Method for preparing micron-order alumina fiber

A technology of alumina fiber and micron level, which is applied in the field of preparation of micron level alumina fiber, can solve the problems of many influencing factors, long production cycle, high price, etc., and achieve the effect of low preparation cost, short reaction time, and low-cost equipment
CN103553102AInactive Publication Date: 2014-02-05EAST CHINA NORMAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
EAST CHINA NORMAL UNIVERSITY
Publication Date
2014-02-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for preparing a micron-order alumina fiber. The method comprises the following steps: adding deionized water into diethylenetriamine pentaacetic acid, heating in a water bath at 80 DEG C to completely dissolve the diethylenetriamine pentaacetic acid; adding aluminum nitrate, continuously stirring for 2-6 hours after precipitated is generated; aging for 4 hours, decompressing and filtering the precipitate, drying for 6 hours at a constant temperature of 80 DEG C to obtain an alumina fiber precursor; putting the alumina fiber precursor into a quartz crucible; heating in an air atmosphere at a temperature of 600-1,200 DEG C, and maintaining for 2 hours to obtain the micron-order alumina fiber. The method is simple, low in reaction temperature, short in time, low in price of equipment; the prepared material is large in draw ratio and excellent in thermal stability, and has excellent commercial application prospect.
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Description

technical field

[0001] The invention relates to the technical field of synthesis of alumina fiber materials, in particular to a method for preparing micron-sized alumina fibers by means of an aqueous solution homogeneous precipitation method. Background technique

[0002] Fibrous materials of metal oxides have attracted great interest due to their high thermal stability, greater anisotropy, and good flexibility compared to bulk materials. As a material closely related to people's lives, metal oxide fibers are bound to greatly promote social development. At present, alumina fiber is the most widely studied and applied. Alumina fiber has many excellent properties, such as high strength, high temperature resistance, high melting point, etc., and also has strong corrosion resistance, good thermal shock resistance, good heat insulation performance, light weight, and small volume. The fields of high-temperature furnaces, aerospace, environmental protection and recycling, and rei...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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