Ceramic glass, curved ceramic glass and preparation method thereof

A technology of ceramic glass and glass, applied in the preparation of curved ceramic glass, the field of curved ceramic glass, can solve the problems of devitrification, large size, reduced glass transmittance, etc., to reduce the softening temperature, increase the secondary crystallization temperature, The effect of not reducing the transmittance

Pending Publication Date: 2022-03-25
晋城市光机电产业协调服务中心(晋城市光机电产业研究院) +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The ceramic glass near the softening temperature undergoes uncontrollable crystallization (secondary crystallization), and the precipitated crystal is not a spinel crystal phase, and the size is large. In addition, the original spinel crystal phase of the ceramic glass will Re-growth will occur, and the size uniformity of the re-growth is difficult to control, which destroys the conditions for the glass to maintain high transmittance, resulting in a decrease in the transmittance of the ceramic glass after hot pressing, and may devitrify in severe cases

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ceramic glass, curved ceramic glass and preparation method thereof
  • Ceramic glass, curved ceramic glass and preparation method thereof
  • Ceramic glass, curved ceramic glass and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0085] see figure 1 , the application also provides the preparation method of above-mentioned ceramic glass, and this preparation method comprises the following steps:

[0086] Step S1, providing a base glass, the base glass includes the following components calculated by mole percentage: 58%-68% SiO 2 ;16%~26% Al 2 o 3 ;The total amount is 3%~12% of ZnO+MgO; the total amount is 3%~8% of TiO 2 +ZrO 2 ; Among them, Al 2 o 3 The molar ratio to the total content of ZnO+MgO is 2.2 to 3.3; SiO 2 with Al 2 o 3 The molar ratio of the total content of +ZnO+MgO is 2.1-3.9.

[0087] Mix the above-mentioned components that make up the basic glass into a platinum crucible, melt it in a high-temperature lifting furnace at 1610°C to 1650°C, then shape the molten glass in a calender, and then put it into an annealing furnace for a long time at the annealing point. Gradient annealing to eliminate the internal stress of the glass. After the annealing is completed, the six sides of t...

Embodiment 2～4

[0115] Embodiment 2~4 and comparative example

[0116] The preparation method is the same as in Example 1, and the recipes and test parameters are shown in Table 1 and Table 2.

[0117] As can be seen from Table 2, the embodiment 1-4 of the present application controls the crystallinity and the average crystal size simultaneously through formula adjustment, so that the softening temperature of the ceramic glass of the embodiment 1-4 is compared with the comparative example 1, and the softening temperature is all reduced, while The secondary crystallization temperature all increased, and the difference between the softening temperature and the secondary crystallization temperature of the ceramic glasses in Examples 1-4 was greater than 150°C. In this way, the gap between the molding temperature range and the secondary crystallization temperature range of the ceramic glass during the hot-press molding process can be easily controlled to make the gap as large as possible, thereby...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
crystal sizeaaaaaaaaaa
thicknessaaaaaaaaaa
crystal sizeaaaaaaaaaa
Login to view more

Abstract

The invention discloses ceramic glass, the difference between the secondary crystallization temperature and the softening temperature of the ceramic glass is greater than or equal to 150 DEG C, the ceramic glass is obtained by carrying out heat treatment on base glass, the ceramic glass contains single spinel crystals, the crystallinity is 12%-50%, the average crystal size is 6-30nm, and the base glass comprises 58%-68% by mole of SiO2; 16% to 26% of Al2O3; 3% to 12% of ZnO + MgO; 3% to 8% of TiO2 and ZrO2; wherein the molar ratio of the Al2O3 to the total content of ZnO and MgO is 2.2 to 3.3; and the molar ratio of the SiO2 to the total content of Al2O3, ZnO and MgO is 2.1-3.9. The invention further discloses the curved ceramic glass and a preparation method thereof. The ceramic glass provided by the invention has relatively high transmittance after hot press molding.

Description

technical field [0001] The invention relates to the technical field of ceramic glass, in particular to a ceramic glass, a curved ceramic glass made of the ceramic glass and a preparation method of the curved ceramic glass. Background technique [0002] Containing polycrystalline phases (such as quartz, enstatite) spinel nanocrystalline ceramic glass is used in disk substrates because of its good mechanical properties, but its transparency is low, usually between translucent and opaque, and cannot be used in protective covers . Single spinel nanocrystalline ceramic glass (including zinc-aluminum spinel and magnesium-aluminum spinel) has a small expansion coefficient, which is about one-tenth of the expansion coefficient of spinel nanocrystalline ceramic glass with non-unique crystal phase. The curvature is small, and it can be molded into a protective cover with a complex shape; moreover, the single spinel nanocrystalline ceramic glass has a single crystal phase and a small ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/02C03B32/02
CPCC03C10/00C03B32/02
Inventor 罗恺成磊石懿瑾刘婷婷袁晓波鲍亚楠
Owner 晋城市光机电产业协调服务中心(晋城市光机电产业研究院)
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap