CN113617610B - Method for preparing metallic luster faucet by coating brass or zinc alloy base material - Google Patents

Method for preparing metallic luster faucet by coating brass or zinc alloy base material Download PDF

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Publication number
CN113617610B
CN113617610B CN202111035324.5A CN202111035324A CN113617610B CN 113617610 B CN113617610 B CN 113617610B CN 202111035324 A CN202111035324 A CN 202111035324A CN 113617610 B CN113617610 B CN 113617610B
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China
Prior art keywords
coating
base material
faucet
brass
substrate
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CN202111035324.5A
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CN113617610A (en
Inventor
钟保民
王晓娇
张志文
曹伯兴
李智鸿
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Foshan Dongpeng Ceramic Co Ltd
Foshan Dongpeng Ceramic Development Co Ltd
Guangdong Dongpeng Holdings Co Ltd
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Foshan Dongpeng Ceramic Co Ltd
Foshan Dongpeng Ceramic Development Co Ltd
Guangdong Dongpeng Holdings Co Ltd
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Priority to CN202111035324.5A priority Critical patent/CN113617610B/en
Publication of CN113617610A publication Critical patent/CN113617610A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
    • B05D5/067—Metallic effect
    • B05D5/068—Metallic effect achieved by multilayers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/36—Successively applying liquids or other fluent materials, e.g. without intermediate treatment
    • B05D1/38—Successively applying liquids or other fluent materials, e.g. without intermediate treatment with intermediate treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/002—Pretreatement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • B05D3/0218—Pretreatment, e.g. heating the substrate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • B05D3/0254—After-treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
    • B05D7/16—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies using synthetic lacquers or varnishes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/56—Three layers or more
    • B05D7/58—No clear coat specified
    • B05D7/584—No clear coat specified at least some layers being let to dry, at least partially, before applying the next layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/56—Three layers or more
    • B05D7/58—No clear coat specified
    • B05D7/586—No clear coat specified each layer being cured, at least partially, separately
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/002—Priming paints
    • 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
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/0015—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterized by the colour of the layer
    • 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
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/0021—Reactive sputtering or evaporation
    • 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
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
    • C23C14/0635—Carbides
    • 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
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
    • C23C14/0641—Nitrides
    • 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
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
    • C23C14/08—Oxides
    • C23C14/083—Oxides of refractory metals or yttrium
    • 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
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
    • C23C14/14—Metallic material, boron or silicon
    • C23C14/16—Metallic material, boron or silicon on metallic substrates or on substrates of boron or silicon
    • 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
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
    • C23C14/24—Vacuum evaporation
    • C23C14/32—Vacuum evaporation by explosion; by evaporation and subsequent ionisation of the vapours, e.g. ion-plating
    • C23C14/325—Electric arc evaporation
    • 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
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
    • C23C14/34—Sputtering
    • C23C14/35—Sputtering by application of a magnetic field, e.g. magnetron sputtering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2202/00—Metallic substrate
    • B05D2202/30—Metallic substrate based on refractory metals (Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, W)
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2202/00—Metallic substrate
    • B05D2202/40—Metallic substrate based on other transition elements
    • B05D2202/45—Metallic substrate based on other transition elements based on Cu

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  • Metallurgy (AREA)
  • Life Sciences & Earth Sciences (AREA)
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  • Application Of Or Painting With Fluid Materials (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention relates to the technical field of bathroom decoration, in particular to a method for preparing a metallic luster faucet by coating a brass or zinc alloy substrate, which comprises the following steps: pretreating and preheating the surface of a substrate; spraying organosilicon primer on the surface of the substrate, and curing; placing the substrate treated by the steps in a multi-arc ion plating box, and vacuumizing and plating the substrate in a manner of multi-arc ion plating, biasing and magnetron sputtering; spraying a PP treating agent on the surface of the coated substrate, and curing; and (3) spraying polyacrylate baking varnish on the surface of the base material after the step of curing, and curing to obtain the faucet with metallic luster. According to the invention, the organic silicon primer is sprayed on the surface of the substrate, and the pp treating agent is sprayed on the surface of the substrate after vacuum coating, and then the polyacrylate baking paint is sprayed, so that the binding force between the coatings is greatly enhanced, the metallic luster is enhanced, and the problems of low binding force and non-durable metallic luster existing in the existing coating of the brass or zinc alloy substrate can be solved.

Description

Method for preparing metallic luster faucet by coating brass or zinc alloy base material
Technical Field
The invention relates to the technical field of bathroom decoration, in particular to a method for preparing a metallic luster faucet by coating a brass or zinc alloy substrate.
