Macromolecular Rapid Communications,
Год журнала:
2023,
Номер
44(12)
Опубликована: Апрель 21, 2023
Two
kinds
of
polyaniline
coupled
graphitized
carbon
nitride
nanosheets
doped
with
different
organic
phosphoric
acids
(CP@PA,
phytic
acid;
CP@NP,
amino
trimethyl
phosphonic
acid)
are
developed
by
in-situ
polymerization.
According
to
the
analysis
section
morphology
and
element
distribution
epoxy
resin
(EP)
composites,
although
CP@PA
CP@NP
show
completely
morphology,
they
can
significantly
enhance
dispersion
in
EP.
Moreover,
oxidation
states
phosphorus
contained
lead
varying
effects
on
fire
safety
The
flame
retardancy
Index
(FRI)
is
a
dimensionless
index
evaluate
performance
retardants.
When
used
as
retardant,
(FRI
=
3.22)
better
than
1.29)
especially
suppressing
thermal
hazards.
As
synergist
intumescent
retardants
(IFR),
26.12)
most
effective
improving
comprehensive
property
EP
achieves
an
"Excellent"
rating.
Therefore,
two
flame-retardant
mechanisms
summarized
analyzing
combustion
behavior
changes
condensed
phase.
In
summary,
this
research
may
be
helpful
design
nano
synergies
for
IFR
systems.
Materials & Design,
Год журнала:
2022,
Номер
221, С. 110925 - 110925
Опубликована: Июль 8, 2022
The
nitrogen-phosphorus
flame-retardant
coating
was
formed
on
the
surface
of
cotton
fabrics
via
strong
electrostatic
attraction
and
hydrogen
bonds
with
layer-by-layer
protein
extracted
from
fishery
waste
fish
scales
phytic
acid
(PA)
derived
plant
seeds.
flame
retardant
property
coated
demonstrated
a
significant
improvement
limiting
oxygen
index
31.1%,
meeting
requirements
commercial
fire-protection
suit.
Especially,
noteworthy,
due
to
synergistic
smoke
suppression
effect
scale
acid,
total
emission
greatly
reduced
by
139%.
Meanwhile,
charring
treated
FSP
PA
significantly
enhanced.
Scanning
electron
microscopy
Raman
results
residual
char
further
reveal
that
treatment
combined
facilitates
formation
dense
regular
graphitized
residue
during
combustion
or
under
high
temperature.
This
waste-sourced,
biomass-derived
paves
new
way
towards
sustainable
has
great
significance
in
civil,
military,
industrial
fields.
