CN111500109A - Mirror silver ink, preparation method thereof and electronic equipment shell - Google Patents
Mirror silver ink, preparation method thereof and electronic equipment shell Download PDFInfo
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- CN111500109A CN111500109A CN202010385029.1A CN202010385029A CN111500109A CN 111500109 A CN111500109 A CN 111500109A CN 202010385029 A CN202010385029 A CN 202010385029A CN 111500109 A CN111500109 A CN 111500109A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/102—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds
- C09D11/104—Polyesters
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/106—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C09D11/107—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from unsaturated acids or derivatives thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/0279—Improving the user comfort or ergonomics
- H04M1/0283—Improving the user comfort or ergonomics for providing a decorative aspect, e.g. customization of casings, exchangeable faceplate
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/18—Telephone sets specially adapted for use in ships, mines, or other places exposed to adverse environment
- H04M1/185—Improving the rigidity of the casing or resistance to shocks
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- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Organic Chemistry (AREA)
- Signal Processing (AREA)
- General Chemical & Material Sciences (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
The application provides mirror silver ink and a preparation method thereof, an electronic device shell and electronic equipment, wherein the mirror silver ink comprises: 15-25 parts of resin; 20-30 parts of diluent; 3-5 parts of a curing agent; 1-2 parts of a coupling agent; 40-60 parts of electroplated aluminum paste; and 1-2 parts by weight of mercapto-modified organosilicon. In the mirror silver ink, a proper amount of sulfydryl modified organic silicon is added, so that a lower dielectric constant (such as < 2.8) can be obtained, the influence of frequency attenuation of an antenna when the mirror silver ink is applied to electronic equipment (such as a mobile phone) is small, the signal transmission of the electronic equipment is facilitated, the electronic shielding problem is improved, the limitation on material selection of a shell of the electronic equipment is smaller, and the selection range of the material of the shell of the electronic equipment can be expanded.
Description
Technical Field
The application relates to the field of mirror silver ink and electronic equipment, in particular to mirror silver ink, a preparation method thereof and an electronic equipment shell.
Background
With the more diversification of CMF (color, material and touch) models of mobile phone glass, the requirement on mirror silver ink is higher and higher. At present, the drawing force of mirror ink on the market is low, the whole machine falling risk is high, and the condition that the whole machine of a mobile phone falls off the ink is easily caused. In addition, the dielectric constant of the mirror silver ink layer on the market is higher (about more than 3.6), the frequency attenuation of the antenna is more than 50MHz, the influence on the mobile phone antenna is larger, and especially, the influence on 5G signals is larger.
Thus, the current technology related to mirror silver inks still needs to be improved.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, an object of the present invention is to provide a mirror-like silver ink having a low dielectric constant or a high drawing force.
In one aspect of the present application, a specular silver ink is provided. According to an embodiment of the present application, the specular silver ink includes: 15-25 parts of resin; 20-30 parts of diluent; 3-5 parts of a curing agent; 1-2 parts of a coupling agent; 40-60 parts of electroplated aluminum paste; and 1-2 parts by weight of mercapto-modified organosilicon. In the mirror silver ink, a proper amount of sulfydryl modified organic silicon is added, so that a lower dielectric constant (such as < 2.8) can be obtained, the influence of frequency attenuation of an antenna when the mirror silver ink is applied to electronic equipment (such as a mobile phone) is small, the signal transmission of the electronic equipment is facilitated, the electronic shielding problem is improved, the limitation on material selection of a shell of the electronic equipment is smaller, and the selection range of the material of the shell of the electronic equipment can be expanded.
In another aspect of the present application, a method of making a specular silver ink is provided. According to an embodiment of the application, the method comprises: carrying out first stirring and mixing on 20-30 parts by weight of diluent and 15-25 parts by weight of resin to obtain a first mixture; carrying out second stirring and mixing on the first mixture, 3-5 parts by weight of curing agent, 1-2 parts by weight of coupling agent, 40-60 parts by weight of electroplated aluminum paste and 1-2 parts by weight of sulfhydryl modified organic silicon to obtain a second mixture; and filtering the second mixture to obtain the mirror silver ink. The method is simple and convenient to operate, easy to control, free of excessive requirements on equipment and technicians, easy to realize industrial production, low in cost and good in economy, the obtained mirror silver ink has a low dielectric constant, the method is suitable for being used in electronic equipment, the influence on frequency attenuation of an antenna of the electronic equipment is small, and the signal transmission quality of the electronic equipment can be improved while the mirror silver appearance effect is realized.