Background
Along with the development of society, people are higher to the outward appearance technology of bathroom hardware, and current tap all can electroplate one deck decorative layer on its surface at present, and the process of water and electricity plating technology is: electrolytic degreasing, acid activation, alkaline copper plating, cleaning, acid copper (copper sulfate) plating, cleaning, nickel plating (twice), cleaning and chromium plating, because the process of hydroelectric plating usually needs to be carried out for a plurality of degreasing and acid cleaning processes and needs to be continuously replaced by a plurality of different electrolyte solutions, cations to be plated in the plating solution can be effectively deposited on the surface of the base metal through the action of electrolysis, form a coating with stable structure, thus having the problems of serious environmental pollution such as water pollution and huge environmental protection pressure, and the water tap obtained by the traditional water electroplating or baking varnish decoration technology has single decoration color, the range of the color system of the decoration is limited, the design raw materials and the space of the decoration of the faucet are limited, and the decoration process of the faucet is greatly limited. Therefore, some manufacturers begin to adopt the vacuum coating technology to coat bathroom hardware such as a faucet, wherein the vacuum coating technology comprises vacuum evaporation, multi-arc ion coating and magnetron sputtering coating, and the vacuum evaporation has poor coating adhesion and poor coating uniformity of the special-shaped piece, so that the limitation of the vacuum evaporation technology is larger; the multi-arc ion plating and the magnetron sputtering plating are popular due to strong adhesion force of the plating and good surface effect, however, in the current application, when the multi-arc ion plating process is adopted to plate the surface of the faucet made of brass and zinc alloy, the problems of poor adhesion of a surface plating layer and no metal brightness exist, while the prior art is used for carrying out multi-arc ion plating, a layer of priming paint is sprayed on the surface of a base material, but the problems of low adhesion force of the priming paint and the plating layer still exist, the plating layer is easy to fall off, so that the metal brightness is not durable, and in order to increase the performances of wear resistance, antibacterial and the like of the surface of the faucet, a layer of finish paint is sprayed on the surface of the plating layer, the metal brightness of the plating layer is shielded to a certain extent, so that the metal brightness of the surface of the faucet is weak, and the adhesion force of the plating layer and the finish paint layer is also low, so that the adhesion force of the plating layer and the finish paint layer is difficult to reach 0 level, the coatings are easy to fall off, the metal brightness is not durable, and the service life of the faucet made of brass or zinc alloy is affected.
Disclosure of Invention
Aiming at the problems of the background technology, the invention aims to provide a method for preparing a metal luster faucet by coating a brass or zinc alloy substrate, which can solve the problems of low binding force and non-durable metal luster existing in the prior art of coating the brass or zinc alloy substrate by spraying a layer of organosilicon primer on the surface of the substrate, spraying a layer of pp treating agent and then spraying polyacrylate baking paint after vacuum coating.
To achieve the purpose, the invention adopts the following technical scheme:
a method for preparing a metallic luster faucet by coating a brass or zinc alloy substrate comprises the following steps:
(1) Pretreating the surface of a base material, and preheating the pretreated base material, wherein the base material is made of brass or zinc alloy;
(2) Spraying and curing an organosilicon primer on the surface of the substrate, wherein the organosilicon primer is a hydroxyl acrylic organosilicon coating;
(3) Placing the substrate treated in the step (2) in a coating box for vacuum coating, wherein the vacuum coating mode is multi-arc ion coating, bias and magnetron sputtering;
(4) Spraying a PP treating agent on the surface of the coated substrate, and curing;
(5) And (3) spraying polyacrylate baking varnish on the surface of the base material cured in the step (4), and curing to obtain the faucet with metallic luster.
Further, in the step (2), the raw materials of the organosilicon primer comprise, by weight, 33.44-51.37 parts of acrylic resin (hydroxyl), 16.49-27.45 parts of organosilicon oligomer, 15.79-23.75 parts of ethylene glycol diethyl ether acetate, 1.97-2.11 parts of n-butanol and 0.2 part of dispersant BYK333; the method comprises the steps of carrying out a first treatment on the surface of the
The organosilicon oligomer contains 13.8-15.8% of methoxy groups by mass percent.
Further, in the step (3), the specific plating mode of the multi-arc ion plating film with bias and magnetron sputtering plating film is as follows: firstly, performing magnetron sputtering on a base material, setting DC bias parameters to add bias, and performing multi-arc ion coating;
parameters of dc bias: bias voltage 80-90V, duty cycle: 50-65%; the electricity for multi-arc ion plating is 70-80V.
Further, in the step (4), the PP treatment agent is a chlorinated polypropylene polymer or a chlorinated modified acrylic resin, wherein the PP treatment agent includes one or more of PP treatment agents of model FTP-2, PP901 or PPXX.
