Park Aerospace E-761 7781 E-Glass
- Chemical Family
- Epoxy & Epoxy Derivatives
Park’s E-761 is a versatile self-adhesive epoxy matrix for use in aerospace and commercial applications where ease of processing and cost are key considerations.
Product families
- Thermoset Prepregs
Other characteristics
- End Uses
- Radomes
- Functions
- Prepreg
- Polymer Name
- Epoxy Resins & Compounds
- Processing Methods
Compression Molding, Out of Autoclave Prepreg, Prepreg Processing
- Reinforcement Material
- Glass Fibers
- Markets
- Automotive & Transportation
- Technology
- Composite Materials
- Product Forms
Available on a wide variety of reinforcements, including fiberglass, quartz (including Astroquartz®), graphite and aramid (including Kevlar®); Solution coated fabrics up to 60 inches wide; Also available on aluminized fiberglass (TEF-7); Compatible with Autoclave, Vacuum Bag/Oven or Press Cure processes.
- Quality Standards
- FAR 25.853
- Composites End Use
- Radomes
- Material Features
- Cost Effective
- Prepreg Storage Life
- Tack Life
- 14 days @ 75°F
- Out Life
- 30 days @ 75°F
- Shelf Life
- 6 months @ 0°F
- Benefits and Features
Controlled flow for ease of processing; Self adhesive for honeycomb or foam sandwich laminates without the use of film adhesive; Flexible cure temperature range of 180°F to 250°F; Good electrical properties; Flame and fire retardant per FAR 25.853; Wet service temperatures up to 180°F
- Applications and Qualifications
Radomes; Aircraft Interiors; Secondary Aircraft Structures; Sandwich Panels; MRI Resonators; Widely specified on commercial and military aircraft programs
- Composite Materials Functions
- Prepreg
- Composites Processing Methods
- Compression Molding
- Out of Autoclave Prepreg
- Prepreg Processing
Technical data
Table 1 of 3
8 rows| Characteristic | Value | Unit |
|---|---|---|
| Fabric Area Weight | 8.95 | gsm |
| Prepreg Resin Content | 39 | % |
| Resin Flow (350°F, 100psi, 20 min) | 14 | % |
| Volatiles (350°F, 8 min) | 1.5 | % |
| Gel Time | 240 | Seconds |
| Tg (dry, by DMA) | 115°C / 240°F | — |
| Dielectric Constant | 4.2 | Dk |
| Loss Tangent | 0.013 | Df |
Table 2 of 3
51 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Per Ply Thickness | 0.009 | inches | — |
| Climbing Drum Peel (Mold Surface) | 14.7 | in-lb/3 in | ASTM-D-1781 |
| Climbing Drum Peel (Bag Surface) | 14.8 | in-lb/3 in | ASTM-D-1781 |
| Flatwise Tensile Strength (Mold Surface) | 840 | psi | — |
| Flatwise Tensile Strength (Bag Surface) | 693 / 549 | psi | — |
| Long Beam Flexure Strength (Mold Surface) | 205 | lbs | — |
| Long Beam Flexure Strength (Bag Surface) | 157 / 130 | lbs | — |
| Long Beam Flexure (Mold Surface) | 201 | P/Y lb/in | — |
| Long Beam Flexure (Bag Surface) | 152 / 124 | P/Y lb/in | — |
| Tensile Strength - Dry (65°F) | 95 | Ksi | ASTM-D-638 |
| Tensile Strength - Dry (70°F) | 72 | Ksi | ASTM-D-638 |
| Tensile Strength - Dry (160°F) | 65 | Ksi | ASTM-D-638 |
Table 3 of 3
1 row| Characteristic | Value | Unit |
|---|---|---|
| Frequency | 9.375 | GHz |
