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Deplating method for metal plating layer on surface of waste ABS electroplated part

A technology for surface metal and electroplating parts, which is applied in the field of resource recycling of waste ABS electroplating parts, to achieve the effect of improving grades, reducing damage, and simple components

Active Publication Date: 2019-12-31
南通睿科环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For above-mentioned problems in the prior art, the object of the present invention is to provide a kind of stripping method of the metal coating on the surface of waste ABS electroplating part; The process is clean and efficient, no waste gas is generated, green and environmentally friendly, and has no damage to the ABS plastic substrate, effectively improving the resource utilization value of recycled plastics, while improving production efficiency and economic benefits, and avoiding environmental pollution caused by the treatment process

Method used

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  • Deplating method for metal plating layer on surface of waste ABS electroplated part

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Wash the waste ABS electroplating parts with water, ethanol and acetone in sequence to obtain the cleaned ABS electroplating parts; place 4g of the cleaned ABS electroplating parts in the compound chloride salt solution system according to the liquid-solid volume mass ratio of 7ml / g, and put 1 A stirring bar with a diameter of 7 mm was used, and then reacted at 40 °C and 500 rpm for 30 min; where FeCl 3 The mass concentration of the solution is 7%, CuCl 2 The mass concentration of the solution is 10%, AlCl 3 The mass concentration of the solution is 8%, NH 4 The molar concentration of the Cl solution was 0.5 mol / L; after the reaction, the samples were washed, dried, and weighed. Then it is completely stripped, and after the reaction is finished, the stripped sample is taken out from the stripping solution, cleaned, dried, weighed, and then the stripping rate is calculated according to the two stripping results.

[0027] For the deplating solution containing copper-ni...

Embodiment 2

[0030] Wash the waste ABS electroplated parts in sequence with water, ethanol and acetone to obtain the cleaned ABS electroplated parts; put 4g of the cleaned ABS electroplated parts in the compound chloride salt solution system according to the liquid-solid volume mass ratio of 10ml / g, and put 1 A stirring bar with a diameter of 7 mm was used to react for 45 min at a temperature of 50 °C and a rotation speed of 500 rpm; where FeCl 3 The mass concentration of the solution is 10%, CuCl 2 The mass concentration of the solution is 15%, AlCl 3 The mass concentration of the solution is 8%, NH 4 The molar concentration of the Cl solution was 1.0 mol / L; after the reaction, the samples were washed, dried, and weighed. Then it is completely stripped, and after the reaction is finished, the stripped sample is taken out from the stripping solution, cleaned, dried, weighed, and then the stripping rate is calculated according to the two stripping results.

[0031] For the deplating solu...

Embodiment 3

[0034] Wash the waste ABS electroplated parts in sequence with water, ethanol and acetone to obtain the cleaned ABS electroplated parts; put 4g of the cleaned ABS electroplated parts in the compound chloride salt solution system according to the liquid-solid volume mass ratio of 10ml / g, and put 1 A stirring bar with a diameter of 7 mm was used to react for 60 min at a temperature of 50 °C and a rotation speed of 500 rpm; where FeCl 3 The mass concentration of the solution is 8%, CuCl 2 The mass concentration of the solution is 10%, AlCl 3 The mass concentration of the solution is 10%, NH 4 The molar concentration of the Cl solution was 1.0 mol / L; after the reaction, the samples were washed, dried, and weighed. Then it is completely stripped, and after the reaction is finished, the stripped sample is taken out from the stripping solution, cleaned, dried, weighed, and then the stripping rate is calculated according to the two stripping results.

[0035] For the deplating solu...

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Abstract

The invention belongs to the technical field of resource recycling of waste ABS electroplated parts, and particularly relates to a deplating method for a metal plating layer on the surface of a wasteABS electroplated part. The method comprises the following steps that firstly, the surface of the waste ABS electroplating piece is cleaned to remove dust, and then the waste ABS electroplating pieceis soaked in an absolute ethyl alcohol solution and an acetone solution for several minutes; then the pretreated waste ABS electroplating piece is put into a compound chloride salt solution system fora reaction, so that efficient deplating of metal copper, nickel and chromium on the surface of the electroplating piece can be achieved; and copper in the reaction liquid is recovered through electrolysis, nickel is separated through extraction, chromium is directly recycled through filtering, and full-component resource recycling of the surface metal is achieved. According to the deplating method for the metal plating layer on the surface of the waste ABS electroplated part, the compound chlorine salt system is used as a deplating agent, an acid-base-free reagent is used, the whole process is clean and efficient, no waste gas is generated, the operation is environmentally-friendly, the ABS plastic matrix is free of damage, and the resource utilization value of the recycled plastic can beincreased.

Description

technical field [0001] The invention belongs to the technical field of resource recovery and utilization of waste ABS electroplating parts, in particular to a method for deplating metal coatings on the surface of waste ABS electroplating parts. Background technique [0002] Plastic electroplating parts are widely used in the fields of automobile, sanitary ware, toy manufacturing and other fields due to their light weight, beautiful appearance, corrosion resistance, wear resistance and easy injection molding, and have received unanimous praise. The demand for plastic electroplating parts in my country is about 200,000 tons per year; 80-90% of them are ABS electroplating parts. Because ABS, as an organic polymer material, is a terpolymer of acrylonitrile (A), butadiene (B), and styrene (S), the relative contents of the three monomers can be changed arbitrarily. into various resins. Due to the structural characteristics of ABS, by controlling the content of butadiene (B) in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F1/18C23F1/26C23F1/30C22B7/00C22B15/00C22B23/00C22B34/32C25C1/12
CPCC22B7/007C22B15/0069C22B23/0423C22B34/32C23F1/18C23F1/26C23F1/30C25C1/12Y02P10/20
Inventor 苑文仪梁睿王景伟王临才王晓岩白建峰张承龙
Owner 南通睿科环保科技有限公司
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