CN105324514A - Method for varnishing plated parts - Google Patents

Method for varnishing plated parts Download PDF

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Publication number
CN105324514A
CN105324514A CN201480035769.5A CN201480035769A CN105324514A CN 105324514 A CN105324514 A CN 105324514A CN 201480035769 A CN201480035769 A CN 201480035769A CN 105324514 A CN105324514 A CN 105324514A
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China
Prior art keywords
nickel dam
clear coat
nonmetallic substrate
layers
layer
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CN201480035769.5A
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CN105324514B (en
Inventor
H·杜尔丹
E·杜尔丹
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DOURDIN
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DOURDIN
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    • C—CHEMISTRY; METALLURGY
    • C23—COATING 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
    • C23C—COATING 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
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/18—Pretreatment of the material to be coated
    • C23C18/20—Pretreatment of the material to be coated of organic surfaces, e.g. resins
    • C23C18/28—Sensitising or activating
    • C23C18/285—Sensitising or activating with tin based compound or composition
    • C—CHEMISTRY; METALLURGY
    • C23—COATING 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
    • C23C—COATING 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
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/1601—Process or apparatus
    • C23C18/1633—Process of electroless plating
    • C23C18/1646—Characteristics of the product obtained
    • C23C18/165—Multilayered product
    • C23C18/1653—Two or more layers with at least one layer obtained by electroless plating and one layer obtained by electroplating
    • C—CHEMISTRY; METALLURGY
    • C23—COATING 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
    • C23C—COATING 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
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/18—Pretreatment of the material to be coated
    • C23C18/20—Pretreatment of the material to be coated of organic surfaces, e.g. resins
    • C23C18/2006—Pretreatment of the material to be coated of organic surfaces, e.g. resins by other methods than those of C23C18/22 - C23C18/30
    • C23C18/2046—Pretreatment of the material to be coated of organic surfaces, e.g. resins by other methods than those of C23C18/22 - C23C18/30 by chemical pretreatment
    • C23C18/2073—Multistep pretreatment
    • C23C18/2086—Multistep pretreatment with use of organic or inorganic compounds other than metals, first
    • C—CHEMISTRY; METALLURGY
    • C23—COATING 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
    • C23C—COATING 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
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/18—Pretreatment of the material to be coated
    • C23C18/20—Pretreatment of the material to be coated of organic surfaces, e.g. resins
    • C23C18/22—Roughening, e.g. by etching
    • C23C18/24—Roughening, e.g. by etching using acid aqueous solutions
    • C—CHEMISTRY; METALLURGY
    • C23—COATING 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
    • C23C—COATING 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
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/18—Pretreatment of the material to be coated
    • C23C18/20—Pretreatment of the material to be coated of organic surfaces, e.g. resins
    • C23C18/28—Sensitising or activating
    • C23C18/30—Activating or accelerating or sensitising with palladium or other noble metal
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D13/00—Electrophoretic coating characterised by the process
    • C25D13/22—Servicing or operating apparatus or multistep processes
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/48—After-treatment of electroplated surfaces
    • C25D5/50—After-treatment of electroplated surfaces by heat-treatment
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D7/00—Electroplating characterised by the article coated
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D9/00—Electrolytic coating other than with metals
    • C25D9/04—Electrolytic coating other than with metals with inorganic materials
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/10—Electroplating with more than one layer of the same or of different metals
    • C25D5/12—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/10—Electroplating with more than one layer of the same or of different metals
    • C25D5/12—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium
    • C25D5/14—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium two or more layers being of nickel or chromium, e.g. duplex or triplex layers
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/60—Electroplating characterised by the structure or texture of the layers
    • C25D5/623—Porosity of the layers
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/60—Electroplating characterised by the structure or texture of the layers
    • C25D5/625—Discontinuous layers, e.g. microcracked layers
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/627—Electroplating characterised by the visual appearance of the layers, e.g. colour, brightness or mat appearance

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Laminated Bodies (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Chemically Coating (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Abstract

A method for plating a non-metal support (S) in order to obtain a plated part, which involves: providing a non-metal support (S) having a surface (11); producing an adhesion layer (C1) on said surface (11); producing at least one reinforcing layer (C2) on the adhesion layer (C1); producing a varnish layer (C4) on top of the reinforcing layer (C2). The method involves carrying out a step of drying the varnish layer, during which the varnish layer is exposed to ultra-violet radiation.

