High-alumina glass with rapid ion exchange

A high-alumina glass and ion exchange technology, applied in the field of glass materials, can solve the problems of reduced ion exchange efficiency and low compressive stress layer, and achieve the effects of improving chemical toughening performance and melting performance, high surface stress, and increasing intrinsic strength

Inactive Publication Date: 2019-01-29
KORNERSTONE MATERIALS TECH
View PDF5 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, the stress relaxation of glass can be reduced by reducing the temperature of ion exchange, so as to maintain a high surface compressive stress value, but at the same time, the efficiency of ion exchange will be reduced, resulting in a too low compressive stress layer, so it is not advisable

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
  • High-alumina glass with rapid ion exchange
  • High-alumina glass with rapid ion exchange

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0036] 1) Test sample preparation

[0037] According to the formula in Table 1, weigh the glass raw materials and mix them respectively (in order to obtain more stable measurement results, chemical-grade raw materials should be selected); In the furnace, gradually raise the temperature to 1650°C, keep it warm for 3 to 8 hours, and accelerate the discharge of bubbles and homogenize the glass to eliminate them by stirring. After melting, pour the molten liquid into a heat-resistant stainless steel mold for molding, then take out the glass block and move it into a box-type annealing furnace, heat treatment at 600°C for 2 hours, and then lower it to 550°C at a rate of less than 1°C / min , and then naturally cooled to room temperature.

[0038] 2) Ion exchange method

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
depthaaaaaaaaaa
Login to view more

Abstract

The invention discloses high-alumina glass with rapid ion exchange. The high-alumina glass with rapid ion exchange comprises, in percent by molar, 55-65% of SiO2, 15-19% of Al2O3, 3-10% of Na2O, 1.5-5% of B2O3, 4-10% of P2O5, 4-7% of Li2O, 3-7% of MgO, 20-50% of SnO and the balance K2O. The intrinsic strength of the glass is improved through increase of the content of Al2O3 in the glass, and meanwhile the chemical tempering property and melting property of the glass are further improved through reasonably adjustment of the content of Li2O and P2O5 in the glass, so that surface stress and a deeper stress layer of the glass are obtained in a short time; and meanwhile a double stress layer on the glass surface can be obtained through chemical reinforcement, and the glass can be used as protective glass for mobile phones and other touch screen-containing electronic products.

Description

technical field [0001] The invention belongs to the technical field of glass materials, and in particular relates to a high-alumina glass capable of rapid ion exchange. Background technique [0002] With the continuous increase of smartphone screens, glass has become an important part of the overall structural design. In the complete machine failure test, glass breakage often occurs in the complete machine drop test. The reason for this is that the existence of micro-cracks has the greatest impact on the actual strength of the glass. In order to prevent the expansion of micro-cracks and improve the strength of glass, chemical reinforcement is a well-known technology in the industry. [0003] At present, the main development direction of glass is to promote the ion exchange capacity of glass. When the glass undergoes ion exchange, the ion exchange effect of the glass depends on the temperature and time of ion exchange. The higher the temperature, the faster the ion exchange...

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): C03C21/00C03C3/097
CPCC03C3/097C03C21/002
Inventor 陈招娣梁新辉林威廷洪立昕
Owner KORNERSTONE MATERIALS TECH
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