CN110218088A - A kind of mobile phone backboard and preparation method thereof based on zirconia ceramics - Google Patents
A kind of mobile phone backboard and preparation method thereof based on zirconia ceramics Download PDFInfo
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- CN110218088A CN110218088A CN201910519478.8A CN201910519478A CN110218088A CN 110218088 A CN110218088 A CN 110218088A CN 201910519478 A CN201910519478 A CN 201910519478A CN 110218088 A CN110218088 A CN 110218088A
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- C04B35/48—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates
- C04B35/49—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates containing also titanium oxides or titanates
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Abstract
The preparation method of the present invention relates to a kind of mobile phone backboard based on zirconia ceramics, the preparation method at least includes the following steps: will prepare raw material and passes sequentially through Granulation Equipments and ceramic molding equipment, ceramics by dry flouring technology is respectively adopted and the green compact with certain mechanical strength are prepared in ceramic molding, again the green compact are calcined to obtain greenwave at a lower temperature, is applied by spraying process and is placed it under the dry environment of higher temperature for the greenwave and is calcined, it is cooled to room temperature, obtains the mobile phone backboard based on zirconia ceramics.
Description
Technical field
The present invention relates to field of ceramic preparation more particularly to a kind of mobile phone backboards and its preparation side based on zirconia ceramics
Method.
Background technique
Zirconium oxide is the handset material novel after the latter of plastics, metal, glass.Smart phone will be abandoned existing
The metal back cover to signal shielding, change and using non-metallic material.There are ceramics and two kinds of glass inside non-metallic material
Scheme.The dielectric coefficient of zirconia ceramics back shroud is sapphire 3 times, 10 times of tempered glass, and the penetrability of signal is good.Together
When, ceramics can also adulterate some rare metals, be allowed to than glass more resistant to falling.In addition, ceramics are in the beautiful degree of color, touch sense
Also accomplish better than glass.
Chinese patent (Publication No. CN108975763A) discloses a kind of crystal whisker toughened zirconia ceramics mobile phone of molybdenum silicide
12 parts by weight~18 parts by weight molybdenum silicide whiskers dispersion is added in isopropanol, stirs to get suspension by the preparation method of backboard
Liquid A；100 parts by weight zirconia materials are gradually added in suspending liquid A, suspension B is stirred to get；Suspension B is transferred to
It is dried in vacuo in vacuum oven, obtains powdery molybdenum silicide whisker/zirconium oxide presoma；By powdery molybdenum silicide whisker/zirconium oxide
Presoma is transferred to atmosphere Oven Sintered Technology into the crystal whisker toughened zirconia ceramics powder of molybdenum silicide；To the crystal whisker toughened zirconium oxide pottery of molybdenum silicide
Liquid phenolic resin is added in porcelain powder, is uniformly mixed, is molded into cell phone back board mold, it is hot-forming, obtain the silication
The crystal whisker toughened zirconia ceramics mobile phone backboard of molybdenum.The preparation method of the crystal whisker toughened zirconia ceramics mobile phone backboard of molybdenum silicide of the present invention
Simply, easily operated, be conducive to scale volume production, improve the property and the market competitiveness of product.
However, consumer has higher requirement, hand provided by above-mentioned patent to the smoothness of mobile phone backboard and moist sense
Machine backboard uses the crystal whisker toughened zirconia ceramics of molybdenum silicide, and the zirconia ceramics after toughening is because of its preferable wearability and higher
Hardness, cause subsequent to be polished directly with certain difficulty the preparation-obtained mobile phone backboard of the patent.
In addition, on the one hand since the understanding to those skilled in the art has differences；On the other hand since inventor makes
Lot of documents and patent are had studied when of the invention, but length limits and do not enumerate all details and content in detail, however this is absolutely
Non-present invention does not have the feature of these prior arts, and present invention has been provided with all features of the prior art, Er Qieshen
Ask someone to retain the right for increasing related art in the background technology.
