CN113619209A - Ceramic plastic composite shell, preparation method thereof and electronic equipment - Google Patents

Ceramic plastic composite shell, preparation method thereof and electronic equipment Download PDF

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Publication number
CN113619209A
CN113619209A CN202010384597.XA CN202010384597A CN113619209A CN 113619209 A CN113619209 A CN 113619209A CN 202010384597 A CN202010384597 A CN 202010384597A CN 113619209 A CN113619209 A CN 113619209A
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ceramic
layer
main shell
appearance
plastic
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CN202010384597.XA
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CN113619209B (en
Inventor
杨光明
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Priority to CN202010384597.XA priority Critical patent/CN113619209B/en
Priority to PCT/CN2021/079327 priority patent/WO2021223506A1/en
Publication of CN113619209A publication Critical patent/CN113619209A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/005—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/06—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for producing matt surfaces, e.g. on plastic materials, on glass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/045—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • H04M1/04—Supports for telephone transmitters or receivers
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/402—Coloured
    • B32B2307/4023—Coloured on the layer surface, e.g. ink
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/554—Wear resistance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment

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  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Signal Processing (AREA)
  • Laminated Bodies (AREA)

Abstract

The application provides a ceramic plastic composite shell, a preparation method thereof and electronic equipment, wherein the ceramic plastic composite shell comprises: the ceramic main shell has the full light transmittance of more than or equal to 10 percent; a plastic part; and the bonding decorative layer is provided with an appearance decorative layer, is arranged between the ceramic main shell and the plastic part and is used for bonding the ceramic main shell and the plastic part. In this composite housing, the outward appearance decorative layer can realize richening various, the bright outward appearance effect of color, and the full transmissivity more than or equal to 10% of the main shell of simultaneous control pottery for the user can see through the decorative effect that the outward appearance decorative layer was watched to the main shell of pottery, thereby can greatly richen ceramic housing's outward appearance, extension ceramic housing's range of application.

Description

Ceramic plastic composite shell, preparation method thereof and electronic equipment
Technical Field
The application relates to the technical field of electronic equipment, in particular to a ceramic plastic composite shell, a preparation method thereof and electronic equipment.
Background
Ceramics have high hardness, high strength, and a texture like jade, and have been widely used for mobile phone housings in recent years, but ceramic materials have two problems: firstly, the processing cost is high, secondly, the color matching difficulty is high, and the color and the pattern are not rich enough. The plastic material can obtain a complex structure through injection molding, and has the advantages of high production efficiency, low cost, easy color mixing and rich colors. If the ceramic and the plastic can be combined, the part with simple structure uses the ceramic (such as the plane part of the rear shell of the mobile phone), and the part with complex structure uses the plastic (such as the middle frame part of the mobile phone), thereby greatly enriching the application range of the ceramic shell and reducing the cost of the ceramic shell. The existing ceramic-plastic connection method mainly comprises the following steps: direct connection, buckle structure connection, ceramic T treatment + nano injection molding and glue/bonding layer connection. However, the above methods are mainly used for improving the bonding force between the ceramic and the plastic, and the problems of single appearance and insufficient color of the ceramic shell are not solved.
Therefore, the related processes of the ceramic plastic composite shell still need to be improved.
Content of application
The present application is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, an object of the present application is to provide a ceramic plastic composite housing with colorful and diversified appearance effects.
In one aspect of the present application, a ceramic plastic composite housing is provided. According to an embodiment of the present application, the ceramic plastic composite housing includes: the ceramic main shell has the full light transmittance of more than or equal to 10 percent; a plastic part; and the bonding decorative layer is provided with an appearance decorative layer, is arranged between the ceramic main shell and the plastic part and is used for bonding the ceramic main shell and the plastic part. In this composite housing, the outward appearance decorative layer can realize richening various, the bright outward appearance effect of color, and the full transmissivity more than or equal to 10% of the main shell of simultaneous control pottery for the user can see through the decorative effect that the outward appearance decorative layer was watched to the main shell of pottery, thereby can greatly richen ceramic housing's outward appearance, extension ceramic housing's range of application.
In another aspect of the present application, a method of making the ceramic plastic composite housing described above is provided. According to an embodiment of the application, the method comprises: forming an adhesive decoration layer on at least a part of the surface of the ceramic main shell; and carrying out in-mold injection molding on the ceramic main shell with the bonding decoration layer so as to form a plastic part on the bonding decoration layer. The method has simple steps and easy operation, and the obtained ceramic plastic composite shell has rich and various appearance effects and strong binding force, and can obtain the shell with specific ceramic texture and beautiful appearance effect.
In yet another aspect of the present application, an electronic device is provided. According to an embodiment of the application, the electronic device comprises the ceramic plastic composite shell, wherein the ceramic plastic composite shell defines a containing space; and the display screen is arranged in the accommodating space. The electronic equipment has the advantages of ceramic texture, high strength, good wear resistance, appearance effects of multiple colors and multiple patterns, high attractiveness and good user experience.
