Gen 2 Hy-Bor®
Gen 2 Hy-Bor® is a next generation hybrid composite material that uses Toray’s T1100G intermediate modulus carbon fiber, 4 mil Boron fiber (208 FPI), and various resin systems depending on the end application.
Benefits of Gen2 Hy-Bor®
·Approximately 40% by volume boron in a
Hy-Bor® product provides the compression strength of boron fiber (> 400 ksi)
·Boron fiber increases compression related properties of all carbon fiber composites
·Fiber volumes as high as 70% can be achieved with Hy-Bor® because of the nesting of the carbon fiber within the boron layers
Gen 2 Hy-Bor® with Higher Temperature Resins
•General rule of thumb is dry Tg should be 50°F higher than upper use temperature (This is for composites that see humidity in service since humidity causes polymer plasticization which decreases Tg whereas stiffness decreases rapidly at Tg)
•Oxygen versus no oxygen environment needs to be considered because all polymers can oxidize (Mach 2.4 plane with flight life of 120,000 hours with skin temperatures of 350°F needed to use Polyimides because BMIs, Epoxies and Cyanate Esters did not exhibit thermo-oxidative stability)
•Short duration applications like missiles at very highs temperature may be acceptable with thermal protection system
Gen 2 Hy-Bor® Properties Compared to Traditional Carbon Only Composites
| Property | Units | Hy-Bor® Composites | 4.0 mil Boron | 208 FPI | Carbon Composites | ||||
|---|---|---|---|---|---|---|---|---|---|
| Carbon Fiber Type | - | T1100G | T1100G | T1100G | T1100G | IM7 | IM7 | M46J | T300 |
| Resin System | - | TC380 (toughened epoxy, enhanced hot/wet properties) | TC-350-1 (toughened epoxy) | TC420 (cyanate ester) | RS-8HT | TC380 (toughened epoxy, enhanced hot/wet properties) | TC-350-1 (toughened epoxy) | TC420 (cyanate ester) | RS-8HT |
| 500 °F post cure | (bismaleimide) | 500 °F post cure | (bismaleimide) 550 °F post Cure | ||||||
| Dry Tg(DMA) | °C | 201 | 314 | 348 | 314 | 201 | 191 | 348 | 314 |
| °F | 394 | 597 | 658 | 597 | 394 | 376 | 658 | 597 | |
| Test Temperature | °C | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 |
| °F | 68 | 68 | 68 | 68 | 68 | 68 | 68 | 68 | |
| Compression Strength | Mpa | 2552 | 3241 | 2897 | 2828 | 1497 | 1731 | 641 | 1269 |
| Ksi | 370 | 470 | 420 | 410 | 217 | 251 | 93 | 184 | |
| Compression Modulus | Gpa | 214 | 248 | 228 | 248 | 143 | 153 | 226 | 126 |
| Msi | 31 | 36 | 33 | 36 | 20.7 | 22.2 | 32.8 | 18.3 | |
| Quasi-Open Hole Compressive Strength | Mpa | 738 | 745 | 545 | 614 | 312 | 323 | 202 | - |
| Ksi | 107 | 108 | 79 | 89 | 45.3 | 46.8 | 29.3 | - | |
| Quasi-Compression After Impact Strength | Mpa | 428 | 283 | - | - | 290 | 221 | - | - |
| Ksi | 62 | 41 | - | - | 42.1 | 32 | - | - |