Bio-based material conductive fiber, fabric and production process

Abstract

This application relates to the field of textile technology, and specifically discloses a bio-based material conductive fiber, fabric and production process. In this application, bio-based nylon fiber is used as a substrate, and polyaniline is loaded on the surface of the bio-based nylon fiber by in-situ polymerization to obtain a bulk conductive fiber, and a conductive coating is further coated on the surface of the bulk conductive fiber to obtain a bio-based material conductive fiber. The bio-based material conductive fiber of this application not only has good electrical conductivity, but also has less loss of electrical conductivity after being washed with water, thus overcoming the defects in the related technology and being able to better meet the needs of clothing and wearable devices.

Description

Technical Field

[0001] This application relates to the technical field of textiles. More specifically, it relates to a bio-based material conductive fiber, fabric, and production process. Background Art

[0002] Conductive fibers generally refer to fibers with a conductivity greater than 10 -7 S / cm under standard atmospheric pressure, and have wide applications in fields such as daily life, industrial production, and national defense and military industries. Most traditional conductive fibers were developed for antistatic purposes, and their predecessors were various common chemical fibers. In the past, researchers generally used strategies such as blending, grafting, and adding surfactants to improve the hygroscopicity of the fibers to promote the dissipation of surface charges. However, the conductive fibers prepared by these methods have high requirements for environmental humidity.

[0003] With the emergence of new concepts such as wearable devices and smart textiles, the research and development boom of conductive fibers has risen again. Currently, the preparation methods of conductive fibers mainly include post-treatment, conductive particle filling, and direct spinning of intrinsic conductive polymers, etc. Among them, the post-treatment method has the characteristics of simple process, low cost, and low volume resistivity of the obtained fibers, and thus has attracted much attention. The coating method is a commonly used post-treatment process, and its principle is to load a conductive material (such as carbon black) on the surface of the matrix fiber.

[0004] Regarding the above related technologies, the inventor believes that although the coating method can obtain conductive fibers, it also has the disadvantage that the conductive material is prone to fall off, especially the conductive effect will decrease significantly after washing, so it is difficult to meet the requirements of producing clothing and wearable devices. Summary of the Invention

[0005] In the related technologies, the conductive fibers prepared by the coating method have the disadvantage that the conductive material is prone to fall off, especially the conductive effect will decrease significantly after washing, so it is difficult to meet the requirements of producing clothing and wearable devices. To improve this defect, this application provides a bio-based material conductive fiber, fabric, and production process.

[0006] In the first aspect, this application provides a bio-based material conductive fiber, adopting the following technical solution:

[0007] A bio-based material conductive fiber, the conductive fiber comprising a main body conductive fiber and a conductive coating, the main body conductive fiber being a bio-based nylon fiber with a polyaniline coating grown in situ on its surface, and the conductive coating covering the surface of the main body conductive fiber; the conductive coating is formed by curing a conductive paste, and the conductive paste comprises the following components by weight percentage: 8-12% of polyaniline particles, 2.4-2.8% of polyaniline nanotubes, 4.6-5.2% of a conductive aid, 6.5-8.5% of a polyurethane binder, and the balance is made up to 100% with DMAC; camphorsulfonic acid is doped in the polyaniline particles, polyaniline nanotubes, and polyaniline coating, and the conductive aid comprises a carbonaceous conductive material and antimony tin oxide nanoparticles.