Drawings
Fig. 1 is a schematic structural diagram of a ceramic plastic composite housing according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a ceramic plastic composite housing according to another embodiment of the present application.
Fig. 3 is a schematic structural diagram of a ceramic plastic composite housing according to another embodiment of the present application.
Fig. 4 is a schematic structural diagram of a ceramic plastic composite housing according to another embodiment of the present application.
Fig. 5 is a schematic structural diagram of a ceramic plastic composite housing according to another embodiment of the present application.
Fig. 6 is a schematic structural diagram of a ceramic plastic composite housing according to another embodiment of the present application.
Fig. 7 is a schematic structural diagram of a ceramic plastic composite housing according to another embodiment of the present application.
Fig. 8 is a schematic structural diagram of a ceramic plastic composite housing according to another embodiment of the present application.
Fig. 9 is a schematic structural diagram of a ceramic plastic composite housing according to another embodiment of the present application.
Fig. 10 is a schematic structural diagram of a ceramic plastic composite housing according to another embodiment of the present application.
Fig. 11 is a schematic flow chart of a method for manufacturing a ceramic plastic composite housing according to an embodiment of the present application.
Fig. 12 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
Embodiments of the present application are described in detail below. The following description of the embodiments is merely exemplary in nature and is in no way intended to limit the present disclosure. The examples, where specific techniques or conditions are not indicated, are to be construed according to the techniques or conditions described in the literature in the art or according to the product specifications. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products commercially available.
In one aspect of the present application, a ceramic plastic composite housing is provided. According to an embodiment of the present application, referring to fig. 1, the ceramic plastic composite housing includes: a ceramic main shell 10, wherein the total light transmittance of the ceramic main shell 10 is more than or equal to 10%; a plastic part 20; and the bonding decoration layer 30 is provided with an appearance decoration layer, is arranged between the ceramic main shell 10 and the plastic part 20, and is used for bonding the ceramic main shell 10 and the plastic part 20. In this composite housing, the outward appearance decorative layer can realize richening various, the bright outward appearance effect of color, and the full transmissivity more than or equal to 10% of the main shell of simultaneous control pottery for the user can see through the decorative effect that the outward appearance decorative layer was watched to the main shell of pottery, thereby can greatly richen ceramic housing's outward appearance, extension ceramic housing's range of application.
It is understood that the higher the light transmittance of the ceramic main shell is, the better the appearance decoration layer is viewed through the ceramic main shell, specifically, the full light transmittance of the ceramic main shell may be greater than or equal to 30%, specifically, 30% to 60%, more specifically, 30%, 35%, 40%, 45%, 50%, 55%, 60%, and so on. Therefore, the effects of colors, patterns and the like of the appearance decorative layer can be better displayed by penetrating through the ceramic main shell, and the appearance of the composite shell is richer, diversified and gorgeous. Specifically, the linear transmittance of the ceramic main shell may be equal to or greater than 0.5%, specifically 0.5% to 7%, and the like, specifically 0.5%, 1%, 1.5%, 2.0%, 2.5%, 3.0%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, 7%, and the like, and thus the decorative pattern in the appearance decorative layer may be displayed more clearly without the problems of shadows, unclear boundaries, and the like. Further, the linear transmittance of the ceramic main shell may be greater than or equal to 1%, specifically 1% to 7%, specifically 1%, 2%, 3%, 4%, 5%, 6%, 7%, and the like. Therefore, the patterns in the appearance decoration layer are clearer, and the appearance of a user is better.
It should be noted that the term "total transmittance" used herein refers to the percentage of the total light flux transmitted through the ceramic main shell to the incident light flux at 580 nm; and "linear transmittance" means the percentage of the luminous flux that passes through the ceramic main shell without changing the direction thereof to the luminous flux incident thereon at a wavelength of 580 nm. And it can be understood that, in the visible light wavelength range, as the wavelength increases, the full transmittance and the linear transmittance of the ceramic main shell both gradually increase, and in this application, the full transmittance and the linear transmittance corresponding to the wavelength of 580nm are measured, and if the measured wavelength decreases or increases, the corresponding full transmittance and the corresponding linear transmittance also decrease or increase.
