TUBALL™ graphene nanotubes graphene nanotubes (also known as single wall carbon nanotubes) are used as a conductive filler to provide anti-static properties to vinyl-ester systems. They outperform widely used carbon black in their ability to preserve or even enhance mechanical properties of thermoset materials along with providing the required conductivity. Due to ultra-low working dosages in comparison with carbon black or carbon fiber, graphene nanotubes allow a wider color palette, leading to enhanced aesthetics of final products.
Note. This diagram provides average trends compared with other additives based on OCSiAl data. Product performance may vary depending on product type and formulation.
OCSiAl has developed the TUBALL™ MATRIX line of user-friendly concentrates for easy handling of nanotubes at a standard production facility without required changes in formulation. The anti-static masterbatch is efficient at very low loadings starting from 0.1% of the overall compound.
| Parameter | Ammonium compounds | Carbon black | TUBALL™ MATRIX |
|---|---|---|---|
| Working dosage, wt.% | 0.2–4 | 4–12 | 0.1–0.5 |
| Resistivity range, Ω/sq | 108–1011 | 105–1011 | 104–1011 |
Influence on mechanical performance |
small negative | strong negative | none |
| Influence on rheology | none | strong negative | acceptable |
| Color opportunity | possible | none | possible |
| Application via spray technology | possible | challenging | possible |
| Dust formation during production | none | high | none |
| Resistivity independent of humidity | no | yes | yes |
| Stable resistivity over time | no | yes | yes |
Results for optimized formulation based on OCSiAl data.
Key benefits of graphene nanotubes in vinyl-ester systems include:
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