CN111850736A

CN111850736A - Conductive fiber, spinning pack and preparation method thereof

Info

Publication number: CN111850736A
Application number: CN201910364989.7A
Authority: CN
Inventors: 冯培; 杨崇倡; 杨芊竹; 张荣根
Original assignee: Donghua University
Current assignee: Donghua University; National Dong Hwa University
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2020-10-30

Abstract

The invention discloses a conductive fiber, a spinneret assembly and a preparation method. The conductive fiber has a continuous conductive core formed by pure conductive materials, has ultrahigh conductivity, and is low in equipment cost, small in occupied space and easy to control.

Description

Conductive fiber, spinning pack and preparation method thereof

Technical Field

The invention relates to a fiber, in particular to a conductive fiber, a spinning pack and a preparation method.

Background

With the improvement of life quality, the performance requirements of functional fibers, such as conductive fibers, of people are higher and higher. The conductive fiber has excellent static electricity eliminating and preventing performance much higher than that of the antistatic fiber.

The existing carbon black fiber is a conductive fiber prepared by mixing carbon black and fiber-forming substances and adopting a sheath-core spinning method, but the existing carbon black fiber lacks toughness, is not resistant to bending and has no thermal contraction capacity, the carbon black coated on the outer layer is easy to fall off, the conductivity is reduced, and the spinning process is not easy to control; the existing conductive metal compound fiber is spun by a method of blending a metal material and a polymer melt, a conductive metal medium is mixed in the polymer melt, the cost is high, and the spinning process is not easy to control; the existing conductive polymer fiber is an organic conductive fiber prepared by directly spinning polymer conductive materials such as polyacetylene, polyaniline, polypyrrole, polythiophene and the like, but special equipment and components are needed, so that spinning is difficult, and the cost is increased.

Disclosure of Invention

In order to solve the problems, the invention provides the conductive fiber, which reduces the using amount of conductive materials and ensures the conductivity. The invention also provides a spinning pack of the conductive fiber and a preparation method thereof.

In order to achieve the purpose, the conductive fiber comprises a fiber body, wherein a hollow part is arranged in the middle of the fiber body, and the hollow part of the fiber body is filled with a conductive material.

Preferably, the fiber body is solidified from a polymer melt.

Preferably, the conductive material is graphene or carbon black or metal.

The spinneret assembly for preparing the conductive fibers is provided with a spinneret orifice and a feed pipe, wherein the spinneret orifice comprises a guide hole and spinneret micropores connected with the bottom of the guide hole, the bottom of the feed pipe is provided with a discharge hole, the feed pipe penetrates through the guide hole, the discharge hole is arranged in the spinneret micropores, and the discharge hole is retracted into an outlet of the spinneret micropores.

The method for preparing the conductive fiber adopts the spinning assembly, the polymer melt is introduced into the spinning holes, the conductive material is made into aerosol or liquid, and then the conductive material is introduced into the feeding pipe.

According to the conductive fiber, the conductive material is filled in the fiber body, and the continuous conductive core formed by the conductive material is formed in the fiber, so that the conductive fiber has ultrahigh conductivity. And the equipment cost is lower, the occupied space is small and the control is easy.

Drawings

FIG. 1 is a schematic structural view of a conductive fiber of the present invention;

FIG. 2 is a schematic view of a spin pack.

Detailed Description

The following describes in detail a specific embodiment of the present invention with reference to the drawings.

As shown in fig. 1, the conductive fiber of the present invention includes a fiber body 10, wherein a hollow portion is disposed in the middle of the fiber body 10, and the hollow portion of the fiber body 10 is filled with a conductive material 11. The conductive material 11 may be graphene or carbon black, and may also be metal.

The fiber body 10 is formed by solidifying a polymer melt. The polymer melt can be terylene, chinlon and polypropylene.

