CN114106673A - Shell, shell preparation method and electronic equipment - Google Patents
Shell, shell preparation method and electronic equipment Download PDFInfo
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- CN114106673A CN114106673A CN202010899518.9A CN202010899518A CN114106673A CN 114106673 A CN114106673 A CN 114106673A CN 202010899518 A CN202010899518 A CN 202010899518A CN 114106673 A CN114106673 A CN 114106673A
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- 238000002360 preparation method Methods 0.000 title abstract description 12
- 239000011248 coating agent Substances 0.000 claims abstract description 158
- 238000000576 coating method Methods 0.000 claims abstract description 158
- 238000005187 foaming Methods 0.000 claims abstract description 130
- 239000001301 oxygen Substances 0.000 claims abstract description 82
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 82
- 239000010410 layer Substances 0.000 claims abstract description 59
- 239000000758 substrate Substances 0.000 claims abstract description 44
- 239000011247 coating layer Substances 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 24
- -1 oxygen ion Chemical class 0.000 claims description 87
- 239000007822 coupling agent Substances 0.000 claims description 55
- 239000006260 foam Substances 0.000 claims description 54
- 239000003795 chemical substances by application Substances 0.000 claims description 46
- 239000000243 solution Substances 0.000 claims description 41
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 40
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 39
- OBNDGIHQAIXEAO-UHFFFAOYSA-N [O].[Si] Chemical compound [O].[Si] OBNDGIHQAIXEAO-UHFFFAOYSA-N 0.000 claims description 38
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 35
- 239000003381 stabilizer Substances 0.000 claims description 29
- 239000002562 thickening agent Substances 0.000 claims description 26
- 229920002635 polyurethane Polymers 0.000 claims description 24
- 239000004814 polyurethane Substances 0.000 claims description 24
- 239000002335 surface treatment layer Substances 0.000 claims description 24
- 239000002994 raw material Substances 0.000 claims description 22
- 239000007864 aqueous solution Substances 0.000 claims description 18
- 238000001035 drying Methods 0.000 claims description 16
- 239000000377 silicon dioxide Substances 0.000 claims description 14
- 239000012756 surface treatment agent Substances 0.000 claims description 12
- 125000000129 anionic group Chemical group 0.000 claims description 8
- 125000002091 cationic group Chemical group 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000000839 emulsion Substances 0.000 claims description 6
- LYRFLYHAGKPMFH-UHFFFAOYSA-N octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(N)=O LYRFLYHAGKPMFH-UHFFFAOYSA-N 0.000 claims description 6
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- XDLMVUHYZWKMMD-UHFFFAOYSA-N 3-trimethoxysilylpropyl 2-methylprop-2-enoate Chemical compound CO[Si](OC)(OC)CCCOC(=O)C(C)=C XDLMVUHYZWKMMD-UHFFFAOYSA-N 0.000 claims description 4
- 239000011022 opal Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
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- HQYALQRYBUJWDH-UHFFFAOYSA-N trimethoxy(propyl)silane Chemical compound CCC[Si](OC)(OC)OC HQYALQRYBUJWDH-UHFFFAOYSA-N 0.000 claims description 3
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- 229920000915 polyvinyl chloride Polymers 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
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- 230000008569 process Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
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- 238000010586 diagram Methods 0.000 description 2
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- 239000004744 fabric Substances 0.000 description 2
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- 229920000555 poly(dimethylsilanediyl) polymer Polymers 0.000 description 2
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- ROSDSFDQCJNGOL-UHFFFAOYSA-N protonated dimethyl amine Natural products CNC ROSDSFDQCJNGOL-UHFFFAOYSA-N 0.000 description 2
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- 239000000126 substance Substances 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
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- 229910001882 dioxygen Inorganic materials 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
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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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/042—Coating with two or more layers, where at least one layer of a composition contains a polymer binder
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/009—Use of pretreated compounding ingredients
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2383/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2383/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2475/04—Polyurethanes
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Inorganic Chemistry (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The present application provides a housing comprising: a substrate layer; and a foaming coating layer formed on one side surface of the base material layer; the foamed coating includes a negative oxygen ion generator. A preparation method of the shell and the electronic device are also provided.
Description
Technical Field
The application relates to the technical field of electronics, in particular to a shell, a shell manufacturing method and electronic equipment.
