CN114685047A

CN114685047A - Inorganic glaze, shell preparation method and electronic equipment

Info

Publication number: CN114685047A
Application number: CN202011634146.3A
Authority: CN
Inventors: 赵岩峰
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2022-07-01

Abstract

The invention discloses an inorganic glaze, a shell, a method for preparing the shell and electronic equipment, wherein the inorganic glaze comprises 15-30 parts by weight of glass powder, 0.1-10 parts by weight of dye, an organic solvent and an auxiliary agent based on the total mass of the inorganic glaze. Therefore, the inorganic glaze material does not contain toxic and harmful elements, has the advantage of environmental protection, and overcomes the defect that the existing inorganic glaze material contains toxic substances. In addition, the inorganic glaze material has high color saturation and good appearance effect.

Description

Inorganic glaze, shell preparation method and electronic equipment

Technical Field

The invention belongs to the technical field of surface treatment, and particularly relates to an inorganic glaze, a shell, a method for preparing the shell and electronic equipment.

Background

At present, the development of the consumer electronics industry is faster and faster, and various manufacturers continuously seek technical innovation and functional innovation to meet the development trend of environmental protection, energy conservation and differentiation. The design of consumer electronics products has not been limited to functional perfection, and many designers have focused on the design of the appearance of consumer electronics products. The shell of the electronic equipment has the functions of protecting parts inside the electronic equipment and beautifying and decorating, and can also improve the use experience of users and the market competitiveness of products. However, the current decorative design of the shell is concentrated on the design of textures and colors, so that the visual sense is single, the picture is not vivid enough, and the decorative effect is poor.

Therefore, there is a need for an improved housing.

Disclosure of Invention

The present invention is made based on the discovery and recognition of the following facts and problems by the inventors.

The inventor finds that the process of using glass colored glaze in building glass prints inorganic glaze on the surface of glass, and then carries out thermalization processing treatment to permanently sinter the glaze on the surface of the glass to obtain a wear-resistant and acid and alkali resistant decorative glass product, wherein the product has high functionality and decoration. However, in the case of electronic equipment, there is no report on the use of inorganic glaze, because the glass thickness of architectural glass is large, and the glass thickness of electronic equipment case is small, so that the inorganic glaze of architectural glass industry cannot be directly used in the electronic equipment case. Moreover, the currently reported inorganic glaze generally contains toxic substances, and cannot meet the requirements of the electronic equipment industry on the shell.

The present invention aims to ameliorate at least one of the above technical problems to at least some extent.

The invention provides an inorganic glaze, which comprises 15-30 parts by weight of glass powder, 0.1-10 parts by weight of dye, organic solvent and auxiliary agent based on the total mass of the inorganic glaze. Therefore, the inorganic glaze material does not contain toxic and harmful elements, has the advantage of environmental protection, and overcomes the defect that the existing inorganic glaze material contains toxic substances. In addition, the inorganic glaze material has high color saturation and good appearance effect.

The invention also provides a shell, which comprises a glass substrate and a colored glaze coating; the colored glaze coating is positioned on the surface of the glass substrate; the material forming the colored glaze coating is the inorganic glaze material described above. Therefore, the shell has the advantages of rich appearance effect and high color saturation, and the problems of single vision and insufficient vivid picture of the existing shell are solved.

The present invention also provides a method of making a housing, the method comprising: providing a glass substrate; the glass substrate is coated with the inorganic glaze described above and dried to form a colored glaze coating. Therefore, the shell prepared by the method has rich appearance effect, gorgeous color and high color saturation. In addition, the method has the advantages of simple operation, convenient use, no need of large operation space, adaptability to various factory environments and the like, and is suitable for large-scale industrial production.

The present invention also provides an electronic device, including: the housing as described hereinbefore; the display screen assembly is connected with the shell, and an accommodating space is defined by the display screen assembly and the shell; and the mainboard is positioned in the accommodating space and is electrically connected with the display screen component. It should be noted that the electronic device has all the features and advantages of the housing described above, and therefore, the description thereof is omitted.

