Toray E726
- Chemical Family
- Epoxy & Epoxy Derivatives
Toray E726 is a toughened epoxy resin system with controlled flow for cures at 120°C (248°F), pre-impregnated into high performance fibers such as carbon, glass and aramid. It is designed for use within medical and industrial Applicationss and would also suit a wide range of engineering Applicationss. Toray E726 is compatible for co-cure with Toray EF72, a 120°C (248°F) cure resin film and Toray MicroPly™ SC72A syntactic core.
Properties
- Physical Form
- Prepreg
Product families
Applications
- Consumer Goods — Sports & Recreation
- Chassis & Brake
- Exterior & Body
- Interior
- Powertrain & UTH
- Equipment & Parts
- Medical Devices & Assemblies
Product Families
- Thermoset Prepregs
Other characteristics
- End Uses
- Medical Devices, Motorsport, Tanks
- Functions
- Prepreg
- Polymer Name
- Epoxy Resins & Compounds
- Processing Methods
- Out of Autoclave Prepreg, Vacuum Bagging
- Markets
- Automotive & Transportation
- Consumer Goods
- Healthcare & Pharma
- Industrial
- Exotherm
In certain circumstances, such as the production of thick section laminates rapid heat-up rates or highly insulating masters, Toray E726 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.
- Product Type
- 120°C (248°F) Cure
- Toughened Epoxy Resin System
- 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. 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 ins 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
- Medical Devices
- Motorsport
- Tanks
- Material Features
- Good Surface Appearance
- HIGHLIGHTS
Controlled flow; Excellent drapeability—complex shapes easily formed; Good surface finish; Excellent tack—easily laminates to mold surface; Low volatile content—no solvents used during processing; 60 day shelf life at ambient temperature; Autoclave, vacuum bag or press curable
- Recommended Applications
- Sport & Recreation
- Motorsport & Formula 1
- Automotive
- Medical
- Industrial
- Wide range of engineering Applicationss
- 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
- 60 days at 20°C (68°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.
Technical data
Table 1 of 2
2 rows| Characteristic | Value | Unit |
|---|---|---|
| Tg (DMTA) after 1 hr at 120°C (248°F) Onset | 105 (221) | °C (°F) |
| Tg (DMTA) after 1 hr at 120°C (248°F) Peak tan δ | 128 (262) | °C (°F) |
Table 2 of 2
1 row| Characteristic | Value | Unit |
|---|---|---|
| Density (23°C (73.4°F)) | 1.20 (74.9 | g/cm³(lbs./ft³) |