It is understood that the ceramic main shell used may be a high light transmission ceramic, and may be a high light transmission zirconia ceramic. In some embodiments, the high optical transparency zirconia ceramic comprises, in mass percent: 5.0 to 8.0% of Y2O30.0 to 0.5% of Al2O30 to 3.0% of HfO2And the balance of ZrO2. In one embodiment, a high optical transparency zirconia ceramic comprises: 5.5% of Y2O30.2% of Al2O32.5% HfO2And the balance of ZrO2. Wherein, Y2O3Is a stabilizer, and can prevent the transformation from tetragonal phase zirconia to monoclinic phase zirconia in the sintering and processing processesIf the content is too low, the stability of the ceramic is not good, the ceramic is easy to crack in the sintering and processing processes, and if the content is too high, the mechanical property of the ceramic is not good; al (Al)2O3The additive is added in a proper amount, which is beneficial to improving the mechanical property of the ceramic, but can reduce the linear light transmittance of the ceramic, if the content is too low, the mechanical property of the ceramic is not beneficial, and if the content is too high, the linear light transmittance of the ceramic can be obviously reduced; HfO2Being a zirconia intergrowth, HfO2And ZrO2The properties of (A) are very close, and the content of the (A) has little influence on the performance of the ceramic.
It is understood that the bonded decorative layer in the present application may have a single layer structure or a multi-layer structure. Specifically, the adhesive decorative layer may include an adhesive layer and an appearance decorative layer. In some embodiments, referring to fig. 2, the appearance decorative layer 31 is located inside the adhesive layer 32; in some embodiments, referring to fig. 3, the appearance decoration layer 31 may be located on a side of the adhesive layer 32 adjacent to the plastic part 20, and a part of the appearance decoration layer 31 is embedded in the adhesive layer 32; in some embodiments, referring to fig. 4, the decorative appearance layer 31 is located on a side of the adhesive layer 32 adjacent to the plastic part 20.
It can be understood that the adhesive layer can connect ceramic main shell and plastic part on the one hand, guarantees joint strength, and on the other hand also can bear the outward appearance decorative layer to give the outward appearance effect of abundant colour and pattern of the compound casing of pottery plastic. Specifically, the adhesive layer may be colored or colorless and transparent. When the appearance effect of the composite shell is required to be a single pure color, the adhesive layer with the color forms the appearance decorative layer, and if the adhesive layer is colorless and transparent, the appropriate appearance decorative layer can be formed subsequently to endow the composite shell with rich appearance effect.
Specifically, the material of the adhesive layer may be a resin material, and specifically may be at least one of a polyurethane resin, an acrylic resin, an epoxy resin, a polyamide resin, and a silicone resin. In some embodiments, the material of the adhesive layer may be a polyurethane resin. Therefore, the bonding strength of the polyurethane resin and the ceramic main shell is high, the polyurethane resin is easier to color, and the obtained color pattern is fuller.
Specifically, the thickness of the adhesive layer may be 5 to 50 μm, such as 5 micrometers, 10 micrometers, 15 micrometers, 20 micrometers, 25 micrometers, 30 micrometers, 35 micrometers, 40 micrometers, 45 micrometers, 50 micrometers, and the like. If the thickness is less than 5 μm, the bonding strength of the adhesive layer with ceramics and plastics is not good, and if the thickness is more than 50 μm, the adhesive layer is highly brittle and easily cracked, and within the above thickness range, the adhesive layer can exhibit bonding strength and mechanical properties superior to those of other thickness ranges.
Specifically, the appearance decorative layer may impart a certain color, texture or pattern to the composite shell, and in some embodiments, the appearance decorative layer may be composed of pigment particles. Specifically, different colors can be realized by selecting pigments with different colors, and different textures or patterns can be formed by adjusting the positions of the pigments, so that the composite shell can be endowed with rich and various appearance effects with bright and full colors, and the aesthetic requirements of users can be better met. In addition, the appearance decoration layer is formed by adopting the pigment particles, and the pigment particles are beneficial to partially or completely penetrate into the bonding layer due to certain gaps among the molecular chains in the bonding layer, so that the bonding strength between the ceramic main shell and the plastic part can be enhanced. In some embodiments, referring to fig. 5, the pigment particles 33 are all impregnated into the bonding layer 30. In other embodiments, referring to FIG. 6, pigment particles 33 partially penetrate into bonding layer 30.
Specifically, the type of pigment that can be used can be flexibly selected according to the actual appearance effect, and in some specific embodiments, the pigment that can be used includes organic pigments, such as phthalocyanine blue, toluidine red, quinacridone violet, benzidine yellow, and the like; inorganic pigments such as iron oxide red, iron oxide black, chrome yellow, chrome green, titanium blue and the like can also be included, and different types of pigments can be selected according to different forming methods of the decorative layer, so that redundant description is omitted.
Specifically, the material of the plastic part may include at least one of polyamide, polyphthalamide, polyaramid, polycarbonate, and polyphenylene sulfide. In some embodiments, the plastic portion comprises a polyamide. Therefore, the bonding force between the polyamide and the adhesive layer is good. Further, the plastic part contains a reinforcing material, and the reinforcing material can comprise glass fiber, wherein the mass percentage of the reinforcing material is less than or equal to 60% based on the total mass of the plastic part. Therefore, the strength of the plastic part is improved, the shrinkage rate of the plastic is reduced (the composite shell is easy to deform due to too large plastic shrinkage rate), and if the content of the glass fiber is too high, the plastic part is high in brittleness and has more surface defects (such as floating fibers).
