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Palladium-free plastic chemical plating method for generating reductant film

A technology of electroless plating and reducing agent, which is applied in the direction of liquid chemical plating, metal material coating process, coating, etc., can solve the problems of reducing operation steps, complex nickel ion membrane method, etc., and achieve reduction of process cost and speed The effect of fast and long service life

Inactive Publication Date: 2011-08-17
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, on the whole, the method of nickel ion membrane is also somewhat complicated.
The patent application CN101067206A first needs to configure a complex polymer film-forming agent to form a film, then absorb nickel ions, and finally restore, with drying and other operations in the middle, which is a bit complicated
The patent application of CN101381865A effectively realizes film formation and nickel ion adsorption at the same time, reducing the operation steps, but it takes 30min to 60min to dry

Method used

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  • Palladium-free plastic chemical plating method for generating reductant film
  • Palladium-free plastic chemical plating method for generating reductant film
  • Palladium-free plastic chemical plating method for generating reductant film

Examples

Experimental program
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Effect test

Embodiment 1

[0049] Soak the ABS plastic substrate in a mixed solution of sodium carbonate and trisodium phosphate at a temperature of 50°C for 2 minutes to remove oil, wherein the mass volume concentration of sodium carbonate is 25g / L, and the mass volume concentration of trisodium phosphate is 25g / L; then soak the plastic base material after chemical degreasing in a mixed solution of chromic anhydride and concentrated sulfuric acid at a temperature of 65°C for 10 minutes to roughen, wherein the mass volume concentration of chromic anhydride is 200g / L, concentrated sulfuric acid The volume concentration is 8000mL / L; put the degreasing and roughened ABS plastic substrate into the reducing film-forming agent for 15s, and the reducing film-forming agent is formed by mixing methanol and ethanol at a volume ratio of 7:3 To the solvent, add 20g / L of sodium hydroxide, 5g / L of degrading agent biphenyl, 25g / L of sodium borohydride and 5mL / L of silane coupling agent KH-560 in proportion to the volu...

Embodiment 2

[0051] Soak the ABS plastic substrate in a mixed solution of sodium carbonate and trisodium phosphate at a temperature of 70°C for 5 minutes to remove oil, wherein the mass volume concentration of sodium carbonate is 25g / L, and the mass volume concentration of trisodium phosphate is 25g / L; then soak the plastic base material after chemical degreasing in a mixed solution of chromic anhydride and concentrated sulfuric acid at a temperature of 70°C for 10 minutes to roughen, wherein the mass volume concentration of chromic anhydride is 200g / L, concentrated sulfuric acid The volume concentration is 8000mL / L; put the degreasing and roughened ABS plastic substrate into the reducing film-forming agent for 30s. To the solvent, add 10g / L of sodium hydroxide, 2g / L of degrading agent biphenyl, 15g / L of sodium borohydride and 5mL / L of silane coupling agent KH-560 in proportion to the volume of the solvent. The film-forming time of the base material in the reduced film-forming agent was 3...

Embodiment 3

[0053] Soak the ABS plastic substrate in a mixed solution of sodium carbonate and trisodium phosphate at a temperature of 70°C for 5 minutes to remove oil, wherein the mass volume concentration of sodium carbonate is 25g / L, and the mass volume concentration of trisodium phosphate is 25g / L; then soak the plastic base material after chemical degreasing in a mixed solution of chromic anhydride and concentrated sulfuric acid at a temperature of 70°C for 10 minutes to roughen, wherein the mass volume concentration of chromic anhydride is 200g / L, concentrated sulfuric acid The volume concentration is 8000mL / L; put the degreasing and roughened ABS plastic substrate into the reducing film-forming agent for 20s, and the reducing film-forming agent is prepared by mixing methanol and ethanol at a volume ratio of 1:1. In the solvent, add sodium hydroxide, 2g / L degrading agent biphenyl, 20g / L sodium borohydride and silane coupling agent KH-5605mL / L in proportion to solvent volume. The fil...

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Abstract

The invention discloses a palladium-free plastic chemical plating method for generating reductant film. Reduction film-forming agent firstly generates a reductant film, and then nickel in waste liquid is reduced. The method of the invention has low cost, firm clad layer and simple technical process and can be suitable for palladium-free activation methods of different plastic base materials. The cost of compound activator used by the method of the invention is greatly lowered than that of palladium chloride activator adopted at present, and the properties such as radiance, the binding force and the like of the final plastic chemical plating are favorable.

Description

technical field [0001] The invention relates to a plastic chemical plating method, in particular to a palladium-free plastic chemical plating method for generating a reducing agent film. Background technique [0002] The wide application of plastics has brought great convenience to people's lives. However, due to the poor wear resistance, non-conductivity and easy deformation of plastics, their applications have been limited. In order to meet the requirements of plastic properties in special cases , using the chemical plating method, a layer of metal is plated on the plastic surface to improve the performance and processing characteristics of the plastic, so that the application range of the plastic is wider. There are many methods for the metallization of the plastic surface, and the most commonly used method at present is chemical plating. [0003] The general process of electroless plating on plastics is: substrate degreasing - roughening - sensitization - activation - de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C18/36C23C18/20C23C18/30
Inventor 胡小芳翁星星
Owner SOUTH CHINA UNIV OF TECH