As shown in fig. 2, the spinning pack for preparing the conductive fibers of the present invention has a spinning hole and a feeding tube 200, the spinning hole includes a guiding hole 301 and a spinning micropore 302 connected to the bottom of the guiding hole 301, the bottom of the feeding tube 200 is provided with a discharging hole 203, the feeding tube 200 penetrates through the guiding hole 301, the discharging hole 203 is disposed in the spinning micropore 302, the discharging hole 203 is retracted into the outlet of the spinning micropore 302 to provide an external pressure for the melt flowing through the outside of the discharging hole 203. The retraction of the discharge port 203 relative to the outlet of the spinneret micro-hole 302 is 0.1-0.5 mm. The top of the feeding pipe 200 is provided with a taper pin 201 which is matched with a taper hole in the material flow channel 101. The material flow channel 101 is arranged in the assembly and used for communicating a feeding port of the assembly with a feeding pipe 200, the material flow channel 101 and the melt flow channel 100 are arranged in different areas of the same distribution plate and used for forming a closed fluid passage and a material passage which are mutually separated, an aerosol or liquid conductive material can be introduced into the feeding port of the material flow channel, and the material flow channel 101 is pressed into the feeding port of the material flow channel by an air pump or a liquid pump, and the feeding amount of the conductive material can be controlled by the air pump or the liquid pump. The top of the taper pin 201 is provided with a feeding hole 202, and the conductive material passes through the material flow channel 101 under pressure and then enters the feeding pipe 200 through the feeding hole 202. The feeding tube 200 is fixed in the spinning pack by the cooperation of the taper pin 201 and the material flow channel 101.

According to the method for preparing the conductive fiber, the spinning assembly is adopted, polymer melt is continuously introduced into the spinning holes through the melt flow channel 100, conductive materials are made into aerosol or liquid, then the conductive materials are actively introduced into the material passage 101 through the air pump or the liquid pump, and finally the conductive materials are introduced into the material inlet pipe 200.

The raw material master batches are melted at high temperature to form polymer melt, and the polymer melt is solidified into a fiber body 10 after passing through a spinning assembly, wherein the fiber body 10 is formed by solidifying the polymer melt. The polymer melt enters the spinneret orifice from the periphery of the feeding pipe 200, the conductive material is made into aerosol or liquid and is introduced into the feeding pipe 200, the polymer melt flows out from the periphery of the feeding pipe 200 at the outlet of the spinneret micropore 302, the conductive material is sprayed out from the discharge port 202 of the feeding pipe 200 and is filled in the middle of the polymer melt, and the conductive material is continuously filled into the polymer melt to form a continuous conductive core.

As described above, exemplary embodiments of the present invention are described in detail with reference to the accompanying drawings. It should be understood that the invention is not intended to be limited to these specific details. Equivalent or similar changes in the structure and features of the exemplary embodiments may be made without departing from the spirit and scope of the invention, which shall also fall within the scope of the protection defined by the claims appended hereto.

Claims

1. The conductive fiber is characterized by comprising a fiber body, wherein a hollow part is arranged in the middle of the fiber body, and the hollow part of the fiber body is filled with a conductive material.

2. The conductive fiber of claim 1, wherein the fiber body is solidified from a polymer melt.

3. The conductive fiber of claim 1, wherein the conductive material is graphene or carbon black or a metal.

4. A spinneret assembly for preparing the conductive fiber according to claim 1, wherein said spinneret assembly has a spinneret hole and a feeding tube, said spinneret hole comprises a guiding hole and a spinneret micropore connected with the bottom of said guiding hole, said feeding tube has a discharging hole at the bottom, said feeding tube penetrates said guiding hole, said discharging hole is placed in said spinneret micropore, said discharging hole is retracted in the outlet of said spinneret micropore.

5. A process for preparing the electrically conductive fibers of claim 1, wherein the spinneret pack of claim 4 is used, the polymer melt is passed into the spinneret holes, the electrically conductive material is made into an aerosol or liquid form and then passed into the feed tube.