阅读说明：本技术 一种纳米银线/砭石纤维抗菌材料的制备方法及产品和应用 (Preparation method, product and application of nano silver wire/stone needle fiber antibacterial material ) 是由 方彦雯 方志财 朱君 戴彦彤 于 2021-07-02 设计创作，主要内容包括：本发明提供一种纳米银线/砭石纤维抗菌材料的制备方法,将聚乙烯吡咯烷酮、碘化物和砭石粉溶于乙二醇中,充分搅拌溶解,得溶液A；将硝酸银溶于乙二醇溶液中,搅拌至溶解,得溶液B；将A溶液搅拌加热至140～180℃,关闭加热,将B均匀地加入到A溶液中；充分反应后快速降温至室温,停止反应,将反应用有机溶剂洗涤,得超细纳米银线/砭石；将超细纳米银线/砭石溶于极性溶剂中,再向其中加入壳聚糖,室温磁力搅拌,充分混合后制成均匀纺丝溶液；将上述纺丝液用静电纺丝装置进行纺丝,获得超细纳米银线/砭石纤维材料。超细纳米银线/砭石纤维抗菌材料具有较好的抗菌效果,抗菌率大于98％,该制备工艺相对简单,易操作。(The invention provides a preparation method of a nano silver wire/stone needle fiber antibacterial material, which is characterized by dissolving polyvinylpyrrolidone, iodide and stone needle powder in ethylene glycol, and fully stirring and dissolving to obtain a solution A; dissolving silver nitrate in an ethylene glycol solution, and stirring until the silver nitrate is dissolved to obtain a solution B; stirring and heating the solution A to 140-180 ℃, turning off the heating, and uniformly adding the solution B into the solution A; after full reaction, quickly cooling to room temperature, stopping the reaction, and washing the reaction by using an organic solvent to obtain superfine nano silver wires/stone needles; dissolving superfine nano silver wires/stone needles in a polar solvent, adding chitosan into the polar solvent, magnetically stirring at room temperature, and fully mixing to prepare a uniform spinning solution; and spinning the spinning solution by using an electrostatic spinning device to obtain the superfine nano silver wire/stone needle fiber material. The superfine nano silver wire/stone needle fiber antibacterial material has a good antibacterial effect, the antibacterial rate is more than 98%, and the preparation process is relatively simple and easy to operate.)

1. A preparation method of a nano silver wire/stone needle fiber antibacterial material is characterized by comprising the following specific steps:

1) dissolving polyvinylpyrrolidone, iodide and stone needle powder in ethylene glycol, wherein the mass ratio of polyvinylpyrrolidone to iodide to stone needle powder is 160-260: 1: 30-50, fully stirring and dissolving to obtain a solution A;

2) dissolving silver nitrate in an ethylene glycol solution, stirring until the silver nitrate is dissolved, wherein the mass ratio of the silver nitrate to the stone needle powder is 1: 1-3, obtaining a solution B;

3) stirring and heating the solution A to 140-180 ℃, turning off the heating, and uniformly adding the solution B into the solution A;

4) after full reaction, quickly cooling to room temperature, stopping the reaction, and washing the reaction by using an organic solvent to obtain the nano silver wire/stone needle;

5) dissolving 30-35 parts by weight of nano silver wires/stone needles in 40-60 parts by weight of polar solvent, adding 25-30 parts by weight of chitosan, magnetically stirring at room temperature for 30-60 min, and fully mixing to prepare uniform spinning solution; the concentration of the spinning solution is 1-65 wt%;

6) and spinning the spinning solution by using an electrostatic spinning device to obtain the nano silver wire/stone needle fiber material.

2. The preparation method of the nano silver wire/stone needle fiber antibacterial material according to claim 1 is characterized by comprising the following specific steps:

1) dissolving polyvinylpyrrolidone, iodide and stone needle powder in ethylene glycol, wherein the mass ratio of polyvinylpyrrolidone to iodide to stone needle powder is 200: 1: 40, fully stirring and dissolving to obtain a solution A;

2) dissolving silver nitrate in an ethylene glycol solution, and stirring until the silver nitrate is dissolved, so that the mass ratio of the stone needle powder to the silver nitrate is 2: 1, obtaining a solution B;

3) stirring and heating the solution A to 140-180 ℃, turning off the heating, and uniformly adding the solution B into the solution A;

4) after full reaction, quickly cooling to room temperature, stopping the reaction, and washing the reaction with an organic solvent for 3-5 times to obtain the nano silver wire stone needle;

5) dissolving 30-35 parts by weight of nano silver wire stone needle into 40-60 parts by weight of polar solvent, adding 25-30 parts by weight of chitosan, magnetically stirring at room temperature for 30-60 min, and fully mixing to prepare uniform spinning solution; the concentration of the spinning solution is 1-65%;

6) and spinning the spinning solution by using an electrostatic spinning device to obtain the nano silver wire/stone needle fiber material.

3. The preparation method of the nano silver wire/stone needle fiber antibacterial material according to claim 1, characterized by comprising the following steps: an anti-static composite system is added into the solution A, and the anti-static composite system comprises the following components in a mass ratio of 1: 2-5 of a mixture of mixed graphene powder and an antistatic fluid;

the preparation method of the antistatic fluid comprises the following steps:

(1) mixing the components in a mass ratio of 1: 1-3, grinding the mixed polytetrafluoroethylene and polyaniline to 30-150nm of particle size to obtain primary antistatic micro powder;

(2) mixing the primary antistatic micro powder and a modifier according to a mass ratio of 1: 2-3, carrying out modification treatment to obtain modified antistatic micro powder;

(3) adding the modified antistatic micro powder into butanol at the temperature of 40-60 ℃, and performing ultrasonic treatment and stirring for 60-120s to obtain the antistatic fluid.

4. The preparation method of the nano silver wire/stone needle fiber antibacterial material according to claim 3, characterized by comprising the following steps: the modifier comprises: expanded graphite, glycerol, sulfuric acid and a dimethyl pyrrolidone solution; the modification treatment comprises the following steps: adding the primary antistatic micro powder into 0.2-0.4mol/L hydrochloric acid solution, stirring at constant temperature of 25-35 deg.C for 5-10min, adding glycerol and dimethyl pyrrolidone solution, stirring for 15-20min, and adding expanded graphite.

5. The preparation method of the nano silver wire/stone needle fiber antibacterial material according to claim 4, characterized by comprising the following steps: the preparation method of the expanded graphite comprises the following steps: adding potassium permanganate and crystalline flake graphite into the mixture, stirring the mixture for 1 to 1.5 hours at constant temperature in a water bath of between 30 and 40 ℃, filtering the mixture, washing the mixture for multiple times by using deionized water, drying the washed mixture, and performing microwave action of 500-700W for 30 to 40 seconds to obtain the expanded graphite.