Drawings

FIG. 1 is a schematic view of a housing in one embodiment of the invention;

FIG. 2 is a flow chart of a method of preparing a shell according to one embodiment of the present invention;

FIG. 3 is a schematic diagram of an electronic device in one embodiment of the invention.

Reference numerals

100-shell, 110-glass substrate, 120-colored glaze coating, 1000-electronic equipment, 200-display screen component.

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 used are conventional products which are not indicated by manufacturers and can be obtained by market purchase.

At present, the shell of the electronic equipment has single appearance effect and poor decoration effect. The inventor finds that the colored glaze coating applied to the field of architectural glass has rich appearance effect, but the inorganic glaze material forming the colored glaze coating generally contains toxic substances and cannot meet the content requirement of an electronic equipment shell on the toxic substances. Moreover, the difference between the thickness of the architectural glass and the thickness of the glass in the electronic device shell is large, so that the current inorganic glaze cannot be directly applied to the electronic device shell.

In order to improve at least one of the above-mentioned technical problems, the present invention provides an inorganic glaze comprising 15 to 30 parts by weight of glass powder, 0.1 to 10 parts by weight of a dye, and an organic solvent and an auxiliary agent, based on the total mass of the inorganic glaze. Therefore, the inorganic glaze does not contain toxic substances, has the advantage of environmental protection, and can be directly applied to the shell of the electronic equipment. Moreover, the color saturation of the invention can reach 90-100%, and the appearance effect is rich.

The color saturation of the existing inorganic glaze is below 80%, and the color saturation of the inorganic glaze can reach 90-100% by using the glass powder and the dye with specific contents. The color saturation is color purity, which is one of the components of color, and the higher the purity is, the clearer the expression is, and the lower the purity is, the darker the expression is.

According to an embodiment of the present invention, the material forming the glass frit comprises SiO₂、Bi₂O₃、B₂O₃MgO and K₂And O. The above raw materials were mixed and then subjected to a solid-phase reaction at a high temperature to form a homogeneous body having a disordered structure, thereby obtaining a glass frit. The temperature at which the solid phase reaction is carried out at a high temperature is not limited in the present invention, as long as a homogeneous body having a disordered structure can be formed. The glass powder has stable chemical property, the acid resistance is far higher than that of lead oxide, the glass powder is high-transparency powder which is easy to polish and scratch resistant, and the glass powder also has the advantages of small particle size, good dispersibility, high transparency, good anti-settling effect and the like. In addition, the glass body has good affinity and strong steric hindrance, can be conveniently dispersed in the coating, can increase the fullness of the coating after film forming, and can be prepared into crystal transparent primer, so that the clear transparency is maintained, and good polishing performance is provided.

According to an embodiment of the present invention, SiO is based on the total mass of the materials forming the glass frit₂Is 40-80 parts by weight of Bi₂O₃In an amount of 20 to 40 parts by weight, B₂O₃Is 10-20 weight parts, MgO content is 1.2-3 weight parts, K₂The content of O is 2-4 parts by weight. Therefore, the glass powder does not contain harmful elements such as lead, vanadium, thallium, tellurium and the like, and has good chemical stability, wettability and fluidity. In particular, SiO₂Has the functions of containing and combining various particles and can have the effect of transparent materials when being made of SiO₂When the content of (b) is in the range of 40 to 80 parts by weight, the softening point and viscosity of the glass frit increase as the content of silica increases, and the chemical and thermal stability, acid resistance, and mechanical strength increase. Bi₂O₃And B₂O₃Dissolve SiO₂Promoting the dissolution of the material, Bi₂O₃And B₂O₃So that the glass frit is easily melted and inhibits an excessive increase in expansion coefficient and has proper fluidity in sintering. The MgO has the main functions of improving the chemical stability of the glass powder, simultaneously playing a certain role in inhibiting the migration of alkali metal impurities introduced by the raw materials, preventing the alkali metal impurities introduced by the raw materials from gathering together and further preventing the formation of dirt. K is₂O has a similar action to MgO. The specific contents of the substances are matched with each other, so that the glass powder has the advantages of high chemical stability, thermal stability, acid resistance, mechanical strength, low melting point, low expansion coefficient, transparency, no dirt and the like.

