ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(45), С. 62639 - 62653
Опубликована: Ноя. 4, 2024
Developing
devices
emphasizing
safety
protection
is
becoming
increasingly
important
due
to
the
widespread
occurrence
of
impact
damage
and
thermal
hazards.
Herein,
F-SSG/TPU-based
circular
cavity
structure
(FC)
developed
through
a
convenient
efficient
template
method,
which
can
effectively
achieve
anti-impact
insulation
for
protection.
The
flame-retardant
shear
stiffening
gel/thermoplastic
urethane
(F-SSG/TPU)
synthesized
dynamic
interaction
between
SSG,
TPU,
modified
ammonium
polyphosphate
(APP@UiO-66-NH2)
by
thermo-solvent
reactions.
FC
dissipate
force
from
4.19
0.99
kN
at
45
cm
impacting
heights,
indicating
good
performance.
Moreover,
test
demonstrates
that
achieves
temperature
drop
76
°C
160
attributed
unique
design.
Under
continuous
shock
high-temperature
flame,
remains
intact,
its
performance
almost
undamaged.
These
results
elaborate
designed
resist
various
damage,
such
as
collision.
Then,
wearable
wristband
integrated
with
exhibits
superior
resistance
heat
properties
compared
commercial
wristbands.
In
short,
this
based
on
high-performance
F-SSG/TPU
material
shows
promising
potential
applications
in
field.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 31, 2025
Abstract
Although
healable
waterborne
polymers
have
attracted
significant
attention
in
recent
years
due
to
their
environmentally
friendly
properties,
the
inferior
mechanical
properties
still
hinder
further
propagation.
Inspired
by
micro‐structure
of
pangolin
scales,
herein,
a
novel
supramolecular
polymer
network
(SWPN)
named
SWPUMA‐SPPEK10
is
proposed
this
study.
This
fabricated
complexing
sulfonated
poly(phthalazinone
ether
ketone)
(SPPEK)
with
acylsemicarbazide
(ASC)
containing
cationic
polyurethane
(SWPUMA)
an
aqueous
solution
followed
hot‐pressing
process.
Due
synergistic
effects
ASC,
electrostatic
interactions,
and
SPPEK
nanoparticles,
exhibited
remarkable
tensile
strength
55.19
MPa,
toughness
305.93
MJ
m
−3
.
The
rich
dynamic
interactions
within
chains
also
imparted
it
excellent
healability
recyclability.
biomimetic
structural
design
provides
new
insight
for
constructing
high‐performance
robust
recyclability,
which
may
play
critical
role
mitigating
global
environmental
pollution.
Materials Chemistry Frontiers,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
A
mechanically
robust
rosin-based
polyurethane
elastomer
that
can
be
self-healed
at
room
temperature
and
recycled
multiple
times
for
applications
in
electronic
devices.
Abstract
Despite
extensive
research
on
enhancing
the
strength,
toughness,
or
impact
resistance
of
elastomers,
materials
that
simultaneously
integrate
these
properties
remain
elusive.
In
this
work,
a
multifunctional
elastomer
is
developed
with
high
superior
and
excellent
by
designing
multiscale
structures.
The
synergistic
coupling
strong
weak
hydrogen
bonds,
rigid
ring‐flexible
chain
coordination,
precise
control
hard/soft
block
ratio
enabled
development
an
optimized
architecture
tailored
for
performance,
achieving
tensile
strength
84
MPa
toughness
450
MJ
m⁻
3
,
while
maintaining
across
varying
strain
rates.
Additionally,
incorporation
hindered
urea
dynamic
covalent
bonds
bond‐induced
localized
conjugation
effect
impart
thermal
adhesion
fluorescence
capabilities,
broadening
material's
functional
application
scenarios.
This
molecular
design
strategy
not
only
facilitates
tailoring
high‐performance
but
also
provides
new
insights
into
structure‐property
relationships
in
elastomers.