6. The preparation method of the nano silver wire/stone needle fiber antibacterial material according to any one of claims 1 to 5, characterized in that: in the step 1), the iodide is one or a combination of sodium iodide, potassium iodide and lithium iodide;

in the step 4), the organic solvent is one or a combination of acetone or ethanol.

7. The preparation method of the nano silver wire/stone needle fiber antibacterial material according to claim 6, characterized by comprising the following steps: in the step 5), the polar solvent is one or a combination of formic acid, glacial acetic acid or trifluoroacetic acid; the deacetylation degree of the chitosan is 80-100%.

8. The preparation method of the nano silver wire/stone needle fiber antibacterial material according to claim 7 is characterized in that: in the step 6), the technological parameters of electrostatic spinning are as follows: 1-50 kV, the receiving distance is 1-50 cm, and the solution flow is 0.01-20 mL/h.

9. A nano silver wire/stone needle fiber antibacterial material is characterized in that: the nano silver wire/stone needle fiber antibacterial material is prepared by the preparation method.

10. The application of the nano silver wire/stone needle fiber antibacterial material according to claim 9 is characterized by being applied to textile socks.

Technical Field

The invention relates to the field of fiber manufacturing, in particular to a preparation method of a nano silver wire/stone needle fiber antibacterial material, a product and application.

Background

Stone needles are known as magical stones and also as disease-treatable stones. An extremely precious rock variety with very little reserve is a microcrystalline limestone with calcium carbonate as the main chemical component. The microcrystalline limestone is mostly used as a traditional Chinese medicine physical therapy appliance, a health care product and the like, has no radioactivity and is harmless to a human body; the stone needle has a strange energy field, can generate infrared rays and ultrasonic waves when acting on a human body and can run along the channels, contacts the epidermis of the human body, and can clearly see the state of the accelerated flow of blood in small blood vessels and capillary vessels on a screen of a monitor of a microcirculation detector. Has effects in balancing body pH, promoting blood circulation, improving sub-health, caring skin, and promoting health.

Disclosure of Invention

In order to overcome the defects of the prior art, one of the purposes of the invention is to provide a preparation method of a nano silver wire/stone needle fiber antibacterial material.

Yet another object of the present invention is to: provides the nano silver wire/stone needle fiber antibacterial material product prepared by the method.

Yet another object of the present invention is to: applications of the above products are provided.

The first purpose of the invention is realized by the following scheme:

a preparation method of a nano silver wire/stone needle fiber antibacterial material comprises the following specific steps:

1) dissolving polyvinylpyrrolidone, iodide and stone needle powder in ethylene glycol, wherein the mass ratio of polyvinylpyrrolidone to iodide to stone needle powder is 160-260: 1: 30-50, fully stirring and dissolving to obtain a solution A;

2) dissolving silver nitrate in an ethylene glycol solution, stirring until the silver nitrate is dissolved, wherein the mass ratio of the silver nitrate to the stone needle powder is 1: 1-3, obtaining a solution B;

3) stirring and heating the solution A to 140-180 ℃, turning off the heating, and uniformly adding the solution B into the solution A;

4) after full reaction, quickly cooling to room temperature, stopping the reaction, and washing the reaction by using an organic solvent to obtain the nano silver wire/stone needle;

5) dissolving 30-35 parts by weight of nano silver wires/stone needles in 40-60 parts by weight of polar solvent, adding 25-30 parts by weight of chitosan, magnetically stirring at room temperature for 30-60 min, and fully mixing to prepare uniform spinning solution; the concentration of the spinning solution is 1-65 wt%;

6) and spinning the spinning solution by using an electrostatic spinning device to obtain the nano silver wire/stone needle fiber material.

According to the invention, the stone needle in the traditional Chinese medical therapy is used as a material to be added into the processing process of the antibacterial material, silver is a metal simple substance with a very good antibacterial and disinfection effect, and is widely applied to the antibacterial field, and the nano silver wire has better stability than nano silver particles and can be applied to the textile field; the silver nitrate is added to prepare the nano silver wire/stone needle fiber which can release infrared rays and is antibacterial, so that the conductivity of the fiber is further improved, and the prepared nano silver wire/stone needle fiber has the function of releasing infrared rays.

The invention provides a preparation method of a nano silver wire/stone needle fiber antibacterial material, wherein the nano silver wire has a larger specific surface area, so that more sites of the nano silver wire are in contact with bacterial colonies, and the antibacterial and bacteriostatic effects can be better achieved; according to the traditional Chinese medicine, the stone needle has the effects of soothing the nerves, regulating qi and blood and dredging channels and collaterals, certain treatment and health care functions are achieved through microcrystalline infrared rays and pulses, the stone needle fiber can promote blood circulation and help sleep, and the nano silver wire/stone needle fiber antibacterial material has the double functions of antibiosis and health care by combining the microcrystalline infrared rays and the microcrystalline infrared rays; the preparation process is relatively simple and easy to operate.

Preferably, the preparation method of the nano silver wire/stone needle fiber antibacterial material comprises the following specific steps:

1) dissolving polyvinylpyrrolidone, iodide and stone needle powder in ethylene glycol, wherein the mass ratio of polyvinylpyrrolidone to iodide to stone needle powder is 200: 1: 40, fully stirring and dissolving to obtain a solution A;

2) dissolving silver nitrate in an ethylene glycol solution, and stirring until the silver nitrate is dissolved, so that the mass ratio of the stone needle powder to the silver nitrate is 2: 1, obtaining a solution B;

3) stirring and heating the solution A to 140-180 ℃, turning off the heating, and uniformly adding the solution B into the solution A;

4) after full reaction, quickly cooling to room temperature, stopping the reaction, and washing the reaction with an organic solvent for 3-5 times to obtain the superfine nano silver wire stone needle;

5) dissolving 30-35 parts by weight of superfine nano silver wire stone needle into 40-60 parts by weight of polar solvent, adding 25-30 parts by weight of chitosan, magnetically stirring at room temperature for 30-60 min, and fully mixing to prepare uniform spinning solution; the concentration of the spinning solution is 1-65%;

6) and spinning the spinning solution by using an electrostatic spinning device to obtain the nano silver wire/stone needle fiber material.

Preferably, an antistatic composite system is added into the solution A, and the antistatic composite system comprises the following components in a mass ratio of 1: 2-5 of a mixture of mixed graphene powder and an antistatic fluid;

the preparation method of the antistatic fluid comprises the following steps:

(1) mixing the components in a mass ratio of 1: 1-3, grinding the mixed polytetrafluoroethylene and polyaniline to 30-150nm of particle size to obtain primary antistatic micro powder;

(2) mixing the primary antistatic micro powder and a modifier according to a mass ratio of 1: 2-3, carrying out modification treatment to obtain modified antistatic micro powder;

(3) adding the modified antistatic micro powder into butanol at the temperature of 40-60 ℃, and performing ultrasonic treatment and stirring for 60-120s to obtain the antistatic fluid.

Preferably, the modifier comprises: expanded graphite, glycerol, sulfuric acid and a dimethyl pyrrolidone solution.

