ES2304858A1 - Procedure of selective metalization of crombal plastics (Machine-translation by Google Translate, not legally binding) - Google Patents
Procedure of selective metalization of crombal plastics (Machine-translation by Google Translate, not legally binding) Download PDFInfo
- Publication number
- ES2304858A1 ES2304858A1 ES200602681A ES200602681A ES2304858A1 ES 2304858 A1 ES2304858 A1 ES 2304858A1 ES 200602681 A ES200602681 A ES 200602681A ES 200602681 A ES200602681 A ES 200602681A ES 2304858 A1 ES2304858 A1 ES 2304858A1
- Authority
- ES
- Spain
- Prior art keywords
- stage
- nickel
- abs
- metallization
- plastics
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001465 metallisation Methods 0.000 title claims abstract description 26
- 239000004033 plastic Substances 0.000 title claims abstract description 24
- 229920003023 plastic Polymers 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 18
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 46
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 23
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000000126 substance Substances 0.000 claims abstract description 14
- 239000011651 chromium Substances 0.000 claims abstract description 12
- 239000004952 Polyamide Substances 0.000 claims abstract description 9
- 229920002647 polyamide Polymers 0.000 claims abstract description 9
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052802 copper Inorganic materials 0.000 claims abstract description 6
- 239000010949 copper Substances 0.000 claims abstract description 6
- 239000003973 paint Substances 0.000 claims abstract description 6
- 238000007649 pad printing Methods 0.000 claims abstract description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 18
- 238000013019 agitation Methods 0.000 claims description 14
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 9
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 6
- ACVYVLVWPXVTIT-UHFFFAOYSA-M phosphinate Chemical compound [O-][PH2]=O ACVYVLVWPXVTIT-UHFFFAOYSA-M 0.000 claims description 6
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 claims description 5
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 239000003906 humectant Substances 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 2
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 claims description 2
- 230000004913 activation Effects 0.000 claims description 2
- 230000003750 conditioning effect Effects 0.000 claims description 2
- 229910000365 copper sulfate Inorganic materials 0.000 claims description 2
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 2
- 238000006386 neutralization reaction Methods 0.000 claims description 2
- 238000000643 oven drying Methods 0.000 claims description 2
- 235000006408 oxalic acid Nutrition 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- 239000011734 sodium Substances 0.000 claims description 2
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 claims description 2
- 239000002904 solvent Substances 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims description 2
- 230000006641 stabilisation Effects 0.000 claims description 2
- 238000011105 stabilization Methods 0.000 claims description 2
- HPGGPRDJHPYFRM-UHFFFAOYSA-J tin(iv) chloride Chemical compound Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 0.000 claims description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims 2
- 230000002378 acidificating effect Effects 0.000 claims 1
- 239000012041 precatalyst Substances 0.000 claims 1
- 239000011780 sodium chloride Substances 0.000 claims 1
- 239000004417 polycarbonate Substances 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 4
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 description 3
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 3
- 239000004327 boric acid Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- LGQLOGILCSXPEA-UHFFFAOYSA-L nickel sulfate Chemical compound [Ni+2].[O-]S([O-])(=O)=O LGQLOGILCSXPEA-UHFFFAOYSA-L 0.000 description 2
- 229910000363 nickel(II) sulfate Inorganic materials 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004909 Moisturizer Substances 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- NTXGQCSETZTARF-UHFFFAOYSA-N buta-1,3-diene;prop-2-enenitrile Chemical compound C=CC=C.C=CC#N NTXGQCSETZTARF-UHFFFAOYSA-N 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- PYRZPBDTPRQYKG-UHFFFAOYSA-N cyclopentene-1-carboxylic acid Chemical compound OC(=O)C1=CCCC1 PYRZPBDTPRQYKG-UHFFFAOYSA-N 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000001333 moisturizer Effects 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- BFXAWOHHDUIALU-UHFFFAOYSA-M sodium;hydron;difluoride Chemical compound F.[F-].[Na+] BFXAWOHHDUIALU-UHFFFAOYSA-M 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
- B44C1/24—Pressing or stamping ornamental designs on surfaces
-
- 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
- C25D5/02—Electroplating of selected surface areas
-
- 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
- C25D5/54—Electroplating of non-metallic surfaces
- C25D5/56—Electroplating of non-metallic surfaces of plastics
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemically Coating (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
Description
Procedimiento de metalización selectiva de plásticos cromables.Selective metallization procedure of chromable plastics.