In another aspect of the present application, an electronic device housing is provided. According to an embodiment of the present application, the electronic device case includes: a housing body; the mirror surface silver ink layer is arranged on at least part of the outer surface of the shell body, and is formed by the mirror surface silver ink or the mirror surface silver ink prepared by the method. The electronic equipment shell has an ideal mirror silver appearance, has small influence on signal transmission of the electronic equipment, and can effectively improve the signal shielding problem.
In yet another aspect of the present application, an electronic device housing is provided. According to an embodiment of the present application, the electronic device case includes a case body; the mirror surface silver ink layer is arranged on at least part of the outer surface of the shell body, and the dielectric constant of the mirror surface silver ink layer is smaller than 2.8. The electronic equipment shell has an ideal mirror silver appearance, has small influence on signal transmission of the electronic equipment, and can effectively improve the signal shielding problem.
In yet another aspect of the present application, an electronic device is provided. According to an embodiment of the present application, the electronic device includes the electronic device case described above, in which an accommodating space is defined; and the display screen is arranged in the accommodating space. The electronic equipment has good mirror silver appearance, high signal transmission quality, small frequency attenuation and better user experience.
Detailed Description
The following describes embodiments of the present invention in detail. The following examples are illustrative only and are not to be construed as limiting the invention. 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 specular silver ink is provided. According to an embodiment of the present application, the specular silver ink includes: 15-25 parts of resin; 20-30 parts of diluent; 3-5 parts of a curing agent; 1-2 parts of a coupling agent; 40-60 parts of electroplated aluminum paste; and 1-2 parts by weight of mercapto-modified organosilicon. The mirror silver ink has the advantages of strong stability, good gloss effect, difficult oxidation, strong processing resistance and low dielectric constant after being cured. Specifically, in the mirror silver ink, a proper amount of mercapto-modified organic silicon is added, so that a lower dielectric constant (such as < 2.8) can be obtained, the influence on the frequency attenuation of an antenna when the mirror silver ink is applied to electronic equipment (such as a mobile phone) is small, the signal transmission of the electronic equipment is facilitated, the electronic shielding problem is favorably improved, the limitation on the material selection of a shell of the electronic equipment is smaller, and the selection range of the material of the shell of the electronic equipment can be expanded.
Specifically, the content of the resin may be specifically 15 parts by weight, 16 parts by weight, 17 parts by weight, 18 parts by weight, 19 parts by weight, 20 parts by weight, 21 parts by weight, 22 parts by weight, 23 parts by weight, 24 parts by weight, 25 parts by weight, etc., the content of the diluent may be specifically 20 parts by weight, 21 parts by weight, 22 parts by weight, 23 parts by weight, 24 parts by weight, 25 parts by weight, 26 parts by weight, 27 parts by weight, 28 parts by weight, 29 parts by weight, 30 parts by weight, etc., the content of the curing agent may be specifically 3 parts by weight, 3.2 parts by weight, 3.5 parts by weight, 3.8 parts by weight, 4 parts by weight, 4.2 parts by weight, 4.5 parts by weight, 4.8 parts by weight, 5 parts by weight, etc., the content of the coupling agent may be specifically 1 part by weight, 1.1.1 part by weight, 1.2 parts by weight, 1.3 parts by weight, 1.4 parts by weight, 1.5 parts by weight, 1.6 parts by weight, 1.7 parts by weight, 1.8 parts by weight, 1.9 parts by weight, 2 parts by weight, specific contents of the electroplated aluminum silver paste may be 40 parts by weight, 42 parts by weight, 45 parts by weight, 48 parts by weight, 50 parts by weight, 52 parts by weight, 55 parts by weight, 58 parts by weight, 60 parts by weight, etc., and specific contents of the mercapto-modified silicone may be 1 part by weight, 1.1 parts by weight, 1.2 parts by weight, 1.3 parts by weight, 1.4 parts by weight, 1.5 parts by weight, 1.6 parts by weight, 1.7 parts by weight, 1.8 parts by weight, 1.9 parts by weight, 2 parts by weight, etc. The components can be better matched with each other within the content range, and the mirror silver ink with good appearance effect, large adhesive force and low dielectric constant can be obtained.
Specifically, the specific kind of the numerical value may be at least one of an acrylic resin and a saturated polyester resin. Therefore, the resin can realize better mirror silver effect.
In some embodiments, the weight average molecular weight of the resin may be 8000-.