Background
The negative oxygen ion is a kind of negative ion formed by oxygen gas obtaining free electrons generated by ionization of molecules in air under the action of high pressure or strong rays; medical research finds that the negative oxygen ions can relax bronchial smooth muscle, improve the function of a heart-lung system and improve the working efficiency; the shell capable of releasing negative oxygen ions in the industry at present is hard in texture, lacks certain softness and is poor in touch when being held by hands; in addition, a shell which is soft in hand feeling and can release negative oxygen ions continuously and efficiently and a preparation method thereof are lacked in the market.
Disclosure of Invention
In order to solve the problems, the application provides a shell, a shell preparation method and an electronic device, wherein the shell has a softer texture and can continuously and efficiently release negative oxygen ions.
The application provides a housing, including: a substrate layer; and a foaming coating layer formed on one side surface of the base material layer; the foamed coating includes a negative oxygen ion generator.
The application also provides a preparation method of the shell, which comprises the following steps: providing a substrate layer; providing a foaming coating, and forming the foaming coating on one side surface of the substrate layer; wherein the foaming coating comprises a negative oxygen ion generator; and drying the foaming coating to form a foaming coating on the surface of the base material layer, thereby obtaining the shell.
The present application further provides an electronic device comprising a housing as described above.
In the shell, the shell preparation method and the electronic equipment, the foam coating is formed on one side surface of the substrate layer, so that the shell is soft in texture and good in hand-held touch feeling; in addition, in the shell of the application, the foaming coating can continuously release negative oxygen ions, and is beneficial to the mind and body of a carrier.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic cross-sectional structural diagram of a housing according to a first embodiment of the present application.
Fig. 2 is a schematic flow chart of a method for manufacturing a housing according to a second embodiment of the present disclosure.
Fig. 3 is a schematic flow chart of a method for preparing a foaming coating material according to a second embodiment of the present application.
Fig. 4 is a schematic structural diagram of an electronic device according to a third embodiment of the present application.
Detailed Description
In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.
It should be noted that, for convenience of description, like reference numerals denote like parts in the embodiments of the present application, and a detailed description of the like parts is omitted in different embodiments for the sake of brevity.
A first embodiment of the present application provides a housing comprising a substrate layer; the foaming coating is formed on one side surface of the base material layer; the foamed coating includes a negative oxygen ion generator.
In the shell in the embodiment of the application, the foaming coating is formed on one side surface of the substrate layer, so that the shell is soft in texture and good in hand-held touch feeling; in addition, in the shell of the application, the foaming coating can continuously release negative oxygen ions, and is beneficial to the mind and body of a carrier.
Referring to fig. 1, a housing 100 according to a first embodiment of the present disclosure is provided, where the housing 100 includes a substrate layer 10 and a foam coating layer 20.
The material of the substrate layer 10 may be silica gel, plastic, metal, ceramic or composite material, so that the application range is very wide.
In some embodiments, the material of the substrate layer 10 may be a resin, such as polyethylene resin (PE), polypropylene resin (PP), polyethylene terephthalate resin (PET), polyvinyl chloride resin (PVC), polycarbonate resin (PC), polymethyl methacrylate (PMMA), or a composite thereof.
In some embodiments, the foam coating layer 20 is formed on one surface of the substrate layer 10.
In other embodiments, the foam coating layer 20 may also be formed on two opposite surfaces of the substrate layer 10.
In the application, the foaming coating contains a negative oxygen ion generator, so that oxygen molecules in the air can be continuously and efficiently converted into negative oxygen ions, the chemical property of the foaming coating is stable, and harmful substances cannot be generated by hydrolysis.
The negative oxygen ion generating agent can be a polycrystalline silicon compound or opal and the like which can generate negative oxygen ions through an ionization effect, and also can be diatom ooze and the like which can generate negative oxygen ions through a waterfall effect; wherein, the ionization effect means that few radioactive elements in the polycrystalline silicon carbide can react with air molecules contacting the surface of the rare-earth spar to force charged particles in oxygen molecules to be stripped from the oxygen molecules, thereby achieving the purpose of releasing negative oxygen ions; the waterfall effect means that the absorption and the release of the water can generate the waterfall effect to decompose water molecules into positive and negative oxygen ions.