It can be understood that the plastic part may have a predetermined color or may be colorless and transparent according to the requirement of appearance effect. In some embodiments, the plastic portion may contain a colorant. Therefore, the color can be adjusted by adding the coloring material, and in some specific examples, the color of the plastic part is consistent with that of the ceramic main shell, so that the composite shell has more integral feeling.
It can be understood that the specific connection form of the ceramic main shell and the plastic part can be adjusted according to actual needs. In some embodiments, referring to fig. 7, the ceramic main shell 10 is a plate ceramic, and the plate ceramic has a through hole 11 therein, and the plastic part 20 covers one surface of the plate ceramic 10 and fills the through hole 11. In other embodiments, referring to fig. 8, the ceramic main shell 10 is a flat ceramic, the plastic part 20 includes an arc part 21 and a platform part 22 connected to each other, the arc part 21 and the platform part 22 together define a step structure 23, and at least one side of the flat ceramic 10 is cooperatively disposed in the step structure 23. In other embodiments, referring to fig. 9, the plastic part 20 includes a first planar bottom wall 24 and a first arc-shaped side wall 25 connected to at least one side of the first planar bottom wall, and the first arc-shaped side wall 25 and the first planar bottom wall 24 together define a receiving groove 26 at a side facing away from a bending direction of the first arc-shaped side wall, and the ceramic main shell 10 is filled in the receiving groove 26. In other embodiments, referring to fig. 10, the ceramic main shell 10 includes a second planar bottom wall 12 and a second arc-shaped sidewall 13 connected to at least one side of the second planar bottom wall, and the plastic part 20 covers an inner surface of the ceramic main shell 10. It is to be understood that the different forms of connection described above are illustrative only and are not to be construed as limiting the present application.
Specifically, the thickness of the ceramic main shell is 0.1-0.5 mm, such as 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm and the like. If the thickness of the ceramic main shell is less than 0.1mm, the strength of the ceramic main shell is insufficient, the requirement on mechanical strength is difficult to meet, if the thickness is more than 0.5mm, the linear light transmittance or the full light transmittance is difficult to meet, the color and the pattern in the bonding layer are difficult to clearly penetrate through the ceramic main shell, the color and the pattern are frosted, and in the thickness range, the better mechanical strength can be ensured, and the appearance effect is better.
In another aspect of the present application, a method of making the ceramic plastic composite housing described above is provided. According to an embodiment of the present application, referring to fig. 11, the method includes: forming an adhesive decoration layer on at least a part of the surface of the ceramic main shell; and carrying out in-mold injection molding on the ceramic main shell with the bonding decoration layer so as to form a plastic part on the bonding decoration layer. The method has simple steps and easy operation, and the obtained ceramic plastic composite shell has rich and various appearance effects and strong binding force, and can obtain the shell with specific ceramic texture and beautiful appearance effect.
As mentioned above, the material of the ceramic main shell may be a high light transmission zirconia ceramic, which may be prepared by the following steps: (1) forming: the ceramic raw materials are uniformly mixed, a proper amount of auxiliary agents are added, and a ceramic green body is obtained by adopting forming methods such as dry pressing, tape casting, injection molding, gel film injection and the like. (2) Isostatic pressing: and (3) carrying out isostatic pressing treatment on the formed green body, wherein the specific parameters can be as follows: the pressure is more than or equal to 100MPa, the P is less than or equal to 250MPa, and the temperature is more than 0 ℃ and less than T and less than 100 ℃. The isostatic pressing can effectively reduce the content of pores in the green body, thereby reducing the content of pores in the sintered ceramic, and being beneficial to improving the strength and the linear light transmittance of the ceramic. If the isostatic pressure is lower than 100MPa, the ceramic strength and the linear light transmittance are not facilitated, and if the pressure exceeds 250MPa, the ceramic strength and the linear light transmittance are not obviously improved, but the requirement on the pressure resistance of equipment is sharply improved; the higher the isostatic temperature, the better, but the isostatic pressure usually uses water as medium, and the water freezes below 0 ℃ and boils above 100 ℃ which is not beneficial to operation. (3) Degreasing and sintering: and fully degreasing the green body after isostatic pressing treatment, and then sintering to obtain a ceramic sintered body. The specific degreasing method is not limited, as long as sufficient degreasing is ensured, and the sintering process parameters can be as follows: the temperature is 1400-1500 deg.C (such as 1410 deg.C, 1420 deg.C, 1430 deg.C, 1440 deg.C, 1450 deg.C, 1460 deg.C, 1470 deg.C, 1480 deg.C, 1490 deg.C, 1500 deg.C, etc.), and the temperature is 3-6 h (such as 3h, 4h, 5h, 6h, etc.), in one embodiment, the sintering temperature is 1450 deg.C, and the holding time is 4 h. Within the temperature and time ranges, the grain size of the obtained sintered blank is 600-1000 nm (such as 600nm, 650nm, 700nm, 750nm, 800nm, 850nm, 900nm, 950nm, 1000nm and the like), the tetragonal phase content is more than 98%, and the bending strength is more than 900 MPa. If the sintering temperature is less than 1400 ℃ or the heat preservation is less than 3h, the grain size is less than 600nm, the grains are too fine, the grain boundary is too much, the mechanical strength of the ceramic is favorably improved, but the linear light transmittance of the ceramic is not favorably realized (the grain boundary can cause light scattering); if the temperature is more than 1500 ℃ or the heat preservation is more than 6 hours, the grain size is more than 1000nm, which is beneficial to improving the linear light transmittance of the ceramic, but the grain is too coarse, which is not beneficial to the mechanical performance of the ceramic. (4) CNC and polishing: and (3) processing the sintered ceramic by a CNC (computer numerical control) lathe and polishing to obtain the ceramic main shell. The specific CNC and polishing steps and parameters may be performed with reference to conventional processes and will not be described in detail herein.
