Product Introduction
CONAP® EN-5851 is a two-component, flame-retardant polyurethane potting system designed to protect and encapsulate sensitive electronic assemblies. With low-stress curing and flexibility in cold environments, this system ensures superior thermal and mechanical protection.
Features of CONAP® EN-5851:
- Flame retardant with UL94 V-0 rating for safety.
- Low Tg (-45°C) for flexibility in cold environments.
- Low-stress cure to safeguard delicate components.
- Compliant with RoHS 2.0 (Directive 2011/65/EU).
- Robust thermal and mechanical protection for long-term reliability.
Applications of CONAP® EN-5851:
- Potting and encapsulation of electronic modules and circuit boards.
- Ideal for low-temperature flexible assemblies.
- Used in consumer electronics, industrial devices, and automotive electronics.
About Prostech
Prostech Philippines is a one-stop solution provider for specialty materials and equipment across electronics manufacturing, from PCBA to final assembly. Our core material and equipment solutions include:
- PCB Assembly Materials
- Cleaning & Degreaser
- Circuit Board Protection
- Thermal Management Solutions
- EMI Shielding
- General Assembly Adhesives
- Elastomeric Materials
- Process Equipment: Potting & Coating Systems, UV/ Heat Curing, Plasma Treatment, Tape placement automation, and cleaning machines
Technical Added Value to customer
Prostech offers customized material and process equipment solutions with engineering support throughout R&D, production process optimization, and performance validation. Our in-house lab located in Alabang, Muntinlupa is equipped to conduct electronics material testing, application simulation, and adhesive validation, helping customers reduce the need for onsite trials and accelerate implementation.
International Supply Chain Advantage
Regional warehouse hubs across Vietnam, Singapore, Malaysia, and the Philippines ensure cross-border reliable supply. In Philippines PEZA-bonded warehouse located at Lima Industrial Park, Batangas enables Prostech to provide responsive, demand-based delivery and significantly shortens standard lead time for Philippines customers.
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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 | % |