In some preferred embodiments, the negative oxygen ion generator is one or more of polycrystalline silicon carbide, opal, or diatom ooze.
In the present application, the foam coating 20 is formed with uniform cells, so that a user can be given a better hand feeling; the negative oxygen ion generating agent is fixedly carried in the foam pores of the foaming coating, so that the specific surface area of the negative oxygen ion generating agent is larger, and the efficiency of releasing negative oxygen ions is higher; herein, the negative oxygen ion release amount of the foamed coating layer may be measured as a concentration of negative oxygen ions at a distance of 5 cm from the foamed coating layer, and specifically, the concentration of negative oxygen ions at a distance of 5 cm from the foamed coating layer is 2000 to 20000 per cubic cm.
In some embodiments, the foamed coating is prepared from raw materials comprising: a negative oxygen ion generator; an aqueous solution of a silica coupling agent; aqueous polyurethane; and a foam stabilizer.
In some embodiments, the silicone coupling agent is selected from any one or more of gamma-aminopropyltriethoxysilane (KH550), 3- (2, 3-glycidoxy) propyltrimethoxysilane (KH560), gamma- (methacryloyloxy) propyltrimethoxysilane (KH 570).
In some embodiments, the foam stabilizer is selected from any one or more of stearamide emulsions, silicone polyether emulsions, alkyl dimethyl amine oxides.
In some embodiments, in the raw material for forming the foaming coating layer, the negative oxygen ion generator is mixed with the silicon-oxygen coupling agent aqueous solution to form a silicon-oxygen coupling agent solution of the negative oxygen ion generator, wherein the content of the negative oxygen ion generator in the silicon-oxygen coupling agent solution of the negative oxygen ion generator is in the range of 10% to 20%; the content ratio of the silicon-oxygen coupling agent solution of the negative oxygen ion generating agent in the raw material for forming the foaming coating ranges from 1% to 20%; the content of the waterborne polyurethane in the raw materials for forming the foaming coating ranges from 70% to 80%; the content of the foam stabilizer in the raw materials for forming the foaming coating ranges from 3% to 5%.
The concentration of the released negative oxygen ions can be adjusted by controlling the addition amount of the negative oxygen ion generating agent, so that the requirements of users on different occasions can be met.
In some embodiments, the foam coating layer 20 is obtained by mixing the above raw materials to form a foam coating material, coating the foam coating material on the surface of the substrate layer 10, and drying the foam coating material at a certain temperature.
In some embodiments, the optional range of the drying temperature may be 80 to 120 ℃.
In some embodiments, the raw material forming the foamed coating further comprises a thickener; the content of the thickening agent in the raw materials for forming the foaming coating ranges from 0.5% to 1.5%; the thickener may be an aqueous thickener.
In some embodiments, the raw materials forming the foamed coating further comprise a leveling agent; the content of the leveling agent in the raw materials for forming the foaming coating ranges from 0.2% to 0.5%; the leveling agent can be selected from one or more of silicone oil, polydimethylsiloxane, polydimethylsilane, polyether or polyester modified organic siloxane and acrylate.
In some embodiments, the raw materials forming the foamed coating further comprise a color paste; the content of the color paste in the raw materials for forming the foaming coating ranges from 1% to 2%.
In some embodiments, as shown in fig. 1, the surface of the foam coating layer 20 away from the substrate layer 10 is further formed with a surface treatment layer 30; the surface treatment layer 30 is used to improve the surface wear resistance and scratch resistance of the foamed coating 20.
In some embodiments, the surface treatment layer 30 is dried from an aqueous anionic surface treatment agent, an aqueous cationic surface treatment agent, or an aqueous nonionic surface treatment agent.
In some embodiments, the solids content of the aqueous anionic surface treatment, aqueous cationic surface treatment, and aqueous nonionic surface treatment is from 10% to 20%.
In some embodiments, the surface treatment layer 30 is formed on the surface of the foam coating layer 20 by spraying or silk-screening; the resin system of the surface treatment layer 30 is made of polyurethane resin with good flexibility, the spraying amount of the surface treatment layer 30 is 2 grams per square meter to 3 grams per square meter, and the curing mode of the surface treatment layer is about 100 ℃ for drying for about 5 minutes.
