Core-shell structure fiber based on carbon nano material and preparation method thereof

A technology of carbon nanomaterials and core-shell structure, applied in fiber processing, fiber chemical characteristics, spinning solution preparation, etc., can solve the problems of low elongation rate of carbon nanomaterial composite fibers, difficulty in preparing composite fibers, and poor mechanical properties and other problems, to achieve the effect of excellent tensile properties, broad application prospects, and flexible tensile properties

Inactive Publication Date: 2017-09-19
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The carbon nanomaterial composite fibers obtained by these preparation methods have high electrical conductivity, but these carbon nanomaterial composite fibe

Method used

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  • Core-shell structure fiber based on carbon nano material and preparation method thereof
  • Core-shell structure fiber based on carbon nano material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Step 1: Mix 50 mg of graphene with 10 mL of acetone, stir mechanically for 10 min, and ultrasonically disperse at 30° C. at 50 KHz for 30 min to obtain a 5 mg / mL graphene dispersion;

[0027] Step 2: Mix the dispersion obtained in Step 1 with 10g of silicone rubber main agent, mechanically stir for 10 minutes, then disperse ultrasonically at 30°C for 1.5h, then heat it to 70°C (above the boiling point of acetone) until the acetone is completely removed, and then cool to room temperature , then add 1g of silicone rubber curing agent to it, then fully stir for 30min, and then perform degassing treatment under a vacuum of about 0.01Pa for 10min to obtain the core layer spinning stock solution;

[0028] Step 3, mix 10g of silicone rubber main agent with 1g of curing agent, fully stir for about 30 minutes, and degas for 10 minutes to obtain the shell spinning stock solution;

[0029] Step 4: Use two syringe pumps to inject the core layer spinning solution and the shell layer...

Embodiment 2

[0031] Step 1: Mix 30 mg of graphene oxide with 10 mL of acetone, stir mechanically for 10 min, and ultrasonically disperse at 30° C. at 50 KHz for 30 min to obtain a 3 mg / mL graphene oxide dispersion, which is brown in color;

[0032] Step 2: Mix the dispersion liquid obtained in Step 1 with 10g of silicone rubber main agent, stir mechanically for 10 minutes, then disperse ultrasonically at 30°C for 1.5h, then heat it at 70°C (above the boiling point of acetone) to completely remove acetone, then cool to room temperature, Then add 1g of silicone rubber curing agent to it, then fully stir for 30 minutes, and then perform degassing treatment under a vacuum of about 0.01Pa for 10 minutes to obtain the core layer spinning stock solution;

[0033] Step 3, mix 10g of silicone rubber main agent with 1g of curing agent, fully stir for about 30 minutes, and degas for 10 minutes to obtain the shell spinning stock solution;

[0034] Step 4: Use two syringe pumps to inject the core layer...

Embodiment 3

[0037] Step 1, mixing carbon nanotubes with a mixture of ethanol and ethylene glycol, mechanically stirring for 30 minutes, and ultrasonically dispersing for 1 hour to obtain a suspension of carbon nanomaterials in an organic solvent with a concentration of 1 mg / mL;

[0038] Step 2: Mix carbon nanomaterial organic solvent suspension with two-component room temperature vulcanized liquid silicone rubber at a mass ratio of 0.3:100, stir mechanically for 10 minutes, disperse ultrasonically at 20°C for 3 hours, and then heat it to the boiling point of the organic solvent until the organic solvent is completely removed. Solvent, then cooled to room temperature, then added silicone rubber curing agent, then fully stirred for 20 minutes, and then degassed under a vacuum of about 0.001Pa to obtain the core layer spinning stock solution;

[0039] Step 3: Mix the two-component room temperature vulcanized liquid silicone rubber with the curing agent according to the required ratio, fully s...

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Abstract

The invention discloses a core-shell structure fiber based on a carbon nano material and a preparation method thereof. The preparation method comprises the following steps: firstly uniformly dispersing the carbon nano material into an organic solvent, then uniformly mixing with organic silicon rubber, and preparing a core layer spinning solution, wherein shell layer spinning solution is pure liquid silicone rubber; secondly, adopting two injection pumps for injecting the core layer spinning solution and the shell layer spinning solution into coagulation bath by virtue of a coaxial spinning needle, curing and forming, then cleaning the cured composite fiber in a washing pool, and collecting by adopting a collecting device; and finally, carrying out drying treatment or reduction treatment on the composite fiber, so that a continuous core-shell structure composite fiber is obtained. The preparation method is simple, the fiber forming quantity is large, the diameter of the fiber is controllable, and the prepared core-shell structure fiber has flexibility and excellent stretch property, overcomes the defects of an existing carbon nano material composite fiber that the stretch rate is low and the mechanical strength is low, can be applied to the fields of sensors, flexible conductors and wearable electronic equipment, and has broad application prospects.

Description

technical field [0001] The invention belongs to the field of intelligent materials and polymer-based nanocomposite materials, and in particular relates to a core-shell structure fiber based on carbon nanomaterials and a preparation method thereof. Background technique [0002] In recent years, carbon nanomaterials such as carbon nanotubes, graphene and their derivatives have been widely studied because of their unique structures and excellent mechanical, electrical and thermal properties. A variety of carbon nanomaterial composite fibers have been developed, mainly including carbon nanotube fibers, graphene fibers, etc. Carbon nanotube fibers are mainly synthesized by chemical vapor deposition into spinnable carbon nanotube arrays, and then spun from carbon nanotube arrays to obtain carbon nanotube fibers (Science 2004, 306, 1358); graphene fibers are mainly composed of liquid crystal phase wetted Spinning method (Nat.Commun.2011,2,571), confined hydrothermal assembly metho...

Claims

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Application Information

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IPC IPC(8): D01D1/02D01D5/06D01D5/34D01D10/06D01F8/16D01F1/10
CPCD01D1/02D01D5/06D01D5/34D01D10/06D01F1/10D01F8/16
Inventor 贾书海唐振华王飞
Owner XI AN JIAOTONG UNIV
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