CN108640530A - Cover sheet and its preparation method and application - Google Patents
Cover sheet and its preparation method and application Download PDFInfo
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- CN108640530A CN108640530A CN201810866229.1A CN201810866229A CN108640530A CN 108640530 A CN108640530 A CN 108640530A CN 201810866229 A CN201810866229 A CN 201810866229A CN 108640530 A CN108640530 A CN 108640530A
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- cover sheet
- cover
- toughened glass
- sintering
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/22—Surface treatment of glass, not in the form of fibres or filaments, by coating with other inorganic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C21/00—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface
- C03C21/001—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions
- C03C21/002—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions to perform ion-exchange between alkali ions
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
- G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0266—Details of the structure or mounting of specific components for a display module assembly
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/0279—Improving the user comfort or ergonomics
- H04M1/0283—Improving the user comfort or ergonomics for providing a decorative aspect, e.g. customization of casings, exchangeable faceplate
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/18—Telephone sets specially adapted for use in ships, mines, or other places exposed to adverse environment
- H04M1/185—Improving the rigidity of the casing or resistance to shocks
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2217/00—Coatings on glass
- C03C2217/70—Properties of coatings
- C03C2217/72—Decorative coatings
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2217/00—Coatings on glass
- C03C2217/70—Properties of coatings
- C03C2217/78—Coatings specially designed to be durable, e.g. scratch-resistant
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2218/00—Methods for coating glass
- C03C2218/30—Aspects of methods for coating glass not covered above
- C03C2218/32—After-treatment
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Signal Processing (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Wood Science & Technology (AREA)
- Surface Treatment Of Glass (AREA)
Abstract
The present invention relates to a kind of cover sheets and its preparation method and application, include the following steps：Ceramic ink is coated on cover board substrate, and prebake conditions 5 60 minutes at 100 400 DEG C, then uses rapid thermal processing technique to be warming up to 500 700 DEG C of sintering with 100 450 DEG C/s rates and be no more than 20 seconds, cover sheet is made；Or by ceramic ink after above-mentioned coating and prebake conditions, then at 0.1 10W/cm2Laser energy density under carry out laser sintered, laser sintered sweep speed be 500 10000mm/s.This method greatly shortens the sintering time of ceramic ink; the cover boards such as chemically toughened glass substrate before sintering after performance be substantially unaffected; the problem of avoiding conventional sintering condition destructible chemically toughened glass surface stress; the thin glass base cover sheet of the high thickness of intensity can be not only made in the preparation method, could be applicable to other substrates such as sapphire.
Description
Technical field
The present invention relates to electronic technology fields, more particularly to a kind of cover sheet and its preparation method and application.
Background technology
Cover sheet is widely used on electronic product surface at present.Cover sheet can be divided into glass cover according to substrate material
Plate, ceramic cover plate, sapphire cover board, metal back cover plate etc..Wherein, the glass surface of glass cover-plate easily scratches, and in glass table
It is higher that hard films cost is plated on face, therefore glass cover-plate is limited for outer surface decoration, it is more within based on incrustation.Glass cover
Plate is divided into non-tempered glass and tempered glass.Tempered glass is a kind of prestressed glass because its intensity is using more, according to tempering
Formation basic theory is different, is generally divided into physical toughened glass and chemically toughened glass.It is physical toughened larger (general generally directed to thickness
More than 3mm) glass and carried out at a temperature of 500 DEG C -700 DEG C close to glass softening point, toughening process is generally in steel
Change in stove.Chemical tempering is applicable to the thin glass of thickness and is usually lower in the chemical reagent less than 500 DEG C carry out.
With the development of glass cover-plate, need to assign the more decorative effects of glass cover-plate, such as ceramic glaze effect.At present
If you need to form ceramic glaze effect, need on glass cover-plate coating ceramic ink and through sintering formed.And general ceramic ink needs
Be sintered 15 minutes in 600 DEG C or so of sintering temperatures or more, it can just obtain the bright muffle painting characteristic of high-hardness high-light.And the sintered bar
Part will destroy the surface stress of chemically toughened glass, make original chemical tempering stress relieved.So ceramic ink is on glass
Using mostly based on non-tempered glass and physical toughened glass, there is presently no can be in chemically toughened glass under the premise of holding stress
Upper formation ceramic glaze decoration.It is limited to that the bad and physical toughened glass cover-plate thickness of non-tempered glass cover plate intensity is thicker to ask
Topic, therefore the glass cover-plate with ceramic glaze decorative effect has not been entered into the consumer electronics such as mobile phone, tablet computer factory conduct
Industry.
