Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Polymer Name
- Composite Materials Functions
- Technologies
Features & Benefits
- Materials Features
- Product Highlights
- Versatile cure schedules 80°C (176°F) to 180°C (356°F)
- Excellent translation of fiber properties
- Good impact resistance
- Excellent retention of properties at 120°C (248°F)
- Controlled flow
- Good drape and tack
- 60 days out life at 18°C (64°F)
- 12 months storage life at -18°C (0°F)
Applications & Uses
- Applications
- Composites End Use
- Composites Processing Methods
- Recommended Applications
- Motorsport & Formula 1
- Automotive
- Industrial
- Structural Applicationss within Formula 1 and high performance automotive
- Applications 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; a 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.
Properties
- Physical Form
- Thermal Properties
- Typical Properties
| Value | Units | Test Method / Conditions | |
| Tg (DMTA) after 1 hr at 135°C (275°F) Onset | 148 (298.4) | °C (°F) | — |
| Tg (DMTA) after 1 hr at 135°C (275°F) Peak tan δ | 185 (365) | °C (°F) | — |
| Value | Units | Test Method / Conditions | |
| Density | 1.23 (76.8) | g/cm³(lbs./ft³) | — |
Technical Details & Test Data
- Exotherm
In certain circumstances, such as the production of thick section laminates rapid heat-up rates or highly insulating masters, Toray E750 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 is recommended in order to minimize the risk.
Storage & Handling
- Shelf Life And Handling
Out Life 60 days at 18°C (64°F) Storage Life 12 months at -18°C (0°F) Out life is the maximum time allowed at room temperature before cure.Following removal from cold storage, allow the prepreg to reach room temperature before opening the polythene bag. Typically, the thaw time for a full roll of material will be 4 to 6 hours.