Further, in the step (2), the specific operation of curing the silicone primer is as follows: after spraying the organosilicon primer on the surface of the base material, self-leveling and drying the organosilicon primer for 25-35 min, heating to 78-82 ℃ and preserving heat for 1.5-2.5h, and then raising the temperature to 145-155 ℃ and preserving heat for 40min.
Further, in the step (4), the specific operation of curing the PP treatment agent is as follows: drying the PP treating agent for 15-25min or drying at 65-75deg.C for 3-7min.
Further, in the step (5), the specific operation of curing the polyacrylate baking varnish is as follows: after the polyacrylate baking varnish is sprayed, the polyacrylate baking varnish is subjected to self-leveling drying for 25-35 min, then is heated to 78-82 ℃ and is kept at the temperature for 1.5-2.5h, and then is heated to 145-155 ℃ and is kept at the temperature for 35-45min.
Further, in the step (2), the thickness of the organosilicon primer is 20-25 μm;
in the step (4), the thickness of the PP treating agent sprayed is less than or equal to 5 mu m.
Further, in the step (5), the thickness of the polyacrylate baking varnish sprayed is 20-25 μm.
Further, in the step (3), one or more of argon, acetylene, nitrogen and oxygen are introduced into the multi-arc ion plating box in the vacuum plating process;
the target material adopted by the vacuum coating comprises one or two of chromium and titanium.
Further, in the step (1), the specific operation of pretreating the surface of the substrate is: after the surface of the base material is dedusted, ultrasonic cleaning and oil removal are carried out, and then drying is carried out;
in the step (1), the temperature for preheating the substrate is 30-60 ℃.
The beneficial effects of this technical scheme are: by spraying an organosilicon primer on the surface of a substrate, spraying a pp treating agent and then spraying polyacrylate baking paint after vacuum coating, the bonding force between the coatings is greatly enhanced and the metallic luster is enhanced, and the problems of low bonding force, low adhesive force, weak metallic luster and non-durable metallic luster existing in the prior art of coating a brass or zinc alloy substrate can be solved.
Detailed Description
The following detailed description further illustrates the technical aspects of the present invention.
A method for preparing a metallic luster faucet by coating a brass or zinc alloy base material, which is characterized by comprising the following steps:
(1) Pretreating the surface of a base material, and preheating the pretreated base material, wherein the base material is made of brass or zinc alloy;
(2) Spraying and curing an organosilicon primer on the surface of the substrate, wherein the organosilicon primer is a hydroxyl acrylic organosilicon coating;
(3) Placing the substrate treated in the step (2) in a coating box for vacuum coating, wherein the vacuum coating mode is multi-arc ion coating, bias and magnetron sputtering;
(4) Spraying a PP treating agent on the surface of the coated substrate, and curing;
(5) And (3) coating polyacrylate baking varnish on the surface of the base material after the curing in the step (4), and curing to obtain the faucet with metallic luster.
It is worth to say that, at present, in the production of water taps, more and more manufacturers begin to adopt a vacuum coating mode to coat a film on the surface of the water tap, but for water taps with brass or zinc alloy as a base material, the vacuum coating is adopted to prepare a product with metallic luster, so that the problems of poor adhesion of the vacuum coating on a primer and weak metallic luster generally exist, and the problem of poor adhesion exists between a finish paint layer and the vacuum coating, so that the adhesion of the prepared water tap is generally 1 level, the adhesion of the prepared water tap is difficult to reach 0 level, each coating is easy to fall off, and the service life of the water tap of brass or zinc alloy is influenced. According to the technical scheme, the hydroxyl acrylic acid organic silicon paint is sprayed on the surface of the base material to obtain the primer layer, then the vacuum coating mode of multi-arc ion coating and bias magnetic control sputtering coating is adopted on the surface of the primer layer to carry out vacuum coating to obtain the vacuum coating layer, then the PP treating agent is sprayed on the surface of the vacuum coating layer, finally the polyacrylate baking paint is sprayed on the surface of the PP treating agent, the adhesion force between all layers of the brass or zinc alloy faucet can be obviously improved, the adhesion force can reach 0 level, and the prepared brass or zinc alloy faucet has high metallic luster, good surface corrosion resistance and durability, and attractive product appearance, and solves the problems of low adhesion force and weak metallic luster caused by coating the brass or zinc alloy faucet by adopting the vacuum coating.
Specifically, the invention adopts the mode of multi-arc ion plating and bias and magnetron sputtering plating to plate the brass or zinc alloy base material, which not only can improve the adhesive force of a vacuum plating layer, but also can prepare the faucet with high metallic luster, the adhesive force of the faucet with the prepared brass or zinc alloy material can reach 0 level, if the multi-arc ion plating is singly used, the glossiness plumpness of the vacuum plating layer is high, but the adhesive force of the vacuum plating layer is poor, if the magnetron sputtering plating is singly used, the adhesive force of the vacuum plating layer reaches the standard, but the metallic luster of the vacuum plating layer is lower, the high metallic luster cannot be presented, and the adhesive force of the spraying water-based finish paint on the vacuum plating layer which is prepared by adopting the mode of multi-arc ion plating or the magnetron sputtering plating is generally not high, generally the I level, and cannot reach 0 level.
