Coatings,
Journal Year:
2024,
Volume and Issue:
14(9), P. 1156 - 1156
Published: Sept. 8, 2024
Superhydrophobic
nanocomposite
coatings,
prepared
using
adhesive
and
fillers,
offer
advantages
including
ease
of
fabrication
suitability
for
large-scale
applications,
but
compared
with
other
types
artificial
superhydrophobic
surfaces,
poor
durability
still
limits
these
surfaces
from
practical
applications.
The
utilization
micro/nanoscale
particles
both
intrinsic
hydrophobicity
robust
mechanical
properties
to
prepare
coatings
should
significantly
contribute
enhanced
durability.
Herein,
rough
hydrophobic
micro/nano
hierarchical
structures
were
at
first,
fabricated
the
additional
nanoparticles.
initially
formed
a
framework
coating,
while
nanoparticles
provided
inevitable
nanoscale
structures.
A
series
tests
carried
out
validate
durability,
surface
20
wt.%
NPs
exhibited
best
performance,
withstanding
30
tape
peeling
tests,
2.47
m
sandpaper
rubbing
test
(at
pressure
5
kPa),
impact
200
g
grit
dropped
height
cm,
2
h
acidic
immersion.
These
appealing
materials
may
attract
attention
self-cleaning,
high-speed
water
resistance,
anti-icing,
anti-fouling
applications
in
industry.
Biomimetics,
Journal Year:
2023,
Volume and Issue:
8(2), P. 200 - 200
Published: May 13, 2023
Any
equipment
submerged
in
the
ocean
will
have
its
surface
attacked
by
fouling
organisms,
which
can
cause
serious
damage.
Traditional
antifouling
coatings
contain
heavy
metal
ions,
also
a
detrimental
effect
on
marine
ecological
environment
and
cannot
fulfill
needs
of
practical
applications.
As
awareness
environmental
protection
is
increasing,
new
environmentally
friendly
broad-spectrum
become
current
research
hotspot
field
antifouling.
This
review
briefly
outlines
formation
process
biofouling
mechanism.
Then,
it
describes
progress
recent
years,
including
release
coatings,
photocatalytic
natural
agents
derived
from
biomimetic
strategies,
micro/nanostructured
materials
hydrogel
coatings.
Highlights
include
mechanism
action
antimicrobial
peptides
means
preparation
modified
surfaces.
category
has
activity
friendliness
expected
to
be
type
coating
with
desirable
functions.
Finally,
future
directions
are
prospected,
intended
provide
reference
for
development
efficient,
green
Nano Materials Science,
Journal Year:
2024,
Volume and Issue:
6(4), P. 375 - 395
Published: Jan. 10, 2024
Marine
biofouling
seriously
affects
human
marine
exploitation
and
transportation
activities,
to
which
antifouling
(AF)
coatings
are
considered
be
the
most
cost-effective
solution.
Since
mid-20th
century,
beings
have
dedicated
their
efforts
on
developing
AF
with
long
cycle
high
performance,
leading
a
large
number
of
non-target
organisms'
distortion,
death
environmental
pollution.
Polydimethylsiloxane
(PDMS),
is
as
one
representative
environment-friendly
materials
thanks
its
non-toxic,
hydrophobic,
low
surface
energy
properties.
However,
PDMS
prone
mechanical
damage,
weak
adhesion
strength
substrate,
poor
static
effect,
restrict
use
in
ocean.
The
rapid
development
various
nanomaterials
provides
an
opportunity
enhance
improve
properties
coating
by
embedding
nanomaterials.
Based
our
research
background
problems
faced
laboratory,
this
article
presents
overview
current
progress
fields
composite
enhanced
different
nanomaterials,
discussion
focused
advantages
main
bottlenecks
currently
encountered
field.
Finally,
we
propose
outlook,
hoping
provide
fundamental
guidance
for
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(10), P. 13114 - 13131
Published: March 1, 2024
Extensive
utilization
in
various
settings
poses
extra
requirements
of
coatings
beyond
just
anticorrosion
properties.
Herein,
8-hydroxyquinoline
(8-HQ)
intercalated
CaAl-based
layered
double
hydroxide
(CaAl-8HQ-LDH)
was
loaded
on
reduced
GO
(rGO)
through
a
one-pot
hydrothermal
reaction,
which
employed
as
the
nanofiller
endowing
epoxy
(EP/CaAl-8HQ
LDH@rGO)
with
excellent
flame-retardancy
while
ensuring
efficient
protection
for
mild
steel.
Results
electrochemical
impedance
spectroscopy
(EIS)
demonstrated
durability
EP/CaAl-8HQ
LDH@rGO-coated
specimen,
at
lowest
frequency
(|Z|0.01Hz)
maintained
1.84
×
1010
Ω
cm2
after
120
days
immersion
3.5
wt
%
NaCl
solution.
Even
scratched
LDH@rGO
system,
only
slight
decline
|Z|0.01Hz
observed
during
180
h
exposure
to
solution,
indicating
self-healing
feature
supported
by
salt
spray
tests.
UL-94
burning
tests
revealed
V-0
rating
improved
thermostability.
Strong
physical
barrier
from
two-dimensional
rGO
and
release
8-HQ
LDH
interlayers
accounted
anticorrosive
However,
O2-concentration
dilution
charring-layer
promotion
governed
flame-retardant
behavior
nanocomposite
coating.
The
intercomponent
synergy
nanofillers
achieved
this
work
may
provide
useful
reference
designing
multifunctional
coatings.
Marine
biofouling
and
corrosion
have
become
the
main
problems
affecting
development
of
marine
industry.
Silicone-based
coatings
been
widely
used
for
antifouling
anticorrosion
due
to
their
low
surface
energy.
However,
poor
adhesion
mechanical
stability
these
materials
limit
application
in
complex
environments.
In
this
work,
we
presented
a
coating
named
POSS-DMA@PDMS-TCM
through
photoinitiated
thiol-ene
click
reaction
combined
with
(mercaptopropyl)
methylsiloxane
dimethylsiloxane
(PDMS-SH),
dopamine
methacrylamide
(DMA),
sulfhydryl-functionalized
organosiloxanes
(POSS-(SH)8),
N-(2,4,6-trichlorophenyl)
maleimide
(TCM).
The
exhibited
strong
bonding
ability
both
air
(2.17
MPa)
underwater
(2.11
when
DMA
content
was
3
wt
%.
high
antibacterial
(98.1%
Staphylococcus
aureus
99.5%
Escherichia
coli)
antidiatom
(94.5%)
properties
also
confirmed.
Moreover,
show
excellent
abilities
120-day
field
tests,
reducing
fouling
by
65.5%
comparison
blank
group.
displayed
superior
performance
Ecorr
values
-0.055
V,
Icorr
7.67
×
10-6
,
Rp
3.10
105
Ω
Cu,
which
benefited
from
chelating
effect
liquid
repellency.
This
study
provides
novel
strategy
high-quality
coatings.