The surface softness of the shell can reach more than 6.8 (obtained by testing by an ST-300 coating fabric softness tester), and the peel strength of the foam coating 20 and the substrate layer is more than 50 newtons per square centimeter, so that the bonding force between the foam coating 20 and the substrate layer 10 is very good; in addition, the water-based paint is adopted, and the using process does not cause harm to human bodies and the environment.
Referring to fig. 2, a second embodiment of the present application provides a method for manufacturing a housing, including:
s201, providing a substrate layer;
s202, providing a foaming coating, and forming the foaming coating on one side surface of the substrate layer; wherein the foaming coating comprises a negative oxygen ion generator; and
s203, drying the foaming coating to form a foaming coating on the surface of the base material layer, and obtaining the shell.
In some embodiments, the foaming coating material may be uniformly formed on one side surface of the substrate layer by coating, spraying, printing, knife coating, or the like.
In some embodiments, the optional range of the drying temperature for drying the foamed coating may be 80 to 120 degrees celsius.
The material of the substrate layer can be silica gel, plastic, metal, ceramic or composite materials and the like, so that the application range is very wide.
In some embodiments, the material of the substrate layer 10 may be a resin, such as polyethylene resin (PE), polypropylene resin (PP), polyethylene terephthalate resin (PET), polyvinyl chloride resin (PVC), polycarbonate resin (PC), polymethyl methacrylate (PMMA), or a composite thereof.
In other embodiments, the foam coating layer may also be formed on two opposite surfaces of the substrate layer.
In the application, the obtained foaming coating forms uniform foam holes, so that a user can be endowed with better hand feeling; the negative oxygen ion generating agent is fixedly carried in the foam pores of the foaming coating, so that the specific surface area of the negative oxygen ion generating agent is larger, and the efficiency of releasing negative oxygen ions is higher.
The concentration of the released negative oxygen ions can be adjusted by controlling the addition amount of the negative oxygen ion generating agent, so that the requirements of users on different occasions can be met.
In some embodiments, the negative oxygen ion generator is one or more of polycrystalline silicon carbide, opal, or diatom ooze.
In some embodiments, the foaming coating comprises the following components:
a negative oxygen ion generator;
an aqueous solution of a silica coupling agent;
aqueous polyurethane; and
a foam stabilizer.
In some embodiments, the silicone coupling agent is selected from any one or more of gamma-aminopropyltriethoxysilane (KH550), 3- (2, 3-glycidoxy) propyltrimethoxysilane (KH560), gamma- (methacryloyloxy) propyltrimethoxysilane (KH 570).
In some embodiments, the foam stabilizer is selected from any one or more of stearamide emulsions, silicone polyether emulsions, alkyl dimethyl amine oxides.
In some embodiments, the foamed coating further comprises a thickener, a leveling agent, and a color paste.
In some embodiments, the thickener may be an aqueous thickener.
In some embodiments, the leveling agent may be selected from one or more of silicone oils, polydimethylsiloxanes, polydimethylsilanes, polyether or polyester modified organosiloxanes, acrylates.
In some embodiments, referring to fig. 3, the method for preparing the foaming coating includes the steps of:
s2021, dispersing the negative oxygen ion generator in the silicon-oxygen coupling agent aqueous solution to obtain a silicon-oxygen coupling agent solution of the negative oxygen ion generator;
s2022, mixing and stirring a silicon-oxygen coupling agent solution of a negative oxygen ion generating agent, the waterborne polyurethane, the foam stabilizer, the thickening agent, the leveling agent and the color paste to obtain the foaming coating.
In some embodiments, the negative oxygen ion generator may be uniformly dispersed in the aqueous silica coupling agent solution by means of ultrasonic dispersion or high-speed stirring dispersion.
In some embodiments, the viscosity of the foamed coating obtained by mixing and stirring at 25 ℃ is 500 pa sec to 2000 pa sec, and the foaming ratio is 1 to 5 times.
In some embodiments, the negative oxygen ion generator is present in the silica coupling agent solution of the negative oxygen ion generator in an amount ranging from 10% to 20%; the content of the silicon-oxygen coupling agent solution of the negative oxygen ion generator in the foaming coating ranges from 1% to 20%; the content of the waterborne polyurethane in the foaming coating ranges from 70% to 80%; the content of the foam stabilizer in the foaming coating ranges from 3% to 5%; the content of the thickening agent in the foaming coating ranges from 0.5% to 1.5%; the content of the leveling agent in the foaming coating ranges from 0.2% to 0.5%; the content of the color paste in the foaming coating ranges from 1% to 2%.
