Method for preparing jadeite microcrystalline glass

Abstract

The invention discloses a method for preparing jadeite microcrystalline glass, and belongs to the technical field of material synthesis. According to the technical scheme, the main points are that aluminum silicate fiber, silicic acid and sodium carbonate are used as raw materials, proportioning is conducted according to the theoretical mass fraction ratio of all elements in the molecular formulaof jadeite NaAlSi2O6, preliminary treatment is conducted on proportioning, and then sintering is conducted twice at the high temperature and the normal pressure to obtain the target product. The aluminum silicate fibers are used as raw materials, provide Al, Si and O element sources and serve as a framework for forming crystals, silicic acid and sodium carbonate react around the aluminum silicatefibers to form spherical dendrites, and NaAlSi2O6 crystallization under normal pressure is achieved; the preparation under the normal pressure condition solves the problem of the traditional method for realizing jadeite crystallization at high temperature and high pressure, and reduces the preparation conditions and cost. The product is uniform in structure and semitransparent, and contains jadeite glass ceramics formed by mixing amorphous glass bodies and crystallized jadeite crystals.

Description

Technical field[0001]The present invention belongs to the field of material synthesis, and more particularly to a method of preparing an emerald microcrystalline glass.Background technique[0002]Microcrystalline glass is also called microcrystalline jade or ceramic glass, and there is no rule with the atomic arrangement inside the conventional glass, and the microcrystalline glass is a basic glass, which is crystallized by crystallization at a certain temperature, and the glass is uniformly precipitated. Crystals, form a polyphhetic complex of a dense crystalline phase and glass phase, which has double characteristics of glass and ceramics. This makes a variety of excellent performance, such as: 1) high strength, good mechanical strength; 2) has excellent electrical properties, low dielectric loss, excellent electrical insulation; 3) has good thermal performance, The thermal expansion coefficient is low, the thermal vibration stability is good, the deformation temperature is high; 4)...

AI Technical Summary

Problems solved by technology

The main problem in the preparation of jadeite glass-ceramics is the heat treatment process, and it is difficult to crystallize in the glass matrix to form jadeite crystallites.

Images