CN111850736A - Conductive fiber, spinneret assembly and preparation method thereof - Google Patents

Abstract

The invention discloses a conductive fiber, a spinneret assembly and a preparation method. The conductive fiber comprises a fiber body, a hollow part is arranged in the middle of the fiber body, and the hollow part of the fiber body is filled with conductive materials. The conductive fiber of the present invention has a continuous conductive core formed of pure conductive material, has ultra-high conductivity, and has low equipment cost, small occupied space and easy control.

Description

Conductive fiber, spinneret assembly and preparation method thereof

technical field

The invention relates to a fiber, in particular to a conductive fiber, a spinneret assembly and a preparation method.

Background technique

With the improvement of the quality of life, people have higher and higher requirements for the performance of functional fibers, such as conductive fibers. Conductive fibers have far superior performance in eliminating and preventing static electricity than antistatic fibers.

Existing carbon black fiber is a conductive fiber made by mixing carbon black and fiber-forming material by skin-core spinning method, but it lacks toughness, is not resistant to bending, and has no heat shrinkage ability, and the outer layer of carbon black is coated. It is easy to fall off, reducing the electrical conductivity, and the spinning process is not easy to control; the existing conductive metal compound fibers are spun by the method of blending metal materials and polymer melts, and the conductive metal medium is mixed into the polymer melt. High cost, and its spinning process is not easy to control; the existing conductive polymer fibers, organic conductive fibers directly spun from polymer conductive materials such as polyacetylene, polyaniline, polypyrrole, polythiophene, etc., require special equipment and components, making spinning difficult and costs rising.

SUMMARY OF THE INVENTION

In order to solve the above problems, the present invention provides a conductive fiber, which can reduce the consumption of conductive materials and ensure the conductive performance. The present invention also provides a spinneret assembly of conductive fibers and a preparation method thereof.

In order to achieve the above object, the conductive fiber of the present invention includes a fiber body, a hollow portion is provided in the middle of the fiber body, and the hollow portion of the fiber body is filled with 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 of the present invention for preparing the conductive fiber has a spinneret hole and a feeding pipe, the spinneret hole includes a guide hole and a spinneret micro-hole connected to the bottom of the guide hole, so The bottom of the feed pipe is provided with a discharge port, the feed pipe runs through the guide hole, the discharge port is placed in the spinneret micro-hole, and the discharge port is indented in the spinneret Micropore outlet.

In the method for preparing the conductive fiber of the present invention, the spinneret assembly is used, the polymer melt is passed into the spinneret hole, the conductive material is made into aerosol or liquid state, and then passed into the feed material inside the tube.

In the conductive fiber of the present invention, the conductive material is filled in the fiber body, and a continuous conductive core composed of the conductive material is formed in the fiber, which has ultra-high conductivity. And its equipment cost is low, the space is small, and it is easy to control.

Description of drawings

Fig. 1 is the structural representation of the conductive fiber of the present invention;

Figure 2 is a schematic diagram of a spinneret assembly.

Detailed ways

Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

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

The fiber body 10 is solidified from a polymer melt. The polymer melt can be polyester, nylon, polypropylene.

As shown in FIG. 2 , the spinneret assembly for preparing the conductive fiber of the present invention has a spinneret hole and a feeding pipe 200 , and the spinneret hole includes a guide hole 301 and a connection with the guide hole 301 The spinneret micro-holes 302 connected at the bottom, the feed pipe 200 is provided with a discharge port 203 at the bottom, the feed pipe 200 penetrates the guide hole 301, and the discharge port 203 is placed in the spinneret micro-hole 301. In the hole 302 , the discharge port 203 is retracted at the outlet of the spinneret micro-hole 302 to provide external pressure for the melt flowing through the outside of the discharge port 203 . The indentation 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 tapered pin 201 , which is matched with the tapered hole in the material flow channel 101 . The material flow channel 101 is set in the component and is used to connect the component inlet and the feeding pipe 200. The material flow channel 101 and the melt flow channel 100 are opened in different areas of the same distribution plate to form a closed And the fluid passage and the material passage which are isolated from each other, can pass aerosol or liquid conductive material at the feed port, and press it into the material flow passage 101 through an air pump or a liquid pump, which can be controlled by the air pump or the liquid pump. The feeding amount of conductive material. The top of the taper pin 201 is provided with a feeding port 202 , and the conductive material passes through the material flow channel 101 under pressure and then enters the feeding pipe 200 through the feeding port 202 . The feed pipe 200 is fixed in the spinneret assembly through the cooperation of the tapered pin 201 and the material flow channel 101 .

In the method for preparing the conductive fiber of the present invention, the spinneret assembly is used to continuously pass the polymer melt into the spinneret hole through the melt flow channel 100, and the conductive material is made into an aerosol or liquid state, Then, it is actively passed into the material passage 101 through an air pump or a liquid pump, and finally passed into the feeding pipe 200 .

The raw material masterbatch is melted at high temperature to form a polymer melt, and after passing through a spinneret assembly, it is solidified into a fiber body 10, and the fiber body 10 is solidified from the same polymer melt. The polymer melt enters the spinneret hole from the periphery of the feed pipe 200 , the conductive material is made into aerosol or liquid and is introduced into the feed pipe 200 , and the polymer melt flows from the outlet of the spinneret microhole 302 . The surrounding of the feeding pipe 200 flows out, and the conductive material is sprayed from the discharge port 202 of the feeding pipe 200 and filled into 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, the exemplary embodiments of the present invention have been described in detail with reference to the accompanying drawings. It should be understood that these specific details are not intended to limit the scope of the invention. Equivalent or similar changes may be made in the structures and features of the exemplary embodiments without departing from the spirit and scope of the invention, and such changes will also fall within the protection defined by the appended claims. within the range.

Claims (5)

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.

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