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High-entropy zirconate inorganic fiber and preparation method thereof

A technology of inorganic fiber and zirconate, which is applied in the fields of fiber chemical characteristics, textiles and papermaking, can solve the problems of lack of preparation experience and no high-entropy oxide fiber, etc., and achieve the effect of simple process, stable and reliable sol, and low cost

Active Publication Date: 2021-07-09
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, although people have done a lot of research on high-entropy ceramics, there are no reports on the preparation of high-entropy oxide fibers, and there is a lack of relevant preparation experience. This has also become a problem to be solved when applying high-entropy structures to oxide inorganic fibers The problem

Method used

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  • High-entropy zirconate inorganic fiber and preparation method thereof
  • High-entropy zirconate inorganic fiber and preparation method thereof
  • High-entropy zirconate inorganic fiber and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] A method for preparing high-entropy zirconate inorganic fibers, comprising the steps of:

[0032] (a) Preparation of high-entropy zirconate fiber precursor sol

[0033] The solid raw material basic zirconium carbonate, calcium acetate, strontium acetate, and barium acetate are added to the water with a mass ratio of solid:water=1:1 according to the element molar ratio Zr:Ca:Sr:Ba=3:1:1:1, and Under the condition of heating and stirring at 60°C, add the molar ratio Zr:CH 3 COOH = 1: 2 glacial acetic acid, dissolved to obtain a high-entropy zirconate sol; adding polyethylene oxide with a mass fraction of 1% to the high-entropy zirconate sol, fully dissolved to obtain a high-entropy zirconate fiber precursor Sol;

[0034] (b) Preparation of high-entropy zirconate precursor fibers by electrospinning

[0035] The high-entropy zirconate fiber precursor sol in step (a) is obtained by electrospinning the high-entropy zirconate precursor fiber, wherein the electrospinning pro...

Embodiment 2

[0039] As described in Example 1, the difference is that the calcium acetate in step (a) is replaced by calcium hydroxide, adding the molar ratio Zr:CH 3 COOH = 1:3 glacial acetic acid.

Embodiment 3

[0041] As described in Example 1, the difference is that calcium acetate is replaced by calcium oxide in step (a), and the molar ratio Zr:CH is added. 3 COOH = 1:3 glacial acetic acid.

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Abstract

The invention relates to a high-entropy zirconate inorganic fiber and a preparation method thereof. The preparation method comprises the following steps that basic zirconium carbonate, a calcium source, a strontium source, a barium source, glacial acetic acid and a spinning aid are heated and dissolved in a certain proportion in an aqueous solution to prepare high-entropy zirconate precursor sol; electrostatic spinning is carried out on the high-entropy zirconate precursor sol to obtain high-entropy zirconate precursor fibers; and heat treatment is carried out on the high-entropy zirconate precursor fiber to obtain the high-entropy zirconate inorganic fiber. The obtained sol is stable and good in spinnability, the obtained high-entropy zirconate fiber is a single-phase solid solution, the diameter of the fiber is 0.5-1.5 [mu]m, and the crystal phase and the fiber form are kept stable under the condition of the high temperature ranging from the room temperature to 1400 DEG C.

Description

technical field [0001] The invention relates to a high-entropy zirconate inorganic fiber and a preparation method thereof, belonging to the field of inorganic non-metallic materials. Background technique [0002] Since Rost et al. first extended the high-entropy concept proposed by Ye Junwei and Cantor in alloys to ceramics in 2015, high-entropy ceramic materials are a new type of multi-host material formed by various ceramic components in equimolar ratios or near equimolar ratios. Elemental solid solution, with its lower thermal conductivity, slow diffusion effect and better performance, shows great application potential in the field of high temperature insulation. [0003] Oxide inorganic fibers have developed into one of the key materials in the field of high temperature insulation due to their excellent high temperature stability, oxidation resistance, corrosion resistance, and light weight. However, oxide fibers have a common problem under high-temperature service cond...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/10
CPCD01F9/10
Inventor 袁康康靳晓彤崔晴李呈顺
Owner QILU UNIV OF TECH
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