Carbon Nanotube Additive
CAS Number: 308068-56-6
Carbon nanotube (CNT) additive is a multi-walled carbon nanotube (MWCNT) concentrate formulated for easy incorporation into coatings, polymers, and composites to impart electrical conductivity, mechanical reinforcement, and thermal enhancement. The surface-functionalized grade ensures improved dispersion stability and interfacial adhesion with polymer matrices. At loading levels of 0.5–3 wt%, CNTs form a conductive network that enables electrostatic dissipation, EMI shielding, and significant improvements in tensile strength.
Technical Specifications
| length | 5–20 µm |
| purity | MWCNT ≥95 wt% |
| appearance | Black powder or masterbatch pellets |
| outer diameter | 10–20 nm |
Applications
- Electrostatic dissipative (ESD) coatings and flooring
- EMI shielding compounds for electronics housings
- Thermally conductive encapsulants and thermal interface materials
- High-strength lightweight structural composites
- Conductive adhesives and printable electronics
Key Features
- Enables electrical percolation threshold at very low loadings (0.5–1 wt%)
- Surface-COOH functionalization available for enhanced polymer matrix compatibility
- High aspect ratio (>500) maximizes reinforcement per unit weight
- Thermal conductivity improvement up to 3× vs. unfilled polymer matrix