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Plastic surface coating structure and preparation method thereof

A surface layer and plastic technology, applied in the field of plastic surface coating structure and its preparation, can solve the problems of poor adhesion between plastic and metal, low plastic absorption and plating ability, inconsistent hydrophilicity, etc., so as to improve the adhesion, The effect of enhanced suction power, reduced corrosion and wear conditions

Pending Publication Date: 2021-11-30
深圳市金源康实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] During the electroplating process, the plastic needs to be treated with a roughening solution, so that the plastic changes from hydrophobicity to hydrophilicity, thereby improving the bonding force of the plastic surface. After the plastic is treated with the traditional roughening solution, the surface has inconsistent hydrophilicity. As a result, in the later stage of electroplating, the bonding force between plastic and metal is not good, and the suction and plating ability of plastic is not high.

Method used

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  • Plastic surface coating structure and preparation method thereof
  • Plastic surface coating structure and preparation method thereof

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preparation example Construction

[0036] The preparation method of the plastic surface coating structure of the present application comprises the following steps:

[0037](1) Pretreatment of plastic products: Carry out hydrocarbon vacuum degreasing and drying treatment on plastic products, and then put the dried plastic products into conventional chromium-sulfur mixed acid washing solution for roughening at 70°C for 12 minutes, and then pass through clean water Continue to dry after rinsing, treat with a surface treatment agent, and dry to obtain a plastic product;

[0038] (2) Pre-metallization of plastic products: the plastic product 1 obtained in step (1) is plated with a conductive metal layer to obtain plastic product 2;

[0039] (3) Electroplating nickel on plastic products: electroplating the plastic product 2 obtained in step (2) with nickel to obtain plastic product 3;

[0040] (4) Electroplating functional layer of plastic product: the plastic product 3 obtained in step (3) is plated with a PVD colo...

Embodiment 1

[0070] The plastic surface coating structure of this embodiment, from the plastic surface layer, is successively a conductive metal layer, an electroplated nickel layer, a PVD color layer, and a transparent silicon dioxide film layer, and the plastic product is processed through a surface treatment agent. Composition of raw materials: plasticizer 5kg, sodium lauryl sulfate 5kg, coupling agent 10kg, water 50kg, the plasticizer is composed of acetyl tributyl citrate, cyclohexane-1,2-dicarboxylic acid diisooctyl The ester is composed of a mass ratio of 2:3, and the coupling agent is composed of 3-(2,3-epoxypropoxy)propyltrimethoxysilane and isopropyltris(dioctylpyrophosphate acyloxy)titanate according to The mass ratio is 4:2, the thickness of the conductive metal layer is 3 μm, the thickness of the transparent silicon dioxide film layer is 500 μm, the thickness of the nickel layer is 5 μm, and the thickness of the PVD color layer is 0.5 μm.

[0071] The preparation method of the...

Embodiment 2

[0079] The plastic surface coating structure of this embodiment, from the plastic surface layer, is successively a conductive metal layer, an electroplated nickel layer, a PVD color layer, and a transparent silicon dioxide film layer, and the plastic product is processed through a surface treatment agent. Composition of raw materials: 10kg of plasticizer, 10kg of sodium lauryl sulfate, 15kg of coupling agent, 60kg of water, among which the plasticizer consists of acetyl tributyl citrate, cyclohexane-1,2-dicarboxylic acid diisooctyl The ester is composed of a mass ratio of 2:3, and the coupling agent is composed of 3-(2,3-epoxypropoxy)propyltrimethoxysilane and isopropyltris(dioctylpyrophosphate acyloxy)titanate according to The mass ratio is 4:2, the thickness of the conductive metal layer is 5 μm, the thickness of the transparent silicon dioxide film layer is 1200 μm, the thickness of the nickel layer is 8 μm, and the thickness of the PVD color layer is 1 μm.

[0080] The pre...

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Abstract

The invention relates to the technical field of plastic product surface electroplating, and particularly discloses a plastic surface coating structure and a preparation method thereof. The plastic surface coating structure sequentially comprises a conductive metal layer, an electroplated nickel layer, a PVD color layer and a transparent silicon dioxide thin film layer from a plastic surface layer, wherein plastic is treated by a surface treating agent, and the surface treating agent is mainly prepared from the following raw materials: a plasticizer, lauryl sodium sulfate, a coupling agent and water. The preparation method of the plastic surface coating structure comprises the following steps: (1) pretreating a plastic product, specifically, treating the plastic product by the surface treating agent to obtain a plastic product I; (2) pre-metallizing the plastic product, specifically, plating the conductive metal layer on the plastic product I obtained in the step (1); (3) electroplating nickel on the plastic product; and (4) electroplating a functional layer on the plastic product. The plastic surface coating structure is relatively high in plating absorption capacity.

Description

technical field [0001] The present application relates to the technical field of surface electroplating of plastic products, more specifically, it relates to a plastic surface coating structure and a preparation method thereof. Background technique [0002] Plastic products are made of plastic, polymer compounds formed by addition polymerization or polycondensation reaction, which can freely change the composition and shape. It is composed of synthetic resin and filler, plasticizer, stabilizer, lubricant, colorant, etc additive composition. Plastic electroplating has been widely used in industries such as automobiles, home appliances, and sanitary ware. Its technology mainly consists of chemical metallization and electroplating processes on plastic surfaces. [0003] With the rapid development of industry, the application of plastic electroplating is becoming more and more extensive, and it has become one of the important means of surface decoration in plastic products. Com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C28/00C23C14/02C23C14/10C23C14/20C23C14/34C25D3/12C25D5/56
CPCC23C28/32C23C28/345C23C14/02C23C14/205C23C14/10C23C14/34C25D3/12C25D5/56
Inventor 胡栋明邓迎春贾夕满
Owner 深圳市金源康实业有限公司
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