ACS Applied Materials & Interfaces,
Journal Year:
2023,
Volume and Issue:
15(46), P. 54027 - 54038
Published: Nov. 8, 2023
Modern
highly
integrated
microelectronic
devices
are
unable
to
dissipate
heat
over
time,
which
greatly
affects
the
operating
efficiency
and
service
life
of
electronic
equipment.
Constructing
high-thermal-conductivity
composites
with
3D
network
structures
is
a
hot
research
topic.
In
this
article,
carbon
fiber
felt
(CFF)
was
prepared
by
airflow
netting
forming
technology
needle
punching
combined
stepped
treatment.
Then,
carbon-coated
(C@CFF)
three-dimensional
structure
constructed
in
situ
high-temperature
chemical
vapor
deposition
(CVD).
Finally,
treatment
used
improve
degree
crystallinity
C@CFF
further
enhance
its
graphitization.
The
epoxy
(EP)
were
simple
vacuum
infiltration-molding
curing.
test
results
showed
that
in-plane
thermal
conductivity
(K∥)
through-plane
(K⊥)
EP/C@CFF-2300
°C
could
reach
up
13.08
2.78
W/mK,
respectively,
where
deposited
content
11.76
vol
%.
enhancement
(TCE)
improved
6440
808%
compared
those
pure
EP
EP/CFF,
respectively.
provides
an
improvement
for
through-plane.
Infrared
imaging
excellent
management
properties
composites.
owned
AC
0.035
S/cm
at
10
kHz,
Lorentz-Drude-type
negative
permittivity
behaviors
observed
tested
frequency
region.
CFF
thermally
conductive
above
method
have
broad
application
prospect
field
advanced
electromagnetics.
Polymer Composites,
Journal Year:
2024,
Volume and Issue:
45(7), P. 6287 - 6304
Published: Feb. 10, 2024
Abstract
Two‐dimensional
hexagonal
boron
nitride
(hBN)
based
nanocomposites
exhibit
excellent
mechanical
and
thermal
properties
for
various
electronics,
automotive,
aerospace
applications.
The
present
work
gives
a
novel
approach
to
fabricating
nitride/epoxy
using
isopropanol
dimethyl
ketone
as
dispersants
in
two
different
routes
predict
characteristics
employing
deep
learning
machine
models.
Nanocomposites
were
fabricated
by
casting
techniques
with
varying
concentrations
of
hBN,
spanning
from
0.25
1
wt%,
utilizing
dispersing
solvents.
analyzed
behavior,
highlighting
notable
improvement
the
at
0.5
wt%
dispersed
hBN.
It
showcased
61%
tensile
strength,
38.41%
increase
flexural
35.80%
modulus
respectively
compared
pristine
epoxy.
Halpin
Tsai
analytical
model
showed
agreement
elastic
calculated
experimentally.
fractured
SEM
micrograph
supported
improved
dispersion
hBN
nanocomposite.
Thermal
stability
hBN/epoxy
nanocomposite
revealed
an
8°C
50%
degradation
Linear
regression,
random
forest
support
vector
neural
network
(DNN)
employed
values.
DNN
proved
better
results
showcasing
low
prediction
loss
high
R
2
values
(0.99468–0.99966).
Highlights
dispersants.
0.5%
loading
exhibited
characteristics.
was
evaluating
theoretical
modulus.
Improved
filler
optimized
combination.
Deep
higher
value
lower
loss.
Journal of Applied Polymer Science,
Journal Year:
2023,
Volume and Issue:
140(38)
Published: July 14, 2023
Abstract
Polymer
dielectrics
with
synergistically
large
dielectric
permittivity
(
ε'
)
and
breakdown
strength
E
b
but
prohibited
loss
is
of
crucial
applications
in
the
electronic
devices
power
equipment.
In
this
study,
we
aim
to
elevate
integrated
performances
molybdenum
(Mo)/polyvinylidene
fluoride
(PVDF)
by
constructing
a
semiconducting
oxide
(MoO
3
shell
insulating
polystyrene
(PS)
on
Mo
surface
through
high‐temperature
oxidation
followed
suspension
polymerization.
The
resulting
core@double‐shell
Mo@MoO
@PS
particles
were
compounded
PVDF
achieve
high
while
minimizing
loss.
results
reveal
that
@PS/PVDF
composites
indicate
simultaneously
ameliorative
along
restrained
owing
existence
MoO
double‐shell,
which
not
only
prominently
enhances
interfacial
compatibility
interactions
between
fillers
PVDF,
significantly
inhibits
conductivity
impeding
long‐distance
motion
carrier
charges.
capabilities
could
be
improved
adjusting
thickness
PS
interlayer.