La presente invención se refiere a un procedimiento de metalización selectiva de plásticos, concretamente de plásticos cromables tales como poliamidas, ABS, ABS/PC y similares, para mejorar el acabado superficial de dichos plásticos, y más concretamente para obtener motivos con relieve.The present invention relates to a selective plating process of plastics, specifically of chromizable plastics such as polyamides, ABS, ABS / PC and similar, to improve the surface finish of said plastics, and more specifically to obtain motifs with relief.
El objeto de la invención es combinar metal con pintura en el revestimiento de las piezas plásticas, consiguiéndose para las mismas una mayor variedad en el dibujo y un mayor abanico de aplicaciones y usos industriales para la pieza final.The object of the invention is to combine metal with paint on the lining of the plastic parts, getting for them a greater variety in the drawing and a greater fan of applications and industrial uses for the final piece.
Es sobradamente y utilizada la técnica para mejorar el aspecto de piezas de naturaleza plástica consistente en efectuar un cromado de las mismas que le confiera un aspecto metálico.The technique is widely and used to improve the appearance of plastic parts consisting of make a chrome plating that gives it an appearance metal.
También es conocido someter a estas piezas plásticas y cromadas a un proceso de tampografía, para seguir mejorando su aspecto, pero evidentemente el mercado está a la expectativa de nuevas técnicas que permitan seguir mejorando en esta línea, es decir que permitan ofrecer al mercado piezas plásticas con mejor aspecto.It is also known to submit these pieces plastic and chrome plated to a pad printing process, to follow improving its appearance, but obviously the market is at expectation of new techniques that allow to continue improving in this line, that is to say that allow to offer to the market plastic pieces With better appearance.
El procedimiento de metalización selectiva que la invención propone constituye un nuevo avance tecnológico en este campo, y que resulta especialmente aplicable, como anteriormente se ha dicho, a tres tipos de plásticos: poliamidas (40% de carga mineral), ABS (polímero de Acrilo-Nitrilo-Butadieno-Estireno) o ABS/PC (ABS con policarbonato 45%/65%).The selective metallization process that the invention proposes constitutes a new technological advance in this field, and that is especially applicable, as previously He said, to three types of plastics: polyamides (40% load mineral), ABS (polymer Acrylonitrile Butadiene Stirene) or ABS / PC (ABS with 45% / 65% polycarbonate).
A partir de una cualquiera de estas materias primas, en el procedimiento que la invención propone se establecen las siguientes fases operativas:From any one of these subjects premiums, in the procedure that the invention proposes are established The following operational phases:
- --
- Una primera fase de metalización química en la que las piezas plásticas son pre-tratadas realizando una metalización con níquel.A first phase of chemical metallization in which the plastic parts they are pre-treated by metallizing with nickel.
- --
- Una segunda fase de aplicación de pintura mediante tampografía.A second phase of paint application by pad printing.
- --
- Una tercera fase de secado y curado, en la que las piezas se secan durante un tiempo de 24 horas a una temperatura comprendida entre 45 y 55ºC, tras lo que lleva a cabo una estabilización a temperatura ambiente durante un periodo comprendido entre 3 y 7 días.A third phase of drying and curing, in which the pieces are dried for a time of 24 hours at a temperature between 45 and 55 ° C, after which it performs a stabilization at room temperature for a period between 3 and 7 days.
- --
- Una cuarta y última fase de metalización electrolítica, que constituye la fase crítica del proceso y que incluye una primera capa de cobre, a continuación una segunda capa de níquel y finalmente una capa de cromo.A fourth and final phase of electrolytic metallization, which constitutes the critical phase of the process and that includes a first layer of copper, then a second layer of nickel and finally a chrome layer
En esta última fase operativa se lleva a cabo en bastidores que permitan un distanciamiento adecuado entre piezas para asegurar una correcta distribución de corriente en los baños electrolíticos.In this last operational phase it is carried out in racks that allow adequate spacing between parts to ensure proper distribution of current in the bathrooms electrolytic
La primera fase operativa del procedimiento, la de metalización química, es ligeramente diferente en función del tipo de materia prima utilizada, es decir en función del tipo de plástico al que se aplica el procedimiento.The first operational phase of the procedure, the of chemical metallization, it is slightly different depending on the type of raw material used, that is, depending on the type of plastic to which the procedure applies.
