EPOCAST 89537
Harmonization Code : 3506.91.90.99 | Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg ; Adhesives based on polymers of headings 3901 to 3913 or on rubber; Other ; Other
Main features
- Non-Sag Placement Control
- Low-Density, Glass-Fiber-Reinforced Syntactic
- Self-Extinguishing Epoxy Syntactic
Product Description
EPOCAST® 89537 A/B is a two-part, glass-fiber-reinforced epoxy syntactic developed for honeycomb core structures. The low-density, non-sag material can be trowelled or extruded for fastener and attachment potting, core splicing, and edge reinforcement, including vertical applications up to 1/2 inch (1.25 cm) thick. The mixed system forms a gray soft paste with a typical density of 0.90 g/cm³ and a 70-minute gel time for a 100 g mass at 25°C. It is self-extinguishing and meets the requirements of BMS 5-28 Type 32.
Key features
- Glass-fiber-reinforced syntactic: Two-part, low-density core filler for localized potting, splicing, and reinforcement.
- Non-sag vertical build: Can be applied vertically at thicknesses up to 1/2 inch (1.25 cm).
- Self-extinguishing performance: Meets the requirements of BMS 5-28 Type 32.
Applications / Suitable for
- Fastener and attachment potting in honeycomb core structures
- Honeycomb core splicing
- Core-edge reinforcement
- Vertical or overhead core-filling applications requiring non-sag placement
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Additional Information
As-supplied / before-processing properties
Typical component and mixed-system properties. Material temperatures should be above 18°C during mixing.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Appearance | A resin: white; B hardener: black; mixed system: gray | — | Visual |
| Density | A resin: 0.85; B hardener: 1.00; mixed system: 0.90 | g/cm³ | ASTM D1622; 25°C |
| A resin viscosity | Paste | — | ASTM D2196; 25°C |
| B hardener viscosity | 10,000 | cP | ASTM D2196; 25°C |
| Mixed-system viscosity | Soft paste | — | ASTM D2196; 25°C |
| Mix ratio | 100 : 18.5 | Parts by weight | A resin : B hardener |
| Gel time | 70 | min | 100 g mass at 25°C |
After-processing / final-state properties
Typical cured properties. Mechanical values below use Cure 1: seven days at 25 ± 1°C.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Compressive strength | 8.50 (58.6) | ksi (MPa) | ASTM D695; Cure 1 |
| Compressive modulus | 450 (3103) | ksi (MPa) | ASTM D695; Cure 1 |
| Lap shear strength | 1,200 (8.3) | psi (MPa) | ASTM D1002; aluminum-to-aluminum; Cure 1 |
| Weight gain after fluid immersion | TT-S-735: 0.40; MIL-M-5606: 0.37; low-density hydraulic fluid: 0.48; distilled water: 0.30 | % | ASTM D543; 24-hour immersion |
| Flammability burn rate | 1 (2.54) | in/min (cm/min) | Supplier-reported typical value |