Preferably, the modification treatment comprises: adding the primary antistatic micro powder into 0.2-0.4mol/L hydrochloric acid solution, stirring at constant temperature of 25-35 deg.C for 5-10min, adding glycerol and dimethyl pyrrolidone solution, stirring for 15-20min, and adding expanded graphite.

According to the invention, the glycerol, the dimethyl pyrrolidone and the expanded graphite are added to modify the primary antistatic micro powder, so that the obtained material has good electric conductivity and heat conductivity and better antistatic property.

More preferably, the method for preparing the expanded graphite comprises: adding potassium permanganate and crystalline flake graphite into the mixture, stirring the mixture for 1 to 1.5 hours at constant temperature in a water bath of between 30 and 40 ℃, filtering the mixture, washing the mixture for multiple times by using deionized water, drying the washed mixture, and performing microwave action of 500-700W for 30 to 40 seconds to obtain the expanded graphite.

The fabric made of the nano silver wire/stone needle fiber antibacterial material prepared by the method has the far infrared emissivity as high as 93 percent. The crystallinity of the nano silver wire/stone needle fiber is improved by adopting a combined process, and the breaking strength of the nano silver wire/stone needle fiber prepared by the method is 6.6-7.3 cN/dtex; the boiling water shrinkage is 1.8-2.5%.

Preferably, in the step 1), the iodide is one or a combination of sodium iodide, potassium iodide and lithium iodide.

Preferably, in the step 4), the organic solvent is one or a combination of acetone or ethanol.

Preferably, in the step 5), the polar solvent is one or a combination of formic acid, glacial acetic acid or trifluoroacetic acid; the deacetylation degree of the chitosan is 80-100%. The value of the deacetylation degree of the chitosan has an influence on the finally obtained antibacterial effect of the nano silver wire/stone needle fiber, and if the deacetylation degree of the chitosan is too small or too large, the antibacterial rate of the nano silver wire/stone needle fiber can be reduced.

Preferably, in the step 6), the electrostatic spinning process parameters are as follows: 1-50 kV, the receiving distance is 1-50 cm, and the solution flow is 0.01-20 mL/h.

Preferably, the electrostatic spinning device comprises a fixed base plate, the bottom end of the fixed base plate is fixedly connected with a mounting structure, one side of the bottom end of the fixed base plate is fixedly connected with a threading hole, the bottom end of the mounting structure is fixedly connected with an adjusting structure, and the bottom end of the adjusting structure is fixedly connected with a spinning structure.

Preferably, the mounting structure comprises a fixed clamping groove, a clamping groove is formed in the fixed clamping groove, a connecting screw rod is fixedly connected to the top end of the clamping groove, and an elastic metal ring is fixedly connected to the top end of the connecting screw rod.

Preferably, fixing slot's bottom is equipped with clamping screw, and fixing screw's top fixedly connected with and the inside draw-in groove fixture block of mutually supporting of fixing slot, fixing screw's surface is equipped with the external screw thread, fixing slot's inside is equipped with the internal thread of mutually supporting with fixing screw.

Preferably, the both sides fixedly connected with inflation strip on fixed screw top, and the junction of inflation strip and fixed slot and inside draw-in groove is block connection relation, the inflation strip is the annular distribution about fixed screw's axle center, the top of inflation strip is the appearance of outside expansion, the top fixedly connected with connecting screw of fixed slot inside draw-in groove, and connecting screw's top fixedly connected with elastic metal ring.

Preferably, adjust the structure and include connecting slot, fixed connection between connecting slot and the clamping screw, connecting slot's bottom is equipped with the connection fixture block, and is the block relation of parcel form between connection fixture block and the connection slot, connecting slot's both ends are equipped with the spout, connecting slot's both sides fixedly connected with fixed thread groove, and the inside intermediate position department of fixed thread groove is equipped with fixed knob, be the screw thread block relation between fixed knob and the fixed thread groove, one side fixedly connected with fixed plate of fixed knob, and the fixed plate is curved appearance.

Preferably, the spinning structure includes the connection joint groove, and the bottom of connecting the joint groove is equipped with the connection joint piece, be the screw thread block relation between connection joint piece and the connection joint groove, the top fixedly connected with elastic element of connection joint piece, the bottom fixedly connected with spinning metal head of connection joint piece, and the bottom at spinning metal head both ends is equipped with the through hole.

The electrostatic spinning device for the spinning solution not only realizes convenient installation and disassembly of the spinning head and convenient and timely angle adjustment, but also realizes convenient buffering of the spinning head:

(1) the spinning head is convenient to mount and dismount through the mounting structure, in order to reduce friction, the spinning head is required to be dismounted in time, oiling is convenient, and the purpose of reducing friction is achieved;

(2) the angle can be adjusted timely through the adjusting structure, the device is fixed after the angle is adjusted, the fixing effect can be eliminated after the angle is adjusted through the traditional device, the working principle of the adjusting structure is that the connecting clamping groove and the connecting clamping block are clamped, and the two sides of the connecting clamping groove are provided with fixing thread grooves;

(3) make the spinneret be convenient for cushion through the spinning structure, the in-process of spinning, the friction of great dynamics can aggravate the static that the spinneret produced, and the effect of spinning structure can reduce friction in the in-process syringe needle of weaving and cloth contact, reduces the static that the spinning metal head produced, through connecting joint groove and elastic element block, and inside is equipped with elastic element and is convenient for promote to connect the joint piece and remove to the bottom.

The second purpose of the invention is realized by the following scheme:

the invention provides a nano silver wire/stone needle fiber antibacterial material which is prepared according to any one of the methods.

The invention provides application of a nano silver wire/stone needle fiber antibacterial material in textile socks.

Socks in the current market have an antibacterial function, but have a common effect and cannot play a good protection role on skin. The stone needle is less applied to the textile socks, and the nano silver wire has larger specific surface area, so that more sites are in contact with bacterial colonies, and the antibacterial and bacteriostatic effects can be better achieved; through the double modification of the stone needle fibers and the nano silver, the socks can resist bacteria, promote the blood circulation of feet in the wiping process of the socks and skin and can help sleep; the combination of the two can make the sock have the functions of antibiosis and health care.

Compared with the prior art, the invention has the following beneficial effects:

1. the invention provides a preparation method of a nano silver wire/stone needle fiber antibacterial material, wherein the nano silver wire has a larger specific surface area, so that more sites of the nano silver wire are in contact with bacterial colonies, and the antibacterial and bacteriostatic effects can be better achieved; the stone needle fiber can promote blood circulation and is beneficial to sleep, and the combination of the two can enable the socks to have the double functions of antibiosis and health care; the preparation process is relatively simple and easy to operate;

2. the specific mounting structure of the electrostatic spinning device is convenient for mounting and dismounting the spinning head; the angle can be conveniently and timely adjusted through the adjusting structure; the spinning head is convenient to buffer through the spinning structure; therefore, the material obtained by spinning the nano silver wire/stone needle fiber antibacterial material has better performance, better fiber breaking strength and boiling water shrinkage; the crystallinity of the nano silver wire/stone needle fiber can be improved by adopting a combined process and specific equipment, and the breaking strength of the nano silver wire/stone needle fiber prepared by the method is 6.6-7.3 cN/dtex; the boiling water shrinkage is 1.8-2.5%.