Specifically, the adhesive decorative layer may be formed in one step or in multiple steps, and when the adhesive decorative layer is formed of a colored resin layer, it may be formed directly in one step by at least one of spraying, printing, and painting. And if the bonding decoration layer comprises the bonding layer and the appearance decoration layer, the bonding decoration layer can be formed by the following steps: forming an adhesive layer on at least a part of a surface of the ceramic main case by at least one of spraying, printing, and painting; forming an appearance decorative layer on the adhesive layer by at least one of thermal sublimation, padding, thermal transfer printing, spraying, and printing.
Specifically, forming the adhesive layer may include: after the adhesive liquid layer is sprayed, printed and brushed, the ceramic main shell with the adhesive liquid layer is placed in an oven to be cured, wherein the curing temperature can be 50-200 ℃ (such as 50 ℃, 80 ℃, 100 ℃, 120 ℃, 150 ℃, 180 ℃, 200 ℃ and the like), and the curing time can be 30-200 min (such as 30min, 50min, 80min, 100min, 120min, 150min, 180min, 200min and the like).
Specifically, the thermal sublimation is carried out by the following steps: printing a first appearance decorative pattern on a first film sheet by using a printer, heating and baking the first film sheet to be soft, pasting the softened first film sheet on the surface of the bonding layer, and carrying out first heating and first pressurization treatment on the first film sheet to ensure that the appearance decorative pattern is sublimated and permeates into the bonding layer to form the appearance decorative layer. In some embodiments, a printer is used to print a desired color and pattern on a film (at least one of PET (polyethylene terephthalate), PI (polyimide), PVC (polyvinyl chloride), TPU (thermoplastic polyurethane elastomer rubber), and PC (polycarbonate)), and then the film is heated to 120 ℃ or higher to soften the film, and the softened film is attached to the surface of an adhesive layer, and at the same time, under the conditions that the pressure is 0.05MPa or higher and the temperature is 160 ℃ or higher, color particles on the film are sublimated under temperature and pressure and permeate into the adhesive layer, so that the color and the pattern are obtained in the adhesive layer. The method has the advantages of simple color mixing, rich colors and capability of quickly realizing multicolor, gradual change and complex and fine pattern effects.
It should be noted that the terms "first" and "second" are used herein for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
Specifically, the dip dyeing is carried out by the following steps: and immersing the bonding layer into dyeing liquor, so that pigment particles in the dyeing liquor permeate into the bonding layer to form the appearance decorative layer. In some embodiments, the ceramic main shell is partially or completely immersed in a dyeing solution, the ceramic main shell is immersed for 1-30 min at the temperature of 60-95 ℃, and pigment particles in the dyeing solution permeate into the bonding layer, so that coloring is realized. Wherein, the shorter the soaking time, the shallower the coloring, and the longer the soaking time, the deeper the coloring. After dip dyeing, the ceramic main shell can be cleaned by pure water and dried. The method has the advantages of low cost and suitability for mass production, and can realize the effects of multicolor, gradual change and complex patterns by methods such as a pulling method, a mask film (common PET) sticking method and the like.
