Micronano zirconia fiber and preparation method thereof

Abstract

The invention relates to micronano zirconia fibers and a preparation method thereof. Use basic zirconium carbonate and glacial acetic acid to react, add yttrium salt crystal phase stabilizer, spinning aid and solvent, filter to remove insoluble impurities, and directly obtain zirconia precursor spinning sol with excellent spinnability in one step, and use centrifugal spinning Silk or electrospinning, combined with heat treatment technology to obtain zirconia fibers with diameters of 1-4μm and 100nm-1μm, can be used in the range of -269-2300°C. The method directly prepares continuous spinnable spinning sol by one-step method, and adopts two methods of centrifugal spinning and electrospinning to obtain micro-nano zirconia fibers, which is simple to operate, easy to realize, reduces preparation cost, and is more beneficial to the environment Protect.

Description

technical field [0001] The invention relates to a micronano zirconia fiber and a preparation method thereof, belonging to the technical field of inorganic non-metallic materials and applications. Background technique [0002] Zirconia has a very high melting point, very low thermal conductivity and excellent mechanical and mechanical properties, and its fiber products have more excellent temperature resistance, heat insulation and energy saving effects than other oxide fibers; the use temperature is high, up to 2200~2500℃, wide application range, suitable for various gases in high temperature furnaces, strong slag erosion resistance and other advantages, making it a very important special heat insulation material for ultra-high temperature industrial applications. The finer the fiber diameter, the greater the contact thermal resistance, the smaller the thermal conductivity, the better the heat insulation or heat insulation effect, and it can maintain good mechanical strength...

AI Technical Summary

Problems solved by technology

However, in the existing zirconia fiber preparation methods, there is a step of concentrating the mixed raw material solution in the preparation process of the zirconia precursor spinning sol in order to obtain a suitable precursor sol

This method not only has cumbersome operation steps, but further concentration is required to obtain a suitable sol after the raw materials are dissolved, and the concentration process requires large energy consumption, which is not conducive to energy saving.

[0004] At the same time, the current zirconia fiber preparation process still has problems such as relatively complicated process, many types of raw materials, and high cost of the obtained fiber and its products.

Images