Description

To the method for coated parts japanning
Background technology
The present invention relates to the field of the method for coated parts, particularly nonmetallic substrate.There will be a known different modes and carry out plating nonmetallic substrate.
Specifically, the drying process of known use plasma body or flame plating.The also Vacuum Deposition coating method such as known such as PVD.But these methods are owing to performing its necessary energy and condition and having relatively costly shortcoming.In addition, they are also difficult to apply in industrial rank.
Also known via electrolysis approach the solution and coating method of de-posited chromium layer.
An advantage of these class methods obtains the coated parts with metal appearance.These parts are used in particular for automotive industry.
But, for the chromium of plating, particularly sexavalent chrome, there is the shortcoming for environmental toxic.Sexavalent chrome needs the closed circuit treatment facility for waste water to reduce impact for environment.Therefore the cost involved by production coated parts is high.Trivalent chromium is also noxious chemical.Trivalent chromium causes the problem identical with sexavalent chrome.
The another shortcoming of chromium is used to be that it produces the high scrap rate that result in component end item.Therefore, this high scrap rate adds the production cost of parts.
Summary of the invention
An object of the present invention is to propose a kind of method overcoming above-mentioned shortcoming.
For this purpose, the present invention relates to the method for plating nonmetallic substrate, the method allows to obtain Chrome-free coated parts, wherein:
The nonmetallic substrate with surface is provided;
Form tack coat on said surface;
Tack coat is formed at least one strengthening layer;
Carry out the step of dry clear coat, wherein, make clear coat be exposed to uviolizing.
By the method, at least one clear coat is formed on described strengthening layer.
Advantageously, at least one nickel dam is formed on described strengthening layer, and at least one clear coat described is formed on described nickel dam.
According to an embodiment of described method, give metal appearance by being deposited on the existence of at least one nickel dam on strengthening layer.
This eliminates the use of chromium.In other words, the coated parts obtained by implementing described method is Chrome-free.
Clear coat is deposited on strengthening layer or nickel dam, thus protects strengthening layer or nickel dam and lower floor from the risk of corrosion and the impact from this parts environment for use.
In addition, clear coat can comprise the multiple clear coat obtained by depositing clear coat successively.
And when completing deposition step, will understand that the object of clear coat covering strengthening layer or nickel dam is to improve parts for the resistance of impacting and corrode.
Therefore, the parts obtained by implementing the method have metal appearance while firm.
According to the present invention, by launching the varnish of the device drying deposition of uviolizing, thus allow the crosslinked of varnish.Therefore this drying step is cross-linking step.
In addition, the drying step by means of uviolizing preferably carries out in the scope of 150nm to 400nm.
Preferably, described drying step carries out at lower than the temperature of 60 DEG C.
Should be appreciated that and utilize the drying step of uviolizing to employ service temperature lower than more conventional heated drying temperature, the temperature of this heated drying is higher than 120 DEG C.Therefore, described nonmetallic substrate experienced by lower temperature range, thus reduces the decomposition risk of described nonmetallic substrate.
In addition, in another embodiment, at lower than the temperature of 120 DEG C, the device of pulse conveying warm air on clear coat is used to carry out the drying step of clear coat.Therefore, in the mode identical with UV curing, use temperature reduces the deteriorated risk of nonmetallic substrate lower than the warm air of 120 DEG C.
Preferably, clear coat is transparent or painted.Therefore, by means of the present invention, transparent clear allows to expose the self colour of strengthening layer below clear coat or nickel dam.In addition, clear coat can be colored and obtain painted coated parts.Therefore, described parts are adapted to the aesthstic environment integrating described parts.
Preferably, described clear coat is electrolysis clear coat.Be appreciated that described clear coat deposits via chemical paths.Arranging described parts immerses in electrolyzer to make it, whereby by varnish deposit on strengthening layer or on nickel dam.