[0008] By adopting the above technical solution, the present application uses a bio-based nylon fiber as a substrate, and loads polyaniline on the surface of the bio-based nylon fiber by in-situ polymerization to obtain a main body conductive fiber, and further coats the conductive coating on the surface of the main body conductive fiber to obtain a bio-based material conductive fiber. Among the raw materials selected in the present application, the doping of camphorsulfonic acid can optimize the structure of polyaniline, thereby improving the conductive performance of the polyaniline particles, polyaniline nanotubes, and polyaniline coating; the combination of the carbonaceous conductive material and antimony tin oxide nanoparticles is also conducive to the efficient conduction of current, thus creating favorable conditions for the improvement of the conductive performance. Through the synergistic cooperation of the polyaniline particles, polyaniline nanotubes, conductive aid, and polyaniline coating, a complex conductive network can be formed inside the bio-based material conductive fiber, and various components achieve a synergistic conductive effect, enabling the bio-based material conductive fiber to have good conductive performance. Moreover, since the polyaniline coating is continuously distributed on the surface of the main body conductive fiber, even if components such as polyaniline particles, polyaniline nanotubes, and conductive aid in the conductive coating are lost during washing, it is not easy to have an obvious impact on the conductive network. It can be seen that the bio-based material conductive fiber of the present application not only has good conductive performance, but also has less loss of conductive performance after being washed with water, thus overcoming the defects in the related art and being able to better meet the requirements of clothing and wearable devices.

[0009] Preferably, the carbonaceous conductive material comprises at least one of nanocarbon black, carbon nanotubes, and graphite.

[0010] By adopting the above technical solution, adopting the above several carbonaceous conductive materials helps to improve the conductive performance of the bio-based material conductive fiber.

[0011] Preferably, the conductive aid further comprises silver nanowires.

[0012] By adopting the above technical solution, silver nanowires have a relatively low resistance, and can enhance the conduction effect of current in the conductive coating through a one-dimensional structure, and can effectively improve the conductive performance of the bio-based material conductive fiber.

[0013] Preferably, the dosage of the silver nanowires is 15-25% of the total weight of the carbonaceous conductive material.

[0014] By adopting the above technical solution, the application preferably determines the dosage range of the silver nanowires, which helps to improve the electrical conductivity of the conductive fibers of the biobased material.

[0015] Preferably, the silver nanowires are prepared according to the following method:

[0016] (1) Polyvinylpyrrolidone is added to ethylene glycol and mixed to obtain a PVP solution for standby; silver nitrate is added to ethylene glycol to obtain a silver salt solution for standby; ferric chloride and copper chloride are added to ethylene glycol to obtain a chloride salt solution for standby;

[0017] (2) The silver salt solution and the chloride salt solution are added to the PVP solution, stirred, and then subjected to a hydrothermal reaction, followed by centrifugal separation. The obtained solid product is washed and dried to obtain silver nanowires.

[0018] By adopting the above technical solution, the application uses ferric chloride and copper chloride together as a controlling agent and realizes the preparation of silver nanowires by the polyol method. Ferric chloride can reduce the etching of silver twins caused by oxygen / chloride ions, while copper chloride can make the silver nanowires have a larger aspect ratio, which helps to improve the electrical conductivity of the conductive fibers of the biobased material.

[0019] Preferably, the bulk conductive fiber is prepared according to the following method:

[0020] (1) Aniline and an organic acid are dissolved in a hydrochloric acid solution to obtain a raw material solution for standby; ammonium persulfate is added to water to obtain an initiator solution for standby; the organic acid used in this step includes camphorsulfonic acid;

[0021] (2) The biobased nylon fiber and a surfactant are added to the raw material solution, and then the initiator solution is added. The reaction is carried out successively at room temperature and in an ice-water bath, and then the fiber is taken out and washed with water, and dried to obtain the bulk conductive fiber.

[0022] By adopting the above technical solution, the application first prepares a raw material solution containing aniline, and then uses ammonium persulfate in the raw material solution to initiate the polymerization of aniline, forming a polyaniline coating layer on the surface of the biobased nylon fiber, and realizing doping through hydrochloric acid and camphorsulfonic acid to obtain the bulk conductive fiber.

[0023] Preferably, in step (2) of preparing the bulk conductive fiber, nano-crystalline cellulose is further added to the raw material solution.

