Constructing a gradient modulus interfacial layer on the surface of hydrotalcite enhances the interfacial properties of hydrotalcite/benzoxazine composites
Polymer Composites,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 24, 2025
Abstract
The
gradient
modulus
interface
layer
between
hydrotalcite
(LDH)
and
benzoxazine
(Bz)
polymer
matrix
was
designed
by
grafting
silane
coupling
agent
KH560.
effect
of
varying
proportions
LDH
on
the
mechanical
properties
poly(LDH/Bz)
analyzed.
When
content
at
6
wt%,
poly(KH560‐LDH/Bz)
exhibited
enhancements
78.31%,
68.58%,
117.91%
in
tensile
strength,
flexural
impact
respectively,
compared
to
poly(LDH/Bz).
This
improvement
is
attributed
interfacial
phase
KH560,
which
enhances
surface
roughness
polarity
LDH,
effectively
buffering
equilibrating
disparity
matrix.
tension
functionalized
calculated
using
Harmonic
Mean
formula.
Upon
incorporation
energy
difference
reduced,
thereby
enhancing
compatibility
two
materials.
thickness
investigated
atomic
force
microscopy
(AFM),
confirmed
presence
a
graded
within
poly(KH560‐LDH/Bz).
Highlights
poly(KH560‐LDH/BZ)
were
improved
most
when
addition
KH560‐LDH
wt%.
has
low
free
energy,
conducive
dispersion
composite
with
wt%
showed
excellent
thermal
thermomechanical
properties.
increased
41.27%.
promotes
stress
transfer
Язык: Английский
Transformation of magnesium hydroxide whiskers into high-performance multifunctional flame retardant synergists by interfacial engineering modulation
Construction and Building Materials,
Год журнала:
2025,
Номер
473, С. 141009 - 141009
Опубликована: Апрель 1, 2025
Язык: Английский
Tannic acid-mediated assembly of ultrafine Fe(OH)3 on the surface of phytic acid intercalated LDH to reduce fire hazard and improve mechanical properties of epoxy resin
Construction and Building Materials,
Год журнала:
2025,
Номер
476, С. 141210 - 141210
Опубликована: Апрель 14, 2025
Язык: Английский
Poly(Butanediol Sebacate‐Butanediol Terephthalate) (PBSeT)/Zinc Gluconate (ZG) Nanocomposite Films: A Comprehensive Investigation of Mechanical, Thermal, Rheological, and Degradation Properties
Journal of Applied Polymer Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 21, 2025
ABSTRACT
Poly(butanediol
sebacate‐butanediol
terephthalate)
(PBSeT)
has
emerged
as
a
promising
biodegradable
material,
attributed
to
its
excellent
tensile
strength
and
water
vapor
barrier
properties.
However,
certain
challenges
persist,
including
susceptibility
puncture
tearing.
To
solve
these
problems,
the
researchers
developed
composite
material
consisting
of
PBSeT
zinc
gluconate
(ZG)
improve
performance
through
synergistic
effect
ionic
hydrogen
bonds.
Notably,
tearing
PBSeT/ZG‐3
exhibits
remarkable
increase
48.7%
relative
alone,
while
load
is
enhanced
by
25.3%.
Furthermore,
XRD
TG
analyses
indicate
that
incorporation
ZG
negligible
impact
on
crystallinity
thermal
stability
composites.
Interestingly,
enzymatic
degradation
properties
are
significantly
improved
with
increasing
content,
hydrophilicity
imparted
results
in
reduction
contact
angle
materials.
In
conclusion,
integration
enhances
resistance,
tear
strength,
biodegradability
PBSeT.
These
advancements
critical
for
development
implementation
novel
applications,
particularly
fields
food
packaging,
films,
medical
Язык: Английский
Phosphotungstic Acid Intercalated MgAlLa Ternary Layered Double Hydroxides as High-Efficiency Additives for Epoxy Resin: Synergistic Enhancement of Flame Retardancy and Smoke Suppression
Coatings,
Год журнала:
2025,
Номер
15(5), С. 523 - 523
Опубликована: Апрель 27, 2025
The
inherent
flammability
and
toxic
smoke
emission
of
epoxy
resins
(EPs)
pose
significant
challenges
to
their
advanced
engineering
applications.
To
address
this
limitation,
we
developed
a
novel
flame-retardant
additive
through
the
organic
modification
layered
double
hydroxides
(LDHs)
using
ternary
MgAlLa
hydrotalcite
structure
intercalated
with
phosphotungstic
acid
(PWA).
This
innovative
design
established
synergistic
mechanism
by
combining
catalytic
carbonization
effect
lanthanum
radical
scavenging
capability
PWA.
optimized
MgAlLa-PWA/EP
composite
demonstrated
remarkable
flame
retardancy
suppression
improvements,
exhibiting
77.9%
62.4%
reductions
in
peak
heat
release
rate
(pHRR)
total
(THR),
respectively,
compared
pure
EP.
Particularly
noteworthy
was
72.6%
decrease
(TSR),
accompanied
elevation
limiting
oxygen
index
(LOI)
value
26.8%
achievement
UL-94
V-0
rating.
Microstructural
analysis
revealed
that
modified
formed
continuous
uniform
layer
increased
density
during
combustion,
effectively
inhibiting
exchange,
diffusion,
transfer.
study
provides
strategy
for
designing
multi-element
LDHs
high-efficiency
Язык: Английский