In some embodiments, referring to fig. 2, the method for preparing the housing further includes the steps of:
and S204, forming a surface treatment layer on the surface of the foaming coating layer far away from the base material layer.
In some embodiments, an aqueous anionic surface treatment agent, an aqueous cationic surface treatment agent or an aqueous nonionic surface treatment agent may be sprayed on the surface of the foamed coating layer, followed by drying to obtain the surface treatment layer.
Wherein the surface treatment layer is used for improving the surface wear resistance and scratch resistance of the foaming coating.
In some embodiments, the solids content of the aqueous anionic surface treatment, aqueous cationic surface treatment, and aqueous nonionic surface treatment is from 10% to 20%.
In some embodiments, the surface treatment layer is formed on the surface of the foaming coating layer by spraying or silk-screen printing; the resin system of the surface treatment layer is made of polyurethane resin with good flexibility, the spraying amount of the surface treatment layer is 2-3 grams per square meter, and the surface treatment layer is dried for 5 minutes at the temperature of 100 ℃.
As shown in fig. 4, the third embodiment of the present application further provides an electronic device 200, where the electronic device 200 includes the housing 100 according to the first embodiment of the present application.
In some embodiments, the housing 100 may be, for example, a battery back cover of the electronic device 200.
In some embodiments, the electronic device 200 is a portable, mobile computing device, wearable device, etc., such as a smartphone, laptop, tablet, gaming device, etc.
The foam coating and the housing of the present invention will be described with reference to specific examples.
Example 1
Providing a substrate layer, wherein the substrate layer is made of silica gel; providing a foaming coating, and forming the foaming coating on one side surface of the substrate layer, wherein the foaming coating comprises the following components: polycrystalline silicon carbide, a silica coupling agent aqueous solution, waterborne polyurethane, a foam stabilizer, a thickening agent, a leveling agent and color paste; and drying the foaming coating to form a foaming coating on the surface of the base material layer, thereby obtaining the shell.
The preparation method of the foaming coating comprises the following steps: dispersing the polycrystalline silicon carbide in the silicon-oxygen coupling agent aqueous solution to obtain a silicon-oxygen coupling agent solution of the polycrystalline silicon carbide; and mixing and stirring a silicon-oxygen coupling agent solution of polycrystalline silicon carbide, aqueous polyurethane, a foam stabilizer, a thickening agent, a flatting agent and color paste to obtain the foaming coating.
Wherein the content range of the polycrystalline silicon carbide in the silicon-oxygen coupling agent solution of the polycrystalline silicon carbide is 10 percent; the content of the silicon-oxygen coupling agent solution of the polycrystalline silicon carbide in the foaming coating is within 15 percent; the content of the waterborne polyurethane in the foaming coating is 80 percent; the content of the foam stabilizer in the foaming coating is 3%; the content of the thickening agent in the foaming coating is 0.5%; the content of the leveling agent in the foaming coating is 0.5%; the content of the color paste in the foaming coating is 1 percent.
The case of example 1 was subjected to softness test, negative oxygen ion test, and surface roughness test.
Example 2
Providing a substrate layer, wherein the substrate layer is made of silica gel; providing a foaming coating, and forming the foaming coating on one side surface of the substrate layer, wherein the foaming coating comprises the following components: polycrystalline silicon carbide, a silica coupling agent aqueous solution, waterborne polyurethane, a foam stabilizer, a thickening agent, a leveling agent and color paste; and drying the foaming coating to form a foaming coating on the surface of the base material layer, thereby obtaining the shell.
The preparation method of the foaming coating comprises the following steps: dispersing the polycrystalline silicon carbide in the silicon-oxygen coupling agent aqueous solution to obtain a silicon-oxygen coupling agent solution of the polycrystalline silicon carbide; and mixing and stirring a silicon-oxygen coupling agent solution of polycrystalline silicon carbide, aqueous polyurethane, a foam stabilizer, a thickening agent, a flatting agent and color paste to obtain the foaming coating.
