CN107295765B - A kind of plastics mobile terminal shell of metal-like - Google Patents

A kind of plastics mobile terminal shell of metal-like Download PDF

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Publication number
CN107295765B
CN107295765B CN201710465978.9A CN201710465978A CN107295765B CN 107295765 B CN107295765 B CN 107295765B CN 201710465978 A CN201710465978 A CN 201710465978A CN 107295765 B CN107295765 B CN 107295765B
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mobile terminal
metal
terminal shell
temperature
parts
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CN107295765A (en
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白林森
梁莲芝
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Xinhe (Dongguan) plate Co.,Ltd.
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Wuxi City Hengli Hong Kong Ltd
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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00Casings, cabinets or drawers for electric apparatus
    • H05K5/02Details
    • H05K5/0217Mechanical details of casings
    • H05K5/0243Mechanical details of casings for decorative purposes
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/06Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
    • C23C14/14Metallic material, boron or silicon
    • C23C14/20Metallic material, boron or silicon on organic substrates
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C28/00Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/12Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/134Plasma spraying
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02Anodisation
    • C25D11/026Anodisation with spark discharge
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02Anodisation
    • C25D11/04Anodisation of aluminium or alloys based thereon
    • C25D11/06Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
    • C25D11/08Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing inorganic acids
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02Anodisation
    • C25D11/04Anodisation of aluminium or alloys based thereon
    • C25D11/18After-treatment, e.g. pore-sealing
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02Anodisation
    • C25D11/04Anodisation of aluminium or alloys based thereon
    • C25D11/18After-treatment, e.g. pore-sealing
    • C25D11/20Electrolytic after-treatment
    • C25D11/22Electrolytic after-treatment for colouring layers

Abstract

The present invention provides a kind of plastics mobile terminal shell of metal-like, which successively passes through: pretreatment, deposited metal aluminium layer, anodic oxidation, differential arc oxidation, filling temperature sensing color changing particle, coating organic coating film, specific region carry out radium-shine removal organic coating film, electrolytic coloring, hot water treatment, coating transparent wear step.The exterior design of the mobile terminal shell is abundant, can temperature sensing color changing, color multiplicity has metal-like, and coating is tightly combined with plastics, and preparation process is simple, safety and environmental protection, is equally applicable to aluminum alloy complex surface.

Description

A kind of plastics mobile terminal shell of metal-like
Technical field
The present invention relates to plastic material surface processing technology fields, are surface-treated and obtain more particularly to a kind of plastic basis material The plastics mobile terminal shell of multicolour, more pattern metal texture.
Background technique
Currently, with science and technology and rapid development of economy, requirement of the people to quality of life is also higher and higher, for buying Commodity not only selected in price and quality, more emphasis product gives people's bring perception, also occurs more and more Personalized requirement, such as to color, to pattern, the requirement of metal-like, this is also the shell or housing of current mobile terminal Development trend improves the diversity and interest object for appreciation property of shell, as CN106254594A is disclosed under the premise of guaranteeing quality and performance A kind of color-changing mobile phone shell, by the discoloration portion of one layer of surface co-extrusion or fitting with electrochromic particles of mobile phone shell ontology, with Reach the function of discoloration, but the discoloration portion being bonded still is prone to wear or falls off;CN101235500A is disclosed in nonmetallic modeling Expect that material surface forms the first metal layer, second metal layer is then electroplated on the first metal layer, although in plastic surface galvanizing Metal reduces the use of metal, but is not able to satisfy requirement of the people to interest and sense organ.