Invention content
Based on this, it is necessary to provide a kind of cover sheet suitable for chemically toughened glass with ceramic glaze decorative layer and
Preparation method and application.
A kind of preparation method of cover sheet, includes the following steps：
Ceramic ink is coated on cover board substrate, and prebake conditions 5-60 minutes at 100 DEG C -400 DEG C, then using quick
Heat treatment technics is warming up to 500 DEG C of -700 DEG C of sintering with the heating rate of 100-450 DEG C/s and is no more than 20 seconds, and the protection is made
Cover board；
Or ceramic ink is coated on cover board substrate, and prebake conditions 5-60 minutes at 100 DEG C -400 DEG C, then using sharp
Light sintering technology, in 0.01W/cm2-10W/cm2Laser energy density under carry out laser sintered, laser sintered sweep speed
For 1000-10000mm/s, the cover sheet is made.
The cover board substrate is chemically toughened glass, sapphire substrate or physical toughened glass in one of the embodiments,
Glass.
The condition of the prebake conditions is to be handled 30 ± 20 minutes in 150 DEG C ± 50 DEG C in one of the embodiments,.
The coating thickness of the ceramic ink is no more than 300 μm in one of the embodiments,.
The coating thickness of the ceramic ink is 1 μm -30 μm in one of the embodiments,.
The mode of heating of the rapid thermal processing technique is in one of the embodiments,：Using halogen lamp or infrared heat
Radiant heating.
Use the sintering condition of rapid thermal processing technique in 550 DEG C of -650 DEG C of sintering 3 in one of the embodiments,
- 10 seconds seconds.
The laser sintered condition is in one of the embodiments,：Laser energy density is 1W/cm2-5W/cm2, institute
It is 5000-6000mm/s to state laser sintered sweep speed.
A kind of cover sheet is made using above-mentioned preparation method.
A kind of application of above-mentioned cover sheet in preparing electronic product.Wherein electronic product include mobile phone, tablet and
The products such as computer.
The present inventor chances on, and rapid treating technology or laser sintering technology, knot are introduced in cover sheet preparation process
Pre-firing processes are closed, and control rapid treating technology or laser sintered technological parameter, are substantially shorter the sintering of ceramic ink
Time, the cover boards such as chemically toughened glass substrate before sintering after performance be substantially unaffected, and then avoid traditional sintering
The problem of surface stress of condition destructible chemically toughened glass, improves the applicability of preparation method, and for ceramic glaze
The cover sheet of decorative layer provides a kind of new preparation method.The preparation method may be not only suitable for the cover board of chemically toughened glass
Substrate could be applicable to sapphire substrate, or even be applicable to physical toughened glass.
The preparation method can form ceramic glaze especially suitable for chemically toughened glass, this method on chemically toughened glass,
Chemically toughened glass can guarantee the intensity needed for cover sheet as cover board substrate, and reduce protection compared to physical toughened glass
The thickness of cover board, and then the glass cover-plate with ceramic glaze decorative layer that intensity is high, thickness is thin is made.It in addition the study found that should
Cover sheet based on chemically toughened glass made from preparation method, the case hardness of ceramic glaze decorative layer is very excellent, into
And improve the original case hardness of glass substrate and scratch resistance capability.Specifically, such as the nano hardness of former chemically toughened glass
2-7Gpa, after forming ceramic glaze decorative layer by the above method, muffle painting is sintered rear surface nano hardness up to 8-15GPa.
Description of the drawings
Fig. 1 is that the structure of preparation method of the present invention cover sheet one specific example obtained with ceramic glaze decorative layer is shown
It is intended to；
Fig. 2 is the structure of preparation method of the present invention cover sheet another specific example obtained with ceramic glaze decorative layer
Schematic diagram.
Specific implementation mode
To facilitate the understanding of the present invention, below will to invention is more fully described, and give the present invention compared with
Good embodiment.But the present invention can realize in many different forms, however it is not limited to embodiment described herein.Phase
Instead, purpose of providing these embodiments is makes the disclosure of the present invention more thorough and comprehensive.
