• Item Name: EPIC S7302 Series
• Manufacturer: Epic Resins
• Technologies: HTPB-based two-component polyurethane potting compounds
• Color: Black, Blue, White (Part B Amber; mixed Black, Blue, or Off-White depending on grade)
• Cure Type: Room temperature cure (10–12 hours @ 25˚C) or heat cure (3 hours @ 65˚C)
• Package Size: Contact to Techniq VN for details.
• Shelf Life: 6 months
The Epic S7302 Series consists of HTPB-based two-component polyurethane potting compounds developed for electronics exposed to severe environmental conditions. These compounds provide low mixed viscosity for excellent flow, reliable adhesion to plastics and metals, and thermal cycling endurance from –40 °C to 135 °C, with excursions up to 160 °C. They cure at room temperature with a 4:1 volume mix ratio, medium Shore A hardness, and RoHS compliance. Designed to pass UL94HB, they deliver moisture and contaminant protection while maintaining flexibility and thermal stability.
Automotive under-the-hood switches and sensors
Sirens and warning signals
LED outdoor displays
Renewable energy electronics
Underwater sensors
Control modules
Relays
| Property | Unit | Part A | Part B | Mixed / Cured |
|---|---|---|---|---|
| Mix Ratio | – | – | – | 100:19.5 (by weight), 4:1 (by volume) |
| Color | – | Black / Blue / White | Amber | Black / Blue / Off-White |
| Viscosity @ 25 °C | cps | 6,400–7,000 | 80–100 | 2,500–3,500 |
| Weight per Gallon | lb/gal | 11.85–12.15 | 9.25–9.35 | – |
| Gel Time (S7302 range) | min @ 25 °C | – | – | 2–55 (depending on version) |
| Pot Life | min | – | – | 2–50 |
| Cure Schedule | h | – | – | 10–12 @ 25 °C; 3 @ 65 °C |
| Hardness | Shore A | – | – | 68–72 |
| Tensile Strength | psi | – | – | 605–680 (25 °C); 1000–1400 (–25 °C) |
| Elongation | % | – | – | 190–225 (25 °C) |
| Operating Temp | °C | – | – | 110–120 |
| Glass Transition (Tg) | °C | – | – | –50 |
| Thermal Conductivity | W/mK | – | – | ~0.7 |
| Lap Shear (Nylon–Nylon) | psi | – | – | 395–465 |
| Water Absorption | % | – | – | 0.29–0.31 (24h, 25 °C); up to 3.18 (7d, 85 °C) |
| Dielectric Strength | V/mil | – | – | 360–370 |
| Volume Resistivity | ohm·cm | – | – | 2.56e+12 |
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Techniq Vietnam provides end-to-end materials and process solutions, integrating world-class technologies in adhesives, soldering, and thermal management.
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At Techniq, our mission is to connect cutting-edge materials, processes, and equipment with customer needs, enabling efficiency, reliability, and long-term value creation.
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