It is mainly used in addition, going for personalized pattern for metal base: as the surface CN106400083 A is beaten After mill, surface alkali cleaning, surface sand-blasting, first time anodic oxidation, CNC high light processing, oil removing cleaning are carried out to frame;Phone housing Ink is sprayed after shielded;Ink baking;Uv-exposure processing;Development treatment;Baking, UV irradiate cured printing ink;Second of sun Pole oxidation processes;Remove ink;Third time anodized, but exposure development process needs to come in fact with film vacuum mask It is existing, but the technique is not suitable for complex surface.CN103253072 A is disclosed aluminium alloy punch forming to required shape;It will Aluminum alloy machinery polishing after punch forming;To the aluminium alloy ungrease treatment after mechanical polishing in degreasing agent;By ungrease treatment First time anodic oxidation is carried out in aluminium alloy merging acid storage afterwards;Aluminium alloy after above-mentioned first time anodic oxidation is placed in dye It is dyed in material, and carries out sealing pores after dyeing;Aluminum alloy surface silk-screen printing sense after above-mentioned dyeing and sealing pores Light ink, and expose, develop and photocuring processing;Aluminium alloy after above-mentioned printing is moved back into oxidation film process in alkaline solution; It will treated alloy product blasting treatment;By second of anodized of alloy product after above-mentioned blasting treatment, And by the product sealing pores after second of anodic oxidation;Above-mentioned alloy product surface photosensitive-ink is removed, whole process Electrolyte that is extremely complex, and using, development all have higher toxicity, are unfavorable for safety and environmental protection, and process above is both needed to Want multiple anodic oxidation that could obtain multicolour requirement.In this case, it is urgent to provide one kind to obtain on plastic basis material surface The metal-like coating of multicolour, change multiplicity is obtained, and coating is tightly combined, is easy to operate, safety non-pollution technique.
Summary of the invention
The present invention provides a kind of plastics mobile terminal shell of metal-like, the exterior design of the mobile terminal shell is rich Richness, color multiplicity, has metal-like, coating is tightly combined with plastics, and preparation process is simple, and safety and environmental protection is equally applicable to Aluminum alloy complex surface.
A kind of plastics mobile terminal shell of metal-like proposed by the present invention, the plastics be selected from polycarbonate, polyamide, One kind of polyacetals, denaturation polyphenylene oxide or polyphenylene sulfide, the mobile terminal case successively pass through:
(1) it pre-processes :(a) sandblasting is carried out to plastic basis material first: using 1 ~ 63 μm or 45 ~ 90 μm of diamond dust, quartz Sand, copper ore, ceramic sand, zircon sand, diamond grain, one kind of aluminum oxide sand or its mixture carry out sandblasting, blasting treatment thickness For 100 ~ 200nm, pressure is lower than 1.5 atmospheric pressure, and for humidity less than 5.5%, temperature is lower than 25oC;(b) in NaOH, Na2CO3、 Na3PO4It is impregnated 2 ~ 5 minutes with ultrasound in the alkaline degreaser of emulsifier composition, air-cooler drying;(c) antistatic is done with removing electric rifle Processing;
(2) PVD deposition metallic aluminum: the method for PVD deposition metallic aluminum includes vacuum vapor plating, vacuum sputtering plating Film or vacuum ion membrane plating, it is operating condition that wherein vacuum ionic, which is plated with vacuum, and vacuum degree is 10-2~10~3In pa, target is aluminium Powder, power supply are 250 ~ 350V, duty ratio 40%, time 15min;
(3) anodic oxidation: the electrolyte of anodic oxidation include 5 ~ 15wt.% of sulfuric acid, 5 ~ 10g/L of aluminium ion, temperature be 15 ~ 28oC, 15 ~ 25V of voltage, 1 ~ 1.5A/dm of current density2, 20 ~ 30min of oxidization time;
(4) technique of differential arc oxidation are as follows: electrolyte Na2SiO3、Na3PO4, NaOH, NaF and ethylene glycol composition mixing Liquid, mass ratio 9:25:9:13:3, remaining as deionized water, electrolytic parameter: voltage is 300V~350V, 5 ~ 8A/ of current density dm2, electrolyte temperature is 20 DEG C, time 5min~10min;
(5) reaming: reaming be the use of mass fraction is 65 ~ 70% NaOH, 17 ~ 23% NaHCO3With 10 ~ 15% 12 The mixed liquor of sodium alkyl sulfonate composition, 20-40 DEG C of temperature, 20 ~ 30min of time makes aluminium oxide aperture reach 500 ~ 900nm;
(6) fill temperature sensing color changing particle: temperature sensing color changing particle is nanometer-sized microcapsules temperature sensing color changing powder;
(7) coat organic coating film: organic coating film by 20 ~ 45 parts of thermoplastic acrylic resin, 20-25 part of polystyrene, gather 10-15 parts of vinylpyrrolidone, 5 ~ 12 parts of nanometer calcium carbonate, 5 ~ 8 parts of Silane coupling agent KH550, levelling agent TEGO440 8 ~ 12 16 ~ 20 parts and 15 ~ 28 parts of ethyl acetate part, ethylene carbonate compositions;
(8) specific region carries out radium-shine removal organic coating film;
(9) electrolytic coloring: electrolytic coloring is inorganic coloring or organic coloring, wherein inorganic coloring technique are as follows: electrolyte by 20 ~ 24g/L of nickel sulfate, 7 ~ 8g/L of stannous sulfate, 10 ~ 15g/L of boric acid, 5 ~ 12g/L of nitric acid, 12 ~ 17g/L of stabilizer composition, temperature Degree is room temperature, and voltage is 15 ~ 20V, and the time is 30 ~ 40min;Organic coloring technique are as follows: by sodium alizarine sulphonate 0.5g/L and to nitre The soak of base nitrophenylazosalicylate sodium 0.7g/L composition impregnates substrate, 3 ~ 5min of soaking time, temperature 30 ~ 40oC;
(10) hot water treatment: 80 ~ 90oAt a temperature of C, with the distilled water of pH5 ~ 6 and the mixed liquor of acetone to organic painting Film is dissolved, meanwhile, sealing pores are carried out to radium-shine region, then proceed to hot water treatment, hot water is carried out to non-radium-shine region Sealing of hole;
(11) natural cooling, it is dry;
(12) in surface plasma spray coating transparent wear, which is polyamidoimide wearing layer.