Wherein the content range of the polycrystalline silicon carbide in the silicon-oxygen coupling agent solution of the polycrystalline silicon carbide is 15%; the content of the silicon-oxygen coupling agent solution of the polycrystalline silicon carbide in the foaming coating is 20 percent; the content of the waterborne polyurethane in the foaming coating is 72%; the content of the foam stabilizer in the foaming coating is 4%; the content of the thickening agent in the foaming coating ranges from 1.5%; the content of the leveling agent in the foaming coating is 0.5%; the content of the color paste in the foaming coating is within 2 percent.
The case of example 1 was subjected to softness test, negative oxygen ion test, and surface roughness test.
Example 3
Providing a substrate layer, wherein the substrate layer is made of silica gel; providing a foaming coating, and forming the foaming coating on one side surface of the substrate layer, wherein the foaming coating comprises the following components: polycrystalline silicon carbide, a silica coupling agent aqueous solution, waterborne polyurethane, a foam stabilizer, a thickening agent, a leveling agent and color paste; drying the foaming coating to form a foaming coating on the surface of the substrate layer; and forming a surface treatment layer on the surface of the foaming coating to obtain the shell.
The preparation method of the foaming coating comprises the following steps: dispersing the polycrystalline silicon carbide in the silicon-oxygen coupling agent aqueous solution to obtain a silicon-oxygen coupling agent solution of the polycrystalline silicon carbide; and mixing and stirring a silicon-oxygen coupling agent solution of polycrystalline silicon carbide, aqueous polyurethane, a foam stabilizer, a thickening agent, a flatting agent and color paste to obtain the foaming coating.
Wherein the content range of the polycrystalline silicon carbide in the silicon-oxygen coupling agent solution of the polycrystalline silicon carbide is 10 percent; the content of the silicon-oxygen coupling agent solution of the polycrystalline silicon carbide in the foaming coating is within 15 percent; the content of the waterborne polyurethane in the foaming coating is 80 percent; the content of the foam stabilizer in the foaming coating is 3%; the content of the thickening agent in the foaming coating is 0.5%; the content of the leveling agent in the foaming coating is 0.5%; the content of the color paste in the foaming coating is 1 percent.
The surface treatment layer is formed on the surface of the foaming coating by spraying, the resin system of the surface treatment layer is made of polyurethane resin with good flexibility, the spraying amount of the surface treatment layer is 2-3 grams per square meter, and the surface treatment layer is dried for 5 minutes at the temperature of 100 ℃.
The case of example 3 was subjected to softness test, negative oxygen ion test, and surface roughness test.
Comparative example 1
Providing a substrate layer, wherein the substrate layer is made of silica gel; providing a foaming coating, and forming the foaming coating on one side surface of the substrate layer, wherein the foaming coating comprises the following components: polycrystalline silicon carbide, a silica coupling agent aqueous solution, waterborne polyurethane, a foam stabilizer, a thickening agent, a leveling agent and color paste; and drying the foaming coating to form a foaming coating on the surface of the base material layer, thereby obtaining the shell.
The preparation method of the foaming coating comprises the following steps: dispersing the polycrystalline silicon carbide in the silicon-oxygen coupling agent aqueous solution to obtain a silicon-oxygen coupling agent solution of the polycrystalline silicon carbide; and mixing and stirring a silicon-oxygen coupling agent solution of polycrystalline silicon carbide, aqueous polyurethane, a foam stabilizer, a thickening agent, a flatting agent and color paste to obtain the foaming coating.
Wherein the content range of the polycrystalline silicon carbide in the silicon-oxygen coupling agent solution of the polycrystalline silicon carbide is 35 percent; the content of the silicon-oxygen coupling agent solution of the polycrystalline silicon carbide in the foaming coating is within a ratio range of 13%; the content of the waterborne polyurethane in the foaming coating is 80 percent; the content of the foam stabilizer in the foaming coating is 4%; the content of the thickening agent in the foaming coating ranges from 1.2%; the content of the leveling agent in the foaming coating is 0.3%; the content of the color paste in the foaming coating is 1.5 percent.
The case of comparative example 1 was subjected to a softness test, a negative oxygen ion test, and a surface roughness test.