According to an embodiment of the present invention, the particle size of the glass frit is 1 to 10 μm. If the particle size of the glass frit is too large, larger particles are observed in the inorganic glaze, and the appearance is rough. If the particle size of the glass frit is too small, the production cost increases. When the grain diameter of the glass powder is 1-10 microns, the inorganic glaze material has fine color and better appearance effect.

Further, the melting point of the glass frit is 500-900 ℃. Therefore, the glass powder has the advantages of low melting point, low heating temperature, low cost, low thermal expansion coefficient, no need of shaping and processing, simple process and the like.

According to an embodiment of the present invention, the dye includes at least one of metal oxide, metal salt, metal sulfide, metal nitride. Illustratively, the metal oxide includes at least one of chromium oxide, nickel oxide, cobalt oxide, aluminum oxide, tin oxide, antimony oxide, calcium oxide, kaolin, titanium dioxide, iron oxide, copper oxide, and nickel oxide. The metal salt includes at least one of iron salt, uranium salt, cobalt salt and manganese salt. The cobalt salt comprises cobalt aluminate. The iron salt comprises ferric chromate. The metal sulfide includes cadmium sulfide. The metal nitride includes tin nitride. Therefore, various gorgeous appearance colors can be endowed to the inorganic glaze material by adding dyes with different colors.

Specifically, when the green color is required, at least one of chromium oxide and nickel oxide may be added. When a blue color is desired, at least one of cobalt oxide and cobalt aluminate may be added. When a red color is desired, alumina may be added. When a rose-violet color is desired, tin oxide may be added. When a yellow color is desired, at least one of cadmium sulfide, uranium salts, and antimony oxide may be added. When a black color is required, at least one of iron chromate, cobalt salt and manganese salt may be added. When white color is desired, at least one of tin nitride, calcium oxide, kaolin, cobalt oxide, and titanium dioxide may be added. When a brown-red color is desired, iron oxide and manganese salts, etc. may be added. When a brownish black color is desired, copper oxide may be added. When a gray color is desired, nickel trioxide can be added.

According to the embodiment of the present invention, the particle size of the dye is 1 to 10 μm, and thus, if the particle size of the dye is too large, the inorganic glaze material may observe large particles and the appearance effect is rough. If the particle size of the dye is too small, the production cost is increased. When the particle size of the dye is 1-10 microns, the obtained inorganic glaze material has fine appearance color and better appearance effect.

According to an embodiment of the present invention, the adjuvant includes at least one of natural resin, camphor oil and rosin oil. The kind of the organic solvent is not limited in the present invention, and any organic solvent that can be used in combination with the auxiliary agent to uniformly disperse the glass powder and the dye in the mixed solution of the auxiliary agent and the organic solvent can be used, for example, the organic solvent can be one, two or more of an ester solvent, an alcohol solvent, a ketone solvent, an ether solvent, an alkane solvent, an aromatic solvent, a halogenated hydrocarbon solvent, and the like. Therefore, the assistant and the organic solvent are matched with each other, so that the glass powder and the dye can be uniformly dispersed, a suspension state is kept, and precipitation is avoided. The assistant and the organic solvent can also make the inorganic glaze material have certain viscosity, thereby having certain adhesion to the glass substrate. In addition, the auxiliary agent and the organic solvent also have the property of being volatile during heating, the auxiliary agent and the organic solvent can be completely volatilized and decomposed before the ink is sintered, no residue is left, and the ink cannot be foamed, so that the auxiliary agent and the organic solvent basically have no influence on the property of the finally formed colored glaze coating.