Drawings

FIG. 1 is a schematic front sectional view of the present invention;

FIG. 2 is an enlarged partial schematic view of the mounting structure of the present invention;

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 1 according to the present invention;

fig. 4 is a partially enlarged schematic view of the spinning structure of the present invention.

In the figure: 1. fixing the bottom plate; 2. an adjustment structure; 201. fixing the knob; 202. fixing the thread groove; 203. a fixing plate; 204. connecting a clamping block; 205. a connecting clamping groove; 3. spinning structure; 301. connecting the clamping grooves; 302. an elastic element; 303. connecting the clamping blocks; 304. spinning a metal head; 4. a mounting structure; 401. an elastic metal ring; 402. connecting a screw rod; 403. fixing the clamping groove; 404. fixing the screw rod; 405. an expansion strip; 5. and (6) threading holes.

Detailed Description

The present invention is described in detail by the following specific examples, but the scope of the present invention is not limited to these examples.

The first embodiment is as follows:

1000g of polyvinylpyrrolidone, 5g of sodium iodide and 200g of stone needle powder are dissolved in ethylene glycol, wherein the mass ratio of the polyvinylpyrrolidone to the stone needle powder is 200: 1: 40, fully stirring and dissolving to obtain a solution A; dissolving 100g of silver nitrate in an ethylene glycol solution, and stirring until the silver nitrate is dissolved, wherein the mass ratio of the stone needle powder to the silver nitrate is 2: 1, obtaining a solution B; stirring and heating the solution A to 140 ℃, turning off the heating, and uniformly adding the solution B into the solution A; and after full reaction, quickly cooling to room temperature, stopping the reaction, and washing the reaction for 3 times by using an organic solvent acetone to obtain the nano silver wire/stone needle. Dissolving 30 parts by weight of nano silver wires/stone needles in 40 parts by weight of polar solvent formic acid, adding 30 parts by weight of chitosan into the solution, wherein the deacetylation degree of the chitosan is 80%, magnetically stirring the mixture at room temperature for 60min, and fully mixing the mixture to prepare a uniform spinning solution; the concentration of the spinning solution is 1%; spinning the spinning solution by using an electrostatic spinning device, wherein the process parameters of electrostatic spinning are as follows: 10 kilovolts, the receiving distance is 10 centimeters, the solution flow is 5mL/h, and the nano silver wire/stone needle fiber material is obtained.

The antibacterial result is as follows: the antibacterial rate of the escherichia coli is as follows: 99.2 percent; the antibacterial rate of staphylococcus aureus is as follows: 99.4 percent; the candida albicans is: 98.9 percent.

Socks prepared from nano silver wire/stone needle fiber antibacterial material and having fiber specific conductivity and resistance of 0.75 x 10³Omega cm, specific conductance after hundred washes 1.12 x 10³Ω*cm。

Example two:

1000g of polyvinylpyrrolidone, 5g of potassium iodide and 200g of stone needle powder are dissolved in ethylene glycol, wherein the mass ratio of the polyvinylpyrrolidone to the stone needle powder is 200: 1: 40, fully stirring and dissolving to obtain a solution A; dissolving 100g of silver nitrate in an ethylene glycol solution, and stirring until the silver nitrate is dissolved, wherein the mass ratio of the stone needle powder to the silver nitrate is 2: 1, obtaining a solution B; stirring and heating the solution A to 160 ℃, turning off the heating, and uniformly adding the solution B into the solution A; and after full reaction, quickly cooling to room temperature, stopping the reaction, and washing the reaction for 3 times by using an organic solvent ethanol to obtain the nano silver wire/stone needle. Dissolving 30 parts by weight of nano silver wires/stone needles in 50 parts by weight of polar solvent glacial acetic acid, adding 35 parts by weight of chitosan into the solution, wherein the deacetylation degree of the chitosan is 90%, magnetically stirring the solution at room temperature for 60min, and fully mixing the solution to prepare a uniform spinning solution; the concentration of the spinning solution is 5%; spinning the spinning solution by using an electrostatic spinning device, wherein the process parameters of electrostatic spinning are as follows: and (3) 20 kilovolts, the receiving distance is 20 centimeters, and the solution flow is 2mL/h, so that the nano silver wire/stone needle fiber material is obtained.

The antibacterial result is as follows: the antibacterial rate of the escherichia coli is as follows: 98.3 percent; the antibacterial rate of staphylococcus aureus is as follows: 98.1 percent; the candida albicans is: 98.6 percent.

Socks prepared from nano silver wire/stone needle fiber antibacterial material and having fiber specific conductivity and resistance of 0.75 x 10³Omega cm, specific conductance after hundred washes 1.12 x 10³Ω*cm。

Example three:

600g of polyvinylpyrrolidone, 3g of lithium iodide and 120g of stone needle powder are dissolved in ethylene glycol, wherein the mass ratio of the polyvinylpyrrolidone to the stone needle powder is 200: 1: 40, fully stirring and dissolving to obtain a solution A; dissolving 60g of silver nitrate in an ethylene glycol solution, and stirring until the silver nitrate is dissolved, so that the mass ratio of the stone needle powder to the silver nitrate is 2: 1, obtaining a solution B; stirring and heating the solution A to 180 ℃, turning off the heating, and uniformly adding the solution B into the solution A; and after full reaction, quickly cooling to room temperature, stopping the reaction, and washing the reaction for 3 times by using an organic solvent ethanol to obtain the nano silver wire/stone needle. Dissolving 30 parts by weight of nano silver wires/stone needles in 50 parts by weight of polar solvent trifluoroacetic acid, adding 35 parts by weight of chitosan into the solution, wherein the deacetylation degree of the chitosan is 90%, magnetically stirring the solution at room temperature for 60min, and fully mixing the solution to prepare a uniform spinning solution; the concentration of the spinning solution is 10%; spinning the spinning solution by using an electrostatic spinning device, wherein the process parameters of electrostatic spinning are as follows: 50 kilovolts, the receiving distance is 50 centimeters, the solution flow is 10mL/h, and the nano silver wire/stone needle fiber material is obtained.

The antibacterial result is as follows: the antibacterial rate of the escherichia coli is as follows: 99.5 percent; the antibacterial rate of staphylococcus aureus is as follows: 98.9 percent; the candida albicans is: 99.1 percent.

