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Surface coating structure of engineering plastic and preparation method thereof

A technology for engineering plastics and coatings, applied in chemical instruments and methods, coatings, layered products, etc., can solve problems such as electroplating wastewater discharge, and achieve the effect of reducing discharge and avoiding harm

Active Publication Date: 2014-05-28
XIAMEN RUNNER IND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the above-mentioned problems existing in the surface metallization of existing engineering plastics, provide a solution that can completely eliminate the harm of electroplating chromium to the environment, and solve the problem of electroplating wastewater discharge, which can reduce electroplating wastewater by 70% to 80%, and has no Existence of hexavalent chromium wastewater, a kind of engineering plastic surface coating structure and preparation method thereof which is easier for wastewater treatment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A coating structure on the surface of ABS engineering plastics. The structure starts from the ABS engineering plastics layer and consists of a vacuum coating (PVD) conductive metal layer with a thickness of 0.5 μm, an electroplated nickel layer with a thickness of 15 μm, and a PVD corrosion-resistant alloy layer with a thickness of 0.5 μm. , the corrosion-resistant alloy can be zirconium-silicon alloy (zirconium-silicon atomic composition is zirconium 98 silicon 2), PVD color layer with a thickness of 0.3 μm, and the color layer is zirconium nitride.

[0026] A preparation method of ABS engineering plastics surface coating structure is as follows:

[0027] The first step is ABS engineering plastic vacuum coating PVD pre-metallization: carry out hydrocarbon vacuum degreasing and drying of ABS engineering plastic → PVD plating conductive metal layer; hydrocarbon vacuum degreasing and drying treatment, degreasing time is 8min, vacuum The drying time is 15 minutes, and the ...

Embodiment 2

[0036] An ABS / PC engineering plastic surface coating structure, the structure of which starts from the engineering plastic layer is a vacuum coating (PVD) conductive metal layer with a thickness of 2 μm, an electroplated nickel layer with a thickness of 7 μm, and a PVD corrosion-resistant alloy layer with a thickness of 2 μm. The corrosion-resistant alloy can be chromium-silicon alloy (the atomic composition of chromium and silicon is chromium 98 silicon 2), the PVD color layer is 0.1 μm thick, and the color layer is zirconium carbide nitride.

[0037] The implementation steps of a method for preparing an ABS / PC engineering plastics surface coating structure are as follows:

[0038] The first step is ABS / PC engineering plastics vacuum coating PVD pre-metallization: carry out hydrocarbon vacuum degreasing and drying of ABS / PC engineering plastics → PVD plating conductive metal layer; hydrocarbon vacuum degreasing and drying treatment, degreasing time The drying time is 3 minute...

Embodiment 3

[0048] A glass fiber-reinforced PA6 engineering plastic surface coating structure, the structure of which starts from the engineering plastic layer is a vacuum coating (PVD) conductive metal layer with a thickness of 1.5 μm, an electroplated nickel layer with a thickness of 10 μm, and a PVD corrosion-resistant alloy layer with a thickness of The corrosion-resistant alloy can be chromium-silicon alloy (the atomic composition of chromium and silicon is chromium 50 silicon 50), PVD color layer with a thickness of 0.2 μm, and the color layer is zirconia.

[0049] A kind of implementation steps of the PA6 engineering plastics surface coating structure preparation method reinforced by glass fiber are as follows:

[0050] The first step is glass fiber reinforced PA6 engineering plastic vacuum coating PVD pre-metallization: the glass fiber reinforced PA6 engineering plastic is subjected to hydrocarbon vacuum degreasing and drying → PVD plating conductive metal layer; hydrocarbon vacuum...

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Abstract

The invention relates to engineering plastic surface treatment, and particularly relates to a surface coating structure of engineering plastic and a preparation method thereof. The surface coating structure of the engineering plastic comprises, in sequence, a vacuum coating conductive metal layer, a nickel electroplated coating, a PVD corrosion-resistant alloy layer and a PVD color layer. The method includes a step of subjecting the engineering plastic to hydrocarbon vacuum oil removal and drying, transferring and hanging the engineering plastic into a PVD furnace, and subjecting the conductive metal layer to vacuum plating; a step of transferring and hanging the processed engineering plastic product to an electroplating hanger to perform nickel electroplating, performing Watt's nickel electroplating, then performing semi-bright nickel electroplating, subjecting the engineering plastic product to wiredrawing processing, and subjecting the engineering plastic product after the wiredrawing processing to hydrocarbon vacuum oil removal and drying; or a step of transferring and hanging the processed engineering plastic product to an electroplating hanger to perform nickel electroplating, performing Watt's nickel electroplating first, then performing semi-bright nickel electroplating, then performing bright nickel electroplating, and finally performing microporous nickel electroplating; and a step of plating the processed engineering plastic product with the PVD corrosion-resistant alloy layer and the PVD color layer.

Description

technical field [0001] The invention relates to engineering plastic surface treatment, in particular to an engineering plastic surface coating structure and a preparation method thereof. Background technique [0002] At present, the plastics used in sanitary ware, household appliances and other industries are mainly ABS plastics, or ABS+30% PC plastics. The current surface metallization is carried out by electroplating treatment. The main process is: chemical wax removal and oil removal → hexavalent chromium Coarsening→palladium salt adsorption→reduction→deposition of chemical nickel→electroplating copper→semi-bright nickel→bright nickel→microporous nickel→bright chromium, or finally PVD vacuum coating. This production process will produce a large amount of waste water and heavy metal ions, such as hexavalent chromium ions, which will cause harm to the environment and humans. [0003] Hazards of chrome plating: damage to human skin Hexavalent chromium compounds are irritati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B9/04B32B15/04C23C28/00C23C28/02
Inventor 余水张先超黄贤明李明仁
Owner XIAMEN RUNNER IND CORP
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