CN110382746A - The method for manufacturing plastic member that corrosion resistant and optional chromatic metallic coats and decorative - Google Patents

The method for manufacturing plastic member that corrosion resistant and optional chromatic metallic coats and decorative Download PDF

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Publication number
CN110382746A
CN110382746A CN201880008020.XA CN201880008020A CN110382746A CN 110382746 A CN110382746 A CN 110382746A CN 201880008020 A CN201880008020 A CN 201880008020A CN 110382746 A CN110382746 A CN 110382746A
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China
Prior art keywords
aluminium
deposition
layer
component
metal layer
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CN201880008020.XA
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Chinese (zh)
Inventor
D.基斯利希
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GERHARDI PLASTICS ENGINEERING GmbH
Gerhardi Kunststofftechnik GmbH
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GERHARDI PLASTICS ENGINEERING GmbH
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Publication of CN110382746A publication Critical patent/CN110382746A/en
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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
    • C23C18/2006—Pretreatment of the material to be coated of organic surfaces, e.g. resins by other methods than those of C23C18/22 - C23C18/30
    • C23C18/2013—Pretreatment of the material to be coated of organic surfaces, e.g. resins by other methods than those of C23C18/22 - C23C18/30 by mechanical pretreatment, e.g. grinding, sanding
    • 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
    • C23C18/208—Multistep pretreatment with use of metal 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
    • 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
    • C23C18/31—Coating with metals
    • C23C18/32—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron
    • 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
    • C23C18/31—Coating with metals
    • C23C18/38—Coating with copper
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • C25D11/18—After-treatment, e.g. pore-sealing
    • C25D11/20—Electrolytic after-treatment
    • C25D11/22—Electrolytic after-treatment for colouring layers
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • C25D11/18—After-treatment, e.g. pore-sealing
    • C25D11/24—Chemical after-treatment
    • C25D11/243—Chemical after-treatment using organic dyestuffs
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • C25D11/18—After-treatment, e.g. pore-sealing
    • C25D11/24—Chemical after-treatment
    • C25D11/246—Chemical after-treatment for sealing layers
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/42—Electroplating: Baths therefor from solutions of light metals
    • C25D3/44—Aluminium
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/66—Electroplating: Baths therefor from melts
    • C25D3/665—Electroplating: Baths therefor from melts from ionic liquids
    • 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
    • C25D5/54—Electroplating of non-metallic surfaces
    • C25D5/56—Electroplating of non-metallic surfaces of plastics

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Electrochemistry (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Abstract

The present invention relates to a kind of methods of decorative plastic component (h) for manufacturing corrosion resistant and optional chromatic metallic coating, wherein component to be coated is manufactured with plastic injection molding process (a) by the plastics of electrodepositable first, and chemical pretreatment (b) then is carried out to it, the first conductive metal layer (c) and subsequent electroplating deposition aluminium (e) are deposited in chemical pretreatment.The aluminium surface of deposition is aoxidized into (f) in subsequent anode oxidation method.

