Enhanced TDS
Knowde-enriched technical product data sheet
Identification & Functionality
- Chemical Family
- Polymer Name
- Composite Materials Functions
- Technologies
- Product Families
Applications & Uses
- Markets
- Applications
- Composites End Use
- Composites Processing Methods
- Applications
- Remove material from cold storage at least 20 hours prior to use to allow for stabilization at room temperature. Keep the material wrapped to prevent moisture from condensing on the adhesive. If details are cut and replaced into cold storage, shorter stabilization times may be used. Cut the material to size, remove the release paper and apply to part or mold. Remove the separator paper and join the parts together. Parts are now ready to be bonded and may be cured in a press, autoclave, or vacuum bag in an oven. Apply at least 30 psi pressure.
Properties
- Physical Properties
Value Units Test Method / Conditions Volatiles max. 1 % - Separator Release paper and poly film - - Tack Medium - - Form Modified epoxy impregnated fabric - - Resin Content 45 to 50 % by Weight - Gel Time (250°F) 10 Minutes - - Mechanical Properties
Value Units Test Method / Conditions Tensile Strength at 75°F (24°C) 72000 psi - Tensile Strength at 180°F (82°C) 69000 psi - Tensile Modulus at 75°F (24°C) 4.3 X 106 psi - Tensile Modulus at 180°F (82°C) 4.5 X 106 psi - Flexural Strength at 75°F (24°C) 114000 psi - Flexural Strength at 350°F (177°C) 42000 psi - Flexural Strength after 24 hours at 350°F (177°C) 42000 psi - Flexural Modulus at 75°F (24°C) 4.6 X 106 psi - Flexural Modulus at 180°F (82°C) 4.6 X 106 psi - Flexural Strength at 180°F (82°C) 110000 psi -
Technical Details & Test Data
- Cure Cycle
DA 4518 is designed to cure in one hour at 250°F (121°C), however this system may be cured at 250°F for one hour and a post cure of 350°F for one hour. This system may also be cure at 350°F for one hour the reason for the higher temperature is to have the higher operating temperature. The prepreg may be cured using either standard heat-up methods or by in-hot, outhot press applications. A pressure of 30 psi is recommended, however pressures of 10 to 50 psi may be used.
Storage & Handling
- Shelf Life
- 6 Months (40°F), 1 Year (0°F), 30 Days (75°F)
- Storage
Store material in a contaminate free container and store at O degrees F for extended storage. For shorter storage time requirements store at 40 degrees F, this enables quicker stabilization times.