Innovative self-repairing binders tackling degradation and de-lithiation challenges: Structure, mechanism, high energy and durability
Materials Science and Engineering R Reports,
Год журнала:
2024,
Номер
160, С. 100830 - 100830
Опубликована: Июль 16, 2024
Язык: Английский
Investigation on Dynamic and Static Modulus and Creep of Bio-Based Polyurethane-Modified Asphalt Mixture
Polymers,
Год журнала:
2025,
Номер
17(3), С. 359 - 359
Опубликована: Янв. 28, 2025
The
superior
mechanical
qualities
of
polyurethane
have
garnered
increasing
attention
for
its
application
in
modifying
asphalt
mixtures.
However,
needs
to
use
polyols
cure,
and
need
be
produced
by
petroleum
refining.
As
we
all
know,
is
a
non-renewable
energy
source.
In
order
reduce
oil
consumption
conform
the
trend
green
economy,
lignin
chitin
were
used
instead
as
curing
agents.
this
paper,
biological
polyurethane-modified
mixture
(BPA-16)
was
designed
compared
with
(PA-16)
matrix
(MA-16).
viscoelastic
characteristics
three
mixtures
evaluated
using
dynamic
modulus,
static
creep
tests.
interplay
between
modulus
frequency
examined,
along
variations
correlation
modulus.
behavior
ultimately
examined
uniaxial
load
test.
findings
indicate
that
BPA-16
exceeds
those
PA-16
MA-16
8.7%
30.4%
at
25
Hz
−20
°C,
respectively.
At
50
phase
angle
decreases
26.3%
relative
MA-16.
Lignin
chitin,
when
utilized
agents
place
polyol,
can
enhance
stability
low
temperatures
diminish
their
temperature
sensitivity.
A
bio-based
also
maintain
better
elastic
properties
wider
range.
−20–20
moduli
BPA-16,
are
linear,
they
converted
formula
different
frequencies.
failure
stages
PA-16,
not
observed
during
3600
s
duration,
exhibiting
least
strain,
indicating
resistance
permanent
deformation
PU-modified
mixes.
Язык: Английский
Enhancing the properties and engineering performance of asphalt binders and mixtures with physicochemically treated waste wind turbine blades
Construction and Building Materials,
Год журнала:
2025,
Номер
473, С. 141023 - 141023
Опубликована: Март 31, 2025
Язык: Английский
Biopolymers as bitumen additives: a systematic quantitative literature review
Road Materials and Pavement Design,
Год журнала:
2025,
Номер
unknown, С. 1 - 58
Опубликована: Апрель 3, 2025
Язык: Английский
Performance of PTMEG/CO composite polyurethane and modification mechanism of polyurethane-modified asphalt
Construction and Building Materials,
Год журнала:
2025,
Номер
475, С. 141117 - 141117
Опубликована: Апрель 11, 2025
Язык: Английский
S‐S Vitrimer Composites via Simplified Fabrication: Recyclable Graphite Flakes Simultaneously Enhance Mechanical‐Thermal Properties and Suppress Disulfide Exchange
Macromolecular Chemistry and Physics,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 22, 2025
Abstract
Vitrimers
are
covalently
crosslinked
networks
with
dynamic
bond
exchange,
where
their
behavior
is
typically
regulated
by
adjusting
network
structures
or
incorporating
fillers.
This
study
introduces
graphite
flakes
(GFs)
into
sulfur‐containing.
to
investigate
effects
on
mechanical
properties,
stress
relaxation,
and
thermal
conductivity.
The
results
demonstrate
that
adding
10
wt.%
GFs
increases
tensile
strength
4.37%
compared
pure
epoxy
vitrimer,
while
higher
filler
content
reduces
toughness
decelerates
relaxation.
At
160
°C,
the
characteristic
relaxation
time
rises
from
15.35
s
(pure
vitrimer)
108.85
(40
wt%
composite).
Arrhenius
prefactor
(
τ₀
)
decreases
loading,
whereas
activation
energy
E
a
remains
nearly
unaffected.
Additionally,
40
enhance
diffusivity
110.17%
due
oriented
phonon
transport
channels.
Chemical
recycling
via
DTT
solution
achieves
complete
matrix
degradation
recovery
without
damaging
GFs.
provided
valuable
insights
for
optimizing
vitrimer
composites,
particularly
in
enhancing
conductivity
modulating
properties.
Язык: Английский
Sustainable fabrication of porous bio-based polyurethane as triboelectric material realized by dynamic bond and scN2 foaming
Chemical Engineering Journal,
Год журнала:
2025,
Номер
unknown, С. 163012 - 163012
Опубликована: Апрель 1, 2025
Язык: Английский
Polyurethanes synthesized from diisocyanate trimers and polyethylene glycol undergo crosslinking via thermally reversible Diels–Alder reactions
Macromolecular Research,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 15, 2025
Язык: Английский
Effect of Thermal Aging on Polyurethane Degradation and the Influence of Unsaturations in the Hard Segment
Journal of Polymer Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 16, 2025
ABSTRACT
This
research
focuses
on
synthesizing
two
types
of
polyurethanes
(PUs):
one
with
saturated
C–C
bonds
(SPU)
and
another
unsaturated
CC
(UPU),
primarily
in
the
hard
segment.
Both
PUs
underwent
thermal
aging
for
30
days
at
150°C
an
air
atmosphere
to
investigate
influence
unsaturation
their
degradation.
The
samples,
both
before
after
aging,
were
characterized
using
FT‐IR,
XRD,
TGA,
DSC,
mechanical
testing,
SEM.
Additionally,
percentage
weight
loss
was
measured.
Similar
changes
observed
SPU
UPU
aging.
Thermal
degradation
resulted
mass
losses
approximately
5%
10%
UPU,
accompanied
by
chemical
alterations
PUs,
as
evidenced
FT‐IR.
Mechanical
testing
revealed
a
decline
performance
materials,
notable
reductions
yield
strength
elongation
break.
exhibited
more
pronounced
properties
compared
SPU.
SEM
analysis
further
confirmed
surface
materials.
Among
demonstrated
higher
susceptibility
study
provides
valuable
insights
into
how
diols
or
polyols
used
PU
synthesis
influences
resulting
material
properties.
findings
also
highlight
potential
implications
when
exposed
temperatures
exceeding
processing
operational
limits.
Язык: Английский