Enhanced TDS
Knowde-enriched technical product data sheet
Identification & Functionality
- Chemical Family
- Polymer Name
- Composite Materials Functions
- Technologies
- Product Families
Features & Benefits
- Materials Features
- Product Highlights
- Highly toughened resin system
- Excellent retention of properties at elevated temperature
- Tg above > 200°C (392°F) after 180°C (356°F) cure
- Excellent mechanical properties
- Controlled flow
Applications & Uses
- Markets
- Applications
- Composites End Use
- Composites Processing Methods
- Recommended Applications
- Motorsport & Formula 1
- Industrial
- High temperature automotive
- 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; 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 technique
Properties
- Physical Form
- Thermal Properties
Value Units Test Method / Conditions Tg (DMTA) after 2 hr at 180°C (356°F) Onset 204 (399) °C (°F) - Tg (DMTA) after 2 hr at 180°C (356°F) Peak tan δ 216 (421) °C (°F) - - Typical Properties
Value Units Test Method / Conditions Density 1.21 (75.5) 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 E760 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.
- Post Cure
After the initial cure, a post cure up to 200°C may be required to maximize the end use temperature as follows:
- Ramp temperature at 2°C/min (3.6°F/min) to 200°C (302°F)
- Hold at 200°C (392°F) for 2 hours
- Cool oven to 60°C (140°F) at 3°C/min (5.4°F/min)
Safety & Health
- Product Safety And Shelf Life
Product Safety:
Observe established precautions for handling epoxy resins and fibrous materials—wear gloves.
Shelf Life:
- Out Life: 21 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.
To avoid moisture condensation 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.