Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Polymer Name
- Composite Materials Functions
- Technologies
Features & Benefits
- Product Highlights
- Cure temperature 80 – 180 °C
- Elevated temperature performance : Tg and service temperature
- Cured using a variety of processes (press, autoclave and vacuum)
- Optional post-cure
- Excellent drape and tack
Applications & Uses
Properties
- Physical Form
Technical Details & Test Data
- Curing Conditions
HexPly® M35-4 is a flexible curing system and can be cured at temperatures from 80 to 180°C, using a variety of
curing processes including autoclave, press, and vacuum bag/oven cure.
A typical autoclave cure cycle for a thin monolithic laminate is 90 minutes at 135°C.- Apply full vacuum (1 bar).
- Apply 7 bar gage autoclave pressure.
- Reduce the vacuum to a safety value of 0.2 bar when the autoclave pressure reaches approximately 1 bar gage.
- Heat-up at 1 – 3 °C/minute to 135°C ± 5°C.
- Hold at 135°C ± 5°C for 90 minutes ± 5 minutes.
- Cool at 2 – 5 °C per minute.
- Vent autoclave pressure when the component reaches 60°C or below.
Storage & Handling
- Storage Life
- Outlife @ 23°C 28 days
- Guaranteed Shelf Life @ -18°C 12 months (maximum, from date of manufacture)
Out Life: The maximum accumulated time allowed at room temperature between removal from the freezer and cure.
Shelf Life: The maximum storage life for HexPly® prepreg from date of manufacture, when stored continuously, in a closed moisture proof bag, at -18°C (0°F). To accurately establish the exact expiry date, consult the box label.
- Storage
HexPly® M35-4 prepregs should be stored as received in a cool dry place or in a refrigerator. After removal from refrigerator storage, prepreg should be allowed to reach room temperature before opening the polythene bag, thus preventling condensation. (A full reel in it’s packaging can take up to 48 hours).