Proceedings of the Institution of Mechanical Engineers Part D Journal of Automobile Engineering,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 21, 2024
Friction
materials
are
crucial
in
engineering,
particularly
the
automotive
and
industrial
sectors
where
they
extensively
used
brake
systems.
Lubricants
essential
these
pad
because
provide
friction
stability
reduce
wear,
especially
at
high
temperatures.
Polydimethylsiloxane
(PDMS),
known
for
its
thermal
low
volatility,
is
a
lubricant
pads.
However,
effect
of
PDMS
viscosity
on
tribological
behaviour
pads
their
overall
braking
effectiveness
not
well
understood.
This
study
examines
properties
eco-friendly
reinforced
with
benzoyl-treated
Pseudoxytenanthera
stocksii
(P.
stocksii)
bamboo
rhizomes.
Brake
were
fabricated
varying
viscosities
subjected
to
detailed
physical,
chemical,
mechanical,
testing.
Tribological
tests
conducted
using
CHASE
tribometer
under
controlled
conditions,
following
SAE
J661a
standards.
The
results
reveal
significant
relationship
between
Specifically,
low-viscosity
emerged
as
highly
effective
additive,
demonstrating
superior
performance
compared
higher-viscosity
variants.
Conversely,
improved
lubrication,
leading
lower
coefficient
reduced
wear
rates.
research
underscores
importance
PDMS,
form,
enhancing
composites
formulations.
Journal of Vinyl and Additive Technology,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 21, 2025
Abstract
This
study
investigates
the
incorporation
of
date
palm
fibers,
an
abundant
agricultural
waste,
into
polyvinyl
chloride
(PVC)
composites
at
a
25%
fiber
weight
ratio.
Alkali
treatment,
potassium
permanganate
oxidation,
and
silane
coupling
were
applied
to
enhance
fiber‐matrix
adhesion.
The
fabricated
using
hot
pressing
method.
results
revealed
significant
improvements
in
mechanical,
thermal,
moisture
resistance
properties
for
treated
fibers
compared
untreated
ones.
Potassium
treatment
achieved
highest
tensile
strength
9.57
MPa,
while
alkali
provided
Young's
modulus
about
304.5
MPa
thermal
stability.
Silane‐treated
exhibited
lowest
water
absorption.
X‐ray
diffraction
analysis
showed
that
chemical
treatments
improved
crystallinity
index
(CI)
with
increasing
CI
from
28.6%
40.5%,
raising
it
37.5%
41.8%,
respectively.
These
findings
highlight
potential
as
sustainable
alternatives
industrial
applications
such
construction
automotive,
aligning
both
economic
environmental
objectives.
Highlights
Enhanced
PVC
fibers.
Alkali,
permanganate,
improve
mechanical
properties.
Permanganate
achieves
strength.
Reduced
absorption
stability
composites.
Sustainable
application
waste
materials.
Proceedings of the Institution of Mechanical Engineers Part C Journal of Mechanical Engineering Science,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 28, 2025
To
explore
the
anti-wear
mechanism
of
drum
brakes
and
improve
their
wear
resistance,
this
paper
investigates
performance
brake
drums
friction
pads
proposes
a
biomimetic
surface
design
method
for
drums.
Biomimetic
samples
with
point,
striped
grid-shaped
unit
structures
are
designed,
contact
stress
mechanical
models
between
units
established.
The
influence
different
shapes
on
is
analysed
theoretically.
Semi-metallic,
organic
non-asbestos
(NAO),
ceramic
pad
tested
in
reciprocating
tests
against
three
effect
simulated
using
Abaqus
software.
study
examines
impact
shape,
arrangement,
spacing,
height,
angle
material
resistance
Striped
produced
thermal
fatigue
bench
semi-metallic
to
verify
shape
parameters
test
results
show
that
have
significantly
better
than
untreated
drum’s
life
increases
by
38%,
self-wear
reduced
62%.
When
vehicle
speed
60
km/h,
braking
torque
5%,
grid
9.5%.
Both
improved.
ACS Omega,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 12, 2025
Plastics
are
widely
used
in
manufacturing
various
products
due
to
their
durability,
strength,
and
low
cost;
however,
they
originate
from
nonrenewable
sources.
The
growing
interest
developing
environmentally
friendly
materials
has
driven
research
toward
the
incorporation
of
natural
fibers
recycled
plastics.
In
Ecuador,
Guadua
Angustifolia
Kunth
(GaK)
bamboo
is
usually
as
furniture
construction
materials.
Therefore,
this
work
aims
reevaluate
traditional
use
GaK
fibers,
exploring
potentiality
using
chemically
treated
reinforcement
material
for
thermoplastic
composites.
This
study
presents
development
composite
based
on
high-density
polyethylene
(HDPE),
HDPE
(rHDPE),
an
experimental
design
that
includes
performing
tension,
flexural,
impact
tests
obtain
optimal
formulation.
composites
were
characterized
optical
microscopy,
SEM,
FTIR,
DSC,
TGA,
EDX,
followed
by
a
life-cycle
assessment
(LCA).
SEM
images
revealed
morphological
changes
while
TGA
indicated
significant
mass
loss
degradation
above
200
°C
all
DSC
showed
melting
temperature
approximately
133
samples.
These
results
there
will
not
be
fiber
during
processing.
highest
maximum
tensile
strength
achieved
among
optimization
samples
was
18.69
MPa.
All
increase
Young's
modulus,
with
enhancement
up
204%
compared
pure
HDPE,
albeit
marked
reduction
elongation
percentage.
flexural
increased
17.84%,
but
decreased
83%
fiber-matrix
compatibility
ductility
composite,
which
allows
it
absorb
less
energy
before
fracture.
formulation
had
10%
cellulose,
50%
40%
rHDPE,
exhibited
17.62
MPa,
obtained
mixture
regression.
LCA
demonstrated
rHDPE-based
significantly
lower
environmental
virgin
HDPE.
Using
rHDPE
critical
reducing
footprint
composites,
incorporating
further
decreases
GWP
emissions
enhancing
certain
properties.
Polymer Composites,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 13, 2025
Abstract
This
study
aims
to
synthesize
a
novel
biomass‐based
silane
coupling
agent
(SCA)
and
apply
it
epoxy/silica
composites
(ESCs)
for
performance
evaluation
in
comparison
with
commercial
SCAs.
The
SCA
was
prepared
by
epoxidation
of
cinnamyl
alcohol
(CA)
extracted
from
cinnamon
leaves,
followed
thiol‐ene
reaction
(3‐mercaptopropyl)trimethoxysilane
(MPTS).
chemical
structure
the
synthesized
characterized
using
Fourier
transform
infrared
spectroscopy
proton
nuclear
magnetic
resonance.
applied
ESCs,
its
compared
that
ESCs
utilizing
three
different
experimental
results
showed
viscosity
ESC
mixtures
synthetic
decreased
19.6%.
Additionally,
observations
fractured
surface
revealed
participated
curing
system
epoxy
resin,
enhancing
interfacial
interactions
causing
silica
particles
be
covered
making
them
no
longer
visible.
enhanced
interaction,
driven
participation
system,
improved
cross‐linking
density
contributing
an
increase
glass
transition
temperature
(
T
g
),
temperatures
corresponding
5%
weight
loss
tensile
strength
18.5
°C,
10.8
49.7%,
respectively.
These
support
compatibility
bonding
between
resin
demonstrate
potential
as
replacement
Highlights
A
(CA‐SCA)
ESC.
CA‐SCA
confirmed
via
FT‐IR
1
HNMR.
reaction,
silica.
has
thermal
mechanical
properties