In some embodiments, a resin with a certain hydroxyl value may be selected to facilitate crosslinking of the resin and improve the resistance and the drawing force of the ink, and specifically, the hydroxyl value of the resin may be 4 to 10mgKOH/g (specifically, 4mgKOH/g, 5mgKOH/g, 6mgKOH/g, 7mgKOH/g, 8mgKOH/g, 9mgKOH/g, 10mgKOH/g, etc.). Within the hydroxyl value range, the ink has proper crosslinking degree after being cured, so that not only can better chemical resistance and drawing force be ensured, but also a better mirror silver appearance effect can be obtained, and if the resin hydroxyl value is less than 4mgKOH/g, the resin crosslinking property is relatively poor, and the chemical resistance and the drawing force of the ink are relatively low; if the hydroxyl value of the resin is more than 10mgKOH/g, the resin is liable to react with the electroplated aluminum paste to affect the mirror effect.
In some embodiments, the acid value of the resin may be < 2 mgKOH/g. In the acid value range, the resin can not react with the electroplated aluminum paste, so that the electroplated aluminum paste can realize an ideal mirror surface silver effect, and if the acid value of the resin is more than 2mgKOH/g, the resin has high acid value and is easy to react with the electroplated aluminum paste to influence the mirror surface effect.
Specifically, the diluent may be an organic solvent, and specifically may be at least one of an ester organic solvent and a ketone organic solvent. Further, the boiling point of the diluent can be 190-240 deg.C (specifically, 190 deg.C, 200 deg.C, 210 deg.C, 220 deg.C, 230 deg.C, 240 deg.C, etc.). Within this boiling point range, the ink has suitable printing performance, and does not dry too quickly to affect printing, and is not difficult to volatilize to affect the performance of the ink layer. If the temperature is lower than 190 ℃, the drying speed is relatively accelerated, which is not beneficial to printing construction, and if the temperature is higher than 240 ℃, the volatilization difficulty of the solvent is relatively increased, which can cause the performance of the ink layer to be reduced. Specifically, the diluent may be isophorone, in particular, from the viewpoint of printing and resin solubility.
Specifically, the curing agent may be a latent curing agent, i.e., a curing agent which is added to the resin to form a one-component system having a certain storage stability at room temperature and capable of rapidly performing a curing reaction under conditions of heat, light, moisture, pressure, etc. Specifically, the isocyanate curing agent may be a blocked isocyanate curing agent, and more specifically, a blocked isocyanate curing agent MF-K60X/TPA-B80X and the like may be used. The blocked isocyanate curing agent can react with hydroxyl in resin (RNCO + R 'OH → RNHCOOR'), so that the curing agent can be effectively matched with the hydroxyl value of the resin to increase the crosslinking density of the film layer and further improve the drawing force of the film layer.
Specifically, the coupling agent may be a silane coupling and sealing agent, specifically a coupling agent having a predetermined substituent, for example, a silane coupling agent having at least one of an isocyanate group and an epoxy group, and more specifically KBM-403 and the like.
Specifically, the electroplated aluminum paste can be vacuum electroplated aluminum paste, and the main components of the electroplated aluminum paste are snowflake-shaped aluminum particles and petroleum solvent which are in a paste shape. Wherein, the surface of the aluminum particle is smooth and flat, the particle size distribution is concentrated, the shape is regular, the aluminum particle has excellent light reflection capability and metal luster, and when the aluminum particle is mixed with transparent color pigment for use, the paint film has obvious angle-dependent heterochromous effect, and the decorative effect is very gorgeous and beautiful. Wherein, the vacuum electroplating aluminum paste with the mass concentration of aluminum ions of 10-15% (10%, 11%, 12%, 13%, 14%, 15%, etc.) can be adopted. The concentration range can have more proper viscosity while ensuring a better mirror effect picture, is easy to construct, can increase the viscosity if the concentration is too high, can reduce the viscosity if the concentration is too low, and can easily precipitate if the viscosity is too low.
Specifically, in the electroplated aluminum silver paste, the particle size of the aluminum particles can be 1-6 μm (specifically, 1 μm, 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, etc.). Within the particle size range, higher film layer stacking compactness and certain crosslinking density can be obtained, so that the drawing force of the ink is improved, and the problem that the ink falls off from the whole machine is solved.
In some embodiments, the aluminum ions include first aluminum particles having a particle size of 4 to 6 μm and second aluminum particles having a particle size of 1 to 2 μm. Therefore, the stacking compactness and the crosslinking degree of a film layer formed after the ink is cured are further improved, the drawing force of the ink layer is further improved, and the problem that the ink falls off from the whole machine is further improved. Wherein the second aluminum particles may be spherical aluminum particles. From this, spherical aluminum particle can cooperate with first aluminum particle well, and the rete piles up the compactedness better, and the drawing force is also higher.
