Polymers,
Год журнала:
2024,
Номер
16(24), С. 3586 - 3586
Опубликована: Дек. 21, 2024
The
issue
of
hazardous
smoke
and
toxic
gases
released
from
epoxy
resins
(EP),
which
often
causes
casualties
in
real
fires,
has
limited
its
application.
Therefore,
we
have
developed
a
novel
flame
retardant
based
on
bimetallic-doped
phytate-melamine
(BPM)
structure
with
Zn2+
Fe2+
ions
incorporated
into
the
polymer
matrix
using
straightforward
solution-based
synthetic
method.
combustion
performance
composite
was
evaluated
cone
calorimeter
test,
showed
that
peak
heat
release,
total
production
were
reduced
by
50%,
31.7%,
29.2%,
respectively,
compared
to
those
EP.
Additionally,
fire
growth
index
noticeably
60%
owing
synergistic
catalytic
effect
bimetallic
ions,
high
nitrogen
phosphorus
content
additives.
Overall,
this
study
provides
new
insights
application
doping
for
composites.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(22)
Опубликована: Март 16, 2024
Recycling
of
carbon
fiber-reinforced
polymer
composites
(CFRCs)
based
on
thermosetting
plastics
is
difficult.
In
the
present
study,
high-performance
CFRCs
are
fabricated
through
complexation
aromatic
pinacol-cross-linked
polyurethane
(PU-AP)
thermosets
with
fiber
(CF)
cloths.
PU-AP
exhibit
a
breaking
strength
95.5
MPa
and
toughness
473.6
MJ
m
Industrial & Engineering Chemistry Research,
Год журнала:
2024,
Номер
63(12), С. 5005 - 5027
Опубликована: Март 19, 2024
Traditional
epoxy
resins
(EPR),
represented
by
bisphenol
A
type,
have
high
chemical
bond
energy,
low
polarity,
and
stable
properties.
The
topological
structure
after
curing
makes
EPR
impossible
for
convenient
recycling
through
heating
or
dissolution
like
thermoplastics.
This
results
in
traditional
having
no
advantage
of
efficient
recycling,
both
molecular
the
combination
morphology
polymer
chains.
However,
introducing
degradable
dynamically
cross-linked
structures
into
to
modify
their
will
bring
good
special
responsiveness,
with
expectation
achieve
while
maintaining
original
performance.
paper
reviews
research
progress
cross-linkable
such
as
ester,
acetal,
similar
structures,
Schiff
bases,
disulfide
bonds,
Diels–Alder
addition
structures.
highlights
impact
these
themselves
on
recycling.
We
discussed
potential
structures'
findings
small-molecule
organic
chemistry
Advanced Materials,
Год журнала:
2024,
Номер
36(35)
Опубликована: Июль 14, 2024
Carbon
fiber
(CF)-reinforced
polymers
(CFRPs)
demonstrate
potential
for
use
in
personal
protective
equipment.
However,
existing
CFRPs
are
typically
rigid,
nonrecyclable,
and
lack
of
tearing
resistance.
In
this
study,
flexible,
recyclable,
resistant
polyurethane
(PU)-CF
composites
fabricated
through
complexation
reversibly
cross-linked
PU
elastomer
binders
with
CF
fabrics.
The
PU-CF
possess
a
high
strength
767
MPa
record-high
fracture
energy
2012
kJ
m
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 24, 2025
Abstract
Efficient
recycling
of
carbon
fiber‐reinforced
polymer
composites
(CFRCs)
into
their
original
monomers
and
fibers
(CFs)
in
a
non‐destructive
manner
remains
significant
challenge.
In
this
study,
high‐performance,
closed‐loop
recyclable
aromatic
polyamide
(APAD)
plastics
are
synthesized
via
polycondensation
amines
aldehydes
through
dynamic
imine
bonds.
Due
to
fully
structure
as
well
interchain
hydrogen
bonds
π–π
interactions,
APAD
exhibit
tensile
strength
≈78.3
MPa,
glass
transition
temperature
(
T
g
)
≈200.4
°C,
excellent
chemical
resistance.
The
can
be
depolymerized
mixture
polar
organic
solvents
acids
at
ambient
temperature,
enabling
high‐purity
recovery
precipitation
selective
solvents.
Water‐resistant
CF/APAD
fabricated
complexation
with
CF
cloths.
These
mechanical
properties
comparable
those
CF/epoxy
thermoset
superior
thermal
stability.
mild
depolymerization
conditions
for
enable
the
efficient
disintegration
composites.
Therefore,
CFs
realized.
recovered
cloths
used
re‐manufacture
This
study
presents
an
effective
method
CFRCs,
offering
environmental
economic
benefits.
