Component Prepreg Charts
LOW-TEMPERATURE PREPREG
Low temperature curing component prepreg incorporates epoxy resin systems with a range of viscosities, pre-impregnated into high-performance fibers such as carbon, glass and kevlar. They are designed for rapid manufacturing across a wide range of composite applications.
| Resin System | Characteristics | Tg (DMTA) | Cure Range | Outlife (days) |
Typical Applications |
Datasheet |
|---|---|---|---|---|---|---|
| E643 | High end-use temperature. Fast processing times under elevated temperatures. |
Onset: 200ºC (392ºC) Peak Tan δ: 220ºC (428ºF) Following 190ºC (374ºF) post-cure |
50ºC (122ºF) to 75ºC (167ºF) |
5 | Motor racing bodywork, motorcycle exhausts. |
|
| E644 | Very good surface finish under autoclave or vac-bag. Fast curing at elevated temperatures. |
Onset: 124ºC (255ºC) Peak Tan δ: 138ºC (280ºF) Following 140ºC (284ºF) post-cure |
50ºC (122ºF) to 80ºC (176ºF) |
7 | Motorcycle exhausts, motor racing bodywork, marine applications, medical applications. |
|
| E650 | Excellent surface finish with autoclave or vac-bag. Improved handleability and good mechanical properties. | Onset: 121ºC (250°F) Peak Tan δ: 133ºC (271ºF) Following 140ºC (284ºF) post-cure |
50ºC (122ºF) to 80ºC (176ºF) |
5 | Motor racing bodywork, leisure industry, medical, commercial, automotive, wind turbines. |
|
| 8020 | Designed for excellent surface finish with reduced layup times. | Onset: 121ºC (250ºF) Peak Tan δ: 143ºC (290ºF) Following 120ºC (248ºF) post-cure |
70ºC (158ºF) to 120ºC (248ºF) |
30 | Automotive & Marine. |
|
MID-TEMPERATURE PREPREG
Designed for a wide range of structural components in motor racing, marine, aircraft fittings, sports equipment and for a wide range of engineering applications.
| Resin System | Characteristics | Tg (DMTA) | Typical Cure Schedules | Outlife (days) | Typical Applications |
Datasheet |
|---|---|---|---|---|---|---|
| E720 | Honeycomb-bondable without the need for resin film. | Onset: 110ºC (230ºF) Peak Tan δ: 121ºC (249ºF) |
1hr @ 120°C (248°F) |
30 | Motor racing, sandwich panels, mass transit structures. |
|
| E722 | Very good surface finish under autoclave or vac-bag conditions. Good Tg suitable for a variety of monolithic applications. Good handleability. |
Onset: 120ºC (248ºF) Peak Tan δ: 138ºC (280ºF) |
1hr @ 120ºC (248°F) |
30 | Motor racing chassis, structural components, monolithic laminates, medical applications. |
|
| E730 | High Tg, retaining high structural values at elevated temperatures. Good fracture toughness |
Onset: 172ºC (342ºF) Peak Tan δ: 195ºC (383ºF) Following 180ºC (356ºF) post-cure |
1hr @ 135°C (275°F) |
30 | Motor racing chassis, structural components, masts, wind turbines. |
|
CYANATE ESTER PREPREG
C640 and C740 are suited for motorsport, automotive, aerospace and industrial applications where high temperature performance is paramount. Both resin systems can be pre-impregnated into carbon, glass and aramid fibers.
| Resin System | Characteristics | Tg (DMTA) | Typical Cure Schedules | Outlife (days) | Typical Applications |
Datasheet |
|---|---|---|---|---|---|---|
| C640 | Very high end-use temperature with flexible low to medium cure. | Onset: 285°C (545°F) Peak Tan δ: 334°C (633°F) |
1hr @ 120°C (248°F) |
4 days | Motor sport exhaust systems and high temperature applications. |
|
| C740 | Very high end-use temperature. Excellent handleability and surface finish. |
DMTA Peak Tan δ 344°C (651ºF) Following 300°C (572°F) post-cure |
2 hrs @ 135°C (275°F) |
30 | Aerospace and motor sport exhaust systems and engine covers. |
|
OUT-OF-AUTOCLAVE PREPREG
With Amber's out-of-autoclave systems, components can be laminated quickly and more efficiently in a non-autoclave environment. Benefits include: excellent surface finishes, more flexibility in manufacturing, less expensive tooling and energy savings.
| System | Characteristics | Tg (DMTA) | Cure Range | Outlife (days) | Typical Applications |
Datasheet |
|---|---|---|---|---|---|---|
| 8020 Rapi-ply | Multiple layer product that significantly reduces lay-up times compared with traditional prepreg. Flexible low to medium cure schedules. |
Onset: 110ºC (230ºF) Peak Tan δ: 136ºC (276ºF) Following 30 minutes @ 120ºC (248ºF) |
70ºC (158°F) to 120 ºC (248°F) |
7 days | Structural components, automotive, marine, wind energy and many other applications. |
|
|
8020 Rapi-core | Same as above. | Onset: 111ºC (232ºF) Peak Tan δ: 125ºC (257ºF) Following 30 minutes @ 120ºC (248ºF) |
70ºC (158°F) to 120 ºC (248°F) |
7 days | Same as above. |
|
|
8020 Surface Film | Same as above. | Onset: 123ºC (253ºF) Peak Tan δ: 145ºC (293ºF) Following 30 minutes @ 120ºC (248ºF) |
70ºC (158°F) to 120 ºC (248°F) |
7 days | Same as above. |
|
FIRE RETARDANT PREPREG
With Amber's out-of-autoclave systems, components can be laminated quickly and more efficiently in a non-autoclave environment. Benefits include: excellent surface finishes, more flexibility in manufacturing, less expensive tooling and energy savings.
| System | Characteristics | Tg (DMTA) | Cure Range | Outlife (days) | Typical Applications |
Datasheet |
|---|---|---|---|---|---|---|
| 8020-FR | Flexible low to medium cure schedules, fire resistant under FAR25.853 Appendix F Part1. Excellent drape and good adhesive properties. |
Onset: 121ºC (250ºF) Peak Tan δ: 138ºC(280ºF) |
1hr @ 120°C (248°F) |
30 days | Motor sport exhaust systems and high temperature applications. |
|
| E721-FR | Fire resistant to FAR 25.853 App F test 2. Excellent adhesive properties suitable for sandwich construction. |
Onset: 120ºC (248ºC) Peak Tan δ: 138ºC (280ºF) |
1hr @ 120°C (248°F) |
30 | Motor racing, marine, aircraft interiors, rail, automotive. |
|