Socks prepared from nano silver wire/stone needle fiber antibacterial material and having fiber specific conductivity and resistance of 0.75 x 10³Ω*cmThe specific conductance after one hundred washes was 1.12 x 10³Ω*cm。

Example four

1) Dissolving polyvinylpyrrolidone, iodide and stone needle powder in ethylene glycol, wherein the mass ratio of polyvinylpyrrolidone to iodide to stone needle powder is 180: 1: 35, fully stirring and dissolving to obtain a solution A;

2) dissolving silver nitrate in an ethylene glycol solution, stirring until the silver nitrate is dissolved, wherein the mass ratio of the silver nitrate to the stone needle powder is 1: 2, obtaining a solution B;

3) stirring and heating the solution A to 160 ℃, turning off the heating, and uniformly adding the solution B into the solution A;

4) after full reaction, quickly cooling to room temperature, stopping the reaction, and washing the reaction by using an organic solvent to obtain the nano silver wire/stone needle;

5) dissolving 32 parts by weight of nano silver wire/stone needle in 50 parts by weight of polar solvent, adding 28 parts by weight of chitosan, magnetically stirring for 40min at room temperature, and fully mixing to prepare uniform spinning solution; the concentration of the spinning solution was 35 wt%;

6) and spinning the spinning solution by using an electrostatic spinning device to obtain the nano silver wire/stone needle fiber material.

In step 1), the iodide is one or a combination of sodium iodide, potassium iodide and lithium iodide.

In the step 4), the organic solvent is one or a combination of acetone or ethanol.

In the step 5), the polar solvent is one or the combination of formic acid, glacial acetic acid or trifluoroacetic acid; the degree of deacetylation of chitosan was 90%.

In the step 6), the technological parameters of electrostatic spinning are as follows: 30 kV, receiving distance 20 cm, solution flow rate 80 mL/h.

The solution A is added with an anti-static composite system, wherein the anti-static composite system comprises the following components in a mass ratio of 1: 3 a mixture of the mixed graphene powder and an antistatic fluid;

the preparation method of the antistatic fluid comprises the following steps:

(1) mixing the components in a mass ratio of 1: 2 grinding and crushing the mixed polytetrafluoroethylene and polyaniline to the particle size of 90nm to obtain primary antistatic micro powder;

(2) mixing the primary antistatic micro powder and a modifier according to a mass ratio of 1: 2, carrying out modification treatment to obtain modified antistatic micro powder; the modifier comprises: expanded graphite, glycerol, sulfuric acid and a dimethyl pyrrolidone solution; the modification treatment comprises the following steps: adding the primary antistatic micro powder into a 0.3mol/L hydrochloric acid solution, stirring for 7min at a constant temperature of 28 ℃, adding a glycerol and dimethyl pyrrolidone solution, continuously stirring for 18min, and adding expanded graphite;

the preparation method of the expanded graphite comprises the following steps: adding potassium permanganate and crystalline flake graphite into the mixture, stirring the mixture for 1.2 hours in a water bath at a constant temperature of 36 ℃, filtering the mixture, washing the mixture for multiple times by using deionized water, drying the washed mixture, and performing microwave action at 600W for 30 to 40 seconds to obtain expanded graphite;

(3) adding the modified antistatic micro powder into butanol at 50 ℃, and performing ultrasonic treatment and stirring for 80s to obtain the antistatic fluid.

The finally prepared nano silver wire/stone needle fiber has the following antibacterial result: the antibacterial rate of the escherichia coli is as follows: 99.4 percent; the antibacterial rate of staphylococcus aureus is as follows: 98.7 percent; the candida albicans is: 99.1 percent;

the far infrared emissivity of the material is as high as 93%. The breaking strength is 7.3 cN/dtex; the boiling water shrinkage was 2.5%.

Antistatic performance parameters: socks prepared from nano silver wire/stone needle fiber antibacterial material and having fiber specific conductivity and resistance of 0.68 x 10³Omega cm, specific conductance after hundred washes 1.05 x 10³Ω*cm。

EXAMPLE five

1) Dissolving polyvinylpyrrolidone, iodide and stone needle powder in ethylene glycol, wherein the mass ratio of polyvinylpyrrolidone to iodide to stone needle powder is 260: 1: 50, fully stirring and dissolving to obtain a solution A;

2) dissolving silver nitrate in an ethylene glycol solution, stirring until the silver nitrate is dissolved, wherein the mass ratio of the silver nitrate to the stone needle powder is 1: 3, obtaining a solution B;

3) stirring and heating the solution A to 180 ℃, turning off the heating, and uniformly adding the solution B into the solution A;

4) after full reaction, quickly cooling to room temperature, stopping the reaction, and washing the reaction by using an organic solvent to obtain the nano silver wire/stone needle;

5) dissolving 35 parts by weight of nano silver wire/stone needle in 60 parts by weight of polar solvent, adding 30 parts by weight of chitosan into the polar solvent, magnetically stirring the mixture at room temperature for 60min, and fully mixing the mixture to prepare uniform spinning solution; the concentration of the spinning solution was 65 wt%;

6) and spinning the spinning solution by using an electrostatic spinning device to obtain the nano silver wire/stone needle fiber material.

In step 1), the iodide is one or a combination of sodium iodide, potassium iodide and lithium iodide.

In the step 4), the organic solvent is one or a combination of acetone or ethanol.

In the step 5), the polar solvent is one or the combination of formic acid, glacial acetic acid or trifluoroacetic acid; the degree of deacetylation of chitosan was 100%.

In the step 6), the technological parameters of electrostatic spinning are as follows: 50 kV, receiving distance 50 cm, solution flow rate 20 mL/h.

The solution A is added with an anti-static composite system, wherein the anti-static composite system comprises the following components in a mass ratio of 1: 5, mixing the graphene powder and the antistatic fluid;

the preparation method of the antistatic fluid comprises the following steps:

(1) mixing the components in a mass ratio of 1: 3 grinding and crushing the mixed polytetrafluoroethylene and polyaniline to the particle size of 150nm to obtain primary antistatic micro powder;

(2) mixing the primary antistatic micro powder and a modifier according to a mass ratio of 1: 3, carrying out modification treatment to obtain modified antistatic micro powder; the modifier comprises: expanded graphite, glycerol, sulfuric acid and a dimethyl pyrrolidone solution; the modification treatment comprises the following steps: adding the primary antistatic micro powder into a 0.4mol/L hydrochloric acid solution, stirring for 10min at a constant temperature of 35 ℃, adding a glycerol and dimethyl pyrrolidone solution, continuously stirring for 20min, and adding expanded graphite;

the preparation method of the expanded graphite comprises the following steps: adding potassium permanganate and crystalline flake graphite into the mixture, stirring the mixture for 1.5 hours at a constant temperature of 40 ℃ in a water bath, filtering the mixture, washing the mixture for multiple times by using deionized water, drying the washed mixture, and performing microwave action of 700W for 40 seconds to obtain expanded graphite;

(3) adding the modified antistatic micro powder into butanol at 60 ℃, and performing ultrasonic treatment and stirring for 120s to obtain the antistatic fluid.