Concretamente cuando se utiliza como materia prima el ABS o el ABS/PC, en esta fase de metalización química se producen a su vez las siguientes etapas:Specifically when used as matter ABS or ABS / PC premium, in this phase of chemical metallization They produce the following stages:
- --
- Mordentado: El tiempo de tratamiento es del orden de 16 minutos para el ABS y de 20 minutos para el compuesto ABS/PC, y en cualquier caso dicho mordentado se lleva a cabo a una temperatura comprendida entre 65º-70ºC. Para ello se utilizan concentraciones de 390 g/l de ácido crómico, 400 g/l de ácido sulfúrico y 15 g/l de cromo (Cr^{3+}). Se efectúa una agitación moderada con aire y el tipo de tratamiento es el adecuado para asegurar la total metalización de la pieza, en función de las características de la misma.Biting: The treatment time is of the order of 16 minutes for the ABS and 20 minutes for the ABS / PC compound, and in any case said bite is taken to out at a temperature between 65º-70ºC. To do this use concentrations of 390 g / l of chromic acid, 400 g / l of sulfuric acid and 15 g / l chromium (Cr 3+). One is done moderate agitation with air and the type of treatment is appropriate to ensure the total metallization of the piece, depending on the characteristics of it.
- --
- Seguidamente se realiza un segundo baño de la pieza con un baño de mordentado diluido, en relación 1:20 aproximadamente.Then a second bath is done of the piece with a diluted bite bath, in relation 1:20 approximately.
- --
- Se efectúa seguidamente un lavado en spray y a continuación un lavado en cascada, consistente en dos tinas con agua de lavado en contracorriente.Be then perform a spray wash and then a wash cascading, consisting of two tubs with wash water in countercurrent
- --
- Una tapa de neutralización a base de 100 ml/l de HCI, y 20 ml/l de un agente neutralizante de Cr, sometiéndolo a una fuerte agitación con aire.A neutralization cap based on 100 ml / l of HCI, and 20 ml / l of a Cr neutralizing agent, subjecting it to strong agitation with air.
- --
- Se procede seguidamente a un nuevo lavado en cascada.Be then proceed to a new cascade wash.
- --
- Se lleva a cabo a continuación una fase de precatalización, con un tiempo de tratamiento comprendido entre 15 y 30 segundos, a temperatura ambiente, utilizando para ello cloruro de estaño con una concentración comprendida del 0,7 y 0,9 g/l y HCI en una concentración de 290 ml/l.Be then carries out a precatalization phase, with a treatment time between 15 and 30 seconds, at room temperature, using tin chloride with a concentration of 0.7 and 0.9 g / l and HCI in one 290 ml / l concentration.
- --
- Seguidamente se produce una etapa de catalización, durante un tiempo de tratamiento comprendido entre 3 y 4 minutos y a una temperatura comprendida entre 22 y 24ºC, utilizando para ello estaño en una concentración de 2,2 g/l, ácido clorhídrico en una concentración de 3,2N, y un catalizador con paladio en una concentración de 3,5 ml/l, y ello mediante agitación mecánica.Then there is a stage of catalyzing, during a treatment time between 3 and 4 minutes and at a temperature between 22 and 24 ° C, using tin in a concentration of 2.2 g / l, acid hydrochloric in a concentration of 3.2N, and a catalyst with palladium in a concentration of 3.5 ml / l, and this by stirring mechanics.
- --
- En una siguiente etapa la pieza es sometida a los efectos de un acelerador, durante un tiempo de tratamiento comprendido entre 2 y 4 minutos y a una temperatura a su vez comprendida entre 43º y 47ºC, utilizándose un agente acelerador con ácido oxálico en concentraciones comprendidas entre 60 y 90 g/l y con una normalidad de cloruros comprendida entre 0,5 y 0,8N, efectuándose una agitación suave con aire.In a next stage the piece is subjected to the effects of a accelerator, during a treatment time between 2 and 4 minutes and at a temperature between 43º and 47ºC, using an accelerating agent with oxalic acid in concentrations between 60 and 90 g / l and with normal of chlorides between 0.5 and 0.8N, with stirring soft with air.
