Preparation method of zirconium oxide refractory fibers

Abstract

The invention belongs to the technical field of refractory fibers, and particularly relates to a preparation method of zirconium oxide refractory fibers. The preparation method comprises the followingsteps that zirconium oxychloride is dissolved in an alcoholic solution of acetate, a stirring reaction is carried out 4.5 - 6.5 h at the temperature of 30 - 35 DEG C, filtering is carried out, an yttrium stabilizer and a refractory additive are added to an obtained filtrate, and stirring is continuously carried out 3 - 4 h to form a sol; polytetrafluoroethylene dispersion emulsion, molybdenum containing phenolic resin, acrylic resin emulsion and polyethylene glycol are mixed to prepare an organic mixed solution; the sol is added into the organic mixed solution, polyacrylamide is added, and uniform mixing is carried out to obtain an electrostatic spinning solution; the electrostatic spinning solution is put into an electrostatic spinning device for electrostatic spinning to obtain protofilaments, and the protofilaments are sintered at high temperature to prepare the zirconium oxide refractory fibers. The zirconium oxide refractory fibers prepared by the preparation method have excellent chemical stability and thermal stability, high melting point and good toughness.

Description

technical field [0001] The invention belongs to the technical field of refractory fibers, and in particular relates to a preparation method of zirconia refractory fibers. Background technique [0002] Refractory fiber has the advantages of light weight, good heat insulation, small heat capacity, high temperature resistance, thermal shock resistance, etc., and it is also easy to process and form various products such as blankets, felts, boards, cloth, paper, special-shaped parts, etc., and the construction is convenient. It has been widely used in many fields such as steel, electric power, petroleum, building materials, chemical industry, electronics, aerospace and scientific research, and the output of refractory fibers in the world is increasing year by year. [0003] Refractory fibers are divided into two categories: amorphous and polycrystalline. Amorphous refractory fiber, including aluminum silicate, high-purity aluminum silicate, chromium-containing aluminum silicate ...

AI Technical Summary

Problems solved by technology

[0005] The preparation methods of zirconia fibers mainly include the following four types: impregnation method, mixing method, sol-gel method and organic polyzirconium method, but the above four types of methods are all There are defects, such as the low fiber strength of the fiber obtained by the impregnation method, the spinning solution of the mixing method is unstable, the raw materials of the sol-gel method are expensive, the organic pollution of the organic polyzirconium method is relatively large, and the common process steps of each method Complicated and difficult to achieve industrial production, resulting in poor quality of prepared zirconia fibers