Summary of the invention
For the deficiencies of the prior art, in order to which zirconium oxide to be preferably applied for the manufacture of mobile phone backboard, the present invention is provided
A kind of preparation method of the mobile phone backboard based on zirconia ceramics, the preparation method at least include the following steps: will preparation it is former
Material passes sequentially through Granulation Equipments and ceramic molding equipment, and ceramics by dry flouring technology is respectively adopted and ceramic molding is prepared into
It is calcined to obtain greenwave at a lower temperature to the green compact with certain mechanical strength, then by the green compact, to the pottery
Base, which applies spraying process and places it under the dry environment of higher temperature, to be calcined, and is cooled to room temperature, is obtained described be based on
The mobile phone backboard of zirconia ceramics.
According to a kind of preferred embodiment, the preparation method is further comprising the steps of: to the two of the greenwave obtained after calcining
Side leads to direct current and is sintered, and is gradually increased voltage until phosphere occurs, then keeps the constant certain time of electric current with laggard
Row natural cooling obtains sintering semi-finished product.
According to a kind of preferred embodiment, the pressure of the ceramic molding in the preparation method is 220~250 megapascal,
Dwell time is 30~60 seconds.
According to a kind of preferred embodiment, the calcination temperature calcined in the preparation method to green compact is 800~1200
Degree Celsius, calcination time is 60~120 minutes.
According to a kind of preferred embodiment, the maturing temperature roasted in the preparation method to greenwave is 920~1010
Degree Celsius, calcining time is 35~60 seconds.
According to a kind of preferred embodiment, the increased speed of voltage of direct current is per second 40~100 in the preparation method
Volt.
According to a kind of preferred embodiment, the voltage hold-time for keeping electric current constant in the preparation method is 20~80
Second.
According to a kind of preferred embodiment, the coating that spraying process uses in the preparation method is by C3H8O3、C20H38O11, tree
Glue, pure water and glass powder with low melting point are manufactured by crushing and mixing.
According to a kind of preferred embodiment, the sintering temperature that greenwave is sintered is taken the photograph for 700~900 in the preparation method
Family name's degree, time are 230~300 minutes.
According to a kind of preferred embodiment, the mobile phone backboard based on zirconia ceramics is using such as claim 1 institute
The mobile phone backboard based on zirconia ceramics that the method stated produces, the preparation group of the mobile phone backboard based on zirconia ceramics
Divide and include at least zirconium oxide, titanium dioxide, yttrium oxide and aluminium oxide, wherein the ratio between parts by weight of above-mentioned preparation component are (21
~83): (3~18): (4~17): (10~60).
Mobile phone backboard provided by the invention based on zirconia ceramics and preparation method thereof at least has following Advantageous
Effect:
Mobile phone backboard and preparation method thereof provided by the invention based on zirconia ceramics, is successively led to by that will prepare raw material
Granulation Equipments and ceramic molding equipment are crossed, ceramics by dry flouring technology is respectively adopted and ceramic molding is prepared with one
Determine the green compact of mechanical strength, then the green compact are calcined to obtain greenwave at a lower temperature, the greenwave is applied and is sprayed
It applies technique and places it under the dry environment of higher temperature and calcined, is cooled to room temperature, obtain described making pottery based on zirconium oxide
The mobile phone backboard of porcelain.Preparation method does not need to can be obtained by gloss and all good mobile phone backboard of feel by complicated technology,
To save cost.
