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Park Aerospace E-720 7781 E-Glass
- Chemical Family
- Epoxy & Epoxy Derivatives
Park’s E‐720 is a modified epoxy resin system designed toexposure to high temperature. E‐720 has a proven history inmany demanding aerospace applications.
Product families
Composite Materials — Prepregs & Molding Compounds
- Thermoset Prepregs
Other characteristics
- End Uses
- Ducts, Fairings, Nacelles, Radomes
- Functions
- Prepreg
- Polymer Name
- Epoxy Resins & Compounds
- Processing Methods
- Compression Molding, Prepreg Processing
- Reinforcement Material
- Glass Fibers
- Markets
- Automotive & Transportation
- Industrial
- Technology
- Composite Materials
- Product Forms
Available on a wide variety of reinforcements including fiberglass and quartz; Solution coated fabrics up to 60 inches wide; Compatible with Autoclave or Press Molding processes
- Composites End Use
- Ducts
- Fairings
- Nacelles
- Radomes
- Benefits and Features
Excellent retention of mechanical properties after long; Term high temperature exposure; Long out‐time for easy processing; Good electrical properties
- Applications and Qualifications
- Secondary Aircraft Structures
- Radomes
- Nacelles
- Inlet Ducts
- Fairings
- Composite Materials Functions
- Prepreg
- Composites Processing Methods
- Compression Molding
- Prepreg Processing
Technical data
Table 1 of 2
18 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Tensile Strength 75°F | 60 | Ksi | — |
| Tensile Strength - Dry (350°F) | 50 | Mpa | ASTM-D-638 |
| Tensile Strength - Dry (420°F) | 45 | Mpa | ASTM-D-638 |
| Tensile Strength - Dry (500°F) | 45 | Mpa | ASTM-D-638 |
| Compressive Strength - Dry (75°F) | 60 | Ksi | — |
| Compressive Strength - Dry (350°F) | 52 | Ksi | — |
| Compressive Strength - Dry (420°F) | 52 | Ksi | — |
| Compressive Strength - Dry (500°F) | 45 | Ksi | — |
| Flexural Strength - Dry (350°F) | 60 | Ksi | — |
| Flexural Strength - Dry (420°F) | 50 | Ksi | — |
| Flexural Strength -Dry (500°F) | 30 | Ksi | — |
| Flexural Modulus - Dry (75°F) | 3.4 | Msi | — |
Table 2 of 2
10 rows| Characteristic | Value | Unit |
|---|---|---|
| Fabric Area Weight | 300 | gsm |
| Prepreg Resin Content | 33 - 37 | % |
| Resin Flow (325°F, 50 psi) | 10 - 24 | % |
| Volatiles (275°F) | max. 2 | % |
| Gel Time | 1 - 2 | minutes |
| Laminate Tg – std cure | 180 | °C |
| Laminate Tg – post cure | 230 | °C |
| Barcol Hardness | 80 | — |
| Dielectric Constant | 4.2 | Dk |
| Loss Tangent | 0.015 | Df |