Specifically, the thermal transfer printing is performed by the following steps: printing a second appearance decorative pattern on a second film, heating and baking the second film to be soft, pasting the softened second film on the surface of the bonding layer, and carrying out second heating and second pressurization treatment on the second film to transfer the second appearance decorative pattern onto the bonding layer to form the appearance decorative layer. In some embodiments, a required pattern is printed on a film (at least one of PET, PI, PVC, TPU and PC), then the film is heated to a temperature of more than or equal to 120 ℃ to bake the film, the softened film is attached to the surface of an adhesive layer, pressure is added, and the pattern on the film is transferred to the adhesive layer under the conditions that the temperature is more than or equal to 140 ℃ and the pressure is more than or equal to 0.05MPa, so that the pattern is obtained on the surface layer of the adhesive layer. The method has the advantages of low cost, simple color mixing, rich colors and capability of quickly realizing multicolor, gradual change and complex pattern effects.
Specifically, the printing is performed by the following steps: preheating the ceramic main shell, then printing a decorative ink pattern on the bonding layer by using an ink-jet printer, and curing the decorative ink pattern to form the appearance decorative layer. In some embodiments, the ceramic main shell is preheated to a temperature of more than or equal to 40 ℃, then an ink-jet printer is used for directly printing a pattern on the bonding layer, and then the ink is heated or UV cured, so that the pattern is obtained on the surface layer of the bonding layer. The method has the advantages of simple color matching and rich colors, and can quickly realize multicolor, gradual change and complex pattern effects.
Specifically, the spraying is carried out by the following steps: preheating the ceramic main shell, spraying decorative ink patterns on the bonding layer by using a paint spray gun, and heating to solidify the ink to form the appearance decorative layer. In some embodiments, the ceramic shell is preheated to a temperature of not less than 60 ℃, then ink is sprayed on the bonding layer by using a paint gun, then the ceramic main shell is heated to a temperature of 80-150 ℃ and kept for 10-60 min, and the ink is solidified, so that the patterns on the surface layer of the bonding layer are formed. The method has the advantages of mature process, simple operation and low cost.
Specifically, after the bonding of the decorative layer is completed, the ceramic main shell is placed in an injection mold for in-mold injection molding, so that the bonding of the plastic part and the bonding layer is realized. Wherein the in-mold injection satisfies at least one of the following conditions:
the mold temperature is 90-120 ℃ (such as 90 ℃, 100 ℃, 110 ℃, 120 ℃ and the like); the material temperature is 280-310 ℃ (such as 280 ℃, 290 ℃, 300 ℃, 310 ℃ and the like); the injection pressure is 100-120 MPa (specifically 100MPa, 105MPa, 110MPa, 115MPa, 120MPa, etc.).
Specifically, if the plastic part is used as an appearance part (i.e., the plastic part can be directly viewed by a user in actual use), the method may further include: and grinding and/or painting the plastic part. Wherein, the defects of flash, burr and the like on the surface of the plastic part can be removed by polishing. The paint can improve the surface gloss and reflectivity of the plastic part, so that the plastic part has the texture similar to ceramics, and the UV resin is generally selected for spraying. If the plastic part is not used as an appearance (i.e. the plastic part is not directly viewed by the user during actual use), the process of grinding and/or painting can be omitted.
In yet another aspect of the present application, an electronic device is provided. According to an embodiment of the application, the electronic device comprises the ceramic plastic composite shell, wherein the ceramic plastic composite shell defines a containing space; and the display screen is arranged in the accommodating space. The electronic equipment has the advantages of ceramic texture, high strength, good wear resistance, appearance effects of multiple colors and multiple patterns, high attractiveness and good user experience.
It is understood that the specific type of the electronic device is not particularly limited, and may be a mobile phone (see fig. 12 for a schematic structural diagram, including the ceramic plastic composite housing 100), a tablet computer, a game machine, electronic paper, a wearable device, a watch, a battery module, a household appliance, and the like. In addition, in addition to the above-described housing, the electronic device may further include structures and components that the conventional electronic device must have, for example, a mobile phone, and may further include a touch screen, a motherboard, a memory, a fingerprint identification module, a camera module, and the like, which are not described in detail herein.
Embodiments of the present application are described in detail below.
Examples
The following table shows the components and process parameters of each layer of the composite shells in examples 1 to 12, and the components and process parameters of each layer of the composite shells in examples 13 to 24 are respectively the same as those in examples 1 to 12 (i.e., example 13 is the same as example 1, example 14 is the same as example 2, and so on), wherein the same pigment is used to form the appearance decorative layer in examples 1 to 12, and the colors of the pigment used to form the appearance decorative layer in examples 13 to 24 are different.
Figure RE-GDA0002562013070000081
Figure RE-GDA0002562013070000091
The steps of forming the composite shell in examples 1-24 are as follows:
a: the ceramic main shell formula (calculated according to mass percent): HfO2 2.5％，Y2O3 5.5％，Al2O30.2%, and ZrO2 91.8％。
b, forming: the components are uniformly mixed, a proper amount of auxiliary agent is added, and a ceramic green body is obtained by forming methods such as dry pressing, tape casting, injection molding, gel film injection and the like.