- --
- Seguidamente la pieza se somete a una fase de tratamiento con níquel químico, durante un tiempo del orden de 6 minutos, con una temperatura comprendida entre 23º y 25ºC y un pH comprendido a su vez comprendido entre 8,8 y 9,2. El níquel participa en una proporción comprendida entre 2,5 y 3 g/l, con incorporación también de hipofosfito en una proporción comprendida entre 20 y 30 g/l y a su vez con una relación entre níquel e hipofosfito de 8:10. Se realiza una agitación mecánica, con una actividad del baño normal/media, procediéndose seguidamente a un nuevo lavado en cascada y a una fase final de secado.Then the piece is subjected to a chemical nickel treatment phase, during order time 6 minutes, with a temperature between 23º and 25ºC and a pH in turn comprised between 8.8 and 9.2. Nickel participates in a proportion between 2.5 and 3 g / l, with incorporation also of hypophosphite in a proportion comprised between 20 and 30 g / l and in turn with a relationship between nickel e hypophosphite of 8:10. A mechanical agitation is performed, with a normal / average bath activity, then proceeding to a New waterfall wash and a final drying phase.
Si por el contrario se utiliza como materia prima una poliamida, la fase de metalización química es similar a la anterior, con la salvedad de que se utiliza, productos específicos para éste tipo de plástico. Concretamente en la metalización química de la poliamida participan las siguientes etapas:If instead it is used as matter a polyamide cousin, the chemical metallization phase is similar to the previous one, with the exception that it is used, products specific for this type of plastic. Specifically in the Chemical metallization of polyamide involved the following stages:
- --
- Ataque químico durante un tiempo de tratamiento comprendido entre 6 y 9 minutos y a una temperatura comprendida entre 35 y 40ºC, utilizando para ello Sweller ( ataque con solvente) en una proporción comprendida entre 40 y 70 ml/l, y ácido clorhídrico en una proporción comprendida entre 100 y 120 ml/l, tras lo que se realiza un lavado en cascada.Attack chemical during a treatment time between 6 and 9 minutes and at a temperature between 35 and 40 ° C, using for this Sweller (solvent attack) in a proportion between 40 and 70 ml / l, and hydrochloric acid in one proportion between 100 and 120 ml / l, after what is done a waterfall wash.
- --
- Acondicionamiento durante un tiempo de tratamiento comprendido entre 5 y 7 minutos y a un a temperatura a su vez comprendida entre 44 y 46ºC, utilizando en esta etapa HCl en concentración de 100 acondicionador en concentración de 100 y difluoruro de sodio en concentración de 25 g/l, efectuándose también finalmente otro lavado en cascada.Conditioning for a time of treatment between 5 and 7 minutes and at a temperature at in turn between 44 and 46 ° C, using at this stage HCl in concentration of 100 conditioner in concentration of 100 and sodium difluoride in concentration of 25 g / l, being carried out also finally another waterfall wash.
- --
- Etapa de catalización durante un tiempo comprendido entre 4 y 5 minutos y a una temperatura del orden de 35ºC, utilizando para ello ácido clorhídrico con una concentración comprendida entre 60 y 80 ml/l y catalizador con una concentración de 27 ml/l, llevándose a cabo la catalización con agitación mecánica del bastidor y efectuándose seguidamente un lavado en cascada.Stage of catalyst for a time between 4 and 5 minutes and at a temperature of the order of 35 ° C, using acid hydrochloric with a concentration between 60 and 80 ml / l and catalyst with a concentration of 27 ml / l, the Catalyst with mechanical stirring of the frame and taking place then a waterfall wash.
- --
- Etapa de reducción con un tiempo de tratamiento comprendido entre 2 y 3 minutos con una temperatura a su vez comprendida entre 49 y 51ºC, utilizándose para ello un agente reductor con base en hipofosfito en una concentración comprendida entre 25 y 32 g/l, efectuándose seguidamente un nuevo lavado en cascada.Stage reduction with a treatment time between 2 and 3 minutes with a temperature in turn between 49 and 51 ° C, using a reducing agent based on hypophosphite in a concentration between 25 and 32 g / l, taking place then a new waterfall wash.
- --
- Etapa de aplicación de Níquel químico, con un tiempo de tratamiento comprendido entre 10 y 12 minutos a una temperatura a su vez comprendida entre 50 y 55ºC y con un pH comprendido entre 6,2 y 6,5, utilizándose específicamente níquel en concentraciones comprendidas entre 2,5 y 3 g/l, e hipofosfito en concentraciones a su vez comprendidas entre 16 y 20 g/l. Se efectúa seguidamente una agitación mecánica con actividad del baño media/alta, y un nuevo lavado en cascada, tras el que se efectúa el secado.Stage Application of chemical nickel, with a treatment time between 10 and 12 minutes at a temperature in turn between 50 and 55 ° C and with a pH between 6.2 and 6.5, specifically using nickel in concentrations between 2.5 and 3 g / l, and hypophosphite in concentrations at in turn between 16 and 20 g / l. Then a mechanical agitation with medium / high bath activity, and a new cascade washing, after which drying takes place.
