Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Environment-friendly tin copper coating deplating solution and deplating method

An environment-friendly, stripping solution technology, applied in the field of chemical stripping of coatings, can solve the problems of increased stripping cost, difficult plating solution, etc., and achieves the effects of low cost, good stripping effect and high efficiency

Inactive Publication Date: 2018-06-05
苏州碳方新材料科技有限公司
View PDF5 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical applications, tin layer protection is often carried out outside the copper layer, which are two separate coatings; the use of a large amount of sodium nitrobenzoate will not only greatly increase the cost of stripping, but also make the strip after stripping Plating solution becomes difficult to handle

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Environment-friendly tin copper coating deplating solution and deplating method
  • Environment-friendly tin copper coating deplating solution and deplating method
  • Environment-friendly tin copper coating deplating solution and deplating method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A kind of environment-friendly tin-copper coating stripping solution, every liter of this environment-friendly tin-copper coating stripping solution comprises:

[0033]

[0034] The deplating method is as follows: first put the plated piece coated with tin-copper coating into 5% dilute sulfuric acid and soak for 1-3 minutes; wash the dilute acid solution with water; then put the plated piece into the environment-friendly tin In the copper plating deplating solution, aim at the plating layer and carry out deplating by pumping, and the deplating time is 0.5-5 minutes; after the deplating is completed, it can be washed with water and dried.

Embodiment 2

[0036] A kind of environment-friendly tin-copper coating stripping solution, every liter of this environment-friendly tin-copper coating stripping solution comprises:

[0037]

[0038]

[0039] The deplating method is as follows: first put the plated piece coated with tin-copper coating into 5% dilute sulfuric acid and soak for 1-3 minutes; wash the dilute acid solution with water; then put the plated piece into the environment-friendly tin In the copper plating deplating solution, aim at the plating layer and carry out deplating by pumping, and the deplating time is 0.5-5 minutes; after the deplating is completed, it can be washed with water and dried.

Embodiment 3

[0041] A kind of environment-friendly tin-copper coating deplating solution, every liter of this environment-friendly tin-copper coating deplating solution comprises:

[0042]

[0043]

[0044] The deplating method is as follows: first put the plated piece coated with tin-copper coating into 5% dilute sulfuric acid and soak for 1-3 minutes; wash the dilute acid solution with water; then put the plated piece into the environment-friendly tin In the copper plating deplating solution, aim at the plating layer and carry out deplating by pumping, and the deplating time is 0.5-5 minutes; after the deplating is completed, it can be washed with water and dried.

[0045] The stripping result of embodiment 1~3 is as follows:

[0046]

[0047] The present invention uses a hydrogen peroxide sulfuric acid system deplating solution, adds a deplating accelerator to the system, has stable properties and low cost, can effectively and quickly remove the tin-copper coating on the surfac...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to an environment-friendly tin copper coating deplating solution, every liter of the environment-friendly tin copper coating deplating solution comprises the following componentsby content: 500-700 g / L of sulfuric acid of 50%, 150-250 g / L of hydrogen peroxide of 35%, and 30-60 g / L of a deplating accelerant. The invention further provides an environment-friendly tin copper coating deplating method. The deplating solution has a stable property, is high in deplating efficiency, deplates cleanly, does not contain the raw materials like nitric acid, does not produce the noxious gas, and meets the environmental requirement.

Description

technical field [0001] The invention relates to the technical field of chemical deplating of coatings, in particular to an environment-friendly tin-copper coating deplating solution and a deplating method thereof. Background technique [0002] Because there are too many influencing factors involved in the electroplating process, many electroplating factories will encounter various unqualified coatings during the electroplating process. In addition, during the electroplating process, the coating will also be deposited on the hanger. Unqualified plating needs to be recycled to reduce costs, and the plating on the rack needs to be removed and reused. Therefore, in the electroplating industry, deplating is a very important link. [0003] In the electroplating process, especially in the preparation process of circuit boards, it is often necessary to perform tin plating after copper plating for protection. Unqualified tin-copper coatings and tin-copper coatings on hangers need to...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C23F1/18C23F1/30
CPCC23F1/18C23F1/30
Inventor 周成香
Owner 苏州碳方新材料科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com