Polymers,
Год журнала:
2024,
Номер
17(1), С. 71 - 71
Опубликована: Дек. 30, 2024
The
paper
presents
a
review
of
CNTs
synthesis
methods
and
their
application
as
functional
filler
to
obtain
polymer
composites
for
various
technical
purposes
strain
gauges,
electrical
heating,
anti-static
coatings,
electrically
conductive
compounds,
etc.
Various
allow
with
different
morphology
structural
properties
be
created,
which
expands
the
possibilities
such
nanoscale
structures.
Polymers
can
provide
effects
‘shape
memory’
self-repair
mechanical
defects.
Different
combinations
polymers
dispersed
fillers
influence
change
in
thermal
conductivity,
well
positive
temperature
coefficient
resistance,
makes
it
possible
achieve
effect
self-regulation
during
heating.
make
form
PTCR
(positive
resistance)
elastomers
at
lower
concentrations,
preserve
strength
use
more
efficient
modes
heat
generation.
For
improve
sensitivity
extend
measurement
range.
thermoplastic
provides
operation
electric
heating
level
200
°C
(voltage
240
V),
allows
heaters
operate
power
supply
from
household
network.
CNTs-based
gauges
condition
monitoring
composite
materials.
Polymers,
Год журнала:
2025,
Номер
17(3), С. 409 - 409
Опубликована: Фев. 4, 2025
The
conventional
near-infrared
laser
transmission
welding
(LTW)
process
for
joining
dissimilar
transparent
polymers
is
limited
by
the
need
to
incorporate
optical
absorbents,
which
compromises
joint
performance
and
raises
biocompatibility
concerns.
To
address
these
issues,
this
study
proposed
a
surface
modification
technique
using
femtosecond
ablation
prior
process.
Experiments
involved
520
nm
of
polymers,
followed
LTW
an
808
laser,
with
subsequent
characterization
mechanical
property
evaluations.
A
maximum
strength
13.65
MPa
was
achieved.
comprehensive
investigation
conducted
into
physical
chemical
mechanisms
through
improved
polymers.
results
demonstrated
that
generated
microstructures
serve
as
substitutes
absorbents
while
also
facilitating
formation
numerous
oxygen-containing
functional
groups.
These
enhancements
improve
miscibility
bonding
between
enabling
absorbent-free
ablated
polycarbonate
(PC)
polystyrene
(PS).
This
work
confirms
both
feasibility
potential
application
direct
Understanding
heat
transfer
in
composite
materials
is
essential
for
optimizing
their
performance
critical
applications
across
industries
such
as
aerospace,
automotive,
renewable
energy,
and
construction.
This
review
offers
a
comprehensive
examination
of
the
various
mechanisms
within
explores
how
these
processes,
spanning
different
length
time
scales,
are
influenced
by
materials’
composition
structure.
Both
traditional
advanced
analytical
numerical
modeling
techniques
explored,
emphasizing
importance
predicting
thermal
behavior
scales.
Furthermore,
evaluates
current
experimental
methods
measuring
properties,
discussing
limitations
potential
areas
enhancement.
Significant
attention
devoted
to
practical
materials,
from
management
electronic
devices
heat-resistant
components
aerospace
engineering.
Recent
innovations,
integration
phase
change
development
nano-enhanced
composites,
assessed
transform
capabilities.
Ongoing
challenges
addressed,
future
research
directions
outlined,
highlighting
need
advancements
material
science
engineering
meet
emerging
demands.
aims
bridge
gap
between
fundamental
applications,
providing
understanding
that
both
rooted
driven
possibilities.
Journal of Composites Science,
Год журнала:
2025,
Номер
9(2), С. 84 - 84
Опубликована: Фев. 11, 2025
Structural
degradation
in
liquid
environments
can
hinder
the
applications
of
polymer
composites
as
structural
materials.
In
this
work,
we
study
impacts
methanol
on
surface
cracking
and
propagation
pre-formed
cracks
UV-irradiated
poly(methyl
methacrylate)/functionalized
graphene
(PMMA/FG)
composites,
followed
by
uptake
three
different
crack-generated
solvents,
namely
1-butanol,
cyclohexanol,
2EA,
respectively.
The
density
increases
with
increase
solvent.
dependence
nominal
diffusivity
for
temperature
follows
an
Arrhenius-like
law.
enhances
solvent,
accompanied
desorption
methanol,
accelerates
initiation
cracks.
activation
energy
shows
increasing
Hansen
solubility
distance
from
methanol.
progression
crack
length
time
a
parabolic
solvent
single-crack
is
greater
healing
zone
than
crack-free
zone;
corresponding
energies
exhibit
opposite
trend.
Increasing
fraction
functionalized
decreasing
UV-irradiation
dose
cause
barriers
that
need
to
be
overcome
preexisting
Journal of Applied Polymer Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 12, 2025
ABSTRACT
Functional
devices
are
widely
used
in
several
fields
and
thermal
orientation
is
an
important
pursuit
their
management.
Therefore,
the
preparation
of
anisotropic
thermally
conductive
functional
material
can
enhance
application
micro/nanoscale
various
fields.
In
this
paper,
micro‐
nano‐layer
technology
was
utilized
to
create
alternating
layer
structures
polymer
composites,
multilayer
composites
with
oriented
properties
were
prepared
by
combining
metal
braided
fabrics,
which
provides
a
new
path
for
innovative
applications
materials.
Through
in‐depth
analysis
heat
conduction
mechanism
model,
expression
temperature
transfer
each
inside
deduced
provide
theoretical
support
preparation.
The
results
showed
that
have
remarkable
delamination
effect,
long‐chain
molecules
exhibit
regularity
orientation.
conductivity
reached
0.261–0.606
W/m
K,
improved
2.5–6.8
times.
rise
curve
wave
pattern
more
sensitive
response,
exhibited
faster
smoother
under
point‐like
shock.
This
result
very
helpful
optimizing
effectively
improving
performance
stability
device.