The present invention further provides a housing, as shown in fig. 1, the housing 100 includes a glass substrate 110 and a colored glaze coating 120, the colored glaze coating 120 is located on the surface of the glass substrate 110, and the material forming the colored glaze coating is the inorganic glaze described above. The colored glaze coating has strong adhesive force on the glass substrate, and has the advantages of no fading, no peeling, long service life and the like.

According to an embodiment of the present invention, the glass substrate has a thickness of 0.05 to 0.65 mm. Therefore, the inorganic glaze can be applied to electronic equipment shells.

According to an embodiment of the invention, the thickness of the enamel coating is 5-200 μm. Under the thickness, the shell can have abundant appearance effect.

According to an embodiment of the present invention, the housing further includes a cover-bottom ink layer, and the cover-bottom ink layer is located on a side of the glass substrate away from the colored glaze coating. Thus, the cover bottom ink layer can play a role of shielding elements positioned in the shell.

The present invention also provides a method of preparing a case, as shown in fig. 2, the method including:

s100, providing a glass substrate

According to an embodiment of the invention, a glass substrate is provided in this step. The glass substrate may be a substrate which is processed to be directly subjected to the next process, or the process may further include cutting, cleaning, and processing of the glass. Illustratively, the method may further comprise the steps of: cutting float soda-lime glass, float high-alumina glass or overflow high-alumina glass, finishing the plane size and shape, holes and chamfers of the glass, performing CNC (Computer numerical control) on partial glass surface, and then performing side polishing treatment. And cleaning CNC oil stain and cooling liquid by using ultrasonic waves and alkaline cleaning agents. Subsequently, in order to obtain a glass substrate with a specific shape, the glass can be subjected to hot bending treatment at a high temperature by using a test mold to form a curved surface, and defects such as pits, impressions and the like caused in the hot bending process can be polished and repaired, and particularly, the concave and convex surfaces can be polished once. Subsequently, the polishing powder remaining on the surface of the glass substrate can be cleaned by ultrasonic waves in combination with an alkaline cleaning solution. The glass may be subsequently strengthened, and in particular, the glass may be subjected to K-Na ion substitution at a high temperature and then washed.

And S200, coating inorganic glaze on the glass substrate, and drying to form a colored glaze coating.

According to an embodiment of the present invention, an inorganic glaze is coated on a glass substrate in this step, and dried to form a colored glaze coating. The inorganic glaze can be the inorganic glaze described above, and is not described in detail herein. The manner of coating is not particularly limited, and may specifically include at least one of screen printing and printing.

According to an embodiment of the invention, the drying comprises: the glass substrate coated with the inorganic glaze is subjected to a stepwise temperature rise. According to some embodiments of the invention, the step of increasing the temperature may comprise the following operations:

the first stage, raising from room temperature to 110 ℃, is used for preheating the inorganic glaze. Further, the heat preservation time of the first stage is 3-5min, and the inorganic glaze can be better preheated in the heat preservation time.

And in the second stage, the temperature is raised from 110 ℃ to 220 ℃ for evaporating and gasifying the low-melting-point organic solvent. Furthermore, the heat preservation time of the second stage is 5-10min, and under the heat preservation time, the organic solvent with low melting point can be better volatilized completely.

And the third stage, raising the temperature from 220 deg.c to 450 deg.c for burning and gasifying the high melting point organic solvent. Furthermore, the heat preservation time of the third stage is 10-15min, and under the heat preservation time, the organic solvent with high melting point can be better volatilized completely.

And a fourth stage, raising the temperature from 450 ℃ to 600 ℃, wherein the glass powder in the inorganic glaze begins to melt, and the surface of the glass substrate is slightly softened. Furthermore, the heat preservation time of the fourth stage is 10-15min, and under the heat preservation time, the glass powder in the inorganic glaze can be better melted.

