Preparation method of microcrystalline glass applied to 5G communication mobile terminal

Abstract

The invention provides a preparation method of a microcrystalline glass applied to a 5G communication mobile terminal, and belongs to the technical field of microcrystalline glass. The preparation method comprises following steps: step A, preparing following raw materials in parts by weight: 45 to 75 parts of quartz sand, 10 to 25 parts of aluminum oxide, 14.5 to 39.6 parts of sodium carbonate, 2.3 to 9.2 parts of potassium nitrate, 0 to 12.5 parts of lithium carbonate, 0 to 41 parts of magnesium carbonate, 0 to 8 parts of titanium oxide, 0 to 20 parts of zirconium oxide, 0 to 10 parts of zincoxide, 0 to 3 parts of rubidium oxide, 0 to 5 parts of gallium oxide, 0 to 3 parts of europium oxide, 0 to 9 parts of ammonium dihydrogen phosphate, 0 to 3 parts of antimony oxide, 0 to 3 parts of yttrium oxide, 0 to 3 parts of cerium oxide, 0 to 5 parts of iron oxide, 0 to 2 parts of manganese oxide, 0 to 3 parts of nickel oxide, and mixing all raw materials to obtain a mixture; step B, meltingthe mixture; step C, moulding the melt; and step D, carrying out annealing, nucleation, and crystallization to obtain the microcrystalline glass. By controlling the raw materials and technology, the obtained front cover microcrystalline glass has high transmittance of visible light, high strength, and high hardness, and the obtained rear cover microcrystalline glass has high strength and low magnetic loss.

Description

technical field [0001] The invention belongs to the technical field of glass-ceramics, and relates to glass-ceramic applications applied to 5G communication mobile terminals or other glass applications requiring antimagnetism, light transmittance, strength, etc., and specifically relates to a glass-ceramic applied to 5G communication mobile terminals The preparation method, the preparation method of the present invention is used to prepare the glass-ceramic of the 5G communication mobile terminal, and through the combination control of the raw material and the process, it is possible to obtain a front cover glass with high visible light transmittance and high strength and hardness. Crystal glass material, and back cover glass-ceramic material with high strength and low magnetic loss. Background technique [0002] With the development of modern technology, the update speed of electronic display devices is accelerating. The requirement of portability, the transformation of 5G...

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Problems solved by technology

Crystallization heat treatment of aluminosilicate glass can obtain transparent glass-ceramics with spinel and quartz solid solution as the main crystal phase, which has high hardness and strength, but its impact resistance is not strong enough

[0005] In the patent document CN106242299A, a kind of glass-ceramics is disclosed, and the glass-ceramics precipitates MgAl 2 o 4 , MgTi 2 o 4 Isocrystalline phase, the transmittance after crystallization heat treatment is greater than 50%, and its mechanical properties have also been improved to a certain extent, but the production method mentioned is to use a crucible to melt and then pour it into a mold, which is difficult to achieve continuous production in large quantities, and there is no Publish the specific crystallization heat treatment process; and it solves the problem of poor color balance. Although sufficient compressive stress values ​​can be obtained through the ion exchange process, a deep stress layer cannot be formed, resulting in Breaks easily and cannot be used as a phone front or back cover

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