ACS Sustainable Chemistry & Engineering,
Journal Year:
2024,
Volume and Issue:
12(16), P. 6220 - 6231
Published: April 8, 2024
Polymer–metal
composite
materials
have
been
extensively
employed
for
thermal
management
in
the
electronic
field.
However,
their
application
is
hindered
by
limited
conductivity
and
inadequate
electrical
insulation.
In
this
study,
we
present
a
novel
strategy
to
prepare
advanced
polymer–metal
films
incorporating
cellulose
nanofibers
(CNFs)
with
orientated
polydopamine
(PDA)
modified
aluminum
(Al)
flakes,
employing
straightforward
process
involving
vacuum-assisted
filtration
hot-pressing.
The
resulting
Al@PDA/CNF
exhibited
superior
in-plane
of
22.9
W/(m·K)
resistivity
1.6
×
1016
Ω·cm,
outperforming
Al/CNF
films.
Molecular
dynamics
simulation
results
showed
that
interfacial
interaction
between
Al
CNF
was
greatly
improved
hydrogen-bonding
coated
PDA,
which
acts
as
"bridge"
promote
phonon
vibration
matching,
excellent
heat
transfer
insulation
properties.
Our
study
provides
promising
approach
preparation
high-performance
interface
(TIMs)
insulation,
demonstrating
great
potential
applications.
Advanced Composites and Hybrid Materials,
Journal Year:
2023,
Volume and Issue:
6(4)
Published: Aug. 1, 2023
Abstract
Phase
change
materials
(PCMs)
possess
remarkable
capability
to
store
and
release
substantial
amounts
of
energy
during
the
processes
melting
crystallization
across
a
wide
temperature
range,
thus
holding
great
promise
in
applications
related
regulation
thermal
storage.
Herein,
effectively
address
PCM
leakage
enhance
conduction,
microcapsules
with
melamine–formaldehyde
resin
(MF)
shell
were
prepared
using
situ
polymerization
Pickering
emulsions
stabilized
by
cellulose
nanofibrils
(CNFs).
CNFs
selected
as
stabilizers
for
reinforcing
nanofillers
MF
shell,
owing
their
excellent
emulsifying
capability,
high
mechanical
strength,
sustainable
nature.
Paraffin
wax
(PW)
was
utilized
material.
The
resulting
shells
PW
core
had
diameter
ranging
from
2
4
µm.
Results
showed
that
microcapsule
core–shell
ratio
(Micro-2.0)
exhibited
highest
latent
heat
fusion,
measuring
approximately
128.40
J/g
120.23
J/g,
respectively.
encapsulation
efficiency
Micro-2.0
determined
be
79.84%.
Nano-Micro Letters,
Journal Year:
2024,
Volume and Issue:
16(1)
Published: Feb. 2, 2024
High-performance
microwave
absorption
(MA)
materials
must
be
studied
immediately
since
electromagnetic
pollution
has
become
a
problem
that
cannot
disregarded.
A
straightforward
composite
material,
comprising
hollow
MXene
spheres
loaded
with
C-Co
frameworks,
was
prepared
to
develop
multiwalled
carbon
nanotubes
(MWCNTs).
high
impedance
and
suitable
morphology
were
guaranteed
by
the
exoskeleton,
attenuation
ability
provided
MWCNTs
endoskeleton,
material
performance
greatly
enhanced
layered
core-shell
structure.
When
thickness
only
2.04
mm,
effective
bandwidth
5.67
GHz,
minimum
reflection
loss
(RL
Polymer,
Journal Year:
2024,
Volume and Issue:
299, P. 126935 - 126935
Published: March 18, 2024
Compared
with
traditional
injection
foaming,
co-injection
foaming
serves
as
a
method
to
prepare
products
high-quality
surfaces
and
enhanced
mechanical
properties,
demonstrating
excellent
technical
advantages
economic
benefits.
The
effects
of
high-density
polyethylene
(HDPE)
content,
agent
melting
temperature
core
material,
nano-organic
montmorillonite
(OMMT)
content
on
the
cell
structure,
crystallization
behavior
isotactic
polypropylene
(iPP)/HDPE
composite
foam
prepared
by
were
systematically
studied.
At
2
wt.%,
HDPE
30
OMMT
3
material
190
°C,
exhibited
size
measuring
85
μm,
density
2.5
×
105
cells/cm3,
tensile
strength
25.8
MPa,
an
impact
12.5
kJ/m2.
addition
reduced
crystallinity
iPP
matrix,
while
enhancing
solubility
carbon
dioxide
within
matrix.
non-miscible
interface
between
helped
reduce
energy
barrier
for
nucleation.
Furthermore,
introduction
nucleating
in
iPP/HDPE
dramatically
decreased
These
synergistic
result
smaller
higher
density,
exhibiting
comprehensive
properties.
This
work
provides
feasible
preparing
performance.
