Water-based Wax Emulsions for Passivation Sealants & Fingerprint-resistant Coatings

I. Core Functions

1. Enhanced Corrosion Resistance

• Forms a dense wax film over the passivation layer, blocking penetration of corrosive agents (e.g., moisture, salt spray), significantly improving salt spray resistance.
•  Compensates for the reduced protective properties of chromium-free passivation films in eco-friendly processes.

2. Improved Mechanical Protection

• Reduces surface friction coefficient (to 0.09–0.15), enhancing scratch/abrasion resistance during handling or packaging.
• Provides anti-blocking effects, preventing adhesion between stacked metal parts.

3. Optimized Surface Properties

• Increases coating slipperiness and improves tactile feel/appearance.
• Maintains surface smoothness and reduces fingerprint residue (used in fingerprint-resistant coatings).

II. Applications & Compatibility

1. Sealing for Zinc Plating Passivation

• Acts as a post-passivation sealer for galvanized layers, filling micro-cracks in chromate films to boost corrosion resistance by 7–10×.
• Widely used for fasteners (e.g., screws, nuts).

2. Acid System Compatibility

• Stable in acidic passivation systems containing chromium residues, preventing coating failure from ion reactions.

3. Light Metal Protection

• Compensates for performance gaps in chromium-free passivation of Al/Mg alloys via supplementary wax film protection.

III. Technical Advantages