And c, isostatic pressing: and (3) carrying out isostatic pressing treatment on the formed green body, wherein the parameters are as follows: the pressure is more than or equal to 100 and less than or equal to 250MPa, and the temperature is more than 0 and less than 100 ℃.
And d, degreasing and sintering: and fully degreasing the green body, and then sintering to obtain the ceramic sintered body. The sintering process parameters are as follows: the temperature is 1450 ℃, and the temperature is kept for 4 h.
e, CNC and polishing: the sintered ceramic is subjected to CNC (computerized numerical control) and polishing to obtain a ceramic shell material, the thickness of the material is 0.1-0.5 mm, the linear light transmittance within the wavelength range of 380-780 nm is not less than 0.5%, and the total light transmittance is not less than 30%.
f: applying an adhesive layer: cleaning the polished ceramic material, and then applying an adhesive layer on the inner surface of the polished ceramic material, wherein the application method can be spraying, printing or brushing. And after the adhesive layer is applied, curing in an oven at 50-200 ℃ for 30-200 min. The thickness of the fully cured bonding layer is 5-50 μm.
g: coloring: and after the bonding layer is cured, coloring the bonding layer by at least one of thermal sublimation, dip dyeing, thermal transfer printing or printing. The specific method comprises the following steps:
thermal sublimation: firstly, printing required colors and patterns on a film (at least one of PET, PI, PVC, TPU and PC) by using a printer, then heating to bake the film to be soft (more than or equal to 120 ℃), sticking the softened film on the surface of an adhesive layer, simultaneously heating to a certain pressure (more than or equal to 0.05MPa) and raising the temperature (more than or equal to 160 ℃), and sublimating color particles on the film at the temperature and under the pressure and permeating the color particles into resin of the adhesive layer, thereby obtaining the colors and the patterns in the adhesive layer.
Dip dyeing: and (3) partially or completely immersing the ceramic shell into dyeing liquid, and immersing for a period of time (1-30 min) at a certain temperature (60-95 ℃), wherein color particles in the dyeing liquid permeate into the bonding layer, so that coloring is realized.
Thermal transfer printing: printing a required pattern on a film (at least one of PET, PI, PVC, TPU and PC), heating to bake the film to be soft (not less than 120 ℃), sticking the softened film to the surface of an adhesive layer, simultaneously adding pressure, and transferring the pattern on the film to the adhesive layer at the temperature (not less than 140 ℃) and the pressure (not less than 0.05MPa), thereby obtaining the pattern on the surface layer of the adhesive layer.
Printing: preheating the ceramic shell (not less than 40 ℃), directly printing a pattern on the bonding layer by using an ink-jet printer, and heating or UV curing the ink to obtain the pattern on the surface layer of the bonding layer.
Spraying: preheating the ceramic shell (not less than 60 ℃), spraying the ink on the adhesive layer by using a paint spraying gun, and heating and curing the ink (120 ℃, 30min), thereby obtaining the pattern on the surface layer of the adhesive layer.
h: and (3) injection molding in a mold: after the adhesive layer is colored, the ceramic shell is placed in an injection mold for in-mold injection molding, and the combination of plastic and the adhesive layer is realized. The parameters of the injection molding in the mold are as follows: the mold temperature is 90-120 ℃, the material temperature is 280-310 ℃, and the injection pressure is 100-120 MPa.
i: plastic polishing and paint spraying: this process can be omitted if the plastic part is not used as an appearance. If the plastic part is to be the appearance, the plastic needs to be ground and painted.
The performance test method comprises the following steps:
linear light transmittance: spectrophotometer, wavelength range 580 nm.
Full transmittance: spectrophotometer, wavelength range 580 nm.
Tensile strength: universal testing machine, refer to GBT31541-2015 fine ceramic interface tensile and shear bond strength test method cross method.
Shear strength: universal testing machine, refer to GBT31541-2015 fine ceramic interface tensile and shear bond strength test method cross method.
CMYK values: a color detector.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims (14)

1. A ceramic plastic composite housing, comprising:
the ceramic main shell has the full light transmittance of more than or equal to 10 percent;
a plastic part;
and the bonding decorative layer is provided with an appearance decorative layer, is arranged between the ceramic main shell and the plastic part and is used for bonding the ceramic main shell and the plastic part.
2. The ceramic-plastic composite shell as claimed in claim 1, wherein the adhesive decoration layer comprises an adhesive layer, and the appearance decoration layer satisfies any one of the following conditions:
the appearance decoration layer is positioned inside the bonding layer;
the appearance decoration layer is positioned on one side, close to the plastic part, of the bonding layer, and part of the appearance decoration layer is embedded into the bonding layer;
the appearance decoration layer is located on one side, close to the plastic part, of the bonding layer.
3. The ceramic-plastic composite shell according to claim 1, wherein the linear transmittance of the ceramic main shell is 0.5% or more.
