Product Description
CONAP® EN-5851 is a two-component, flame-retardant polyurethane potting system formulated for the protection and encapsulation of sensitive electronic assemblies. Designed to offer low-stress curing and flexibility at low temperatures, it ensures excellent performance and component protection across a wide range of conditions.
Features of CONAP® EN-5851
- Flame retardant: UL94 V-0 rated
- UL RTI 130°C approved
- Low Tg (-45°C) for flexibility in cold environments
- Low-stress cure to safeguard delicate electronic components
- Compliant with RoHS 2.0 (Directive 2011/65/EU)
- Offers robust thermal and mechanical protection
Applications of CONAP® EN-5851
- Potting and encapsulation of electronic modules and circuit boards
- Ideal for assemblies requiring flame retardancy and low-temp flexibility
- Used in consumer electronics, industrial devices, and automotive electronics for enhanced environmental and mechanical protection
Properties in Cured Condition (24h RT + 15h @ 60°C)
| Property | Conditions | Test Method | Value | Units |
|---|---|---|---|---|
| Density | 25°C | ASTM D792 | 1.37 – 1.41 | g/ml |
| Hardness | 25°C | ASTM D2240 | 85 – 90 (Shore A), 40 – 50 (Shore D) | – |
| Glass Transition (Tg) | – | ASTM D3418 | -5 to +10 | °C |
| Water Absorption (240h, RT) | – | – | 0.2 – 0.3 | % |
| Water Absorption (2h, 100°C) | – | ASTM D570 | 0.8 – 1.0 | % |
| Linear Thermal Expansion (Tg -10°C) | – | ASTM E831 | 70 – 80 | 10⁻⁶/°C |
| Linear Thermal Expansion (Tg +10°C) | – | ASTM E831 | 160 – 180 | 10⁻⁶/°C |
| Thermal Shock | 10 cycles | Olyphant | -40 to +170 | °C |
| Flammability | – | UL94 | V0 (13 mm) | – |
| Max Operating Temperature | – | UL746B | 130 | °C |
| Thermal Conductivity | 25°C | ASTM C518 | 0.50 – 0.60 | W/(m·K) |
| Dielectric Constant | 25°C | ASTM D150 | 4.5 – 5.0 | – |
| Loss Factor | 25°C | ASTM D150 | 100 – 130 x 10⁻³ | – |
| Volume Resistivity | 25°C | ASTM D257 | 3.0 x 10¹⁴ – 5.0 x 10¹⁴ | Ω·cm |
| Dielectric Strength | 25°C | ASTM D149 | 21 – 24 | kV/mm |
| Tensile Strength | – | ASTM D638 | 4 – 6 | MN/m² |
| Elongation at Break | – | ASTM D638 | 50 – 60 | % |
