Epoxy Film Adhesive (120°C Cure)
Key Features
- 120°C cure compatible with standard prepreg cure cycles
- High shear strength (≥28 MPa) for structural composite bonding
- Carrier fabric controls bond line thickness uniformity
- 30-day out-life for workshop flexibility
- Suitable for co-cure with carbon and glass fiber prepregs
This supported epoxy film adhesive is a one-component, DICY-catalyzed epoxy film on a carrier fabric, curing at 120°C to produce high-strength structural bonds in composite assemblies. Film weight is 200–300 g/m². Bond line thickness is controlled by the carrier fabric weight. Tensile shear strength after cure exceeds 28 MPa on aluminum and carbon fiber composite substrates. T-peel strength exceeds 300 N/25 mm. The 120°C cure temperature is compatible with standard prepreg oven cure cycles, making this film adhesive the standard co-cure or secondary bonding adhesive for carbon and glass fiber prepreg assemblies. Stored frozen at -18°C, out-life at room temperature is 30 days. Suitable for autoclave and oven cure under vacuum bag pressure. Used in aerospace structural bonding, motorsport component assembly, wind blade spar cap bonding, and advanced composite structural repair.
Specifications
| Parameter | Value |
|---|---|
| Form | Supported film on carrier fabric |
| Storage | -18°C frozen |
| Film Weight | 200–300 g/m² |
| Cure Schedule | 120°C / 60 min |
| T-Peel Strength | ≥ 300 N/25 mm |
| Out-Life (23°C) | 30 days |
| Tensile Shear Strength | ≥ 28 MPa |
Applications
FAQ
Standard vacuum bag pressure of 0.08–0.1 MPa (one atmosphere vacuum) is recommended during oven cure. For autoclave cure, 0.3–0.6 MPa over-pressure in addition to vacuum provides the best void content and bond line quality. Minimum contact pressure during heat-up ensures the film softens and flows to wet out the substrate before gelation. Ramp temperature at 1–3°C/min to allow full film wet-out before cure commences.
Direct Contact
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