Polymers,
Год журнала:
2024,
Номер
16(11), С. 1483 - 1483
Опубликована: Май 23, 2024
This
paper
presents
an
experimental
investigation
of
nanocomposites
composed
three
ratios
epoxy/graphene
nanoplatelets
(GNPs)
by
weight.
The
0.1,
0.2,
and
0.3
wt.%
specimens
were
carefully
manufactured,
their
mechanical
thermal
conductivity
properties
examined.
tensile
strength
modulus
epoxy/GNPs
enhanced
the
large
surface
area
graphene
nanoplatelets,
causing
crack
deflection
that
created
new
fracture
fronts
friction
because
rough
surface.
However,
compressive
was
gradually
reduced
as
GNP
loading
percentages
increased.
probably
due
to
severe
plastic
yielding
on
epoxy,
leading
catastrophic
axial
splitting
caused
premature
fractures.
Furthermore,
highest
0.1283
W/m-K,
representing
a
20.92%
improvement
over
neat
epoxy
(0.1061
W/m-K)
when
GNPs
added
epoxy.
efficient
heat
propagation
in
electron
movement
through
percolative
paths.
failure
mode
epoxy/GNP
showed
few
deflected
bifurcated
cracks
brittle,
dimple-like
Contrarily,
GNP-added
flexural
buckling
brittle
large-axial
splitting.
considered
damage-tolerant
material.
Materials Chemistry Frontiers,
Год журнала:
2023,
Номер
7(21), С. 5140 - 5170
Опубликована: Янв. 1, 2023
Metal–organic
frameworks
(MOFs)
are
solid
crystalline
materials
formed
by
the
self-assembly
of
organic
ligands
and
metal
ions
or
clusters.
Combining
advantages
membrane
separation
MOFs,
MOFs-based
membranes
used
in
water
treatment.
Polymer Composites,
Год журнала:
2023,
Номер
45(3), С. 2656 - 2669
Опубликована: Ноя. 23, 2023
Abstract
The
orientation
of
fibers
in
polymer
matrix
plays
a
crucial
role
governing
the
performance
composites
including
friction
and
wear.
In
present
work,
effect
fiber
on
tribological
behavior
3D
printed
short
carbon
reinforced
PEEK
(CF/PEEK)
was
studied
by
two
series
tribo‐tests,
namely
macro‐scale
continuous
sliding
micro‐scale
multiple
scratching.
Fiber
orientations
included
parallel,
tilted
anti‐parallel
relative
to
direction
both
macro
micro
It
revealed
that
showed
strong
dependence
applied
loads.
most
cases,
lower
wear
were
obtained
when
rather
than
parallel
or
sliding.
With
orientation,
composite
also
exhibited
best
scratching
except
for
at
lowest
normal
load.
To
reveal
mechanisms
behind
this
effects,
composite's
worn
surface,
as
well
those
counter
rings,
characterized.
Findings
work
indicates
tests
can
help
understand
appropriate
is
beneficial
improving
properties
composites,
which
be
realized
through
printing.
Highlights
filled
with
highly
oriented
manufactured
fused
deposition
modeling
(FDM).
Tribological
anisotropy
measurements
respect
orientation.
coupling
mechanism
load
discussed
influencing
composites'
properties.