[0024] By adopting the above technical solution, during the in-situ polymerization of polyaniline, nano-crystalline cellulose can adsorb aniline cations and act as a deposition carrier for polyaniline, promoting the dispersion of polyaniline, reducing the large aggregation of polyaniline, facilitating the full realization of the doping of hydrochloric acid and organic acids, and helping to improve the electrical conductivity of the bio-based material conductive fiber.

[0025] Preferably, in step (1) of preparing the bulk conductive fiber, the organic acid used further includes sulfosalicylic acid.

[0026] By adopting the above technical solution, the doping of sulfosalicylic acid can delocalize more positive charges onto the aromatic ring, which is beneficial to the charge transition, thereby improving the electrical conductivity of the bio-based material conductive fiber.

[0027] In a second aspect, the present application provides a fabric, adopting the following technical solution.

[0028] A fabric is woven from the bio-based material conductive fiber described in any one of the above.

[0029] By adopting the above technical solution, the fabric made of the above bio-based material conductive fiber has good electrical conductivity, and the electrical conductivity has high wash stability, which can better meet the requirements of producing clothing and wearable devices.

[0030] In a third aspect, the present application provides a method for preparing a bio-based material conductive fiber, adopting the following technical solution.

[0031] A method for preparing a bio-based material conductive fiber includes the following steps:

[0032] (1) Mix fiber-grade polyurethane and DMAC to obtain a binder solution, grind and screen polyaniline to obtain polyaniline particles, and mix the polyaniline particles, conductive aids, and binder solution to obtain a conductive paste for standby;

[0033] (2) Immerse the bulk conductive fiber in the conductive paste, take it out after soaking, and perform drying and curing;

[0034] (3) Repeat the operation of step (2) 7 - 10 times to obtain the bio-based material conductive fiber.

[0035] By adopting the above technical solution, the present application first prepares a conductive paste and then repeatedly loads the conductive paste, which can fully realize the coating of the conductive coating on the bulk conductive fiber, helping to improve the electrical conductivity of the bio-based material conductive fiber.

[0036] In summary, the present application has the following beneficial effects:

[0037] 1. The bio-based material conductive fiber of the present application not only has good electrical conductivity, but also has less loss of electrical conductivity after being washed with water, thus overcoming the defects in the related art and being able to better meet the needs of producing clothing and wearable devices.

[0038] 2. In the present application, silver nanowires are preferably used as conductive aids. Silver nanowires have a relatively low resistance, and can enhance the conduction effect of current in the conductive coating through a one-dimensional structure, effectively improving the electrical conductivity of the bio-based material conductive fiber.

[0039] 3. In the method for preparing the bulk conductive fiber of the present application, nanocrystalline cellulose is added. Nanocrystalline cellulose can adsorb aniline cations and act as a deposition carrier for polyaniline, promoting the dispersion of polyaniline, reducing the large aggregation of polyaniline, helping to fully achieve the doping of hydrochloric acid and organic acids, and improving the electrical conductivity of the bio-based material conductive fiber. Specific Embodiments

[0040] The present application will be further described in detail below with reference to examples, preparation examples and comparative examples. The raw materials involved in the present application can all be obtained commercially.

[0041] Preparation Example of Silver Nanowires

[0042] Taking Preparation Example 1 as an example for illustration below.

[0043] Preparation Example 1

[0044] In this preparation example, the silver nanowires are prepared according to the following method:

[0045] (1) Add 0.8 g of polyvinylpyrrolidone to 110 mL of ethylene glycol and mix. After stirring and dissolving, a PVP solution is obtained and reserved; add silver nitrate to ethylene glycol to obtain a 10 mL silver salt solution with a concentration of 0.05 mol / L and reserve it; add ferric chloride and copper chloride to ethylene glycol to obtain a 15 mL chloride salt solution with a concentration of 0.05 mmol / L for both iron ions and copper ions and reserve it;

[0046] (2) Add the silver salt solution and the chloride salt solution to the PVP solution. After stirring for 15 min, carry out a hydrothermal reaction at 140 °C for 12 h, then carry out centrifugal separation, wash and dry the obtained solid product to obtain silver nanowires.

