Carbon Fiber-Reinforced PA12 for Drone Structural Brackets
A 20% short carbon fiber-reinforced polyamide 12 (PA12-CF20) compound engineered for injection-molded drone structural brackets, payload attachment points, gimbal mounting frames, and arm-to-body connectors.
Key Features
- ✓Tensile strength 200 MPa at density 1.20 g/cm³ — superior specific strength vs glass-filled PA6
- ✓Equilibrium moisture absorption 0.25% — 12× lower than PA6, dimensional stability across all climates
- ✓ESD-safe surface resistivity 10³–10⁶ Ω/sq — protects flight controller and sensor electronics
- ✓Compatible with FDM 3D printing for rapid drone bracket prototyping alongside injection molding
- ✓HDT 200°C — maintains structural integrity in high-temperature operating environments
- ✓Low density 1.20 g/cm³ maximizes payload capacity for every gram of bracket weight reduced
Specifications
| Parameter | Value |
|---|---|
| Density | 1.20 g/cm³ |
| Base polymer | Polyamide 12 (PA12) |
| Surface resistivity | 10³–10⁶ Ω/sq (ESD range) |
| Carbon fiber content | 20 wt% |
| Flexural modulus (dry) | 11,000 MPa (ISO 178) |
| Processing temperature | 230–250°C |
| Tensile strength (dry) | 200 MPa (ISO 527) |
| Charpy notched impact (23°C) | 50 kJ/m² (ISO 179) |
| Heat deflection temperature (1.82 MPa) | 200°C |
| Equilibrium moisture absorption (23°C, 50%RH) | 0.25% |
FAQ
PA12's equilibrium moisture absorption of 0.25% (50%RH, 23°C) is dramatically lower than PA6's 3%. In practical terms, a PA6 bracket changes dimensions by 0.5–1.0% between dry winter storage and humid summer operation — enough to introduce play into precision gimbal or connector interfaces. PA12 changes less than 0.05% over the same humidity range. This dimensional stability is why PA12 is specified for precision drone structural connections, payload quick-releases, and gimbal mounting frames where micron-level backlash matters. The trade-off is cost: PA12 compounds are 30–50% more expensive than PA6 equivalents.