Comparative example 2
Providing a substrate layer, wherein the substrate layer is made of silica gel; providing a foaming coating, and forming the foaming coating on one side surface of the substrate layer, wherein the foaming coating comprises the following components: polycrystalline silicon carbide, a silica coupling agent aqueous solution, waterborne polyurethane, a foam stabilizer, a thickening agent, a leveling agent and color paste; and drying the foaming coating to form a foaming coating on the surface of the base material layer, thereby obtaining the shell.
The preparation method of the foaming coating comprises the following steps: dispersing the polycrystalline silicon carbide in the silicon-oxygen coupling agent aqueous solution to obtain a silicon-oxygen coupling agent solution of the polycrystalline silicon carbide; and mixing and stirring a silicon-oxygen coupling agent solution of polycrystalline silicon carbide, aqueous polyurethane, a foam stabilizer, a thickening agent, a flatting agent and color paste to obtain the foaming coating.
Wherein the content range of the polycrystalline silicon carbide in the silicon-oxygen coupling agent solution of the polycrystalline silicon carbide is 17%; the content of the silicon-oxygen coupling agent solution of the polycrystalline silicon carbide in the foaming coating is 16 percent; the content of the waterborne polyurethane in the foaming coating is 79%; the content of the foam stabilizer in the foaming coating is 1.2%; the content of the thickening agent in the foaming coating ranges from 1.4%; the content of the leveling agent in the foaming coating is 0.4%; the content of the color paste in the foaming coating is within 2 percent.
The case of comparative example 2 was subjected to a softness test, a negative oxygen ion test, and a surface roughness test.
Comparative example 3
The housing of comparative example 3 contained only a substrate layer and did not contain the foamed coating layer of the previous example.
The negative oxygen ion test was performed on the case of comparative example 3.
TABLE 1
The softness test is the softness of the foam coating of the shell, the foam coating is separated from the base material layer during the test, and then the foam coating is placed in a softness tester for testing, the adopted instrument is an ST-300 coating fabric softness tester, and the national standard is QB/T4870-2015 leather softness tester; the negative oxygen ion test is that the concentration of the negative oxygen ions is 5 cm away from the surface of the base material layer of the foaming coating layer of the shell; the surface roughness test is a method for measuring the surface roughness of the sputtered film through an atomic force microscope test and referring to the GB/T31227-2014 atomic force microscope.
Comparing examples 1, 2, 3 and comparative examples 1 to 3, it can be seen that the content of negative oxygen ions released from the case provided with the foamed coating of the present application is much greater than that released from the case not provided with the foamed coating of the present application; also, as can be seen by comparing the negative oxygen ion content of examples 1, 2, 3 and comparative examples 1, 2 with that of comparative example 3, the higher the content of the negative oxygen ion generating agent in the foamed coating layer, the higher the content of the negative oxygen ion released from the shell; however, as can be seen by comparing the surface roughness of examples 1, 2 and 3 and comparative example 2 with the surface roughness of comparative example 1, when the content of the negative oxygen ion generating agent is too high, the roughness of the surface of the foam coating is greatly increased, so that the surface of the shell is rough and uneven, the touch feeling is affected, and the surface roughness of the shell can be reduced and the flatness can be improved by the surface treatment layer; in addition, comparing the softness of examples 1, 2 and 3 and comparative example 1 with the softness of comparative example 2, it can be seen that the content of the foam stabilizer has a large influence on the softness of the surface of the shell, and the foam coating of comparative example 2 has too little stabilizer to perform the foam stabilizing function, and the surface is hard.
Reference herein to "an embodiment" or "an implementation" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present application and not for limiting, and although the present application is described in detail with reference to the above preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present application without departing from the spirit and scope of the technical solutions of the present application.
Claims (14)
1. A housing, comprising:
a substrate layer; and
the foaming coating is formed on one side surface of the base material layer; the foamed coating includes a negative oxygen ion generator.
2. The housing of claim 1, wherein the foam coating is prepared from raw materials comprising:
a negative oxygen ion generator;
an aqueous solution of a silica coupling agent;
aqueous polyurethane; and
a foam stabilizer;
wherein, in the raw material for forming the foaming coating, the negative oxygen ion generating agent is mixed with the silicon-oxygen coupling agent aqueous solution to form a silicon-oxygen coupling agent solution of the negative oxygen ion generating agent, wherein the content of the negative oxygen ion generating agent in the silicon-oxygen coupling agent solution of the negative oxygen ion generating agent ranges from 10% to 20%; the content ratio of the silicon-oxygen coupling agent solution of the negative oxygen ion generating agent in the raw material for forming the foaming coating ranges from 1% to 20%; the content of the waterborne polyurethane in the raw materials for forming the foaming coating ranges from 70% to 80%; the content of the foam stabilizer in the raw materials for forming the foaming coating ranges from 3% to 5%.
