High-Tg Epoxy Resin for APG Process | Vacuum Casting & Electrical Insulating
LE-8216/LH-8216: UL-Certified Room Temperature Cure Epoxy for CT/PT Potting & Encapsulation
Flame-Retardant | UV/Weather-Resistant | High Dielectric Strength
Engineered for transformer encapsulation in Current Transformers (CT) and Potential Transformers (PT), LE-8216/LH-8216 delivers fast room temperature curing, eliminating energy-intensive ovens. This UL-certified, flame-retardant epoxy system combines a modified cyclic aliphatic epoxy resin (LE-8216) and weather-resistant anhydride hardener (LH-8216) for superior electrical insulation, moisture resistance, and vibration damping in demanding indoor/outdoor environments.
Key Features & Benefits
- Fast Ambient Cure: Saves energy with rapid curing at room temperature.
- Robust Protection: Shields CT/PT units from thermal shock, contaminants, and mechanical stress.
- Superior Insulation: High dielectric strength (>18 kV/mm) for high-voltage applications.
- Flame Retardant: UL 94 V-0 certified for safety-critical installations.
- Weatherproof: Exceptional UV/environmental resilience for outdoor use.
- Low-Viscosity Formulation: Penetrates intricate coils for void-free gap filling.
Applications
Ideal for:
- Transformer potting & encapsulation (CT/PT units)
- Medium/high-voltage insulators, bushings, and switchgear
- Electrical components requiring moisture-resistant protection
- Flame-retardant insulation in power infrastructure
Processing Methods
| Method |
Description |
| Vacuum Gravity Casting |
Traditional method for bubble-free transformer encapsulation under vacuum. |
| Automatic Pressure Gelation (APG) |
High-efficiency process for mass production of CT PT epoxy components. |
Material Properties
| Property |
Value/Description |
| Curing Temperature |
Room temperature (20-25°C) |
| Dielectric Strength |
>18 kV/mm |
| Thermal Shock Resistance |
Excellent (ASTM D2519) |
| Viscosity |
Low (optimized for deep gap filling) |
| Flame Rating |
UL 94 V-0 certified |
| Color Options |
Customizable via LC-series paste |
Formulation Guide
| Component |
Product |
Proportion (pbw) |
| Epoxy Resin |
LE-8216 |
100 |
| Hardener |
LH-8216 |
100 |
| Filler |
Silica Powder |
280-350 |
| Colorant |
LC-Series* |
3 |
*Add LC-series paste for UV-stable pigmentation.
Why Choose LE-8216/LH-8216?
This electrical-grade epoxy system excels as a potting compound for transformer manufacturing, offering unmatched electrical component protection. Its saturated cyclic aliphatic structure ensures long-term stability under thermal cycling, while silica-filled reinforcement enhances mechanical strength and dielectric performance. Compatible with vacuum casting and APG processes, it integrates seamlessly into existing production lines--ideal for creating reliable, flame-retardant CT/PT encapsulation with minimal energy input.
Keywords: Room temperature cure epoxy, CT PT epoxy, transformer potting, transformer encapsulation, electrical insulation epoxy, potting compound, flame retardant epoxy, UL certified epoxy, dielectric strength, vibration damping, moisture resistant, gap filling, electrical component protection, fast cure epoxy, low viscosity epoxy, thermal shock resistance, UV resistance, Automatic Pressure Gelation, vacuum casting.
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