Engineered phosphorus-nitrogen-silicon segments enabling strong, tough and flame retardant polyurea for application in stretchable electrode devices
Jue Wang,
Hongliang Ding,
Xiaohui Jin
и другие.
Chemical Engineering Journal,
Год журнала:
2025,
Номер
unknown, С. 162005 - 162005
Опубликована: Март 1, 2025
Язык: Английский
Ultrarobust, Self-Healing Poly(urethane-urea) Elastomer with Superior Tensile Strength and Intrinsic Flame Retardancy Enabled by Coordination Cross-Linking
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(33), С. 43979 - 43990
Опубликована: Авг. 8, 2024
Poly(urethane-urea)
elastomers
(PUUEs)
have
gained
significant
attention
recently
due
to
their
growing
demand
in
electronic
skin,
wearable
devices,
and
aerospace
applications.
The
practical
implementation
of
these
necessitates
many
exceptional
properties
ensure
robust
safe
utilization.
However,
achieving
an
optimal
balance
between
high
mechanical
strength,
good
self-healing
at
moderate
temperatures,
efficient
flame
retardancy
for
poly(urethane-urea)
remains
a
formidable
challenge.
In
this
study,
we
incorporated
metal
coordination
bonds
flame-retarding
phosphinate
groups
into
the
design
simultaneously,
resulting
high-strength,
self-healing,
flame-retardant
elastomer,
termed
PNPU-2%Zn.
Additional
supramolecular
cross-links
plasticizing
effects
phosphinate-endowed
PUUEs
with
relatively
remarkable
tensile
strength
(20.9
MPa),
elastic
modulus
(10.8
efficiency
(above
97%).
Besides,
PNPU-2%Zn
possessed
self-extinguishing
characteristics
limiting
oxygen
index
(LOI)
26.5%.
Such
elastomer
superior
can
resist
both
fracture
fire
hazards,
providing
insights
development
high-performance
components
applications
devices.
Язык: Английский
Towards Sustainable and Fire‐Safe Thermosets Using Phosphorus‐Containing Covalent Adaptable Networks
ChemPlusChem,
Год журнала:
2024,
Номер
89(11)
Опубликована: Июль 8, 2024
Abstract
Dynamic
covalent
chemistry
is
a
promising
strategy
for
developing
recyclable
thermosets
and
their
carbon
fiber
reinforced
composites,
in
line
with
the
goal
of
green
sustainable
development.
However,
significant
challenge
lies
balancing
dynamic
reversibility
desired
service
performances,
such
as
thermal,
mechanical
properties,
flame
retardancy.
It
has
hindered
broader
application
materials
beyond
initial
proof
concept.
This
concept
provides
an
overview
current
state
research
on
phosphorus‐containing
adaptable
networks
(CANs),
highlighting
key
designing
regulating
principles
tailoring
comprehensive
properties
including
retardancy,
thermal
well
behaviours
malleability,
reprocessability
degradability.
Finally,
new
frontiers
opportunities
high‐performance
CANs‐based
composites
structural
engineering
applications
are
prospected.
Язык: Английский