The fifth stage: and raising the temperature from 600 ℃ to 900 ℃, wherein the glass powder in the inorganic glaze is completely melted, the dyeing powder is also melted into the inorganic glaze, the surface of the glass substrate is completely softened, the colored glaze and the glass are combined into a whole, the transfer printing and sintering of the glaze color are completed, and the colored glaze coating is formed. Optionally, the holding time of the fifth stage is 15-20min, at which time the colored glaze can be better combined with the glass substrate.

Further, the method includes the step of slowly cooling to room temperature after the step of raising the temperature. The time and the speed of cooling of this application to the cooling do not do the restriction, and the technical staff can adjust as required. More specifically, the gradual cooling to room temperature described herein may be performed by cooling the glass substrate and the colored glaze to room temperature after the temperature is raised in the foregoing stage without any artificial cooling treatment. The specific temperature of the room temperature is not particularly limited, and may be, for example, 5 to 35 ℃.

According to an embodiment of the invention, the method further comprises: and forming a bottom ink covering layer. The bottom-covering ink layer is positioned on one side, away from the colored glaze coating, of the glass substrate, and therefore the obtained shell can play a role in shielding internal electronic elements.

The present invention further provides an electronic device, as shown in fig. 3, the electronic device 1000 includes the housing 100, the display screen assembly 200 and a main board (not shown in the figure), the display screen assembly 200 is connected to the housing 100, the display screen assembly 200 and the housing 100 define an accommodating space, the main board is located in the accommodating space, and the main board is electrically connected to the display screen assembly 200. Thus, the electronic device has all the features and advantages of the housing described above, and will not be described herein.

It should be noted that the specific type of the electronic device is not particularly limited, and may be, for example, a mobile phone, a smart watch, a palm computer or a notebook computer. The electronic device may be any of various types of computer system devices that are mobile or portable and perform wireless communication. In particular, the electronic device may be a mobile or smart phone (e.g., an iPhone (TM) based phone), a Portable gaming device (e.g., Nintendo DS (TM), PlayStation Portable (TM), Gameboy Advance (TM), iPhone (TM)), a laptop, a PDA, a Portable internet device, a music player, and a data storage device, other handheld devices, and a head-mounted device such as a watch, an in-ear headphone, a pendant, a headset, etc., and other wearable devices (e.g., a head-mounted device (HMD) such as an electronic necklace, an electronic garment, an electronic bracelet, an electronic tattoo, or a smart watch). The electronic device may also be any of a number of electronic devices including, but not limited to, cellular phones, smart phones, other wireless communication devices, personal digital assistants, audio players, other media players, music recorders, video recorders, cameras, other media recorders, radios, medical devices, vehicle transportation equipment, calculators, programmable remote controllers, pagers, laptop computers, desktop computers, printers, netbook computers, Personal Digital Assistants (PDAs), Portable Multimedia Players (PMPs), moving picture experts group (MPEG-1 or MPEG-2) audio layer 3(MP3) players, portable medical devices, and digital cameras and combinations thereof. In some cases, the electronic device may perform a variety of functions (e.g., playing music, displaying videos, storing pictures, and receiving and sending telephone calls). If desired, the electronic device may be a portable device such as a cellular telephone, media player, other handheld device, wristwatch device, pendant device, earpiece device, or other compact portable device.

The examples described below in this application, unless otherwise indicated, all reagents used are either commercially available or can be prepared by the methods described in this application.

