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A preparation method of hollow carbon fiber with controllable size

A carbon fiber and hollow technology, applied in hollow filament manufacturing, fiber chemical characteristics, rayon manufacturing, etc., can solve problems such as difficult mass production, poor operational stability, harsh conditions, etc., to improve operability and controllability The effects of high stability, reduced preparation cost, and mild experimental conditions

Active Publication Date: 2017-10-27
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the spinning conditions for preparing hollow carbon fibers by coaxial spinning are harsh, requiring strict control of the flow rate of the inner and outer layers, and poor operational stability; in addition, it is also prone to mutual solubility of solutions, making it difficult to achieve large-scale production

Method used

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  • A preparation method of hollow carbon fiber with controllable size
  • A preparation method of hollow carbon fiber with controllable size
  • A preparation method of hollow carbon fiber with controllable size

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] a. Weigh 0.45g MnSO 4 ·H 2 O and 1g KMnO 4 Dissolve them in 30mL deionized water and stir magnetically until the solid is completely dissolved. MnSO4·H 2 Pour O solution into KMnO 4 In the solution, continue to stir until the mixture gradually becomes a brownish yellow suspension. Subsequently, the brown-yellow suspension was transferred to a 100 mL stainless steel hydrothermal reactor and reacted at a constant temperature of 160° C. for 12 h. After the reaction, the precipitate in the kettle was filtered under reduced pressure, washed with distilled water and absolute ethanol 3 times, and dried to obtain MnO 2 Metal oxide nanorods.

[0032] b. Weigh 1.5g of PAN, dissolve it in 15g of DMF, and stir magnetically until it is completely dissolved. Then put 0.5g MnO 2 The metal oxide nanorods are continuously stirred and mixed evenly to obtain a spinning solution.

[0033] c. The environmental temperature of electrospinning is ≤40℃, and the environmental humidity is ≤30%. The...

Embodiment 2

[0037] a. Weigh 0.45g MnSO 4 ·H 2 O and 1g KMnO 4 Dissolve them in 30mL deionized water and stir magnetically until the solid is completely dissolved. MnSO4·H 2 Pour O solution into KMnO 4 In the solution, continue to stir until the mixture gradually turns into a brownish yellow suspension. Subsequently, the brown-yellow suspension was transferred to a 100 mL stainless steel hydrothermal reactor, and reacted at 160° C. for 18 hours at a constant temperature. After the reaction, the precipitate in the kettle was filtered under reduced pressure, washed with distilled water and absolute ethanol 3 times, and dried to obtain MnO 2 Metal oxide nanorods.

[0038] b. Weigh 1.5g of PAN, dissolve it in 15g of DMF, and stir magnetically until it is completely dissolved. Then put 0.5g MnO 2 The metal oxide nanorods are continuously stirred and mixed evenly to obtain a spinning solution.

[0039] c. The environmental temperature of electrospinning is ≤40℃, and the environmental humidity is ≤3...

Embodiment 3

[0043] a. Weigh 0.45g MnSO 4 ·H 2 O and 1g KMnO 4 Dissolve them in 30mL deionized water and stir magnetically until the solid is completely dissolved. MnSO4·H 2 Pour O solution into KMnO 4 In the solution, continue to stir until the mixture gradually turns into a brownish yellow suspension. Subsequently, the brown-yellow suspension was transferred to a 100 mL stainless steel hydrothermal reactor, and reacted at a constant temperature at 160° C. for 24 h. After the reaction, the precipitate in the kettle was filtered under reduced pressure, washed with distilled water and absolute ethanol 3 times, and dried to obtain MnO 2 Metal oxide nanorods.

[0044] b. Weigh 1.5 g of PAN, dissolve it in 15 g of DMF, and stir magnetically until it is completely dissolved. Then put 0.5g MnO 2 The metal oxide nanorods are continuously stirred and mixed uniformly to obtain a spinning solution.

[0045] c. The environmental temperature of electrospinning is ≤40℃, and the environmental humidity is ≤...

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Abstract

The invention discloses a method for preparing hollow carbon fibers with controllable dimensions, and relates to the technical field of carbon fiber preparation. First prepare metal oxide nanorods by hydrothermal method, then mix metal oxide nanorods and polymers in an organic solvent, stir evenly; obtain metal oxide (MOX) / polymer (MP) by electrospinning Blended raw silk; then the blended raw silk is pre-oxidized, carbonized and other heat treatment technologies to obtain MOX / CNF composite carbon fibers, and then pickled, filtered, and dried to obtain hollow carbon fibers. The metal oxide hard template prepared by the hydrothermal method has good scale controllability, and can prepare carbon fibers with hollow structures of different scales. The use of technology can effectively regulate the size of fibers, and can achieve the purpose of mass production.

Description

Technical field [0001] The invention relates to the technical field of carbon fiber preparation. technical background [0002] Ordinary carbon fiber has attracted wide attention due to its high specific surface area, good thermal stability, corrosion resistance, and excellent electrical and thermal conductivity. Compared with ordinary carbon fiber, hollow carbon fiber has the advantages of ordinary carbon fiber. Due to the hollow structure, an extra inner surface is added, which greatly improves the performance of adsorption, mass transfer, catalysis, etc. It has good application prospects in the fields of hydrogen storage industry, environmental protection and water purification. [0003] The traditional hollow carbon fiber preparation technology mainly includes molecular self-assembly method and chemical vapor deposition method. The hollow carbon fiber prepared by molecular self-assembly method has a small diameter, generally no more than 10nm; while the technology of preparing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F9/22D01F9/21D01F1/08D01F1/10B82Y40/00
CPCB82Y40/00D01F1/08D01F1/10D01F9/21D01F9/225
Inventor 贾哲华徐继任赵有华贾成浩董斌陶翠
Owner YANGZHOU UNIV
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