The
large-scale
preparation
of
durable
superhydrophobic
coatings
on
steel
substrates
remains
a
formidable
challenge.
In
this
study,
robust
and
environmentally
friendly
DA/TiO2
composite
coating
was
designed
prepared
through
chelation
multiple
covalent
bonding
between
steel,
phytic
acid,
Kh-560,
diatomaceous
earth
by
two-step
spraying
method.
has
water
contact
angle
up
to
158°
rolling
as
low
2°.
Regardless
whether
the
is
worn
sandpaper
for
50
cycles
or
droplets
impact
14
hours,
it
still
retains
excellent
superhydrophobicity.
It
worth
noting
that
oil-water
separation
capacity
mesh
high
97%.
variety
contaminated
environments,
have
static
dynamic
antifouling
properties,
well
self-cleaning
properties.
Furthermore,
effectively
resistant
ultraviolet
radiation
temperatures
certain
acid
alkali
resistance.
This
work
provides
new
ideas
in
field
metal
protection
multifunctional
materials.
Abstract
Underwater
superhydrophobic
surfaces
stand
as
a
promising
frontier
in
materials
science,
holding
immense
potential
for
applications
underwater
infrastructure,
vehicles,
pipelines,
robots,
and
sensors.
Despite
this
potential,
widespread
commercial
adoption
of
these
faces
limitations,
primarily
rooted
challenges
related
to
material
durability
the
stability
air
plastron
during
prolonged
submersion.
Factors
such
pressure,
flow,
temperature
further
complicate
operational
viability
technology.
This
comprehensive
review
navigates
evolving
landscape
technology,
providing
deep
dive
into
introduction,
advancements,
innovations
design,
fabrication,
testing
techniques.
Recent
breakthroughs
nanotechnology,
magnetic‐responsive
coatings,
additive
manufacturing,
machine
learning
are
highlighted,
showcasing
diverse
avenues
progress.
Notable
research
endeavors
concentrate
on
enhancing
longevity
plastrons,
fundamental
element
governing
behavior.
The
explores
multifaceted
coatings
environment,
encompassing
areas
drag
reduction,
anti‐biofouling,
corrosion
resistance.
A
critical
examination
offerings
coating
offers
current
perspective
available
solutions.
In
conclusion,
provides
valuable
insights
forward‐looking
recommendations
propel
field
superhydrophobicity
toward
new
dimensions
innovation
practical
utility.
Abstract
The
self‐healing
ability
of
superhydrophobic
surfaces
in
air
has
attracted
tremendous
additions
recent
years.
Once
the
surface
is
damaged
underwater,
water
seeps
into
gaps
among
micro/nano
structures.
film
diffuses
and
eventually
disappears
during
immersion
without
actively
replenishing
gas,
which
results
impossible
self‐healing.
Here,
an
underwater
coating
with
synergetic
effect
hydrogen
bonds
self‐formed
bubbles
via
spraying
method
fabricated.
movement
prepared
polyurethane
enables
microstructures
to
reconstruct
at
room
temperature
effervescent
materials
replenish
gas
before
completely
self‐healing,
achieving
property
coating.
Moreover,
hydrophilic
material
sprayed
along
unmodified
micron‐scaled
particles
because
modified
nano‐scale
are
key
factors
for
realization
An
stable
pressure
resistance
(4.9
kPa)
demonstrated.
This
also
shows
excellent
drag
reduction,
anti‐icing,
anti‐corrosion
properties.
facile
scalable
offers
a
new
route
that
executes
recovery.
ACS Sustainable Chemistry & Engineering,
Год журнала:
2024,
Номер
12(18), С. 7147 - 7157
Опубликована: Апрель 23, 2024
Endowing
superhydrophobic
coatings
(SHCs)
with
photothermal
properties
has
become
a
promising
approach
to
overcoming
the
icephobic
performance
failure
of
SHCs
in
low-temperature
and
high-humidity
environments.
However,
reported
rely
on
petroleum-based
resources
are
nonrecyclable,
which
is
not
conducive
resource
conservation
environmental
protection.
In
addition,
they
also
prone
external
damage
that
shortens
their
service
life.
Herein,
fully
biobased
epoxy
vitrimer
self-healing
closed-recyclability
was
prepared
by
curing
epoxidized
soybean
oil
(ESO)
imine-containing
agent
derived
from
1,10-diaminodecane
vanillin.
Subsequently,
multiwalled
carbon
nanotubes
(MWCNTs)
were
planted
surface
ESO-based
create
coating,
taking
advantage
dissolution
swelling
behavior
solvents.
MWCNTs
can
spontaneously
form
micro/nanostructures
due
planting
method,
endowing
coating
excellent
anti/deicing
(ice
delaying
time:
622
s,
ice
adhesion
strength:
11.2
kPa)
deicing
(remove
frost
or
within
30
s).
More
importantly,
possessed
ability
for
thanks
effect
bond
exchangeability
vitrimer,
beneficial
achieving
remote
precise
self-healing.
At
same
time,
dynamic
imine
bonds
give
closed-loop
recycling.
This
study
guiding
significance
sustainable
development
recycling
composite
coatings.
The
influence
of
a
rough
structure
on
wettability
has
been
widely
studied,
but
the
quantitative
relationship
between
surface
and
with
same
roughness
largely
ignored.
In
this
work,
model
describing
contact
angle
surfaces
is
proposed
based
fractal
parameters.
Hydrophilic
or
hydrophobic
multiscale
aluminum
alloy
random
were
prepared
by
chemical
etching
different
solutions.
dimension
scale
parameter
structures
are
determined
Weierstras–Mandelbrot
function.
influences
parameters
studied
using
extreme
variance
method.
addition,
theoretical
angles
calculated
Wenzel
Cassie-Basic
models
compared
measured
results.
Although
more
suitable
for
chemical-treated
structures,
there
gap
predicted
value
as
it
ignores
air
gaps
liquid
surface.
coefficients
modified
verified
according
to
experimental
For
error
values
about
10%.