4. The ceramic-plastic composite housing according to claim 1, wherein the ceramic main shell satisfies at least one of the following conditions:
the full transmittance of the ceramic main shell is more than or equal to 30 percent;
the linear light transmittance of the ceramic main shell is more than or equal to 1%.
5. The ceramic-plastic composite shell according to claim 1, wherein the plastic part and the ceramic main shell satisfy any one of the following conditions:
the ceramic main shell is made of flat ceramic, a through hole is formed in the flat ceramic, and the plastic part covers one surface of the flat ceramic and is filled in the through hole;
the ceramic main shell is made of flat ceramic, the plastic part comprises an arc-shaped part and a platform part which are connected, the arc-shaped part and the platform part jointly define a step structure, and one known side of the flat ceramic is arranged in the step structure in a matched mode;
the plastic part comprises a first plane bottom wall and a first arc-shaped side wall connected to at least one side of the first plane bottom wall, an accommodating groove is defined by the first arc-shaped side wall and the first plane bottom wall together on one side deviating from the bending direction of the first arc-shaped side wall, and the ceramic main shell is filled in the accommodating groove;
the ceramic main shell comprises a second plane bottom wall and a second arc-shaped side wall connected to at least one side of the second plane bottom wall, and the plastic part covers the inner surface of the ceramic main shell.
6. The ceramic-plastic composite housing according to claim 2, wherein at least one of the following conditions is satisfied:
the ceramic main shell is made of zirconia ceramic;
the material of the bonding layer is a resin material, the resin material comprises at least one of polyurethane resin, acrylate resin, epoxy resin, polyamide resin and organic silicon resin, and preferably the resin material comprises the polyurethane resin;
the appearance decorative layer is composed of pigment particles;
the plastic part is made of at least one of polyamide, polyphthalamide, polyaramid, polycarbonate and polyphenylene sulfide, and preferably the plastic part is made of polyamide.
7. The ceramic-plastic composite shell according to claim 2, wherein the thickness of the ceramic main shell is 0.1-0.5 mm;
the thickness of the bonding layer is 5-50 mu m.
8. The ceramic-plastic composite housing according to claim 1, wherein the plastic part contains a reinforcing material;
optionally, the reinforcing material comprises glass fibers;
optionally, the mass percentage content of the reinforcing material is less than or equal to 60% based on the total mass of the plastic part;
optionally, the plastic part contains a colorant;
optionally, the plastic portion has a color substantially corresponding to a color of the ceramic main shell.
9. A method of making the ceramic-plastic composite housing of any one of claims 1-8, comprising:
forming an adhesive decoration layer on at least a part of the surface of the ceramic main shell;
and carrying out in-mold injection molding on the ceramic main shell with the bonding decoration layer so as to form a plastic part on the bonding decoration layer.
10. The method of claim 9, wherein forming the bonded decorative layer comprises:
forming an adhesive layer on at least a part of a surface of the ceramic main case by at least one of spraying, printing, and painting;
forming an appearance decorative layer on the adhesive layer by at least one of thermal sublimation, padding, thermal transfer printing, spraying, and printing.
11. The method according to claim 10, wherein the thermal sublimation is carried out by: printing a first appearance decorative pattern on a first film sheet by using a printer, heating and baking the first film sheet to be soft, attaching the softened first film sheet on the surface of the bonding layer, and carrying out first heating and first pressurization treatment on the first film sheet to ensure that the appearance decorative pattern is sublimated and permeates into the bonding layer to form the appearance decorative layer;
the dip dyeing is carried out by the following steps: immersing the bonding layer into a dyeing solution to enable pigment particles in the dyeing solution to permeate into the bonding layer to form the appearance decorative layer;
the thermal transfer printing is carried out by the following steps: printing a second appearance decorative pattern on a second film, heating and baking the second film to be soft, attaching the softened second film on the surface of the adhesive layer, and performing second heating and second pressurization treatment on the second film to transfer the second appearance decorative pattern onto the adhesive layer to form the appearance decorative layer;
the printing is performed by the steps of: preheating the ceramic main shell, then printing a decorative ink pattern on the bonding layer by using an ink-jet printer, and curing the decorative ink pattern to form the appearance decorative layer;
the spraying is carried out by the following steps: and spraying a decorative ink pattern on the bonding layer by using a paint spray gun, and solidifying the decorative ink to form the appearance decorative layer.
12. The method of claim 9, wherein the in-mold injection molding satisfies at least one of the following conditions:
the mold temperature is 90-120 ℃;
the material temperature is 280-310 ℃;
the injection pressure is 100-120 MPa.
13. The method of claim 9, further comprising:
and grinding and/or painting the plastic part.
14. An electronic device comprising the ceramic-plastic composite housing of any one of claims 1-8, the ceramic-plastic composite housing defining a receiving space;
the display screen is arranged in the accommodating space.
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