Preferably, according to a non-limiting embodiment, described clear coat comprises a series of clear coat.Be appreciated that the clear coat obtained with this has the transparency or color and luster changed according to continuous print clear coat quantity and thickness.
According to one preferably but the embodiment of nonexcludability, described nonmetallic substrate is made up of acrylonitrile-butadiene-styrene (ABS).
Described nonmetallic substrate is vinyl cyanide, divinyl and cinnamic multipolymer.Its advantage is to show strong physics and chemistry characteristic, as rigidity, shock-resistance, thermotolerance.
According to another embodiment, described nonmetallic substrate is made up of polymeric amide or polypropylene.
Be appreciated that described nonmetallic substrate is obtained by polyamide homopolymer.In addition, polymeric amide has excellent physical strength.
Advantageously, described nonmetallic substrate can be made up of multipolymer, and this multipolymer comprises the acrylonitrile-butadiene-styrene (ABS) matched with polycarbonate.This polymeric blends has better shock-resistance than independent acrylonitrile-butadiene-styrene (ABS) or polycarbonate at low temperatures.
According to another non-limiting embodiment, described nonmetallic substrate comprises polypropylene based polymers.Therefore, described nonmetallic substrate has excellent resistance to fatigue and has the advantage of reusable edible.
Advantageously, described tack coat is obtained by following process: on the surface of nonmetallic substrate, carry out chemical erosion successively, makes the surface active through described chemical erosion, and in activated deposited on silicon first nickel or layers of copper.
Therefore, first described surface stands, such as, for the nonmetallic substrate acid comprising acrylonitrile-butadiene-styrene (ABS), or for comprising the chemical erosion of substrate alkali of polymeric amide.Thereby is achieved the certain roughness on described surface.Activation step is subsequently undertaken by the catalyzer of deposition with the material compatible on described surface.In this way, obtain the tack coat of deposition on activated surface, thus improve the adhesivity of strengthening layer.
Preferably, described strengthening layer comprises at least one layers of copper.
Advantageously, described nickel dam comprises the nickel dam of micropore or microfracture.
An advantage of micropore or microfracture layer obtains the parts with better erosion resistance.
In addition, described nickel dam can be subdivided into semi-gloss nickel dam, bright nickel and micropore nickel dam three layer in succession.
In view of foregoing, be appreciated that the coated parts obtained advantageously by the described method of enforcement is Chrome-free.
The invention still further relates to the coated parts obtained by application solution and coating method of the present invention.
Advantageously, coated parts of the present invention is Chrome-free.In addition, it preferably comprises nonmetallic substrate, the deposition the first layer be made up of copper or nickel on said surface, setting layers of copper on the first layer, the clear coat being arranged at least one second nickel dam in layers of copper and being arranged on the second nickel dam with surface successively.
As a result, the second nickel dam imparts metal appearance, and the clear coat be simultaneously arranged on the second nickel dam various impact that to be coated parts cause from the environment for use of coated parts and corrosion provide protection.
Finally, the present invention relates to the method for modification coated parts, wherein, provide a kind of coated parts, it comprises nonmetallic substrate, and described nonmetallic substrate has tack coat, strengthening layer, nickel dam and layers of chrome successively.
Remove described layers of chrome and deposit clear coat on nickel dam.
The removal of described layers of chrome is undertaken by coated parts is flooded the scheduled time in a cell.
Preferably, described nickel dam comprises micropore or microfracture nickel dam.
Advantageously, described tack coat is nickel dam.
Advantageously, described strengthening layer is layers of copper.
An advantage of this method of modifying to make existing parts carry out coating except chromium (chromium-deplated), thus improve its environmental influence while its metal appearance of maintenance.
Accompanying drawing explanation
The description of reading the following embodiment of the present invention only provided as non-limiting example by referring to accompanying drawing will understand the present invention, in accompanying drawing better:
Fig. 1 illustrates coated parts of the present invention, and it does not contain chromium and comprises nonmetallic substrate and be arranged on the different successive layers on this nonmetallic substrate.
Fig. 2 describes the different step allowing the solution and coating method of the present invention obtaining Chrome-free coated parts.
Fig. 3 illustrates method of modifying of the present invention, and existing whereby coated parts can by coating except chromium.