The finally prepared nano silver wire/stone needle fiber has the following antibacterial result: the antibacterial rate of the escherichia coli is as follows: 99.2 percent; the antibacterial rate of staphylococcus aureus is as follows: 98.5 percent; the candida albicans is: 99.0 percent;

the far infrared emissivity is as high as 93%; the breaking strength is 6.6 cN/dtex; the boiling water shrinkage was 1.8%.

Antistatic performance parameters: socks prepared from nano silver wire/stone needle fiber antibacterial material and having fiber specific conductivity and resistance of 0.69 x 10³Omega cm, specific conductance after hundred washes 1.08X 10³Ω*cm。

EXAMPLE six

1) Dissolving polyvinylpyrrolidone, iodide and stone needle powder in ethylene glycol, wherein the mass ratio of polyvinylpyrrolidone to iodide to stone needle powder is 160: 1: 30, fully stirring and dissolving to obtain a solution A;

2) dissolving silver nitrate in an ethylene glycol solution, stirring until the silver nitrate is dissolved, wherein the mass ratio of the silver nitrate to the stone needle powder is 1: 2, obtaining a solution B;

3) stirring and heating the solution A to 140 ℃, turning off the heating, and uniformly adding the solution B into the solution A;

4) after full reaction, quickly cooling to room temperature, stopping the reaction, and washing the reaction by using an organic solvent to obtain the nano silver wire/stone needle;

5) dissolving 30 parts by weight of nano silver wire/stone needle in 40 parts by weight of polar solvent, adding 25 parts by weight of chitosan into the polar solvent, magnetically stirring the mixture at room temperature for 30min, and fully mixing the mixture to prepare uniform spinning solution; the concentration of the spinning solution is 1-65 wt%;

6) and spinning the spinning solution by using an electrostatic spinning device to obtain the nano silver wire/stone needle fiber material.

In step 1), the iodide is one or a combination of sodium iodide, potassium iodide and lithium iodide.

In the step 4), the organic solvent is one or a combination of acetone or ethanol.

In the step 5), the polar solvent is one or the combination of formic acid, glacial acetic acid or trifluoroacetic acid; the degree of deacetylation of chitosan was 80%.

In the step 6), the technological parameters of electrostatic spinning are as follows: 1 kV, receiving distance 1 cm, solution flow rate 0.01 mL/h.

The solution A is added with an anti-static composite system, wherein the anti-static composite system comprises the following components in a mass ratio of 1: 2-5 of a mixture of mixed graphene powder and an antistatic fluid;

the preparation method of the antistatic fluid comprises the following steps:

(1) mixing the components in a mass ratio of 1: 1-3, grinding the mixed polytetrafluoroethylene and polyaniline to 30-150nm of particle size to obtain primary antistatic micro powder;

(2) mixing the primary antistatic micro powder and a modifier according to a mass ratio of 1: 2, carrying out modification treatment to obtain modified antistatic micro powder; the modifier comprises: expanded graphite, glycerol, sulfuric acid and a dimethyl pyrrolidone solution; the modification treatment comprises the following steps: adding the primary antistatic micro powder into a 0.2mol/L hydrochloric acid solution, stirring for 5min at a constant temperature of 25 ℃, adding a glycerol and dimethyl pyrrolidone solution, continuously stirring for 15-20min, and adding expanded graphite;

the preparation method of the expanded graphite comprises the following steps: adding potassium permanganate and crystalline flake graphite into the mixture, stirring the mixture for 1h at a constant temperature of 30 ℃ in a water bath, filtering the mixture, washing the mixture for multiple times by using deionized water, and then drying the washed mixture, wherein the expanded graphite is prepared under the action of 500W of microwave for 30-40 s;

(3) adding the modified antistatic micro powder into butanol at 40 ℃, and performing ultrasonic treatment and stirring for 60s to obtain the antistatic fluid.

The finally prepared nano silver wire/stone needle fiber has the following antibacterial result: the antibacterial rate of the escherichia coli is as follows: 99.1 percent; the antibacterial rate of staphylococcus aureus is as follows: 98.3 percent; the candida albicans is: 98.6 percent;

the far infrared emissivity is as high as 93%; the breaking strength is 6.8 cN/dtex; the boiling water shrinkage was 1.9%.

Antistatic performance parameters: socks prepared from nano silver wire/stone needle fiber antibacterial material and having fiber specific conductivity and resistance of 0.68 x 10³Omega cm, specific conductance after hundred washes 1.07 x 10³Ω*cm。

EXAMPLE seven

The method is similar to the first embodiment, except that an antistatic composite system is added into the solution A, and the antistatic composite system comprises the following components in a mass ratio of 1: 5, mixing the graphene powder and the antistatic fluid;

the preparation method of the antistatic fluid is the same as that of the fourth embodiment.

The finally prepared nano silver wire/stone needle fiber has the following antibacterial result: the antibacterial rate of the escherichia coli is as follows: 99.5 percent; the antibacterial rate of staphylococcus aureus is as follows: 98.9 percent; the candida albicans is: 99.1 percent;

the far infrared emissivity is as high as 93%; the breaking strength is 6.6 cN/dtex; the boiling water shrinkage was 1.8%.

Antistatic performance parameters: socks prepared from nano silver wire/stone needle fiber antibacterial material and having fiber specific conductivity and resistance of 0.65 x 10³Omega cm, specific conductance after hundred washes 1.02 x 10³Ω*cm。

Example eight

The method is similar to the second embodiment, except that an antistatic composite system is added into the solution A, and the antistatic composite system comprises the following components in a mass ratio of 1: 2, a mixture of the mixed graphene powder and an antistatic fluid;

the preparation method of the antistatic fluid is the same as that of the fifth embodiment.

The finally prepared nano silver wire/stone needle fiber has the following antibacterial result: the antibacterial rate of the escherichia coli is as follows: 99.5 percent; the antibacterial rate of staphylococcus aureus is as follows: 98.9 percent; the candida albicans is: 99.1 percent;

the far infrared emissivity of the material is as high as 93%. The breaking strength is 6.7 cN/dtex; the boiling water shrinkage was 1.9%.

Antistatic performance parameters: socks prepared from nano silver wire/stone needle fiber antibacterial material and having fiber specific conductivity and resistance of 0.64 x 10³Omega cm, specific conductance after hundred washes 1.04 x 10³Ω*cm。

Example nine

The method is similar to the third embodiment, except that an antistatic composite system is added into the solution A, and the antistatic composite system comprises the following components in a mass ratio of 1: 3 a mixture of the mixed graphene powder and an antistatic fluid;

the preparation method of the antistatic fluid is the same as that of the sixth embodiment.

The finally prepared nano silver wire/stone needle fiber has the following antibacterial result: the antibacterial rate of the escherichia coli is as follows: 99.5 percent; the antibacterial rate of staphylococcus aureus is as follows: 98.9 percent; the candida albicans is: 99.1 percent;

the far infrared emissivity of the material is as high as 93%. The breaking strength is 6.8 cN/dtex; the boiling water shrinkage was 1.8.

