Rear glass cover plate for mobile phone

A rear cover and glass technology, which is applied in the field of glass cover of mobile phones, can solve problems such as insufficient wear resistance, easy scratches, and cracks, and achieve low crack generation rate, improved anti-drop performance, and reduced oil absorption rate. Effect

Inactive Publication Date: 2017-05-10
枞阳县铭瑞电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the development of electronic products such as smart phones, the styles and materials of products are gradually improved, and the quality of materials is also gradually improved. Among them, the glass back cover used for mobile phones is favored by a large number of consumers due to its fashionable and simple appearance, but due to its Insufficient wear resistance, easy to scratch, and may appear yellowing and cracks after long-term use. Therefore, further research on the glass back cover of the mobile phone is needed to improve its durability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] A glass back cover for a mobile phone, made of the following raw materials in parts by weight: 15 parts of modified wollastonite acicular powder, 4 parts of phosphogypsum, 10 parts of nano rubber powder, 6 parts of mother-of-pearl powder, fluorosilicon 4 parts of sodium bicarbonate, 0.8 parts of ammonium pentaborate, 2 parts of 2-ethylimidazole, 3 parts of melamine cyanurate, 1.5 parts of lanthanum hydroxide, 1 part of vanadium pentoxide, and 5 parts of thiourea dioxide;

[0012] Wherein, the preparation method of the modified wollastonite acicular powder is: put the wollastonite acicular powder into a hydrochloric acid solution with a mass concentration of 10% and soak it for 18 minutes, rinse it with deionized water until it is neutral, and then A modifier equivalent to 1.5% of its weight is added to wollastonite needle powder with a moisture content of 12%. The modifier consists of γ-propyltrimethoxysilane, octadecyltrimethylammonium chloride and 1 : Mixed at a weigh...

Embodiment 2

[0016] A glass back cover for a mobile phone, made of the following raw materials in parts by weight: 18 parts of modified wollastonite acicular powder, 5 parts of phosphogypsum, 9 parts of nano rubber powder, 7 parts of mother-of-pearl powder, fluorosilicon 3 parts of sodium bicarbonate, 0.4 parts of ammonium pentaborate, 2 parts of 2-ethylimidazole, 3 parts of melamine cyanurate, 1.2 parts of lanthanum hydroxide, 2 parts of vanadium pentoxide, 4 parts of thiourea dioxide;

[0017] Wherein, the modification method of wollastonite acicular powder and the preparation method of the glass rear cover of the mobile phone are the same as those in Example 1.

[0018] The glass rear cover prepared in this example has a density of 2.32g / cm³, a surface compressive stress of 610MPa, a Young's modulus of 73GPa, and a coefficient of thermal expansion of 82×10 ﹣7 / °C, the crack generation rate is less than 0.3%.

Embodiment 3

[0020] A glass back cover for a mobile phone, made of the following raw materials in parts by weight: 20 parts of modified wollastonite acicular powder, 4 parts of phosphogypsum, 8 parts of nano rubber powder, 8 parts of mother-of-pearl powder, fluorosilicon 3 parts of sodium bicarbonate, 0.5 parts of ammonium pentaborate, 2 parts of 2-ethylimidazole, 3 parts of melamine cyanurate, 1 part of lanthanum hydroxide, 2 parts of vanadium pentoxide, and 5 parts of thiourea dioxide;

[0021] Wherein, the modification method of wollastonite acicular powder and the preparation method of the glass rear cover of the mobile phone are the same as those in Example 1.

[0022] The glass rear cover prepared in this example has a density of 2.35g / cm³, a surface compressive stress of 620MPa, a Young's modulus of 75GPa, and a thermal expansion coefficient of 85×10 ﹣7 / °C, the crack generation rate is less than 0.3%.

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Abstract

The invention belongs to the technical field of a glass cover plate for a mobile phone, and more particularly relates to a rear glass cover plate for mobile phone. The rear glass cover plate is made of the following raw materials: modified needle-shaped wollastonite powder, phosphogypsum, nano-micelle powder, nacre powder, sodium fluorosilicate, ammonium pentaborate, 2-ethylimidazole, melamine cyanurate, lanthanum hydroxide, vanadium pentoxide and thiourea dioxide. Compared with the prior art, the invention has the following advantages: a variety of modifiers are adopted to modify the needle-shaped wollastonite powder to improve the compatibility with other raw materials, reduce water absorption rate and oil absorption rate, have low crack generation rate, obviously improve the processability, and are matched with other raw materials to prepare the rear glass cover plate; the rear glass cover plate has strong chemical resistance, can effectively resist yellowing after use for long time, has hardness, toughness and anti-fouling properties capable of reaching corresponding standards, has strong impact resistance and elastic modulus so as to improve the breaking resistance performance to a certain extent, and is used for a rear shell cover of the mobile to maintain attractiveness for long period and prolong the service life.

Description

technical field [0001] The invention belongs to the technical field of glass cover plates for mobile phones, and in particular relates to a glass rear cover plate for mobile phones. Background technique [0002] With the development of electronic products such as smart phones, the styles and materials of products are gradually improved, and the quality of materials is also gradually improved. Among them, the glass back cover used for mobile phones is favored by a large number of consumers due to its fashionable and simple appearance, but due to its The wear resistance is not enough, it is easy to scratch, and it may appear yellowing and cracks after long-term use. Therefore, further research on the glass back cover of the mobile phone is needed to improve its durability. Contents of the invention [0003] The object of the present invention is to provide a glass rear cover for mobile phones in view of the existing problems. [0004] The present invention is achieved throu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C6/06C03C14/00
CPCC03C1/00C03C14/00
Inventor 朱芳红朱明
Owner 枞阳县铭瑞电子科技有限公司
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