Abstract
Auxetic
conductive
elastomers
(ACEs)
are
appealing
due
to
their
unique
negative
Poisson's
ratio
(NPR)
effects.
Nevertheless,
conventional
ACEs
often
produced
by
the
creation
of
geometric
structures
through
pore‐forming
techniques
on
elastomers,
which
substantially
compromise
mechanical
and
performance.
Inspired
composite
structure
skin
comprising
collagen
fibers
elastin,
this
study
reports
an
integrated
auxetic
elastomer
(IACE)
composing
a
high‐modulus
as
skeleton
low‐modulus
soft
matrix.
Benefitting
from
covalent
interlinkages
topological
entanglements
at
skeleton‐matrix
interface,
IACE
is
flat
void‐free
with
no
abrupt
soft‐to‐hard
transition.
Compared
alone,
exhibits
enhanced
properties,
including
fracture
stress
2.6
MPa,
elongation
break
457%,
toughness
7.2
MJ
m
−3
.
Furthermore,
its
behavior
NPR
effect
consistently
observed
across
wide
strain
range
0–85%.
Leveraging
ion
transport
pathway
enabled
deformation,
demonstrates
reliable
sensing
performance
improved
sensitivity
over
broad
deformation
range.
This
work
presents
promising
strategy
for
developing
robust
interface
strain,
advancing
potentials
in
intelligent
flexible
electronics.
Polymer science & technology.,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 27, 2024
As
oceanic
activities
expand,
the
strategic
importance
of
designing
multifunctional
materials
suitable
for
underwater
applications
becomes
increasingly
apparent.
Underwater
self-healing
offer
significant
advantages
by
autonomously
repairing
damage
in-situ
during
operations,
thereby
minimizing
resource
waste
and
enhancing
environmental
sustainability.
However,
most
do
not
have
sufficient
stability
in
aquatic
environments
due
to
presence
water-sensitive
weak
cross-linking
bonds.
Herein,
polysulfide
elastomers
capable
been
developed
through
a
straightforward,
one-step
thiol–ene
click
reaction
strategy.
This
can
occur
its
water
insensitivity.
The
abundance
disulfide
bonds
elastomer
enables
formation
coordination
with
metals,
endowing
material
outstanding
metal
adhesion
properties.
optimal
LPTM-55
shows
extraordinary
toughness
1.49
MJ/m3,
efficiency
90%
within
7
h
strength
up
1.2
MPa.
innovative
material,
characterized
curing,
capabilities,
demonstrates
potential
sealing
repair.
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(45), С. 62639 - 62653
Опубликована: Ноя. 4, 2024
Developing
devices
emphasizing
safety
protection
is
becoming
increasingly
important
due
to
the
widespread
occurrence
of
impact
damage
and
thermal
hazards.
Herein,
F-SSG/TPU-based
circular
cavity
structure
(FC)
developed
through
a
convenient
efficient
template
method,
which
can
effectively
achieve
anti-impact
insulation
for
protection.
The
flame-retardant
shear
stiffening
gel/thermoplastic
urethane
(F-SSG/TPU)
synthesized
dynamic
interaction
between
SSG,
TPU,
modified
ammonium
polyphosphate
(APP@UiO-66-NH2)
by
thermo-solvent
reactions.
FC
dissipate
force
from
4.19
0.99
kN
at
45
cm
impacting
heights,
indicating
good
performance.
Moreover,
test
demonstrates
that
achieves
temperature
drop
76
°C
160
attributed
unique
design.
Under
continuous
shock
high-temperature
flame,
remains
intact,
its
performance
almost
undamaged.
These
results
elaborate
designed
resist
various
damage,
such
as
collision.
Then,
wearable
wristband
integrated
with
exhibits
superior
resistance
heat
properties
compared
commercial
wristbands.
In
short,
this
based
on
high-performance
F-SSG/TPU
material
shows
promising
potential
applications
in
field.
