Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Polymer Name
- Composite Materials Functions
- Technologies
Features & Benefits
- Materials Features
- Product Highlights
- Variable cure cycle 70°C – 130°C
- Good surface finish
- Suitable for a range of structures and processes
- Excellent shelf life
- Wide range of fiber substrates available
- Made in Australia
Applications & Uses
- Applications
- Composites End Use
- Composites Processing Methods
- Applications
EP-272 is used as a resin film layer, used with EP270 pre-pregs. EP-272 is designed to be used as a film in the construction of sandwich structures. The versatility of EP-272 and EP-270 means large complex structures as well as small basic components can be produced.
Properties
- Cured Properties
| Value | Units | Test Method / Conditions | |
| Flexural Strength at 23°C | 130 - 140 | MPa | Cured neat Formulation Cycle for 2hrs at 120°C |
| Ultimate Elongation at 23°C | 7.0 – 9.0 | % | Cured neat Formulation Cycle for 2hrs at 120°C |
| Flexural Modulus at 23°C | 3000 - 3200 | MPa | Cured neat Formulation Cycle for 2hrs at 120°C |
| Fracture Toughness K1c | 0.7 - 0.8 | MPa√m | Cured neat Formulation Cycle for 2hrs at 120°C |
| Fracture Energy G1c | 150 - 160 | J/m2 | Cured neat Formulation Cycle for 2hrs at 120°C |
| Tg (DSC, 10 K/min) | 120 - 125 | °C | Cured neat Formulation Cycle for 2hrs at 120°C |
| Interlaminar shear strength (12 layers UD e-glass (425gsm) 3.2mm thick laminate ) | 55 - 65 | Mpa | Cured neat Formulation Cycle for 2hrs at 120°C |
Technical Details & Test Data
- Curing
The versatility of GMS Composites EP-272 means a range of cure cycles, pressures and ramp up rates can be adopted all of which will depend greatly on the part being produced. Below is a guide to minimum cure cycles.
Temperature (°C) Time Tg (°C) - DSC7 70 16 hrs 85 80 8 hrs 97 90 4 hrs 105 100 2 hrs 115 110 1 hrs 118 120 30 mins 123 130 15 mins 125 - Heat ramp up rate – 2°C / min
- Pressure – 1 bar
- Gel Time
Hot plate
Temperature (°C) Time (min) 110 12-14 120 6-7 130 3-4 Values are indicative of small samples of neat resin formulation. Gel times may vary significantly in composites depending on fiber content and laminate thickness.
Storage & Handling
- Handling
Customers should ensure appropriate workplace OH&S guidelines are followed when working with this product. Appropriate measures should be taken to avoid contact with skin and eyes. Avoid inhalation of dust or fumes that may be released or created when machining, cutting or curing.
- Shelf Life
- Room temperature (23°C) > 3 weeks
- Refrigerated (-18°C) 12 months