• Item Name: EPIBOND® 8000 FR A/B
• Manufacturer: Huntsman
• Technologies: Epoxy, Fire Retardant, 2K Structural Adhesive
• Color: Contact to Techniq VN for details.
• Cure Type: Room Temperature / Thermal Post-Cure Options
• Package Size: Cartridges
• Shelf Life: 12 months
EPIBOND® 8000 FR A/B is a two-component, extrudable epoxy structural adhesive designed for aerospace applications requiring flame, smoke, and toxicity (FST) compliance according to FAR 25.853. It bonds composites, metals, and other dissimilar substrates without halogenated or antimony-based flame retardants. The adhesive features a convenient mix ratio, moderate work life, thixotropic gap-filling properties, and is easily dispensed from cartridges or metering equipment. Its high peel and shear strength, non-sag behavior, and wide service temperature range make it suitable for vertical and overhead applications, replacing mechanical fasteners to reduce weight and cycle time.
Aerospace Interior Applications: Overhead bins, galleys, and honeycomb panels.
Compatible Substrates: Composites, metals.
Markets: Automotive & Transportation, Aerospace & Aviation.
Application Method: Spread mixed adhesive on pretreated dry surfaces; layer thickness 0.004–0.012 in (0.1–0.3 mm) up to 0.12 in (3 mm). Clamp components immediately for even pressure during cure.
Before Mixing
| Property | Value / Condition |
|---|---|
| Physical Form | Paste |
| Density | 1.3 g/cm³ |
| Mix Ratio (W%) | 0.48 (Hardener : Resin) |
| Storage | 2–40°C, sealed, dry, away from sunlight |
| Shelf-life | 1 year |
| Halogen Content (Resin/Hardener) | Cl <1000 ppm / <150 ppm; Br Not detectable |
| Working Time | 50–55 min at 25°C |
| Gel Time (100 g, 25°C) | 65–70 min |
After Mixing
| Property | Test / Condition | Value |
|---|---|---|
| Lap Shear Strength, psi (MPa) – Al | 77°F (25°C) | 3,900 (26.9) |
| Lap Shear Strength, psi (MPa) – Al | 180°F (82°C) | 1,920 (13.2) |
| Tensile Strength, psi (MPa) | 77°F (25°C) | 5,260 (36.3) |
| Flexural Strength, psi (MPa) | 77°F (25°C) | 9,050 (62.4) |
| Compressive Strength, psi (MPa) | 77°F (25°C) | 16,300 (112.4) |
| Glass Transition Temp, Tg | DSC / DMA | 72.5°C / 70°C |
| Hardness | Shore D | 85 |
| Shear Modulus G’ | 77°F / 140°F / 158°F / 176°F | 1,506 / 814.4 / 2,114.4 / 37.1 MPa |
| Roller Peel Strength, pli (N/mm) | 0.02” & 0.04” Al | 23 (4.0) |
| Flame Extinguish Time | CFR 25.853 vertical burn | <10 sec |
| Smoke Density, Ds | ASTM E662, 4 min | 97 max |
| Toxic Gas Concentration, 4 min | HCN / CO / NOx / SO2+H2S / HF / HCl | 25 / 85 / 80 / 10 / 1.5 / 5 ppm |
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