In addition, in order to further realize multi-level scalariform metal sense, step (9) can also be for removing organic coating region It carries out being roughened-chemical nickel plating-copper facing formation metal layer.
The exterior design of the mobile terminal is abundant, and the temperature sensing color changing microparticle of addition can be according to environment temperature color-changing Coloured silk, when temperature is higher, cool tone is presented in shell, warm tones, color multiplicity is presented when the temperature is low, and have metal-like, Give visual experience abundant, coating is tightly combined with plastics, and preparation process is simple, and safety and environmental protection is equally applicable to plastics Mobile terminal shell complex surface.
Detailed description of the invention
Fig. 1 is 3 plastics mobile terminal shell processing method flow chart of the embodiment of the present invention;
Fig. 2 be the present invention obtain metal-like, more patterns (being pattern example with our company's name " perseverance great benefit "), can temperature sensing color changing The product of plastics mobile terminal.
Specific embodiment
Embodiment 1:
(1) polyamide substrate is pre-processed :(a) first progress sandblasting: using 1 ~ 63 μm or 45 ~ 90 μm diamond dust, Quartz sand, copper ore, ceramic sand, zircon sand, diamond grain, one kind of aluminum oxide sand or its mixture, blasting treatment is with a thickness of 100 ~ 200nm, pressure are lower than 1.5 atmospheric pressure, and for humidity less than 5.5%, temperature is lower than 25oC, (b) in NaOH, Na2CO3、Na3PO4With Ultrasound is impregnated 2 ~ 5 minutes in the alkaline degreaser of emulsifier composition, air-cooler drying;(c) except electric rifle does antistatic process;
(2) PVD deposition metallic aluminum: the method for PVD deposition metallic aluminum includes vacuum vapor plating, vacuum sputtering plating Film or vacuum ion membrane plating, it is operating condition that wherein vacuum ionic, which is plated with vacuum, and vacuum degree is 10-2~10~3In pa, target is aluminium Powder, power supply 250V, duty ratio 40%, time 15min;
(3) anodic oxidation: the condition of anodic oxidation is that electrolyte includes sulfuric acid 5wt.%, aluminium ion 5g/L, and temperature is 15oC, voltage 15V, current density 1A/dm2, oxidization time 20min;
(4) technique of differential arc oxidation are as follows: electrolyte Na2SiO3、Na3The mixing of PO4, NaOH, NaF and ethylene glycol composition Liquid, mass ratio 9:25:9:13:3, remaining as deionized water, electrolytic parameter: voltage 300V, current density 5A/dm2, electrolysis Liquid temperature is 20 DEG C, time 5min;
(5) reaming: being 65% NaOH, 17% NaHCO using mass fraction3Dodecyl sodium sulfate with 10% forms Mixed liquor, 20 DEG C of temperature, time 20min makes aluminium oxide aperture reach 500 ~ 900nm;
(6) fill temperature sensing color changing particle: temperature sensing color changing particle is nanometer-sized microcapsules temperature sensing color changing powder;
(7) coat organic coating film: organic coating film by 20 ~ 45 parts of thermoplastic acrylic resin, 20-25 part of polystyrene, gather 10-15 parts of vinylpyrrolidone, 5 ~ 12 parts of nanometer calcium carbonate, 5 ~ 8 parts of Silane coupling agent KH550, levelling agent TEGO440 8 ~ 12 16 ~ 20 parts and 15 ~ 28 parts of ethyl acetate part, ethylene carbonate compositions;
(8) specific region carries out radium-shine removal organic coating film;
(9) electrolytic coloring: electrolytic coloring is inorganic coloring or organic coloring, and wherein inorganic coloring technique: electrolyte is by sulphur Sour nickel 20g/L, stannous sulfate 7g/L, boric acid 10g/L, nitric acid 5g/L, stabilizer 12g/L composition, temperature is room temperature, voltage 15 ~ 20V, time 30min;Organic coloring technique are as follows: by sodium alizarine sulphonate 0.5g/L and para-nitrophenylazosalicylate sodium 0.7g/ The soak of L composition impregnates substrate, 3 ~ 5min of time, temperature 30 ~ 40oC;
(10) hot water treatment: 90oUnder C, organic coating film is carried out with the mixed liquor of the distilled water of pH=5 ~ 6 and acetone molten Solution, meanwhile, sealing pores are carried out to radium-shine region, then proceed to hot water treatment, hot water sealing of hole is carried out to non-radium-shine region;
(11) natural cooling, it is dry;
(12) in surface plasma spray coating transparent wear, which is polyamidoimide wearing layer.
