Technical data sheet for Robnor Resins PX439N epoxy resin, detailing properties, specifications, handling and safety information.
Robnor Resins PX439N is a thermally conductive, flame‑retardant epoxy resin designed for potting and encapsulating electronic assemblies. It offers high electrical insulation, low shrinkage, excellent adhesion to plastics and substrates, and complies with RoHS, WEEE and UL94‑V0 standards.
The product is supplied in bulk, twin‑pack or kit formats, with detailed cure schedules, cleaning recommendations and storage guidelines to ensure optimal performance and safety during use.
| Specific Gravity | 2.0 g/ml |
|---|---|
| Viscosity (25 °C) | 40000 mPa·s |
| Mix Ratio by Weight | 13.8 : 1 |
| Thermal Conductivity | 1.20 W/mK |
| Dielectric Strength | 18 kV/mm |
| UL94‑V0 Rating | Yes |
| RoHS Compliant | Yes |
Full cure can be achieved in 24 hours at 25 °C, 4 hours at 60 °C, 6 hours at 80 °C, or 2 hours at 80 °C for faster processing.
Use Robnor Resins TS130, a non‑flammable cleaning agent, to remove uncured or cured material from tools and surfaces.
Wear gloves, safety glasses or goggles, and overalls; ensure adequate ventilation or local exhaust ventilation during curing.