SIGRATHERM® Water Based Graphite Dispersions Grade A



Dispersions based on expanded graphite powders and graphite nanoplates.

Expanded graphite nanoplates consist of small, 1-15 nanometer thick, single or multilayer graphite layers, with diameters up to 100 micrometers. They constitute a new class of graphite nanoparticles with multifunctional properties. In order to obtain a graphite dispersion, small graphite particles and nanoplates produced by secondary treatment of our expanded graphite are mixed with a dispersant in water. Depending on the application, the viscosity of the dispersion can be adjusted by means of different concentrations of solids. The maximum dispersible solid content is 5.5% by weight.

Key characteristics of our graphite nanoplates are:

  • Excellent layer formation on a variety of substrates, e.g. copper foil or PET film
  • The high aspect ratio of the graphite nanoplates allows high electrical and thermal conductivity
  • Freestanding graphite foils with a thickness between 5 and 15 μm can be produced



Ash content cash

0.01 % at 20 °C

liquid form, DIN 51903 (max)

Particle size D50 D50

200 μm

liquid form

Specific surface area Asurf,specific

25 m²/g

solid form

Viscosity η‎

0.42 Pa·s at 20 °C

liquid form

Chemical properties


Weight %



5.5 %

liquid form


0.5 %

solid form (max)


0.1 %

solid form (max)

Technological properties


Ratio of dispersion agent <1% (in water).

This material data has been provided by SGL Carbon.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.