It should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the 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 mercapto-modified silicone can greatly reduce the dielectric constant of the coating film with a small amount of addition. Specifically, the mercapto group in the mercapto group modified organosilicon can effectively hinder electron transition, so that the dielectric constant of the mirror silver ink is obviously reduced. In some embodiments, the mercapto-modified silicone may be DC-201 of eastern novelties, and the like.
Specifically, the dielectric constant of the mirror ink is less than 2.8 (specifically, 2.7, 2.6, 2.5, 2.4, 2.3, 2.2, 2.1, 2, etc.); the drawing force is more than 20MPa (such as 21MPa, 2.2MPa, 2.3MPa, 2.4MPa, 2.5MPa, 2.6MPa, 2.7MPa, 2.8MPa, 2.9MPa, 3MPa and the like). The mirror silver ink with the dielectric constant and the drawing force has the advantages that when the mirror silver ink is applied to electronic equipment, the influence on frequency attenuation of an antenna of the electronic equipment is small, the risk that the whole machine falls off the ink is low, and the user experience is better.
The description "dielectric constant of ink" and "drawing force of ink" used herein refers to the dielectric constant and the drawing force of the mirror-like silver ink film layer obtained by brushing the mirror-like silver ink on CG glass and baking the mirror-like silver ink film layer at 150 ℃ for 30min, respectively.
In another aspect of the present application, a method of making a specular silver ink is provided. According to an embodiment of the application, the method comprises: carrying out first stirring and mixing on 20-30 parts by weight of diluent and 15-25 parts by weight of resin to obtain a first mixture; carrying out second stirring and mixing on the first mixture, 3-5 parts by weight of curing agent, 1-2 parts by weight of coupling agent, 40-60 parts by weight of electroplated aluminum paste and 1-2 parts by weight of sulfhydryl modified organic silicon to obtain a second mixture; and filtering the second mixture to obtain the mirror silver ink. The method is simple and convenient to operate, easy to control, free of excessive requirements on equipment and technicians, easy to realize industrial production, low in cost and good in economy, the obtained mirror silver ink has a low dielectric constant, the method is suitable for being used in electronic equipment, the influence on frequency attenuation of an antenna of the electronic equipment is small, and the signal transmission quality of the electronic equipment can be improved while the mirror silver appearance effect is realized.
Specifically, the temperature of the first stirring and mixing may be 20 to 45 ℃ (e.g., 20 ℃, 25 ℃, 30 ℃, 35 ℃, 40 ℃, 45 ℃ and the like), and the time is 1 to 1.5 hours (specifically, 1 hour, 1.1 hour, 1.2 hours, 1.3 hours, 1.4 hours, 1.5 hours and the like). Thereby facilitating the dissolution of the resin and the uniform mixing with the diluent. In some embodiments, the diluent and the resin are mixed, and then stirred at a high speed for 1-1.5 hours at a temperature of 20-45 ℃ to dissolve the resin and uniformly mix with the diluent to obtain a first mixture.
Specifically, the second stirring and mixing may be performed at room temperature for 20 to 30 minutes (e.g., 20 minutes, 21 minutes, 22 minutes, 23 minutes, 24 minutes, 25 minutes, 26 minutes, 27 minutes, 28 minutes, 29 minutes, 30 minutes, etc.). Therefore, the components are mixed uniformly. In some embodiments, the latent curing agent, the coupling agent, the mercapto-modified organosilicon, and the electroplated aluminum paste may be sequentially added to the first mixture, and the mixture is stirred and dispersed at a medium speed at room temperature for 20 to 30 minutes until the materials are uniformly mixed and dispersed, so as to obtain a second mixture.
Specifically, can further filter the second mixture to the filtering large granule impurity for be difficult to block up the mesh when screen printing. Specifically, the filtering precision is 50-300 meshes (specifically, 50 meshes, 100 meshes, 150 meshes, 200 meshes, 250 meshes, 300 meshes, etc.). The filtering precision of 50-300 meshes means that a sieve with the pore size of 50-300 meshes is adopted for filtering.
It is understood that the mirror silver ink described herein may be the same as the mirror silver ink described above, and for example, the components, the distribution ratio of the components, the types of the components, the specific parameters, and the like may be the same, and are not described in detail herein.
