Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Glass composition, microcrystalline glass as well as preparation method and application of microcrystalline glass

A technology of glass composition and glass-ceramics, which is applied in glass manufacturing equipment, glass molding, glass rolling, etc., can solve the problem of reducing the content of glass-ceramic crystals, high haze, and the lack of optimal performance of glass-ceramics To achieve the effect of excellent strengthening performance, reducing b value and haze

Inactive Publication Date: 2022-03-18
SHENZHEN NEW KIBING TECH CO LTD
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of preparing glass-ceramics, due to factors such as the agglomeration of glass components, the interface morphology of the crystal phase, and the appearance of crystal grains, the b-value and haze of the currently-prepared transparent glass-ceramics are relatively large, and the macroscopic performance is The transmitted light is yellowish, which affects the transmittance and performance of glass-ceramic
During the chemical strengthening process of glass-ceramic, the lithium in the crystalline phase participates in the chemically strengthened ion exchange, which reduces the crystal content in the glass-ceramic, and at the same time the interlocking structure of the twin crystal phase is destroyed, so that the optimal performance of the glass-ceramic cannot be exerted.

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
  • Glass composition, microcrystalline glass as well as preparation method and application of microcrystalline glass
  • Glass composition, microcrystalline glass as well as preparation method and application of microcrystalline glass
  • Glass composition, microcrystalline glass as well as preparation method and application of microcrystalline glass

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0067] In addition, the present invention also proposes a preparation method of glass-ceramics, which is used to prepare the above-mentioned glass-ceramics, such as figure 1 shown, including the following steps:

[0068] Step S10, weighing the above-mentioned glass composition.

[0069] In step S20, the glass composition is mixed and melted, then clarified, homogenized, shaped, annealed, and finally cut to obtain a base glass.

[0070] Specifically, in step S20, the forming method includes float forming, overflow forming, calender forming or slit down-draw forming. Other clarification, homogenization, annealing and cutting processes are conventional processes in the field of glass technology, and will not be described here. After the above processes, the obtained basic glass has a thickness of 0.3-1.5 mm.

[0071] Step S30 , performing heat treatment on the basic glass to obtain a glass-ceramic.

[0072] Specifically, step S30 includes: raising the temperature of the basic gl...

Embodiment 1

[0080] (1) Weigh the glass composition, by mass percentage, including: SiO 2 72%, Al 2 o 3 7%, P 2 o 5 3%, Li 2 O12.5%, Na 2 O2% and ZrO 2 3.5%.

[0081] (2) The glass composition is mixed and then melted, then clarified, homogenized, shaped, annealed, and finally cut to obtain the base glass.

[0082] (3) The basic glass is heated from room temperature to 530°C in 20 minutes for nucleation treatment, and the nucleation treatment time is 3 hours; it is heated to 680°C in 30 minutes for crystallization treatment, and the crystallization treatment The time is 3h; cooled to room temperature to obtain glass-ceramics.

[0083] (4) An ion exchange bath is provided, which comprises 40% NaNO by mass percentage 3 and 60% KNO 3 , putting the glass-ceramics into the ion exchange bath for salt bath after pretreatment to obtain chemically strengthened glass-ceramics, the salt bath strengthening temperature is 420°C, and the salt bath strengthening time is 3h.

[0084] The raw ma...

Embodiment 8 to 14

[0101] Table 2 Examples 8 to 14 glass composition components and glass properties

[0102]

[0103]

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
thicknessaaaaaaaaaa
hazeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a glass composition, glass ceramic and a preparation method and application of the glass ceramic, and the glass composition comprises the following components in percentage by mass: 72 to 74.3 percent of SiO2, 7 to 8.5 percent of Al2O3, 1.8 to 3 percent of P2O5, 0.2 to 12.5 percent of Li2O, 0.5 to 2 percent of Na2O and 3.5 to 4.7 percent of ZrO2. According to the technical scheme, the components SiO2, Al2O3, P2O5, Li2O, Na2O and ZrO2 in the glass composition are combined according to a specific proportion, and a glass ceramic crystallization process and a strengthening process are combined, so that the b value and the haze can be remarkably reduced, the crystal content is not excessively reduced after chemical strengthening, and an interlocking structure of double crystal phases is not excessively damaged; the microcrystalline glass with excellent strengthening performance is obtained.

Description

technical field [0001] The invention relates to the technical field of glass production, in particular to a glass composition, glass ceramics and a preparation method and application thereof. Background technique [0002] With the development of display technology, glass is often used in the protection of display devices. The cover glass used to protect electronic products on the market is generally high-aluminosilicate glass. High-alumina is conducive to the improvement of stress intensity and stress layer depth after ion exchange, but the glass has poor drop resistance. Studies have shown that 70% of electronic product damage is caused by inadvertent drops. [0003] Introducing a nucleating agent into the glass formula or adjusting the proportion of oxides in the formula will form one or more crystalline phases in the subsequent heat treatment process, which is called glass-ceramics. It has both the high permeability of glass and the high strength of ceramics, which can ...

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): C03C10/12C03C10/04C03C21/00C03B32/02C03B18/02C03B17/06C03B13/00
CPCC03C10/0027C03B32/02C03C21/002C03B18/02C03B17/06C03B13/00
Inventor 徐兴军陶武刚
Owner SHENZHEN NEW KIBING TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com