3. The housing of claim 2, wherein the silicone coupling agent is any one of γ -aminopropyltriethoxysilane (KH550), 3- (2, 3-glycidoxy) propyltrimethoxysilane (KH560), and γ - (methacryloyloxy) propyltrimethoxysilane (KH 570).
4. The housing of claim 2, wherein the foam stabilizer is any one of a stearamide emulsion, a silicone polyether emulsion, and an alkyl dimethyl amine oxide.
5. The housing of claim 2, wherein the raw materials forming the foamed coating further comprise a thickener, a leveling agent, and a color paste; the content of the thickening agent in the raw materials for forming the foaming coating ranges from 0.5% to 1.5%; the content of the leveling agent in the raw materials for forming the foaming coating ranges from 0.2% to 0.5%; the content of the color paste in the raw materials for forming the foaming coating ranges from 1% to 2%.
6. The housing according to any one of claims 1 to 5, wherein the foamed coating has a softness of 6.8 or more; the negative oxygen ion release amount of the foamed coating is such that the concentration of negative oxygen ions at a distance of 5 cm from the foamed coating is 2000 per cubic centimeter to 20000 per cubic centimeter.
7. The housing according to any one of claims 1 to 5, wherein the negative oxygen ion generator is polycrystalline silicon carbide, opal, or diatom ooze.
8. The casing according to any one of claims 1 to 5, wherein the foamed coating layer is formed with uniform cells, and the negative oxygen ion generator is immobilized in the cells of the foamed coating layer.
9. The housing according to any one of claims 1 to 5, wherein a surface treatment layer is further formed on the surface of the foam coating layer away from the substrate layer; the surface treatment layer is obtained by drying an aqueous anionic surface treatment agent, an aqueous cationic surface treatment agent or an aqueous nonionic surface treatment agent; wherein the solid content of the aqueous anionic surface treating agent, the aqueous cationic surface treating agent and the aqueous nonionic surface treating agent is 10-20%.
10. The housing of any one of claims 1 to 5, wherein the substrate layer is a plastic sheet, a metal sheet, a ceramic sheet, or a composite sheet.
11. A method of making a housing, comprising:
providing a substrate layer;
providing a foaming coating, and forming the foaming coating on one side surface of the substrate layer; wherein the foaming coating comprises a negative oxygen ion generator; and
and drying the foaming coating to form a foaming coating on the surface of the base material layer, thereby obtaining the shell.
12. The method of manufacturing a housing of claim 11, wherein the foaming coating comprises the following components:
a negative oxygen ion generator;
an aqueous solution of a silica coupling agent;
aqueous polyurethane; and
a foam stabilizer;
wherein, the negative oxygen ion generator and the silica coupling agent aqueous solution are mixed in the raw material of the foaming coating to form a silica coupling agent solution of the negative oxygen ion generator, wherein, the content range of the negative oxygen ion generator in the silica coupling agent solution of the negative oxygen ion generator is 10-20%; the content of the silicon-oxygen coupling agent solution of the negative oxygen ion generator in the foaming coating ranges from 1% to 20%; the content of the waterborne polyurethane in the foaming coating ranges from 70% to 80%; the content of the foam stabilizer in the foaming coating ranges from 3% to 5%.
13. The method of manufacturing a housing according to claim 11, wherein after forming the foamed coating layer, the method of manufacturing a housing further comprises:
forming a surface treatment layer on the surface of the foaming coating layer far away from the base material layer; the surface treatment layer is obtained by drying an aqueous anionic surface treatment agent, an aqueous cationic surface treatment agent or an aqueous nonionic surface treatment agent; wherein the solid content of the aqueous anionic surface treating agent, the aqueous cationic surface treating agent and the aqueous nonionic surface treating agent is 10-20%.
14. An electronic device, characterized in that it comprises a casing according to any one of claims 1 to 10.
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