- Excellent mechanical properties
- Low density
- Low thermal expansion
- Good electrical conductivity
- High fatigue resistance
Our SIGRAPREG non-crimp fabric, woven fabric, and non-woven prepregs are based on high-quality carbon-, glass- and aramid fibers.In this way, we cover the whole range from very lightweight to heavier constructions. We can tailor the prepregs perfectly to your requirements, since we are equipped with many different production and processing options for reinforcing materials.
SIGRAPREG TowPregs are pre-impregnated fiber bundles made from carbon and glass fiber tows. They not only impart excellent mechanical properties to components, they also have outstanding processing properties because of their constant width and optimized tack. Besides the fiber type and resin system, it is also possible to individually adjust resin content and TowPreg width and produce to very high consistency. In this way, together with our customers, we can develop the optimum material, even for special applications.
Our SIGRAPREG adhesive films are thin resin films, e.g. made from epoxy or phenolic resin systems. They ensure good adhesion between our prepregs and various core materials such as honeycombs, metals, and foams. The adhesive film formulations are specially matched to our prepreg resin systems to ensure optimum compatibility.
|Resin system||Resin type||Tg [°C]||Curing temperature [°C]||Storage life at 20°C [days]||Storage life at -18°C [months]||Tack1)||Impact-modified|
|E500 | E501 | E502 | E503||transparent epoxy||110||80 - 160||70||12||L/M/H||yes|
|E400 | E402||epoxy||120||80 - 140||40||12||L||no|
|E310 | E311||flame-retardant epoxy||120||80 - 160||14||6||L/M/H||yes|
|E320 | E321 | E322 | E323||epoxy||120||90 - 140||90||12||M||yes|
|E450||transparent epoxy||120||120 - 160||28||6||M||no|
|E700||flame-retardant epoxy||120||140 - 160||14||12||M||yes|
|E302||epoxy||130||70 - 140||14||12||L/M/H||no|
|E340||epoxy||140||100 - 150||90||12||L/M||no|
|E330||epoxy||145||80 - 160||28||12||L/M/H||yes|
|E420||snap-cure epoxy||150||120 - 170||28||12||M||no|
|E704||epoxy||150||140 - 160||14||12||M||yes|
|E800||epoxy||220||80 - 200||14||12||L/M/H||no|
|P320 | P321 | P322||phenolic||>200||100 - 180||180||12||M/H||no|
|P360||phenolic||-||120 - 160||7||6||L/M||-|
|P500||phenolic||-||150 - 170||28||12||L/M/H||yes|