TW201930663A - Conductive elastic fiber and method for fabricating the same - Google Patents

Abstract

A conductive elastic fiber and a method for fabricating the conductive elastic fiber are provided. The method for fabricating the conductive elastic fiber includes following steps. A first solution is provided, where the first solution includes an elastic polymer dissolved in a first solvent, wherein the weight ratio of the elastic polymer to the first solvent is from 5:95 to 20:80. A second solution is provided, where the second solution includes a conductive material dispersed in a second solvent, wherein the weight ratio of the conductive material to the second solvent is from 5:95 to 20:80. Next, a wet spinning process employing the first solution and the second solution is performed to obtain the conductive elastic fiber.

Description

Conductive elastic fiber and manufacturing method thereof

The present disclosure relates to a method of producing a conductive elastic fiber and a conductive elastic fiber.

In the textile fiber industry, conductive fibers are an important key material in the manufacture of smart textiles and wearable devices. Conventional conductive fibers are mainly composed of metal fibers, have strength and rigidity, but have no elasticity and stretchability, and thus are not comfortable to wear.

Conventional fibers used in apparel have better wearing comfort, but because the chemical structure does not have conjugate properties, it does not have conductive properties. In order to make the conventional fiber have electrical conductivity, the carbon black and the polymer material are generally mixed and extruded to form a master batch, and then subjected to spinning. However, this method requires the addition of more carbon black (more than 50%), so that the fiber strength is reduced by excessive carbon black addition. In addition, since carbon black is not compatible with a polymer, phase separation tends to occur, and conductivity is not easily improved. Another way to impart electrical conductivity to conventional fibers is to form the metal layer on the surface of the fiber by evaporation or surface chemical deposition. However, since the metal layer structure is weak and has no tensile properties, the metal layer is easily broken and loses conductivity after stretching.

Therefore, the industry needs a novel conductive fiber and a method of manufacturing the same. To solve the problems encountered in the prior art.

According to an embodiment of the present disclosure, the present disclosure provides a method of manufacturing a conductive elastic fiber, comprising the following steps. A first solution is provided, wherein the first solution comprises an elastic polymer dissolved in a first solvent, wherein the weight ratio of the elastic polymer to the first solution is from 5:95 to 20:80. A second solution is provided, wherein the second solution comprises a conductive material dispersed in a second solvent, wherein the weight ratio of the conductive material to the second solution is 5:95 to 20:80. Next, the first solution and the second solution are subjected to a wet spinning process to obtain the conductive elastic fiber.

According to another embodiment of the present disclosure, the present disclosure provides an electrically conductive elastic fiber. The conductive elastic fiber comprises an elastic polymer and a conductive material, wherein the weight ratio of the elastic polymer to the conductive material is 1:2 to 3:1.

10‧‧‧Electrical elastic fiber

11‧‧‧ Hollow

12‧‧‧Elastic polymer

13‧‧‧Shell Department

14‧‧‧Electrical materials

15‧‧‧ core

16‧‧‧Adhesive

17‧‧‧sheath

1 is a schematic cross-sectional view showing a conductive elastic fiber of the embodiment; FIG. 2 is a cross-sectional structural view showing a conductive elastic fiber according to some embodiments; and FIG. 3 is a cross-sectional structure of the conductive elastic fiber according to another embodiment of the present disclosure. schematic diagram.

Hereinafter, the method for producing the conductive elastic fiber and the conductive elastic fiber described in the present invention will be described in detail. It should be understood that the following description provides many different The embodiments or examples are used to implement the different aspects of the disclosure. The specific elements and arrangements described below are merely illustrative of the disclosure. Of course, these are only used as examples and not as a limitation of the disclosure. Moreover, repeated numbers or labels may be used in different embodiments. These repetitions are merely for the purpose of simplicity and clarity of the disclosure, and are not intended to represent any of the various embodiments and/or structures discussed. In the drawings, the shape, number, or thickness of the embodiments may be expanded and simplified or conveniently indicated. Furthermore, the components of the drawings will be described separately, and it is noted that the components not shown or described in the drawings are known to those of ordinary skill in the art and, in addition, The embodiments are merely illustrative of specific ways of using the disclosure, and are not intended to limit the disclosure.

