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A method for preparing carbon nanofibers by electrospinning

A carbon nanofiber and electrospinning technology, which is applied in the manufacture of conductive/antistatic filaments, fiber chemical characteristics, textiles and papermaking, etc., can solve the high cost of carbon nanofiber preparation, difficulty in mass production, and many uncontrollable factors etc. to achieve the effects of low price, reduced preparation cost and strong controllability

Inactive Publication Date: 2017-08-29
MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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Problems solved by technology

The preparation cost of carbon nanofiber is high, the process is complicated, and there are too many uncontrollable factors, so it is difficult to achieve mass production

Method used

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  • A method for preparing carbon nanofibers by electrospinning

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Embodiment

[0024] A method for preparing carbon nanofibers by electrospinning, comprising the following steps:

[0025] (1) Preparation of precursor solution: dissolve 1-3wt% acetic acid in 100ml ethanol solution to prepare an organic solvent; add a concentration of 2-5wt% polymer and a 2-10wt% lamellar structure to the organic solvent Graphite is subjected to ultrasonic treatment to obtain a homogeneously mixed precursor solution; in this embodiment, polyvinylpyrrolidone is selected as the polymer, and graphene is selected as the graphite with sheet structure; the ambient temperature for ultrasonic treatment is 60°C, the power is greater than 100W, and at least Carry out for 24 hours to ensure that graphene is evenly dispersed in polyvinylpyrrolidone;

[0026] (2) carry out electrospinning to polyvinylpyrrolidone / graphene mixed homogeneous precursor solution, prepare polymer / carbon nanocomposite fiber; In order to ensure that the diameter of carbon nanofiber is between 200nm-500nm, in t...

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Abstract

The invention discloses a novel method for preparing carbon nanofibers through electrospinning.The method comprises the steps that a polymer with the concentration of 2-5 wt%, laminated-structure graphite with the concentration of 2-10 wt% and an organic solution prepared by dissolving 1-3 wt% of acetic acid in 100 ml of an ethanol solution are subjected to ultrasonic treatment at 60 DEG C, and a precursor solution in which the polymer and graphite are evenly mixed is obtained; polymer and carbon nano composite fibers are prepared through an electrospinning technology; the polymer and carbon nano composite fibers are subjected to heat treatment at the temperature of 450 DEG C to remove the polymer in the polymer and carbon nano composite fibers, and the carbon nanofibers are obtained.According to the novel method for preparing the carbon nanofibers through electrospinning, the polymer and laminated-structure graphite are adopted to prepare precursor fibers, the polymer in the precursor fibers is directly removed through one step without high-temperature carbonization in a protection atmosphere, the carbon nanofibers are obtained, the preparation process is simple, and the cost is low.

Description

technical field [0001] The invention relates to the field of carbon nanofiber materials, in particular to a method for preparing carbon nanofibers by electrospinning. Background technique [0002] Carbon fiber (carbon fiber) has both the inherent properties of carbon materials and the softness and processability of textile fibers. It is a new generation of military and civilian dual-use materials and has been widely used in aerospace, transportation, medical, machinery, textiles and other fields. . Carbon nanofiber (carbon nanofiber) refers to carbon fiber with nanoscale, which has the advantages of high specific surface area, high strength, light weight, and high thermal conductivity. It is widely used in the preparation of electrode materials for high-capacity batteries, capacitors, and high-performance composite materials. . [0003] Electrospinning technology (electrospinning) is generally referred to as electrospinning in China. It is a kind of nano-scale fiber with a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F9/21D01F9/24D01F9/22D01F1/09
CPCD01F1/09D01F9/21D01F9/22D01F9/24
Inventor 杨丽军赵晓冲杨盼王劲川
Owner MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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