Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Polymer Name
- Composite Materials Functions
- Technologies
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
- Mechanical 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 | — |
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.