The Czech company TOSEDA supplies thermal conductive systems to European satellites


Between 2017 and 2022, TOSEDA developed a total of 4 types of thermally conductive materials
designed to remove unwanted heat generated by electronic units or batteries fitted to satellites.
Depending on the intended application, these new materials have been formulated as electrically
conductive and electrically non-conductive systems and are available in the form of elastomeric films
and pastes. Within the project, a high technology readiness level 7 was achieved. The newly developed
TOSEDA systems have met all flight qualification requirements. The industrial verification was carried
out in collaboration with a key satellite manufacturer, Thales Alenia Space. In April 2022, TOSEDA
audited with good result the production of these thermally conductive materials by Large Satellite

Compared to commercial reference systems, TOSEDA materials achieve significantly higher thermal
conductivity, provide much better adhesion to substrates and lower relaxation under pressure loads.
In addition, the electrically non-conductive type of thermally conductive paste does not exhibit the
undesirable phase separation that is typical of commercial systems. TOSEDA thermally conductive
materials are therefore much more effective, facilitate their application and minimize the risk of failure
or damage to the batteries and electronic units of satellites.

In the second half of 2022, Thales Alenia Space started a gradual replacement of the previously used
commercial thermally conductive paste with an electrically non-conductive type of paste developed
by TOSEDA. Thermally conductive materials developed by TOSEDA are attractive for the space industry
not only because of their unique properties, but also because of their competitive price. Other satellite
manufacturers that have expressed interest in these new materials include Britain’s Airbus,
Switzerland’s APCO Technologies and Canada’s MDA. In the field of development of special polymer
and nanocomposite materials, this is undoubtedly a huge success not only for TOSEDA, but also for the
Czech space industry.

Thanks to their unique properties, it can be assumed that the developed thermally conductive
materials will find a very wide application not only in the space industry, but also in a number of other
industries including electronics, aviation, automotive, etc.

More information can be found at:

Source: Toseda s.r.o.