[0047] Preparation Example of Bulk Conductive Fiber

[0048] Taking Preparation Example 2 as an example for illustration below.

[0049] Preparation Example 2

[0050] In this preparation example, the bio-based nylon fiber is made of PA510. The draw ratio of the bio-based nylon fiber is 3.5 times, the linear density is 97 dtex, and the breaking strength is 5.3 cN / dtex.

[0051] In this preparation example, the bulk conductive fiber is prepared according to the following method:

[0052] (1) Dissolve 0.04 mol of aniline and 0.02 mol of camphorsulfonic acid in 40 mL of hydrochloric acid solution with a concentration of 2 mol / L to obtain a raw material solution for standby; dissolve 0.05 mol of ammonium persulfate in 40 mL of water to obtain an initiator solution for standby;

[0053] (2) Add 0.025 g of bio-based nylon fiber and 0.01 mol of surfactant (sodium dodecylbenzenesulfonate) to the raw material solution, then add the initiator solution, and react for 24 h at 25 °C room temperature and 0 °C ice bath respectively. Then take out the fiber for washing with water, and obtain the bulk conductive fiber after drying.

[0054] Preparation Example 3

[0055] The difference between this preparation example and Preparation Example 2 is that in step (2) of preparing the bulk conductive fiber, nano-crystalline cellulose is also added to the raw material solution, and the dosage of nano-crystalline cellulose is 5% of the weight of aniline in step (1).

[0056] Preparation Example 4

[0057] The difference between this preparation example and Preparation Example 1 is that in step (1) of preparing the bulk conductive fiber, the organic acid added to the hydrochloric acid solution also includes sulfosalicylic acid, and the molar ratio of sulfosalicylic acid to camphorsulfonic acid is 1:1.

[0058] Examples 1 - 5

[0059] The following takes Example 1 as an example for illustration.

[0060] Example 1

[0061] In this example, the bulk conductive fiber is prepared according to the method of Preparation Example 2, and camphorsulfonic acid is doped in both polyaniline particles, polyaniline nanotubes, and polyaniline coating layers; the average particle size of polyaniline particles is 10 μm, and the doping rate of camphorsulfonic acid is 13%; the average inner diameter of polyaniline nanotubes is 150 nm, the average outer diameter is 280 nm, the average length is 2 μm, and the doping rate of camphorsulfonic acid is 20%. The conductive aid is composed of a carbonaceous conductive material and nano-antimony tin oxide. The carbonaceous conductive material is selected as nano-carbon black, and the weight ratio of the carbonaceous conductive material to nano-antimony tin oxide is 1:1.

[0062] This embodiment provides a bio-based material conductive fiber, which includes a main body conductive fiber and a conductive coating, and the conductive coating is coated on the surface of the main body conductive fiber; the conductive coating is formed by curing a conductive paste, and the conductive paste includes the following components by weight percentage: 8% of polyaniline particles, 2.4% of polyaniline nanotubes, 4.6% of a conductive auxiliary agent, 6.5% of a polyurethane binder, and the balance is made up to 100% with DMAC.

[0063] This embodiment also provides a fabric, which is woven from the bio-based material conductive fiber, and the surface density is 200 g / m 2 .

[0064] This embodiment also provides a preparation method of the bio-based material conductive fiber, which includes the following steps:

[0065] (1) Mix fiber-grade polyurethane and DMAC to obtain a binder solution, grind and screen polyaniline to obtain polyaniline particles, and mix the polyaniline particles, the conductive auxiliary agent and the binder solution to obtain a conductive paste for standby;

[0066] (2) Immerse the main body conductive fiber into the conductive paste, take it out after soaking for 10 min, and dry and cure it with hot air;

[0067] (3) Repeat the operation of step (2) 7 times to obtain the bio-based material conductive fiber.

