Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Polymer Name
- Composite Materials Functions
- Technologies
Features & Benefits
- Labeling Claims
- Materials Features
- Product Highlights
- 120 °C (250 °F) cure
- Self-extinguishing to ABD0031 requirements
- Self-adhesive on honeycomb and foam
- Environmentally friendly
- Controlled flow matrix
- Low pressure molding capability 0.8-3 bar (12-43 Psi)
- Cure cycle versatility 100-150 °C (212-302 °F)
- Good impact resistance
- Compatible with HexPly® M25 phenolic resin system
- Two grades available:
- M26, reduced tack grade, for flat panels applications,
- M26T, improved tack grade, for other sandwich structures.
Applications & Uses
Properties
- Physical Form
- Mechanical Properties
- Typical Properties
- Cured Properties
| Value | Units | Test Method / Conditions | |
| Warp tensile strength Room Temp.°C | 790 | MPa | — |
| Warp tensile Modulus Room Temp.°C | 65 | GPa | — |
| Warp tensile strength at 80°C | 780 | MPa | — |
| Warp tensile Modulus at 80°C | 64 | GPa | — |
| Warp flexural strength Room Temp.°C | 900 | MPa | — |
| Warp flexural Modulus Room Temp.°C | 58 | GPa | — |
| Warp flexural strength at 80°C | 580 | MPa | — |
| Warp flexural Modulus at 80°C | 51 | GPa | — |
| Warp compression strength Room Temp.°C | 700 | MPa | — |
| Warp compression Modulus Room Temp.°C | 62 | GPa | — |
| Warp ILSS at -55°C | 92 | MPa | — |
| Warp ILSS Room Temp.°C | 71 | MPa | — |
| Warp ILSS at 80°C | 45 | MPa | — |
| Drum peel mN/m Room Temp.°C | 55 | — | — |
| Fibre volume Content | 55 | % | — |
| Value | Units | Test Method / Conditions | |
| Flame time | 0 | sec | — |
| Glow time | 1.3 | sec | — |
| Drip flame time | 0 | sec | — |
| Burn length | 5.3 | cm | — |
| Flaming mode | 75 | Ds | — |
| CO | 103 | ppm | — |
| Hcl | 0 | ppm | — |
| H2S - SO2 | 0 | ppm | — |
| HCN | 2.3 | ppm | — |
| HF | 0 | ppm | — |
| NO + NO2 | 11.7 | ppm | — |
| Value | Units | Test Method / Conditions | |
| Glass transition temperature- (Dry) at 180°C (350°F) | 105 (221) | °C (°F) | DMA |
| Glass transition temperature - (Wet) (saturation at 70 °C/85%/RH) at 180°C (350°F) | 90 (194) | °C (°F) | — |
| Cured Density at 180°C (350°F) | 1.29 | g/cm3 | — |
| Enthaply ΔH at 180°C (350°F) | 270 | J/g | DSC |
Technical Details & Test Data
- Curing Conditions
- The ideal cure cycle is 90 min at 125 °C (257 °F), at a pressure between 0.5 and 3 bar (7-43 Psi).
- Alternative cure cycles can be used.
- Heat up rate 0.5-10 °C (33-50 °F)/min
- Low temperature cure: 5 hours at 100 °C (212 °F) - Tg = 95 °C (203 °F)
- + post cure 1 hour at 150 °C (302 °F) to achieve a Tg of 120 °C (250 °F)
Storage & Handling
- Storage Life
- Tack Life @ 23 °C (73 °F) 30 days
- Guaranteed Shelf Life @ -18 °C (0 °F) 12 months (maximum, from date of manufacture)
- Storage
HexPly® M26-M26T 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).