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Method for compounding double-layer plating films on plastic surface by fully dry method

A double-layer composite and all-dry technology, which is applied in chemical instruments and methods, metal material coating technology, coatings, etc., can solve the problems of lack of metal texture, large amount of metal consumption, high water and energy consumption, etc. Achieve the effect of hard and smooth surface, less metal consumption, and improved gloss

Active Publication Date: 2012-01-25
XIAMEN RUNNER IND CORP
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the water electroplating process has the following disadvantages: (1) It consumes a lot of water and energy, and produces a large amount of waste water
(3) Emission of toxic waste gas
(4) Large amount of metal consumption
[0003] Chinese patent CN1468976 discloses a surface treatment method suitable for metals and non-metals. It is mainly because the existing surface treatment methods have serious environmental pollution, and the anti-corrosion effect and surface gloss are poor after treatment. It is a fixed frame that can be used for positioning items. The items are positioned on the fixed bracket. First, a base film is placed on the surface of the item, and then a metal plating layer is formed by vacuum electroplating. After that, the fixing frame and the item are directly electrocoated to make the electroplating The surface of the layer forms an acrylic layer with high corrosion resistance, wear resistance and gloss, which can effectively improve the problems existing in common surface treatment methods
[0005] 2) The surface organic coating is directly exposed to the outside, and the weather resistance and water resistance are relatively poor
[0006] 3) The outermost layer is organic matter, not a metal film, so the hardness is poor and lacks metal texture
[0007] 4) Primer and topcoat need to be sprayed, the yield rate is not high, and the VOC emission is high, which is not environmentally friendly
[0008] The applicant provides a sandwich composite coating technology in Chinese patent 201010585736.1, but this kind of dry coating still needs three coatings, and the cost and energy consumption are still high

Method used

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  • Method for compounding double-layer plating films on plastic surface by fully dry method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1 A kind of ABS material hexavalent chrome light chrome faucet

[0028] 1) The ABS masterbatch with silvery white treatment is injected into the blank, wiped with a dry cloth, then flame cleaned and activated, and then electrostatically dedusted. The flame treatment time is 4s.

[0029] 2) Spray a layer of 20 μm thick UV-curable coating on the workpiece after cleaning. Heating and leveling with infrared light (60℃×8min), and then cured by ultraviolet light (1000J / m 2 ×40s).

[0030] 3) Transfer the blanks sprayed with UV-curable coatings into a PVD (Physical Vapor Deposition) furnace for plasma gas activation (conditions: ion source current 0.3A, bias voltage 100V, furnace vacuum pressure 0.2Pa, working air flow of Ar 2 and O 2 Mixed air flow, mixing ratio 50SCCM: 50SCCM, activation time 5min); then a layer of metal film Cr with a thickness of 0.1 μm is deposited on the paint surface (arc coating conditions: chromium target current 80A, bias voltage 70V, 3...

Embodiment 2

[0040] Embodiment 2 A kind of nylon material plated imitation gold handle

[0041] 1) The PA masterbatch with golden treatment is injected into the blank, wiped with a dry cloth, then flame cleaned and activated, and then electrostatically removed. The flame treatment time is 12s.

[0042]2) Spray a layer of 30μm thick thermosetting coating, use leveling temperature (60℃×15min), and then cure (80℃×25min).

[0043] 3) Transfer the coated blank into a PVD (Physical Vapor Deposition) furnace for plasma gas activation (conditions: ion source current 0.3A, bias voltage 100V, furnace vacuum pressure 0.2Pa, working gas flow of Ar 2 and O 2 Mixed air flow, mixing ratio 70SCCM: 30SCCM, activation time 5min); then a layer of metal film Zr with a thickness of 0.1 μm is coated on the paint surface (arc coating conditions: zirconium target current 120A, bias voltage 70V, 50SCCM Ar 2 , vacuum pressure 0.2Pa, coating time 2min), and then a layer of 0.3um zirconium nitride film (arc coating...

Embodiment 3

[0052] Embodiment 3 A kind of BMC material stainless steel color refrigerator handle

[0053] 1) Injection-molded BMC pellets with stainless steel color treatment, wiped with a dry cloth, then flame cleaned and activated, and then electrostatically dedusted. The flame treatment time was 15s.

[0054] 2) The workpiece is preheated to 120 degrees, spray a layer of 50μm thick heat-cured coating, the heat-cured coating is preheated at a temperature of (130°C×5min), then leveled (150°C×5min), and then cured (170°C×20min) ).

[0055] 3) Transfer the coated blank into a PVD (Physical Vapor Deposition) furnace for plasma gas activation (conditions: ion source current 0.3A, bias voltage 120V, furnace vacuum pressure 0.2Pa, working gas flow of Ar 2 and O 2 Mixed air flow, mixing ratio 50SCCM: 100SCCM, activation time 5min); then coat a layer of metal film Zr with a thickness of 0.1μm on the paint surface (arc coating conditions: zirconium target current 120A, bias voltage 70V, 50SCCM ...

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Abstract

The invention provides a method for compounding double-layer plating films on the plastic surface by a fully dry method, which relates to a method for obtaining a metal compound layer on the plastic surface. Pigment is added into plastic cement master batch for carrying out dyeing treatment, then, the materials are formed into plastic cement blanks through injection molding, the plastic cement blanks are cleaned and activated by a dry method, the activated plastic cement blanks are sprayed and coated with organic coating layers, the plastic blanks are placed into a physical gas-phase furnace to plate metal ceramic composite films, and final products are obtained. Through tests, the metallized plastic products prepared by the method have the advantages of anti-corrosion, wear resistance, weather resistance, temperature resistance, colorful performance and the like, in addition, the surface is hard and smooth, the quality of the prepared metallized plastic products is comparable to the quality of traditional water electroplating metal products, the coarsening and activating and water washing processes in the traditional water electroplating process are omitted, no harmful electroplating liquid medicine is adopted, and the toxic hexavalent chromium is not adopted. In the process, the metal consumption is low, the waste gas is little, and the complete waste-water-free discharge is also realized. The function and the quality of the plastic surface treatment product can be improved, the production cost can be reduced, the efficiency can be improved, the water is saved, and the environment is protected.

Description

technical field [0001] The invention relates to a method for obtaining a metal composite layer on the plastic surface, in particular to a method for applying a double-layer composite coating on the plastic surface by an all-dry method. Background technique [0002] Traditional water (wet) electroplating on the plastic surface can obtain products with high anti-corrosion, high wear resistance, specular high gloss and strong decoration. This kind of plastic metallization (plating Cu / Ni / Cr metal film) is widely used and has become popular. Long. However, the water electroplating process has the following disadvantages: (1) It consumes a lot of water and energy, and produces a large amount of waste water. (2) Use harmful chemical plating solutions and additives. (3) Emission of toxic waste gas. (4) A large amount of metal is consumed. (5) Use hexavalent chromium which is harmful to human body. Obviously, this traditional craft is quite harmful to the environment and needs t...

Claims

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Application Information

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IPC IPC(8): B32B15/08B32B17/00C23C14/20
Inventor 吴子豹李明仁
Owner XIAMEN RUNNER IND CORP
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