ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(29), С. 38620 - 38630
Опубликована: Июль 10, 2024
Polymers
are
often
used
as
adhesives
to
improve
the
mechanical
properties
of
flexible
electromagnetic
interference
(EMI)
shielding
layered
films,
but
introduction
these
insulating
inevitably
reduces
EMI
performance.
Herein,
ultrafine
aramid
nanofibers
(UANF)
with
a
diameter
only
2.44
nm
were
binder
effectively
infiltrate
and
minimize
gaps
in
MXene
for
balancing
properties.
Combining
evaporation-induced
scalable
assembly
assisted
by
blade
coating,
large-scale
MXene/UANF
films
highly
aligned
compact
stacking
successfully
fabricated.
Compared
conventional
ANF
larger
7.05
nm,
UANF-reinforced
film
exhibits
"brick-mortar"
structure
higher
orientation
compacter
nanosheets,
thus
showing
properties,
electrical
conductivity,
By
optimizing
content,
can
achieve
optimal
tensile
strength
156.9
MPa,
toughness
2.9
MJ
m
Nano-Micro Letters,
Год журнала:
2025,
Номер
17(1)
Опубликована: Фев. 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.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 11, 2024
Abstract
The
development
of
wearable
heat
supply
textiles
in
cold
conditions
utilizing
the
photothermal
conversion
effect
is
crucial
for
advancement
thermal
management
that
do
not
require
any
power
connection
or
other
external
energy
input.
Here,
a
dual
gelation
strategy
under
gravity‐enhanced
orientation
proposed
to
construct
super‐strong
bacterial
cellulose
(BC)
aerogel
fiber
using
BC
as
matrix
material
and
hydroxylated
carbon
nanotubes
(HCNT)
material.
Under
assistance
property
network
structure
with
soft–hard
synergy,
silanized
BC/HCNT
(SBT)
has
rich
network,
tensile
strength
up
26.0
MPa,
flexibilityand
knittability.
Thanks
enhanced
backbone,
after
introduction
phase
change
eicosane
SBT
(SBTE),
SBTE
achieves
high
enthalpy
105
J
g
−1
,
low
leakage,
storage
stabilityand
tough
mechanical
properties
23.9
MPa
8.7
MJ
m
−3
while
maintaining
flexibility,
knittabilityand
hydrophobicity.
textile
woven
by
also
exhibits
long‐lasting
capacity
at
temperatures
real‐world
conditions.
Therefore,
finely
designed
potential
be
used
solar‐driven
weather.