In another aspect of the present application, an electronic device housing is provided. According to an embodiment of the present application, the electronic device case includes: a housing body; the mirror surface silver ink layer is arranged on at least part of the outer surface of the shell body, and is formed by the mirror surface silver ink or the mirror surface silver ink prepared by the method. The electronic equipment shell has an ideal mirror silver appearance, has small influence on signal transmission of the electronic equipment, and can effectively improve the signal shielding problem.
In yet another aspect of the present application, an electronic device housing is provided. According to an embodiment of the present application, the electronic device case includes a case body; the mirror surface silver ink layer is arranged on at least part of the outer surface of the shell body, and the dielectric constant of the mirror surface silver ink layer is smaller than 2.8. The electronic equipment shell has an ideal mirror silver appearance, has small influence on signal transmission of the electronic equipment, and can effectively improve the signal shielding problem.
Specifically, the material, shape and size of the housing body are not particularly limited, for example, the housing body may be made of glass, ceramic, plastic, etc., and the specific shape and size may be flexibly adjusted and designed according to the actual needs of the electronic device, for example, the housing body may be a 2D structure, a 2.5D structure, a 3D structure, etc., and the size may be 5.8 inches, 6 inches, etc.
In yet another aspect of the present application, an electronic device is provided. According to an embodiment of the present application, the electronic device includes the electronic device case described above, in which an accommodating space is defined; and the display screen is arranged in the accommodating space. The electronic equipment has good mirror silver appearance, high signal transmission quality, small frequency attenuation and better user experience.
It can be understood that specific types of the electronic device include, but are not limited to, a mobile phone, a tablet computer, a wearable device, a game machine, and the like, and besides the aforementioned housing and the display screen, the electronic device may further include necessary structures and components of a conventional electronic device, taking the mobile phone as an example, the electronic device may further include a touch module, a battery, a motherboard, a memory, a fingerprint identification module, a camera module, and the like, and details thereof are not repeated herein.
Embodiments of the present application are described in detail below.
Example 1
The formula of the printing ink is as follows: 20 parts by weight of saturated polyester resin (weight average Molecular Weight (MW))15000, acid value of 1mgKOH/g and hydroxyl value of 7mgKOH/g), 25 parts by weight of diluent (isophorone), 5 parts by weight of blocked isocyanate curing agent (Japanese Asahi chemical formula MF-K60X), 1 part by weight of coupling agent (KBM-403), 1 part by weight of mercapto-modified silicone (DC-201), 40 parts by weight of electroplated aluminum paste (the particle diameter of aluminum particles is 4-6 micrometers), and 8 parts by weight of electroplated aluminum paste (the particle diameter of spherical aluminum particles is 1-2 micrometers).
The preparation method comprises the following steps: firstly, mixing a diluent and resin, stirring at a high speed for 1-1.5 hours at a temperature of 20-45 ℃ to dissolve the resin, uniformly mixing with the diluent to obtain a mixed material, after the mixed material is finished, sequentially adding a latent curing agent, a coupling agent, sulfydryl modified organic silicon and electroplated aluminum paste, stirring and dispersing at a medium speed at room temperature for 20-30 minutes until all the materials are uniformly mixed and dispersed, and filtering with a filtering precision of 50-300 meshes to obtain the low dielectric constant mirror silver ink.
After being brushed on CG glass, the mirror silver ink is baked for × 30min at 150 ℃ to obtain a mirror silver ink film layer, and relevant performances are tested, wherein the test method comprises the following steps:
adhesion force: adopting a Baige adhesion test method;
drawing force: after the fullerene 8730B glue is dotted on the mirror-surface silver ink film layer to be fully cured, drawing the mirror-surface silver ink film layer to the maximum falling value by using a tension meter, and dividing the maximum falling value by the area of the glue line;
dielectric constant: the test is carried out by using a GB7265.1-87 perturbation method.
Alcohol wiping: dipping alcohol (the concentration is more than 99.5%) on the dust-free cloth, wiping the surface of the mirror surface silver ink film layer back and forth with the force of 6N-12N, wherein the back and forth times are at least 10 cycles, and the mirror surface silver ink film layer can not have bubbles, cracks and obviously falls off; slight discoloration, discoloration and other appearance defects (the front surface cannot be seen to be transparent and different in color) are allowed.
