Epoxy zinc-rich powder
We are a manufacturer based in China, specializing in high-quality Epoxy zinc-rich powder for industrial clients worldwide. Technical support and custom formulation available.
Category：powder Coating | Brand：MT
Introduction
Epoxy zinc-rich powder coating is designed for metal components and infrastructure requiring enhanced corrosion protection. It can be used as a protective base powder in coating systems for applications such as bridges, cabinets, and other facilities exposed to demanding environments. Proper substrate pretreatment and application procedures are essential to achieving the required coating performance.
PRODUCT TYPE
Epoxy Zinc-Rich Powder
POWDER SPECIFIC GRAVITY
1.5–2.0 g/cm³
CURING CONDITIONS
200°C / 12 min; 180°C / 15 min
Workpiece surface temperature
STORAGE STABILITY
12 Months
Stored below 30°C
Product Features
✓Enhanced Corrosion Protection
Designed to improve the corrosion resistance of metal coating systems when properly applied.
✓Good Coating Adhesion
The supplied test results include dry adhesion ratings under ASTM, ISO, and GB/T methods.
✓Mechanical Performance
The reported results cover bending, cupping, impact resistance, and pencil hardness.
✓Manual or Automatic Spraying
Compatible with manual or automatic powder spraying equipment. Automatic spraying is recommended for more consistent coating application.
Product Advantages
✓Suitable for Infrastructure
Developed for protective coating systems used on bridges, cabinets, and other important metal facilities.
✓Recoverable Overspray Powder
Unsprayed powder can be recovered through a suitable powder collection and recycling system.
Applications
Bridges and Infrastructure
Metal components used in infrastructure coating systems that require corrosion protection.
Electrical Cabinets and Enclosures
Metal cabinets and enclosures requiring a protective coating system for their service environment.
Outdoor Metal Facilities
Metal structures and facilities exposed to outdoor conditions, subject to the requirements of the complete coating system.
Corrosion-Protection Base Coats
Base powder applications in coating systems designed to meet project-specific corrosion protection requirements.
Physical Properties
| Test Item | Test Standard | Reported Result |
|---|---|---|
| Bending | ASTM D522 | Passed; curvature diameter: 5 mm |
| GB/T 1731 | Passed; curvature diameter: 2 mm | |
| Dry Adhesion | ASTM D3359 | Passed; 5B |
| ISO 2409 | Passed; Grade 0 | |
| GB/T 9286 | Passed; Grade 0 | |
| Cupping | ISO 1520 | Passed at 5 mm; no coating cracks or detachment |
| GB/T 9753 | Passed at 5 mm; no coating cracks or detachment | |
| Impact Resistance (Direct Impact) | ASTM D2794 | ≥50 kg·cm |
| GB/T 9753 | 50 kg·cm | |
| Pencil Hardness (Scratch Hardness) | ASTM D3363 | ≥H |
| GB/T 6739 | ≥H |
Curing Conditions
| Workpiece Surface Temperature | Curing Time |
|---|---|
| 200°C | 12 minutes |
| 180°C | 15 minutes |
Curing time begins when the workpiece reaches the specified surface temperature. Confirm the curing schedule against the current technical data sheet for the specific product.
Pretreatment
Metal substrates must be thoroughly cleaned and degreased before coating. For ferrous metals, zinc phosphating or iron phosphating may be used. Aluminum substrates may require an appropriate conversion treatment. Select the pretreatment process according to the substrate, corrosion protection requirements, and applicable environmental regulations.
Application and Spraying Parameters
| Parameter | Recommendation / Specification |
|---|---|
| Spraying Equipment | Manual or automatic powder spraying equipment |
| Atomizing Air Pressure | Approximately 0.5 bar |
| Primary Air Pressure | Approximately 0.5 bar |
| Spraying Voltage | 40–90 kV |
| Powder Recovery | Overspray powder can be recovered through a suitable recovery system. |
Adjust spraying parameters according to the equipment, workpiece geometry, and required coating quality. Use an appropriate powder recovery system and follow the equipment manufacturer’s operating instructions.
Coating Damage Repair
Surface preparation: Grind the damaged area and remove dust and loose particles using clean air.
Recoating: Apply the repair coating according to the approved repair procedure. The original guidance recommends reducing the spraying voltage during recoating; confirm the appropriate setting for the equipment and repair area.
Storage Conditions
- Store in an environment below 30°C.
- The stated storage stability is 12 months under the specified storage conditions.
- After the storage period expires, retest the powder before use. Use it only if the results meet the applicable requirements.
Safety Precautions
- Do not eat, drink, or smoke during powder spraying.
- Avoid inhaling powder dust and wear suitable respiratory protection.
- Consult the product-specific Safety Data Sheet (SDS) for detailed handling, storage, and protective equipment requirements.
Disclaimer: The information provided is based on currently available technical knowledge and is intended as a general guide. Actual performance depends on substrate condition, pretreatment, application parameters, curing conditions, and service environment. Users are responsible for verifying product suitability and complying with applicable local regulations. Consult the latest technical data sheet and Safety Data Sheet before use. Product specifications and recommendations are subject to the manufacturer’s current terms of sale.
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