Sin embargo la fase de metalización electrolítica es común para los tres tipos de plástico repetidamente citados, es decir tanto para la poliamida como para el ABS y para el ABS/PC.However the metallization phase Electrolytic is common for all three types of plastic repeatedly cited, that is, both for polyamide and for the ABS and for the ABS / PC.
Concretamente en dicha metalización electrolítica se establecen las siguientes etapas:Specifically in said metallization The following stages are electrolytic:
- --
- Activación sulfúrica mediante inmersión durante un tiempo del orden de 1 minuto y a temperatura ambiente, en ácido sulfúrico con una concentración de 30 ml/l, y un producto humectante en concentración a su vez de 1 ml/l.Sulfuric activation by immersion for a time of the order of 1 minute and at room temperature, in sulfuric acid with a concentration of 30 ml / l, and a product moisturizer in turn concentration of 1 ml / l.
- --
- En la siguiente etapa se lleva a cabo un tratamiento con cobre ácido, durante 40 minutos y a temperatura ambiente, utilizando para ello sulfato de cobre en concentración comprendida entre 180 y 200 ácido sulfúrico en concentración comprendida entre 70 y 80 g/l, cloruro de sodio en concentración comprendida entre 90 y 110 mg/l, humectante en concentración comprendida entre 8 y 10 ml/l, abrillantador en proporción comprendida entre 0,4 y 0,6 ml/l, y nivelante en una proporción comprendida entre 0,4 y 0,6 ml/l, y todo ello con una densidad de corriente del orden de 2 A/dm^{2} para evitar sobre espesores de cobre, ya que esto se traduce en cambios bruscos en la superficie pintada y metalizada, formando escalones inaceptables estéticamente. Se efectúa seguidamente un lavado en cascada.In the next stage a treatment with acid copper is carried out, for 40 minutes and at room temperature, using it copper sulfate in concentration between 180 and 200 acid sulfuric acid in a concentration between 70 and 80 g / l, chloride of sodium in a concentration between 90 and 110 mg / l, humectant in concentration between 8 and 10 ml / l, brightener in proportion between 0.4 and 0.6 ml / l, and leveling in a proportion between 0.4 and 0.6 ml / l, and all this with a current density of the order of 2 A / dm 2 for avoid over copper thicknesses, as this results in changes brusque on the painted and metallic surface, forming steps aesthetically unacceptable. A wash is then carried out in waterfall.
- --
- A continuación se efectúa una etapa de tratamiento con níquel semi-brillante, durante un tiempo comprendido entre 12 y 18 minutos y a una temperatura comprendida entre 58 y 62ºC, con una densidad de corriente comprendida entre 3 y 6 A/dm^{2} y con una agitación moderada con aire, utilizando para ello sulfato de níquel en una concentración comprendida entre 270 y 300 g/l, cloruro de níquel en una concentración comprendida entre 50 y 60 gil, ácido bórico en una concentración comprendida entre 40 y 45 g/l, abrillantador en una proporción comprendida 0,5 y 1 ml/l, y un producto humectante con una proporción comprendida entre 3,5 y 4,5 ml/l, todo ello con un pH de 3,8.TO then a nickel treatment stage is carried out semi-bright, for a time between 12 and 18 minutes and at a temperature between 58 and 62 ° C, with a current density between 3 and 6 A / dm 2 and with moderate agitation with air, using sulfate of nickel in a concentration between 270 and 300 g / l, nickel chloride in a concentration between 50 and 60 gil, boric acid in a concentration between 40 and 45 g / l, brightener in a proportion between 0.5 and 1 ml / l, and a moisturizing product with a proportion between 3.5 and 4.5 ml / l, all with a pH of 3.8.
