Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Polymer Name
- Composite Materials Functions
- Technologies
Features & Benefits
- Materials Features
- Product Highlights
- Good ‘hot-wet’ properties up to 150°C
- Tough, with high impact resistance and damage tolerance
- Controlled flow matrix with low tack for ease of processing
- Effective translation of fiber properties, especially with intermediate modulus carbon fiber
- Simple cure schedule
- Excellent tack life of more than 30 days at 25°C; 40 days at 20°C
HexPly® 924 is best suited to autoclave or press cure to obtain optimum mechanical performance from the cured composite.
Applications & Uses
Properties
- Physical Form
- Cured Properties
| Value | Units | Test Method / Conditions | |
| Tensile strength at 180°C | 65 | — | ISO R527 type 1 |
| Tensile Modulus at 180°C | 3.8 | GPa | ISO R527 type 1 |
| Tensile Strain at 180°C | 2.4 | % | — |
| Poisson’s ratio at 180°C | 0.41 | — | ISO R527 type 1 |
| Calculated shear Modulus at 180°C | 1.34 | GPa | ISO R527 type 1 |
| Flexural strength at 180°C | 120 | Mpa | ISO 178 |
| Flexural Modulus at 180°C | 3.12 | GPa | ISO 178 |
| Compression strength at 180°C | 175 | Mpa | ISO 604 |
| Compression Strain at 180°C | 13 | % | ISO 604 |
| Toughness K1C at 180°C | 0.83 | Mpa | — |
| Toughness G1C at 180°C | 150 | J/m2 | — |
| Glass transition temperature (Tg) at 180°C | 190 | °C | DMTA |
| Cured Density at 180°C | 1.3 | g/cm3 | — |
| Vol. shrinkage at 180°C | 1.6 | % | — |
Technical Details & Test Data
- Curing Conditions
- 2 hours at 180°C and 700kN/m2 (7 bar) pressure.
- Heat up rate 2°C to 8°C.
- Components up to 30 mm thick can be cured without a dwell in the schedule provided that the heat-up rate is not more than 3°C/minute. There is no deterioration in performance after 3 times the recommended cure schedule (verified by interlaminar shear strength tests).
Storage & Handling
- Storage Life
- Tack Life @ 23°C 21 days
- Guaranteed Shelf Life -18°C 12 months (maximum from date of manufacture)
Storage conditions.
HexPly 924 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 preventing condensation. (A full reel in its packaging can take up to 48 hours).