Journal of Applied Polymer Science,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 18, 2025
ABSTRACT
Overheating
of
electronic
devices
reduces
lifespan
and
increases
safety
risks.
The
use
graphite
films
with
high
thermal
conductivity
to
enhance
dissipation
in
equipment
is
significant
importance.
This
study
used
urea‐choline
chloride
(UCC)
modify
polyimide
(PI)
from
two
different
monomer
systems,
which
were
then
graphitized
prepare
a
novel
film
conductivity.
direct
formation
hydrogen
bonds
between
poly(amic
acid)
(PAA)
UCC
facilitates
the
ordered
structure
during
imidization,
enhancing
graphitization
degree
thermodynamic
properties
PI
films.
results
indicate
that
increased
30%
over
59%
4,4′‐oxydianiline‐pyromellitic
dianhydride
(OPU)
system
80%
92%
4,4′‐diaminobenzoyltiphenylamine‐3,3′,4,4′‐biphenyl
tetracarboxylic
(DBU)
system.
Notably,
dianhydride‐3.5
wt%
(OPU35)
(DBU35)
exhibited
highest
their
respective
coefficients
45
742
W/m
K,
representing
200%
47.8%
improvements
pure
PI‐based
provides
new
material
for
heat
devices.
Small,
Journal Year:
2024,
Volume and Issue:
20(46)
Published: Aug. 7, 2024
Abstract
With
the
rapid
development
of
electronic
industry,
it's
pressing
to
develop
multifunctional
electromagnetic
interference
(EMI)
shielding
materials
ensure
stable
operation
devices.
Herein,
multilayered
flexible
PEG@PAN/MXene
(Ti
3
C
2
T
x
)/PVDF@SiO
(PMF)
composite
film
has
been
constructed
from
level
microstructure
design
via
coaxial
electrospinning,
coating
spraying,
and
uniaxial
electrospinning
strategies.
Benefiting
effective
encapsulation
for
PEG
high
conductivity
MXene
coating,
with
loading
density
0.70
mg
cm
−2
exhibits
thermal
energy
storage
120.77
J
g
−1
great
EMI
performance
(EMI
SE
34.409
dB
SSE
49.086
)
in
X‐band
(8–12
GHz).
Therefore,
this
advanced
can
not
only
help
devices
prevent
influence
pollution
but
also
play
an
important
role
device
management.
Additionally,
deposition
nano
PVDF@SiO
fibers
(289
±
128
nm)
endowed
PMF
hydrophobic
properties
(water
contact
angle
126.5°)
working
hydrophilic
thereby
breaks
limitation
humid
application
environments.
The
finding
paves
a
new
way
novel
films
Soft Science,
Journal Year:
2025,
Volume and Issue:
5(1)
Published: Jan. 22, 2025
With
the
continuous
development
of
small
and
medium-sized
electronic
devices,
which
bring
convenience
to
people’s
lives,
electromagnetic
wave
(EMW)
pollution
has
emerged
as
a
significant
issue.
The
materials
with
interference
(EMI)
shielding
capabilities
for
protection
against
harmful
radiation
plays
vital
role.
Currently,
wide
range
multifunctional,
lightweight
EMI
have
been
created
address
various
environmental
requirements.
However,
single
material
difficult
meet
requirements
high-speed
transmission
equipment
because
when
such
devices
operate
at
high
speeds,
they
typically
generate
elevated
temperatures,
excessive
further
exacerbates
heat
accumulation,
reducing
both
efficiency
lifespan.
Therefore,
thermal
management
is
essential
lower
operating
temperatures
ensure
optimal
performance.
Phase
change
(PCMs)
are
known
storing
large
amount
energy,
potential
in
management,
so
flexible
phase
composites
(PCCs)
emerged.
This
review
provides
detailed
examination
based
on
fillers,
PCMs
latest
advancements
developing
new
PCCs.
Finally,
we
suggest
some
research
directions
PCCs,
hoping
contribute
rapid
advancement
next-generation
electronics,
human
artificial
intelligence.