It should be noted that if the method of directly applying multi-arc ion plating and biasing and magnetron sputtering plating is directly used for vacuum plating to the base material made of brass and zinc alloy, the problems of poor adhesion and insufficient metallic luster of plating can exist, because plating is carried out on the surfaces of copper and zinc alloy, the ions are difficult to generate alloying reaction, so that the adhesion and the glossiness are poor, the technical scheme is characterized in that the surface of the base material is pretreated before vacuum plating, and after preheating, then the surface of the base material made of brass and zinc alloy is sprayed with hydroxyl acrylic acid organic silicon paint, because the vacuum plating layer cannot be plated and attached on the surfaces of copper and zinc alloy, the bonding force between the vacuum plating layer and the surface of the base material can be increased, the corrosion of the base material can be prevented, the surface of the base material can be provided with high metallic luster after vacuum plating, the hydroxyl acrylic acid organic silicon paint forms a hard and corrosion-resistant protective film on the surface of the base material after curing, the hydroxyl acrylic acid organic silicon paint can be used as a transition film after curing, the surface of the base material can be easily plated with various metallic luster, and the surface of the base material can be provided with high adhesion to the surface of metallic alloy, and the surface of the base material can be plated with metallic luster. The total hydroxyl acrylic acid organic silicon paint has better durability, gloss retention and adhesive force than epoxy organic silicon resin, and the product has good durability and surface effect, and if the hydroxyl acrylic acid organic silicon primer is replaced by oily/water unsaturated polyester resin or epoxy organic silicon resin, the required protective performance and adhesive force can not be achieved.
Further, if the surface of the vacuum coating layer is directly sprayed with a finishing paint, particularly a water-based finishing paint, so that the adhesive force between the finishing paint layer and the vacuum coating layer is generally not high, generally is 1 level, but cannot reach 0 level, which is a technical difficulty to be overcome in the art. The top coat layer adopts polyacrylate baking varnish, can protect the vacuum coating layer from being damaged by oxidization, scratching, and the like, and the manufactured faucet has the appearance of high transparency, high gloss and good three-dimensional effect.
If the PP treating agent is sprayed between the base material and the primer layer, although the adhesive force between the base material and the primer can be effectively improved, the adhesive force between the top coat layer and the vacuum coating layer cannot reach the level 0; if the PP treating agent is sprayed between the primer layer and the vacuum coating layer, the adhesive force of the primer layer and the vacuum coating layer can be effectively improved, but the adhesive force of the finish paint layer and the vacuum coating layer cannot reach the level 0; if the PP treating agent is sprayed on the surface of the finish paint layer, the transparency of the faucet is reduced, no surface protection function exists, and the adhesive force between the finish paint layer and the vacuum coating layer cannot reach the level 0.
Preferably, the PP treating agent is a chlorinated polypropylene polymer or a chlorinated modified acrylic resin, wherein the PP treating agent comprises one or more of PP treating agents of the type FTP-2, PP901 or PPXX. The PP treating agent can effectively wet the surface of the vacuum coating layer, and as the PP treating agent contains chloride ions, an anchoring reaction can be generated, so that the bonding strength of the vacuum coating layer and the finish paint layer is increased.
Preferably, the substrate is a faucet brass or zinc alloy finish cast.
Preferably, the polyacrylate baking varnish is a water-based polyacrylate baking varnish, and the polyacrylate baking varnish in one embodiment of the invention is a dual-purpose water-based primer top paint with model number of WT700/WT600 of Huarun company, and the polyacrylate baking varnish in another embodiment of the invention is a high-brightness acrylic varnish with model number of PG 600.
Further, in the step (3), the specific plating mode of the multi-arc ion plating film with bias and magnetron sputtering is as follows: the magnetron sputtering is performed firstly, then the DC bias parameter is set to add bias voltage, and the multi-arc ion plating is performed, so that the vacuum plating layer has high adhesive force and high metallic luster. The direct current bias voltage has the effect of enabling ions to be accelerated and oriented to deposit on the surface of the base material, so that the adhesive force of the vacuum coating layer on the base material is greatly improved.
Specifically, parameters of the dc bias: bias voltage 80-90V, duty cycle: 50-65%; parameters of multi-arc ion plating: voltage: 70-80V.
