China Factory Supply E-44 Epoxy Resin 127 - Fast Curing for PCB Potting & Composites
1. Product Overview
Epoxy Resin 127 (Equivalent to E-44 standard) is a bisphenol-A based epoxy resin formulated for demanding industrial applications. With its low viscosity (4,000-6,000 mPa·s at 25°C) and high epoxy value (0.41-0.47 eq/100g), it delivers superior flowability, deep penetration, and robust bonding across metals, composites, and plastics.
2. Key Technical Specifications
| Parameter | Value | Test Standard |
|---|---|---|
| Appearance | Transparent pale yellow liquid | Visual |
| Viscosity (25°C) | 4,000-6,000 mPa·s | GB/T 12007.4 |
| Epoxy Value | 0.41-0.47 eq/100g | GB/T 4612 |
| Hardener Ratio | 100:32-35 (With polyamide) | ISO 862 |
| Curing Time (25°C) | 24-48 hrs (Full cure) | ASTM D2471 |
| Heat Resistance | -30°C to +120°C | ASTM D648 |
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