Specific embodiment
Embodiment 1
A kind of preparation method of the mobile phone backboard based on zirconia ceramics the following steps are included:
(1) zirconia ceramics amyloplastid is dry-pressing formed obtains green compact, ingredient include zirconium oxide, titanium dioxide, yttrium oxide and
Aluminium oxide, wherein the ratio between four amount of substance is 83:3:4:10, and dry-pressing formed pressure is 220~250 megapascal, when pressure maintaining
Between be 30~60 seconds；
(2) step (1) resulting green compact are calcined, calcination temperature is 800 degrees Celsius, 120 minutes is kept the temperature, with laggard
Row natural cooling, obtains greenwave；
(3) by equipped with program control system automated machine tool according to the processing program finished in advance to step (2) institute
The greenwave obtained is processed；
(4) step (3) resulting greenwave is roasted, temperature is 960 degrees Celsius, and soaking time is 1 minute, with laggard
Row natural cooling obtains the first mobile phone backboard semi-finished product；
(5) lead to direct current to the resulting first mobile phone backboard semi-finished product two sides of step (4) to be sintered, be gradually increased voltage
Until phosphere occurs, it is 40 volts per second that voltage, which is increased speed, and at this time that electric current is constant in 950 peaces, the duration is 20 seconds,
Natural cooling is then carried out, the second mobile phone backboard semi-finished product are obtained；
(6) sprayed coating is carried out to the resulting second mobile phone backboard semi-finished product of step (5), obtain third mobile phone backboard half at
Product, the preparation method of coating are as follows: C3H8O3、C20H38O11, natural gum mixed in the way of weight ratio 1: 2: 3, mixture X is obtained, by institute
It states mixture X and pure water is added in ball mill ball milling 40 minutes, the weight ratio of mixture X and pure water is 1: 2, then by low temperature
Glass powder and pure water are added ball mill ball milling 12 hours, and wherein mixture X and the weight ratio of cryogenic glass powder are 1: 10, mixture
The weight of X and cryogenic glass powder and with the weight of pure water twice and the ratio between be 10: 90；
(7) 120 minutes are kept the temperature under 250 degrees Celsius to the resulting third cell phone back boards half-finished product of step (6) to be dried,
Obtain the 4th cell phone back boards half-finished product；
(8) the resulting 4th cell phone back boards half-finished product of step (7) is sintered 300 minutes at 700 degrees Celsius, natural cooling obtains
To the cell phone back board finished product based on zirconia ceramics.
Embodiment 2
(1) zirconia ceramics amyloplastid is dry-pressing formed obtains green compact, ingredient include zirconium oxide, titanium dioxide, yttrium oxide and
Aluminium oxide, wherein the ratio between four amount of substance is 49:5:6:40, and dry-pressing formed pressure is 220~250 megapascal, when pressure maintaining
Between be 30~60 seconds；
(2) step (1) resulting green compact are calcined, calcination temperature is 1200 degrees Celsius, 60 minutes is kept the temperature, with laggard
Row natural cooling, obtains greenwave；
(3) by equipped with program control system automated machine tool according to the processing program finished in advance to step (2) institute
The greenwave obtained is processed；
(4) step (3) resulting greenwave is roasted, temperature is 1010 degrees Celsius, and soaking time is 1 minute, then
Natural cooling is carried out, the first mobile phone backboard semi-finished product are obtained；
(5) lead to direct current to the resulting first mobile phone backboard semi-finished product two sides of step (4) to be sintered, be gradually increased voltage
Until phosphere occurs, it is 60 volts per second that voltage, which is increased speed, and at this time that electric current is constant in 980 peaces, the duration is 35 seconds,
Natural cooling is then carried out, the second mobile phone backboard semi-finished product are obtained；
(6) sprayed coating is carried out to the resulting second mobile phone backboard semi-finished product of step (5), obtain third mobile phone backboard half at
Product, the preparation method of coating are as follows: C3H8O3、C20H38O11, natural gum mixed in the way of weight ratio 2: 2: 1, mixture X is obtained, by institute
It states mixture X and pure water is added in ball mill ball milling 30 minutes, the weight ratio of mixture X and pure water is 1: 5, then by low temperature
Glass powder and pure water are added ball mill ball milling 20 hours, and wherein mixture X and the weight ratio of cryogenic glass powder are 1: 10, mixture
The weight of X and cryogenic glass powder and with the weight of pure water twice and the ratio between be 1: 3；
(7) 90 minutes are kept the temperature under 270 degrees Celsius to the resulting third cell phone back boards half-finished product of step (6) to be dried,
Obtain the 4th cell phone back boards half-finished product；
(8) the resulting 4th cell phone back boards half-finished product of step (7) is sintered 240 minutes at 900 degrees Celsius, natural cooling obtains
To the cell phone back board finished product based on zirconia ceramics.
