Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Polymer Name
- Composite Materials Functions
- Technologies
Features & Benefits
- Materials Features
- Product Highlights
Uncured
- Single assembly sandwich layup procedure
- Controlled flow
- Excellent tack and drape properties
Cured
- Excellent fracture toughness and strain to failure
- Self-extinguishing
- Balanced tool and bagside peels on sandwich panels
- Very high sandwich and metal bonding strengths
- Good laminate properties
Applications & Uses
- Applications
- Composites Processing Methods
Properties
- Physical Form
- Neat Resin Properties
| Value | Units | Test Method / Conditions | |
| Specific gravity | 1.286 | — | — |
| Tg (Dry) | 171 (77) | °F (°C) | — |
| Equilibrium moisture absorption | 7 | % | — |
| Linear Coefficient of Thermal Expansion | 4.75 x 10–5 (8.55 x 10–5) | in/in/°F (cm/cm/°C) | — |
| Tensile Strength | 7.2 (50) | ksi (Mpa) | — |
| Tensile Modulus | 0.42 (2.9) | Msi (Gpa) | — |
| Tensile Strain | min. 9.5 | % | — |
| Fracture Toughness, K1C | 4.05 (3.69) | ksi (Mpa) | — |
| Strain energy release rate, G1C | 34.5 (6.04) | in-lb/in2 (KJ/m2) | — |
| Gel time at 250°F (121°C) | min. 5-11 | — | — |
Packaging & Availability
- shipping
- Prepreg fabric and tape are generally shipped in sealed polyethylene bags in insulated containers packed with dry ice.
Storage & Handling
- Storage
HexPly® F185™ prepreg should be sealed in a polyethylene bag and refrigerated, preferably below 32°F (0°C). Following removal from refrigerated storage, allow the prepreg to reach room temperature before opening the polyethylene bag to avoid moisture condensation. Shelf life: 6 months at 0°F (–18°C), 3 months at 40°F (4°C) (maximum, from date of manufacture).
- Product Handling and Safety
- Hexcel recommends that customers observe established precautions for handling epoxy resins and fine fibrous materials. Operators working with this product should wear clean, impervious gloves to reduce the possibility of skin contact and to prevent contamination of the material. Airborne graphite as a result of sawing, grinding, etc., can present electrical shorting hazards.