obtained by immersing nylon fiber in a silver ion complex solution and then subjecting the nylon fiber to oxidation treatment by ozone.

6. The method of claim 1, wherein the nylon fiber has a break strength of 68 cN-tex^-1The breaking strength was 530.2 cN.

7. The nano silver fiber material fabric prepared by the method of the claims 1-6.

8. The fabric as claimed in claim 1, wherein the nano silver fiber material fabric has a relative moisture permeability of 50-88.2%, and an air permeability of 680-800L-m^-2·s^-1。

Technical Field

The invention relates to the technical field of textile materials, in particular to a preparation method of a nano silver fiber material for a protective clothing.

Background

Sports protectors such as knee pads and elbow pads are commonly used for protecting people from injuries and protecting health and rehabilitation. The product needs to have higher mechanical strength, is not easy to deform and simultaneously has other effects. The deodorant textile added with the nano-sized silver ions can protect a wearer and a user, prevent infectious diseases, prevent the fabric from generating malodor and protect the skin surface of the wearer. The materials are usually sprayed and dipped, so that metal ions are attached to the surface of the fabric and fall off after long-time washing, the antibacterial performance of the fabric is reduced, and the washing fastness is poor. Meanwhile, in order to improve the associativity, hydrophilic cotton fabric is generally adopted, the mechanical property of the cotton fabric is low, and the cotton fabric is easy to deform after long-term use.

The abrasion resistance of the nylon fiber is the best of textile fiber, and the breaking strength is higher; the polyethylene fiber has excellent resilience and fatigue resistance, has low density, and is the lightest fiber except polyethylene and polypropylene. The nylon fiber is the most ideal material for sports products. However, the nylon fiber has low hygroscopicity and poor air permeability, and sweat generated by skin cannot be removed in time if the nylon fiber is used in the process of exercise, so that the comfort of a wearer is affected.

Disclosure of Invention

Aiming at the problems, the invention provides a preparation method of a nano-silver fiber material, which can improve the comfort of a nylon fiber fabric on the premise of ensuring the antibacterial performance by selecting a composite material and a weaving specification, and provides a reference for expanding the application of the nylon composite fiber material in the field of clothing.

In order to achieve the purpose, the invention provides the following technical scheme:

a preparation method of a nano silver fiber material comprises the following steps:

(1) blending silver-containing nylon nano-fiber and sodium polyacrylate fiber to prepare blended yarn;

(2) and (2) spinning by using the blended yarns obtained in the step (1) as warp yarns and using sodium polyacrylate fibers as weft yarns, wherein the fabric weave is plain, the fabric has a warp density of 168 pieces/10 cm and a weft density of 81 pieces/10 cm.

Preferably, the blending ratio of the silver-containing nylon nanofiber to the sodium polyacrylate fiber is (30-70): (70-30).

Preferably, the blending ratio of the silver-containing nylon nanofiber to the sodium polyacrylate fiber is 50: 50.

preferably, the fineness of the blended yarn is 80 tex.

Preferably, the silver-containing nylon nanofiber is obtained by immersing nylon fibers in a silver ion complex solution and then performing oxidation treatment by ozone.

Preferably, the break strength of the nylon fiber is 68 cN-tex^-1The breaking strength was 530.2 cN.

The invention also discloses the nano silver fiber material fabric prepared by the method.

Preferably, the relative moisture permeability of the nano silver fiber material fabric is 50-88.2%, and the air permeability is 680-800 L.m^-2·s^-1。

The nano-silver material fabric prepared by the preparation process disclosed by the invention has the advantages that the antibacterial performance is ensured, the air permeability and the moisture permeability of the fabric are improved, and the comfort level of the fabric in contact with the skin is greatly improved.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to specific embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

The fabrics of the following examples have a warp density of 168 pieces/10 cm and a weft density of 81 pieces/10 cm, and the fabric weaves in the tables are plain weaves. The fineness of the blended yarn was 80 tex. The silver-containing nylon nanofiber is prepared by adopting an ozone oxidation method.

