Method for preparing polyvinyl acetate zirconyl precursor sol spinning solution and sub-micron zirconium oxide crystal fibers

A technology of sol spinning solution and precursor fiber, which is applied in fiber processing, textiles and papermaking, filament/thread forming, etc., can solve the problems of low solid content of precursor spinning solution, insufficient diameter of zirconia crystal fiber, and It is difficult to guarantee the spinnability and fiber crystal quality at the same time, so as to achieve the effect of improving ultra-high temperature thermal insulation and mechanical properties, excellent ultra-high temperature thermal insulation and mechanical properties, and excellent thermal insulation and mechanical properties
CN106929947AInactive Publication Date: 2017-07-07山东德艾普节能材料有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
山东德艾普节能材料有限公司
Publication Date
2017-07-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for preparing polyvinyl acetate zirconyl precursor sol spinning solution and sub-micron zirconium oxide crystal fibers. The method mainly includes dissolving basic zirconium carbonate, glacial acetic acid, yttrium nitrate hexahydrate and spinning auxiliaries in absolute methanol according to certain proportions to obtain mixed solution and concentrating the mixed solution under reduced pressures at the temperatures of 30-40 DEG C to obtain the colorless, transparent and homogenous polyvinyl acetate zirconyl precursor sol spinning solution; acquiring polyvinyl acetate zirconyl precursor fibers by the aid of electrostatic spinning processes; carrying out pressure resolution on the precursor fibers to remove a ligand which is acetic acid, and then carrying out high-temperature treatment on the precursor fibers in a program-control sintering furnace. The method has the advantages that the diameters of the sub-micron zirconium oxide crystal fibers obtained byte ha id of the method range from 100 nanometers to 2.5 micrometers, and the sub-micron zirconium oxide crystal fibers are excellent in continuity, flexibility and heat-insulation and mechanical properties; the polyvinyl acetate zirconyl precursor sol spinning solution and the sub-micron zirconium oxide crystal fibers can be used at ultrahigh temperatures higher than or equal to 1800 DEG C for a long term.
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Description

technical field

[0001] The invention relates to a preparation method of poly-zirconyl acetate precursor sol spinning solution and submicron zirconia crystal fiber, and belongs to the field of inorganic non-metallic materials. Background technique

[0002] Compared with other oxide fibers that have been widely used, zirconia fibers have a very high melting point (2715°C), the lowest thermal conductivity, high chemical stability, excellent oxidation resistance and extreme acid and alkali corrosion resistance. sex. Zirconia fiber is currently the only crystal fiber material that can meet the ultra-high temperature oxidation atmosphere above 1800 °C. Therefore, the development of zirconia crystal materials for long-term use in ultra-high temperature environments is an urgent need in the fields of aviation, aerospace and ultra-high temperature furnaces.

[0003] The applicant started the research on zirconia fiber in 1998, and has obtained a series of patents on zirconia crysta...

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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