Toray E731
- Chemical Family
- Epoxy & Epoxy Derivatives
Toray E731 is a toughened epoxy resin system designed to deliver enhanced resin clarity for cosmetic components within high performance automotive. The resin formulation ensures that components are free from white-spots and exhibit high clarity.
Properties
- Physical Form
- Prepreg
Product families
- Thermoset Prepregs
Other characteristics
- End Uses
Consoles, Dashboards, Door Panels, Motorsport, Tanks
- Functions
- Prepreg
- Polymer Name
- Epoxy Resins & Compounds
- Processing Methods
- Compression Molding
- Markets
- Automotive & Transportation
- Consumer Goods
- Industrial
- Exotherm
In certain circumstances, such as the production of thick section laminates, rapid heat-up rates or highly insulating masters, Toray E731 can undergo exothermic heating leading to rapid temperature rise and component degradation in extreme cases. Where this is likely, a cure incorporating an intermediate dwell of 1 hour at 90°C (194°F) is recommended in order to minimize the risk.
- Technology
- Composite Materials
- Processing Method
Following removal from refrigerated storage, allow the prepreg to reach room temperature before opening the polythene bag, to avoid moisture condensation. Typically, the thaw time for a full roll of material will be 4 to 6 hours. Cut patterns to size and lay-up the laminate in line with design instructions taking care not to distort the prepreg. If necessary, the tack of the prepreg may be increased by gentle warming with hot air. The lay-up should be vacuum debulked at regular intervals using a P3 (pin pricked) release film on the prepreg surface; vacuum of 980 mbar (29 in Hg) is applied for 20 minutes. For autoclave cures, use of a nonperforated release film on the prepreg surface trimmed to within 25–30 mm of the prepreg edge is recommended for the cure cycle and a vacuum bag should be installed using standard techniques.
- Composites End Use
- Consoles
- Dashboards
- Door Panels
- Motorsport
- Tanks
- Recommended Applications
- Sport & Recreation
- Motorsport & Formula 1
- Automotive
- Consumer Electronics
- Industrial
- Cosmetic and high clarity components
- Door panels, center console, dashboard
- Composite Materials Functions
- Prepreg
- Composites Processing Methods
- Compression Molding
Technical data
Table 1 of 2
2 rows| Characteristic | Value | Unit |
|---|---|---|
| Tg (DMTA) after 1 hr at 125°C (257°F) Onset | 140 (284) | °C (°F) |
| Tg (DMTA) after 1 hr at 125°C (257°F) Peak tan δ | 160 (320) | °C (°F) |
Table 2 of 2
1 row| Characteristic | Value | Unit |
|---|---|---|
| Density | 1.24 (77.4) | g/cm³(lbs./ft³) |
