Anti-static additive for conductive vinyl ester with maintained durability and color

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.

Anti-static agents: traditional vs TUBALL™

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.

TUBALL™ MATRIX meets key technical requirements

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:

  • Uniform conductivity – guaranteed protection from "hot spots"
  • Permanent anti-static properties independent of humidity
  • Preserved mechanical properties, or even enhancement of some parameters
  • Flexibility in coloring the product thanks to ultra-low working loading of nanotubes
  • Retained density and viscosity of the original compound
  • Simple adaptation to existing production process and formulation

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Contact us to discuss your project specifications or to request a TUBALL™ MATRIX sample