Nano-Micro Letters,
Journal Year:
2025,
Volume and Issue:
17(1)
Published: Feb. 26, 2025
Abstract
To
adapt
to
the
trend
of
increasing
miniaturization
and
high
integration
microelectronic
equipments,
there
is
a
demand
for
multifunctional
thermally
conductive
(TC)
polymeric
films
combining
excellent
flame
retardancy
low
dielectric
constant
(
ε
).
date,
have
been
few
successes
that
achieve
such
performance
portfolio
in
polymer
due
their
different
even
mutually
exclusive
governing
mechanisms.
Herein,
we
propose
trinity
strategy
creating
rationally
engineered
heterostructure
nanoadditive
(FG@CuP@ZTC)
by
situ
self-assembly
immobilization
copper-phenyl
phosphonate
(CuP)
zinc-3,
5-diamino-1,2,4-triazole
complex
(ZTC)
onto
fluorinated
graphene
(FG)
surface.
Benefiting
from
synergistic
effects
FG,
CuP,
ZTC
bionic
lay-by-lay
(LBL)
strategy,
as-fabricated
waterborne
polyurethane
(WPU)
nanocomposite
film
with
30
wt%
FG@CuP@ZTC
exhibits
55.6%
improvement
limiting
oxygen
index
(LOI),
66.0%
40.5%
reductions
peak
heat
release
rate
total
release,
respectively,
93.3%
increase
tensile
strength
relative
pure
WPU
between
ZTC.
Moreover,
presents
thermal
conductivity
λ
)
12.7
W
m
−1
K
2.92
at
10
6
Hz.
This
work
provides
commercially
viable
rational
design
develop
high-performance
films,
which
hold
great
potential
as
advanced
dissipators
high-power-density
microelectronics.
Nano-Micro Letters,
Journal Year:
2025,
Volume and Issue:
17(1)
Published: Feb. 17, 2025
Abstract
The
morphological
distribution
of
absorbent
in
composites
is
equally
important
with
absorbents
for
the
overall
electromagnetic
properties,
but
it
often
ignored.
Herein,
a
comprehensive
consideration
including
component
regulation,
layered
arrangement
structure,
and
gradient
concentration
was
used
to
optimize
impedance
matching
enhance
loss.
On
microscale,
incorporation
magnetic
Ni
nanoparticles
into
MXene
nanosheets
(Ni@MXene)
endows
suitable
intrinsic
permittivity
permeability.
macroscale,
Ni@MXene
increases
effective
interaction
area
waves,
inducing
multiple
reflection/scattering
effects.
this
basis,
according
analysis
absorption,
reflection,
transmission
(A–R–T)
power
coefficients
composites,
constructed
realize
at
low-concentration
surface
layer,
loss
middle
interlayer
microwave
reflection
high-concentration
bottom
layer.
Consequently,
composite
(LG5-10–15)
achieves
complete
absorption
coverage
X-band
thickness
2.00–2.20
mm
RL
min
−68.67
dB
9.85
GHz
2.05
mm,
which
199.0%,
12.6%,
50.6%
higher
than
non-layered,
descending
respectively.
Therefore,
work
confirms
importance
structure
improving
performance
broadens
design
high-performance
materials.
Nano-Micro Letters,
Journal Year:
2025,
Volume and Issue:
17(1)
Published: Feb. 26, 2025
Abstract
To
adapt
to
the
trend
of
increasing
miniaturization
and
high
integration
microelectronic
equipments,
there
is
a
demand
for
multifunctional
thermally
conductive
(TC)
polymeric
films
combining
excellent
flame
retardancy
low
dielectric
constant
(
ε
).
date,
have
been
few
successes
that
achieve
such
performance
portfolio
in
polymer
due
their
different
even
mutually
exclusive
governing
mechanisms.
Herein,
we
propose
trinity
strategy
creating
rationally
engineered
heterostructure
nanoadditive
(FG@CuP@ZTC)
by
situ
self-assembly
immobilization
copper-phenyl
phosphonate
(CuP)
zinc-3,
5-diamino-1,2,4-triazole
complex
(ZTC)
onto
fluorinated
graphene
(FG)
surface.
Benefiting
from
synergistic
effects
FG,
CuP,
ZTC
bionic
lay-by-lay
(LBL)
strategy,
as-fabricated
waterborne
polyurethane
(WPU)
nanocomposite
film
with
30
wt%
FG@CuP@ZTC
exhibits
55.6%
improvement
limiting
oxygen
index
(LOI),
66.0%
40.5%
reductions
peak
heat
release
rate
total
release,
respectively,
93.3%
increase
tensile
strength
relative
pure
WPU
between
ZTC.
Moreover,
presents
thermal
conductivity
λ
)
12.7
W
m
−1
K
2.92
at
10
6
Hz.
This
work
provides
commercially
viable
rational
design
develop
high-performance
films,
which
hold
great
potential
as
advanced
dissipators
high-power-density
microelectronics.