Example 1

(1) Providing a glass substrate

Cutting float soda-lime glass, float high-alumina glass or overflow high-alumina glass, finishing the planar size, shape, holes and chamfers of the product, and performing side polishing treatment after CNC (computerized numerical control) is performed on part of the glass surface. And cleaning CNC oil stain and cooling liquid by using ultrasonic waves and alkaline cleaning agents. Subsequently, in order to obtain a glass substrate with a specific shape, the glass can be subjected to a hot bending treatment at a high temperature by using a test mold to form a curved surface, and defects such as pits, impressions and the like caused in the hot bending process can be polished and repaired, and particularly, the concave and convex surfaces can be polished once. Subsequently, the polishing powder remaining on the surface of the glass substrate can be cleaned by ultrasonic waves in combination with an alkaline cleaning solution. The glass may be subsequently strengthened, and in particular, the glass may be subjected to K-Na ion substitution at a high temperature and then washed.

Wherein the thickness of the glass substrate is controlled to be 0.05-0.65mm for standby.

(2) Preparation of glass powder

55 parts by weight of SiO₂27 parts by weight of Bi₂O₃14 parts by weight of B₂O₃1.4 parts by weight of MgO and 2.7 parts by weight of K₂And O, mixing, and carrying out solid-phase reaction at high temperature to form a homogeneous body with a disordered structure, thereby obtaining the glass powder.

The grain size of the glass powder is 1-10 microns. The melting point of the glass powder is 500-900 ℃.

(3) Preparation of inorganic glaze

Mixing 16 parts by weight of glass powder, 4 parts by weight of dye, a proper amount of organic solvent and auxiliary agent to obtain the inorganic glaze.

The particle size of the dye is 1-10 microns. The dye is cobalt oxide, the auxiliary agent is natural resin, and the organic solvent is ethanol.

(4) And (4) coating the inorganic glaze obtained in the step (3) on a glass substrate, and carrying out stage heating on the glass substrate coated with the inorganic glaze to form a colored glaze coating.

The coating mode can be screen printing or printing.

The step temperature rise comprises the following steps: in the first stage, the temperature is raised from room temperature to 110 ℃, and the heat preservation time is 3-5 min. In the second stage, the temperature is increased from 110 ℃ to 220 ℃, and the heat preservation time is 5-10 min. In the third stage, the temperature is increased from 220 ℃ to 450 ℃, and the heat preservation time is 10-15 min. And in the fourth stage, the temperature is increased from 450 ℃ to 600 ℃, and the heat preservation time is 10-15 min. The fifth stage: raising the temperature from 600 ℃ to 900 ℃, and keeping the temperature for 15-20 min.

(5) Spraying paint for cover bottom

And (2) spraying a cover bottom on one side of the glass substrate far away from the colored glaze coating by using white or other colored primers, wherein the spraying parameters are as follows, and the weight ratio of the gloss oil to the curing agent to the diluent is 50-60: 15-40: 10-30, the viscosity of the ink is 8-12Pa.s, the distance between a spray gun and a sprayed sample is 10cm, the self-transmission speed of the sample is 10-60 DEG/s, the spraying speed during spraying is 600mm/s, the ink supply pressure is 200Pa, the atomization pressure is 300Pa, the spraying pressure is 350Pa, the baking temperature is 80-90 ℃, the baking time is 50-60min, and the thickness is uniformly controlled to be 10-15 microns.

Example 2

The case was prepared with reference to example 1. The difference from example 1 is that:

(2) preparation of glass powder

Mixing 40 parts by weight of SiO₂40 parts by weight of Bi₂O₃20 parts by weight of B₂O₃1.2 parts by weight of MgO and 2 parts by weight of K₂And O, mixing, and carrying out solid-phase reaction at high temperature to form a homogeneous body with a disordered structure, thereby obtaining the glass powder.

(3) Preparation of inorganic glaze

Mixing 15 parts by weight of glass powder, 10 parts by weight of dye, a proper amount of organic solvent and an auxiliary agent to obtain the inorganic glaze.

The particle size of the dye is 1-10 microns. The dye is chromic oxide, the auxiliary agent is camphor oil, and the organic solvent is ethanol.

