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A kind of strontium zirconate inorganic fiber and its preparation method

A technology of inorganic fibers and strontium zirconate, which is applied in the direction of inorganic raw material rayon, etc., can solve the problems such as no strontium zirconate fibers, and achieve the effects of easy spinning and mass preparation, stable sol, and broad application prospects.

Active Publication Date: 2022-06-24
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far there is no report about strontium zirconate fiber

Method used

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  • A kind of strontium zirconate inorganic fiber and its preparation method
  • A kind of strontium zirconate inorganic fiber and its preparation method
  • A kind of strontium zirconate inorganic fiber and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A preparation method of strontium zirconate inorganic fiber, comprising the following steps:

[0034] (a) Preparation of strontium zirconate precursor sol

[0035] The raw material zirconium oxychloride and glacial acetic acid are added to the water of mass ratio solid: water=1:2 according to the molar ratio of zirconium oxychloride: glacial acetic acid=1:2, and dissolved to obtain a zirconia precursor sol; heated and stirred at 60 °C Under the conditions of , add strontium carbonate with a molar ratio of Zr : Sr = 1: 1 to the zirconia precursor sol, and dissolve it to obtain a strontium zirconate sol; add a mass fraction of 1.5% polyethylene oxide to the strontium zirconate sol, Fully dissolve to obtain strontium zirconate precursor sol;

[0036] (b) Preparation of strontium zirconate precursor fibers by electrospinning

[0037] The strontium zirconate precursor sol of step (a) is electrospinned to obtain strontium zirconate precursor fibers, wherein the electrospinn...

Embodiment 2

[0041] As described in Example 1, the difference is that the strontium carbonate in step (a) is replaced with strontium oxide.

Embodiment 3

[0043] As described in Example 1, the difference is that the strontium carbonate in step (a) is replaced with strontium hydroxide.

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Abstract

The invention relates to a strontium zirconate inorganic fiber and a preparation method thereof. The preparation method includes heating and dissolving the zirconium source, strontium source, organic ligand and spinning aid in an aqueous solution in a certain proportion to obtain a strontium zirconate precursor sol; the strontium zirconate precursor sol is obtained by electrospinning the zirconium Strontium zirconate precursor fiber; strontium zirconate inorganic fiber is prepared by heat-treating the strontium zirconate precursor fiber. The obtained sol is stable and reliable, has good spinnability, is easy to prepare by spinning, and has a high solid content of the precursor fiber. The diameter of the prepared strontium zirconate inorganic fiber is 0.5-1.0 μm, and the fiber shape is stable under high temperature conditions from room temperature to 1400 °C.

Description

technical field [0001] The invention relates to a strontium zirconate inorganic fiber and a preparation method thereof, belonging to the field of inorganic non-metallic materials. Background technique [0002] In recent years, with the demand for long-term operation of high-temperature kilns and the improvement of my country's emission standards for energy saving and environmental protection, the thermal insulation system represented by the thermal insulation layer of high-temperature energy-saving kilns has improved Thermal materials put forward higher requirements to solve the problems of high-temperature crystallization, phase transition, and insufficient temperature resistance of traditional inorganic fibers. Therefore, the development of inorganic fibers with excellent thermal insulation properties such as high melting point and low thermal conductivity has become one of the needs of advanced thermal insulation system research. [0003] Strontium zirconate (SrZrO 3 ) i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/48C04B35/622D01F9/08
CPCC04B35/48C04B35/6225D01F9/08C04B2235/3213
Inventor 袁康康窦同瑞李洁靳晓彤李呈顺
Owner QILU UNIV OF TECH