Graphene nanotubes for glass fiber filled PPS compounds with maintained mechanical properties and required processability

TUBALL™ graphene nanotubes in the form of TUBALL™ MATRIX 821 beta and TUBALL™ MATRIX 808 are a versatile conductive additive that has been specifically designed to provide superior electrical conductivity to thermoplastic materials, while retaining mechanical properties and providing acceptable injectability to 30–50 wt.% glass fiber filled PPS compounds.

Benefits provided by TUBALL™ nanotubes for GF-filled PPS: 

  • Low dosage starting from 0.1 wt.% TUBALL™ graphene nanotubes to obtain conductive performance
  • Enables a new combination of GF-filled PPS properties in comparison to standard conductive agents
  • Maintains a good balance of mechanical properties
  • Keeps the MFI level within an acceptable range for 30–50 wt.% glass fiber filled compounds
  • Permanent, stable, and uniform electrical resistivity without “hot spots”
  • Stable performance reducing the number of out-of-spec parts
  • Good processability and easy handling

*Dosages may vary depending on the formulation, processing, and products.


Graphene nanotubes’ unique morphology allows them to create a dense conductive network inside thermoplastic compounds at low loading rates—starting from 0.1 wt.% in the total compound.

The use of TUBALL™ MATRIX preserves key mechanical properties and provides acceptable injectability.

Case: 2 wt.% TUBALL™ MATRIX 821 beta (0.2 wt.% TUBALL™ nanotubes) in 30 wt.% glass fiber filled PPS.

*OCSiAl internal study. Results may vary depending on the formulation, processing, and products.


TUBALL™ MATRIX can be processed with standard equipment widely used in the thermoplastics industry.

Pay close attention to the processing guidelines for TUBALL™ MATRIX

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