Si se pretende obtener el aspecto de níquel satinado con acabado Velours, el tiempo de tratamiento se reduce, con valores comprendidos entre 6 y 12 minutos y la temperatura también se reduce ligeramente, quedando comprendida entre 58 y 60ºC, utilizando sulfato de níquel comprendido en proporciones comprendidas entre 250 y 290 g/l, cloruro de níquel en proporciones comprendidas entre 45 y 65 g/l, ácido bórico en proporciones comprendidas entre 35 y 45 g/l, un pH comprendido entre 4,3 y 4,5 y un aditivo satinante en proporción de 1 ml/l, la cual puede variar positiva o negativamente en función de las necesidades de cada caso.If you want to get the nickel look Satin with Velours finish, the treatment time is reduced, with values between 6 and 12 minutes and the temperature it is also reduced slightly, being between 58 and 60 ° C, using nickel sulfate in proportions between 250 and 290 g / l, nickel chloride in proportions between 45 and 65 g / l, boric acid in proportions between 35 and 45 g / l, a pH between 4.3 and 4.5 and a satin additive in proportion of 1 ml / l, which may vary positively or negatively depending on the needs of each case.
Si se pretende la obtención de níquel satinado intenso el tiempo de tratamiento está comprendido entre 7 y 10 minutos, la temperatura entre 50 y 55ºC y se utiliza sulfato de níquel en concentraciones comprendidas entre 425 y 450 g/l, cloruro de níquel en concentraciones comprendidas entre 28 y 40 g/l, ácido bórico en proporciones comprendidas entre 33 y 42 g/l, aditivo satinante en concentración del orden de 0,4 m/l, y un pH comprendido entre 4 y 4,5.If it is intended to obtain satin nickel Intense treatment time is between 7 and 10 minutes, the temperature between 50 and 55 ° C and sulfate is used nickel in concentrations between 425 and 450 g / l, chloride of nickel in concentrations between 28 and 40 g / l, acid boric in proportions between 33 and 42 g / l, additive satingent in concentration of the order of 0.4 m / l, and a pH included between 4 and 4.5.
Si se pretende la obtención de níquel brillante, el tiempo de tratamiento está comprendido entre 6 y 9 minutos, la temperatura entre 55 y 60ºC, con una densidad de comente comprendida a su vez entre 2,2 y 2,8 A/dm^{2}, con una agitación moderada con aire y utilizando sulfato de níquel en concentraciones comprendidas entre 270 y 300 g/l, cloruro de níquel en concentraciones comprendidas entre 50 y 60 g/l, ácido bórico en concentraciones comprendidas entre 40 y 45 g/l, un pH comprendido entre 3,8 y 4,5, abrillantador en concentración del orden de 1 ml/l, y humectante en concentración del orden de 3,5 ml/l.If it is intended to obtain bright nickel, the treatment time is between 6 and 9 minutes, the temperature between 55 and 60ºC, with a density of comment in turn between 2.2 and 2.8 A / dm 2, with stirring Moderated with air and using nickel sulfate in concentrations between 270 and 300 g / l, nickel chloride in concentrations between 50 and 60 g / l, boric acid in concentrations between 40 and 45 g / l, a pH between between 3.8 and 4.5, brightener in concentration of the order of 1 ml / l, and humectant in concentration of the order of 3.5 ml / l.
En cualquier caso se efectúa seguidamente un lavado en cascada.In any case, a cascade wash.
Si se pretende un acabado en cromo, el tiempo de tratamiento es del tiempo de 4 minutos y a una temperatura comprendida entre 40 y 45ºC, utilizando para ello ácido crómico en concentraciones comprendidas entre 250 y 270 g/l, ácido sulfúrico en concentraciones comprendidas entre 1,3 y 1,5 g/l y cromo (Cr^{3+}) en concentración del orden de 5 g/l, con una relación entre el ácido crómico y el sulfúrico 6,5:8 cm (según test Célula Hull) y con una densidad de corriente comprendida entre 8 y 11 A/dm^{2}, densidad que no puede ser sobrepasada ya que la pintura pierde adherencia y se forman ampollas, mientras que con una densidad de comente por debajo de la citada las piezas salen amarillentas.If a chrome finish is intended, the time of treatment is time of 4 minutes and at a temperature between 40 and 45 ° C, using chromic acid in concentrations between 250 and 270 g / l, sulfuric acid in concentrations between 1.3 and 1.5 g / l and chromium (Cr 3+) in concentration of the order of 5 g / l, with a ratio between chromic acid and sulfuric acid 6.5: 8 cm (according to the Cell test Hull) and with a current density between 8 and 11 A / dm 2, density that cannot be exceeded since the paint loses adhesion and blisters form, while with a comment density below the quoted parts come out yellowish
- --
- Seguidamente se trata el producto con agua de recuperación durante un tiempo aproximado de 1 minuto y a temperatura ambiente, con un baño de cromo diluido en proporción aproximada 1:20.The product is then treated with recovery water for an approximate time of 1 minute and at room temperature, with a chrome bath diluted in proportion Approximate 1:20.
