Materials & Design,
Journal Year:
2024,
Volume and Issue:
240, P. 112881 - 112881
Published: March 26, 2024
Conferring
self-healing
capability
represents
an
effective
approach
for
extending
the
lifespan
of
multifunctional
superhydrophobic
coatings.
Presently,
reported
coatings
exhibit
scratch-healing
capabilities
ranging
from
5
μm
to
40
μm.
However,
achieving
large-scale
(>100
μm)
remains
a
significant
challenge
within
this
research
domain.
In
paper,
we
introduces
design
and
fabrication
dual-layer
anti-corrosion
coating
using
polycaprolactone
(PCL),
EASTMAN
Kristalex
3085
resin
(EK),
epoxy
(EP),
1H,
2H,
2H-perfluorodecyltriethoxysilane
(PFDTES)
modified
silica
particles
via
facile
spray-coating
approach.
The
surface
morphology,
chemical
composition,
wettability,
self-cleaning,
damage-healing,
behaviors
were
thoroughly
evaluated.
Results
demonstrate
that
exhibits
across
multiple
scratch-damage
scales
(45
μm,
55
100
μm),
particularly
exhibiting
superior
ability.
Furthermore,
displays
outstanding
corrosion
resistance,
with
charge
transfer
resistance
(Rct)
increasing
by
nearly
8
orders
magnitude
compared
bare
Q235
carbon
steel
substrate.
Although
scratch-damaged
significantly
decreases,
scratch-healed
is
effectively
restored
its
initial
state,
showcasing
excellent
sustainability.
Additionally,
demonstrates
remarkable
mechanical
stability,
withstanding
90
sandpaper
abrasion
cycles
70
tape-peeling
cycles.
Polymers,
Journal Year:
2024,
Volume and Issue:
16(13), P. 1876 - 1876
Published: July 1, 2024
Surface
roughness
and
low
surface
energy
are
key
elements
for
the
artificial
preparation
of
biomimetic
superhydrophobic
materials.
However,
presence
micro-/nanostructures
corresponding
increase
in
can
light
scattering,
thereby
reducing
transparency.
Therefore,
designing
constructing
surfaces
that
combine
superhydrophobicity
with
high
transparency
has
been
a
continuous
research
focus
researchers
engineers.
In
this
study,
transparent
coating
was
constructed
on
glass
substrates
using
hydrophobic
fumed
silica
(HF-SiO2)
waterborne
polyurethane
(WPU)
as
raw
materials,
combined
simple
spray-coating
technique,
resulting
water
contact
angle
(WCA)
158.7
±
1.5°
sliding
(SA)
6.2
1.8°.
Characterization
tests
including
SEM,
EDS,
LSCM,
FTIR,
XPS
revealed
micron-scale
protrusions
nano-scale
porous
network
composite
structure
surface.
The
HF-SiO2
not
only
provided
certain
but
also
effectively
reduced
energy.
More
importantly,
exhibited
excellent
water-repellent
properties,
extremely
interfacial
adhesion,
self-cleaning
ability,
transparency,
transmittance
coated
substrate
reaching
96.1%
bare
substrate.
series
functional
characteristics
demonstrated
by
HF-SiO2@WPU
designed
study
will
play
an
important
role
various
applications
such
underwater
observation
windows,
building
facades,
automotive
glass,
goggles.
Journal of Materials Research and Technology,
Journal Year:
2024,
Volume and Issue:
30, P. 8218 - 8227
Published: May 1, 2024
To
address
the
functional
failure
caused
by
low-surface-tension
liquid
wetting
and
adhesion
in
superhydrophobic
materials,
this
study,
we
constructed
a
bilayer
coating
with
superamphiphobic
properties
using
an
epoxy
(Ep)
bonding
layer
organosilane-grafted
attapulgite
(OG-ATP)
through
spray-coating
technique.
The
prepared
exhibited
high
contact
angles
(CAs)
low
sliding
(SAs)
for
cold
water
(25°C),
hot
(85°C),
glycerol,
ethylene
glycol,
peanut
oil,
even
n-hexadecane
(CA=150.4±0.3°
SA=7±2°)
surface
tension
of
27.5
mN·m-1.
Surface
morphology
elemental
analysis
confirmed
coating's
unique
micro-nano
hierarchical
structure
energy
characteristics.
Electrochemical
impedance
spectroscopy
(EIS)
results
showed
that
charge
transfer
resistance
(Rct)
low-frequency
modulus
(|Z|0.01Hz)
were
enhanced
6-7
orders
magnitude
compared
to
bare
aluminum
alloy
substrate.
anti-corrosion
performance
remained
stable
after
5
days
3.5
wt.%
NaCl
immersion.
Additionally,
icing
experiments
droplets
at
-10°C
-15°C
revealed
significant
delay
ice
formation
on
substrate
protected
coating.
development
protective
material,
combining
superamphiphobicity,
self-cleaning,
corrosion
resistance,
anti-icing
functions,
will
provide
advanced
technological
reserves
areas
such
as
marine,
aviation,
transportation,
manufacturing.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(36), P. 48374 - 48385
Published: Aug. 31, 2024
In
this
paper,
the
preparation
of
a
transparent
superhydrophobic
composite
coating
with
thermal
insulation
function
using
antimony-doped
tin
oxide
(ATO)
nanoparticles
is
proposed,
which
has
advantages
being
mass-producible
and
low-cost.
short,
nanosilica
ATO
are
used
as
raw
materials
for
constructing
rough
structures,
coatings
obtained
by
mixing
adding
binders
after
modification
each,
then
applied
to
surface
various
substrates
spraying
obtain
heat-insulating
function.
The
specific
role
each
nanoparticle
discussed
through
comparative
experiments
that
illustrate
mechanism
two
particles
construct
structures.
achieves
unique
properties
while
possessing
excellent
superhydrophobicity
(WCA
∼163°
WSA
∼3°)
high
light
transmission
(∼70%).
Heat-shielding
have
demonstrated
effectively
reduces
room
temperature
approximately
19%
same
irradiation
time.
balanced
improvement
in
visible
transmittance,
insulation,
superhydrophobicity.
addition,
coating's
self-cleaning
properties,
mechanical
chemical
weathering
resistance,
high-temperature
anti-icing
were
verified
experiments.