Unless otherwise defined, all of technologies and scientific terms used here by the article and belong to the technical field of the present invention
The normally understood meaning of technical staff is identical.Used term is intended merely to description tool in the description of the invention herein
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein "and/or" includes one or more phases
Any and all combinations of the Listed Items of pass.
An embodiment of the present invention provides a kind of preparation methods of cover sheet, include the following steps S1~S2.
Step S1：Ceramic ink is coated on cover board substrate, and prebake conditions 5-60 minutes at 100 DEG C -400 DEG C.
Its cover plate substrate is including chemically toughened glass and sapphire substrate, however, not limited to this, or physics
Tempered glass etc..It is understood that ceramic ink can be coated on cover board substrate a surface or two surfaces, in cover board substrate
A surface or two surfaces form ceramic glaze decorative layers.
In a specific example, cover board substrate is chemically toughened glass.Chemically toughened glass can directly be bought or using such as
Lower section method is made：The chemical tempering that original sheet glass is carried out 1-6 hours in 400 DEG C -480 DEG C of potassium nitrate melt is handled, i.e.,
.
Prebake conditions are first carried out at a lower temperature by step S1, the volatile substances such as solvent in ceramic ink volatilize,
Ceramic ink semi-solid preparation is conducive to the subsequent processing of step S2.Optionally, the condition of prebake conditions is in 150 DEG C of ± 50 DEG C of processing
30 ± 20 minutes.Preferably, the condition of prebake conditions is to be handled 30 minutes in 150 DEG C.
In order to further ensure the intensity of the ceramic glaze layer of formation, the coating thickness of ceramic ink should not be too thick, too thick to incite somebody to action
It is unfavorable for prebake conditions and sintering processes, and then influences the intensity of ceramic glaze layer, therefore preferably more than 300 μm.Further, it makes pottery
The coating thickness of porcelain ink is 1 μm -30 μm, to obtain the bright muffle painting characteristic of high-hardness high-light.It is understood that ceramic ink can be used
Silk-screen, spraying, bat printing, be stained with painting the methods of coating.It is understood that this method is applicable to current ceramic ink, current ceramics
Ink has a variety of colors, also referred to as muffle painting ink.
Step S2：Rapid thermal processing technique is used to be warming up to 500 DEG C of -700 DEG C of burnings with the heating rate of 100-450 DEG C/s again
Knot is no more than 20 seconds, and the cover sheet with ceramic glaze decorative layer is made.
Wherein, ceramic ink forms ceramic glaze decorative layer after step S2 sintering.
Wherein, rapid thermal treatment, that is, rapid thermal processing, abbreviation RTP.Rapid thermal treatment is a kind of liter
The heat treatment mode that warm speed is very fast, soaking time is very short, ranging from 100-450 DEG C/s of general heating rate.Generally adopt
With the mode of heatings such as halogen lamp or infrared emanation or resistor rod, electric current and power are very big when heating.For at present, fast speed heat
Processing is one of technique in semiconductor manufacturing, can be used for the impurity after ion implanting quickly activate, rapid thermal oxidation etc.,
Other field is using less.The method can largely save heat treatment time and reduce production cost, be the primary leather in heat treatment
Newly.The rapid thermal process apparatus that laboratory uses is generally special RTP stoves.
Preferably, the sintering condition of rapid thermal processing technique is used to be sintered -10 seconds 3 seconds in 550 DEG C -650 DEG C.It is preferred that
Ground uses rapid thermal processing technique to be warming up to the heating rate of 500 DEG C -700 DEG C of sintering temperature as 100-450 DEG C/s.It is preferred that
Heating rate is 150-250 DEG C/s.
In another embodiment, laser sintering technology replacement can be used in the rapid thermal processing technique in step S2, can reach
Same effect, greatly shortens the sintering time of ceramic ink, the cover boards such as chemically toughened glass substrate before sintering after performance
It is substantially unaffected.Specifically, laser sintered condition is：In 0.01W/cm2-10W/cm2Laser energy density under swashed
Light is sintered, and laser sintered sweep speed is 1000-10000mm/s, and the cover sheet with ceramic glaze decorative layer is made.