The multi-arc ion plating film is a method of directly evaporating metal on a solid cathode target material by adopting an arc discharge method, wherein an evaporant is an ion of a cathode substance emitted from a cathode arc glow spot, so that the film is deposited on the surface of a substrate, and the magnetron sputtering plating film is a method of bombarding the cathode target material at a high speed under the action of an electric field by virtue of positive ions generated by gas discharge, so that atoms or molecules in the target material escape and are deposited on the surface of the plated substrate, so that the required plating film is prepared.
Preferably, in the step (2), the raw materials of the organosilicon primer comprise 33.44-51.37 parts by weight of acrylic resin (hydroxyl type), 16.49-27.45 parts by weight of organosilicon oligomer, 15.79-23.75 parts by weight of ethylene glycol ethyl ether acetate, 1.97-2.11 parts by weight of n-butanol and 0.2 part by weight of dispersant BYK333;
the organosilicon oligomer contains 13.8-15.8% of methoxy groups by mass percent.
Preferably, the raw materials of the organosilicon primer comprise, by weight, 51.37 parts of acrylic resin (hydroxyl), 16.49 parts of organosilicon oligomer (containing 14.8% methoxy), 15.79 parts of ethylene glycol ethyl ether acetate, 1.97 parts of n-butanol and 0.2 part of dispersant BYK333.
In particular, the dispersant BYK333 helps to disperse the paint film into a film.
The organic silicon primer is a stable framework formed by alternately arranging Si atoms and O atoms, a side chain is connected with organic groups (such as methyl, phenyl, vinyl and epoxy groups) through the Si atoms, and the organic silicon primer has high thermal stability due to the fact that the Si-O bond energy is higher than that of C-C organic matters, so that the organic silicon primer has good temperature resistance, and the Si-O bond in the organic silicon primer is of a main chain structure, is free of double bonds, is not easy to be decomposed by ultraviolet light and ozone, and has good weather resistance. Moreover, the polysiloxane compound in the organosilicon primer is one of the most known compounds with no bioactivity, so that the organosilicon primer has physiological inertia, and also has the properties of low surface tension, hydrophobicity and the like.
It can be seen that by using an organosilicon primer, curing can form a hard, corrosion-resistant, temperature-resistant protective film layer, which can replace the hydropower plating layer, and the primer layer as a transition layer, to which the metal ions of the plating film can be attached, it becomes possible to use a substrate that cannot be used as a multi-arc ion plating film.
Further illustratively, in step (2), the silicone primer curing is specifically performed as follows: after spraying the organosilicon primer on the surface of the base material, self-leveling and drying the organosilicon primer for 25-35 min, heating to 78-82 ℃ and preserving heat for 1.5-2.5h, and then raising the temperature to 145-155 ℃ and preserving heat for 40min.
If the organic silicon primer is directly vacuum-coated after being coated, the effect of multi-arc ion coating can be affected, so that the metallic luster of the product is weaker, the organic silicon primer is cured, the better metallic luster of the product can be achieved, and the adhesive force of the coating layer and the organic silicon primer can be improved.
Specifically, in the curing treatment process of the organosilicon primer, if the temperature is only set at 78-82 ℃, the time for the primer to reach the curing state is longer, and the production efficiency is lower; if the temperature is directly raised to 145-155 ℃ and the short-time temperature is too high, the organosilicon primer is cured too quickly, and the surface of the primer is not smooth due to the aggravation of resin crosslinking, so the temperature is firstly heated to 78-82 ℃ and kept for 1.5-2.5h, and then the temperature is raised to 145-155 ℃. Wherein, when the two temperature ranges of 78-82 ℃ and 145-155 ℃ are kept, if the two temperature ranges keep shorter, the curing degree of the primer is lower, which is not beneficial to multi-arc ion coating; if the two temperature ranges are kept for too long, the curing degree of the primer is higher, the adhesive force between the primer and the coating film can be reduced, and the phenomenon of coating film falling off can occur.
Preferably, the silicone primer curing is specifically performed as follows: after the surface of the base material is sprayed with the organosilicon primer, the organosilicon primer is self-leveling dried for 30min, heated to 80 ℃ and kept for 2h, and then the temperature is raised to 150 ℃ and kept for 40min.
Further, in the step (4), the specific operation of curing the PP treatment agent is as follows: drying the PP treating agent for 15-25min or drying at 65-75deg.C for 3-7min.
Preferably, the specific operation of curing the PP treating agent is as follows: drying the PP treating agent for 20min or 5min at 70deg.C.
Specifically, in the step (5), the specific operation of baking varnish curing of polyacrylate is as follows: after the polyacrylate baking varnish is sprayed, the polyacrylate baking varnish is subjected to self-leveling drying for 25-35 min, then is heated to 78-82 ℃ and is kept at the temperature for 1.5-2.5h, and then is heated to 145-155 ℃ and is kept at the temperature for 35-45min.
