This article introduces the features, types, and applications of CNT dispersions.
What is CNT Dispersion?
CNT can be broadly divided into single-walled carbon nanotubes and multi-walled carbon nanotubes. In particular, single-walled carbon nanotubes are lightweight, but are said to have strength 20 times that of steel, thermal conductivity 10 times that of copper, and electrical conductivity 1000 times that of copper.In short, CNTs are broadly divided into metallic CNTs (metal nanotubes) and semiconducting CNTs (semiconductor nanotubes) according to their structure. In particular, it is said that the conductivity of metal nanotubes is comparable to or superior to that of copper and gold, as described above, with respect to the conductivity that can be said to be a substitute noun for CNTs. Mixing of metal nanotubes with semiconductor nanotubes results in the properties of metal nanotubes. Although the conductivity of multi-walled carbon nanotubes is not as high as that of single-walled CNTs, it has the advantage of being relatively inexpensive to produce because of its high productivity.
Carbon nanotubes are said to be difficult to disperse both in water and in organic solvents. In addition, if they are not dispersed without compromising the molecular aspect ratio (the length of the CNT tube), which is a characteristic of CNTs, electrical and thermal conductivity characteristics cannot be developed.
TOKUSHIKI selects dispersants to achieve high conductivity. In addition, since it is dispersed without using resin, it is widely compatible with various resins such as urethane, acrylic, fluorine, and polyester.
Conductivity can be adjusted by adjusting the quantity of TOKUSHIKI CNTs dispersions added.
Application and lineup of CNT Dispersion
Application：
Antistatic materials, flexible electrodes, electrodes for wearable sensors, etc.Lineup：
| Product name | Filler type | Filler content(%) | Solvent composition |
|---|---|---|---|
| 9343SW | Single-walled CNT | 0.2 | NMP |
| 9213MW | Multi-walled CNT | 3.0 | Butyl acetate |
| 9214MW | Multi-walled CNT | 3.0 | Water |
| 9326MWL | Multi-walled CNT (long) | 1.0 | Butyl acetate |
Summary
- CNTs (carbon nanotubes) are broadly divided into single-walled CNTs and multi-walled CNTs. Substances with excellent strength, thermal conductivity, and electrical conductivity.
- CNTs are generally difficult to disperse, but TOKUSHIKI offers dispersions that retain conductivity and other properties.
- TOKUSHIKI CNT dispersion have excellent compatibility, and are widely compatible with various resins such as urethanes, acrylics, fluorides, and polyesters.