- --
- Seguidamente se establece una etapa pre-reducción, con un tiempo de tratamiento de dos minutos a temperatura ambiente y con bisulfito de sodio en concentración de 14 ml/l, con agitación moderada con aire.Then a stage is established pre-reduction, with a treatment time of two minutes at room temperature and with sodium bisulfite in concentration of 14 ml / l, with moderate agitation with air.
- --
- A continuación se efectúa una reducción crómica durante un tiempo del tratamiento comprendido entre 2 y 4 minutos y a una temperatura comprendida entre 53 y 57ºC, utilizando un agente reductor de cromo en concentración comprendida entre 14 y 16 m/l y también con agitación moderada con aire.TO a chromic reduction is then carried out for a period of treatment between 2 and 4 minutes and at a temperature between 53 and 57 ° C, using a chromium reducing agent in concentration between 14 and 16 m / l and also with moderate agitation with air.
- --
- Finalmente se lleva a cabo una etapa de secado en estufa, a una temperatura comprendida entre 65 y 75ºC durante un tiempo del orden de 10 minutos, para dejar finalmente estabilizar al menos otros 10 minutos a temperatura ambiente.Finally a stage of oven drying, at a temperature between 65 and 75 ° C for a time of the order of 10 minutes, to finally leave stabilize at least another 10 minutes at temperature ambient.
Claims (5)
- --
- Metalización química, en la que las piezas plásticas son pre-tratadas con níquel.Chemical metallization, in which the plastic parts are pre-treated with nickel.
- --
- Aplicación de pintura mediante tampografía de las piezas plásticas previamente metalizadas.Paint application by pad printing of plastic parts previously metallized
- --
- Secado de las piezas durante 24 horas a una temperatura comprendida entre 45 y 55ºC y estabilización a temperatura ambiente durante un periodo comprendido entre 3 y 7 días.Drying of the pieces for 24 hours at a temperature between 45 and 55 ° C and stabilization at room temperature during a period between 3 and 7 days.
- --
- Metalización electrolítica con aplicación de una primera capa de cobre, una segunda capa de níquel y, finalmente, una capa de cromo.Electrolytic metallization with application of a first layer of copper, a second layer of nickel and finally a layer of chrome.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES200602681A ES2304858B1 (en) | 2006-10-20 | 2006-10-20 | SELECTIVE METALIZATION PROCEDURE OF CHROMABLE PLASTICS. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES200602681A ES2304858B1 (en) | 2006-10-20 | 2006-10-20 | SELECTIVE METALIZATION PROCEDURE OF CHROMABLE PLASTICS. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ES2304858A1 true ES2304858A1 (en) | 2008-10-16 |
| ES2304858B1 ES2304858B1 (en) | 2009-10-30 |
Family
ID=39796997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES200602681A Expired - Fee Related ES2304858B1 (en) | 2006-10-20 | 2006-10-20 | SELECTIVE METALIZATION PROCEDURE OF CHROMABLE PLASTICS. |
Country Status (1)
| Country | Link |
|---|---|
| ES (1) | ES2304858B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016185044A1 (en) | 2015-05-20 | 2016-11-24 | Valeo Iluminacion | Metallised plastic part for a motor vehicle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2058476A1 (en) * | 1970-11-27 | 1972-08-10 | Wmf Wuerttemberg Metallwaren | Selective plating on plastic - using lacquer to protect areas to be kept free of metal |
| US4335164A (en) * | 1978-12-19 | 1982-06-15 | Crown City Plating Co. | Conditioning of polyamides for electroless plating |
| US4600480A (en) * | 1985-05-09 | 1986-07-15 | Crown City Plating | Method for selectively plating plastics |
| EP0533575A1 (en) * | 1991-09-17 | 1993-03-24 | Hydro-Quebec | Plastic-supported metallic strip manufactured by metallising-plating |
| GB2287472A (en) * | 1994-03-15 | 1995-09-20 | Univ Singapore | Selective metallisation of insulating substrates by printing surface with carbon-based ink catalyst and electroless and electrolytic plating |
