Electrically Conductive Carbon Nanotubes PA6/PA66 Masterbatch
ADCNT-PA MB is a high-performance electrically conductive masterbatch based on Polyamide 6 (PA6) / Polyamide 66 (PA66) containing 15% customized carbon nanotubes (CNTs). It is designed to provide permanent electrostatic discharge (ESD) protection and electrical conductivity.
Electrical Performance
ADCNT-PA MB achieves percolation at exceptionally low loading levels, preserving the mechanical properties of the base polymer while delivering permanent conductivity.
Masterbatch Properties
When diluted into neat PA6/PA66, the masterbatch forms a conductive CNT network that dramatically reduces electrical resistivity.
| Product Name | ADCNT-PA MB |
|---|---|
| Polymer Matrix | Polyamide (PA) |
| Conductive Additive | Customized Carbon Nanotubes |
| CNT Loading | 15% ± 1 wt% |
| Physical Form | Black Pellets |
| MFI (230°C / 2.16 kg) | Not Measurable (Very low flow) |
| Real Density | 556 g/L |
Appearance & Flow
| Target Surface Resistivity band (Ω/sq) | CNT in PA (wt%) | Required CNT‑PA MB in PA (wt%) |
| 10⁹–10¹¹ Ω/sq (Antistatic) | ~3% | ~ 20% MB |
| 10⁷–10⁹ Ω/sq (ESD) | ~5% | ~ 33% MB. |
| 10⁵–10⁷ Ω/sq (Conductive ESD) | ~7% | ~ 47% MB. |
| 10³–10⁴ Ω/sq (Highly conductive / EMI‑assist) | ~10% | ~ 67% MB |
Application Matrix
Shear & Mixing Control:
Use standard PA screws but avoid high shear and long residence time to prevent CNT breakage and loss of conductivity. Ensure uniform premixing using a tumbler mixer or gravimetric dosing system.
Handling Precautions:
Store in sealed moisture-proof packaging in a cool, dry environment. Re-dry material if exposed to moisture, minimize dust during handling, and follow CNT safety (SDS) guidelines.
Application-Based Usage:
Adjust CNT loading (typically 3–10 wt%) based on application needs such as ESD connectors, automotive components, cable ties, and EMI shielding housings.
Processing Guidelines
Proper handling and processing are critical to achieving optimal dispersion and electrical performance. The CNT network must be established uniformly throughout the polymer matrix.
Storage & Handling
- Store in cool, dry conditions away from direct sunlight and heat.
- Keep packaging sealed when not in use.
- If exposed to moisture, redry material before processing.
Drying Requiremnts
PA is moisture sensitive. Both base polymer and masterbatch should be dried to below 0.1% moisture before processing.
Processing Temperature
| Melt Temperature | 240–270°C |
| Mold Temperature | 60–90°C |