Description

Manufacture plastic member that corrosion resistant and optional chromatic metallic coats and decorative Method
The present invention relates to a kind of method of decorative plastic component for manufacturing the coating of corrosion resistant and optional chromatic metallic, In component to be coated manufactured first with plastic injection molding process by the plastics of electrodepositable, and chemical pretreatment then is carried out to it, The first conductive metal layer and subsequent electroplating deposition aluminium are deposited in chemical pretreatment.
In the automotive industry, optics perception is improved using various and different decorative plastic members.This surface dress The conventional surface technology of the component of decorations property is that unadorned frosting is made by injection molding, will be to the frosting japanning The die surface unhairing of printing and etching simultaneously make its molding by plastic injection, and electroplating plastic surface passes through IMD(In Mold Dekoration it) is decorated in injection mold, wherein the printed matter imprinted on a carrier film passes through carrier foils in injection moulding process Molding, printed by injection molding (Hinterspritzen) after FIM technology and part are molding and embedding along the foil of profile molding Part is molded after foil insert-molding and metal foil.
In addition to all these traditional sufacings, the appearance that metal surface is presented has the trend of especially high demand, Because this surface, which is different from other surfaces, shows high-quality and firm perception.
Component in addition to being decorated with real metal, i.e., with thin stainless steel or aluminium flake veneer, engagement or rear injection molding Component, the plastic member for also metal particularly preferably being used to coat is as decoration element.
The coating method that optical metal surface may be implemented is, for example, to be vapor-deposited comprising PVD(physical vapour deposition (PVD)) Method and their improved technology, such as CVD(chemical vapor deposition) and PeCVD(plasma enhanced chemical vapor deposition) Deng.In this case, thin metal layer is deposited on plastic member in evacuating genuine vacuum chamber.Material to be deposited is Solid form.The material of evaporation is moved in coating room and is reached on component to be coated, wherein passing through precipitating forming layer.Although PVD method generally is suitable for generating metal layer, it has been demonstrated that of problems be, the very thin metal coating is in no volume Do not have enough intensity in the case where outer protective layer to wear-resistant and corrosion.For this reason, it needs to apply protection Layer, such as varnish system.In order to realize enough basic adhesivenesses on plastic member to be deposited, usually also need to coat viscous Attached promotor.
Another industrial very important coating is the electroplating deposition metal on plastic member.In this case, first It first passes through injection moulding process and component is for example manufactured by the copolymer containing butadiene such as ABS or ABS/PC.After injection moulding process, to structure Part carries out chemical pretreatment, to deposit to subsequent self-catalysis the first thin metal layer, usually thin nickel-or layers of copper on it.? In further electroplating process, then the other metal layer of electrolytic deposition, to the last usually terminates to be electroplated with the layers of chrome of deposition Process.
For all surfaces used, in addition to high esthetic requirement, it is necessary to there is high resistance for mechanical damage And with high resistance to medium, to meet in automobile exterior and the subsequent request in interior trim.
However, being also constantly present more personalized demand, designing technique freedom degree in addition to all these requirements to be met Demand and surface color and structure design demand.Especially in the case where the metal surface of such as electroplated coating, vapour Turner industry prefers to color flexibility, but so far in this respect in be severely limited.
The surface smoothness and color of traditional electroplating deposition are generally reached from high glaze, via different degrees of dimness Change, until the tone for passing through improved electrolyte and process slightly coal black and brown.
Metal on optics and tactile and colored surface usually only by the additional japanning that is expended on metal deposit or Optional additional coating but it is achievable, wherein the adhesiveness of paint layer or coating in layers of chrome is asking of must paying attention to always Topic, and the optics of basic surface and tactile perception are severely limited.The reason is that deposition layers of chrome be very inertia and Inactive, therefore (paint) layer cannot be maintained.
In order to show colour, metal type surface, such as can also be sunk using paint, gas phase in the case where height is expended The combination of product (such as PVD coating) and coloured (slightly colouring) paint.This technical description is in 102 33 120 A1 of DE In.Metal layer to be deposited directly can also be passed through special metal alloy to be deposited on substrate coloredly.In EP 2 369 032 A1 describes this mixing material.However, in this case, for promoting the priming paint of adherency and subsequent, i.e. varnish It is equally required.However, chromatography in this case is restricted and since paint layer reduces tactile sensation.
Present invention seek to address that such case.The object of the present invention is to provide a kind of corrosion resistant and optional mosaic golds of manufacture Belong to the method for the decorative plastic component coated, wherein passing through chemical and plating pretreatment and at least once plating metal deposition High-quality, corrosion resistant and optionally to be dyed decorative metals layer can be formed.
The purpose is realized by the method for the feature with claim 1.Accordingly, by the aluminium surface of deposition in subsequent sun It is aoxidized in the method for oxidation of pole.
The present invention provides a kind of method of decorative plastic component for manufacturing the coating of corrosion resistant and optional chromatic metallic, Wherein by chemistry and plating pretreatment and at least once plating metal deposition can be formed high-quality, it is corrosion resistant and Decorative metals layer optionally to be dyed.