Preferably, the specific operation of curing the polyacrylate baking varnish is as follows: after the polyacrylate baking varnish is sprayed, the polyacrylate baking varnish is subjected to self-leveling drying for 30min, heated to 80 ℃ and kept for 2h, and then the temperature is raised to 150 ℃ and kept for 40min.
Further illustratively, in step (2), the thickness of the silicone primer coating is from 20 to 25 μm;
in the step (4), the thickness of the PP treating agent sprayed is less than or equal to 5 mu m.
Preferably, in the step (5), the thickness of the polyacrylate baking varnish sprayed is 20-25 μm.
It is worth to say that the organosilicon primer plays a role in improving the adhesion between the substrate and the vacuum coating layer and protecting the substrate from corrosion, if the thickness of the organosilicon primer is too thick, the adhesion will be reduced, and if the thickness of the organosilicon primer is too thin, the protection effect on the metal substrate and the durability such as corrosion resistance will not be reduced. The PP treating agent can improve the binding force between the finish paint layer and the vacuum coating layer and the adhesive force of the vacuum coating layer, if the thickness of the PP treating agent sprayed is too thick, macroscopic residues can be generated, the gloss and the transparency of the primer layer are affected, and the appearance is poor; the PP treating agent is sprayed in too thin a thickness, and can not play a role in improving adhesion. If the thickness of the polyacrylate baking varnish is too thick, the fullness and the third dimension of the finished product can be enhanced, but the adhesive force of the polyacrylate baking varnish can be reduced; if the thickness of the polyacrylate baking varnish is too thin, the vacuum coating is difficult to protect, and the appearance plumpness is insufficient.
Further describing, in the step (3), one or more of argon, acetylene, nitrogen and oxygen are introduced into the multi-arc ion plating box in the vacuum plating process;
the target material used for vacuum coating comprises one or two of chromium and titanium.
Different gas and target combinations can be used to obtain plating films with different colors, so that products with various metal colors, such as silver, black, gold, color, rose gold, gun black and the like, are prepared, and the partial combinations of the gas and the target are shown in Table 1:
Figure 605190DEST_PATH_IMAGE002
further, in the step (1), the specific operation of pretreatment of the substrate surface is as follows: and (3) after the surface of the base material is dedusted, ultrasonic cleaning and oil removal are carried out, and then drying is carried out.
The surface of the base material is pretreated, and the adhesion between the organosilicon primer and the base material can be achieved by sequentially carrying out dust removal and ultrasonic cleaning oil removal treatment.
Preferably, in step (1), the substrate is preheated to a temperature of 30-60 ℃.
After the base material is preheated at 30-60 ℃, the adhesion force between the organosilicon primer and the base material and between the polyacrylate baking varnish and the coating film is better.
The technical scheme of the invention is further described below by combining specific examples and comparative examples.
Example 1
A method for plating silver film on the surface of a brass faucet by multi-arc ions comprises the following steps:
(1) Pre-treating the surface of the brass faucet after finish polishing, and pre-heating the brass faucet after pre-treatment at the temperature of 45 ℃;
(2) Spraying an organosilicon primer on the surface of a brass faucet, enabling the organosilicon primer to be self-leveling and drying for 25min, heating to 80 ℃ and preserving heat for 2h, and then raising the temperature to 145 ℃ and preserving heat for 40min, wherein the organosilicon primer is a hydroxyl acrylic organosilicon paint, and the spraying thickness of the organosilicon primer is 20 mu m;
(3) Placing the brass faucet treated in the step (2) in a coating box, placing a chromium target in the coating box, vacuumizing and coating, and then coating the brass faucet in the coating box in a mode of multi-arc ion coating with bias and magnetron sputtering, wherein argon is introduced into the coating box in the coating process;
(4) Spraying a PP treating agent on the surface of the brass faucet after the coating, wherein the thickness of the PP treating agent sprayed is 5 mu m, and then drying the PP treating agent for 25min;
(5) And (3) spraying polyacrylate baking paint (a dual-purpose water-based primer top paint with the model of WT600 of Huarun company) on the surface of the PP treating agent, wherein the spraying thickness of the polyacrylate baking paint is 25 mu m, then, after the polyacrylate baking paint is subjected to self-leveling drying for 25min, heating to 78 ℃ and preserving heat for 2.5h, and then, heating to 145 ℃ and preserving heat for 45min to obtain the brass faucet with silvery luster.