High temperature and high humidity: temperature: 65. + -. 1 ℃ humidity: standing for 48H under 91-95% RH, recovering for 2H at normal temperature, observing, and performing adhesion and drawing tests. The passing conditions are as follows: 1) the appearance is not abnormal; 2) the adhesive force reaches 4B; 3) no bubble is formed on the surface of the edge ink film layer, and the edge ink film layer falls off; 4) the drawing force is more than or equal to 16N.
And (3) high-temperature storage: and (3) placing the product at 85 +/-2 ℃ for 72 hours, taking out the product, placing the product under natural conditions for at least 2 hours, observing and performing an adhesion test, a product edge spraying surface adhesion test (sticking the edge spraying surface and a side straight surface by using 3M610 adhesive tape, extruding bubbles, carrying out static pressure for more than 5 seconds, keeping the product still, rapidly pulling up the single side of the adhesive tape at an angle of 90 degrees, and repeating for 1 time) and a pull-out force test. The passing conditions are as follows: 1) the appearance is not abnormal; 2) the adhesive force reaches 4B; 3) no bubble is formed on the surface of the edge ink film layer, and the edge ink film layer falls off; 4) the drawing force is more than or equal to 16N.
And (3) low-temperature storage: the difference is that the storage temperature is-40 +/-2 ℃ as the high-temperature storage. The passing conditions are as follows: 1) the appearance is not abnormal; 2) no bubble is formed on the surface of the edge ink film layer, and the edge ink film layer falls off; 3) the drawing force is more than or equal to 16N.
Cold and hot impact: the low temperature is minus 40 ℃ plus or minus 2 ℃/1h, the high temperature is transferred to 75 ℃ plus or minus 2 ℃/1h within 1min as a cycle, 20 cycles are carried out, the normal temperature is recovered for 2h for inspection, and adhesion and drawing force tests are carried out. The passing conditions are as follows: 1) the appearance is not abnormal; 2) the surface edge of the ink film layer has no bubble and no drop in the adhesion test of the spraying surface and the side straight body surface; 3) the drawing force is more than or equal to 16N.
Ultraviolet aging:
artificial sweat resistance: preparing a solution according to the manual sweat preparation instruction, wherein the pH value is 4.6 +/-0.1, attaching a dust-free cloth for soaking the solution on the surface of a sample, sealing the surface of the sample by using a sealing rubber bag, storing the sample in a constant-temperature constant-humidity box for 48 hours (the temperature is 55 +/-1 ℃, and the humidity is 93 +/-2 percent RH), wiping the solution on the surface of the sample, standing for 2 hours, observing, and performing an adhesion test and a pull-out force test. The passing conditions are as follows: 1) the appearance is not abnormal; 2) the surface edge of the ink film layer has no bubble and no drop in the adhesion test of the spraying surface and the side straight body surface; 3) the drawing force is more than or equal to 16N.
Cosmetic resistance: the sample was first wiped clean with cotton cloth, samples of NIVEA sunscreen oil (SPF30), NIVEA hand cream were applied to the front of the sample, 2 samples were applied to each cosmetic, and then the samples were dried at temperature: 55. + -.1 ℃ humidity: and (3) standing for 24h under the condition of 93 +/-2% RH, recovering at least 2h at normal temperature, checking the appearance, and testing the adhesive force and the drawing force. The passing conditions are as follows: 1) the appearance is not abnormal; 2) the surface edge of the ink film layer has no bubble and no drop in the adhesion test of the spraying surface and the side straight body surface; 3) the drawing force is more than or equal to 16N.
Boiling test: boiling in water at 80 deg.C for 30min, drying with dust-free cloth, recovering at room temperature for at least 2 hr, inspecting appearance, and testing adhesion and pull force. The passing conditions are as follows: 1) the appearance is not abnormal; 2, the adhesive force reaches 4B; 3) no bubble is formed on the surface of the edge spraying ink film layer, and the edge spraying ink film layer falls off; 4) the drawing force is more than or equal to 16N.
And (3) testing results:
adhesion force: not less than 4B;
drawing force: 28.5 MPa.
Dielectric constant: 2.67
The reliability of the whole set of mobile phone: alcohol wiping, high temperature and high humidity, high temperature storage, low temperature storage, cold and hot shock, ultraviolet aging, artificial sweat resistance, cosmetic resistance and water boiling test all pass.
Example 2
The formula of the printing ink is as follows: 20 parts of acrylic resin (MW12000, the acid value of 1mgKOH/g and the hydroxyl value of 6mgKOH/g), 25 parts of diluent (isophorone), 5 parts of blocked isocyanate curing agent (Japanese Asahi chemical product MF-K60X), 1 part of coupling agent (KBM-403), 1 part of mercapto-modified organic silicon (DC-201), 40 parts of electroplated aluminum paste (the particle size of aluminum particles is 4-6 micrometers) and 8 parts of electroplated aluminum paste (the particle size of spherical aluminum particles is 1-2 micrometers).
