A kind of method for preparing jadeite glass-ceramic

A technology for glass-ceramic and jadeite, which is applied in glass forming, glass manufacturing equipment, manufacturing tools, etc., can solve problems such as the difficulty of jadeite crystallites, and achieve the effect of reducing the requirements of preparation conditions and the cost of preparation

Active Publication Date: 2022-07-19
XINXIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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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.

Method used

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  • A kind of method for preparing jadeite glass-ceramic
  • A kind of method for preparing jadeite glass-ceramic
  • A kind of method for preparing jadeite glass-ceramic

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Embodiment

[0022] With aluminum silicate fiber (model: SYGX-311, the composition mass ratio Al 2 O 3 : SiO 2 =48:50), silicic acid (H 2 SiO 3 ), sodium carbonate (Na 2 CO 3 ) as raw material, according to jade (NaAlSi 2 O 6 The theoretical mass fraction ratio of each element in the molecular formula of ) is weighed, and the following techniques and specific steps are used to synthesize jadeite samples by high temperature and normal pressure solid phase sintering method:

[0023] (1) Preparation of reaction starting materials

[0024] Firstly, the aluminum silicate fiber and silicic acid are crushed and mixed, and then mixed with sodium carbonate solution dissolved in deionized water, stirred to make the mixture fully uniform, and then the mixture is placed in a muffle furnace and kept at 160 °C for 2 hours. Take out, pulverize, grind and briquette the block to complete the preparation of the initial material;

[0025] (2) The first sintering

[0026] The briquetting initial mat...

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Abstract

The invention discloses a method for preparing jadeite glass-ceramics, and belongs to the technical field of material synthesis. The main points of the technical solution of the present invention are: using aluminum silicate fiber, silicic acid and sodium carbonate as raw materials, according to the jade NaAlSi 2 O 6 The theoretical mass fraction ratio of each element in the molecular formula is formulated, and the target product is sintered twice at high temperature and normal pressure through the initial treatment of the ingredients. The raw material of the present invention uses aluminum silicate fibers not only to provide Al, Si, O element sources, but also as a skeleton for forming crystals, silicic acid and sodium carbonate react around them, resulting in the formation of spherical dendrites, realizing NaAlSi under normal pressure. 2 O 6 Crystallization; preparation under normal pressure conditions solves the traditional method of realizing jadeite crystallization at high temperature and high pressure, and reduces preparation conditions and costs. The obtained product has a uniform and translucent structure, and contains a jadeite glass-ceramic mixed with an amorphous glass body and a crystallized jadeite crystal.

Description

technical field [0001] The invention belongs to the technical field of material synthesis, and in particular relates to a method for preparing jadeite glass-ceramics. Background technique [0002] Glass-ceramic is also called micro-crystalline jade or ceramic glass. It has no rules in the arrangement of atoms inside ordinary glass. Glass-ceramic is a basic glass with a specific composition. After crystallization and heat treatment at a certain temperature, a large number of tiny particles are uniformly precipitated in the glass. Crystal, forming a dense multiphase complex of microcrystalline phase and glass phase, which has the dual characteristics of glass and ceramics. This makes the glass-ceramic concentrate a variety of excellent properties, such as: 1) high strength, good mechanical strength; 2) excellent electrical properties, low dielectric loss rate, excellent electrical insulation; 3) good thermal properties, Low thermal expansion coefficient, good thermal vibratio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C10/10C03C4/02C03B19/06C03C6/02
CPCC03C10/0018C03C4/02C03B19/06C03C1/00
Inventor 郭志超刘大平王金龙刘岩
Owner XINXIANG UNIV
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