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.
Materials,
Journal Year:
2024,
Volume and Issue:
17(1), P. 259 - 259
Published: Jan. 3, 2024
The
objective
of
this
study
was
to
compare
the
selected
mechanical
properties
epoxy
compounds
based
on
an
unmodified
resin
with
those
containing
antiseptic
as
a
modifying
agent.
Experiments
were
carried
out
twelve
made
bisphenol
A
(BPA)
basic
epoxide
amount
0.48-0.51
mol/100
g.
Three
curing
agents
used:
one
polyamide
(a
polyaminoamide
agent)
and
two
amines
(one
adduct
aliphatic
amine
aromatic
glycidyl
ether,
other
cycloaliphatic
amine).
modified
by
adding
in
form
powdered
boric
acid
(H3BO3)
three
amounts:
0.5
g,
1.0
1.5
cured
subjected
compressive
strength
testing
microscopic
examination.
experimental
results
showed
that
(triethylenetetramine)
ether
agent,
i.e.,
E5/ET/100:18,
had
highest
all
tested
compounds,
value
119
MPa
obtained
for
compound
addition
g
acid.
acquired
and,
most
cases,
exhibited
higher
than
(not
lower
specified
manufacturer
compounds).
Journal of Applied Polymer Science,
Journal Year:
2023,
Volume and Issue:
140(24)
Published: April 14, 2023
Abstract
Benzoxazine
resins
are
suffering
from
high
curing
temperature,
low
crosslinking
density,
and
poor
toughness,
which
hampers
their
broad
applications.
The
introduction
of
melamine
during
synthesis
has
been
shown
useful
in
improving
these
properties,
but
the
dielectric
property
was
deteriorated
heavily.
Epoxy
show
higher
density
better
toughness
thermal
properties
relatively
poor.
Herein,
based‐benzoxazine
MBF
copolymerized
with
epoxy
resin
E51
this
work
order
to
improve
properties.
reactivity,
polymerization
mechanism
comprehensive
such
as
thermal,
mechanical
were
systematically
verified.
It
is
found
that
abundant
active
functional
groups
amino
phenolic
could
catalyze
copolymerize
form
uniform
copolymers
poly(MBF‐E)
at
various
proportions.
With
increasing
resins,
more
polar
consumed,
thus
polarity
water
absorption
decreased.
Additionally,
constant
decreased
3.67
for
poly(MBF)
2.94
poly(MBF‐60E).
Meanwhile,
highest
increasement
tensile
strength
elongation
break
value
reached
130%
70%,
respectively,
may
be
caused
by
flexible
ether
bond
formed.
