Journal of Applied Polymer Science,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 10, 2025
ABSTRACT
Developing
epoxy
resin
(EP)
with
satisfactory
comprehensive
properties
has
significant
prospects
in
high‐tech
industries,
but
achieving
this
goal
remains
a
challenge.
In
work,
macromolecular
flame
retardant
(PSi)
was
synthesized
using
vanillin,
phenylphosphonic
dichloride
(PPDC),
9,10‐dihydro‐9‐oxa‐10‐phospha‐phenanthrene
10‐oxide
(DOPO),
and
1,3‐bis(aminopropyl)tetramethyldisiloxane
(DAPTMS).
PSi
subsequently
utilized
to
fabricate
high‐performance
EP.
The
EP
2
wt%
(i.e.,
EP/PSi
)
exhibits
flame‐retardant
performance.
It
achieves
V‐0
rating
the
Underwriters
Laboratories‐94
(UL‐94)
test
limiting
oxygen
index
(LOI)
of
29.2%.
peak
heat
release
rate
(PHRR)
total
(THR)
decreased
by
~14.7%
~9.6%,
respectively.
Compared
unmodified
EP,
tensile
strength
impact
increase
~9.0%
~67.5%,
respectively,
while
maintaining
high
glass
transition
temperature
(
T
g
).
Moreover,
incorporation
significantly
enhances
UV‐shielding
without
sacrificing
its
transparency.
This
work
provides
an
integrated
strategy
for
developing
efficient
vanillin‐based
retardant.
fabricated
mechanical
robustness,
transparency,
broad
industrial
applications.
Journal of Applied Polymer Science,
Journal Year:
2024,
Volume and Issue:
141(17)
Published: Feb. 3, 2024
Abstract
Imparting
good
flame
retardancy
and
mechanical
properties
to
epoxy
resin
(EP),
while
pursuing
the
sustainable
safe
application
of
EP,
we
synthesized
a
novel
reactive
phosphorus/nitrogen
retardant
for
biomass
through
nucleophilic
addition
reaction,
which
contains
flexible
ether
bonds
rigid
aromatic
ring
structure
(DVD).
Owing
cooperative
effect
aryl
diamine,
phosphorus
phenanthrene,
vanillin,
DVD
exhibited
excellent
retardancy.
EP/DVD‐1
(0.4
wt%
content)
achieved
UL‐94
V‐0
rating,
with
an
improvement
in
limiting
oxygen
index
value
from
26.5%
(pure
EP)
32.5%.
In
CCT,
modified
EP
showed
44.5%
reduction
peak
heat
release
rate
(PHRR)
38.0%
total
compared
pure
EPs.
And
(FREP)
still
had
transparency
after
DVD,
indicated
nice
compatibility
between
andEP.
What
was
noteworthiness
that
at
high
levels
addition,
improved
EP.
These
results
demonstrate
is
multifunctional
bio‐based
broad
prospects
field
material
modification.
