High-temperature-resistant biologically-soluble ceramic fiber and preparation method thereof

Abstract

The invention relates to a high-temperature biologically-soluble ceramic fiber and a preparation method thereof. According to a technical scheme, the method comprises the following steps of: uniformly mixing 10-30 percent by weight of wollastonite powder or 15-40 percent by weight of dolomite powder, 10-30 percent by weight of talc powder or 8-30 percent by weight of forsterite powder, 40-70 percent by weight of quartz sand powder and 5-20 percent by weight of industrial sodium carbonate serving as raw materials; putting a mixture into a furnace, heating to 1,450-1,700 DEG C, melting, forming a fiber by blowing with compressed air of 0.2-0.5 MPa or forming a fiber by directly performing thread throwing to obtain calcium-magnesium-silicon ceramic cellucotton, putting into nitric acid or hydrochloric acid of which the concentration is 0.5-3 mol / L, heating to 70-90 DEG C, preserving heat for 3-5 hours, and washing with water till the pH value of water washing waste water is 6-7; and thermally treating under a nitrogen atmosphere at the temperature of 800-1,050 DEG C for 2-6 hours to obtain the high-temperature biologically-soluble ceramic fiber. The high-temperature biologically-soluble ceramic fiber has the characteristics of low melting temperature, easiness for operating a fiber forming process, low production cost and the like; and a product has high using temperature and high biological degradation rate.

Description

technical field [0001] The invention belongs to the technical field of ceramic fibers. In particular, it relates to a high-temperature resistant biosoluble ceramic fiber and a preparation method thereof. Background technique [0002] The main chemical composition of traditional aluminum silicate ceramic fiber is mainly silica and alumina. The fine dust particles produced during the production, use, transportation and disassembly of this fiber are absorbed by the human body and enter the respiratory system. It is difficult to be degraded by human body fluids, and the deposition of its particles in the human body will induce inflammation of the respiratory system and even cancer. Therefore, the International Association for Research on Cancer classifies aluminum silicate ceramic fibers as possible carcinogens according to their hazards to human health. Correspondingly, the substitute of aluminum silicate ceramic fiber - biosoluble ceramic fiber has received great attention f...

AI Technical Summary

Problems solved by technology

For example, the melting temperature of the raw materials is high, the operation of the fiber forming process is difficult, and the performance of the fiber needs to be improved, etc.