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| OEM | OEM Services Provided |
| Feature | Good stability |
| Classification | Paint Additives |
| Advantage | Professional, Fast Delivery, Customizable | Samples | Apply for free，Contact Export Director now ↓ |
Performance Features
Good flexible, good adhesion to metal
Main Applications
Primer and topcoat of metal
Resins for Anti-Corrosive Coatings: Overview and Key Properties
| Category | Details |
|---|---|
| Resin Types | Epoxy, Polyurethane, Alkyd, Acrylic, Chlorinated Rubber |
| Primary Function | Protect metal substrates from corrosion |
| Form | Solvent-based, water-based, or high-solids |
| Curing Mechanism | Chemical crosslinking, oxidative drying, or moisture curing |
Key Resin Types & Properties
| Resin Type | Corrosion Resistance | Adhesion (ASTM D3359) | Chemical Resistance |
|---|---|---|---|
| Epoxy | Excellent (salt spray >1.000 hrs) | 5B | High (acids, alkalis) |
| Polyurethane | Very Good (salt spray 500–1.000 hrs) | 4B–5B | Moderate |
| Alkyd | Good (salt spray 300–500 hrs) | 3B–4B | Low |
| Acrylic | Moderate (salt spray 200–400 hrs) | 3B–4B | Moderate |
| Chlorinated Rubber | Excellent (salt spray >800 hrs) | 4B–5B | High (water, salts) |
Performance Requirements
| Property | Test Method | Industry Standard |
|---|---|---|
| Salt Spray Resistance | ASTM B117 | >500 hrs (industrial) |
| Adhesion (Wet/Dry) | ASTM D4541 | >3 MPa |
| Abrasion Resistance | ASTM D4060 | <50 mg loss (CS-10 wheel) |
| UV Stability | ASTM G154 | ΔE < 2.0 after 1.000 hrs |
Formulation Components
| Component | Function | Typical % |
|---|---|---|
| Base Resin | Film formation | 40–60% |
| Corrosion Inhibitors | Passive protection | 5–15% |
| Pigments | Barrier effect (e.g., zinc phosphate) | 10–25% |
| Additives | Rheology/UV stabilization | 1–5% |
Substrate Compatibility
| Metal Substrate | Recommended Resin | Pretreatment |
|---|---|---|
| Carbon Steel | Epoxy, Alkyd | Blast cleaning (Sa 2.5) |
| Galvanized Steel | Acrylic, Polyurethane | Light abrasion |
| Aluminum | Polyurethane, Epoxy | Chromate conversion |
| Stainless Steel | Epoxy, Silicone | Solvent degreasing |
Advantages vs. Limitations
| Resin Type | Advantages | Limitations |
|---|---|---|
| Epoxy | Best chemical resistance | Poor UV stability |
| Polyurethane | Weather resistance | High cost |
| Alkyd | Easy application | Limited durability |
| Chlorinated Rubber | Fast drying | Environmental concerns |
Market Trends
| Technology | Adoption Rate | Key Driver |
|---|---|---|
| Water-Based | 30% growth | VOC regulations |
| High-Solids | 25% growth | Reduced solvent use |
| Zinc-Rich Primers | Steady demand | Long-term protection |
Regulatory Compliance
| Standard | Requirement |
|---|---|
| VOC Limits | <350 g/L (US EPA) |
| REACH | SVHC compliance |
| IMO PSPC | Marine coating standards |
Summary
Anti-corrosive coating resins balance protection, durability, and environmental compliance. Epoxy resins dominate harsh environments, while polyurethanes excel in weather-exposed applications. Emerging technologies focus on eco-friendly formulations without compromising performance.
Declaration: The products displayed on this website are intended exclusively for industrial applications or scientific research. They are not intended for medical, pharmaceutical, or food use. In accordance with applicable laws and regulations, purchasing organizations must hold valid qualifications and approvals.
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