Enhanced TDS
Knowde-enriched technical product data sheet
Identification & Functionality
- Chemical Family
- Polymer Name
- Reinforcement Material
- Composite Materials Functions
- Technologies
- Product Families
Features & Benefits
- Materials Features
- Key Features & Benefits
- Provides a combination of high-strength and ablative properties for demanding applications
- Low thermal expansion
- Good Tack and Drape properties
- Conforms to MIL-R-9299 Type B
- Product Forms
- Available on a wide variety of reinforcements, including fiberglass, graphite, and quartz
- Also available as a Molding Compound and Bias Tape
- Solution coated fabrics up to 152 cm wide
- Compatible with Autoclave or Press Molding processes
Applications & Uses
- Markets
- Applications
- Composites End Use
- Composites Processing Methods
- Applications / Qualifications
- Rocket Nozzles
- Ducting
- Secondary Structure
- Autoclave Cure Cycle
- Apply 610 mmHg vacuum (minimum) for 1 hour before beginning heat cycle
- Apply 689 KPa autoclave pressure
- Raise product temperature from RT to 121°C at 1 - 3°C/min
- Increase autoclave pressure to 276 KPa, vent vacuum at 103 – 138 KPa
- Hold product at 121 ± 3°C for 30 minutes
- Raise product temperature to 163 ± 3°C at 1 - 3°C/min
- Hold product at cure temperature for 60 – 90 minutes
- Cool to 66°C at no more than 5°C/min prior to releasing autoclave pressure
- Optional Post Cure Cycle for High-Temp Applications
- Heat Rise Rate between soak temperature: 1 – 5 °C/min
- 121°C for 2 hours
- 149°C for 1 hour
- 177°C for 1 hour
- 204°C for 1 hour
- 218°C for 1 hour
- 232°C for 2 hours
- High Silica Phenolic Autoclave Cure Cycle
- Apply 610 mmHg vacuum (minimum) for 1 hour before beginning heat cycle
- Raise product temperature from RT to 93°C at 1 - 3°C/min
- Apply autoclave pressure of 689 KPa, vent vacuum at 103 - 138 KPa
- Raise product temperature to 177°C at 1 – 3°C /min
- Hold product at 177 ± 3°C for 60 - 90 minutes
- Cool to 66°C at 5°C/min prior to releasing autoclave pressure
- Post Cure o Heat Oven to 177°C at 1 – 5°C /min and hold for 2 hours o Hold product at 204°C for 4 hours
Properties
- Physical Properties
Value Units Test Method / Conditions Fabric Area Weight 617 gsm - Prepreg Resin Content 32 - 38 % - Resin Flow (163°C, 103kPa) 10 - 25 % - Volatiles (135°C, 8 min) 2 - 8 % - Gel Time 50-200 Seconds - - Mechanical Properties
Value Units Test Method / Conditions Hardness 75 Barcol ASTM-D-2583 Per Ply Thickness 0.016 - - Specific Gravity 1.35 g/cc ASTM-D-792 Cure Cycle 163°C Autoclave - - Tensile Strength - Dry (24°C) 614 Mpa ASTM-D-638 Tensile Modulus - Dry (24°C) 59.3 GPa ASTM-D-638 Compressive Strength - Dry (24°C) 531 MPa ASTM-D-695 Compressive Modulus - Dry (24°F) 64.1 GPa ASTM-D-695 Flexural Strength - Dry (24°C) 772 MPa ASTM-D-790 Flexural Modulus - Dry (24°C) 55.8 GPa ASTM-D-790 Short Beam Shear - Dry (24°C) 33.1 MPa ASTM-D-5379
Regulatory & Compliance
- Quality Standards
Storage & Handling
- Prepreg Storage Life
- Out Life: 30 days @ 75°F
- Shelf Life: 6 months @ 0°F and 3 months @ 40°F (dry)
- **Store F-502 Silica at 0°F (dry)