The LE-9518/LH-9518 Outdoor Epoxy Resin System is a premium two-component, non-premixed solution engineered for
demanding outdoor electrical insulation applications. Designed for
both Automatic Pressure Gelation (APG) and Vacuum
Casting processes, this hot-curing epoxy resin delivers
exceptional resistance to UV radiation, thermal shock, and
environmental stress cracking. Ideal for medium-to-high voltage
components like insulators, current transformers (CT), and voltage
transformers (VT), it ensures long-term reliability in harsh
conditions.
Key Features & Advantages
- Extreme Weather Resistance: Superior UV stability and thermal shock
resilience (-40°C to 150°C).
- High Dielectric Performance: Critical for 35kV+ outdoor insulation
systems.
- Dual-Process Compatibility: Optimized for APG (fast curing) and
vacuum casting (precision molding).
- Low Volatility: Vapor pressure <0.01 Pa (resin) and 0.5 Pa
(hardener) enhance workplace safety.
- Mechanical Robustness: Withstands high mechanical stress in power
infrastructure.
Technical Specifications
| Property | LE-9518 Resin | LH-9518 Hardener |
|---|
| Appearance | Transparent, viscous liquid | Transparent, light yellow liquid |
| Viscosity @25°C | 600–1500 mPa·s | 300–800 mPa·s |
| Epoxy Value | 5.0–5.9 Eq/kg | – |
| Density @25°C | 1.16–1.20 g/cm³ | 1.17–1.24 g/cm³ |
| Flash Point | ~135°C | ~140°C |
| Vapor Pressure @25°C | <0.01 Pa | ~0.5 Pa |
Processing Parameters
| Method | Mixing Temp | Mold Temp | Gel Time | Post-Cure |
|---|
| APG Injection | 40°C (1–2 hrs) | 130–150°C | 10–30 min | 130–140°C × 6–10 hrs |
| Vacuum Casting | 60°C (1–2 hrs) | 80–100°C | 3–6 hrs | 130–140°C × 6–10 hrs |
Applications
- High-Voltage Insulators: Resists tracking and erosion under
pollution.
- Transformer Encapsulation: Protects CT/VT coils from moisture and
salt spray.
- Embedded Poles: Ensures structural integrity in coastal/industrial
zones.
- Renewable Energy Components: Wind turbine sensors, solar farm
switchgear.
FAQ
Q: What certifications does this epoxy system hold?
A: Complies with IEC standards for outdoor electrical insulation
(custom certifications available).
Q: Can filler be added?
A: Yes, silica fillers (e.g., 300–400 phr) enhance mechanical
strength.
Q: Is it suitable for salt-heavy environments?
A: Yes, exceptional corrosion and salt-fog resistance.
Q: Minimum order quantity (MOQ)?
A: 10KG (20/220/1200KG drum options).