[0068] As shown in Table 1, the differences between Examples 1-5 mainly lie in the raw material ratio of the conductive paste and the number of repetitions of step (2) (abbreviated as dip-coating times in Table 1).

[0069] Table 1 Raw material ratio of the conductive paste and dip-coating times

[0070]

[0071] Example 6

[0072] The difference between this embodiment and Example 5 is that the carbonaceous conductive material is composed of a mixture of nano carbon black and graphite (powder, average particle size 35 μm) in a weight ratio of 4:1.

[0073] Example 7

[0074] The difference between this embodiment and Example 6 is that the carbonaceous conductive material is composed of a mixture of nano carbon black and carbon nanotubes in a weight ratio of 4:1.

[0075] Example 8

[0076] The difference between this embodiment and Example 7 is that the conductive auxiliary agent further includes silver nanowires, and the dosage of the silver nanowires is 10% of the total weight of the carbonaceous conductive material.

[0077] Example 9

[0078] The difference between this example and Example 8 is that the dosage of silver nanowires is 15% of the total weight of the carbonaceous conductive material.

[0079] Example 10

[0080] The difference between this example and Example 8 is that the dosage of silver nanowires is 20% of the total weight of the carbonaceous conductive material.

[0081] Example 11

[0082] The difference between this example and Example 8 is that the dosage of silver nanowires is 25% of the total weight of the carbonaceous conductive material.

[0083] Example 12

[0084] The difference between this example and Example 11 is that ferric chloride is not added during the preparation of silver nanowires.

[0085] Example 13

[0086] The difference between this example and Example 11 is that copper chloride is not added during the preparation of silver nanowires.

[0087] Example 14

[0088] The difference between this example and Example 11 is that the bulk conductive fiber is prepared according to the method of Preparation Example 3.

[0089] Example 15

[0090] The difference between this example and Example 14 is that the bulk conductive fiber is prepared according to the method of Preparation Example 4. Comparative Example

[0091] Comparative Example 1

[0092] The difference between this comparative example and Example 1 is that the bulk conductive fiber is replaced with a bio-based nylon fiber made of PA510.

[0093] Comparative Example 2

[0094] The difference between this comparative example and Example 1 is that the surface of the bulk conductive fiber has no conductive coating.

[0095] Comparative Example 3

[0096] The difference between this comparative example and Example 1 is that the components of the conductive paste do not include polyaniline particles.

[0097] Comparative Example 4

[0098] The difference between this comparative example and Example 1 is that the components of the conductive paste do not include polyaniline nanotubes.

[0099] Comparative Example 5

[0100] The difference between this comparative example and Example 1 is that the components of the conductive paste do not include conductive aids.

[0101] Comparative Example 6

[0102] The difference between this comparative example and Example 1 is that the conductive aids do not include carbonaceous conductive materials.

[0103] Comparative Example 7

[0104] The difference between this comparative example and Example 1 is that the conductive aids do not include antimony tin oxide nanoparticles.

[0105] Comparative Example 8

[0106] The difference between this example and Example 1 is that in the method for preparing the bulk conductive fiber, camphorsulfonic acid is replaced with hydrochloric acid in an equimolar amount.

[0107] Performance Detection Test Method

[0108] I. Conductivity Test

[0109] Use an insulation resistance meter to clamp the bio-based material conductive fibers of each example and comparative example, and measure the resistance of the conductive fibers under the conditions of 25 °C and an air humidity of 35%. Then calculate the resistivity ρ according to ρ = RS / L. Based on the resistivity of Comparative Example 1, calculate the ratio between the resistivity of each example and comparative example and the resistivity of Example 1, and record the result as the relative resistivity. The results are shown in Table 2.

