A ZrC nanofiber and its preparation method

The electrospinning method is used to prepare ZrC nanofibers, which simplifies the process flow and solves the problems of complex preparation and easy oxidation of SiC fibers in the existing technology. It realizes the large-scale production of low-cost and efficient ZrC nanofibers and expands its application in the field of aerospace thermal protection.

CN118854493BActive Publication Date: 2025-09-23SHAANXI UNIV OF SCI & TECH
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Patent Information

Application Number
CN202411108360.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-08-13
Publication Date
2025-09-23
Estimated Expiration
2044-08-13

AI Technical Summary

Technical Problem

The existing preparation method of ZrC nanofibers is complex and difficult to achieve large-scale production, and SiC ultra-high temperature ceramic fibers are easily oxidized at high temperatures, which limits their application.

Method used

ZrC nanofibers are prepared by electrospinning using zirconium source and polyacrylonitrile or polyvinyl pyrrolidone as raw materials, including preparing metal salt solution, stirring and mixing, electrospinning and high-temperature treatment. The process is optimized and simplified to obtain preliminary spinning methods, including electrospinning, pre-oxidation and high-temperature carbonization, to simplify the process flow.

Benefits of technology

A simplified preparation method for ZrC nanofibers has been achieved, which simplifies the process flow, reduces costs, and improves production efficiency. The prepared ZrC nanofibers have excellent ultra-high temperature performance and are suitable for the field of aerospace thermal protection.

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Abstract

The present invention provides a ZrC nanofiber and a preparation method thereof. The preparation method of the ZrC nanofiber comprises the following steps: 1) dissolving a zirconium source in a solvent to prepare a metal salt solution; 2) adding a carbon source to the metal salt solution and stirring to obtain a spinning precursor solution; the carbon source is polyacrylonitrile or polyvinyl pyrrolidone; 3) electrospinning the spinning precursor solution according to a predetermined spinning process to obtain as-spun fibers; and 4) pre-oxidizing the as-spun fibers and then performing high-temperature carbonization to obtain the ZrC nanofiber. The preparation method has a simple operation process, low process cost, and is easy to implement for large-scale production.
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