The preparation method and the performance test method are the same as example 1.
And (3) testing results:
adhesion force: not less than 4B
Drawing force: 25.12Mpa
Dielectric constant: 2.53
The reliability of the whole set of mobile phone: alcohol wiping, high temperature and humidity, high temperature storage, low temperature storage, cold and hot shock, ultraviolet aging, artificial sweat resistance, cosmetics resistance and water boiling resistance.
Example 3
The formula of the printing ink is as follows: 20 parts of saturated polyester resin (MW7000, the acid value of 1mgKOH/g, the hydroxyl value of 7mgKOH/g), 25 parts of diluent (isophorone), 5 parts of blocked isocyanate curing agent (Japanese Asahi chemical product MF-K60X), 1 part of coupling agent (KBM-403), 1 part of mercapto-modified organic silicon (DC-201), 40 parts of electroplated aluminum paste (the particle size of aluminum particles is 4-6 micrometers), and 8 parts of electroplated aluminum paste (the particle size of spherical aluminum particles is 1-2 micrometers).
The preparation method and the performance test method are the same as example 1.
And (3) testing results:
adhesion force: not less than 4B
Drawing force: 23.8Mpa
Dielectric constant: 2.67
The reliability of the whole set of mobile phone: alcohol wiping, high-temperature storage, low-temperature storage, cold and hot shock, ultraviolet aging, artificial sweat resistance and cosmetics resistance, and high temperature, high humidity and water boiling do not pass.
Example 4
The formula of the printing ink is as follows: 20 parts of saturated polyester resin (MW16000, the acid value of 1mgKOH/g and the hydroxyl value of 0mgKOH/g), 25 parts of diluent (isophorone), 5 parts of blocked isocyanate curing agent (Japanese Asahi chemical product MF-K60X), 1 part of coupling agent (KBM-403), 1 part of mercapto-modified organosilicon (DC-201) and 48 parts of electroplated aluminum silver paste (the particle size of aluminum particles is 4-6 microns).
The preparation method and the performance test method are the same as example 1.
And (3) testing results:
adhesion force: not less than 4B
Drawing force: 17.89Mpa
Dielectric constant: 2.7
The reliability of the whole set of mobile phone: alcohol wiping, high temperature and humidity, high temperature storage, low temperature storage, cold and hot shock, ultraviolet aging, artificial sweat resistance, cosmetics resistance and water boiling resistance.
Comparative example 1
The formula of the printing ink is as follows: 20.5 parts by weight of saturated polyester resin (MW15000, acid value of 1mgKOH/g, hydroxyl value of 7mgKOH/g), 25.5 parts by weight of diluent (isophorone), 5 parts by weight of blocked isocyanate curing agent (Japanese Asahi chemical product MF-K60X), 1 part by weight of coupling agent (KBM-403), 40 parts by weight of electroplated aluminum paste (the particle size of aluminum particles is 4-6 micrometers), and 8 parts by weight of electroplated aluminum paste (the particle size of spherical aluminum particles is 1-2 micrometers).
The preparation method and the performance test method are the same as example 1.
And (3) testing results:
adhesion force: not less than 4B
Drawing force: 28.9Mpa
Dielectric constant: 3.9
The reliability of the whole set of mobile phone: alcohol wiping, high temperature and humidity, high temperature storage, low temperature storage, cold and hot shock, ultraviolet aging, artificial sweat resistance, cosmetics resistance and water boiling resistance.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 invention. 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 invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (12)
1. A specular silver ink, comprising:
15-25 parts of resin;
20-30 parts of diluent;
3-5 parts of a curing agent;
1-2 parts of a coupling agent;
40-60 parts of electroplated aluminum paste; and
1-2 parts of sulfydryl modified organosilicon.
2. The specular silver ink of claim 1, wherein the resin satisfies at least one of the following conditions:
the weight average molecular weight is 8000-20000;
the hydroxyl value is 4-10 mgKOH/g;
the acid value is less than 2 mgKOH/g.
3. The specular silver ink of claim 1, wherein the diluent has a boiling point of 190 ℃ to 240 ℃.
4. The specular silver ink according to claim 1, wherein the particle size of the aluminum particles in the electroplated aluminum paste is 1 to 6 μm;
preferably, the aluminum ions comprise first aluminum particles and second aluminum particles, the particle size of the first aluminum particles is 4-6 μm, and the particle size of the second aluminum particles is 1-2 μm;
preferably, the second aluminum particles are spherical aluminum particles.