Embodiment 2:
(1) polyamide substrate is pre-processed :(a) sandblasting is carried out to substrate first: uses 1 ~ 63 μm or 45 ~ 90 μm of gold Emery, quartz sand, copper ore, ceramic sand, zircon sand, diamond grain, one kind of aluminum oxide sand or its mixture, blasting treatment thickness For 100 ~ 200nm, pressure is lower than 1.5 atmospheric pressure, and for humidity less than 5.5%, temperature is lower than 25oC, (b) in NaOH, Na2CO3、 Na3PO4It is impregnated 2 ~ 5 minutes with ultrasound in the alkaline degreaser of emulsifier composition, air-cooler drying;(c) antistatic is done with removing electric rifle Processing;
(2) PVD deposition metallic aluminum: the method for PVD deposition metallic aluminum includes vacuum vapor plating, vacuum sputtering plating Film or vacuum ion membrane plating, it is operating condition that wherein vacuum ionic, which is plated with vacuum, and vacuum degree is 10-2~10~3In pa, target is aluminium Powder, power supply 300V, duty ratio 40%, time 15min;
(3) anodic oxidation: the condition of anodic oxidation is that electrolyte includes sulfuric acid 20wt.%, aluminium ion 7.5g/L, and temperature is 23oC, voltage 20V, current density 1.3A/dm2, oxidization time 25min;
(4) technique of differential arc oxidation are as follows: electrolyte Na2SiO3、Na3The mixing of PO4, NaOH, NaF and ethylene glycol composition Liquid, mass ratio 9:25:9:13:3, remaining as deionized water, electrolytic parameter: voltage 300V, current density 7.5A/dm2, electricity Solving liquid temperature is 20 DEG C, time 7.5min;
(5) reaming: reaming be the use of mass fraction is 67.5% NaOH, 20% NaHCO3With 12.5% dodecyl The mixed liquor of sodium sulfonate composition, 30 DEG C of temperature, time 25min makes aluminium oxide aperture reach 500 ~ 900nm;
(6) fill temperature sensing color changing particle: temperature sensing color changing particle is nanometer-sized microcapsules temperature sensing color changing powder;
(7) coat organic coating film: organic coating film by 20 ~ 45 parts of thermoplastic acrylic resin, 20-25 part of polystyrene, gather 10-15 parts of vinylpyrrolidone, 5 ~ 12 parts of nanometer calcium carbonate, 5 ~ 8 parts of Silane coupling agent KH550, levelling agent TEGO440 8 ~ 12 Part, 16 ~ 20 parts and 15 ~ 28 parts of ethyl acetate compositions of ethylene carbonate;
(8) specific region carries out radium-shine removal organic coating film;
(9) electrolytic coloring: electrolytic coloring is inorganic coloring or organic coloring, and wherein inorganic coloring technique: electrolyte is by sulphur Sour nickel 22g/L, stannous sulfate 7.5g/L, boric acid 12.5g/L, nitric acid 8.5g/L, stabilizer 14g/L composition, temperature is room temperature, electricity Pressure is 17.5V, time 35min;Organic coloring technique are as follows: by sodium alizarine sulphonate 0.5g/L and para-nitrophenylazosalicylate sodium The soak of 0.7g/L composition impregnates substrate, 3 ~ 5min of time, temperature 30 ~ 40oC;
(10) hot water treatment: 90oUnder C, organic coating film is carried out with the mixed liquor of the distilled water of pH=5 ~ 6 and acetone molten Solution, meanwhile, sealing pores are carried out to radium-shine region, then proceed to hot water treatment, hot water sealing of hole is carried out to non-radium-shine region;
(11) natural cooling, it is dry;
(12) in surface plasma spray coating transparent wear, which is polyamidoimide wearing layer.
