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Lithium-aluminum-containing silicate glass capable of rapidly exchanging ions

A lithium-aluminosilicate, ion-exchange technology, used in glass tempering, glass manufacturing equipment, manufacturing tools, etc., can solve the problems of reduced surface compressive stress, difficult to quickly obtain high ion-exchange layer depth, etc., and achieve high surface pressure. Stress, improve the resistance to external force damage, reduce the effect of stress relaxation

Inactive Publication Date: 2018-09-28
KORNERSTONE MATERIALS TECH
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  • Abstract
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  • Claims
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Problems solved by technology

[0008] Patent US20170197869Al provides a strengthened glass, but the glass contains sufficiently high B 2 o 3 composition, will lead to a decrease in the surface compressive stress, and inhibit the ion exchange in the glass, making it difficult to quickly obtain a high ion exchange layer depth

Method used

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  • Lithium-aluminum-containing silicate glass capable of rapidly exchanging ions
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  • Lithium-aluminum-containing silicate glass capable of rapidly exchanging ions

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Embodiment Construction

[0038] In order to further disclose rather than limit the present invention, the present invention will be further described in detail below in conjunction with examples.

[0039] 1) Test sample preparation

[0040] In the embodiment of the present invention, Table 2 is that No. 2 formula in Table 1 is prepared into a batch according to the purity and moisture content of each raw material; after weighing and mixing the raw materials shown in Table 1, to obtain a uniform batching; then the batch Transfer from the plastic bottle to about 800ml platinum crucible, put the platinum crucible into the silicon-molybdenum rod high-temperature furnace, gradually raise the temperature to 1650°C, hold the temperature for 3-8 hours, accelerate the discharge of glass bubbles and homogenize and eliminate the glass 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 fur...

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Abstract

The invention belongs to the field of glass materials, and particularly relates to lithium-aluminum-containing silicate glass capable of rapidly exchanging ions. The glass comprises, in mole percent,58-68% of SiO2, 12-18% of Al2O3, 4-8% of Li2O, 7-11% of Na2O, 0.1-8% of MgO, 0-3% of ZnO, 0-2% of SrO, 1-4% of P2O5 and 0-0.5% of SnO2, wherein R2O / Al2O3 <= 1.2, 2.5 <=RO<= 11, the RO is summation ofdivalent cation oxides in the lithium-aluminum-containing silicate glass, and the R2O is summation of monovalent cation oxides in the lithium-aluminum-containing silicate glass. According to the glass, lithium and phosphorus components are simultaneously introduced into the glass, the content of sodium in the glass is reasonably controlled, and the depths of high-ionic exchanging layers can be rapidly exchanged, so that the scratch resistance of the glass is improved.

Description

technical field [0001] The invention belongs to the field of glass materials, in particular to a lithium-containing aluminosilicate glass capable of rapid ion exchange. Background technique [0002] Aluminosilicate glass materials are widely used in protective covering products of electronic display products after being strengthened by ion exchange. It has higher surface compressive stress (Compressive Stress, referred to as CS) and deeper surface compressive stress layer depth (Depth of Layer, referred to as DOL). [0003] Aluminosilicate glass is generally strengthened by using ions with smaller ionic radius on the glass surface (such as Na + and Li + ) and ions in molten salts (such as K + and Na + ) replace each other, where due to Li + Has a smaller ionic radius, exchange rate and exchange depth than Na + Swap is better. A number of strengthenable aluminosilicate glasses are disclosed in the prior art. [0004] Patent CN102971267A provides an ion-exchangeable ...

Claims

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Application Information

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IPC IPC(8): C03C3/097C03B27/03C03C21/00
CPCC03B27/03C03C3/097C03C21/002
Inventor 梁新辉陈招娣罗云侠何石忠林美灵洪立昕
Owner KORNERSTONE MATERIALS TECH
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