Embodiment 3
(1) zirconia ceramics amyloplastid is dry-pressing formed obtains green compact, ingredient include zirconium oxide, titanium dioxide, yttrium oxide and
Aluminium oxide, wherein the ratio between four amount of substance is 55:7:8:30, and dry-pressing formed pressure is 220~250 megapascal, when pressure maintaining
Between be 30~60 seconds；
(2) step (1) resulting green compact are calcined, calcination temperature is 880 degrees Celsius, 120 minutes is kept the temperature, with laggard
Row natural cooling, obtains greenwave；
(3) by equipped with program control system automated machine tool according to the processing program finished in advance to step (2) institute
The greenwave obtained is processed；
(4) step (3) resulting greenwave is roasted, temperature is 920 degrees Celsius, and soaking time is 35 seconds, with laggard
Row natural cooling obtains the first mobile phone backboard semi-finished product；
(5) lead to direct current to the resulting first mobile phone backboard semi-finished product two sides of step (4) to be sintered, be gradually increased voltage
Until phosphere occurs, it is 100 volts per second that voltage, which is increased speed, at this time that electric current is constant in 870 peaces, duration 70
Second, natural cooling is then carried out, the second mobile phone backboard semi-finished product are obtained；
(6) sprayed coating is carried out to the resulting second mobile phone backboard semi-finished product of step (5), obtain third mobile phone backboard half at
Product, the preparation method of coating are as follows: C3H8O3、C20H38O11, natural gum mixed in the way of weight ratio 1: 2: 1, mixture X is obtained, by institute
It states mixture X and pure water is added in ball mill ball milling 40 minutes, the weight ratio of mixture X and pure water is 1: 3, then by low temperature
Glass powder and pure water are added ball mill ball milling 24 hours, and wherein mixture X and the weight ratio of cryogenic glass powder are 1: 20, mixture
The weight of X and cryogenic glass powder and with the weight of pure water twice and the ratio between be 1: 6；
(7) 130 minutes are kept the temperature under 220 degrees Celsius to the resulting third cell phone back boards half-finished product of step (6) to be dried,
Obtain the 4th cell phone back boards half-finished product；
(8) the resulting 4th cell phone back boards half-finished product of step (7) is sintered 300 minutes at 800 degrees Celsius, natural cooling obtains
To the cell phone back board finished product based on zirconia ceramics.
Embodiment 4
(1) zirconia ceramics amyloplastid is dry-pressing formed obtains green compact, ingredient include zirconium oxide, titanium dioxide, yttrium oxide and
Aluminium oxide, wherein the ratio between four amount of substance is 45:18:17:20, and dry-pressing formed pressure is 220~250 megapascal, pressure maintaining
Time is 30~60 seconds；
(2) step (1) resulting green compact are calcined, calcination temperature is 930 degrees Celsius, 80 minutes is kept the temperature, with laggard
Row natural cooling, obtains greenwave；
(3) by equipped with program control system automated machine tool according to the processing program finished in advance to step (2) institute
The greenwave obtained is processed；
(4) step (3) resulting greenwave is roasted, temperature is 980 degrees Celsius, and soaking time is 35 seconds, with laggard
Row natural cooling obtains the first mobile phone backboard semi-finished product；
(5) lead to direct current to the resulting first mobile phone backboard semi-finished product two sides of step (4) to be sintered, be gradually increased voltage
Until phosphere occurs, it is 80 volts per second that voltage, which is increased speed, and at this time that electric current is constant in 910 peaces, the duration is 45 seconds,
Natural cooling is then carried out, the second mobile phone backboard semi-finished product are obtained；
(6) sprayed coating is carried out to the resulting second mobile phone backboard semi-finished product of step (5), obtain third mobile phone backboard half at
Product, the preparation method of coating are as follows: glycerol, methylcellulose, Arabic gum mix in the way of weight ratio 4: 3: 4, obtain mixture
The mixture X and pure water are added in ball mill ball milling 50 minutes X, and the weight ratio of mixture X and pure water is 1: 4, then
Cryogenic glass powder and pure water are added ball mill ball milling 26 hours, wherein mixture X and the weight ratio of cryogenic glass powder are 1: 25,
The weight of mixture X and cryogenic glass powder and with the weight of pure water twice and the ratio between be 1: 5；
(7) 120 minutes are kept the temperature under 230 degrees Celsius to the resulting third cell phone back boards half-finished product of step (6) to be dried,
Obtain the 4th cell phone back boards half-finished product；
(8) the resulting 4th cell phone back boards half-finished product of step (7) is sintered 270 minutes at 850 degrees Celsius, natural cooling obtains
To the cell phone back board finished product based on zirconia ceramics.
