Preparation method for zirconia ceramic rear cover of mobile phone

A zirconia ceramic and mobile phone back cover technology is applied in the field of preparation of high toughness zirconia ceramic mobile phone back cover, which can solve the problems of slow drying and degumming process, unsuitable for mass production, unsuitable for thin-walled parts molding, etc. Achieve the effect of reducing the amount of subsequent processing, meeting mass production, and improving impact resistance

Active Publication Date: 2015-10-07
NANCHONG THREE CIRCLE ELECTRONICS +1
View PDF7 Cites 86 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, dry compression molding and injection molding are only suitable for forming thick parts with a thickness greater than 1mm. For large-sized and thin-walled parts, it is difficult for these two molding methods to avoid uneven material density caused by uneven molding pressure. Parts are easily deformed or even cracked during sintering
Patent 201410158633.5 "a ceramic mobile phone shell and its preparation method" provides a method of gel injection molding to form a zirconia ceramic mobile phone back cover. Although it can solve the deformation and cracking problems during the sintering process of the green body, the gel injection The green body needs a slow drying and debinding process
Therefore, the method is inefficient and not suitable for large-scale production
[0004]

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
  • Preparation method for zirconia ceramic rear cover of mobile phone
  • Preparation method for zirconia ceramic rear cover of mobile phone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: An embodiment of the preparation method of the zirconia ceramic mobile phone back cover of the present invention

[0028] A kind of embodiment of the preparation method of the zirconia ceramic mobile phone back cover of the present invention, described method comprises the following steps:

[0029] (1) Doping modification of nano-zirconia powder

[0030] Get 10kg of yttrium oxide-stabilized high-purity nano-zirconia powder, wherein the molar content of yttrium oxide is 2% of the nano-zirconia molar content in the yttria-stabilized high-purity nano-zirconia powder, and use deionized water to prepare For a suspension with a solid content of 60%, add 0.8wt% ammonium polyacrylate dispersant to the above suspension, add Al in the form of a soluble salt 2 o 3 、TiO 2 and SiO 2 , where the Al 2 o 3 The soluble salt of AlCl 3 ·6H 2 O, the Al 2 o 3 The molar content is 0.5% of the molar content of nano-zirconia in the yttria-stabilized high-purity nano-zirco...

Embodiment 2

[0037] Embodiment 2: An embodiment of the preparation method of the zirconia ceramic mobile phone back cover of the present invention

[0038] A kind of embodiment of the preparation method of the zirconia ceramic mobile phone back cover of the present invention, described method comprises the following steps:

[0039] (1) Doping modification of nano-zirconia powder

[0040] Get 10kg of yttrium oxide-stabilized high-purity nano-zirconia powder, wherein the molar content of yttrium oxide is 2.5% of the nano-zirconia molar content in the yttria-stabilized high-purity nano-zirconia powder, and prepare it with deionized water For a suspension with a solid content of 60%, add 0.5wt'% ammonium polyacrylate dispersant to the above suspension, add Al in the form of a soluble salt 2 o 3 、TiO 2 and SiO 2 , where the Al 2 o 3 The soluble salt of Al(NO) 3 9H 2 O, the Al 2 o 3 The molar content is 0.35% of the molar content of nano-zirconia in the yttria-stabilized high-purity na...

Embodiment 3

[0047] Embodiment 3: An embodiment of the preparation method of the zirconia ceramic mobile phone back cover of the present invention

[0048] A kind of embodiment of the preparation method of the zirconia ceramic mobile phone back cover of the present invention, described method comprises the following steps:

[0049] (1) Doping modification of nano-zirconia powder

[0050] Get 10kg of yttrium oxide-stabilized high-purity nano-zirconia powder, wherein the molar content of yttrium oxide is 3% of the nano-zirconia molar content in the yttria-stabilized high-purity nano-zirconia powder, and use deionized water to prepare For a suspension with a solid content of 40%, add 0.2wt% ammonium polyacrylate dispersant to the above suspension, add Al in the form of a soluble salt 2 o 3 、TiO 2 and SiO 2 , where the Al 2 o 3 The soluble salt of AlCl 3 ·6H 2 O, the Al 2 o 3 The molar content is 0.25% of the molar content of nano-zirconia in the yttria-stabilized high-purity nano-zi...

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
Thicknessaaaaaaaaaa
Strengthaaaaaaaaaa
Fracture toughnessaaaaaaaaaa
Login to view more

Abstract

The invention provides a preparation method for a zirconia ceramic rear cover of a mobile phone. The zirconia ceramic rear cover of the mobile phone prepared in the invention has the characteristics of high strength, high toughness, high size precision, etc. The rear cover with a maximum size is applicable to a mobile phone with a size of 6 inches, and the thickness of the rear cover may be 0.15 to 0.8 mm. Moreover, the zirconia ceramic rear cover may be in a flat shape, a 2D shape, a 3D shape or other complex shapes in virtue of different shaping dies, so requirements of mobile phones of different specifications can be met. The preparation method for the zirconia ceramic rear cover of the mobile phone has high production efficiency and is suitable for large-scale production.

Description

technical field [0001] The invention relates to a mobile phone back cover, in particular to a preparation method for a high-toughness zirconia ceramic mobile phone back cover. Background technique [0002] The mobile phone shell is not only the most direct way to protect the body, but also an important factor affecting its cooling effect, weight, and aesthetics. Therefore, the materials for making mobile phone casings are required to have the characteristics of high strength, good heat resistance and wear resistance, electromagnetic shielding, stable dimensions, and good appearance. At present, most of the mobile phone casings on the market are made of engineering plastics, metals, glass and other materials. These materials still have disadvantages such as low hardness, easy scratches, deformation, fading, environmental protection, and heat resistance. In recent years, ceramic mobile phone casings with the characteristics of beautiful appearance, jade texture, wear resistan...

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
IPC IPC(8): C04B35/48C04B35/622
Inventor 谢灿生邱基华
Owner NANCHONG THREE CIRCLE ELECTRONICS
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