A kind of glass ceramics with high crystal content and preparation method thereof

Abstract

Disclosure of the Invention The present invention also provides a glass-ceramic with a high crystal content and a preparation method thereof. The method for preparing the glass-ceramic with a high crystal content includes the following steps: S1: melting at a temperature of 1500°C to 1600°C glass, and obtain plain glass with certain dimensions; S2: place the plain glass obtained in step S1 at a temperature T1 of 500°C to 550°C, heat for 1h to 5h, and then place the plain glass at a temperature T2 of 550°C Under the condition of ~700°C, heat for 1h~6h, then put it under the condition of temperature T3 of 700°C~800°C, and heat for 0~4h; S3: repeat step S2 at least twice to prepare glass ceramics. The invention ensures that the mass percentage of crystals in the glass-ceramic is 70%-95%, improves various performances of the glass-ceramic through crystals with a super-mass fraction, satisfies various requirements of actual production, and enhances the practicability of the glass-ceramic.

Description

technical field [0001] The invention relates to the technical field of glass production, in particular to a glass-ceramic with high crystal content and a preparation method thereof. Background technique [0002] Glass-ceramics refers to the basic glass with a specific composition added with a crystal nucleating agent (or without a crystal nucleating agent). It is crystallized and heat-treated under a certain temperature system, and a large number of tiny crystals are uniformly precipitated in the glass to form a dense microcrystalline glass. A multiphase complex of crystalline and glassy phases. Glass-ceramic preparation methods include bulk crystallization method (melting method), sintering method, sol-gel method, etc. In the industrial production process, bulk crystallization method is usually used to prepare glass-ceramics. The steps are: (1) by adding crystal nuclei (2) After heat treatment to make the crystal nuclei grow, other production processes are the same as ordi...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art, to provide a glass-ceramic with a high crystal content and a preparation method thereof, to solve the problem in the prior art that the proportion of the crystal phase in the glass-ceramic is relatively low, which reduces the crystallized glass-ceramics. Various properties reduce the practicality of glass-ceramics

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