The present disclosure provides a method for producing a conductive elastic fiber and a conductive elastic fiber, which is uniformly dispersed in an elastic polymer structure by a conductive material, or further combined with an adhesive to bond the conductive material with the elastic polymer to perform a wet spinning process. In this way, a conductive, elastic or core-sheath conductive electroconductive elastic fiber can be prepared. Further, in addition to being electrically conductive, the conductive elastic fiber of the present disclosure further has stretchability and improves mechanical strength.

According to an embodiment of the present disclosure, the present disclosure provides a method for manufacturing a conductive elastic fiber, comprising: providing a first solution, wherein the first solution comprises an elastic polymer dissolved in a first solvent, wherein the elastic polymer and the elastic polymer The first solution has a weight ratio of about 5:95 to 20:80 (eg, 7:93, 10:90, 12:88, 15:85, or 17:83); a second solution is provided, wherein the second solution The conductive material is dispersed in a second solvent, wherein the weight ratio of the conductive material to the second solution is about 5:95 to 20:80 (for example, 7:93, 10:90, 12:88, 15:85) , Or 17:83); and the first solution and the second solution are subjected to a wet spinning process to obtain the conductive elastic fiber.

According to an embodiment of the present disclosure, the first solution may have a solid content of about 5 wt% to 20 wt%; and the second solution may have a solid content of about 5 wt% to 20 wt%.

According to an embodiment of the present disclosure, the elastic polymer may be a polyurethane, a polyester, a styrene-butadiene-styrene resin (SBS), or a polyacrylonitrile-butadiene resin. (nitrile butadiene rubber, NBR), or a combination of the above. Further, according to some embodiments of the present disclosure, the elastic polymer may have a weight average molecular weight of from 10,000 g/mol to 500,000 g/mol, such as from 50,000 g/mol to 300,000 g/mol.

According to an embodiment of the present disclosure, the conductive material may be a conductive powder. Wherein, the conductive powder has an aspect ratio of about 1:2 to 2:1 (for example, 15:2, 1:1, or 2:1.5), and the conductive powder may have one grain The diameter is between about 0.1 μm and 10 μm (for example, 0.5 μm). According to some embodiments of the present disclosure, the electrically conductive material may be a rod-like conductive material or a conductive wire. Wherein, the rod-like conductive material or the conductive line has an aspect ratio of about 2:1 to 100:1 (for example, 5:1, 10:1, 20:1, 30) : 1, 50: 1 or 80: 1). The width of the rod-like conductive material or conductive line may be between about (10 nm and 0.2 [mu]m) (e.g., 70 nm). According to an embodiment of the present disclosure, the conductive material may be a metal or an alloy of the metal, wherein the metal may be gold, silver, copper, aluminum, nickel, or an alloy thereof. According to some embodiments of the present disclosure, the conductive material may be transparent A conductive material such as indium tin oxide (ITO), indium zinc oxide (IZO), indium gallium oxide (IGO), or indium gallium zinc oxide (IGZO). For example, the conductive material may be gold, silver, copper, aluminum, nickel, gold-containing alloy, silver-containing alloy, copper-containing alloy, aluminum-containing alloy, nickel-containing alloy, indium tin oxide (ITO) ), indium zinc oxide (IZO), indium gallium oxide (IGO), indium gallium zinc oxide (IGZO), or a combination thereof.

According to an embodiment of the present disclosure, the first solvent and the second solvent may be the same or different. For example, the first solvent and the second solvent may each independently be dimethyl formamide, dimethylacetamide, dimethylsulfone, tetrahydrofuran. , dichloromethane, chloroform, ethylene carbonate, propylene carbonate, or methylethyl ketone. According to an embodiment of the present disclosure, the first solvent and the second solvent are miscible.