Preferably, the chemical pretreatment is by selected technology using roughening, expansion and etch mechanically and chemically And other technologies are carried out with providing the adhesive mechanism for the first conductive metal layer.It is possible thereby to save traditional pretreatment Process simultaneously uses other preprocess methods.It has been confirmed that being handled by radiation, via chromatosulfuric acid using the acid of expansion and etch (traditional) applies the first conductive layer by PVD or is even mixed into conducting pigment and also obtains adhesiveness, thus building on it and Deposit the first conductive layer.
In an expansion scheme of the invention, the layer of anodic oxidation is densified.In the case where densification, pass through sun The hole that pole aoxidizes and opens is closed again.Thus insertion corrosive substance is prevented.
Other expansion schemes and embodiment of the invention are given in remaining dependent claims.It is shown in attached drawing A specific embodiment of the invention, is described more fully below.In figure:
Fig. 1 shows flow chart according to the method for the present invention.
For this purpose, component to be coated first with plastic injection molding process (a) by the plastics of electrodepositable (preferably by containing butadiene Copolymer such as ABS or ABS/PC) manufacture.After injection moulding process, in traditional plastic electroplating process (b) to the component into Row chemical pretreatment, so that the first thin metal layer (c) self-catalysis then is deposited on the surface of the processing, here usually one A thin nickel-or layers of copper.Self-catalysis (Greek of " die Selbstaufl sung ") refers to a kind of catalysis of special shape Reaction is learned, wherein final product plays the role of catalysts.Constantly accelerate to react and being formed continuously this catalyst.
In further electroplating process, then electrolysis applies at least one metal layer (d), or directly further Deposition of aluminum (e) in electro-plating method step, the aluminium can be oxidized to aluminium oxide (f) in the anode oxidation method below and appoint Selection of land is colored (g).
Therefore, according to the method and step, method of the invention is capable of providing the metal of corrosion resistant and optional colour The decorative plastic component (h) of coating.
In the electro-plating method step after chemical pretreatment, deposition of aluminum, the aluminium can be in anode oxidation method below In be oxidized to aluminium oxide and be optionally colored.
The aluminium is equally by electrolyte or the aluminium salt in organic solution and optionally by ionic liquid electroplating deposition.
Therefore, corrosion resistant, optional colour can be formed on plastic member according to method according to the method for the present invention With decorative coating for metal surfaces.
The electroplating process of the plastic electroplating for the electrolysis that the anode oxidation method describes before being similar in operation to, In usually at anode by direct current by alumina be melted into aluminium oxide (III).The alumina layer of conversion then has height corrosion resistant Corrosion simultaneously has fabulous optics perception.
Before the anode oxidation method, the component of aluminium coating generally goes through degreasing and etch to remove impurity, deposition Object and the oxide skin(coating) optionally formed.In the case where etch, existing small surface defect is eliminated by release liner, such as Groove, scratch, shrinkage cavity, field trash etc..
After the anodic oxidation, the component that can coat aluminium immerses in the dye solution of heat, then rinses.With this Method dye in the case where, dye molecule be mainly deposited in the upper area in the hole of anodic oxide coating and with oxide skin(coating) knot It closes.
Use the dyeing for the aluminium layer that inorganic dyestuff can equally be aoxidized.For this purpose, neutralizing, rinsing after the anodic oxidation The component, and it is dyed in dye bath with metal salt solution.The ion of solution accumulates in the hole of anodic oxide coating And become solid.
A possibility that another kind dyeing is Colinal- electrolytic method, and alternating voltage is used to carry out.Electrolyte includes dye The metal salt of color.Metal ion penetrates into the deep layer in the hole of the layer.Then this hole for being filled partially with metal passes through Absorb-and scattering effect and generate non-fading dyeing.Many different tones may be implemented.The duration of electrolysis depends on Required color depth.
Particularly attractive optical results are dyed by so-called interference and are realized, wherein being different from the dyeing skill of front Art, the color of aluminium by the heteroion being embedded in alumina layer, are not generated by the interference in alumina layer. In this case, being reflected on the thin layer of optically transparent material (such as oil film waterborne or as in situation lathery) Light often shows colored.This colour effect is also referred to as " iris ", this is because folding of the light on object thin surface layer The result penetrated and interfered.The object shows the colour of rainbow as a result,.Color depends on viewing angle.According to oxide skin(coating) Thickness degree and associated light resolution ratio, can generate with reproducing different colors (such as blue, green, grey or red Color).
The insertion of corrosive substance and for good and all lock color in order to prevent, it is necessary to densify the hole.By anodic oxygen Aluminium that is changing and may dyeing is densified by simple boiling in deionized water in last procedure of processing.This In the case of, boiling can be using hot water to the water of boiling.On the one hand, this can be by 55 to 85 DEG C of at a temperature of dip dyeing (absorption dyeing) Lai Jinhang, wherein the process can continue 15 to 30 minutes to 20 to 35 minutes.
After described densification can also in rear fine and close agent solution 90 to 100 DEG C at a temperature of carry out.For the processing, Every 1 μm of thickness degree needs about 3 minutes.Alternatively, the processing can be carried out in the hot water, and wherein hot water must be deionization Water.Temperature is similarly 90 to 100 DEG C, wherein the thickness degree for 1 μm also needs 3 minutes duration.