Embodiment
Fig. 1 illustrates according to the invention not containing the coated parts 10 of chromium.These parts comprise nonmetallic substrate S, and layer C1 to C4 will be deposited thereon.Described nonmetallic substrate S has surface 11.
In this embodiment, described nonmetallic substrate S is plastic material piece.In this embodiment, substrate is made up of the ABS (acrylonitrile-butadiene-styrene (ABS)) with good mechanical strength and erosion resistance.In a modification, use the multipolymer comprising acrylonitrile-butadiene-styrene (ABS) and polycarbonate.
In addition, in another embodiment, metal substrate can be made up of polymeric amide.
In another modification, nonmetallic substrate S comprises polypropylene.
In fig. 2, first step S100 is that the substrate S of plastic material accepts chemical treatment and obtains the step of the described roughness of surperficial 11 on its surface 11.
In this embodiment, the chemical erosion on the surface 11 of the parts containing acrylonitrile-butadiene-styrene (ABS) polymkeric substance is undertaken by the bath that described parts is immersed in the sulfuric acid comprising the butadiene oxidation making substrate S exist on the surface.
In addition, the temperature of thermostatic control 65 DEG C (positive and negative 5 DEG C of vibrations) will be bathed.After certain immersion time, surface has become coarse.
Next, in step s 102, the surface 11 be etched of described substrate S is activated, for depositing the catalyzer containing tin and palladium thereon.
Comprise in an embodiment of polyamide polymkeric substance at parts, described parts are immersed in alkali containing solvation and thermostatic control in the bath of the temperature of 40 DEG C (positive and negative 5 DEG C).Similarly, the roughness on surface 11 is obtained.In this embodiment, carry out step S102 by depositing Pd catalyzer on the surface 11 of the substrate S at initial activation, thus make the surface active of described substrate S.
According to Fig. 2, carry out step S104 to deposit tack coat.Can find out in FIG, the first layer C1 is deposited on the surface 11 of nonmetallic substrate S.
The first layer C1 is the tack coat comprising nickel dam or layers of copper.In this embodiment, tack coat C1 is immersed in nickel bath by the nonmetallic substrate S on the surface by having activation and obtains.Tack coat C1 preferably has the thickness between 0.15 micron and 0.25 micron.
Comprise in the embodiment of vinyl cyanide at nonmetallic substrate, described nickel is by palladium and tin catalysis.
Comprise in an embodiment of polymeric amide at nonmetallic substrate, nickel passes through palladium chtalyst.
Carry out deposition step S106 to deposit strengthening layer C2, thus strengthen tack coat C1 and obtain uniform metal level.In this embodiment, described strengthening layer C2 is made up of copper.
The deposition step S106 of this strengthening layer allows by being immersed in copper bath by nonmetallic substrate S and deposits described layer C2.Therefore, strengthening layer C2 is deposited on tack coat C1.
Strengthening layer C2 has the thickness between 0.45 micron and 0.55 micron.
In another embodiment, described strengthening layer C2 is made up of nickel.In the same manner, strengthening layer C2 is deposited on tack coat C1.
Step is subsequently the deposition step S108 be deposited on by nickel dam C3 on strengthening layer C2.
In this embodiment, nickel dam C3 has the thickness between 10 microns to 20 microns.
Described nickel dam C3 is subdivided into three nickel dams:
Semi-gloss nickel dam;
Bright nickel; And
Micropore nickel dam.
Carry out deposition step S110 subsequently to deposit clear coat C4 on nickel dam C3.Described clear coat C4 deposits preferably by the bath of coated parts being immersed containing described varnish.
Next drying step S112 is carried out, it comprises the following steps: by UV irradiation equipment, clear coat C4 is cross-linked, this device comprises one group of UV-lamp, and it makes the coated parts comprising clear coat C4 be exposed to the uviolizing scheduled time, makes clear coat complete drying.
Obtain the coated parts of Chrome-free thus, it comprises the nonmetallic substrate S of polymeric amide or acrylonitrile-butadiene-styrene (ABS), the tack coat C1 comprising nickel, the strengthening layer C2 comprising copper, the nickel dam C3 comprising three kinds of nickel and clear coat C4.