5. The specular silver ink of claim 1, wherein at least one of the following conditions is satisfied:
the resin comprises at least one of acrylic resin and saturated polyester resin;
the diluent comprises at least one of an ester organic solvent and a ketone organic solvent, preferably isophorone;
the curing agent comprises a latent curing agent comprising a blocked isocyanate curing agent;
the coupling agent is a silane coupling and sealing agent, preferably a silane coupling agent having a predetermined substituent including at least one of an isocyanate group and an epoxy group;
the electroplated aluminum paste comprises vacuum electroplated aluminum paste with the mass concentration of 10-15%.
6. The specular silver ink of claim 1, wherein at least one of the following conditions is satisfied:
the dielectric constant is less than 2.8;
the drawing force is more than 20 MPa.
7. A method of making a specular silver ink, comprising:
carrying out first stirring and mixing on 20-30 parts by weight of diluent and 15-25 parts by weight of resin to obtain a first mixture;
carrying out second stirring and mixing on the first mixture, 3-5 parts by weight of curing agent, 1-2 parts by weight of coupling agent, 40-60 parts by weight of electroplated aluminum paste and 1-2 parts by weight of sulfhydryl modified organic silicon to obtain a second mixture;
and filtering the second mixture to obtain the mirror silver ink.
8. The method of claim 7, wherein at least one of the following conditions is satisfied:
the first stirring and mixing temperature is 20-45 ℃, and the time is 1-1.5 hours;
the temperature of the second stirring and mixing is room temperature, and the time is 20-30 minutes;
the precision of the filtration is 50-300 meshes.
9. The method according to claim 7, wherein the specular silver ink is as defined in any one of claims 1 to 6.
10. An electronic device housing, comprising:
a housing body; and
the mirror silver ink layer is arranged on at least part of the outer surface of the shell body, and is formed by the mirror silver ink according to any one of claims 1 to 6 or the mirror silver ink prepared by the method according to any one of claims 7 to 9.
11. An electronic device housing, comprising:
a housing body; and
the mirror surface silver ink layer is arranged on at least part of the outer surface of the shell body, and the dielectric constant of the mirror surface silver ink layer is smaller than 2.8.
12. An electronic device, comprising:
the electronic device enclosure of claim 10 or 11, defining a containment space therein; and
the display screen is arranged in the accommodating space.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010385029.1A CN111500109A (en) | 2020-05-09 | 2020-05-09 | Mirror silver ink, preparation method thereof and electronic equipment shell |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010385029.1A CN111500109A (en) | 2020-05-09 | 2020-05-09 | Mirror silver ink, preparation method thereof and electronic equipment shell |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023229402A1 (en) * | 2022-05-25 | 2023-11-30 | 삼성전자주식회사 | Electronic device and electronic device housing structure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105153800A (en) * | 2015-07-08 | 2015-12-16 | 合肥旭阳铝颜料有限公司 | One-component mirror surface sliver ink |
| CN110191604A (en) * | 2019-06-27 | 2019-08-30 | Oppo广东移动通信有限公司 | Housing unit and preparation method thereof, electronic equipment |
-
2020
- 2020-05-09 CN CN202010385029.1A patent/CN111500109A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105153800A (en) * | 2015-07-08 | 2015-12-16 | 合肥旭阳铝颜料有限公司 | One-component mirror surface sliver ink |
| CN110191604A (en) * | 2019-06-27 | 2019-08-30 | Oppo广东移动通信有限公司 | Housing unit and preparation method thereof, electronic equipment |
Non-Patent Citations (4)
| Title |
|---|
| 刘全香主编: "《信息记录材料》", 30 November 2014, 印刷工业出版社 * |
| 刘盈等: "低介电聚苯并恶嗪的研究进展", 《热固性树脂》 * |
| 周文英等: "《新峪炼焦煤中有机硫的赋存及硫醚硫醇类有机硫的微波响应研究》", 30 June 2017, 中国矿业大学出版社 * |
| 陈健健等: "侧链含POSS基团环氧树脂低介电杂化材料的制备及其性能研究", 《第二届全国先进复合材料科学与应用学术研讨会摘要集》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023229402A1 (en) * | 2022-05-25 | 2023-11-30 | 삼성전자주식회사 | Electronic device and electronic device housing structure |
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