Technique used for ABS plastic substrate chemical plating pre-processing

An ABS plastic, chemical plating technology, applied in liquid chemical plating, metal material coating process, coating and other directions, can solve the problems of low operability, unsuitable for industrial production, complex composition of treatment liquid, etc., to achieve operability The effect of high performance, reduced processing steps, and reduced difficulty

Inactive Publication Date: 2008-02-20
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The composition of such treatment liquid is relatively complex, and toxic and carcinogenic solvents are used, the operability is not high, and it is not suitable for large-scale industrial production

Method used

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  • Technique used for ABS plastic substrate chemical plating pre-processing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Put the degreased ABS test piece into the microetching solution prepared by 36% hydrogen peroxide and 98% concentrated sulfuric acid with a volume ratio of 1:2 for 5 minutes, wash with water, and then immerse in the microetching solution containing 0.5g chitosan CTS powder. Treat in 100ml 1% acetic acid solution for 10min, then dry at 50°C for 80min. into the PdCl 2 Adsorb in a solution containing 0.1g / L HCl 2.0g / L for 15min at a temperature of 50°C, wash with water, and use NaH 2 PO 2 The 5g / L solution was reduced for 5 minutes, washed at 40°C, and then placed in the electroless nickel plating solution for electroless plating.

[0032] The obtained coating is uniform and dense, and has good bonding force.

Embodiment 2

[0034] Change the volume ratio of hydrogen peroxide and sulfuric acid in Example 1 to 1:4, and all the other conditions are the same as in Example 1.

[0035] The obtained coating is uniform and dense, and has good bonding force.

Embodiment 3

[0037] Change the mass of the CTS powder in Example 2 to 0.2 g, and the film-forming treatment time to 5 minutes, and the other conditions are the same as in Example 2.

[0038]The obtained coating is uniform and dense, and has good bonding force.

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Abstract

The invention relates to a new art applied in the chemical plating preprocess of ABS plastic body. With the biomacromolecule-chitosan (CTS) or the film forming performance of chitosan derivative and the chitosan-sorption to the target, the invention reduces and obtains the active site(Pd0) which can catalyze the chemical nickel plating at the body surface with chemical method; thus, the chemical sorption replaces the traditional physical sorption which is applied in the activation and sensitization of Pd/Sn colloid of chemical nickel plating preprocess of n-conducting body surface. The stabilization of the art is strengthened, the cost is reduced and the chrome and tin pollution to the environment in the traditional art are avoided; particularly, the chemical sorption replacing the physical sorption can increase the bonding force of the plating layer and body. The plating layer is evenly dense after the SEM detecting the shape of plating layer. And the heat vibration test and the scratch test show that the bonding force of the plating layer is great.

Description

【Technical field】: [0001] The invention belongs to the technical field of plastic processing, and in particular relates to a new process for the pretreatment of ABS plastic base electroless plating. 【Background technique】: [0002] There are many methods of plastic metallization, among which electroless plating is currently the most widely used processing method. Electroless plating mainly uses a reducing agent to preferentially reduce the metal ions in the solution on the surface of the catalytic object under the catalytic action of a catalytically active substance to form a metal coating with self-catalytic ability, so that it can be deposited continuously to form a certain thickness plating. Since ABS plastic does not have electrical conductivity and the surface does not have catalytic activity, it is very important to activate the surface of ABS plastic, which will directly affect the quality of subsequent chemical plating. [0003] Activation is the introduction of ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/20C08L55/02C08J7/04
Inventor 张宝贵唐雪娇曹梦毕成良闫丽娟
Owner NANKAI UNIV
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