With reference to Fig. 3, now the embodiment of method of modifying of the present invention will be described.
Described method starts from chromium coated parts 100, and it comprises nonmetallic substrate S, the tack coat C1 be deposited on nonmetallic substrate S surface, the strengthening layer C2 be deposited on tack coat C1, be deposited on nickel dam C3 on strengthening layer C2 and layers of chrome C4 '.
According to the method, the chromium coated parts comprising layers of chrome C4 ' is immersed in wherein by removing in the bath of described layers of chrome, to obtain the parts 102 comprising nonmetallic substrate S, tack coat C1, strengthening layer C2 and nickel dam C3.
Therefore the effect of this step removes layers of chrome.Then deposition clear coat C4 on the nickel dam C3 becoming parts top layer eliminating layers of chrome C4 '.
The clear coat C4 be deposited on nickel dam experiences drying step S112 and is fixed on described nickel dam C3 to make clear coat C4.
This causes obtaining Chrome-free coated parts 104.

Claims (16)

1., for a method of plating nonmetallic substrate (S), described method allows to obtain Chrome-free coated parts, wherein:
The nonmetallic substrate with surface (11) (S) is provided;
Described surface (11) are formed tack coat (C1);
At described tack coat (C1) at least one strengthening layer of upper formation (C2);
At described strengthening layer (C2) at least one clear coat of upper formation (C4);
Also carry out drying step (S112) with the described clear coat of drying (C4), wherein, make described clear coat be exposed to uviolizing.
2. the method for claim 1, wherein at described strengthening layer (C2) at least one nickel dam of upper formation (C3), and at least one clear coat wherein said (C4) is formed on described nickel dam (C3).
3. method as claimed in claim 1 or 2, wherein, described drying step (S112) carries out at lower than the temperature of 60 DEG C.
4. method as claimed any one in claims 1 to 3, wherein, described clear coat (C4) is transparent or painted.
5. the method according to any one of Claims 1-4, wherein, described clear coat (C4) is electrolysis clear coat.
6. the method according to any one of claim 1 to 5, wherein, described nonmetallic substrate (S) is made up of acrylonitrile-butadiene-styrene (ABS).
7. the method according to any one of claim 1 to 6, wherein, described nonmetallic substrate (S) is made up of polymeric amide or polypropylene.
8. the method according to any one of claim 1 to 7, wherein, described tack coat (C1) is obtained by following process: carry out the chemical erosion (S100) of surface (11) successively, make through the surface (11) of chemical erosion activation (S102) and the first layer at activated deposited on silicon (S104) nickel or copper.
9. the method according to any one of claim 1 to 8, wherein, described strengthening layer (C2) comprises at least one layers of copper.
10. the method according to any one of claim 2 and claim 1 to 9, wherein, described nickel dam (C3) comprises the nickel dam of micropore or microfracture.
11. 1 kinds of coated parts that can be obtained by the method implemented the claims according to any one of 1 to 10.
12. coated parts as claimed in claim 11, it is characterized in that, described coated parts is not containing chromium and comprise the nonmetallic substrate (S) with surface (11), the first layer (C1) be made up of copper or nickel be arranged on described surface (11), the layers of copper (C2) be arranged on described the first layer (C1), the clear coat (C4) that is arranged at least one second nickel dam (C3) in described layers of copper (C2) and is arranged on described second nickel dam (C3) successively.
The method of 13. 1 kinds of modification coated parts, wherein,
There is provided coated parts, it comprises nonmetallic substrate (S), and described nonmetallic substrate (S) has tack coat (C1), strengthening layer (C2), nickel dam (C3) and layers of chrome (C4 ') successively;
Remove described layers of chrome (C4 ') and deposit clear coat (C4) on described nickel dam (C3).
14. methods as claimed in claim 13, wherein, described nickel dam (C3) comprises micropore or microfracture nickel dam.
15. methods as described in claim 13 or 14, wherein, described tack coat (C1) is nickel dam.
16. methods according to any one of claim 13 to 15, wherein, described strengthening layer (C2) is layers of copper.
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WO2014174189A2 (en) 2014-10-30
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