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Glass-ceramics and preparation method thereof

A technology of glass-ceramics and crystallite, which is applied in the field of glass-ceramics and its preparation, can solve problems such as high melting temperature, many refractory components, and glass-ceramics cannot meet the heat shock resistance temperature requirements of reflective cups, and achieve mechanical The effect of high strength, good product performance and low cost

Active Publication Date: 2014-02-26
江苏虎石晶研新材料研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many refractory components in the composition of existing glass-ceramics, and the melting temperature is high, generally above 1550°C-1650°C, and the produced glass-ceramics cannot meet the increasingly high thermal shock resistance temperature requirements of reflectors; Therefore urgently need to develop a kind of glass-ceramic that satisfies the use requirement of the reflective cup on the projector

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] First, according to the weight ratio, 58% SiO 2 , 21% Al 2 o 3 , 6% Li 2 O, 4% B 2 o 3 , 2% Na 2 O and K 2 O mixture, 5% mixture of MgO and CaO and 1.5% TiO 2 , 1% ZrO 2 , 2.5% P 2 o 5 and 1% F weighed out, and then all of them are put into a V-shaped stirrer to fully stir and mix as a solid glass raw material; then the prepared solid glass raw material is put into an electric furnace or a crucible furnace, and heated to make the temperature in the furnace exceed 1400℃ and kept for more than 24 hours, the solid glass raw material can be dissolved into a high-temperature glass stock solution, and the bubbles and foreign objects generated during the dissolution of the solid glass raw material can be removed at the same time; sheet; finally, put the prepared glass original sheet into a high-temperature furnace for heat treatment. The heat treatment process includes two stages of crystallite nucleation and crystallite growth. In the stage of crystallite nucleation...

Embodiment 2

[0026] Firstly, 63% SiO 2 , 18% Al 2 o 3 , 6% Li 2 O, 2% B 2 o 3 , 3% Na 2 O and K 2 O mixture, 4% CaO, SrO and BaO mixture and 0.8% TiO 2 , 1.2% ZrO 2 , 1.5% P 2 o 5 and 0.5% F weighed out, and then put all of them into a V-shaped stirrer to fully stir and mix them as solid glass raw materials; then put the prepared solid glass raw materials into an electric furnace or a crucible furnace, and heat the furnace to make the temperature exceed 1420℃ and kept for more than 24 hours, the solid glass raw material can be dissolved into a high-temperature glass stock solution, and the bubbles and foreign objects generated during the dissolution of the solid glass raw material can be removed at the same time; sheet; finally, put the prepared glass original sheet into a high-temperature furnace for heat treatment. The heat treatment process includes two stages of crystallite nucleation and crystallite growth. In the stage of crystallite nucleation, the temperature in the high-...

Embodiment 3

[0028] First, the 52% SiO 2 , 20% Al 2 o 3 , 8% Li 2 O, 6% B 2 o 3 , 1.5% Na 2 O and K 2 A mixture of O, 5.5% of MgO, a mixture of SrO and ZnO, and 2% of TiO 2, 2.5% ZrO 2 , 1.5% P 2 o 5 and 1% F weighed out, and then all of them are put into a V-shaped stirrer to fully stir and mix as a solid glass raw material; then the prepared solid glass raw material is put into an electric furnace or a crucible furnace, and heated to make the temperature in the furnace exceed 1450℃ and kept for more than 24 hours, the solid glass raw material can be dissolved into a high-temperature glass stock solution, and the bubbles and foreign objects generated during the dissolution of the solid glass raw material can be removed at the same time; sheet; finally, put the prepared glass original sheet into a high-temperature furnace for heat treatment. The heat treatment process includes two stages of crystallite nucleation and crystallite growth. In the stage of crystallite nucleation, the...

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Abstract

The invention discloses glass-ceramics and a preparation method of the glass-ceramics. The chemical constitution of the glass-ceramics is formed by the following raw materials selected from one or more of: 50-70 wt% of SiO2, 15-30 wt% of Al2O3, 2-10 wt% of Li2O, 0-9 wt% of B2O3, 0-5 wt% of R2O, 0-10 wt% of RO, 0-5 wt% of TiO2, 0-5 wt% of ZrO2, 0-9 wt% of P2O5 and 0-3 wt% of F, wherein the R2O is one or more of the Li2O, Na2O and K2O; RO is one or more of MgO, CaO, SrO, BaO and ZnO. The glass-ceramics accordance with the requirements can be obtained by the steps of preparing the raw materials, fusing the raw materials, molding glass and carrying out heat treatment. The glass-ceramics and the preparation method of the glass-ceramics, provided by the invention, have the advantages of simple process route, high yield, good product performance, short consumed time and low cost.

Description

technical field [0001] The invention relates to the technical field of glass-ceramic and its preparation, in particular to a glass-ceramic which can be used for a reflective cup on a projector, a high-temperature-resistant glass panel, a computer hard disk substrate, and a measuring standard part, and a preparation method thereof. Background technique [0002] Glass-ceramic is a specific composition glass with high chemical composition and melting requirements. After heat treatment at a certain temperature, it becomes a composite material with uniform distribution of microcrystals and glass phases, also known as ceramic glass. It has excellent properties such as low expansion coefficient, high mechanical strength, good chemical stability and thermal stability, high service temperature and hard wear resistance. Because the glass composition can be adjusted in a wide range, the precipitated crystal phase is fine and evenly distributed, because the glass-ceramic material has ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C10/14C03C10/16C03B32/02
Inventor 蒋达光汤浩
Owner 江苏虎石晶研新材料研究院有限公司
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