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Journal of Materials Science and Nanotechnology | Volume 3
October 07-08, 2019 | Frankfurt, Germany
Materials Science and Engineering
3
rd
International Conference on
Mater Sci Nanotechnol, Volume 3
Photo definable low D
k
, D
f
polyimide
Masao Tomikawa, Hitoshi Araki, Masaya Jukei, Hisashi Ogasawara
and
Akira Shimada
Toray Industries Inc, Japan
F
or an establishment of high-speed, large-capacity, many-
accessible with short delay communication network, 5G
technical format is eager to use higher frequency to have
wide frequency band width. In addition, millimeter radar
which is indispensable tool for the collision avoidance of the
car, will use 60 to 70GHz band. In this work, we studied the
effect of polyimide structure on D
f
and to develop low D
f
polyimides. To understand the effect of polyimide molecular
on D
f
dynamic mechanical measurement (DMA) technique
was used by different frequency measurements during -150
to 100 degree Celsius. As frequency temperature converting
law, we can estimate the wide range frequency molecular
relaxation data by those DMA data. From the frequency
dependency, low temperature molecular relaxation might
affect the high frequency D
f
value. From those observation,
we designed novel polyimide 2.9 of D
k
and 0.001 of D
f
at
20GHz by decreasing molecular motion at low temperature
region. Then photosensitive polyimide having D
k
3.0 and D
f
0.004 at 20GHz was obtained.
Speaker Biography
Masao Tomikawa now is research fellow of Toray Industries Inc., Member
of The Chemical Society Japan, The Society of Polymer Science Japan,
The Society of Fiber Science and Technology Japan, American Chemical
Society, IEEE. He obtained his BS and MS. in agriculture at The University
Tokyo, Engineering Doctor's degree (Ph.D.) at Tokyo Institute Technology
and awarded from The Chemical Society Japan (2007) and The Society
of Polymer Science Japan (1991), and Japan Institute of Invention and
Innovation for unique Patent. He has many papers and patens. He is a
specialist of photo sensitive polyimide chemistry.
e:
masao.tomikawa.j4@mail.toray