Example 2
A method for multi-arc ion plating of a color film on the surface of a brass faucet, comprising the steps of:
(1) Sequentially carrying out pretreatment of dust removal, ultrasonic cleaning and oil removal and drying on the surface of the brass faucet after finish polishing, and then preheating the dried brass faucet at the preheating temperature of 60 ℃;
(2) Spraying an organosilicon primer on the surface of a brass faucet, enabling the organosilicon primer to be self-leveling and drying for 30min, heating to 82 ℃ and preserving heat for 1.5h, and then raising the temperature to 150 ℃ and preserving heat for 40min, wherein the organosilicon primer is a hydroxyl acrylic organosilicon paint, and the thickness of the organosilicon primer sprayed is 15 mu m;
(3) Placing the brass faucet treated in the step (2) in a coating box, placing a titanium target in the coating box, vacuumizing and coating, and then coating the brass faucet in the coating box in a mode of multi-arc ion coating with bias and magnetron sputtering, wherein oxygen is introduced into the coating box in the coating process;
(4) Spraying a PP treating agent on the surface of the brass faucet after coating, wherein the thickness of the PP treating agent sprayed is 4 mu m, and then drying the PP treating agent at 70 ℃ for 5min;
(5) And (3) spraying polyacrylate baking paint (a dual-purpose water-based primer top paint with the model of WT700 of Huarun company) on the surface of the PP treating agent, wherein the spraying thickness of the polyacrylate baking paint is 20 mu m, then, after the polyacrylate baking paint is subjected to self-leveling drying for 30min, heating to 80 ℃ and preserving heat for 2h, and then, heating to 150 ℃ and preserving heat for 40min to obtain the brass faucet with colored luster.
Example 3
A method for plating gold films on the surfaces of zinc alloy handles and brass water taps by multiple arc ions comprises the following steps:
(1) Pre-treating the surfaces of the zinc alloy handle and the brass main body after finish polishing, and pre-heating the pre-treated blank at the pre-heating temperature of 30 ℃;
(2) Spraying an organosilicon primer on the surface of a blank, enabling the organosilicon primer to be self-leveling and drying for 35min, heating to 78 ℃ and preserving heat for 2.5h, and then raising the temperature to 155 ℃ and preserving heat for 40min, wherein the organosilicon primer is a hydroxyl acrylic organosilicon paint, and the thickness of the organosilicon primer sprayed is 25 mu m;
(3) Placing the blank processed in the step (2) in a coating box, placing a titanium target in the coating box, vacuumizing and coating, then carrying out multi-arc ion coating and bias and magnetron sputtering coating on the blank in the coating box, and introducing nitrogen into the coating box in the coating process;
(4) Spraying a PP treating agent on the surface of the coated blank, wherein the thickness of the PP treating agent sprayed is 5 mu m, and then drying the PP treating agent at 68 ℃ for 7min;
(5) And (3) spraying polyacrylate baking varnish (selected from high-brightness acrylic varnish with the model PG600 of Huarun company) on the surface of the PP treating agent, wherein the spraying thickness of the polyacrylate baking varnish is 22 mu m, then, after the polyacrylate baking varnish is subjected to self-leveling drying for 35min, heating to 82 ℃ and preserving heat for 1.5h, and then, heating to 155 ℃ and preserving heat for 40min to obtain the faucet with golden luster.
Wherein, in examples 1-3, the raw material formulation ratio of the silicone primer is shown in the following table 2:
Figure 991172DEST_PATH_IMAGE003
specifically, the faucets having metallic luster obtained in examples 1 to 3 were subjected to performance tests according to the test criteria and methods of the following table 3, respectively, and the test searches are shown in the following table 4.
Figure DEST_PATH_IMAGE004
Figure 708593DEST_PATH_IMAGE005
As can be seen from the detection results of the table 4, the adhesion of the tap with metallic luster, which is prepared by the technical scheme, can reach 0 level, and the metallic luster of the surface of the tap is strong, and the tap has better salt spray resistance, acid resistance and alkali resistance.
Comparative example 1
The comparative example is a method for plating silver film on the surface of a brass faucet by multi-arc ion, the preparation method of the comparative example 1 is basically the same as that of the example 1, except that the surface of the brass faucet is not sprayed with organosilicon primer, and the multi-arc ion plating is directly carried out, so that the brass faucet with silver color is prepared by adopting the method.
Comparative example 2
The preparation method of the comparative example was substantially the same as that of example 1 except that the polyacrylate type baking varnish was directly sprayed after vacuum coating instead of the PP treatment agent in the comparative example, and a brass faucet having a silver color was prepared by the above method.
Comparative example 3
The preparation method of the comparative example is basically the same as that of example 1, except that after the spraying of the organosilicon primer, a layer of PP treating agent is sprayed, then vacuum coating and polyacrylate baking varnish are performed, and the brass faucet with silver luster is prepared by adopting the method.
