Park Aerospace F-502 3K 8HS PAN
- Chemical Family
- Phenols & PhenolicsPolyacrylonitriles
Park’s F-502 is a MIL-R-9299 phenolic resin system suitable for impregnation on any MIL-C-9084 fabric with a compatible finish. F-502 is used in the manufacture of ablative reinforcements in rocket nozzles, as well as ducting and secondary structures.
Properties
- 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
Product families
Applications
- Interior
- Aerospace & Aviation
Product Families
- Thermoset Prepregs
Other characteristics
- End Uses
- Ducts
- Functions
- Prepreg
- Polymer Name
- Phenolic Compound
- Processing Methods
- Compression Molding, Prepreg Processing
- Reinforcement Material
- Carbon Fibers, Glass Fibers
- Carbon Fibers
- Glass Fibers
- Markets
- Automotive & Transportation
- Technology
- Composite Materials
- 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
- Quality Standards
- MIL-R-9299C
- Composites End Use
- Ducts
- Material Features
- Ablation Resistant
- Tacky
- 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
- 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)
- Benefits and Features
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
- Applications and Qualifications
- Rocket Nozzles
- Ducting
- Secondary Structure
- Composite Materials Functions
- Prepreg
- Composites Processing Methods
- Compression Molding
- Prepreg Processing
- 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
Technical data
Table 1 of 2
5 rows| Characteristic | Value | Unit |
|---|---|---|
| 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 |
Table 2 of 2
11 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| 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 |