| WO2003096859A2 (en) * | 2002-05-17 | 2003-11-27 | Hansgrohe Ag | Method for producing galvanised sanitary objects made of plastic |
-
2006
- 2006-10-20 ES ES200602681A patent/ES2304858B1/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2058476A1 (en) * | 1970-11-27 | 1972-08-10 | Wmf Wuerttemberg Metallwaren | Selective plating on plastic - using lacquer to protect areas to be kept free of metal |
| US4335164A (en) * | 1978-12-19 | 1982-06-15 | Crown City Plating Co. | Conditioning of polyamides for electroless plating |
| US4600480A (en) * | 1985-05-09 | 1986-07-15 | Crown City Plating | Method for selectively plating plastics |
| EP0533575A1 (en) * | 1991-09-17 | 1993-03-24 | Hydro-Quebec | Plastic-supported metallic strip manufactured by metallising-plating |
| GB2287472A (en) * | 1994-03-15 | 1995-09-20 | Univ Singapore | Selective metallisation of insulating substrates by printing surface with carbon-based ink catalyst and electroless and electrolytic plating |
| WO2003096859A2 (en) * | 2002-05-17 | 2003-11-27 | Hansgrohe Ag | Method for producing galvanised sanitary objects made of plastic |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016185044A1 (en) | 2015-05-20 | 2016-11-24 | Valeo Iluminacion | Metallised plastic part for a motor vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2304858B1 (en) | 2009-10-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES2420912T3 (en) | Chemical conversion coating agent and surface treated metal | |
| JP4738747B2 (en) | Black film agent and black film forming method | |
| HK1250523A1 (en) | Composition for etching treatment of resin material | |
| ES2304858B1 (en) | SELECTIVE METALIZATION PROCEDURE OF CHROMABLE PLASTICS. | |
| CN107794555A (en) | A kind of pre-treating technology of the double-colored plating of automobile decoration piece | |
| BR0317395A (en) | Structurally modified silica | |
| EP3045564A1 (en) | Treatment liquid for black trivalent chromium conversion coating, trivalent chromium-containing water-soluble liquid for finishing treatment, and method of treatment of metal substrate | |
| ES2689407T3 (en) | Treatment of plastic surfaces after chemical attack in a medium containing nitric acid | |
| CN110573657A (en) | Composition for pretreatment of electroless plating, pretreatment method of electroless plating, method of electroless plating | |
| CN103266313B (en) | A kind of electrogalvanizing environmental protection passivating solution and using method thereof | |
| JP2011012318A (en) | Magnesium alloy member | |
| AR071084A1 (en) | METHOD FOR THE PRODUCTION OF SUCRALOSE | |
| JPH05148686A (en) | Method for electroplating of impact-resistant plastic | |
| ES2304857B1 (en) | METHOD OF SELECTIVE METALIZATION OF CHROMABLE PLASTICS. | |
| JP2017025382A (en) | Black glossy tin-nickel alloy plating bath, tin-nickel alloy plating method, black glossy tin-nickel alloy plating film, and article having said film | |
| JPS6036471B2 (en) | Surface treatment method for polyacetal resin | |
| CN107119292A (en) | A kind of nickel plating solution and the method for nickel plating | |
| BRPI0606419A2 (en) | Electroplating method and pretreatment of aluminum parts | |
| JP2000212759A (en) | Plated product of urethane resin and its plating method | |
| CN100500939C (en) | Copper red process of chemical method on tool steel parts | |
| CN1142319C (en) | Environment-protecting type microcrystal alloy plating solution | |
| JP3772321B2 (en) | Chemical conversion treatment agent and chemical conversion treatment method for zinc or zinc alloy plating | |
| TR2021016395A2 (en) | METHOD OF CHEMICAL ABRASION OF THE SURFACES OF PLASTIC MATERIALS TO BE COATED WITH METAL WITH A CHROME-FREE APPROACH | |
| JPH11181578A (en) | Metallic surface treating agent and treatment | |
| MX2009005375A (en) | Sulphuration method of ferrous alloy parts in an aqueous solution<0}. |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EC2A | Search report published |
Date of ref document: 20081016 Kind code of ref document: A1 |
|
| FD2A | Announcement of lapse in spain |
Effective date: 20180912 |