Embodiment 3:
(1) polyamide substrate is pre-processed :(a) sandblasting is carried out to substrate first: uses 1 ~ 63 μm or 45 ~ 90 μm of gold Emery, quartz sand, copper ore, ceramic sand, zircon sand, diamond grain, one kind of aluminum oxide sand or its mixture, blasting treatment thickness For 100 ~ 200nm, pressure is lower than 1.5 atmospheric pressure, and for humidity less than 5.5%, temperature is lower than 25oC, (b) in NaOH, Na2CO3、 Na3PO4It is impregnated 2 ~ 5 minutes with ultrasound in the alkaline degreaser of emulsifier composition, air-cooler drying;(c) antistatic is done with removing electric rifle Processing;
(2) PVD deposition metallic aluminum: the method for PVD deposition metallic aluminum includes vacuum vapor plating, vacuum sputtering plating Film or vacuum ion membrane plating, it is operating condition that wherein vacuum ionic, which is plated with vacuum, and vacuum degree is 10-2~10~3In pa, target is aluminium Powder, power supply 350V, duty ratio 40%, time 15min;
(3) anodic oxidation: the electrolyte of anodic oxidation is sulfuric acid 15wt.%, aluminium ion 10g/L, temperature 28oC, voltage 25V, current density 1.5A/dm2, oxidization time 30min;
(4) technique of differential arc oxidation are as follows: electrolyte Na2SiO3、Na3The mixing of PO4, NaOH, NaF and ethylene glycol composition Liquid, mass ratio 9:25:9:13:3, remaining as deionized water, electrolytic parameter: voltage 350V, current density 8A/dm2, electrolysis Liquid temperature is 20 DEG C, time 10min;
(5) reaming: reaming be the use of mass fraction is 70% NaOH, 23% NaHCO3With 15% dodecyl sodium sulfonate The mixed liquor of sodium composition, 40 DEG C of temperature, time 30min makes aluminium oxide aperture reach 500 ~ 900nm;
(6) fill temperature sensing color changing particle: temperature sensing color changing particle is nanometer-sized microcapsules temperature sensing color changing powder;
(7) coat organic coating film: organic coating film by 20 ~ 45 parts of thermoplastic acrylic resin, 20-25 part of polystyrene, gather 10-15 parts of vinylpyrrolidone, 5 ~ 12 parts of nanometer calcium carbonate, 5 ~ 8 parts of Silane coupling agent KH550, levelling agent TEGO440 8 ~ 12 16 ~ 20 parts and 15 ~ 28 parts of ethyl acetate part, ethylene carbonate compositions;
(8) specific region carries out radium-shine removal organic coating film;
(9) removing organic coating region is carried out being roughened-chemical nickel plating-copper facing formation metal layer;Wherein roughening uses acid Liquid, chemical nickel plating are to be uniformly distributed nickel particle in porous oxidation aluminium surface, and then traditional copper facing, obtains the coat of metal;
(10) hot water treatment removes organic matter film, sealing of hole;
(11) natural cooling, it is dry;
(12) in surface plasma spray coating transparent wear, which is polyamidoimide wearing layer.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered It is considered as protection scope of the present invention.

Claims (9)

1. a kind of plastics mobile terminal shell of metal-like, it is characterised in that the shell of the plastics mobile terminal shell successively passes through Cross (1) surface preparation;(2) PVD deposition metallic aluminum;(3) anodic oxidation;(4) micro-arc oxidation process;(5) reaming;(6) it fills out Fill temperature sensing color changing particle;(7) organic coating film is coated;(8) specific region carries out radium-shine removal organic coating film;(9) electrolytic coloring; (10) hot water treatment, the reagent that the hot water treatment uses are the mixed liquor of distilled water and acetone;(11) natural cooling, it is dry; (12) transparent wear is coated.
