LOCTITE EA 9394
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
- Two-Part Aerospace Structural Epoxy Paste
- 177 deg C Service Temperature
- MMM-A-132 Qualified Epoxy
Product Description
LOCTITE® EA 9394 AERO is a two-part, thixotropic epoxy paste adhesive for structural bonding, repair, potting, filling, and liquid-shim applications in aerospace assemblies. It cures at room temperature, provides a 90-minute typical pot life for a 450 g mass at 25°C, and may also be heat cured for faster processing. The adhesive has a defined service temperature of 177 °C based on retention of at least 6.9 MPa tensile lap shear strength under ASTM D1002 testing. It is qualified to MMM-A-132 Rev B, Type I, Class 3, Form 3, Group 1, providing a documented military-specification basis for evaluating the material for applicable structural adhesive uses.
Key features
- Two-part structural epoxy paste: Thixotropic mixed material supports controlled application, gap filling, potting, filling, and liquid-shim use.
- Flexible cure options: Develops normal performance after 3–5 days at 25 °C or may be fully cured in 1 hour at 66 °C for suitable small-mass applications.
- 90-minute typical pot life: Measured for a 450 g mixed mass at 25 °C using ASTM D2471.
- MMM-A-132 qualification: Qualified to Rev B, Type I, Class 3, Form 3, Group 1 for the specification-defined adhesive category and requirements.
Applications / Suitable for
- Aerospace structural bonding and repair involving prepared metal and honeycomb assemblies.
- Potting and filling where a thixotropic structural epoxy paste is required.
- Liquid-shim and gap-filling applications evaluated under the applicable design, process, and qualification requirements.
Technical Specifications
General Properties
Physical Properties
Additional Information
As-supplied / before-processing properties
Typical properties of the separate components and mixed adhesive before cure.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Color | Part A: Gray; Part B: Black; Mixed: Gray | - | Uncured components and mixed adhesive |
| Viscosity | Part A: 400–800; Part B: 20–70; Mixed: 160 | Pa·s | 25°C; Brookfield HBT, component-specific spindle at 2.09 rad/sec |
| Density | Part A: 1.50; Part B: 1.00; Mixed: 1.36 | g/ml | Uncured components and mixed adhesive |
| Mix ratio | 100:17 | Parts by weight | Part A:Part B; volume measurement is not recommended for structural applications |
| Pot life | 90 | minutes | 450 g mass at 75°F/25°C; ASTM D2471 in water bath |
| Shelf life | 1 | year | Part A and Part B stored below 77°F/25°C |
After-processing / final-state properties
Typical cured-material and bonded-joint properties under the stated specimen, cure and test conditions.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Tensile lap shear strength | 4,200 / 28.9 | psi / MPa | ASTM D1002 at 77°F/25°C; cured 5 days at 77°F/25°C; phosphoric-acid-anodized 2024-T3 bare aluminum |
| Tensile lap shear strength at 350°F/177°C | 1,200 / 8.3 | psi / MPa | ASTM D1002; cured 5 days at 77°F/25°C; phosphoric-acid-anodized 2024-T3 bare aluminum |
| Tensile strength | 6,675 / 46.0 | psi / MPa | ASTM D638; 0.125 in/3.18 mm casting at 77°F/25°C |
| Compressive strength | 10,000 / 68.9 | psi / MPa | ASTM D695 at 77°F/25°C; rectangular cured specimens |
| Shore D hardness | 88 | Shore D | Cured bulk resin at 77°F/25°C |
| Glass transition temperature | Dry: 172 / 78; Wet: 154 / 68 | °F / °C | Cured bulk resin; dry and wet conditions reported separately |
| Thermal conductivity | 0.331 | W/(m·K) | Cured bulk-resin property |
| Volume resistivity | 4.05 × 1013 | ohm-cm | Cured bulk-resin electrical property |
