Journal of Vinyl and Additive Technology,
Год журнала:
2024,
Номер
unknown
Опубликована: Июнь 14, 2024
Abstract
This
investigation
investigates
the
effects
and
mechanisms
of
mixed‐dimensional
palygorskite
clay
(MDPal)
on
thermal
stability,
flame
retardancy
smoke
suppression
polycarbonate/acrylonitrile‐butadiene‐styrene
(PC/ABS)
composites.
MDPal,
comprising
illite
as
its
main
mineral
components,
is
characterized
by
interwoven
morphology
presence
Fe
ions
in
octahedral
framework,
making
it
highly
promising
for
enhancing
fire
safety
flammable
The
incorporation
MDPal
at
a
10
wt%
dosage
leads
to
significant
improvements
PC/ABS
composites,
including
reduction
29.8%
peak
heat
release
rate,
9.9%
total
release,
34.5%
production
rate
15.7%
compared
pure
PC/ABS.
Besides,
there
notable
increase
31.5%
tensile
strength
80.4%
elongation
break
when
content
5
wt%.
research
offers
valuable
insights
into
application
polymers.
Highlights
plays
dual
functions
gas
condensed
phases
retardant.
effectively
reduces
improves
thermo‐stability
flame‐retardant
smoke‐suppression
PALC
are
elucidated.
MXene-based
thermal
camouflage
materials
have
gained
increasing
attention
due
to
their
low
emissivity,
however,
the
poor
anti-oxidation
restricts
potential
applications
under
complex
environments.
Various
modification
methods
and
strategies,
e.g.,
addition
of
antioxidant
molecules
fillers
been
developed
overcome
this,
but
realization
long-term,
reliable
using
MXene
network
(coating)
with
excellent
comprehensive
performance
remains
a
great
challenge.
Here,
hybrid
comodified
hyaluronic
acid
(HA)
hyperbranched
polysiloxane
(HSi)
is
designed
fabricated.
Notably,
presence
appreciated
HA
oxidation
sheets
without
altering
infrared
stealth
performance,
superior
other
water-soluble
polymers;
while
HSi
can
act
as
efficient
cross-linking
agents
generate
strong
interactions
between
molecules.
The
optimized
MXene/HA/HSi
composites
exhibit
mechanical
flexibility
(folded
into
crane
structure),
good
water/solvent
resistance,
long-term
stable
capability
(with
emissivity
≈0.29).
reliability
(≈8
months)
various
outdoor
weathers
scalable
coating
MXene-coated
textile
enable
them
disguise
IR
signal
targets
in
environments,
indicating
promise
achieved
material
for
camouflage,
stealth,
counter
surveillance.
Advanced Nanocomposites,
Год журнала:
2024,
Номер
1(1), С. 217 - 239
Опубликована: Янв. 1, 2024
As
a
member
of
the
two-dimensional
materials'
family,
MXene
sheets
exhibit
unique
structure
and
outstanding
functional
properties,
garnering
extensive
interest
in
many
emerging
fields.
Among
them,
derivatives
with
low
emissivity
inorganic
feature
have
positioned
them
as
promising
candidates
for
thermal
camouflage
fire
safety.
Nevertheless,
present
literature
still
lacks
comprehensive
comparative
review
focused
on
both
radiation
protection
safety
advanced
MXene-based
nanocomposite
materials.
This
paper
is
dedicated
to
offering
an
overview
recent
advances
progress
empowering
nanocomposites
context
synthesis
operational
principle,
structural
characteristics,
multifunctional
performance
emergent
applications.
Special
emphasis
placed
reviewing
camouflaging
(infrared
stealth),
flame-retardant
(passive)
early
warning
(active)
understand
relationships
between
material
compositions,
fabricating
process,
multi-scale
structures
multiple
functionalities.
Finally,
future
challenge
direction
applications
are
discussed
analyzed.
Advanced Sensor Research,
Год журнала:
2024,
Номер
3(4)
Опубликована: Янв. 31, 2024
Abstract
Flexible
piezoresistive‐sensing
materials
with
high
sensitivity
and
stable
sensing
signals
are
highly
required
to
meet
the
accurate
detecting
requirement
for
human
motion.
Herein,
a
conductive
poly(3,4‐ethylenedioxythiophene):
poly(styrenesulfonate)
/
polydimethylsiloxane
foam
(P:P@p‐PSF)
composite
strong
interfacial
action
is
designed.
The
porous
structures
good
interface
combination
not
only
show
outstanding
mechanical
flexibility
reliability
but
also
possess
at
relatively
wide
strain
range.
P:P@p‐PSF
sensor
achieves
extreme
(Gauge
Factor)
of
6.25
in
subtle
range
1%–8%.
Furthermore,
forms
interconnected
network
induced
by
serious
deformation
elastic‐interconnect
pores,
thus
providing
extremely
sensitive
behavior
(97.4%
resistance
change
rate
60%
compressive
strain).
Moreover,
presents
repeatable
stability
thermal
adaptation,
which
would
critical
requirements
vital
signs,
motion
monitoring,
so
on.
This
work
supplies
insight
into
design
new
flexible
material
overcome
weak
problem
mismatch
between
filler
matrix,
showing
great
application
potential
field
electronic
skin.
Abstract
Owing
to
their
high
sensitivity
across
a
wide
stress
range,
mechanical
reliability,
and
rapid
response
time,
flexible
polymer
foam
piezoresistive
sensors
have
been
extensively
used
in
various
fields.
The
reliable
application
of
these
under
harsh
environments,
however,
is
severely
limited
by
structural
devastation
poor
interfacial
bonding
between
polymers
conductive
nanoparticles.
To
address
the
above
issues,
robust
MXene/CNT
nanocoatings
on
surface,
where
chemical
assembly
MXene
nanosheets
physical
anchoring
CNTs
lead
strong
bonding,
are
designed
described,
which
endows
foams
with
reliability
unexpected
multi‐functionalities
without
compromising
instinct
properties.
optimized
nanocomposites
thus
maintain
outstanding
wide‐temperature
flexibility
(−60–210
°C)
elasticity
(≈3%
residual
strain
after
1000
cycles).
Moreover,
display
good
at
relatively
range
0–70%
remarkable
stability
acidic
alkaline
settings.
Furthermore,
exceptional
fire
resistance
(UL‐94
V‐0
rating)
can
provide
stable
sensing
behavior
(over
300
cycles)
even
being
exposed
flames
for
5
s,
making
them
one
most
materials
so
far.
Clearly,
this
work
widens
applications
based
silicone
environments.
