Industrial & Engineering Chemistry Research,
Год журнала:
2024,
Номер
63(25), С. 11030 - 11043
Опубликована: Июнь 11, 2024
Polymer-based
shielding
materials
have
garnered
attention
due
to
their
lightweightness,
ease
of
fabrication,
and
tailorable
performance.
However,
they
tend
creep
deform
when
the
are
exposed
external
heat,
which
may
cause
a
catastrophic
disaster
mechanical
failure.
In
this
study,
hybrid
loading
graphite
(Gt)
boron
nitride
(BN)
fillers
was
used
improve
thermal
dissipation,
neutron
shielding,
tribological
properties
ultrahigh
molecular
weight
polyethylene
(UHMWPE),
demonstrate
potential
applications
in
nuclear
sectors
among
others.
The
results
revealed
that
conductivity
UHMWPE/BN
30
wt
%/Gt
40
%
composite
(i.e.,
BN30Gt40)
reached
as
high
8.43
W/mK,
295%
higher
than
%,
201%
UHMWPE/Gt
1700%
pure
UHMWPE,
respectively.
Simulation
analysis
using
Geant4
suggested
UHMWPE/BN/Gt
composites
exhibited
excellent
neutron-shielding
performance
presence
abundant
hydrogen
elements.
addition,
demonstrated
friction
wear
combined
effects
constructing
transfer
film
on
surface
pair
timely
removal
frictional
heat
generated
at
sliding
interface.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(17)
Опубликована: Фев. 9, 2024
The
development
of
highly
thermally
conductive
composites
that
combine
visible
light/infrared
camouflage
and
information
encryption
has
been
endowed
with
great
significance
in
facilitating
the
application
5G
communication
technology
military
fields.
This
work
uses
aramid
nanofibers
(ANF)
as
matrix,
hetero-structured
silver
nanowires@boron
nitride
nanosheets
(AgNWs@BNNS)
prepared
by
situ
growth
fillers,
which
are
combined
to
fabricate
sandwich
structured
electrically
insulating
(BNNS/ANF)-(AgNWs@BNNS)-(BNNS/ANF)
(denoted
BAB)
composite
films
"filtration
self-assembly,
air
spraying,
hot-pressing"
method.
When
mass
ratio
AgNWs@BNNS
BNNS
is
1
:
total
fraction
50
wt
%,
BAB
film
maximum
in-plane
thermal
conductivity
coefficient
(λ
Journal of Materials Research and Technology,
Год журнала:
2024,
Номер
30, С. 4053 - 4063
Опубликована: Апрель 17, 2024
In
this
comprehensive
review,
we
dive
into
the
potential
of
natural
fibre
composites,
tracing
their
historical
use
spanning
three
millennia
and
recent
incorporation
polymer
matrices.
Various
fibres,
including
flax,
hemp,
jute,
more,
have
been
explored
as
reinforcements
due
to
renewable
nature
environmental
appeal.
Moreover,
these
fibers
are
gaining
traction
in
industries
such
automotive
packaging.
Leveraging
abundant
agricultural
waste
as,
wheat
husk,
rice
straw,
hemp
commercially
viable
fibre-reinforced
composites.
A
thorough
summary
is
given
article
diverse
array
fibers,
current
research
status,
encompassing
properties,
processing
techniques,
filler
materials
on
structural
factors,
thermogravimetric
analysis,
dynamic
mechanical
performance
under
thermal
loading,
fire
retardant
behaviour,
cone
calorimetric
analysis
various
other
applications,
all
while
referencing
latest
developments
field,
exploring
a
sustainable
future
with
Furthermore,
difficulties
associated
vulnerability
humidity,
retardancy
compliance
matrices,
examined.
This
paper
summarizes
complex
field
composites
covers
several
stability-related
appearance.
