Deplating agents, also known as stripping agents, are critical in the surface finishing industry, particularly in the maintenance and reprocessing of plated components. As a leading supplier of specialized surface treatment solutions, we offer a comprehensive range of high-performance deplating agents designed for various industrial applications. Our advanced formulations ensure safe, fast, and residue-free stripping, meeting the stringent requirements of industries such as electronics, automotive, aerospace, and precision engineering.
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Principles of Deplating Agent
Deplating agents are chemically engineered solutions designed to selectively dissolve or loosen metallic or non-metallic coatings from substrates through controlled electrochemical or chemical reactions. The underlying principles vary depending on the target coating and base material but generally involve one or more of the following mechanisms:
- Electrochemical Dissolution (for Conductive Coatings)
- Oxidation-Reduction (Redox) Reactions:
Deplating agents for metals (e.g., nickel, chromium, copper) often function as electrolytes that facilitate anodic dissolution. The stripping solution oxidizes the metal coating (anodic reaction) while a reducing agent or external current accelerates the process.
Organic complexing agents (e.g., EDTA, cyanide-free alternatives) bind to dissolved metal ions, preventing redeposition and enhancing stripping efficiency.
- Chemical Dissolution (for Non-Conductive or Conversion Coatings)
Anodic oxide films (e.g., aluminum anodized layers) are dissolved using strong alkaline solutions (e.g., NaOH), which hydrolyze the Al2O3 matrix.
PVD coatings may require specialized acidic or oxidizing baths to break metal-nitride/oxide bonds (e.g., TiN stripping with H2O2/H2SO4).
Polymer-based coatings (e.g., photoresists) are removed via oxidative agents like chromic acid or eco-friendly alternatives (e.g., ozone-based systems).
- Physical-Mechanical Action
Surfactants in the solution reduce surface tension, allowing chemicals to penetrate coating-substrate interfaces, promoting lift-off (common for multilayer plating).
Hydrogen gas generated during acid-based stripping (e.g., HCl for zinc) mechanically disrupts adhesion.
Why Partner With Us?
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Our products undergo strict quality inspection to ensure performance consistency and compliance with environmental and safety standards.
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We serve customers worldwide with efficient logistics and responsive after-sales service to ensure your operations run smoothly.
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Backed by a team of seasoned professionals, we offer technical consultation and support to help you optimize your surface treatment processes.
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Our stripping agents are designed with low toxicity and minimal environmental impact, aligning with global green manufacturing trends.
