Toray E650
- Chemical Family
- Epoxy & Epoxy Derivatives
Toray E650 is a low temperature curing toughened resin system pre-impregnated into high performance fibers such as carbon, glass and aramid. It is designed for the production of composite structures in the leisure and sporting industries and also for a range of engineering Applicationss. Toray E650 is compatible for co-cure with Toray’s low temperature cure resin film, Toray EF44, and Toray’s low temperature cure syntactic core, Toray MicroPly™ LT64.
Properties
- Physical Form
- Prepreg
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 E650 prepreg can undergo exothermic heating leading to rapid temperature rise and component degradation in extreme cases. The risk of exotherm increases with lay-up thickness and increasing cure temperature. It is strongly recommended that trials, representative of all the relevant circumstances, are carried out by the user to allow a safe cure cycle to be specified.
- Post Cure
In Applicationss demanding maximum temperature or environmental resistance, it is essential to develop the glass transition temperature to the maximum level by a suitable post cure; Ramp from initial cure temperature to 140°C (284°F) at 20°C (36°F)/hr and hold for 4 hours minimum. This post cure will result in a Tg (peak tan δ) of approximately 133°C (271°F); Laminates may be post cured unsupported unless the size, shape, and laminate thickness would allow excessive distortion under self-weight
- Technology
- Composite Materials
- Processing Method
Following removal from refrigerated storage, to avoid moisture condensation, allow the prepreg to reach room temperature before opening the polythene bag. 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 (pinpricked) release film on the prepreg surface; vacuum of 980 mbar (29 inHg) is applied for 20 minutes. Toray E650 can be successfully molded by vacuum bag, autoclave, or matched die molding techniques.
- Composites End Use
- Medical Devices
- Motorsport
- Tanks
- HIGHLIGHTS
Low initial cure temperature 50°C to 80°C (122°F to 176°F); Medium tack level, easily laminated to mold surface; Excellent drape—complex shapes easily formed; 5-day shelf life at ambient temperature; Good quality surface finish under vacuum bag conditions; Suitable for processing by autoclave, press molding, and vacuum bag cure; Low volatile content—no solvents used during processing
- Recommended Applications
Sport & Recreation; Motorsport & Formula 1; Automotive; Energy; Medical; Consumer Electronics; Industrial; Production of composite structures in the leisure and sporting industries; Range of engineering Applicationss
- Composite Materials Functions
- Prepreg
Technical data
Table 1 of 2
2 rows| Characteristic | Value | Unit |
|---|---|---|
| Tg (DMTA) after 4 hours post cure at 140°C (284°F) Onset | 121 (250) | °C (°F) |
| Tg (DMTA) after 4 hours post cure at 140°C (284°F) Peak tan δ | 133 (271) | °C (°F) |
Table 2 of 2
1 row| Characteristic | Value | Unit |
|---|---|---|
| Density (23°C (73.4°F)) | 1.2 (74.9) | g/cm³(lbs./ft³) |