Nano-Micro Letters,
Год журнала:
2024,
Номер
16(1)
Опубликована: Май 21, 2024
Skin-attachable
electronics
have
garnered
considerable
research
attention
in
health
monitoring
and
artificial
intelligence
domains,
whereas
susceptibility
to
electromagnetic
interference
(EMI),
heat
accumulation
issues,
ultraviolet
(UV)-induced
aging
problems
pose
significant
constraints
on
their
potential
applications.
Here,
an
ultra-elastic,
highly
breathable,
thermal-comfortable
epidermal
sensor
with
exceptional
UV-EMI
shielding
performance
remarkable
thermal
conductivity
is
developed
for
high-fidelity
of
multiple
human
electrophysiological
signals.
Via
filling
the
elastomeric
microfibers
thermally
conductive
boron
nitride
nanoparticles
bridging
insulating
fiber
interfaces
by
plating
Ag
(NPs),
interwoven
conducting
network
(0.72
W
m
Angewandte Chemie,
Год журнала:
2024,
Номер
136(17)
Опубликована: Фев. 9, 2024
Abstract
The
development
of
highly
thermally
conductive
composites
that
combine
visible
light/infrared
camouflage
and
information
encryption
has
been
endowed
with
great
significance
in
facilitating
the
application
5G
communication
technology
military
fields.
This
work
uses
aramid
nanofibers
(ANF)
as
matrix,
hetero‐structured
silver
nanowires@boron
nitride
nanosheets
(AgNWs@BNNS)
prepared
by
situ
growth
fillers,
which
are
combined
to
fabricate
sandwich
structured
electrically
insulating
(BNNS/ANF)‐(AgNWs@BNNS)‐(BNNS/ANF)
(denoted
BAB)
composite
films
“filtration
self‐assembly,
air
spraying,
hot‐pressing”
method.
When
mass
ratio
AgNWs@BNNS
BNNS
is
1
:
total
fraction
50
wt
%,
BAB
film
maximum
in‐plane
thermal
conductivity
coefficient
(
λ
∥
10.36
W/(m
⋅
K)),
excellent
electrical
insulation
(breakdown
strength
volume
resistivity
41.5
kV/mm
1.21×10
15
Ω
cm,
respectively)
mechanical
properties
(tensile
170.9
MPa).
%
could
efficiently
reduce
equilibrium
temperature
central
processing
unit
(CPU)
working
at
full
power,
resulting
7.0
°C
lower
than
CPU
solely
integrated
ANF
directly.
In
addition,
boasts
adaptive
dual
on
cement
roads
jungle
environments,
well
function
fast
QR
code
within
24
seconds.
Nano-Micro Letters,
Год журнала:
2025,
Номер
17(1)
Опубликована: Фев. 6, 2025
Abstract
A
series
of
divinylphenyl-acryloyl
chloride
copolymers
(PDVB-
co
-PACl)
is
synthesized
via
atom
transfer
radical
polymerization
employing
tert-butyl
acrylate
and
divinylbenzene
as
monomers.
PDVB-
-PACl
utilized
to
graft
on
the
surface
spherical
aluminum
nitride
(AlN)
prepare
functionalized
AlN
(AlN@PDVB-
-PACl).
Polymethylhydrosiloxane
(PMHS)
then
used
matrix
thermally
conductive
AlN@PDVB-
-PACl/PMHS
composites
with
fillers
through
blending
curing.
The
grafting
synchronously
enhances
hydrolysis
resistance
its
interfacial
compatibility
PMHS
matrix.
When
molecular
weight
5100
g
mol
−1
density
0.8
wt%,
containing
75
wt%
exhibit
optimal
comprehensive
performance.
thermal
conductivity
(
λ
)
composite
1.14
W
m
K
,
which
by
20%
420%
compared
simply
physically
blended
AlN/PMHS
pure
PMHS,
respectively.
Meanwhile,
display
remarkable
hydrothermal
aging
retaining
99.1%
after
soaking
in
90
°C
deionized
water
for
80
h,
whereas
decreases
sharply
93.7%.