According to an embodiment of the present disclosure, the second solution further comprises an adhesive, wherein the adhesive is dissolved in the second solvent, wherein the weight ratio of the conductive material to the adhesive is 1:2 to 50:1, for example, 1 : 1, 3: 1, 5: 1, 10: 1, 20: 1, 30: 1, or 40: 1. According to an embodiment of the present disclosure, the purpose of adding the adhesive is to bond the conductive material to the elastic polymer to avoid separation. According to some embodiments of the present disclosure, the adhesive may be a polymer or oligomer, wherein the adhesive may have a weight average molecular weight of from 10,000 g/mol to 500,000 g/mol, such as from 50,000 to 300,000). According to some embodiments of the present disclosure, the adhesive may be the elastic polymer. According to some embodiments of the present disclosure, the The weight average molecular weight of the adhesive is less than the weight average molecular weight of the elastic polymer. According to an embodiment of the present disclosure, the adhesive may be a polyurethane, a styrene-butadiene-styrene resin (SBS), or a nitrile butadiene rubber (NBR). Or a combination of the above.

According to an embodiment of the present disclosure, the present disclosure provides an electrically conductive elastic fiber. The conductive elastic fiber comprises an elastic polymer and a conductive material, wherein the weight ratio of the elastic polymer to the conductive material is about 1:2 to 3:1, for example, 1:1, 1.5:1, 2:1, or 2.5:1. If the weight ratio of the elastic polymer to the conductive material is too low, the tensile and mechanical strength of the obtained conductive elastic fiber may be lowered; and if the weight ratio of the elastic polymer to the conductive material is too high, the result may be easily The electrical resistance of the conductive elastic fiber is too large. According to an embodiment of the present disclosure, the conductive elastic fiber of the present disclosure may have a fiber fineness of 0.05 mm to 2 mm (for example, 0.1 mm to 1.5 mm, 0.2 mm to 1.2 mm, 0.3 mm to 1.0 mm, 0.4 mm to 0.9 mm, or 0.5). From mm to 0.8 mm), the resistivity may be from about 0.1 Ω/cm to 1000 Ω/cm (for example, 0.1 Ω/cm to 500 Ω/cm, 0.1 Ω/cm to 300 Ω/cm, 0.1 Ω/cm to 200 Ω/cm), 0.1 Ω/cm to 100 Ω/cm, 0.1 Ω/cm to 60/Ω/cm, 0.1 Ω/cm to 50/Ω/cm, 0.1 Ω/cm to 10 Ω/cm, 0.1 Ω/cm to 3 Ω/cm, or 0.3 Ω/cm to 1 Ω/cm).

According to the embodiment of the present disclosure, please refer to FIG. 1 , which is a schematic cross-sectional view of the conductive elastic fiber 10 disclosed herein. As shown in FIG. 1, the conductive elastic fiber 10 may be a solid conductive elastic fiber, and the conductive elastic fiber 10 is composed of an elastic polymer 12 and a conductive material 14. According to the disclosed embodiment, the conductive The elastic fiber 10 is composed of an elastic polymer 12, a conductive material 14, and an adhesive (not shown). According to an embodiment of the present disclosure, the weight ratio of the elastic polymer to the conductive material is about 1:2 to 3:1, such as 1:1, 1.5:1, 2:1, or 2.5:1.

According to an embodiment of the present disclosure, the method of manufacturing the solid conductive elastic fiber of FIG. 1 may include the following steps. First, the first solution and the second solution described above are provided. Then, the first solution and the second solution are mixed to obtain a third solution, wherein the weight ratio of the first solution to the second solution is about 1:2 to 3:1. It should be noted that the first solvent and the second solvent are mutually soluble, and the elastic polymer needs to be soluble in the second solvent. Next, wet spinning is performed using the third solution as a weaving liquid to obtain the solid conductive elastic fiber. According to other embodiments of the present disclosure, the second solution may further include the above adhesive, wherein the adhesive is dissolved in the second solvent, wherein the weight ratio of the conductive material to the adhesive is 1:2 to 50:1, For example, 1:1, 3:1, 5:1, 10:1, 20:1, 30:1, or 40:1. In addition, the adhesive also needs to be soluble in the first solvent.