Laser sintered condition is preferably：Laser energy density is 1W/cm2-5W/cm2, laser sintered sweep speed is
5000-6000mm/s.It is highly preferred that laser sintered condition is preferably：Laser energy density is 2W/cm2, laser sintered sweeps
It is 6000mm/s to retouch speed.
The present inventor chances on, and rapid treating technology or laser sintering technology, knot are introduced in cover sheet preparation process
Pre-firing processes are closed, and control rapid treating technology or laser sintered technological parameter, are substantially shorter the sintering of ceramic ink
Time, the cover boards such as chemically toughened glass substrate before sintering after performance be substantially unaffected, and then avoid traditional sintering
The problem of surface stress of condition destructible chemically toughened glass, improves the applicability of preparation method, and for ceramic glaze
The cover sheet of decorative layer provides a kind of new preparation method.
The preparation method may be not only suitable for the cover board substrate of chemically toughened glass, could be applicable to sapphire substrate, very
To being applicable to physical toughened glass.
The preparation method can form ceramic glaze especially suitable for chemically toughened glass, this method on chemically toughened glass,
Chemically toughened glass can guarantee the intensity needed for cover sheet as cover board substrate, and reduce protection compared to physical toughened glass
The thickness of cover board, and then the glass cover-plate with ceramic glaze decorative layer that intensity is high, thickness is thin is made.It in addition the study found that should
Cover sheet based on chemically toughened glass made from preparation method, the case hardness of ceramic glaze decorative layer is very excellent, into
And improve the original case hardness of glass substrate and scratch resistance capability.Specifically, such as the nano hardness of former chemically toughened glass
2-7Gpa, after forming ceramic glaze decorative layer by the above method, muffle painting is sintered rear surface nano hardness up to 8-15GPa.
Therefore the present invention also provides a kind of protection caps using with ceramic glaze decorative layer made from above-mentioned preparation method
Plate.Above-mentioned cover sheet can be used for preparing electronic product, and such as cover sheet is set on mobile phone screen and hand set machine shell.
Referring to Fig. 1, should have the cover sheet 10 of ceramic glaze decorative layer including cover board substrate 11 and be formed in cover board base
Ceramic glaze decorative layer 12 on plate 11.In particular, provide a kind of cover sheet 10 based on chemically toughened glass, the protection cap
Plate 10 includes being formed with ceramic glaze decorative layer 12 thereon using chemically toughened glass as cover board substrate 11, the high, thickness with intensity
Thin and high glossiness muffle painting characteristic.
It is understood that the structure of above-mentioned cover sheet 110 is without being limited thereto, such as it may also include anti-fingerprint layer 13.It is specific one
In example, a surface of cover board substrate 11 is formed with above-mentioned ceramic glaze decorative layer 12, and the processing of ceramic glaze decoration is not made on another surface.
Anti-fingerprint layer 13 can be set to surface of the ceramic glaze decorative layer 12 far from cover board substrate 11.At this point, cover board substrate 11 is not provided with ceramics
The surface of glaze decorative layer 12 is used to contact with 20 surface of product to be protected is needed, such as mobile phone screen or hand set machine shell.
Referring to Fig. 2, in the cover sheet 30 with ceramic glaze decorative layer of another specific example, anti-fingerprint layer 33 can
The surface of ceramic glaze decorative layer 32, the i.e. surface far from ceramic glaze decorative layer 32 are not provided with set on cover board substrate 31.At this point, ceramic
Surface of the glaze decorative layer 32 far from cover board substrate 31 is used to contact with 20 surface of product to be protected is needed, such as mobile phone screen or hand
Machine casing.
It is specific embodiment below.
Embodiment 1
The preparation method of cover sheet with ceramic glaze decorative layer, its step are as follows：
(1) with healthy and free from worry gorilla glass original piece (white glass；Thickness 0.05-3mm), through sawing sheet, CNC, (cover board shape adds successively
Work) and polishing treatment.
(2) it after the original sheet glass cleaning machined to shape, puts into 400-480 DEG C of potassium nitrate melt and carries out 1-
6 hours chemical temperings.Cooling is carried out to glass after the completion, is cleaned, chemically toughened glass is obtained.Chemically toughened glass is tested at this time
Surface stress mean value be 775MPa, the nano-hardness improvement of chemically toughened glass is 6GPa.
