Anti-static agent for conductive epoxy resin with maintained durability and color

TUBALL™ graphene nanotubes in the form of TUBALL™ MATRIX concentrate is a user-friendly universal conductive additive for epoxy resin formulations. In contrast to traditional ESD additives, such as carbon black, carbon fibers, various conductive polymers and mica, graphene nanotubes guarantee permanent, stable conductivity, and preserve the original color and durability of thermoset compounds.

Color change, RAL

Thanks to their high length-to-diameter ratio, graphene nanotubes are able to form a 3D network and reach the percolation threshold even at ultra-low loadings of concentrate – only 0.1% – that minimize any of the negative impacts typical for standard anti-static masterbatches. This conductive network guarantees uniform volume and surface resistivity without any "hot spots", which are frequently faced by most conventional additives.

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.

Industry-friendly TUBALL™ MATRIX concentrate for conductivity in epoxy resins allows users:

  • To target any required level of conductivity
  • To guarantee safety with its uniform, permanent conductivity
  • To expand the color palette of the end products
  • To prevent loss of durability and to improve abrasion resistance
  • To adapt easily using standard equipment and formulation

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 108–1011 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.

Epoxy systems enhanced with graphene nanotubes have found a wide application in the transportation industry, construction and infrastructure, alternative technologies, pharmaceuticals, petrochemical, healthcare, sports equipment, electronics, and cleanrooms.

To meet the specific requirements of different epoxy systems, OCSiAl has developed a line of TUBALL™-based products. Depending on the type of binder and the presence of solvent in formulation one of the following solutions can be selected. Or contact us for any additional information.

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