In
the
past
years,
a
great
deal
of
attention
has
been
paid
to
passive
cooling
envelope
materials
or
smart
windows
cope
with
increase
in
building
energy
consumption
due
global
warming.
However,
combining
curtains
could
enable
on-demand
thermal
management
based
on
its
dynamically
adjustable
characteristics.
Herein,
superhydrophobic
cotton
fabric
low
conductivity
(0.0342
W/mK),
high
solar
reflectivity
(0.9280)
and
infrared
emissivity
(0.9698)
was
obtained
by
wrapping
porous
SiO2/poly(vinylidene
fluoride-hexafluoropropylene)
composite
coating
via
solvent
exchange
phase
separation
sanding.
The
fabrics
realized
an
average
10.3℃
during
daytime
showed
impressive
performance
relative
pristine
cotton.
Notably,
demonstrated
superior
nighttime
insulation
outdoor
testing
simulations
compared
commercial
curtains.
Therefore,
as
allow
for
reducing
broadening
practical
application
radiative
materials.
Langmuir,
Год журнала:
2024,
Номер
41(1), С. 1068 - 1077
Опубликована: Дек. 31, 2024
The
increasing
demand
for
energy
in
cooling
systems
due
to
global
warming
presents
a
significant
challenge.
Conventional
air-conditioning
methods
exacerbate
climate
change
by
contributing
heightened
carbon
emissions.
Glass
facades,
renowned
modern
architecture
their
versatility
and
aesthetic
appeal,
inadvertently
trap
solar
radiation,
resulting
heat
buildup
the
greenhouse
effect.
To
tackle
these
issues,
we
utilized
roll-to-flat
light-curing
technology
develop
hydrogel
coating
on
glass
substrate
with
assistance
of
ultraviolet
(UV)
adhesive.
This
water-contained
selectively
absorbs
infrared
light
while
allowing
visible
transmission,
thereby
maintaining
transparency.
Leveraging
absorption
partial
as
active
liquid-to-gaseous
phase
enthalpy
water
passive
cooling,
significantly
reduces
room
temperatures
up
8.1
°C
under
0.75
sun
irradiation,
corresponding
total
power
about
192.6
W
m–2.
study
introduces
novel
approach
transparent
energy-saving
buildings,
added
potential
resource
recycling.
Nanomaterials,
Год журнала:
2024,
Номер
15(1), С. 12 - 12
Опубликована: Дек. 25, 2024
Superhydrophobic
surfaces,
known
for
their
exceptional
water-repellent
properties
with
contact
angles
exceeding
150°,
are
highly
regarded
effectiveness
in
applications
including
self-cleaning,
antifouling,
and
ice
prevention.
However,
the
structural
fragility
weak
durability
of
conventional
coating
limit
long-term
use.
In
this
research,
a
new
approach
is
proposed
fabrication
long-lasting
superhydrophobic
surfaces
using
ethyl
cyanoacrylate
(ECA)
primer.
The
application
primer
creates
curing
rate
disparity
between
surface
bulk
ECA
layer,
resulting
formation
wrinkled
microstructures
essential
achieving
superhydrophobicity.
fabricated
were
further
functionalized
through
plasma
treatment
hydrophobic
silane
(OTS)
coating,
enhancing
properties.
This
straightforward
scalable
method
produced
excellent
superhydrophobicity
robust
adhesion
to
substrates.
Durability
tests,
roller
abrasion
microscratch
evaluations,
indicated
that
structure
strong
substrate
contributed
sustained
performance
even
under
mechanical
stress.
Additionally,
assessed
nanoindentation,
demonstrating
enhanced
resistance
physical
damage
compared
coatings.
study
highlights
potential
ECA-based
requiring
stability,
such
as
architectural
coatings,
automotive
exteriors,
medical
devices.
offers
promising
solution
limitations
existing
technologies
opens
avenues
research
into
wear-resistant
environmentally
resilient
In
the
past
years,
a
great
deal
of
attention
has
been
paid
to
passive
cooling
envelope
materials
or
smart
windows
cope
with
increase
in
building
energy
consumption
due
global
warming.
However,
combining
curtains
could
enable
on-demand
thermal
management
based
on
its
dynamically
adjustable
characteristics.
Herein,
superhydrophobic
cotton
fabric
low
conductivity
(0.0342
W/mK),
high
solar
reflectivity
(0.9280)
and
infrared
emissivity
(0.9698)
was
obtained
by
wrapping
porous
SiO2/poly(vinylidene
fluoride-hexafluoropropylene)
composite
coating
via
solvent
exchange
phase
separation
sanding.
The
fabrics
realized
an
average
10.3℃
during
daytime
showed
impressive
performance
relative
pristine
cotton.
Notably,
demonstrated
superior
nighttime
insulation
outdoor
testing
simulations
compared
commercial
curtains.
Therefore,
as
allow
for
reducing
broadening
practical
application
radiative
materials.