Antistatic performance parameters: socks prepared from nano silver wire/stone needle fiber antibacterial material and having fiber specific conductivity and resistance of 0.63 x 10³Omega cm, specific conductance after hundred washes 1.01 x 10³Ω*cm。

Example ten

The same as the seventh embodiment, except that the specific electrospinning device of the present invention is used in the electrospinning of step 6):

referring to fig. 1-4, an embodiment of the present invention is shown: an electrostatic spinning device for spinning solution comprises a fixed bottom plate 1, wherein the bottom end of the fixed bottom plate 1 is fixedly connected with a mounting structure 4;

the mounting structure 4 comprises a fixed clamping groove 403, a clamping groove is arranged in the fixed clamping groove 403, the top end of the clamping groove is fixedly connected with a connecting screw rod 402, the top end of the connecting screw rod 402 is fixedly connected with an elastic metal ring 401, the bottom end of the fixed clamping groove 403 is provided with a fixed screw rod 404, the top end of the fixed screw rod 404 is fixedly connected with a clamping block which is matched with the clamping groove in the fixed clamping groove 403, the surface of the fixed screw rod 404 is provided with external threads, the inside of the fixed clamping groove 403 is provided with internal threads matched with the fixed screw rod 404, two sides of the top end of the fixed screw rod 404 are fixedly connected with expansion strips 405, the connection parts of the expansion strips 405, the fixed clamping groove 403 and the internal clamping groove are in a clamping connection relationship, the expansion strips 405 are annularly distributed about the axis of the fixed screw rod 404, the top end of the expansion strips 405 is in an outward expansion shape, the top end of the internal clamping groove of the fixed clamping groove 403 is fixedly connected with the connecting screw rod 402, the top end of the connecting screw rod 402 is fixedly connected with an elastic metal ring 401;

specifically, as shown in fig. 1 and fig. 2, when the mechanism is used, firstly, the mounting structure 4 is used for facilitating mounting and dismounting of the spinning head, in order to reduce friction, the spinning head should be dismounted in time, oiling is facilitated, and the purpose of reducing friction is achieved, the mounting structure 4 has the working principle that the spinning head is clamped with the fixed clamping groove 403 through the fixed screw 404, the clamping block and the clamping groove which are arranged inside are clamped at the same time, the joint is further reinforced, the expansion strip 405 is inserted into the joint of the fixed clamping groove 403 and the internal clamping groove, so that the fixing effect is enhanced, the bottom end of the internal clamping groove of the fixed clamping groove 403 is provided with the connecting screw rod 402 and the elastic metal ring 401, so that clamping during clamping is avoided, and a certain moving space is provided;

one side of the bottom end of the fixed bottom plate 1 is fixedly connected with a threading hole 5, and the bottom end of the mounting structure 4 is fixedly connected with an adjusting structure 2;

the adjusting structure 2 comprises a connecting clamping groove 205, the connecting clamping groove 205 is fixedly connected with a fixing screw 404, a connecting clamping block 204 is arranged at the bottom end of the connecting clamping groove 205, the connecting clamping block 204 and the connecting clamping groove 205 are in a wrapping clamping relation, sliding grooves are arranged at two ends of the connecting clamping groove 205, fixing thread grooves 202 are fixedly connected to two sides of the connecting clamping groove 205, a fixing knob 201 is arranged at the middle position inside the fixing thread groove 202, a thread clamping relation is formed between the fixing knob 201 and the fixing thread grooves 202, a fixing plate 203 is fixedly connected to one side of the fixing knob 201, and the fixing plate 203 is in an arc shape;

specifically, as shown in fig. 1 and 3, when the mechanism is used, firstly, the angle can be adjusted in time conveniently by the adjusting structure 2, and the device is fixed after the angle is adjusted, the fixing effect can be abandoned after the angle is adjusted by the conventional device, the working principle of the adjusting structure 2 is that the connecting clamping groove 205 and the connecting clamping block 204 are clamped, the fixing thread groove 202 is arranged on two sides of the connecting clamping groove 205, and the fixing knob 201 penetrates through the fixing thread groove 202 and the connecting clamping block 204 to abut against each other, so that the fixing effect from other angles is achieved;

the bottom end of the adjusting structure 2 is fixedly connected with a spinning structure 3, the spinning structure 3 comprises a connecting clamping groove 301, the bottom end of the connecting clamping groove 301 is provided with a connecting clamping block 303, the connecting clamping block 303 and the connecting clamping groove 301 are in a threaded clamping relationship, the top end of the connecting clamping block 303 is fixedly connected with an elastic element 302, the bottom end of the connecting clamping block 303 is fixedly connected with a spinning metal head 304, and the bottom ends of the two ends of the spinning metal head 304 are provided with through holes;

specifically, as shown in fig. 1 and 4, when the mechanism is used, firstly, the spinning head is convenient to buffer through the spinning structure 3, in the spinning process, the static electricity generated by the spinning head can be aggravated by the friction with larger force, the effect of the spinning structure 3 can be reduced when a needle head is contacted with cloth in the spinning process, the static electricity generated by the spinning metal head 304 can be reduced, the spinning metal head is clamped with the elastic element 302 through the connecting clamping groove 301, the elastic element 302 is arranged in the spinning structure to facilitate the connecting clamping block 303 to move to the bottom end, the thread at the connecting position plays a role in delaying the stretching speed, and the bottom end of the spinning metal head 304 is provided with a through groove to facilitate the textile thread to pass through;

the working principle is as follows: when the spinning head is used, firstly, the spinning head is convenient to mount and dismount through the mounting structure 4, the mounting structure 4 is clamped with the fixed clamping groove 403 through the fixed screw 404, the clamping block and the clamping groove which are arranged inside are clamped simultaneously, the joint is further reinforced, the expansion strip 405 is inserted into the joint of the fixed clamping groove 403 and the internal clamping groove to achieve the effect of strengthening the fixing effect, the connecting screw rod 402 and the elastic metal ring 401 are arranged at the bottom end of the internal clamping groove of the fixed clamping groove 403, the clamping during clamping is avoided, and a certain moving space is formed.

Afterwards, the timely angle adjustment is facilitated through the adjusting structure 2, the operating principle of the adjusting structure 2 is that the connecting clamping groove 205 and the connecting clamping block 204 are clamped, the fixing thread groove 202 is arranged on two sides of the connecting clamping groove 205, and the fixing knob 201 penetrates through the fixing thread groove 202 to abut against the connecting clamping block 204, so that the fixing effect from other angles is achieved.