Example 3

(2) preparation of glass powder

80 parts by weight of SiO₂20 parts by weight of Bi₂O₃10 parts by weight of B₂O₃1.2 parts by weight of MgO and 2 parts by weight of K₂And O, mixing, and carrying out solid-phase reaction at high temperature to form a homogeneous body with a disordered structure, thereby obtaining the glass powder.

The grain diameter of the glass powder is 1-10 microns. The melting point of the glass powder is 500-900 ℃.

(3) Preparation of inorganic glaze

Mixing 30 parts by weight of glass powder, 0.1 part by weight of dye, a proper amount of organic solvent and an auxiliary agent to obtain the inorganic glaze.

The particle size of the dye is 1-10 microns. The dye is titanium dioxide, the auxiliary agent is rosin oil, and the organic solvent is ethanol.

Example 4

(2) preparation of glass powder

50 parts by weight of SiO₂30 parts by weight of Bi₂O₃15 parts by weight of B₂O₃2 parts by weight of MgO and 3 parts by weight of K₂And O, mixing, and carrying out solid-phase reaction at high temperature to form a homogeneous body with a disordered structure, thereby obtaining the glass powder.

(3) Preparation of inorganic glaze

And mixing 22 parts by weight of glass powder, 5 parts by weight of dye, a proper amount of organic solvent and an auxiliary agent to obtain the inorganic glaze.

The particle size of the dye is 1-10 microns. The dye is aluminum oxide, the auxiliary agent is camphor oil, and the organic solvent is ethanol.

Example 5

(2) preparation of glass powder

70 weight portions ofSiO of₂35 parts by weight of Bi₂O₃12 parts by weight of B₂O₃1.6 parts by weight of MgO and 3.5 parts by weight of K₂And O, mixing, and carrying out solid-phase reaction at high temperature to form a homogeneous body with a disordered structure, thereby obtaining the glass powder.

(3) Preparation of inorganic glaze

Mixing 16 parts by weight of glass powder, 9 parts by weight of dye, a proper amount of organic solvent and an auxiliary agent to obtain the inorganic glaze.

The particle size of the dye is 1-10 microns. The dye is tin oxide, the auxiliary agent is rosin oil, and the organic solvent is ethanol.

Comparative example 1

in the step (3), 35 parts by weight of glass powder, 5 parts by weight of dye, a proper amount of organic solvent and an auxiliary agent are mixed to obtain the inorganic glaze.

Wherein the particle size of the dye is 1-10 microns. The dye is cobalt oxide, the auxiliary agent is natural resin, and the organic solvent is ethanol.

Comparative example 2

in the step (3), 13 parts by weight of glass powder, 5 parts by weight of dye, a proper amount of organic solvent and an auxiliary agent are mixed to obtain the inorganic glaze.

Comparative example 3

in the step (3), 22 parts by weight of glass powder, 12 parts by weight of dye, a proper amount of organic solvent and an auxiliary agent are mixed to obtain the inorganic glaze.

Comparative example 4

in the step (3), 22 parts by weight of glass powder, 0.07 part by weight of dye, a proper amount of organic solvent and an auxiliary agent are mixed to obtain the inorganic glaze.

The color saturation of the cases prepared in examples 1 to 5 and comparative examples 1 to 4 was measured, and the sample to be measured was placed in the area to be measured of the color saturation measuring instrument to be measured, to obtain the measurement result.

The test results are: the color saturation of the shells obtained in examples 1 to 5 was 90 to 100%, and the shells were gorgeous in appearance and high in color saturation. The color saturation of the cases of comparative examples 1 to 4 was 70 to 80%, and the color saturation was poor.

It can be seen that the color saturation of 90-100% can be achieved only when the glass powder content is 15-30 parts by weight and the dye content is 0.1-10 parts by weight, based on the total mass of the inorganic glaze.

The embodiments of the present application have been described in detail, but the present application is not limited to the details of the above embodiments, and various simple modifications can be made to the technical solution of the present application within the technical idea of the present application, and the simple modifications belong to the protection scope of the present application. It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention.

