Thermal Stability and Combustion Efficiency of Menouna Coal
Ahmed Yacine Acila,
Mahmoud Eid,
Aleksey valerivich
и другие.
Опубликована: Янв. 1, 2025
Язык: Английский
Boosting Flame Retardancy of Polypropylene/Calcium Carbonate Composites with Inorganic Flame Retardants
Materials,
Год журнала:
2024,
Номер
17(18), С. 4553 - 4553
Опубликована: Сен. 16, 2024
This
study
investigates
the
effects
of
inorganic
flame
retardants,
zinc
borate,
and
magnesium
hydroxide,
on
thermal,
morphological,
retardancy,
mechanical
properties
polypropylene
(PP)/calcium
carbonate
composites
for
potential
construction
industry
applications.
Polypropylene/calcium
(50
wt.%)
containing
5
10
wt.%
retardants
were
prepared
using
a
batch
mixer,
followed
by
compression
moulding.
The
results
demonstrated
enhanced
thermal
stability,
with
highest
char
residue
reaching
47.2%
polypropylene/calcium
carbonate/zinc
borate
(10
wt.%)/magnesium
hydroxide
composite,
notably
strong
outcome.
Additionally,
composite
exhibited
an
elevated
limited
oxygen
index
(LOI)
29.4%,
indicating
synergistic
effect
between
hydroxide.
proposed
retardancy
mechanism
suggests
that
flammability
performance
is
driven
interaction
within
matrix.
Magnesium
contributes
to
smoke
suppression
releasing
water,
while
forms
protective
glassy
foam
covers
burning
surface,
promoting
formation
acting
as
physical
barrier
heat
transmission
fire
spread.
Scanning
electron
microscopy
confirmed
good
dispersion
additives
alongside
calcium
polymer
Despite
addition
up
maintained
high-notched
impact
strength.
Язык: Английский
Synthesis, mechanical, thermal, and fire properties of poly(vinyl chloride) modified with a new flame retardant based on zeolite and urea cyanurate
Journal of Vinyl and Additive Technology,
Год журнала:
2024,
Номер
unknown
Опубликована: Авг. 20, 2024
Abstract
In
the
article,
polyvinyl
chloride/zeolite
4A/urea
cyanurate
composites
(P/UCA‐Zlt)
were
designed
and
prepared
by
a
melt
intercalation
method
suitable
for
manufacture
of
rigid
products.
To
determine
structure
properties
this
flame‐retardant
system,
thermal,
flame
retardancy,
mechanical
behavior
tested
Fourier
transform
infrared
analysis
(FTIR)
spectroscopy,
field
emission
scanning
electron
microscopy
(FE‐SEM),
thermogravimetric
(TGA/DTG),
thermal
stability
test,
cone
calorimetric
test
(CCT),
tensile
analysis.
Results
showed
that
composites,
based
on
UCA‐Zlt,
exhibited
better
HCl
scavenger
properties,
improved
reduced
level
degradation
compared
with
pure
chloride
(PVC)
at
optimum
modification
UCA
(3
wt%)–Zlt
(1%).
TGA,
indicated
against
heat
influences
PVC
was
increased
adding
UCA–Zlt
which
evident
decomposition
temperature.
The
CCT
results
properties.
matrix
time
as
value
1
wt%.
Moreover,
strength
composite
containing
(1%)
19.8%
those
neat
PVC.
Highlights
A
strategy
to
design
an
FR‐additive
from
zeolite
urea
Introduce
guide
formulation.
Effects
retardancy
Introducing
optimal
FR‐PVC
system
Язык: Английский