According to the embodiment of the present disclosure, please refer to FIG. 2 , which is a schematic cross-sectional view of the conductive elastic fiber 10 of the present disclosure. As shown in FIG. 2, the conductive elastic fiber 10 may be a hollow conductive elastic fiber, wherein the hollow conductive elastic fiber includes a hollow portion 11 and a shell portion 13, wherein the shell portion 13 is composed of an elastic polymer 12 and a conductive material 14. Composition. According to the embodiment of the present disclosure, the shell portion 13 is composed of an elastic polymer 12, a conductive material 14, and an adhesive (not shown). According to an embodiment of the present disclosure, the hollow portion 11 and the shell portion 13 of the hollow conductive elastic fiber may have a volume ratio of about 3:1 to 1:3. According to an embodiment of the present disclosure, the weight ratio of the elastic polymer to the conductive material is about 1:2 to 3:1, such as 1:1, 1.5:1, 2:1, or 2.5:1.

According to the embodiment of the present disclosure, the method of manufacturing the hollow conductive elastic fiber of FIG. 2 may include the following steps. First, the first solution and the second solution described above are provided. Then, the first solution and the second solution are mixed to obtain a third solution, wherein the weight ratio of the first solution to the second solution is about 1:2 to 3:1. It should be noted that the first solvent and the second solvent are mutually soluble, and the elastic polymer needs to be soluble in the second solvent. Next, water was used as the inner spinning spinning solution and the obtained third solution was used as an outer spinning spinning solution, and wet-spinning was carried out through a double-spinning spinning device to obtain the hollow conductive elastic fiber. According to other embodiments of the present disclosure, the second solution may further include the above adhesive, wherein the adhesive is dissolved in the second solvent, wherein the weight ratio of the conductive material to the adhesive is 1:2 to 50:1, For example, 1:1, 3:1, 5:1, 10:1, 20:1, 30:1, or 40:1. In addition, the adhesive also needs to be soluble in the first solvent.

According to the embodiment of the present disclosure, please refer to FIG. 3 , which is a schematic cross-sectional view of the conductive elastic fiber 10 disclosed herein. As shown in FIG. 3, the conductive elastic fiber 10 may be a conductive elastic fiber having a core-sheath structure, wherein the core-sheath structure is composed of a core portion 15 and a sheath portion 17, wherein the core portion 15 contains the elastic portion. A polymer, and the sheath portion includes the conductive material 14 and the adhesive 16. According to the embodiment of the present disclosure, the core portion 15 is composed of the elastic polymer, and the sheath portion 17 is composed of the conductive material 14 and the adhesive 16. According to an embodiment of the present disclosure, the volume ratio of the core portion 15 and the sheath portion 17 of the electroconductive elastic fiber having a core-sheath structure may be about 3:1 to 1:3. Here, the weight ratio of the conductive material to the adhesive may be about 1:2 to 3:1, such as 1.5:2, 1:1, 1.5:1, 2:1, or 2.5:1. If the weight ratio of the conductive material to the adhesive is too low, the resistance value of the obtained conductive elastic fiber is easily caused. If the weight ratio of the conductive material to the adhesive is too high, the sheath portion of the obtained conductive elastic fiber is likely to be separated from the core.