(3) using chemically toughened glass as cover board substrate, using screen printing method blue, red, green, white and black five kinds of different colours
Pure color muffle painting ink (i.e. ceramic ink) be printed on a surface of glass after chemical tempering, another surface is not processed.Muffle painting
The print thickness of ink is 30 μm, and prebake conditions 30 minutes at 150 DEG C make the volatile matters such as solvent be detached from ink.
(4) by RTP nonstorage calorifiers, 580 DEG C is warming up in 3 seconds to the cover board after prebake conditions and is sintered 5 seconds, glaze is made
Color ink sintering, forms colored ceramic glaze decorative layer, i.e. muffle painting decorative layer on chemically toughened glass surface；Being made has difference
The cover sheet of the ceramic glaze decorative layer of color.
These cover sheets are carried out with the test of surface stress and nano hardness.Specifically, surface stress test is test
The surface stress on the surface of ceramic glaze decorative layer, test method and test equipment is not formed in the chemically toughened glass of cover sheet
For the ORIHARA FSM-6000LE of refractometer photoelastic analysis principle；Nano hardness test is to test the ceramic glaze of cover sheet
The nano hardness (lower abbreviation muffle painting nano hardness) on the surface of decorative layer, test method and test equipment are impression test
Anton Paar nano-indenter test instrument.Test result such as table 1, from 1 data of table it is found that the high temperature pair of the preparation method short time
The stress influence of chemically toughened glass can be ignored, and after formation ceramic glaze decorative layer, chemically toughened glass is in muffle painting side
Nano hardness significantly improve.
Table 1
Embodiment 2
The preparation method of cover sheet with ceramic glaze decorative layer, its step are as follows：
(1) using southern glass/glass original piece (green glass；Thickness 0.05-3mm), successively through sawing sheet, CNC (cover board sharp processing) and
Polishing treatment.
(2) it after the original sheet glass cleaning machined to shape, puts into 400-480 DEG C of potassium nitrate melt and carries out 1-
6 hours chemical temperings.Cooling is carried out to glass after the completion, is cleaned, chemically toughened glass is obtained.Chemically toughened glass is tested at this time
Surface stress mean value be 585MPa.
(3) using chemically toughened glass as cover board substrate, using spraying method blue, red, green, white and black five kinds of different colours
Pure color muffle painting ink (i.e. ceramic ink) be printed on a surface of chemically toughened glass, another surface is not processed.Muffle painting oil
The print thickness of ink is 30 μm, and prebake conditions 30 minutes at 150 DEG C make the volatile matters such as solvent be detached from ink.
(4) by RTP nonstorage calorifiers, 580 DEG C is warming up in 3 seconds to the cover board after prebake conditions and is sintered 5 seconds, glaze is made
Color ink sintering, forms colored ceramic glaze decorative layer, i.e. muffle painting decorative layer on chemically toughened glass surface；Being made has difference
The cover sheet of the ceramic glaze decorative layer of color.
Surface stress test is carried out to these cover sheets, test method is the same as embodiment 1, test result such as table 2.
Table 2
Embodiment 3
Embodiment 3 is substantially the same manner as Example 1, and difference is, the sintering condition of step (4) is quickly to be heated by RTP
Device is warming up to 650 DEG C in 4 seconds to the cover board after prebake conditions and is sintered 4 seconds.
Embodiment 4
Embodiment 4 is substantially the same manner as Example 1, and difference is, the sintering condition of step (4) is quickly to be heated by RTP
Device is warming up to 700 DEG C in 4 seconds to the cover board after prebake conditions and is sintered 3 seconds.
Embodiment 5
Embodiment 5 is substantially the same manner as Example 1, and difference is, the sintering condition of step (4) is quickly to be heated by RTP
Device is warming up to 520 DEG C in 3 seconds to the cover board after prebake conditions and is sintered 20 seconds.
Embodiment 6
Embodiment 6 is substantially the same manner as Example 1, and difference is, prebake conditions 5 minutes at 400 DEG C of step (3).
Embodiment 7
Embodiment 7 is substantially the same manner as Example 1, and difference is, step (4) substitutes Fast Sintering using laser sintering processes
Method, laser sintered condition are：Laser energy density is 2W/cm2Laser sintered, the laser sintered sweep speed of lower carry out
For 6000mm/s, using 4% scanning patter line packed density, defocusing amount 30cm.
