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Method for preparing magnesium oxide composite fiber

A technology of composite fiber and magnesium oxide, which is applied in the fields of fiber chemical characteristics, textiles and papermaking, can solve the problems of large fiber diameter, unevenness, poor continuity, etc., and achieve smooth surface, reduced fiber diameter, and long aspect ratio Effect

Inactive Publication Date: 2014-03-12
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost of the first two methods is low, but the diameter of the produced fiber is large and uneven, and the continuity is poor

Method used

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  • Method for preparing magnesium oxide composite fiber
  • Method for preparing magnesium oxide composite fiber
  • Method for preparing magnesium oxide composite fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] a. Preparation of spinnable gel

[0023] Dissolve 1.0 g of polyvinylpyrrolidone in 50 mL of deionized water, stir to dissolve, add 2.0 g of magnesium chloride, and stir for 8 hours to obtain a transparent and stable solution. The solution is concentrated by rotary evaporation to obtain a transparent spinnable gel.

[0024] b. Fiber preparation

[0025] After the above gel was left for 3 days, the filaments were picked with a glass rod to obtain composite gel filaments, dried in an oven at 100°C for 24 hours, and then calcined at 450°C to obtain magnesium oxide composite fibers.

Embodiment 2

[0027] a. Preparation of spinnable gel

[0028] Dissolve 1.0 g of polyvinylpyrrolidone in 80 mL of ethanol aqueous solution, stir to dissolve, add 2.0 g of magnesium chloride, and stir for 12 hours to obtain a transparent and stable solution. The solution is concentrated by rotary evaporation to obtain a transparent spinnable gel.

[0029] b. Fiber preparation

[0030] After the above gel was left for 4 days, the filaments were picked with a glass rod to obtain composite gel filaments, dried in an oven at 100°C for 12 hours, and then calcined at 450°C to obtain magnesium oxide composite fibers.

Embodiment 3

[0032] a. Preparation of spinnable gel

[0033] Dissolve 2.0 g of polyvinylpyrrolidone in 100 mL of acetone aqueous solution, stir to dissolve, add 2.0 g of magnesium chloride, and stir for 10 hours to obtain a transparent and stable solution. The solution is concentrated by rotary evaporation to obtain a transparent spinnable gel.

[0034] b. Fiber preparation

[0035] After the above gel was left for 6 days, the filaments were picked with a glass rod to obtain composite gel filaments, dried in an oven at 100°C for 8 hours, and then calcined at 600°C to obtain magnesium oxide composite fibers.

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Abstract

The invention discloses a method for preparing a magnesium oxide composite fiber. The method is implemented by using a characteristic that a high-molecular polymer is easily formed into filaments and comprises the following steps: loading magnesium chloride on the high-molecular polymer so as to form a gel, and carrying out filament picking and calcining on the gel so as to obtain the magnesium oxide composite fiber. The obtained fiber is smooth in surface, has no significant defect, and has a relatively long length diameter, so that the fiber has good application prospect and good commercial value in the aspect of refractory and insulating materials.

Description

technical field [0001] The invention relates to the technical field of fiber preparation. Specifically, magnesium chloride is loaded on the high molecular polymer to make a gel by virtue of the characteristic that it is easy to form filaments, and the magnesium oxide fiber is obtained after spinning and calcining. Background technique [0002] With the continuous development and progress of science and technology, energy, energy conservation and environmental protection issues have attracted a lot of attention, and the fields of aerospace, military and civilian vehicles have also put forward higher and higher requirements for high-temperature insulation materials. Magnesium hydroxide and magnesium oxide, as a class of alkaline substances with strong buffering properties and high-efficiency chemical properties, are particularly prominent and important in the field of high-temperature-resistant and heat-insulating materials. There are a wide range of applications. [0003] Ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/10
Inventor 单永奎严莉丽朱小方邢芳占瑛刘玉飞
Owner EAST CHINA NORMAL UNIV
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