Engineering material
Epoxy structural adhesive
Also known as film adhesive, paste adhesive, foaming adhesive
Epoxy-based adhesive supplied as film, paste or foaming sheet, used to bond face sheets to cores and cured parts to one another in aircraft structure. Film and foaming grades must be stored cold.
Classification
- material family
- POLYMER
- form
- BULK
How this record is known
- 2
- Settled consensus
- Cited as the accepted position of the discipline.
2 of 2 claims on this page cite at least one registered source. Counts describe how each statement is known, not how likely it is to be true.
What Lithoen records
Each claim states how it is known and cites its evidence.
EstablishedRubber-toughened epoxy film, stored cold, upper service temperature 121–177 °C.
Aerospace structural adhesives are generally supplied as thin films on release paper and stored refrigerated at −18 °C; rubber-toughened epoxy film adhesives are widely used in the aircraft industry, with an upper service temperature of 121–177 °C usually set by the degree of toughening, and the films are often supported by polyester, nylon or glass fibre scrims that help handling and control flow and bond-line thickness.
Evidence support: Supported by the cited evidence · one source
Evidence: U.S. Department of Transportation, Federal Aviation Administration, Flight Standards Service 2023 · Primary authority
EstablishedPaste: room-temperature storage, hard-to-control bond line; foaming sheet: splices honeycomb.
Epoxy paste adhesives can be stored at room temperature with a long shelf life but make bond-line thickness hard to control; foaming adhesives are thin sheets of B-staged epoxy that expand as they cure at 250 °F or 350 °F, must be stored frozen, and are used to splice honeycomb core and to bond repair plugs into existing core.
Evidence support: Supported by the cited evidence · one source
Evidence: U.S. Department of Transportation, Federal Aviation Administration, Flight Standards Service 2023 · Primary authority
Record last updated 2026-10-30. Corrections follow the published corrections policy; superseded claims are retained, never silently edited.