Resins For Anti-corrosive Coatings
We are a manufacturer based in China. We specialize in providing high-quality Resins For Anti-corrosive Coatings for industrial clients across various sectors. Whether you need chemicals consultation or technical support, our team is here to help.
Category：Paint chemicals Own Brand：MT /MOQ:100KG /From China/ B2B only.
Introduction
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.
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