Embodiment 8
Embodiment 8 is substantially the same manner as Example 7, and difference is, laser sintered condition is in step (4)：Laser energy
Density is 0.1W/cm2Lower carry out it is laser sintered, laser sintered sweep speed is 1000mm/s, using 4% scanning patter
Line packed density, defocusing amount 30cm.
Comparative example 1
Comparative example 1 is substantially the same manner as Example 1, and difference is, step (4) sintering uses common heating device, heating
Temperature is 580 DEG C, and heating time is 15 minutes.
Comparative example 2
Comparative example 2 is substantially the same manner as Example 1, and difference is, prebake conditions 90 minutes at 400 DEG C of step (3).
Comparative example 3
Comparative example 3 is substantially the same manner as Example 1, and difference is, the sintering time of step (4) is 30 seconds.
Comparative example 4
Comparative example 4 is substantially the same manner as Example 7, and difference is, laser sintered condition is in step (4)：Laser energy
Density is 20W/cm2Lower carry out it is laser sintered.
The cover sheet for embodiment 3-8 and comparative example 1-4 being made blue ceramic glaze decorative layer carries out surface stress test,
Test method is the same as embodiment 1, test data such as table 3.
Table 3
Each technical characteristic of embodiment described above can be combined arbitrarily, to keep description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of preparation method of cover sheet, which is characterized in that include the following steps：
Ceramic ink is coated on cover board substrate, and prebake conditions 5-60 minutes at 100 DEG C -400 DEG C, then using at fast speed heat
Reason technology is warming up to 500 DEG C of -700 DEG C of sintering with the heating rate of 100-450 DEG C/s and is no more than 20 seconds, and the protection cap is made
Plate；
Or ceramic ink is coated on cover board substrate, and prebake conditions 5-60 minutes at 100 DEG C -400 DEG C, then using laser burning
Knot technology, in 0.01W/cm2-10W/cm2Laser energy density under carry out laser sintered, laser sintered sweep speed and be
The cover sheet is made in 500-10000mm/s.
2. preparation method as described in claim 1, which is characterized in that the cover board substrate is chemically toughened glass, sapphire
Substrate or physical toughened glass.
3. preparation method as described in claim 1, which is characterized in that the condition of the prebake conditions is at 150 DEG C ± 50 DEG C
Reason 30 ± 20 minutes.
4. preparation method as described in claim 1, which is characterized in that the coating thickness of the ceramic ink is no more than 300 μm.
5. preparation method as claimed in claim 4, which is characterized in that the coating thickness of the ceramic ink is 1 μm -30 μm.
6. preparation method as described in any one in claim 1-5, which is characterized in that the heating side of the rapid thermal processing technique
Formula is：It is heated using halogen lamp or infrared emanation.
7. preparation method as described in any one in claim 1-5, which is characterized in that use the sintered bar of rapid thermal processing technique
Part is to be sintered -10 seconds 3 seconds in 550 DEG C -650 DEG C.
8. preparation method as described in any one in claim 1-5, which is characterized in that the laser sintered condition is：Laser
Energy density is 1W/cm2-5W/cm2, the laser sintered sweep speed is 5000-6000mm/s.
9. a kind of cover sheet, which is characterized in that be made using such as claim 1-8 any one of them preparation methods.
10. application of the cover sheet as claimed in claim 9 in preparing electronic product.
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| CN201810866229.1A CN108640530B (en) | 2018-08-01 | 2018-08-01 | Protective cover plate and preparation method and application thereof |
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| CN201810866229.1A CN108640530B (en) | 2018-08-01 | 2018-08-01 | Protective cover plate and preparation method and application thereof |
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| CN108640530B CN108640530B (en) | 2021-03-26 |
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| CN109649063A (en) * | 2018-11-07 | 2019-04-19 | 维达力实业(深圳)有限公司 | The production method of electronic product and its cover sheet and cover sheet |
| FR3105212A1 (en) * | 2019-12-20 | 2021-06-25 | Saint-Gobain Glass France | Process for rapid thermal treatment of thin films on tempered glass substrates |
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| Publication number | Publication date |
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| CN108640530B (en) | 2021-03-26 |
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