Applied Sciences,
Год журнала:
2024,
Номер
14(23), С. 11464 - 11464
Опубликована: Дек. 9, 2024
This
paper
presents
a
comparative
analysis
of
fiber
aspect
ratios
using
scanning
electron
microscopy
(SEM)
and
the
mean
field
homogenization
approach.
The
novelty
this
work
lies
in
an
effective
length
evaluation
based
on
makes
it
possible
to
use
microscope
image
samples
corresponding
sample
size
microtomography.
Molded
pellets
four
polyamide-6
short-glass
fiber-reinforced
composites
with
mass
fractions
15%,
30%,
50%
were
considered.
ratio
distribution
measured
by
SEM
for
investigated
materials
was
20.25
coefficient
variation
5.1%.
obtained
theory
tensile
curve
approximation
underestimated
at
13.698
5.2%.
deviation
between
micro-
macro-estimates
can
be
represented
as
68%
8.5%.
developed
technology
preparing
automated
processing
used
study
other
short-reinforced
polymer
composite
materials.
estimates
serve
useful
reference
when
calibrating
models
short-fiber-reinforced
Chemosphere,
Год журнала:
2025,
Номер
379, С. 144415 - 144415
Опубликована: Апрель 18, 2025
Natural
biocomposites
offer
promising
alternatives
to
petroleum-based
composites
thanks
their
biocompatibility,
sustainability,
and
low
environmental
impact.
However,
they
must
also
demonstrate
competitive
mechanical
properties
adaptability
manufacturing
processes.
To
this
end,
we
developed
cellulosic
using
plasticized
cellulose
acetate
(PCA)
reinforced
with
fibers
at
loadings
from
30
50
wt%.
Mechanical
were
determined
tensile,
bending,
impact
tests
interfacial
bonding
was
analyzed
scanning
electron
microscopy
(SEM).
Results
showed
that
the
adhesion
of
wt%
increased
Young's
modulus
by
300
%
tensile
strength
12
%.
Flexural
improved:
flexural
1.52
GPa
5
for
PCA
maximum
fiber
loading,
43.3
MPa
54
strength.
elongation
break
decreased
increasing
content,
13.5
0.8
%,
along
a
74
decrease
in
SEM
results
revealed
good
dispersion,
adhesion,
porosity,
pullout.
These
underscore
potential
as
eco-friendly
high-value
utilizations,
including
electronic
dielectric
applications.
Journal of Composites Science,
Год журнала:
2025,
Номер
9(5), С. 202 - 202
Опубликована: Апрель 24, 2025
Traditional
cement-based
materials
often
fall
short
in
delivering
both
high
mechanical
strength
and
effective
vibration
damping.
Although
nano-modified
composites
have
shown
promise,
a
gap
remains
understanding
the
interaction
between
nanofillers
polymeric
phases
epoxy-based
cement
systems.
This
study
investigates
development
of
composite
dampers
with
enhanced
damping
for
structural
applications.
The
integrates
nano-SiO2
graphene
to
improve
energy
dissipation,
integrity,
long-term
performance.
A
comprehensive
experimental
mathematical
modeling
approach
was
employed
evaluate
storage
modulus,
loss
factor
(tan
δ)
using
Dynamic
Mechanical
Analysis
(DMA).
results
indicated
that
incorporating
2.0
wt.%
0.05
leads
an
optimum
increase
properties,
achieving
92%
enhancement
compressive
38%
improvement
compared
conventional
composites.
Beyond
this
optimal
composition,
agglomeration
effects
reduce
reinforcement
efficiency.
Microstructural
investigations
TEM
EDX
confirmed
homogeneous
dispersion
nanofillers,
leading
matrix
densification
improved
interfacial
bonding.
validated
model
proposed
predict
viscoelastic
behavior,
correlating
well
findings.
These
highlight
potential
high-performance
applications
sustainable
infrastructures.
Materials,
Год журнала:
2024,
Номер
17(23), С. 5875 - 5875
Опубликована: Ноя. 29, 2024
The
increasing
complexity
and
production
volume
of
glass-fiber-reinforced
polymers
(GFRP)
present
significant
recycling
challenges.
This
paper
explores
a
potential
use
for
mechanically
recycled
GFRP
by
blending
it
with
high-density
polyethylene
(HDPE).
composite
could
be
applied
in
products
such
as
terrace
boards,
pipes,
or
fence
posts,
substitute
filler
wood
flour
chalk.
Recycled
from
post-consumer
bus
bumpers
were
ground
then
combined
HDPE
twin-screw
extruder
at
concentrations
10,
20,
30,
40
wt%.
study
examined
the
mechanical
structural
properties
resulting
composites,
including
effects
aging
re-extrusion.
modulus
elasticity
increased
0.878
GPa
pure
rHDPE
to
1.806
composites
wt%
GFRP,
while
tensile
strength
ranged
36.5
MPa
28.7
MPa.
Additionally,
porosity
linearly
2.65%
7.44%
10
respectively.
Aging
re-extrusion
improved
properties,
reaching
34.1
MPa,
attributed
reduction
nearly
half,
3.43%.
Applied Sciences,
Год журнала:
2024,
Номер
14(23), С. 11464 - 11464
Опубликована: Дек. 9, 2024
This
paper
presents
a
comparative
analysis
of
fiber
aspect
ratios
using
scanning
electron
microscopy
(SEM)
and
the
mean
field
homogenization
approach.
The
novelty
this
work
lies
in
an
effective
length
evaluation
based
on
makes
it
possible
to
use
microscope
image
samples
corresponding
sample
size
microtomography.
Molded
pellets
four
polyamide-6
short-glass
fiber-reinforced
composites
with
mass
fractions
15%,
30%,
50%
were
considered.
ratio
distribution
measured
by
SEM
for
investigated
materials
was
20.25
coefficient
variation
5.1%.
obtained
theory
tensile
curve
approximation
underestimated
at
13.698
5.2%.
deviation
between
micro-
macro-estimates
can
be
represented
as
68%
8.5%.
developed
technology
preparing
automated
processing
used
study
other
short-reinforced
polymer
composite
materials.
estimates
serve
useful
reference
when
calibrating
models
short-fiber-reinforced
