Crystallization-induced residual deformation evolution in thermoplastics during material extrusion and subsequent annealing
Mechanics of Materials,
Год журнала:
2025,
Номер
unknown, С. 105345 - 105345
Опубликована: Март 1, 2025
Язык: Английский
Enhancing Energy Absorption in Printed PLA Components Through Post-Processing and Topological Optimization
Results in Engineering,
Год журнала:
2025,
Номер
unknown, С. 104972 - 104972
Опубликована: Апрель 1, 2025
Язык: Английский
Additively manufactured materials: A critical review on their anisotropic mechanical properties and modeling methods
Journal of Manufacturing Processes,
Год журнала:
2025,
Номер
141, С. 789 - 814
Опубликована: Март 11, 2025
Язык: Английский
Using steel slag and fly ash solid wastes to fabricate ceramics-based phase change composites with excellent mechanical and thermal properties applied in thermal energy storage
Ceramics International,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 1, 2024
Язык: Английский
Development of polyether ether ketone-based composites by fused filament fabrication: high-temperature resistance and high performance
Composites Communications,
Год журнала:
2025,
Номер
unknown, С. 102283 - 102283
Опубликована: Янв. 1, 2025
Язык: Английский
Thermal annealing and microwave irradiation in enhancing the mechanical performance of 3D printing CF/PA12 composite
Journal of Polymer Engineering,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 23, 2025
Abstract
3D
printing
polymers
and
their
composites
have
shown
considerable
potential
in
various
application
fields,
yet
limited
mechanical
properties
hindered
widespread
use
structural
materials.
Recently,
postprocessing
techniques
been
proposed
as
efficient
convenient
methods
to
enhance
the
of
structures.
This
study
systematically
investigates
effects
thermal
annealing
microwave
irradiation
on
microstructure
carbon
fiber
reinforced
polyamide
12
(CF/PA12).
The
results
clearly
demonstrate
that
significantly
outperforms
improving
fiber–matrix
interfacial
adhesion
crystallization.
Specifically,
provides
necessary
time
for
molecular
chain
relaxation,
effectively
releasing
internal
stresses.
Additionally,
optimizes
transcrystalline
structure
at
interface
volume
fraction
crystalline
regions
within
matrix.
Compared
pristine
samples,
annealed
specimens
exhibited
increases
19.34
%
tensile
strength
27.11
flexural
strength.
research
an
in-depth
insight
into
enhancing
CF/PA12
through
offers
a
scientific
basis
large-scale
application.
Язык: Английский
Additively Manufactured Carbon Fibre PETG Composites: Effect of Print Parameters on Mechanical Properties
Polymers,
Год журнала:
2024,
Номер
16(23), С. 3336 - 3336
Опубликована: Ноя. 28, 2024
This
study
investigates
the
quasi-static
and
viscoelastic
properties
of
additively
manufactured
(AM)
PETG
reinforced
with
short
carbon
fibres.
Samples
were
using
different
parameters
in
terms
infill
pattern,
porosity,
annealing
condition.
Tensile
compressive
tests
conducted
to
determine
such
as
Young’s
modulus
toughness,
dynamic
mechanical
analysis
was
used
under
a
frequency
sweep
1–100
Hz
describe
behaviour
composites.
The
major
impacts
responses
between
print
quantified
Analyses
Variance
(ANOVAs),
which
revealed
contributor
each
property.
Fractography
on
tensile
samples
scanning
electron
microscopy
demonstrated
fibre
pull-out,
indicating
poor
fibre–matrix
bonding,
but
also
interfacial
bonding
raster
lines
annealed
samples.
had
prominent
effect
latitudinal
where
force
applied
perpendicular
lines.
Generally,
porosity
appeared
have
greatest
contribution
variance
properties,
exception
modulus,
pattern
more
substantial
effect.
Annealing
caused
consistent
increase
tested
samples,
can
be
support
design
optimisation
AM
parts
when
they
are
specific
loading
conditions.
Язык: Английский
UV Light Exposure Modifies the Molecular Weight Characteristics and Improves the Melt Extrusion Additive Manufacturing of Polycarbonate
ACS Applied Polymer Materials,
Год журнала:
2024,
Номер
6(20), С. 12559 - 12567
Опубликована: Окт. 12, 2024
Bisphenol
A
polycarbonates
(PC)
are
among
the
important
engineering
thermoplastics
utilized
as
feedstocks
for
melt
extrusion
additive
manufacturing,
including
fused
filament
fabrication
(FFF).
However,
limited
diffusion
of
polymer
chains
between
adjacent
layers
and
complex
thermal
histories
encountered
during
printing
process
lead
to
poor
interlayer
adhesion,
residual
stress,
voids
in
printed
parts,
which
turn
leads
mechanical
performance
anisotropy.
To
address
these
issues,
our
group
has
modified
an
FFF
printer
by
integrating
ultraviolet
(UV)-LED
optical
fiber
into
head.
This
modification
allows
real-time
illumination
structure
deposition
process,
enabling
a
thorough
investigation
its
impact
on
properties
resulting
parts.
Examination
behavior
fracture
surfaces
parts
shows
that
PC
with
UV
light
attains
higher
toughness
both
transverse
longitudinal
directions
well
decreased
void
space
compared
without
light.
Careful
analysis
molecular
weight
characteristics
broader
distribution
extended
lower
tail
indicates
chain
scission
upon
exposure
formation
shorter
range
sizes,
increases
UV-light-printed
PC.
These
observations
interpreted
indicate
change
fosters
improved
interfilamentous
diffusion,
consequently
lowering
thus
enhancing
performance.
findings
therefore
provide
foundational
insights
how
can
be
used
tune
offering
distinctive
straightforward
strategy
created
manufacturing
thermoplastics.
Язык: Английский