Loctite EA 9390 AERO
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
- Graphite- and Glass-Composite Repair
- Hot/Wet Strength and High Shear Modulus
- BMS 8-301 Heat-Cure Qualification
Product Description
LOCTITE® EA 9390 AERO Epoxy Paste Adhesive is a two-component, heat-curing epoxy developed for graphite- and glass-composite repair. The mixed adhesive has a typical viscosity of 100 Poise (10 Pa·s) at 77°F (25°C), supporting wetting and wet lay-up application. It combines good hot/wet strength with a high shear modulus and can be cured at temperatures from 200°F to 300°F (93°C to 149°C), depending on the required process schedule. The cured adhesive provides temperature-dependent lap shear performance on phosphoric-acid-anodized 2024-T3 bare aluminum and retains at least 1,000 psi (6.9 MPa) lap shear strength at an approximate service temperature above 350°F (177°C) under the stated ASTM D1002 test basis. The product is qualified to BMS 8-301.
Key features
- Composite-repair formulation: Suitable as a wet lay-up resin for graphite- and glass-composite repairs.
- Hot/wet mechanical performance: Combines good hot/wet strength with a high cured shear modulus.
- Flexible heat-cure schedules: Supports documented cures at 200°F, 250°F, or 300°F (93°C, 121°C, or 149°C).
Applications / Suitable for
- Graphite-composite repair
- Glass-composite repair
- Wet lay-up composite-repair processes
TDS, SDS & Technical Documents
Technical Specifications
Physical Properties
General Properties
Additional Information
As-supplied / before-processing properties
Typical component, mixed-material, storage, and processing data for LOCTITE® EA 9390 AERO.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Product type | Two-component epoxy paste adhesive | — | As supplied |
| Part A color | Light beige | — | Visual |
| Part B color | Blue | — | Visual |
| Mixed color | Violet | — | Visual |
| Part A viscosity | 940 / 94 | Poise / Pa·s | 77°F / 25°C; Brookfield HBT, spindle 6 at 20 rpm / 2.1 rad/s |
| Part B viscosity | 0.9 / 0.09 | Poise / Pa·s | 77°F / 25°C; Brookfield HBT, spindle 1 at 20 rpm / 2.1 rad/s |
| Mixed viscosity | 100 / 10 | Poise / Pa·s | 77°F / 25°C; Brookfield HBT, spindle 3 at 10 rpm / 1.05 rad/s |
| Part A density | 1.22 | g/mL | As supplied |
| Part B density | 0.94 | g/mL | As supplied |
| Mixed density | 1.15 | g/mL | Mixed material |
| Mix ratio, Part A:Part B | 100:56 | By weight | Volume measurement is not recommended for structural applications unless ratio-control precautions are used |
| Pot life | 2 | hours | 250 g mass at 77°F / 25°C; ASTM D2471, water bath |
| Recommended cured bondline thickness | 3–6 / 0.08–0.15 | mil / mm | Documented application range |
| Cure schedule | 220 at 200 / 93; 150 at 250 / 121; 130 at 300 / 149 | minutes at °F / °C | Alternative heat-cure schedules |
| Part A shelf life at ≤40°F / 4°C | 1 | year | Stored at or below stated temperature |
| Part A shelf life at ≤77°F / 25°C | 6 | months | Stored at or below stated temperature |
| Part A shelf life at ≤90°F / 32°C | 2 | months | Stored at or below stated temperature |
| Part B shelf life | 1 | year | At ≤40°F / 4°C, ≤77°F / 25°C, or ≤90°F / 32°C; refrigeration may cause crystallization |
After-processing / final-state properties
Typical cured-material and bonded-joint properties. Values depend on the stated cure, specimen, conditioning, substrate, and test method.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Tensile lap shear strength at −67°F / −55°C | 2,200 / 15.2 | psi / MPa | ASTM D1002; cured 1 hour at 250°F / 121°C; 2024-T3 bare aluminum, phosphoric-acid anodized per ASTM D3933 |
| Tensile lap shear strength at 77°F / 25°C | 2,600 / 17.9 | psi / MPa | ASTM D1002; same specimen preparation and cure |
| Tensile lap shear strength at 180°F / 82°C | 3,000 / 20.7 | psi / MPa | ASTM D1002; same specimen preparation and cure |
| Tensile lap shear strength at 250°F / 121°C | 3,600 / 24.8 | psi / MPa | ASTM D1002; same specimen preparation and cure |
| Tensile lap shear strength at 300°F / 149°C | 2,700 / 18.6 | psi / MPa | ASTM D1002; same specimen preparation and cure |
| Tensile lap shear strength at 350°F / 177°C | 1,700 / 11.7 | psi / MPa | ASTM D1002; same specimen preparation and cure |
| Approximate service temperature | >350 / >177 | °F / °C | Defined as temperature at which at least 1,000 psi / 6.9 MPa is retained by ASTM D1002 |
| Tensile strength | 8,200 / 56.5 | psi / MPa | ASTM D638; 0.125 in / 3.18 mm casting; tested at 77°F / 25°C |
| Tensile modulus | 418 / 2,880 | ksi / MPa | ASTM D638; 0.125 in / 3.18 mm casting; tested at 77°F / 25°C |
| Elongation at break | 2.5 | % | ASTM D638; tested at 77°F / 25°C |
| Shore D hardness | 89 | Shore D | Tested at 77°F / 25°C |
| Glass transition temperature, dry | 345 / 174 | °F / °C | Dry condition |
| Glass transition temperature, wet | 302 / 150 | °F / °C | Wet condition |
| Shear modulus, dry | 168 / 1,157 | ksi / MPa | Tested at 100°F / 38°C |
| Shear modulus after water conditioning | 160 / 1,102 | ksi / MPa | Tested at 100°F / 38°C after 24 hours in water at 200°F / 93°C |
| Dielectric constant | 4.19 | — | 1 kHz at 77°F / 25°C; ASTM D150 |
| Dissipation factor | 0.017 | — | 1 kHz at 77°F / 25°C; ASTM D150 |
| Qualification | BMS 8-301 qualified | — | Qualification stated for the exact product |