According to the embodiment of the present disclosure, the method of manufacturing the conductive elastic fiber having a core-sheath structure according to FIG. 3 may include the following steps. First, the first solution and the second solution described above are provided. Next, the first solution is used as an inner spinning spinning solution, and the second solution is used as an outer spinning spinning solution, and is wet-spun through a double-spinning spinning device to obtain the core-sheath structure. Conductive elastic fiber. According to another embodiment of the present disclosure, the first solution comprises the above elastic polymer dissolved in the first solvent, wherein the weight ratio of the elastic polymer to the first solution is about 5:95 to 20:80 (for example, 7: 93, 10:90, 12:88, 15:85, or 17:83). The second solution comprises the above conductive material dispersed in the second solvent, and the adhesive is dissolved in the second solvent, wherein the weight ratio of the total weight of the conductive material to the adhesive to the second solution is about 5 : 95 to 20:80 (for example, 7:93, 10:90, 12:88, 15:85, or 17:83). According to an embodiment of the present disclosure, the weight ratio of the conductive material to the adhesive may be about 1:2 to 50:1, such as 1:1, 3:1, 5:1, 10:1, 20:1, 30: 1, or 40:1. According to an embodiment of the present disclosure, the first solution is composed of the elastic polymer and the first solvent; and the second solution is composed of the conductive material and the adhesive. According to an embodiment of the present disclosure, the first solution may have a solid content of about 5 wt% to 20 wt%; and the second solution may have a solid content of about 5 wt% to 20 wt%.

The above and other objects, features, and advantages of the present invention will become more apparent and understood.

Preparation of conductive elastic fiber

Example 1:

A polyurethane (as an elastic polymer) (manufactured by Formosa Asahi spandex, trade name: Roica) was dissolved in N,N-dimethylacetamide to obtain a first solution (solid content: 15% by weight). Further, a nano silver wire (as a conductive material) (having a diameter of 60 nm and a length of 22 μm) was dispersed in N,N-dimethylacetamide to obtain a second solution (solid content: 15% by weight). . Next, the first solution was added to the second solution (the ratio of the first solution to the second solution was 1:1). Subsequently, the mixture was stirred at 60 ° C for 120 minutes (stirring speed was 200 rpm), and the nano silver wire in the obtained mixed solution was sufficiently dispersed in the polyurethane solution. Next, the obtained mixed solution was used as a spinning solution, and wet-spinning was performed by a spinning apparatus to obtain a solid conductive elastic fiber (1). The spinning conditions are as follows: the diameter of the spout is 0.7 mm; the spinning temperature is 60 ° C; the liquid discharge speed is 2 cc / min; the spinning speed is 6.5 m / min; the coagulation bath is pure water; and the coagulation bath temperature is 40 ° C . Next, the fiber fineness of the conductive elastic fiber (1) was measured with an electron microscope (JEOL JSM6480), and the resistance value of the conductive elastic fiber (1) was measured by a micro-resistance meter (Hioki RM3544) (resistance) ), the results are shown in Table 1.

Example 2:

A polyurethane (as an elastic polymer) (manufactured by Formosa Asahi spandex, trade name: Roica) was dissolved in N,N-dimethylacetamide to obtain a first solution (solid content: 15% by weight). Further, a nano silver wire (as a conductive material) (having a diameter of 60 nm and a length of 22 μm) was dispersed in N,N-dimethylacetamide to obtain a second solution (solid content: 15% by weight). . Next, the first solution was added to the second solution (the ratio of the first solution to the second solution was 1:1). Next, it was stirred at 60 ° C for 120 minutes (stirring speed was 200 rpm), and the obtained mixed solution was made up of nanometer. The silver wire can be sufficiently dispersed in the polyurethane solution. Next, wet spinning was carried out using a twin-spinning spinning apparatus, and the obtained mixed solution was used as an outer spinning spinning solution, and pure water was used as an inner spinning spinning solution to obtain a hollow conductive elastic fiber (2). The spinning conditions are as follows: the inner spinning mouth diameter is 0.4 mm; the outer spinning opening diameter is 0.6 mm; the spinning temperature is 60 ° C; the inner spinning outlet liquid velocity is 0.6 cc / min; the outer spinning opening liquid velocity is 1.2 cc / Min; spinning speed was 5 m/min; the coagulation bath was pure water; and the coagulation bath temperature was 40 °C. Next, the fiber fineness of the conductive elastic fiber (2) was measured with an electron microscope (JEOL JSM6480), and the resistance value of the conductive elastic fiber (2) was measured by a micro-resistance meter (Hioki RM3544) (resistance) ), the results are shown in Table 1.

