Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Polymer Name
- Reinforcement Material
- Composite Materials Functions
- Technologies
Features & Benefits
- Key Features & Benefits
- Epoxy resin system optimized for use with woven aramid reinforcements
- Meets requirements of MIL-R-9300B, Type 1
- Long out-time for easy processing
- Product Forms
- Available on a wide variety of reinforcements, including Fiberglass, Quartz and Aramid (Twaron® and Kevlar®)
- Solution coated fabrics up to 60 inches wide
- Compatible with Autoclave, Vacuum Bag/Oven or Press Molding processes
Applications & Uses
- Applications
- Composites Processing Methods
- Applications / Qualifications
- Military Helicopters
- Engine Nacelles
- Work Platforms
- Doors
- Air Frames
- Autoclave Cure Cycle
- Apply 24”Hg vacuum (minimum) for 1 hour before beginning heat cycle
- Apply 60 psi autoclave pressure, vent vacuum at 15 – 20 psi
- Heat at 2 – 3 °F/min from room temperature to 230 ± 10°F
- Hold temperature for 30 minutes
- Raise product temperature at 2 – 3 °F/min to 360 ± 10°F
- Hold product at cure temperature for 120 minutes
- Cool to 150°F at 8°F/min prior to releasing autoclave pressure
Properties
- Mechanical Properties
- Physical Properties
| Value | Units | Test Method / Conditions | |
| Tensile Strength - Dry (75°F) | 54 | Ksi | — |
| Tensile Modulus - Dry (75°F) | 3 | Msi | — |
| Compressive Strength - Dry (75°F) | 60 | Ksi | — |
| Compressive Modulus - Dry (70°F ) | 3 | Msi | — |
| Flexural Modulus - Dry (75°F) | 3.6 | Msi | — |
| Flexural Modulus - Dry (75°F) | 110 | Ksi | — |
| Short Beam Shear - Dry (75°F) | 6.8 | Ksi | — |
| Value | Units | Test Method / Conditions | |
| Prepreg Resin Content | 35 - 40 | % | — |
| Resin Flow (325°F, 15 psi) | 7 - 21 | % | — |
| Volatiles (275°F, 8 min) | max. 2 | % | — |
| Gel Time | 1 -2.5 | minutes | — |
Regulatory & Compliance
- Quality Standards
Storage & Handling
- Prepreg Storage Life
Tack Life: 14 days @ 75°F
Out Life: 30 days @ 75°F
Shelf Life: 12 months @ 0°F