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Method for obtaining vacuum chromium-coated layer on high-temperature-resisting plastic workpiece

A technology for plastic parts and chrome plating, applied in vacuum evaporation plating, superimposed layer plating, metal material coating technology, etc., can solve the problems of no high-temperature baking varnish patents and reports, etc., and achieve easy widespread use, The effect of reducing production cost and improving production efficiency

Inactive Publication Date: 2007-09-05
张金勇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high curing temperature far exceeding the heat deflection temperature of the above-mentioned plastic parts with a lower heat deflection temperature, no patents and reports have been found on high-temperature baking varnishes as primers and topcoats for vacuum coating of plastic parts.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0015] Example: Automotive chrome-plated radiator grille

[0016] On the blank of automobile radiator grille injection-molded with PBT modified plastic, first spray a layer of baking varnish with a curing temperature above 100°C as a primer, after drying, put it into a multi-arc vacuum ion coating equipment, and vacuum coat it One layer of chrome layer with good adhesion, after taking it out, spray a layer of baking paint with a curing temperature above 100°C on the chrome layer, and use it as a top coat after drying. The finished product has the same effect as electrochrome plating, mirror gloss, excellent anti-corrosion performance, surface hardness above 4H, good wear resistance and scratch resistance.

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PUM

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Abstract

A method for producing vacuum chromium-cladding layer on high-temperature-resisting plastic piece has chromium-plating and decorative functions. The process is carried out by selecting plastic piece with thermal-deformation temperature above 100degree, spraying baking paint onto plastic piece surface with curing temperature below 100degree as primer paint, obtaining vacuum chromium-cladding layer on primer surface of multi-arc vacuum ion coating apparatus, and re-spraying baking paint with curing temperature below 100degree onto chromium-cladding layer surface as finish. It has excellent abrasive and anti-corrosion performances.

Description

technical field [0001] The invention relates to a method for obtaining a vacuum chrome plating layer on heat-resistant plastics, more specifically, a method of obtaining a layer of vacuum chrome plating layer with strong bonding force on the surface of heat-resistant plastics and their plastic alloys with a heat distortion temperature higher than 100°C A method, especially a method for obtaining a vacuum chrome plating layer with good bonding force on the plastic decorative parts of automobiles, so as to obtain a decorative effect that can meet the requirements of the automobile industry. technical background [0002] In the prior art, there are two methods for obtaining a metal chromium layer on plastic parts: one is a traditional electroplating process, and the other is a vacuum chrome plating process. Due to the pollution of heavy metal ions and other reasons, the use of traditional electroplating process is being restricted more and more strictly....

Claims

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Application Information

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IPC IPC(8): C23C28/00B05D7/24C23C14/20
Inventor 张金勇
Owner 张金勇
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