[0110] II. Wash Resistance Test

[0111] Wash the fibers according to the method recorded in "GB / T 12014-1989", wash for 5 minutes each time, and after washing 200 times, dry the fibers under the conditions of 25 °C and an air humidity of 35%. Use an insulation resistance meter to detect the washed fibers to obtain the resistivity of the fibers, which is recorded as the resistivity after washing. Based on the resistivity after washing of Comparative Example 1, calculate the ratio between the resistivity after washing of each example and comparative example and the resistivity after washing of Example 1, and record the result as the relative resistivity after washing. The results are shown in Table 2.

[0112] Table 2 Relative Resistivity

[0113]

[0114] Combined with Examples 1-5 and Comparative Example 1 and in conjunction with Table 2, it can be seen that the relative resistivity and the relative resistivity after washing measured in Examples 1-5 are both relatively low, indicating that under the synergistic effect of each component, the bio-based material conductive fiber of the present application has good electrical conductivity, and the electrical conductivity loss after high-strength water washing is less, thus being able to better meet the requirements of clothing and wearable devices. In Comparative Example 1, the surface of the bio-based nylon fiber lacks the in-situ polymerized polyaniline coating layer, and the conductive network formed only by components such as polyaniline particles, polyaniline nanotubes, and conductive aids is relatively weak, and the damage caused by the washing process to the conductive network is relatively large. Therefore, the conductive fiber in Comparative Example 1 has poor electrical conductivity and poor water washing stability.

[0115] Combined with Comparative Example 1 and Comparative Example 2 and in conjunction with Table 2, it can be seen that the relative resistivity measured in Comparative Example 2 is relatively high, while the relative resistivity after washing is relatively low, indicating that although the polyaniline coating layer is water-wash resistant, the electrical conductivity achieved without being combined with the conductive coating is relatively limited.

[0116] Combined with Example 1, Comparative Example 1 and Comparative Examples 3-7 and in conjunction with Table 2, it can be seen that when at least one of polyaniline particles, polyaniline nanotubes, carbonaceous conductive materials, and antimony tin oxide nanoparticles is missing in the conductive paste, the relative resistivity and the relative resistivity after washing measured are both between Example 1 and Comparative Example 1, indicating that although the bio-based material conductive fiber has a certain water washing stability, the conductive effect is still not good.

[0117] Combined with Comparative Example 1 and Comparative Example 8 and in conjunction with Table 2, it can be seen that when camphorsulfonic acid is not doped in the polyaniline coating layer, due to the structure of the polyaniline coating layer not being further optimized, the electrical conductivity of the bio-based material conductive fiber is poor.

[0118] Combined with Example 5 and Examples 6-7 and in conjunction with Table 2, it can be seen that when nanocarbon black is respectively compounded with carbon nanotubes and graphite, the bio-based material conductive fiber has good electrical conductivity.

[0119] Combined with Example 7, Examples 8-11 and in conjunction with Table 2, it can be seen that the addition of silver nanowires helps to improve the electrical conductivity of the bio-based material conductive fiber, and when the dosage of silver nanowires is 15-25% of the total weight of the carbonaceous conductive material, the electrical conductivity of the bio-based material conductive fiber is relatively better.

[0120] Combined with Example 11, Examples 12-13 and in conjunction with Table 2, it can be seen that when any one of ferric chloride and copper chloride is not added in the method for preparing silver nanowires, the electrical conductivity of the bio-based material conductive fiber is poor, indicating that the morphology of the silver nanowires is not ideal and the contribution to the electrical conductivity is relatively limited.

[0121] Combined with Example 11 and Example 14 and in conjunction with Table 2, it can be seen that the relative resistivity measured in Example 14 is lower. This is because nano-crystalline cellulose can adsorb aniline cations and act as a deposition carrier for polyaniline, promoting the dispersion of polyaniline, reducing the massive aggregation of polyaniline, and contributing to the full realization of the doping of hydrochloric acid and organic acids, thereby improving the electrical conductivity of the bio-based material conductive fiber.