Example 3:

A polyurethane (as an elastic polymer) (manufactured by Formosa Asahi spandex, trade name: Roica) was dissolved in N,N-dimethylacetamide to obtain a first solution (solid content: 15% by weight). In addition, a nano silver wire (as a conductive material) (a diameter of 60 nm, a length of 22 μm) and an adhesive (commercial number U3251, purchased from Anfeng Industrial) were dispersed in dimethylacetamide (N, N). -dimethyl acetamide), a second solution (solids content of 15% by weight) was obtained, wherein the weight ratio of the nano silver wire to the adhesive was 1:1. Next, wet spinning is performed using a twin-spinning spinning apparatus, the first solution is used as an inner spinning spinning solution, and the second solution is used as an outer spinning spinning solution to obtain conductivity having a core-sheath structure. Elastic fiber (3) (wherein the elastic polymer constitutes the core, and the nano silver wire and the adhesive constitute the sheath). The spinning conditions were as follows: the inner spinning opening diameter was 0.4 mm; the outer spinning opening diameter was 0.6 mm; the spinning temperature was 60 ° C; the inner spinning outlet liquid velocity was 1.0 cc/min; and the outer spinning opening liquid velocity was 1.2 cc/ Min; spinning speed was 5 m/min; the coagulation bath was pure water; and the coagulation bath temperature was 40 °C. Next, take an electron microscope (JEOL JSM6480) The fiber fineness of the conductive elastic fiber (3) was measured, and the resistance of the conductive elastic fiber (3) was measured by a micro-resistance meter (Hioki RM3544). The results are shown in Table 1. Show.

Example 4:

A polyurethane (as an elastic polymer) (manufactured by Formosa Asahi spandex, trade name: Roica) was dissolved in N,N-dimethylacetamide to obtain a first solution (solid content: 15% by weight). Further, a nano silver wire (as a conductive material) (having a diameter of 60 nm and a length of 22 μm) and an adhesive (commercial number U3251, available from Anfeng Industrial) were dispersed in dimethylacetamide (N, N-). Dimethyl acetamide) gave a second solution (solids content 15% by weight) in which the weight ratio of nano silver wire to adhesive was 4:3. Next, wet spinning is performed using a twin-spinning spinning apparatus, the first solution is used as an inner spinning spinning solution, and the second solution is used as an outer spinning spinning solution to obtain conductivity having a core-sheath structure. Elastic fiber (4) (wherein the elastic polymer constitutes the core, and the nano silver wire and the adhesive constitute the sheath). The spinning conditions were as follows: the inner spinning opening diameter was 0.4 mm; the outer spinning opening diameter was 0.6 mm; the spinning temperature was 60 ° C; the inner spinning outlet liquid velocity was 1.0 cc/min; and the outer spinning opening liquid velocity was 1.2 cc/ Min; spinning speed was 5 m/min; the coagulation bath was pure water; and the coagulation bath temperature was 40 °C. Next, the fiber fineness of the conductive elastic fiber (4) was measured with an electron microscope (JEOL JSM6480), and the resistance value of the conductive elastic fiber (4) was measured by a micro-resistance meter (Hioki RM3544) (resistance) ), the results are shown in Table 1.

Example 5:

