ACS Applied Electronic Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 17, 2024
With
the
rapid
advancement
of
artificial
intelligence,
smart
sensing
technologies,
and
batteries
with
high
power
density,
thermal
management
has
become
a
critical
issue
for
electronic
devices.
Phase
change
materials
(PCMs)
offer
promising
applications
in
management.
However,
it
is
significant
challenge
to
fabricate
PCMs
conductivity
(TC)
electromagnetic
interference
shielding
effectiveness
(EMI
SE)
while
maintaining
leakage-free
performance.
This
work
reports
solid–solid
phase
composites
TC
EMI
SE
enabled
by
covalent
functionalization
quasi-hyperbolic
framework.
The
material
(OP)
synthesized
via
nucleophilic
ring-opening
reaction
epoxy
groups,
where
octadecanol
(OD)
grafted
onto
side
chains
polyethylene-co-methyl
acrylate-co-glycidyl
methacrylate
(PEMAGMA).
Subsequently,
filled
into
electrochemically
expanded
graphite
(EEG)
framework
through
vacuum
filtration,
which
EEG
produced
using
an
electrochemical
expansion
method
SE.
obtained
OP/EEG
exhibited
excellent
properties,
including
very
low
leakage
(0.6%),
latent
heat
(86.45
J/g),
ultrahigh
(22.6
W/(m·K)),
superior
(110.28
dB).
shows
great
potential
improving
transfer
efficiency
interface
(TIMs)
practical
applications,
demonstrating
outlook
field
ACS Applied Nano Materials,
Год журнала:
2025,
Номер
8(4), С. 1912 - 1924
Опубликована: Янв. 21, 2025
Modern
intelligent
electronic
devices
require
electromagnetic
interference
(EMI)
shielding
composite
films
with
outstanding
effectiveness
and
multifunctionality
to
adapt
increasingly
complex
application
environments.
In
this
work,
inspired
by
the
morphology
of
cocoa
trees,
SiO2
is
conceived
as
fruit
one-dimensional
nanomaterial
silver
nanowires
(AgNWs)
branches.
Utilizing
metal
chelating
properties
polydopamine
(PDA),
SiO2@PDA@AgNWs
were
formed
subsequently
interwoven
cellulose
nanofibers
(CNFs)
create
a
nanocomposite
film
cocoa-tree-like
structure,
denoted
CNFs-AgNWs-SiO2@PDA
(C-A-SP).
Conductive
AgNWs
induce
conductivity
losses,
while
contribute
multiple
scattering
interfacial
polarization
losses.
Therefore,
C-A-SP
thickness
59
μm
demonstrates
an
impressive
EMI
(EMI
SE)
76.91
dB
exhibits
specific
SE
(SSE/t)
15304.88
dB·cm2·g–1.
Meanwhile,
thermal
conductivities
in-plane
out-plane
reached
4.15
0.15
W/(m·K),
respectively.
Additionally,
also
excellent
strain-sensing
capability.
This
study
provides
valuable
insights
for
designing
fabricating
lightweight,
flexible,
multifunctional
efficient
composites.
Polymers for Advanced Technologies,
Год журнала:
2025,
Номер
36(2)
Опубликована: Фев. 1, 2025
ABSTRACT
The
increasing
proliferation
of
electronic
devices
and
advanced
communication
networks
has
resulted
in
heightened
electromagnetic
interference
(EMI),
posing
significant
challenges
both
technological
environmental
contexts.
Traditional
EMI
shielding
materials,
such
as
metals
composite
coatings,
offer
limited
adaptability
are
unable
to
meet
the
dynamic
demands
modern
systems.
Recent
advancements
have
introduced
smart
stimuli‐responsive
materials
for
shielding,
which
provide
real‐time
tunability,
thereby
addressing
limitations
conventional
static
solutions.
These
leverage
various
mechanisms—such
compressive
tensile
strains,
phase
transitions,
shape
memory
effects,
responses
chemical
agents,
humidity,
or
crossover
angle
changes—to
dynamically
adjust
their
effectiveness
(EMI‐SE).
This
review
provides
an
in‐depth
analysis
recent
progress
technologies,
highlighting
tunable
mechanisms,
material
compositions,
applications.
Furthermore,
it
discusses
existing
potential
future
research
directions
required
advancement
this
technology.
By
enabling
environments,
present
a
promising
solution
telecommunications,
wearable
electronics,
aerospace,
defense
sectors.
Nanomaterials,
Год журнала:
2025,
Номер
15(7), С. 541 - 541
Опубликована: Апрель 2, 2025
In
this
review,
a
comprehensive
systematic
study
of
the
research
background,
developments,
classification,
trends,
and
advances
over
past
few
years
in
on
new
electromagnetic
interference
(EMI)
shielding
materials
will
be
described.
The
following
groups
for
EMI
discussed:
biochars,
scaffolds,
rare
earth,
ferrite-based
materials.
We
selected
two
novel,
organic,
lightweight
(biochars
scaffolds)
compared
their
effectiveness
to
inorganic
(ferrite
earth
materials).
This
article
broadly
discuss
performance,
basic
principles
shielding,
preparation
methods
materials,
application
prospects.
Biochars
are
promising,
eco-friendly,
sustainable,
renewable
that
can
potentially
used
as
filter
polymer
composites
along
with
scaffolds.
Scaffolds
new-generation,
easy-to-manufacture
excellent
performance.
Rare
(RE)
plays
an
important
role
developing
high-performance
wave
absorption
due
unique
electronic
shell
configurations
higher
ionic
radii
RE
elements.
Ferrite-based
often
combined
other
components
achieve
enhanced
mechanical
strength,
electrical
thermal
conductivity.
Finally,
current
challenges
future
outlook
highlighted
hope
obtaining
guidelines
development
application.