2. a kind of plastics mobile terminal shell of metal-like as described in claim 1, it is characterised in that plastic material is selected from Polycarbonate, polyamide, polyacetals, denaturation polyphenylene oxide, polyphenylene sulfide.
3. a kind of plastics mobile terminal shell of metal-like as described in claim 1, it is characterised in that surface preparation step It suddenly include: that (a) carries out sandblasting to plastic basis material first: using 1 ~ 63 μm or 45 ~ 90 μm of diamond dust, quartz sand, copper ore, pottery Porcelain sand, zircon sand, diamond grain, one kind of aluminum oxide sand or its mixture carry out sandblasting, blasting treatment with a thickness of 100 ~ 200nm, Pressure is lower than 1.5 atmospheric pressure, and for humidity less than 5.5%, temperature is lower than 25oC;(b) in NaOH, Na2CO3、Na3PO4With emulsifier group At alkaline degreaser in ultrasound impregnate 2 ~ 5 minutes, air-cooler drying;(c) antistatic process is done with removing electric rifle.
4. a kind of plastics mobile terminal shell of metal-like as described in claim 1, it is characterised in that PVD deposition metallic aluminium The method of layer includes vacuum vapor plating, vacuum sputtering coating or vacuum ion membrane plating, and it is work that wherein vacuum ionic, which is plated with vacuum, Make condition, vacuum degree is 10-2~10~3In pa, target is aluminium powder, and power supply is 250 ~ 350V, duty ratio 40%, time 15min.
5. a kind of plastics mobile terminal shell of metal-like as described in claim 1, it is characterised in that anodic oxidation electrolysis Liquid includes 5 ~ 15wt.% of sulfuric acid, 5 ~ 10g/L of aluminium ion, and temperature is 15 ~ 28oC, 15 ~ 25V of voltage, 1 ~ 1.5A/dm of current density2, 20 ~ 30min of oxidization time;The electrolyte of differential arc oxidation is Na2SiO3、Na3PO4, NaOH, NaF and ethylene glycol composition mixing Liquid, mass ratio 9:25:9:13:3, remaining as deionized water, electrolytic parameter: voltage 300V~350V, 5 ~ 8A/ of current density dm2, 20 DEG C of electrolyte temperature, 5~10min of time;Reaming be the use of mass fraction is 65 ~ 70% NaOH, 17 ~ 23% NaHCO3With the mixed liquor of 10 ~ 15% dodecyl sodium sulfate composition, 20-40 DEG C of temperature, 20 ~ 30min of time makes aluminium oxide Aperture reaches 500 ~ 900nm.
6. a kind of plastics mobile terminal shell of metal-like as described in claim 1, which is characterized in that the warming becomes Coloured particles are preferably nanometer-sized microcapsules temperature sensing color changing powder.
7. a kind of plastics mobile terminal shell of metal-like as described in claim 1, it is characterised in that the organic coating film By 20 ~ 45 parts of thermoplastic acrylic resin, 20-25 parts of polystyrene, 10-15 parts of polyvinylpyrrolidone, nanometer calcium carbonate 5 ~ 12 parts, 5 ~ 8 parts of Silane coupling agent KH550,8 ~ 12 parts of levelling agent TEGO440,16 ~ 20 parts of ethylene carbonate and ethyl acetate 15 ~ 28 parts of compositions.
8. a kind of plastics mobile terminal shell of metal-like as described in claim 1, it is characterised in that the electrolytic coloring For inorganic coloring or organic coloring, wherein inorganic coloring technique: electrolyte by 20 ~ 24g/L of nickel sulfate, 7 ~ 8g/L of stannous sulfate, 10 ~ 15g/L of boric acid, 5 ~ 12g/L of nitric acid, 12 ~ 17g/L of stabilizer composition, temperature is room temperature, and voltage is 15 ~ 20V, the time is 30 ~ 40min;Organic coloring technique are as follows: use what is be made of sodium alizarine sulphonate 0.5g/L and para-nitrophenylazosalicylate sodium 0.7g/L Soak, 3 ~ 5min of soaking time, temperature 30 ~ 40oC。
9. a kind of plastics mobile terminal shell of metal-like as described in claim 1, which is characterized in that the hot water treatment Technique is 80 ~ 90oAt a temperature of C, organic coating film is dissolved with the mixed liquor of the distilled water of pH5 ~ 6 and acetone, meanwhile, Sealing pores are carried out to radium-shine region, then proceed to hot water treatment, hot water sealing of hole is carried out to non-radium-shine region.
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