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Glass material and preparation method and product thereof

A technology of glass material and integral material, applied in the field of glass-ceramic and its preparation, can solve the problems of single color of high-strength cover plate, difficult to obtain the depth of stress layer, low hardness, etc.

Active Publication Date: 2021-08-03
CHANGSHU JIAHE DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

5G communication technology increases the transmission signal to a higher frequency. If the traditional metal back cover is used, the transmission of the signal will be affected by the severe dielectric loss.
[0010] 1. In terms of performance: high-alumina glass has low mechanical properties, low hardness, is not resistant to scratches, and is difficult to melt and high in cost. It has been unable to meet the needs of large-screen and lightweight development of mobile terminals; the existing microcrystalline Glass materials also have problems such as high brittleness, difficulty in obtaining a large stress layer depth, uneven crystallization, and easy emulsification.
[0011] 2. Appearance: the traditional high-strength cover plate has a single color, which is not enough to meet the needs of modern individuality

Method used

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  • Glass material and preparation method and product thereof
  • Glass material and preparation method and product thereof
  • Glass material and preparation method and product thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] The first step, component weighing, mixing

[0073] According to each component and its mass fraction listed in Table 1, Example 1, select the corresponding raw materials, mix the raw materials evenly, and put the uniform mixture into a platinum or alumina crucible;

[0074] The second step, the preparation of the basic glass plate

[0075] According to the ease of melting of the glass composition, the temperature of 1450° C. was kept in an electric furnace for 20 hours to make it melt uniformly, and a basic glass plate with a thickness of 1.0 mm was formed by the ingot cutting method.

[0076] The third step, crystallization heat treatment

[0077] Carry out crystallization heat treatment on the obtained basic glass plate. The specific method is to nucleate by holding at 650°C for 2 hours, and carry out crystal growth at 760°C for 8 hours, and then cool with the furnace to produce glass-ceramics. The process system of glass crystallization heat treatment of other exa...

Embodiment 2

[0084] The first step, component weighing, mixing

[0085] According to each component listed in Table 1 Example 2 and their mass fraction ratios, select corresponding raw materials, mix the raw materials uniformly, and put the uniform mixture into a platinum crucible;

[0086] The second step, the preparation of the basic glass plate

[0087] According to the ease of melting of the glass composition, it was kept in an electric furnace at a temperature of 1420° C. for 20 hours to make it melt uniformly, and a basic glass plate with a thickness of 2.0 mm was formed by the ingot cutting method.

[0088] The third step, crystallization heat treatment

[0089] Carry out crystallization heat treatment on the obtained basic glass plate. The specific method is to nucleate by holding at 630°C for 4 hours, and carry out crystal growth at 730°C for 3 hours, and then cool with the furnace to produce glass ceramics.

[0090] The fourth step, mechanical processing of glass-ceramics

[0...

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Abstract

The invention discloses a glass material and a preparation method and a product thereof. The glass material contains a lithium salt crystal phase and a phosphate crystal phase, the crystallinity of the whole material is 40-95%, the lithium salt crystal phase accounts for 40-90 wt%, the phosphate crystal phase accounts for 2-15 wt%, the lithium salt crystal phase is one or more of lithium silicate, lithium disilicate and petalite, and the phosphate crystal phase is aluminum phosphate or / and aluminum metaphosphate. The glass material has a Vickers hardness (Hv) of 900 kgf / mm<2> or more after tempering. The glass material or the substrate provided by the invention is suitable for protective members of mobile terminal equipment, optical equipment and the like, and has high hardness and strength. In addition, the material can also be used for outer frame members of portable electronic equipment and other decorations.

Description

technical field [0001] The invention belongs to the technical field of glass-ceramics, in particular relates to glass-ceramics with excellent mechanical properties, a preparation method thereof and products thereof. Background technique [0002] In today's information interconnection, 5G communication has become the mainstream of the industry. 5G communication technology increases the transmission signal to a higher frequency. If the traditional metal back cover is used, the transmission of the signal will be affected by the severe dielectric loss. Moreover, the development of wireless charging technology also puts forward higher requirements for mobile terminal covers. At present, the main mobile phone cover uses high-alumina glass material as the back cover material. [0003] Mobile terminal electronic devices generally use glass materials as screen and back cover materials to protect the corresponding electronic devices. However, as the display screens of mobile termin...

Claims

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Application Information

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IPC IPC(8): C03C3/097C03C4/02C03C1/04C03C10/00C03C21/00C03B32/02
CPCC03C3/097C03C4/02C03C1/04C03C10/0009C03C21/002C03B32/02C03C10/0027Y02P40/57C03B19/02C03B23/033C03B33/02B24B7/242C03C2204/00C03C10/00
Inventor 周卫卫张福军田启航张继红
Owner CHANGSHU JIAHE DISPLAY TECH CO LTD
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