Comparative example 4
The preparation method of the comparative example was substantially the same as example 1 except that the formulation of the primer was different, and according to parts by weight, 67.13 parts of 50% acrylic resin (hydroxyl group) as a raw material of the primer in the comparative example, 6.38 parts of silicone oligomer (containing 14.8% methoxy group), 10.57 parts of ethylene glycol ethyl ether acetate, 1.93 parts of n-butanol, and 0.2 part of dispersant BYK333 were used to prepare a brass faucet having silver luster by using the above primer and the preparation method of example 1.
Specifically, brass faucets having silver luster obtained in comparative examples 1 to 4 were subjected to performance tests according to the test standards and methods of Table 3 described above, respectively, and the test searches are shown in Table 5 below.
Figure DEST_PATH_IMAGE006
The technical principle of the present invention is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the invention and should not be taken in any way as limiting the scope of the invention. Other embodiments of the invention will be apparent to those skilled in the art from consideration of this specification without undue burden.

Claims (6)

1. A method for preparing a metallic luster faucet by coating a brass or zinc alloy base material, which is characterized by comprising the following steps:
(1) Pretreating the surface of a base material, and preheating the pretreated base material, wherein the base material is made of brass or zinc alloy;
(2) Spraying and curing an organosilicon primer on the surface of the substrate, wherein the organosilicon primer is a hydroxyl acrylic organosilicon coating; the raw materials of the organosilicon primer comprise, by weight, 33.44-51.37 parts of hydroxyl acrylic resin, 16.49-27.45 parts of organosilicon oligomer, 15.79-23.75 parts of ethylene glycol monoethyl ether acetate, 1.97-2.11 parts of n-butanol and 0.2 part of dispersant BYK333; the organic silicon oligomer contains 13.8-15.8% of methoxy groups by mass percent; the specific operation of the curing of the organosilicon primer is as follows: after spraying the organosilicon primer on the surface of the base material, self-leveling and drying the organosilicon primer for 25-35 min, heating to 78-82 ℃ and preserving heat for 1.5-2.5h, and then raising the temperature to 145-155 ℃ and preserving heat for 40min;
(3) Placing the substrate treated in the step (2) in a coating box for vacuum coating, wherein the vacuum coating mode is multi-arc ion coating, bias and magnetron sputtering coating; the specific coating mode of the multi-arc ion coating and bias and magnetron sputtering coating is as follows: firstly, performing magnetron sputtering on a base material, setting DC bias parameters to add bias, and performing multi-arc ion coating; parameters of dc bias: bias voltage 80-90V, duty cycle: 50-65%; the voltage for multi-arc ion plating is 70-80V; in the step (3), one or more of argon, acetylene, nitrogen and oxygen are introduced into the multi-arc ion plating box in the vacuum plating process; the target material adopted by the vacuum coating comprises one or two of chromium and titanium;
(4) Spraying a PP treating agent on the surface of the coated substrate, and curing; the PP treating agent is chlorinated polypropylene polymer or chlorinated modified acrylic resin;
(5) And (3) spraying polyacrylate baking varnish on the surface of the base material cured in the step (4), and curing to obtain the faucet with metallic luster.
2. The method for manufacturing a metallic lustre faucet coated with a brass or zinc alloy base material according to claim 1, wherein in said step (4), the PP treating agent includes one or more of PP treating agents of the type FTP-2, PP901 or PPXX.
3. The method for preparing a metallic luster faucet by coating a brass or zinc alloy base material according to claim 1, wherein in the step (4), the specific operation of curing the PP treating agent is as follows: drying the PP treating agent for 15-25min or drying at 65-75deg.C for 3-7min.
4. The method for preparing a metallic luster faucet by coating a brass or zinc alloy base material according to claim 1, wherein in the step (5), the specific operation of curing the polyacrylate baking varnish is as follows: after the polyacrylate baking varnish is sprayed, the polyacrylate baking varnish is subjected to self-leveling drying for 25-35 min, then is heated to 78-82 ℃ and is kept at the temperature for 1.5-2.5h, and then is heated to 145-155 ℃ and is kept at the temperature for 35-45min.
5. The method for preparing a metallic luster faucet by coating a brass or zinc alloy base material according to claim 1, wherein in the step (2), the thickness of the silicone primer is 20-25 μm;
in the step (4), the thickness of the PP treatment agent sprayed is less than or equal to 5 mu m;
in the step (5), the thickness of the polyacrylate baking varnish sprayed is 20-25 mu m.
6. The method for preparing a metallic lustrous faucet coated with a brass or zinc alloy substrate according to claim 1, wherein in the step (1), the specific operation of pre-treating the surface of the substrate is: after the surface of the base material is dedusted, ultrasonic cleaning and oil removal are carried out, and then drying is carried out;
in the step (1), the temperature for preheating the substrate is 30-60 ℃.
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