In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like 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 present 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. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

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

1. The inorganic glaze is characterized by comprising 15-30 parts by weight of glass powder, 0.1-10 parts by weight of dye, organic solvent and auxiliary agent based on the total mass of the inorganic glaze.

2. The inorganic glaze of claim 1 wherein the material forming the glass frit comprises SiO₂、Bi₂O₃、B₂O₃MgO and K₂O。

3. The inorganic glaze of claim 2 wherein said SiO is based on the total mass of the materials forming said glass frit₂Is 40 to 80 parts by weight, the Bi₂O₃In an amount of 20 to 40 parts by weight, said B₂O₃The content of (A) is 10-20 parts by weight, the content of MgO is 1.2-3 parts by weight, and K is₂The content of O is 2-4 parts by weight.

4. The inorganic glaze material as claimed in claim 1, wherein the particle size of the glass powder is 1 to 10 μm;

optionally, the melting point of the glass powder is 500-900 ℃.

5. The inorganic glaze of claim 1 wherein the dye comprises at least one of a metal oxide, a metal salt, a metal sulfide, a metal nitride;

optionally, the metal oxide comprises at least one of chromium oxide, nickel oxide, cobalt oxide, aluminum oxide, tin oxide, antimony oxide, calcium oxide, kaolin, titanium dioxide, iron oxide, copper oxide, and nickel oxide;

the metal salt comprises at least one of iron salt, uranium salt, cobalt salt and manganese salt; optionally, the cobalt salt comprises cobalt aluminate; the iron salt comprises ferric chromate;

the metal sulfide includes cadmium sulfide;

the metal nitride comprises tin nitride;

optionally, the particle size of the dye is 1-10 microns;

optionally, the adjuvant is at least one of natural resin, camphor oil and rosin oil.

6. A housing, comprising a glass substrate and a colored glaze coating; the colored glaze coating is positioned on the surface of the glass substrate;

the material forming the enamel coating is the inorganic glaze according to any one of claims 1 to 5.

7. The housing according to claim 6, wherein the glass substrate has a thickness of 0.05-0.65 mm.

8. The housing according to claim 6, wherein the thickness of the enamel coating is 5-200 μm.

9. The housing of claim 6, further comprising a cover-bottom ink layer on a side of the glass substrate away from the enamel coating.

10. A method of making a housing, the method comprising:

providing a glass substrate;

coating the inorganic glaze according to any one of claims 1 to 5 on the glass substrate, and drying to form a colored glaze coating.

11. The method of claim 10, wherein the manner of applying comprises at least one of screen printing and printing.

12. The method of claim 10, wherein the drying comprises: carrying out staged heating on the glass substrate coated with the inorganic glaze;

the step of raising the temperature comprises: a first stage of raising the temperature from room temperature to 110 ℃; a second stage, raising the temperature from 110 ℃ to 220 ℃; a third stage, increasing from 220 ℃ to 450 ℃; a fourth stage, rising from 450 ℃ to 600 ℃; the fifth stage: from 600 ℃ to 900 ℃.

13. The method of claim 12, wherein the first stage incubation time is 3-5 min;

optionally, the holding time of the second stage is 5-10 min;

optionally, the holding time of the third stage is 10-15 min;

optionally, the holding time of the fourth stage is 10-15 min;

optionally, the incubation time of the fifth stage is 15-20 min.

14. The method of claim 10, further comprising: forming a bottom ink layer; the cover bottom ink layer is positioned on one side of the glass substrate far away from the colored glaze coating.

15. An electronic device, characterized in that the electronic device comprises:

the housing of any one of claims 6-9;

the display screen assembly is connected with the shell, and an accommodating space is defined by the display screen assembly and the shell;

and the mainboard is positioned in the accommodating space and is electrically connected with the display screen component.