Langmuir,
Journal Year:
2023,
Volume and Issue:
39(43), P. 15391 - 15400
Published: Oct. 19, 2023
Onion-like
carbon
(OLC)
is
a
kind
of
material
with
graphene-like
structure
and
large
interlayer
spacing,
favorable
to
good
lubricating
performance.
Herein,
facile
method
presented
for
the
preparation
functionalized
OLC
nanoparticles
from
candle
soot
surface
modification.
The
are
collected
combustion
burning
via
simple
heat
treatment,
then
zwitterionic
polymer
(polyethylenimine-quaternized
derivative,
PEIS)
can
self-assemble
onto
epigallocatechin
gallate
Michael
addition
Schiff-base
reaction,
thus
obtaining
PEIS-functionalized
(PEIS@OLC).
grafting
PEIS
endows
hydrophilic
performance,
so
as-obtained
PEIS@OLC
exhibits
outstanding
dispersion
property
as
water-based
lubricant
additive.
Compared
pure
water,
average
coefficient
friction
decreases
0.110
0.512,
corresponding
wear
volume
reduced
by
61.02%
1.5
wt
%
addition.
improved
mainly
due
synergetic
effect
protective
film
induced
tribochemical
reaction
hydration
PEIS.
Besides,
could
also
display
nanoscale
rolling
repairing
effects
at
contact
interface,
resulting
in
reduction
wear.
Journal of Materials Chemistry C,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
This
review
explores
2D
nanomaterials
as
lubricant
additives,
focusing
on
surface
modification,
composite
methods,
and
lubrication
mechanisms.
Key
challenges
future
research
directions
are
discussed.
Friction,
Journal Year:
2024,
Volume and Issue:
12(8), P. 1728 - 1740
Published: May 1, 2024
Abstract
Herein,
we
have
prepared
SiO
2
particles
uploaded
MXene
nanosheets
via
in-situ
hydrolysis
of
tetraetholothosilicate.
Due
to
the
large
number
groups
at
edges
MXene,
grows
first,
forming
MXene@SiO
composites
with
a
unique
core-rim
structure.
The
tribological
properties
as
lubricating
additive
in
500
SN
are
evaluated
by
SRV-5.
results
show
that
can
reduce
friction
coefficient
from
0.572
0.108,
wear
volume
is
reduced
73.7%,
and
load
capacity
increased
800
N.
superior
lubricity
attributed
synergistic
effect
.
rolling
caused
not
only
improves
bearing
but
also
increases
interlayer
distance
avoiding
accumulation
making
it
more
prone
slip.
adsorbed
on
interface
form
physical
adsorption
film
isolate
pair.
In
addition,
high
temperature
induce
tribochemical
reaction
chemical
protection
during
process.
Ultimately,
presence
these
protective
films
having
good
properties.