TABLE 1 woven fabric Specification

Examples	Silver-containing chinlon nano-gradeFiber/sodium polyacrylate fiber blend ratio
		1	70/30
2	50/50
		3	30/70

Test examples

1. Antibacterial property test

According to GB/T20944.3-2008, evaluation of antibacterial performance of textiles part 3: the oscillation method tests 3 pieces of fabrics to be tested, and the test process is as follows: respectively placing a sample to be tested and a reference sample into a triangular flask containing test bacterial liquid with certain concentration, then placing the triangular flask into a shaking incubator with the rotation speed of 150r/min, carrying out shaking culture at the temperature of 24 +/-1 ℃, carrying out l8h, testing the viable bacteria concentration of the bacterial liquid in the triangular flask before the shaking culture and after the shaking culture for certain time, and calculating the bacteriostatic rate to evaluate the antibacterial effect of the fabric.

The strains and reagents used were: escherichia coli strain (ATCC25922), Staphylococcus aureus (ATCC6538), peptone (Beijing Ooboxin Biotechnology, Inc.), beef extract (national drug group chemical Co., Ltd.), disodium hydrogen phosphate (national drug group chemical Co., Ltd.), and dipotassium hydrogen phosphate (national drug group chemical Co., Ltd.).

The results of the bacteriostatic test for examples 1-3 are shown in Table 2.

TABLE 2 results of the bacteriostatic ratio test

As can be seen from table 2, the silver-containing composite fiber fabric has excellent antibacterial properties because the polyimide silver composite fiber contains a large amount of silver ions, and the silver ion antibacterial agent has broad-spectrum antibacterial properties. Almost all microorganisms can be inhibited and killed. And the sterilizing effect is improved with the increase of the silver-containing nylon nano-fiber in the proportion of the fabric.

2. Air permeability test

According to GB/T5453-1997 (determination of textile fabric air permeability), 3 pieces of fabric are subjected to air permeability test, the test process is that 5 pieces of test samples with the diameter of 13cm are cut at different positions of the fabric to be tested, a digital fabric air permeability measuring instrument is adopted for testing, a proper nozzle caliber is selected in the test process, the pressure difference between two sides of the test sample is stabilized at 100Pa, the flow volume passing through the fabric in unit time, namely the air permeability, is measured for 5 times, the average value of the flow volume is taken, and the test results are shown in Table 3.

Table 3 fabric air permeability test results

Examples	Air permeability/L.m-2·s-1
		1	683
2	787
		3	800

It can be seen from table 3 that after the silver-containing nylon nanofiber is mixed with the sodium polyacrylate fiber, the pores between the fibers are increased due to the different diameters of the fibers, and the air permeability of the fabric is obviously improved.

3. Moisture permeability test

And testing the moisture permeability of the fabric to be tested by adopting an evaporation method. The test process is as follows: preparing a plurality of moisture permeable cups under the standard atmospheric condition; firstly, injecting 175mL of warm water with the temperature of 80 ℃ into a cup, covering a sample to be tested with a certain size on a moisture permeable cup, and fastening by using a rubber band; weighing with electronic balance every 50min, recording data, weighing for 7 times in sequence, and recording as A₁～A₇(ii) a A moisture permeable cup filled with the same amount of isothermal water was prepared without covering the sample, and similarly, the sample was weighed and recorded on an electronic balance at intervals of 50min, and the sample was weighed 7 times in order and respectively denoted as B₁～B₇. The relative moisture permeability s (%) can be calculated using formula (1), wherein i is 1, 2, …, 7.

S_i＝[(A_i-A_i+1)/(B_i–B_i+1)]×100％ (1)

Table 4 relative moisture permeability test results

As can be seen from table 4, the relative moisture permeability of the fabric gradually decreased with increasing time. This is because during the initial stage of testing, the fabric remains open between fibers and between yarns, and moisture on both sides of the fabric is free to pass through. As the fiber absorbs moisture and releases heat, the temperature of the fiber gradually rises, the evaporation speed of water in the fiber is accelerated, so that the moisture permeability can reach the maximum value at the initial stage of the test: with the increase of time, the moisture absorption capacity of the fiber gradually approaches to saturation, the fiber expands after moisture absorption to reduce gaps among the fibers and among yarns, and partial gaps among the fibers and yarns are filled with water vapor, so that the smooth water vapor passage is blocked, and the moisture permeability of the fabric is gradually reduced. It can also be seen from table 4 that the water absorption performance is greatly improved with the addition of the sodium polyacrylate fiber.