Finally, make the spinning head be convenient for cushion through spinning structure 3, spinning structure 3's effect, can reduce the friction in the in-process syringe needle of weaving and cloth contact, reduce the static that spinning metal head 304 produced, through connecting joint groove 301 and elastic element 302 block, inside is equipped with elastic element 302 and is convenient for promote to connect joint piece 303 and remove to the bottom, the screw thread of junction plays the effect that delays flexible speed, the bottom of spinning metal head 304 is equipped with and runs through the groove and is convenient for the braided wire to pass.

The finally prepared nano silver wire/stone needle fiber has the following antibacterial result: the antibacterial rate of the escherichia coli is as follows: 99.5 percent; the antibacterial rate of staphylococcus aureus is as follows: 98.9 percent; the candida albicans is: 99.1 percent;

the far infrared emissivity is as high as 93%; the breaking strength is 7.3 cN/dtex; the boiling water shrinkage was 2.3%.

Antistatic performance parameters: socks prepared from nano silver wire/stone needle fiber antibacterial material and having fiber specific conductivity and resistance of 0.62 x 10³Omega cm, specific conductance after hundred washes 1.01 x 10³Ω*cm。

EXAMPLE eleven

The same as the eighth embodiment, except that the specific electrostatic spinning device of the present invention is adopted in the electrostatic spinning of the step 6), and the structure of the device is the same as that of the tenth embodiment.

The finally prepared nano silver wire/stone needle fiber has the following antibacterial result: the antibacterial rate of the escherichia coli is as follows: 99.5 percent; the antibacterial rate of staphylococcus aureus is as follows: 98.9 percent; the candida albicans is: 99.1 percent;

the far infrared emissivity of the material is as high as 93%. The breaking strength is 7.2 cN/dtex; the boiling water shrinkage was 2.5%.

Antistatic performance parameters: socks prepared from nano silver wire/stone needle fiber antibacterial material and having fiber specific conductivity and resistance of 0.61 x 10³Omega cm, specific conductance after hundred washes 1.01 x 10³Ω*cm。

Example twelve

The same as the ninth embodiment, except that the specific electrostatic spinning device of the present invention is adopted in the electrostatic spinning of the step 6), and the structure of the device is the same as that of the tenth embodiment.

The finally prepared nano silver wire/stone needle fiber has the following antibacterial result: the antibacterial rate of the escherichia coli is as follows: 99.5 percent; the antibacterial rate of staphylococcus aureus is as follows: 98.9 percent; the candida albicans is: 99.1 percent;

the far infrared emissivity of the material is as high as 93%. The breaking strength is 7.1 cN/dtex; the boiling water shrinkage was 2.4%.

Antistatic performance parameters: socks prepared from nano silver wire/stone needle fiber antibacterial material and having fiber specific conductivity and resistance of 0.61*10³Omega cm, specific conductance after hundred washes 1.02 x 10³Ω*cm。

Comparative example 1

1) Dissolving polyvinylpyrrolidone, iodide and stone needle powder in ethylene glycol, wherein the mass ratio of polyvinylpyrrolidone to iodide to stone needle powder is 150: 1: 60, fully stirring and dissolving to obtain a solution A;

2) dissolving silver nitrate in an ethylene glycol solution, stirring until the silver nitrate is dissolved, wherein the mass ratio of the silver nitrate to the stone needle powder is 1: 1, obtaining a solution B;

3) stirring and heating the solution A to 130 ℃, turning off the heating, and uniformly adding the solution B into the solution A;

4) after full reaction, quickly cooling to room temperature, stopping the reaction, and washing the reaction by using an organic solvent to obtain the nano silver wire/stone needle;

5) dissolving 40 parts by weight of nano silver wire/stone needle in 35 parts by weight of polar solvent, adding 20 parts by weight of chitosan into the polar solvent, magnetically stirring the mixture at room temperature for 30min, and fully mixing the mixture to prepare uniform spinning solution; the concentration of the spinning solution is 1-65 wt%;

6) and spinning the spinning solution by using an electrostatic spinning device to obtain the nano silver wire/stone needle fiber material.

The antibacterial result is as follows: the antibacterial rate of the escherichia coli is as follows: 92.5 percent; the antibacterial rate of staphylococcus aureus is as follows: 93.9 percent; the candida albicans is: 99.1 percent; the far infrared emissivity is 85%; the breaking strength is 4.7 cN/dtex; the boiling water shrinkage was 1.7%. Antistatic performance parameters: socks prepared from nano silver wire/stone needle fiber antibacterial material and having fiber specific conductivity and resistance of 0.61 x 10³Omega cm, specific conductance after hundred washes is 0.93 x 10³Ω*cm。

Comparative example No. two

1) Dissolving polyvinylpyrrolidone, iodide and stone needle powder in ethylene glycol, wherein the mass ratio of polyvinylpyrrolidone to iodide to stone needle powder is 260: 1: 20, fully stirring and dissolving to obtain a solution A;

2) dissolving silver nitrate in an ethylene glycol solution, stirring until the silver nitrate is dissolved, wherein the mass ratio of the silver nitrate to the stone needle powder is 1: 3, obtaining a solution B;

3) stirring and heating the solution A to 200 ℃, turning off the heating, and uniformly adding the solution B into the solution A;

4) after full reaction, quickly cooling to room temperature, stopping the reaction, and washing the reaction by using an organic solvent to obtain the nano silver wire/stone needle;

5) dissolving 30 parts by weight of nano silver wires/stone needles in 70 parts by weight of polar solvent, adding 35 parts by weight of chitosan into the polar solvent, magnetically stirring the mixture at room temperature for 30-60 min, and fully mixing the mixture to prepare uniform spinning solution; the concentration of the spinning solution is 1-65 wt%;

6) and spinning the spinning solution by using a conventional spinning device to obtain the nano silver wire/stone needle fiber material.

The antibacterial result is as follows: the antibacterial rate of the escherichia coli is as follows: 92.6 percent; the antibacterial rate of staphylococcus aureus is as follows: 91.7 percent; the candida albicans is: 99.1 percent. The far infrared emissivity is 87%; the breaking strength is 4.6 cN/dtex; the boiling water shrinkage was 1.6%. Antistatic performance parameters: socks prepared from nano silver wire/stone needle fiber antibacterial material and having fiber specific conductivity and resistance of 0.62 x 10³Omega cm, specific conductance after hundred washes 0.94 x 10³Ω*cm。

From the experimental data of examples one to twelve and comparative examples one to two, it can be seen that:

1. the proportion of the solution A and the stirring temperature of the solution A influence the antibacterial rate of the nano silver wire/stone needle fiber material, wherein the mass ratio of polyvinylpyrrolidone to iodide to stone needle powder is 200: 1: the mixture ratio is optimal at 40;

2. when other conditions are the same, the solution A is added with an antistatic composite system, so that the nano silver wire/stone needle fiber with better far infrared emissivity and antistatic performance parameters can be obtained;

3. when other conditions are the same, the nano silver wire/stone needle fiber with better breaking strength, boiling water shrinkage and antistatic performance parameters can be obtained by adopting the specific electrostatic spinning device in the step 6) during electrostatic spinning.