High‐Performance Phase Change Films Prepared by a Strategy for Thermal Management at Interfaces and Environmental Camouflage
Small,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 26, 2025
With
the
development
of
electronic
equipment
and
advancement
environmental
camouflage
technology,
higher
requirements
are
placed
on
flexibility,
thermal
conductivity,
heat
storage
capacity
phase
change
films.
This
work
fabricated
a
high-performance
dual-encapsulation
composite
film
through
employment
Pickering
emulsion
polymerization
sol-gel
techniques,
incorporating
n-octadecane
(n-OD),
liquid
metal
gallium
(Ga),
poly(p-phenylene
benzobisoxazole)
(PBO).
Phase
microcapsules
(PM)
serve
to
prevent
leakage
during
changes,
maintain
high
levels
enthalpy,
enhance
dispersion
n-OD
in
matrices,
as
well
improve
adhesion
at
interfaces.
It
is
possible
achieve
excellent
conductivity
with
only
small
amount
modified
Ga
(MGa)
by
chitosan
quaternary
ammonium
salt
confined
network
since
material
has
smaller
size
more
uniform
distribution.
Owing
its
distinctive
structural
design
modification
strategy,
(MGa/PM/PBO)
manifests
outstanding
mechanical
properties
(featuring
tensile
strength
7.0
MPa),
remarkable
(9.4752
W
m-1
K-1)
in-plane),
(100.9
J
g-1).
harbors
significant
potential
for
application
management
devices
camouflage.
Язык: Английский
Aramid nanofiber based flexible composite phase change films with different energy response: Structure, performances and energy conversion mechanism
Applied Thermal Engineering,
Год журнала:
2025,
Номер
unknown, С. 126370 - 126370
Опубликована: Март 1, 2025
Язык: Английский
Mechanically Robust and Environmentally Stable Solid–Solid Phase Change Materials via Thiolactone Strategy for Versatile Applications
Small,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 15, 2025
Abstract
Solid–solid
phase
change
materials
(SSPCMs)
have
received
great
interest
due
to
their
exceptional
thermal
management
and
superior
shape
stability.
However,
traditional
crosslinked
structures
predominantly
rely
on
ester
groups,
which
limits
applicability
under
extreme
conditions
such
as
high
humidity.
Herein,
a
novel
strategy
is
presented
for
preparing
SSPCMs
with
excellent
latent
heat
environmental
robustness
via
thiolactone
ring‐opening
reactions.
Easily
synthesized
copolymers
provide
abundant
reactive
sites
are
then
functionalized
alkyl
amines
acrylates
grafted
components.
A
small
amount
of
polyetheramine
employed
crosslink
the
copolymer,
forming
robust
network.
The
resulting
exhibit
tunable
transition
temperatures
(44.7–61.0
°C)
enthalpies
(20.3–98.9
J
g
−1
).
Owing
density
can
maintain
stability
mechanical
properties,
when
immersed
in
water,
acid,
alkaline
2
h.
In
addition,
films
demonstrate
reversible
information
encryption,
memory
infrared
stealth
properties.
When
integrated
polydopamine
nanoparticles,
these
also
solar‐thermal
stores/releases
capacity.
Collectively,
unique
features
new
insights
ideas
development
next
generation
smart
materials.
Язык: Английский
Phase Change Materials for Next-Generation Defense Applications
IGI Global eBooks,
Год журнала:
2025,
Номер
unknown, С. 297 - 314
Опубликована: Июнь 4, 2025
Phase
Change
Materials
(PCMs)
provide
an
innovative
solution
for
heat
regulation,
storage
of
energy,
and
adaptive
concealment
in
advanced
defence
applications.
facilitate
effective
thermal
control
military
equipment,
wearable
systems,
infrastructure
by
taking
releasing
latent
during
phase
transitions,
hence
improving
operational
reliability
troop
comfort
harsh
conditions.
Furthermore,
change
materials
enhance
stealth
technologies
regulating
surface
temperatures,
diminishing
infrared
fingerprints,
facilitating
camouflage.
This
study
examines
recent
breakthroughs
PCM
technology,
integration
techniques
problems
related
to
durability,
scalability,
real-time
responsiveness,
emphasising
their
potential
substantially
improve
mission
capability
survivability
contemporary
conflict.
Язык: Английский