Havriliak‐Negami
equation
was
used
fit
experimental
results,
showed
impact
polarization
mechanism
how
it
migration.
yet
exceptionally
low
exhibit
potential
microelectronics
electrical
industries.
Nanomaterials,
Journal Year:
2023,
Volume and Issue:
13(21), P. 2842 - 2842
Published: Oct. 26, 2023
Dielectric
capacitors
have
garnered
significant
attention
in
recent
decades
for
their
wide
range
of
uses
contemporary
electronic
and
electrical
power
systems.
The
integration
a
high
breakdown
field
polymer
matrix
with
various
types
fillers
dielectric
nanocomposites
has
attracted
from
both
academic
commercial
sectors.
energy
storage
performance
is
influenced
by
essential
factors,
such
as
the
choice
matrix,
filler
type,
morphologies,
interfacial
engineering,
composite
structure.
However,
application
limited
large
amount
content,
low
densities,
low-temperature
tolerance.
Very
recently,
utilization
two-dimensional
(2D)
materials
become
prevalent
across
several
disciplines
due
to
exceptional
thermal,
electrical,
mechanical
characteristics.
Compared
zero-dimensional
(0D)
one-dimensional
(1D)
fillers,
are
more
effective
enhancing
properties
polymer-based
composites.
present
review
provides
comprehensive
overview
2D
filler-based
composites,
encompassing
ceramics,
metal
oxides,
carbon
compounds,
MXenes,
clays,
boron
nitride,
others.
In
general
sense,
incorporation
into
nanocomposite
dielectrics
can
result
enhancement
capability,
even
at
concentrations.
current
challenges
future
perspectives
also
discussed.
Polymer Composites,
Journal Year:
2024,
Volume and Issue:
45(7), P. 5968 - 5979
Published: Jan. 28, 2024
Abstract
Epoxy
resin
is
a
widely
used
polymer
material,
while
its
low
mechanical
properties
and
thermal
stability
limit
use
in
extreme
environments
such
as
high
temperature
pressure.
In
order
to
improve
the
performance
of
EP,
this
study
assessed
enhancement
EP
by
stearic
acid‐modified
n‐CeO
2
mechanism.
Laser
particle
size
analyzers,
transmission
electron
microscopes,
other
instruments
were
characterize
.
Universal
testing
machines,
thermogravimetric
test
/EP
nanocomposites.
The
results
show
that
fatty
acids
effectively
coated
surface
,
reducing
central
from
0.248
μm
0.193
improving
dispersion
compatibility.
tensile,
flexural,
impact
strength,
maximum
decomposition
temperature,
glass
transition
(Tg)
increased
382%,
554%,
698%,
5%,
10%,
respectively
with
wt%
filler
content.
scanning
microscopy
(SEM)
images
showed
addition
induced
plastic
deformation
crack
formation
matrix,
which
enhanced
toughness
composite
material.
This
provided
effective
methods
basis
for
preparation
high‐performance
Highlights
Nano
cerium
dioxide
was
modified
using
acid.
High‐performance
nanocomposites
prepared
nanoparticles.
stiffness
epoxy
adding
Thermal
heat
resistance
improved
doping
SEM
section
can
prevent
propagation.
Polymer Composites,
Journal Year:
2024,
Volume and Issue:
45(8), P. 7574 - 7585
Published: March 4, 2024
Abstract
Barium
titanate
(BaTiO
3
,
BT)/poly
(vinylidene
fluoride,
PVDF)
composites
containing
0%–50%
of
ceramic
filler
volume
fraction
were
fabricated
by
spin‐coating
method,
and
it
was
shown
that
the
permittivity
BT/PVDF
increased
with
addition
filler.
In
order
to
enhance
interfacial
bonding
between
two
phases,
surface
modification
treatment
BT
particles
carried
out
using
different
mass
fractions
γ‐Aminopropyl‐triethoxysilane
(KH550).
The
results
indicated
dielectric
properties
modified
enhanced.
constant
composite
10
vol.%
treated
1
wt.%
KH550
is
20.3,
which
twice
as
much
pure
PVDF.
A
model
employed
COMSOL
Multiphysics
simulate
analyze
effects
particle
size,
fraction,
degree
dispersion
on
films
from
perspective
microstructural.
Calculated
show
triggers
local
electric
field
distortion,
affects
composites.
Meanwhile,
also
breakdown
resistance
material,
when
uniformly
dispersed,
reduced,
effectively
enhances
material.
Finite
element
simulation
analyzes
macroscopic
a
microstructural
point
view,
beneficial
for
further
understanding
ceramic‐polymer
Highlights
polymer
matrix
enhanced
doping
BT.
can
in
surface‐modified
improved
composite.
confirmed
effectiveness
interface
modification.