The polyurethane (as an elastic polymer) (manufactured by Formosa Asahi spandex, product number Roica) was dissolved in N, N-dimethyl acetamide to obtain A first solution (solids content 15% by weight). Further, a nano silver wire (as a conductive material) (having a diameter of 60 nm and a length of 22 μm) and an adhesive (commercial number U3251, available from Anfeng Industrial) were dispersed in dimethylacetamide (N, N-). Dimethyl acetamide) gave a second solution (solids content 15% by weight) in which the weight ratio of nano silver wire to adhesive was 3:2. Next, wet spinning is performed using a twin-spinning spinning apparatus, the first solution is used as an inner spinning spinning solution, and the second solution is used as an outer spinning spinning solution to obtain conductivity having a core-sheath structure. Elastic fiber (5) (wherein the elastic polymer constitutes the core, and the nano silver wire and the adhesive constitute the sheath). The spinning conditions were as follows: the inner spinning opening diameter was 0.4 mm; the outer spinning opening diameter was 0.6 mm; the spinning temperature was 60 ° C; the inner spinning outlet liquid velocity was 1.0 cc/min; and the outer spinning opening liquid velocity was 1.2 cc/ Min; spinning speed was 5 m/min; the coagulation bath was pure water; and the coagulation bath temperature was 40 °C. Next, the fiber fineness of the conductive elastic fiber (5) was measured with an electron microscope (JEOL JSM6480), and the resistance value of the conductive elastic fiber (5) was measured by a micro-resistance meter (Hioki RM3544) (resistance) ), the results are shown in Table 1.

Example 6

A polyurethane (as an elastic polymer) (manufactured by Formosa Asahi spandex, trade name: Roica) was dissolved in N,N-dimethylacetamide to obtain a first solution (solid content: 15% by weight). Further, a nano silver wire (as a conductive material) (having a diameter of 60 nm and a length of 22 μm) and an adhesive (polystyrene/butadiene, manufactured by JSR, trade number TRD1002) were dispersed in dimethylacetamide. (N, N-dimethyl acetamide), a second solution (solid content of 15% by weight) was obtained, wherein the weight ratio of the nano silver wire to the adhesive was 1:1. Next, wet spinning is performed using a twin-spinning spinning device, the first solution is used as an inner spinning spinning solution, and the second solution is used as an outer spinning spun yarn. The liquid is obtained as a conductive elastic fiber (6) having a core-sheath structure (wherein the elastic polymer constitutes the core portion, and the nano silver wire and the adhesive constitute the sheath portion). The spinning conditions were as follows: the inner spinning opening diameter was 0.4 mm; the outer spinning opening diameter was 0.6 mm; the spinning temperature was 60 ° C; the inner spinning outlet liquid velocity was 1.0 cc/min; and the outer spinning opening liquid velocity was 1.2 cc/ Min; spinning speed was 5 m/min; the coagulation bath was pure water; and the coagulation bath temperature was 40 °C. Next, the fiber fineness of the conductive elastic fiber (6) was measured with an electron microscope (JEOL JSM6480), and the resistance value of the conductive elastic fiber (6) was measured by a micro-resistance meter (Hioki RM3544) (resistance) ), the results are shown in Table 1.

Comparative example 1

Further, a nano silver wire (as a conductive material) (having a diameter of 22 nm and a length of 22 μm) was dispersed in N, N-dimethyl acetamide to obtain a first solution (solid content: 7.5 wt%). ). Next, a polyurethane (as an elastic polymer) (manufactured by Formosa Asahi spandex, product number Roica) was added to the first solution at 60 ° C and a stirring speed of 200 rpm, wherein the weight of the polyurethane and the first solution was The ratio is 7.5:100. After stirring for 12 hours, it was observed that the polyurethane was still not dissolved, and the solution precipitated as a gel, showing a phase separation phenomenon, and the spinning process could not be performed.

In summary, the method for manufacturing the conductive elastic fiber can be prepared by uniformly dispersing a conductive material in an elastic polymer or further bonding an adhesive to a conductive polymer to prepare a solid, hollow or conductive material. It is an elastic fiber with a core-sheath structure.

The present disclosure has been disclosed in the above several embodiments, but it is not intended to limit the disclosure, and any one skilled in the art can make any changes and refinements without departing from the spirit and scope of the disclosure. Therefore, the scope of protection of this disclosure is subject to the definition of the scope of the patent application.