[0122] Combined with Example 14 and Example 15 and in conjunction with Table 2, it can be seen that the relative resistivity measured in Example 15 is lower. This is because the doping of sulfosalicylic acid can delocalize more positive charges onto the aromatic ring, facilitating the transition of charges, thereby improving the electrical conductivity of the bio-based material conductive fiber.

[0123] The above embodiments are merely explanations of the present application and do not limit the present application. After reading this specification, those skilled in the art can make modifications to the embodiments of the present application that do not contribute creatively, but as long as they are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. A bio-based material conductive fiber, characterized in that, The conductive fiber includes a body conductive fiber and a conductive coating. The body conductive fiber is a bio-based nylon fiber with a polyaniline coating grown in situ on its surface, and the conductive coating covers the surface of the body conductive fiber. The conductive coating is formed by curing a conductive paste, and the conductive paste includes the following components by weight percentage: 8-12% of polyaniline particles, 2.4-2.8% of polyaniline nanotubes, 4.6-5.2% of a conductive aid, 6.5-8.5% of a polyurethane binder, and the balance is made up to 100% with DMAc. The polyaniline particles, polyaniline nanotubes, and polyaniline coating are doped with camphorsulfonic acid. The conductive aid includes a carbonaceous conductive material and antimony-doped tin oxide nanoparticles. The body conductive fiber is prepared according to the following method: (1) Dissolve aniline and an organic acid in a hydrochloric acid solution to obtain a raw material solution for standby. Dissolve ammonium persulfate in water to obtain an initiator solution for standby. The organic acid used in this step includes camphorsulfonic acid. (2) Add the bio-based nylon fiber and a surfactant to the raw material solution, then add the initiator solution, react successively at room temperature and in an ice-water bath, then take out the fiber and wash it with water, and obtain the body conductive fiber after drying. In this step, nano-crystalline cellulose is also added to the raw material solution.

2. The bio-based material conductive fiber according to claim 1, characterized in that, The carbonaceous conductive material includes at least one of nano-carbon black, carbon nanotubes, and graphite.

3. The bio-based material conductive fiber according to claim 2, characterized in that, The conductive aid further includes silver nanowires.

4. The bio-based material conductive fiber according to claim 3, characterized in that, The dosage of the silver nanowires is 15-25% of the total weight of the carbonaceous conductive material.

5. The bio-based material conductive fiber according to claim 3, wherein The silver nanowires are prepared according to the following method: (1) Mix polyvinylpyrrolidone with ethylene glycol to obtain a PVP solution for standby. Dissolve silver nitrate in ethylene glycol to obtain a silver salt solution for standby. Dissolve ferric chloride and copper chloride in ethylene glycol to obtain a chloride salt solution for standby. (2) Add the silver salt solution and the chloride salt solution to the PVP solution, carry out a hydrothermal reaction after stirring, then carry out centrifugal separation, and wash and dry the obtained solid product to obtain silver nanowires.

6. The bio-based material conductive fiber according to claim 1, characterized in that, In step (1) of preparing the body conductive fiber, the organic acid used also includes sulfosalicylic acid.

7. A fabric, characterized in that, It is woven from the bio-based material conductive fiber according to any one of claims 1-6.

8. The preparation method of the bio-based material conductive fiber according to any one of claims 1-6, characterized in that, It includes the following steps: (1) Mix fiber-grade polyurethane and DMAc to obtain a binder solution, grind and screen polyaniline to obtain polyaniline particles, mix the polyaniline particles, polyaniline nanotubes, conductive aid, and binder solution to obtain a conductive paste for standby. (2) Immerse the body conductive fiber in the conductive paste, take it out after soaking, and carry out drying and curing. (3) Repeat the operation in step (2) 7-10 times to obtain the bio-based material conductive fiber.

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