Embodiment 5
(1) zirconia ceramics amyloplastid is dry-pressing formed obtains green compact, ingredient include zirconium oxide, titanium dioxide, yttrium oxide and
Aluminium oxide, wherein the ratio between four amount of substance is 21:9:10:60, and dry-pressing formed pressure is 220~250 megapascal, pressure maintaining
Time is 30~60 seconds；
(2) step (1) resulting green compact are calcined, calcination temperature is 990 degrees Celsius, 80 minutes is kept the temperature, with laggard
Row natural cooling, obtains greenwave；
(3) by equipped with program control system automated machine tool according to the processing program finished in advance to step (2) institute
The greenwave obtained is processed；
(4) step (3) resulting greenwave is roasted, temperature is 970 degrees Celsius, and soaking time is 60 seconds, with laggard
Row natural cooling obtains the first mobile phone backboard semi-finished product；
(5) lead to direct current to the resulting first mobile phone backboard semi-finished product two sides of step (4) to be sintered, be gradually increased voltage
Until phosphere occurs, it is 80 volts per second that voltage, which is increased speed, and at this time that electric current is constant in 850 peaces, the duration is 80 seconds,
Natural cooling is then carried out, the second mobile phone backboard semi-finished product are obtained；
(6) sprayed coating is carried out to the resulting second mobile phone backboard semi-finished product of step (5), obtain third mobile phone backboard half at
Product, the preparation method of coating are as follows: C3H8O3、C20H38O11, natural gum mixed in the way of weight ratio 2: 2: 3, mixture X is obtained, by institute
It states mixture X and pure water is added in ball mill ball milling 50 minutes, the weight ratio of mixture X and pure water is 1: 3, then by low temperature
Glass powder and pure water are added ball mill ball milling 34 hours, and wherein mixture X and the weight ratio of cryogenic glass powder are 1: 30, mixture
The weight of X and cryogenic glass powder and with the weight of pure water twice and the ratio between be 1: 4；
(7) 120 minutes are kept the temperature under 240 degrees Celsius to the resulting third cell phone back boards half-finished product of step (6) to be dried,
Obtain the 4th cell phone back boards half-finished product；
(8) the resulting 4th cell phone back boards half-finished product of step (7) is sintered 260 minutes at 880 degrees Celsius, natural cooling obtains
To the cell phone back board finished product based on zirconia ceramics.
Embodiment 6
(1) zirconia ceramics amyloplastid is dry-pressing formed obtains green compact, ingredient include zirconium oxide, titanium dioxide, yttrium oxide and
Aluminium oxide, wherein the ratio between four amount of substance is 25:10:15:50, and dry-pressing formed pressure is 220~250 megapascal, pressure maintaining
Time is 30~60 seconds；
(2) step (1) resulting green compact are calcined, calcination temperature is 1550 degrees Celsius, 70 minutes is kept the temperature, with laggard
Row natural cooling, obtains greenwave；
(3) by equipped with program control system automated machine tool according to the processing program finished in advance to step (2) institute
The greenwave obtained is processed；
(4) step (3) resulting greenwave is roasted, temperature is 980 degrees Celsius, and soaking time is 60 seconds, with laggard
Row natural cooling obtains the first mobile phone backboard semi-finished product；
(5) lead to direct current to the resulting first mobile phone backboard semi-finished product two sides of step (4) to be sintered, be gradually increased voltage
Until phosphere occurs, it is 60 volts per second that voltage, which is increased speed, and at this time that electric current is constant in 830 peaces, the duration is 90 seconds,
Natural cooling is then carried out, the second mobile phone backboard semi-finished product are obtained；
(6) sprayed coating is carried out to the resulting second mobile phone backboard semi-finished product of step (5), obtain third mobile phone backboard half at
Product, the preparation method of coating are as follows: C3H8O3、C20H38O11, natural gum mixed in the way of weight ratio 2: 1: 1, mixture X is obtained, by institute
It states mixture X and pure water is added in ball mill ball milling 65 minutes, the weight ratio of mixture X and pure water is 1: 2, then by low temperature
Glass powder and pure water are added ball mill ball milling 40 hours, and wherein mixture X and the weight ratio of cryogenic glass powder are 1: 35, mixture
The weight of X and cryogenic glass powder and with the weight of pure water twice and the ratio between be 1: 9；
(7) 100 minutes are kept the temperature under 250 degrees Celsius to the resulting third cell phone back boards half-finished product of step (6) to be dried,
Obtain the 4th cell phone back boards half-finished product；
(8) the resulting 4th cell phone back boards half-finished product of step (7) is sintered 230 minutes at 900 degrees Celsius, natural cooling obtains
To the cell phone back board finished product based on zirconia ceramics.
