Manufacture and testing of biomass-derivable thermosets for wind blade recycling
Science,
Journal Year:
2024,
Volume and Issue:
385(6711), P. 854 - 860
Published: Aug. 22, 2024
Wind
energy
is
helping
to
decarbonize
the
electrical
grid,
but
wind
blades
are
not
recyclable,
and
current
end-of-life
management
strategies
sustainable.
To
address
material
recyclability
challenges
in
sustainable
infrastructure,
we
introduce
scalable
biomass-derivable
polyester
covalent
adaptable
networks
corresponding
fiber-reinforced
composites
for
recyclable
blade
fabrication.
Through
experimental
computational
studies,
including
vacuum-assisted
resin-transfer
molding
of
a
9-meter
prototype,
demonstrate
drop-in
technological
readiness
this
with
existing
manufacture
techniques,
superior
properties
relative
incumbent
materials,
practical
chemical
recyclability.
Most
notable
counterintuitive
creep
suppression,
outperforming
industry
state-of-the-art
thermosets
despite
dynamic
cross-link
topology.
Overall,
report
details
many
facets
manufacture,
encompassing
chemistry,
engineering,
safety,
mechanical
analyses,
weathering,
recyclability,
enabling
realistic
path
toward
biomass-derivable,
blades.
Language: Английский
Glassy Dynamics of Epoxy-Amine Thermosets Containing Dynamic, Aromatic Disulfides
Macromolecules,
Journal Year:
2024,
Volume and Issue:
57(15), P. 7112 - 7122
Published: July 30, 2024
Continued
progress
in
understanding
the
relaxations
and
mechanical
performance
of
covalent
adaptable
networks
(CANs)
will
lead
to
further
adoption
these
unique
materials
across
a
wide
range
applications.
Using
model
CAN
system
consisting
dynamic,
aromatic
disulfides
epoxy-amine
thermosets,
several
network
characteristics
were
found
vary
as
function
disulfide
concentration
topological
placement.
The
mass
density
was
increase
significantly
with
concentration,
while
glass
transition
temperature
decreased
linearly
content
(from
190
130
°C),
measured
by
modulated
differential
scanning
calorimetry
dynamic
analysis.
Furthermore,
apparent
activation
energy
transition,
Eg,
estimated
time–temperature
superposition,
increasing
concentration.
Significant
changes
sub-Tg
also
observed
correlate
strongly
placement
bonds
within
network.
Language: Английский
High-Performance Vitrimer Entailing Renewable Plasticizer Engineered for Processability and Reactivity toward Composite Applications
ACS Applied Polymer Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 22, 2025
Language: Английский
Implementing recyclable bio- and CO2-sourced synergetic dynamic matrices via precise control of curing and properties for natural fiber composites within industrially relevant resin transfer molding
Chemical Engineering Journal,
Journal Year:
2025,
Volume and Issue:
unknown, P. 161506 - 161506
Published: March 1, 2025
Language: Английский
Qualification of the Vitrimeric Matrices in Industrial-Scale Wet Filament Winding Processes for Type-4 Pressure Vessels
Polymers,
Journal Year:
2025,
Volume and Issue:
17(9), P. 1146 - 1146
Published: April 23, 2025
The
production
of
fibre-reinforced
composites
for
use
in
applications
such
as
type-4
pressure
vessels
hydrogen
storage
is
achieved
through
the
a
thermoset
matrix.
However,
recycling
thermosets
presents
significant
challenge
due
to
lack
established
methods.
Epoxy-based
vitrimers
show
characteristics
during
manufacturing
and
utilisation
phases
but
exhibit
thermoplastic
behaviour
at
elevated
temperatures
190
°C.
This
study
investigates
industrial-scale
carbon
fibre
reinforced
via
wet
filament
winding,
exemplified
by
vessel
demonstrator.
Processing
conditions
industrial
processes
have
yet
be
applied
vitrimers;
therefore,
two
vitrimer
formulations
are
compared
conventional
epoxy
thermoset.
processability
resulting
composite
quality
wound
using
these
materials
matrices
compared.
mechanical
properties
an
interlaminar
shear
strength
test,
demonstrating
that
vitrimeric
19.8%
(23
°C)
49.2%
(140
improved
strength.
Consequently,
epoxy-based
investigated
this
can
employed
direct
replacement
matrix
applications,
with
potential
composite.
To
increase
qualities,
winding
process
must
adapted
vitrimers,
since
pore
free
could
not
achieved.
Language: Английский
Thermo-rheological and kinetic characterization and modeling of an epoxy vitrimer based on polyimine exchange
Soft Matter,
Journal Year:
2024,
Volume and Issue:
20(31), P. 6289 - 6301
Published: Jan. 1, 2024
Accurate
modelling
of
epoxy-imine-based
vitrimer
for
composite
applications:
Cure
kinetics,
thermo-rheological
behaviour,
glass
transition
temperature
development.
Language: Английский
Synergetic Hybridization Strategy to Enhance the Dynamicity of Poorly Dynamic CO2‐derived Vitrimers achieved by a Simple Copolymerization Approach
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 18, 2024
Abstract
Copolymerization
allows
tuning
polymer's
properties
and
a
synergetic
effect
may
be
achieved
for
the
resulting
hybrid,
i.e.,
outperforming
of
its
parents
as
often
observed
in
natural
materials.
This
concept
is
herein
applied
to
enhance
both
dynamicity
vitrimeric
materials
using
poorly
dynamic
hydroxyurethane
non‐dynamic
epoxy
thermosets.
The
latter
generates
activated
hydroxyl,
promoting
exchange
reactions
15
times
faster
than
pure
polyhydroxyurethanes.
strategy
obtaining
catalyst‐free
high‐performance
vitrimers
from
conventional
epoxy‐amine
formulations
an
easily
scalable
(bio‐)CO
2
‐based
yet
efficient
network.
hybrid
network
exhibits
modulus
retention
superior
95%
with
fast
relaxation
(<10
min).
moieties
actively
participate
hybrid.
material
can
manufactured
any
formulation.
new
design
networks
opens
door
large‐scale
circular
structural
carbon
fiber
composites
(CFRP).
CFRP
reshaped
welded
flat
plates
complex
geometries.
degradable
under
mild
conditions,
facilitating
recovery
re‐use
high‐added‐value
fibers.
accessible
cost‐effective
approach
provides
versatile
range
tunable
epoxides,
applicable
across
various
industries
minimal
adjustments
existing
marketed
products.
Language: Английский