Claims (20)

A method for producing a conductive elastic fiber, comprising: providing a first solution, wherein the first solution comprises an elastic polymer dissolved in a first solvent, wherein the weight ratio of the elastic polymer to the first solution is 5: 95至20:80; providing a second solution, wherein the second solution comprises a conductive material dispersed in a second solvent, wherein the weight ratio of the conductive material to the second solution is 5:95 to 20:80; And performing the wet spinning process on the first solution and the second solution to obtain the conductive elastic fiber. The method for producing a conductive elastic fiber according to claim 1, wherein the elastic polymer is a polyurethane, a polyester, or a styrene-butadiene-styrene resin. SBS), nitrile butadiene rubber (NBR), or a combination thereof. The method for producing a conductive elastic fiber according to claim 1, wherein the conductive material is a conductive powder, a rod-like conductive material, or a conductive wire. The method for producing a conductive elastic fiber according to claim 1, wherein the conductive material is a metal or an alloy of the metal, wherein the metal is gold, silver, copper, aluminum, or nickel. The manufacturer of the conductive elastic fiber as described in claim 1 of the patent application scope The method wherein the conductive material is a transparent conductive material. The method for producing a conductive elastic fiber according to claim 1, wherein the first solution and the second solution are each independently a dimethyl formamide or a dimethylacetamide. ), dimethylsulfone, tetrahydrofuran, dichloromethane, chloroform, ethylene carbonate, propylene carbonate, or methyl ethyl Ketone (methylethyl ketone). The method for producing a conductive elastic fiber according to claim 1, wherein the second solution further comprises an adhesive, wherein the adhesive is dissolved in the second solvent, wherein the conductive material and the weight of the adhesive The ratio is 1:2 to 50:1. The method for producing a conductive elastic fiber according to claim 7, wherein the adhesive is a polymer or an oligomer. The method for producing a conductive elastic fiber according to claim 8, wherein the adhesive is a polyurethane, a styrene-butadiene-styrene resin (SBS), a polyacrylonitrile- A butadiene butadiene rubber (NBR), or a combination thereof. The method for producing a conductive elastic fiber according to claim 1, wherein the first spinning solution and the second solution are subjected to a wet spinning process comprising the steps of: mixing the first solution and the second solution, Obtaining a third solution, wherein The first solvent and the second solvent are mutually soluble, and the elastic polymer is dissolved in the second solvent; and the third solution is used as a weaving liquid for wet spinning. The method for producing a conductive elastic fiber according to claim 10, wherein the weight ratio of the first solution to the second solution is from 1:2 to 3:1. The method for producing a conductive elastic fiber according to claim 1, wherein the first spinning solution and the second solution are subjected to a wet spinning process comprising the steps of: mixing the first solution and the second solution, Obtaining a third solution, wherein the first solvent and the second solvent are mutually soluble, and the elastic polymer is dissolved in the second solvent; and water is used as the inner spinning spinning solution, and the third solution is obtained As an outer spinning spinning solution, it is wet-spun through a double-spinning spinning device. The method for producing a conductive elastic fiber according to claim 12, wherein the weight ratio of the first solution to the second solution is from 1:2 to 3:1. The method for producing a conductive elastic fiber according to claim 7, wherein the first spinning solution and the second solution are subjected to a wet spinning process comprising the steps of: using the first solution as an inner spinning spinning solution And the second solution is used as an outer spinning dope and is wet-spun through a double-spinning spinning device. An electrically conductive elastic fiber comprising: an elastic polymer and a conductive material, wherein the elastic polymer and the guide The weight ratio of the electrical material is from 1:2 to 3:1. The conductive elastic fiber according to claim 15, wherein the conductive elastic fiber is a solid conductive elastic fiber. The conductive elastic fiber according to claim 15, wherein the conductive elastic fiber is a hollow conductive elastic fiber. The conductive elastic fiber according to claim 15, further comprising an adhesive, wherein the weight ratio of the conductive material to the adhesive is 1:2 to 50:1. The conductive elastic fiber according to claim 18, wherein the conductive elastic fiber is a conductive elastic fiber having a core-sheath structure, wherein the core-sheath structure is composed of a core portion and a sheath portion, wherein the core portion The elastic polymer is included, and the sheath portion includes the conductive material and the adhesive. The conductive elastic fiber according to claim 18, wherein the adhesive is a polymer or an oligomer.