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Park Aerospace E-722 7781 E-Glass
- Chemical Family
- Epoxy & Epoxy Derivatives
Park’s E-722 is a modified 350°F cure epoxy system with excellent processing characteristics for vacuum bag, press, and autoclave molding.
Product families
Composite Materials — Prepregs & Molding Compounds
- Thermoset Prepregs
Other characteristics
- End Uses
- Doors, Nacelles
- Functions
- Prepreg
- Polymer Name
- Epoxy Resins & Compounds
- Processing Methods
Compression Molding, Prepreg Processing, Vacuum Bagging
- Reinforcement Material
- Glass Fibers
- Markets
- Automotive & Transportation
- Industrial
- Technology
- Composite Materials
- Product Forms
Available on a wide variety of reinforcements, including Fiberglass, Quartz and Aramid (Twaron® and Kevlar®); Solution coated fabrics up to 60 inches wide; Compatible with Autoclave, Vacuum Bag/Oven or Press Molding processes
- Quality Standards
- MIL-R-9300B Type 1
- Composites End Use
- Doors
- Nacelles
- Benefits and Features
Epoxy resin system optimized for use with woven aramid reinforcements; Meets requirements of MIL-R-9300B, Type 1; Long out-time for easy processing
- Applications and Qualifications
- Military Helicopters
- Engine Nacelles
- Work Platforms
- Doors
- Air Frames
- Composite Materials Functions
- Prepreg
- Composites Processing Methods
- Compression Molding
- Prepreg Processing
- Vacuum Bagging
Technical data
Table 1 of 2
7 rows| Characteristic | Value | Unit |
|---|---|---|
| Tensile Strength - Dry (75°F) | 54 | Ksi |
| Tensile Modulus - Dry (75°F) | 3 | Msi |
| Compressive Strength - Dry (75°F) | 60 | Ksi |
| Compressive Modulus - Dry (70°F ) | 3 | Msi |
| Flexural Modulus - Dry (75°F) | 3.6 | Msi |
| Flexural Modulus - Dry (75°F) | 110 | Ksi |
| Short Beam Shear - Dry (75°F) | 6.8 | Ksi |
Table 2 of 2
4 rows| Characteristic | Value | Unit |
|---|---|---|
| Prepreg Resin Content | 35 - 40 | % |
| Resin Flow (325°F, 15 psi) | 7 - 21 | % |
| Volatiles (275°F, 8 min) | max. 2 | % |
| Gel Time | 1 -2.5 | minutes |
