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| MOQ; | MOQ100KG，From China |
| Feature | Powder Coating & Surface Finishing Solutions |
| Classification | Powder Coating |
| Advantage | Professional, Fast Delivery, Customizable | Samples | Apply for free，Contact us now. |
MT-EL-HLF59R is a one part, 100 % solids, epoxy powder coating for insulation of wire and busbars. Designed for electrostatic spray application it has excellent resistance against heat, chemicals and moisture. The coating has a good edge coverage and flexibility. It is serviceable up to 130° C.
| Typical value | Method | |
| Binder System | Epoxy resin | |
| Density | 1.75 – 1.85 g/cm³ | ISO 8130-2 |
| Gel time at 200° C | 30 – 50 sec. | modified ISO 8130-6 |
| Storage stability | 6 months from date of manufacture at ≤ 23° C | |
| Preheating temperature | 190 – 235° C object temperature | |
| Post cure conditions | 5 – 10 min. at above temperature | |
| Particle size distribution | < 32 µm = 25 – 40 % < 160 µm > 99.5 % | Malvern ISO 8130-1 |
| Color | grey, ca. RAL 7047 | |
| Recommended film thickness | 200 – 300 µm | |
| Flow | smooth | |
| Gloss at 60° angle | 40 – 60 units | ISO 2813 |
| Cross cut | Gt 0 | DIN EN ISO 2409 |
| Impact resistance | > 5 Joule | DIN 3476-1 |
| Elongation | > 5 % | DIN 3476-1 |
| Hardness | > 100 | DIN EN ISO 2815 |
| Pencil hardness | 5 H | DIN EN 13523-4 |
| Glass transition temperature | 65 ± 7° C (Tg1) 112 ± 5° C (Tg2) 40 – 60 J/g (Delta H) | ISO 11357-2 Inflection point Inflection point |
| Temperature index | 130° C (Class B) | IEC 60216-1 |
| Water absorption (40 h / 23° C) | < 1 % | ASTM D 570 |
| Thermal conductivity | 0.4 – 0.5 W/(m·K) | DIN EN 821 |
| Specific surface resistivity | > 1013 Ω | IEC 60093 |
| Dielectric strength | 45 kV/mm | IEC 60243-1 |
| Dissipation factor tan δ, 25° C Dissipation factor tan δ, 105° C | < 0.01 < 0.01 | ASTM D 150 ASTM D 150 |
| Dielectric constant (100 Hz – 1 MHZ) | 4.0 | ASTM D 149 |
| Comparative tracking index (CTI) | CTI 600 / CTI 175M-1.1 | IEC 60112 |
| UL 94 Vertical Burning Test | V-0 | IEC 60695-11-10 |
| Hot wire ignition (HWI) | ≥ 120 sec. | IEC 60695-2-20 |
| High current arc ignition (HAI) | ≥ 150 | UL 746A Section 32 |
Powder coating is a dry finishing process used to apply a protective and decorative coating on metal or other surfaces. Instead of using liquid paint, fine powder particles (usually made of polyester, epoxy, or hybrid resins) are electrostatically charged and sprayed onto a conductive surface. The coated object is then baked in an oven, where the powder melts, flows, and cures into a smooth, durable finish.
Key features:
Durable, hard finish
Resistant to scratches, corrosion, and UV
Environmentally friendly (no VOCs)
Powder coating offers several advantages over traditional liquid painting:
Durability: Resistant to chipping, scratching, fading, and wear.
Corrosion Protection: Provides excellent protection against rust and chemicals.
Environmentally Friendly: No volatile organic compounds (VOCs) and minimal waste.
Efficiency: Overspray can be collected and reused, up to 99% material utilization.
Uniform Finish: Smooth, even coating without runs or drips.
Cost-Effective: Single-coat systems can achieve high film thickness, reducing labor and energy.
Aesthetic Variety: Wide range of colors, textures, and effects.
The curing temperature depends on the type of powder used:
Epoxy powder: ~160–200°C (320–392°F)
Polyester powder: ~180–210°C (356–410°F)
Hybrid (Epoxy-Polyester) powder: ~180–200°C (356–392°F)
Typical curing time: 10–20 minutes depending on thickness and oven type.
Always follow the powder manufacturer’s specifications for best results.
The powder coating process usually follows these steps:
Surface Preparation:
Clean the surface thoroughly (remove oil, grease, rust, or dirt)
Methods: chemical cleaning, sandblasting, or phosphating
Pre-Treatment:
Apply a conversion coating or primer if needed to improve adhesion
Powder Application:
Spray the powder using an electrostatic spray gun or fluidized bed
Curing:
Bake the coated object in an oven at the recommended temperature for the powder type
The powder melts and forms a continuous, smooth film
Cooling & Inspection:
Let the coated item cool
Inspect for defects, uniform coverage, and desired thickness
Equipment Needed:
Electrostatic spray gun
Compressed air supply
Powder feed hopper or container
Grounding of the object
Steps:
Ground the object: Ensures the charged powder is attracted to the surface.
Spray evenly: Hold the gun 6–12 inches from the surface, moving in smooth, overlapping strokes.
Apply sufficient powder: Ensure full coverage without excessive buildup.
Cure immediately: Transfer the sprayed item to the curing oven to fuse the powder into a solid coating.
Tips:
Maintain consistent speed and distance while spraying.
Use proper ventilation to reduce airborne powder accumulation.
Test a small area to check film thickness and color before full application.
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