Abstract
To
reduce
electromagnetic
interference
and
noise
pollution
within
communication
base
stations
servers,
it
is
necessary
for
wave
absorption
(EWA)
materials
to
transition
from
coating
multifunctional
devices.
Up
now,
the
stable
effective
integration
of
multiple
functions
into
one
material
by
a
simple
method
has
remained
large
challenge.
Herein,
foam‐type
microwave
device
assembled
with
multicomponent
organic
matter
graphite
powder
synthesized
universal
combination
process.
Melamine
phenolic
aldehyde
amine
work
as
skeleton
cementing
compound,
respectively,
in
which
embedded
compound
interconnected
mesoscopic
3D
electric
conductive
heat
network.
Interestingly,
prepared
flexible
graphite/melamine
foam
(CMF)
delivers
great
EWA
performance,
bandwidth
9.8
GHz,
ultrathin
thickness
2.60
mm,
strong
reflection
loss
−41.7
dB.
Moreover,
CMF
possesses
porosity
flexibility,
endowing
sound
ability.
The
unique
its
EWA,
conduction,
absorption,
mechanical
robustness,
well
cost‐effective
scalable
manufacturing.
These
attributes
make
promising
widely
used
stations,
chips
protection.
ACS Applied Materials & Interfaces,
Год журнала:
2023,
Номер
15(7), С. 9685 - 9696
Опубликована: Фев. 9, 2023
An
ultralight
Ni-MOF-rGO
aerogel
which
possess
the
merits
of
not
only
broad
bandwidth
and
strong
absorption
but
also
lightweight
thin
matching
thickness
is
fabricated
through
a
hydrothermal
treatment,
freeze-drying,
annealing
procedure.
The
Ni@C
microspheres
are
dispersed
randomly
evenly
on
graphene
oxide
(GO)
nanosheets,
can
be
proved
SEM
TEM
results.
electromagnetic
parameters
composite
adjusted
by
changing
mass
ratio
MOF
GO
to
endow
material
with
both
good
impedance
superior
wave
performances.
Consequently,
resulting
shows
outstanding
microwave
performance,
achieves
(−51.19
dB)
effective
(6.32
GHz)
1.9
mm
while
filling
content
2
wt
%.
In
addition,
multiple
loss
mechanisms
illustrated,
including
conduction
loss,
dipolar
polarization,
interfacial
magnetic
resonance,
eddy
current
loss.
word,
extraordinary
performance
ascribed
synergistic
effects
unique
layered
structure
hollow
core–shell
microsphere.
This
work
demonstrates
that
excellent
promising
strategy
for
application.
Abstract
To
reduce
electromagnetic
interference
and
noise
pollution
within
communication
base
stations
servers,
it
is
necessary
for
wave
absorption
(EWA)
materials
to
transition
from
coating
multifunctional
devices.
Up
now,
the
stable
effective
integration
of
multiple
functions
into
one
material
by
a
simple
method
has
remained
large
challenge.
Herein,
foam‐type
microwave
device
assembled
with
multicomponent
organic
matter
graphite
powder
synthesized
universal
combination
process.
Melamine
phenolic
aldehyde
amine
work
as
skeleton
cementing
compound,
respectively,
in
which
embedded
compound
interconnected
mesoscopic
3D
electric
conductive
heat
network.
Interestingly,
prepared
flexible
graphite/melamine
foam
(CMF)
delivers
great
EWA
performance,
bandwidth
9.8
GHz,
ultrathin
thickness
2.60
mm,
strong
reflection
loss
−41.7
dB.
Moreover,
CMF
possesses
porosity
flexibility,
endowing
sound
ability.
The
unique
its
EWA,
conduction,
absorption,
mechanical
robustness,
well
cost‐effective
scalable
manufacturing.
These
attributes
make
promising
widely
used
stations,
chips
protection.
