Knowde Enhanced TDS
Identification & Functionality
- Composite Materials Functions
- Technologies
Features & Benefits
- Materials Features
- Key Features
• FST properties:
CS 25.853 compliant (Heat Release < 25kW/m2 )
EN 45545 compliant, rated HL3
• Cure temperature from 120°C
• Service temperature up to 170°C after post cure*
• Work life at 20°C: 21 days
• Storage life at -18°C: 12 months
• *Capable of exposure to higher temperatures
Applications & Uses
- Markets
- Composites Processing Methods
- Typical Applications
Aerospace / Rail / Flame retardant
Properties
- Typical Properties
| Value | Units | Test Method / Conditions | |
| Cure Temperature | 120 - 140 | °C | — |
| Cure Time | 1.5 - 1 | — | hrs,mins |
| Outlife | 21 | — | months |
| Tg Onset | 175 | — | — |
| Tg Peak | 240 | — | — |
| Service Temperature | 170 | °C | — |
Technical Details & Test Data
- Cure Cycles and Performances
Cure Post cure Post cure Post cure Service Temperature Tg – E’ Onset Tg – tan δ Peak 120°C 90 min - - 120°C 125°C 170°C 130°C 1 hour - - 150°C 160°C 200°C 130°C 1 hour 150°C 3 hours 170°C 175°C 240°C Recommended cures:
• Autoclave / Oven cure o 130°C for 1h, at a ramp rate of 2-3°C/min o P3 Release film recommended
• Press cure o 80°C for 15min, at a ramp rate of 2-3°C/min o 130°C for 1h, at a ramp rate of 2-3°C/min o Cool down below 90°C before opening the press
The cures given are as a guide only, and will be subject to changes in part geometry and construction.
Safety & Health
- Health And Safety
The following precautions must be taken when using PFA resin prepregs:
• Impervious gloves are recommended.
• To avoid exotherm, particular care must be taken with thick laminates.
• Ramp rates must not exceed 3.0°C/min during initial cure and 1.0°C/min during post cure.
Packaging & Availability
- Packaging Type
Storage & Handling
- Storage and Out Life
This material should be kept frozen at -18°C for a maximum storage life. If kept refrigerated at 6°C storage life will be reduced to 2 months. It must be kept sealed in a polythene bag which must not be opened until fully thawed to room temperature. If the material is not fully used, then the material must be resealed in the polythene bag to prevent moisture absorption.