It should be noted that above-mentioned specific embodiment is exemplary, those skilled in the art can disclose in the present invention
Various solutions are found out under the inspiration of content, and these solutions also belong to disclosure of the invention range and fall into this hair
Within bright protection scope.It will be understood by those skilled in the art that description of the invention is not constituted to right to be illustrative
It is required that limitation.Protection scope of the present invention is defined by the claims and their equivalents.
Claims (10)
1. a kind of preparation method of the mobile phone backboard based on zirconia ceramics, which is characterized in that the preparation method include at least with
Lower step: raw material will be prepared and pass sequentially through Granulation Equipments and ceramic molding equipment, ceramics by dry flouring technology and pottery is respectively adopted
The green compact with certain mechanical strength are prepared in porcelain moulding process, then the green compact are carried out calcining at a lower temperature
To greenwave, is applied by spraying process and is placed it under the dry environment of higher temperature for the greenwave and is calcined, room is cooled to
Temperature obtains the mobile phone backboard based on zirconia ceramics.
2. the preparation method of the mobile phone backboard according to claim 1 based on zirconia ceramics, which is characterized in that the preparation
Method is further comprising the steps of:
Lead to direct current to the two sides of the greenwave obtained after calcining to be sintered, is gradually increased voltage up to phosphere generation, then
It keeps the constant certain time of electric current then to carry out natural cooling, obtains sintering semi-finished product.
3. the preparation method of the mobile phone backboard according to claim 1 based on zirconia ceramics, which is characterized in that the preparation
The pressure of ceramic molding in method is 220~250 megapascal, and the dwell time is 30~60 seconds.
4. the preparation method of the mobile phone backboard according to claim 1 based on zirconia ceramics, which is characterized in that the preparation
The calcination temperature calcined in method to green compact is 800~1200 degrees Celsius, and calcination time is 60~120 minutes.
5. the preparation method of the mobile phone backboard according to claim 1 based on zirconia ceramics, which is characterized in that the preparation
The maturing temperature roasted in method to greenwave is 920~1010 degrees Celsius, and calcining time is 35~60 seconds.
6. the preparation method of the mobile phone backboard according to claim 2 based on zirconia ceramics, which is characterized in that the preparation
The increased speed of the voltage of direct current is 40~100 volts per second in method.
7. the preparation method of the mobile phone backboard according to claim 2 based on zirconia ceramics, which is characterized in that the preparation
The voltage hold-time for keeping electric current constant in method is 20~80 seconds.
8. the preparation method of the mobile phone backboard according to claim 1 based on zirconia ceramics, which is characterized in that the preparation
The coating that spraying process uses in method is by C3H8O3、C20H38O11, natural gum, pure water and glass powder with low melting point be by crushing and mixing
And it is manufactured.
9. the preparation method of the mobile phone backboard according to claim 2 based on zirconia ceramics, which is characterized in that the preparation
It is 700~900 degrees Celsius to the sintering temperature that greenwave is sintered in method, the time is 230~300 minutes.
10. a kind of mobile phone backboard based on zirconia ceramics, which is characterized in that the mobile phone backboard based on zirconia ceramics is
The mobile phone backboard based on zirconia ceramics produced using the method as described in claim 1, it is described to be based on zirconia ceramics
Mobile phone backboard preparation component include at least zirconium oxide, titanium dioxide, yttrium oxide and aluminium oxide, wherein above-mentioned preparation component
The ratio between parts by weight be (21~83): (3~18): (4~17): (10~60).
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| US7327044B2 (en) * | 2005-01-21 | 2008-02-05 | Fox Electronics | Integrated circuit package encapsulating a hermetically sealed device |
| KR101978956B1 (en) * | 2012-07-27 | 2019-05-16 | 엘지전자 주식회사 | Mobile terminal |
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