Tech Briefs Magazine - April 2024 - 23
PAN CF PW (0/90)/Epoxy
Pyrolytic Graphite Sheet(70µm)
PAN CF PW (0/90)/Epoxy
Pyrolytic Graphite Sheet(70µm)
PAN CF PW (0/90)/Epoxy
Pyrolytic Graphite Sheet(70µm)
(b)
(e)
(c)
(f)
thickness of the material by allowing CNTdoped
resin to flow and better interlaminar
mechanical strength. Finally, the layup
of PGS and CNT-CF polymer is optimized.
Initial testing of the composite has shown
significant increases in thermal conductivity
compared to typical carbon fiber composites,
with a more than tenfold increase.
The composite also has higher thermal
conductivity than aluminum alloys, with
more than twice the thermal conductivity
of the Aluminum 6061 typically used in
the aerospace industry.
NASA is currently working on using
For the two layup configurations shown, (b,c) fabricated sample of CF epoxy/PGS 70/CF epoxy composite,
and (e,f) fabricated sample of PGS 70/CF epoxy/PGS 70 composite. (Image: NASA)
surface, but also through the thickness
of the material. This was achieved by
adding perforations that enable the additives
to spread through the composite.
The process for developing this innovative,
highly thermally conductive hybrid
carbon fiber polymer composite involves
several steps.
First, a CNT-doped polymer resin is prepared
to improve the matrix's thermal
conductivity, which is then infused into a
carbon fiber fabric. Second, PGS is treated
to enhance its mechanical interface with
the composite. Third, perforation is done
on the pyrolytic graphite sheet to improve
the thermal conductivity through the
this material for in-space applications,
such as heat exchangers or radiators for
removing carbon dioxide from the crew
cabin atmosphere. On Earth, the composite
could be used to create new radiators
or heat exchangers for use in automotive
or electronics applications.
NASA is actively seeking licensees to
commercialize this technology. Please
contact NASA's Licensing Concierge at
Agency-Patent-Licensing@mail.nasa.gov
or call at 202-358-7432 to initiate licensing
discussions. For more information,
visit https://technology.nasa.gov/patent/
LAR-TOPS-370.
Tech Briefs, April 2024
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23
https://technology.nasa.gov/patent/LAR-TOPS-370
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Tech Briefs Magazine - April 2024
Table of Contents for the Digital Edition of Tech Briefs Magazine - April 2024
Tech Briefs Magazine - April 2024 - Intro
Tech Briefs Magazine - April 2024 - Sponsor
Tech Briefs Magazine - April 2024 - Cov1
Tech Briefs Magazine - April 2024 - Cov2
Tech Briefs Magazine - April 2024 - 1
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Tech Briefs Magazine - April 2024 - 16A
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Tech Briefs Magazine - April 2024 - Cov3
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Tech Briefs Magazine - April 2024 - MD-Cov1
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