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Method for preparing magnesium oxide fibers by ligand analysis technology

A magnesium oxide fiber and ligand analysis technology, which is applied in the fields of fiber chemical characteristics, rayon chemical post-treatment, inorganic raw material rayon, etc., can solve the problems of low strength and easy pulverization of magnesium oxide fiber, and solve the problem of easy powder The effect of reducing the generation of gaseous pollutants, improving the order and strength

Active Publication Date: 2015-03-11
SHANDONG UNIV
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

The invention can not only solve the problems of easy pulverization and low strength of magnesia fiber, but also the resolved ligand acid can be recovered and refined for reuse, thereby effectively reducing the emission of gaseous pollutants

Method used

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  • Method for preparing magnesium oxide fibers by ligand analysis technology
  • Method for preparing magnesium oxide fibers by ligand analysis technology
  • Method for preparing magnesium oxide fibers by ligand analysis technology

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Embodiment Construction

[0007] Technical scheme of the present invention is as follows:

[0008] A method for preparing magnesia fiber by ligand analysis technique, the steps are as follows:

[0009] Put the fully dried magnesia precursor fibers in an atmosphere of alkaline gas, alkaline steam or / and water vapor, and perform ligand analysis treatment at a temperature above 100°C, and the magnesia precursor fibers undergo dissociation reactions to generate hydrogen Magnesium oxide; Magnesium hydroxide shrinks to form magnesium oxide fibers.

[0010] According to the present invention, preferably, adopt the method for preparing magnesia fiber by ligand analysis technique, the steps are as follows:

[0011] The magnesium oxide precursor fiber is fully dried, and then placed in an alkaline gas, alkaline steam or / and water vapor atmosphere for ligand analysis. The initial temperature is 105-270°C, the end temperature is 350-1000°C, and the heating time is 2~72h; then stop the atmosphere, continue to hea...

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Abstract

The invention relates to a method for preparing magnesium oxide fibers by a ligand analysis technology. The method comprises the following steps: putting fully dried magnesium oxide precursor fibers into an alkaline gas, alkaline steam or / and water vapor atmosphere, performing ligand analysis treatment under a condition that the temperature is higher than 100 DEG C, and performing dissociation reaction on the magnesium oxide precursor fibers to generate magnesium hydrate; enabling magnesium hydrate to be shrunk to form the magnesium oxide fibers. By the ligand analysis technology, the technical difficulties that the fibers are easy to pulverize and difficultly formed are solved; by an optimized thermal treatment program, the mechanical property of the magnesium oxide fibers can be effectively enhanced.

Description

technical field [0001] The invention relates to a method for preparing magnesium oxide fibers by adopting a ligand analysis technology, and belongs to the technical field of preparation and application of ultra-high temperature refractory materials. Background technique [0002] The development and application of special fibers is one of the important development directions of modern material science and technology. Ultra-high temperature oxide fiber is a high-strength refractory material that combines the high-temperature resistance of oxides and the spinnability of fibers. It has light weight, high temperature resistance, thermal shock resistance, good thermal stability, low thermal conductivity, small specific heat capacity, and Corrosion and other excellent properties have important application value in many fields such as aviation, aerospace, military and other cutting-edge technologies and industries. [0003] Magnesium oxide (melting point 2850°C) is a high-temperatu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/08D01F11/00C04B35/04
Inventor 许东林学军王新强刘雪松朱陆益张光辉刘本学蔡宁宁
Owner SHANDONG UNIV
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