Claims (9)

1. the method for manufacturing the decorative plastic component (h) of corrosion resistant and optional chromatic metallic coating, wherein structure to be coated Part is manufactured with plastic injection molding process (a) by the plastics of electrodepositable first, and then carries out chemical pretreatment (b) to it, in chemistry The first conductive metal layer (c) and subsequent electroplating deposition aluminium (e) are deposited in pretreatment, which is characterized in that the aluminium surface of deposition exists (f) is aoxidized in subsequent anode oxidation method.
2. the method according to claim 1, wherein chemical pretreatment (b) is logical according to conventional plastic electroplating technology Cross following procedure progress:
Make surface roughening with oxidizing metal salts solution etch,
It is activated using metal kind crystalline substance, such as palladium, and
The chemical metallization (c) that self-catalysis carries out, to form the first conductive layer being made of copper, nickel or other metals.
3. the method according to claim 1, wherein the chemical pretreatment (b) uses according to selected technology Roughening, expansion and etch mechanically and chemically and other technologies to provide adhesive mechanism for the first conductive metal layer and It carries out.
4. method according to any of the preceding claims, which is characterized in that subsequent on pretreated component Apply at least one metal layer in first electrolysis electroplating process (d), on the metal layer the deposition of aluminum in another method and step (e).
5. according to the method described in claim 4, it is characterized in that, the aluminium deposits in electro-plating method step.
6. method according to any of the preceding claims, which is characterized in that in electricity on component pretreated in this way Direct precipitation aluminium (e) during electrolytic plating.
7. method according to any of the preceding claims, which is characterized in that, will in anode oxidation method below The alumina of deposition is melted into aluminium oxide (f).
8. the method according to the description of claim 7 is characterized in that the aluminium layer dyeing (g) that aluminium oxide will be oxidized to.
9. method according to any of the preceding claims, which is characterized in that densify the layer of anodic oxidation.
CN201880008020.XA 2017-01-23 2018-01-23 The method for manufacturing plastic member that corrosion resistant and optional chromatic metallic coats and decorative Pending CN110382746A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE202017000347.3 2017-01-23
DE202017000347.3U DE202017000347U1 (en) 2017-01-23 2017-01-23 Plastic component with galvanized and anodised surface for the presentation of optionally colored, corrosion-resistant, decorative metal layers
PCT/EP2018/051567 WO2018134436A1 (en) 2017-01-23 2018-01-23 Method for producing corrosion-stable and optionally colour/metallically coated and decorative plastic components

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CN110382746A true CN110382746A (en) 2019-10-25

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US (1) US20190345611A1 (en)
EP (1) EP3571335A1 (en)
CN (1) CN110382746A (en)
DE (1) DE202017000347U1 (en)
WO (1) WO2018134436A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4355927A2 (en) * 2021-06-19 2024-04-24 Gerhardi Kunststofftechnik GmbH Decorative plastic component and method for producing such a component
DE202021002143U1 (en) 2021-06-19 2021-10-13 Gerhardi Kunststofftechnik Gmbh Decorative plastic component with zinc, zinc-nickel or nickel coating for the representation of optionally colored, corrosion-resistant metal layers

Citations (2)

* Cited by examiner, † Cited by third party
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