Toray E732 New
- Chemical Family
- Epoxy & Epoxy Derivatives
Toray E732 is a snap cure toughened epoxy resin matrix optimized for press curing (compression molding) prepreg Applicationss. With a cure time of 4 minutes at 160°C (320°F), an onset Tg of 170°C (338°F) is achieved. At this higher temperature, medium-to-high production rates can be accomplished, with customers able to produce beyond 50,000 parts per year. Toray E732 is a versatile matrix with a range of processing options allowing a variety of automotive and industrial Applicationss to be realized.
Properties
- Physical Form
- Prepreg
Product families
Applications
- Consumer Goods — Appliances & Electronics
- Consumer Goods — Sports & Recreation
- Chassis & Brake
- Exterior & Body
- Interior
- Powertrain & UTH
- Equipment & Parts
- Renewable Energy
Product Families
- Thermoset Prepregs
Other characteristics
- End Uses
- Tanks
- Functions
- Prepreg
- Polymer Name
- Epoxy Resins & Compounds
- Processing Methods
- Out of Autoclave Prepreg, Vacuum Bagging
- 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 E732 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. Caution must be exercised in ensuring safe dwell temperatures and lay-up procedures are adhered to, especially when molding solid laminates in excess of 5 mm (0.20 in) thickness. Note that the risk of thermal runaway increases with layup thickness and cure temperature.
- Product Type
120°C (248°F) to 160°C (320°F) Cure; Compression Molding Toughened Epoxy Component Prepreg
- Technology
- Composite Materials
- Processing Method
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.
- Composites End Use
- Tanks
- Material Features
- Easier Processing
- Good Surface Appearance
- HIGHLIGHTS
Hot-in hot-out press processing; Good surface finish and esthetics; Controlled resin flow for ease of processing; Full Tg of 170°C (338°F) reached in 4 minutes at 160°C (320°F); Short cure cycles between 120°C (248°F) to 160°C (320°F); Low tack for easy lay-up
- Recommended Cure Cycle
During compression molding, the resin will flow until the gel-point. After the recommended cure time, a 2-mm (0.78 inch) thick part will have generated a Tg in excess of the cure temperature. The table below provides information regarding gel times and cure times. The absence of cool-down and heat-up rates has obvious benefits for part throughput, facilitating part fabrication efficiency.
- Recommended Applications
- Sport & Recreation
- Automotive
- Energy
- Consumer Electronics
- Industrial
- Compression molding
- Composite Materials Functions
- Prepreg
- Composites Processing Methods
- Out of Autoclave Prepreg
- Vacuum Bagging
- Product Safety and Shelf Life
- Observe established precautions for handling epoxy resins and fibrous materials—wear gloves.
- Out Life
- 21 days at 18°C (64°F)
- Frozen Storage Life
- 6 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 prepreg to reach room temperature before opening the polythene bag.
Technical data
Table 1 of 2
6 rows| Characteristic | Value | Unit |
|---|---|---|
| Tg (DMTA) after 10 mins at 140°C (293°F) Onset | 159 (318) | °C (°F) |
| Tg (DMTA) after 10 mins at 140°C (293°F) Peak tan δ | 193 (379) | °C (°F) |
| Tg (DMTA) after 4 mins at 160°C (320°F) Onset | 170 (338) | °C (°F) |
| Tg (DMTA) after 4 mins at 160°C (320°F) Peak tan δ | 190 (374) | °C (°F) |
| Tg (DMTA) after 5 mins at 150°C (302°F) Onset | 163 (325) | °C (°F) |
| Tg (DMTA) after 5 mins at 150°C (302°F) Peak tan δ | 189 (372) | °C (°F) |
Table 2 of 2
2 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Density | 1.24 (77.4) | g/cm³(lbs./ft³) | ASTM D79213 |
| Flow at 100 psi at 140°C (293°F) | 26.3 | % | ASTM D3531 M |
