Study on Self‐Healing Technology of Epoxy Resin for Insulator Core Rods
Journal of Applied Polymer Science,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 24, 2025
ABSTRACT
Epoxy
resin
insulation
materials
are
prone
to
micro‐damage
such
as
scratches
and
electrical
treeing,
which
can
lead
a
decline
in
performance
threaten
the
safe
operation
of
entire
system.
Microcapsule‐based
self‐healing
technology
is
one
most
promising
solutions
address
issues
epoxy
resin.
However,
research
has
shown
that
when
microcapsule
doping
concentration
exceeds
3
wt%,
mechanical
strength
decreases
significantly,
while
too
low
affects
healing
efficiency.
This
paper
focuses
on
used
insulator
core
rods
addresses
contradiction
between
“low
introduction”
“high
efficiency.”
work
synthesizes
magnetically
targeted
UV‐sensitive
microcapsules
suitable
for
rods.
During
curing
process
resin,
be
directionally
guided
by
magnetic
field
distribute
areas
damage,
thereby
ensuring
repair
efficiency
reducing
quantity
used.
The
shells
possess
UV‐shielding
properties,
stability
internal
material.
When
damage
propagates
capsules,
material
flows
out
cures
under
UV
light,
completing
damage.
Additionally,
larger‐scale
rod
specimens
were
fabricated,
demonstrating
excellent
against
scratch
treeing
In
comparison,
composite
without
exhibited
reduction
tensile
breakdown
69.06%
74.77%,
respectively,
after
Post‐repair,
recovery
rate
reached
91.6%,
achieved
90.4%.
Language: Английский
The Effect of Capsulated Linseed Oil‐Nano Zirconia on the Tribological Properties and Corrosion Resistance of the Epoxy Coatings
Polymers for Advanced Technologies,
Journal Year:
2025,
Volume and Issue:
36(3)
Published: March 1, 2025
ABSTRACT
Utilizing
self‐healing
polymer
coatings
to
prevent
the
corrosion
and
degradation
of
steel
surfaces
is
crucial.
These
can
repair
damage
by
releasing
healing
agents.
This
research
focuses
on
self‐lubricating
behaviors
these
smart
polymers.
To
do
so,
different
contents
ZrO
2
nanoparticles
(0,
1,
3,
5
wt%)
were
dispersed
in
linseed
oil
as
lubricant
Then,
agents
capsulated
a
polyurea‐formaldehyde
shell
through
an
situ
polymerization
method.
In
following,
uniform
wt%
microcapsules
containing
epoxy
coating
for
application
surfaces.
The
tribological
(pin‐on‐disk)
(polarization
method)
tests
used
characterizing
lubrication
behavior
assessing
features
coatings.
Results
revealed
that
higher
amounts
led
increase
size
during
synthesis.
Notably,
with
lower
concentration
exhibited
significant
improvements
wear
resistance,
best
enhancement
observed
at
1
wt%.
optimal
resulted
80%
reduction
friction
coefficient
88%
decline
rate.
demonstrated
effective
properties,
successfully
addressing
microcracks
boosting
resistance.
Specifically,
3
markedly
enhanced
So
that,
polarization
test
indicated
nearly
96%
current
density
when
used.
contrast,
proved
be
less
due
challenges
related
uneven
distribution
increased
viscosity
oil.
Language: Английский
Thermochromic insulation composites for prewarning of thermal faults in electrical equipment
Journal of Applied Polymer Science,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 2, 2024
Abstract
Thermal
faults
occur
in
the
continuous
operation
of
electrical
equipment.
This
poses
a
threat
to
stable
power
systems.
However,
existing
detection
methods
do
not
apply
large‐scale
temperature
measurement
scenarios
due
high
cost
and
poor
stability.
To
solve
above
problems,
reversible
thermochromic
microcapsule
is
proposed
this
work.
Silicone
rubber
composite
can
be
endowed
with
thermal
sensing
capability
by
doping
an
appropriate
amount
microcapsules
inside
silicone
matrix.
The
test
results
showed
that
color
obtained
composites
changed
sensitively
change
external
temperature.
material
undergoes
sudden
at
about
50°C
achieving
from
blue
colorless.
difference
before
after
up
37.24.
In
addition,
shows
exponential
decay
trend
time.
When
dopant
concentration
1.5
wt%,
excellent
color‐changing
performance,
insulation
strength
increased
6.92%
compared
pure
rubber.
Meanwhile,
water
contact
angle
115.3°,
which
proves
it
has
good
hydrophobicity.
Notably,
also
weathering
properties
aging
experiments.
work
realize
visualization
local
overheating
state
equipment,
provides
new
idea
for
application
fault
prewarning
Language: Английский