FirePhysChem,
Journal Year:
2022,
Volume and Issue:
2(1), P. 36 - 49
Published: March 1, 2022
In
the
present
work,
an
attempt
has
been
made
to
unveil
effect
of
micro-
and
nano-particles
copper
oxide
(µCuO
nCuO)
on
thermal
decomposition
composite
solid
propellants
(CSPs)
based
ammonium
perchlorate,
hydroxyl
terminated
polybutadiene
binary
fuel
mixture
aluminum
lithium
tetrahydridoaluminate
(AP/HTPB/Al+LiAlH4).
The
prepared
CSPs
were
analyzed
by
different
analytical
techniques.
second
part
study
was
devoted
kinetic
modeling
process
fabricated
samples.
light
obtained
results,
it
concluded
that
use
µCuO
nCuO
accelerated
CSPs.
Moreover,
incorporation
LiAlH4-based
propellant
increased
substantially
heat
release
decreased
average
activation
energy
compared
baseline
reaction
mechanisms
investigated
samples
have
clearly
changed
through
nano-
micro-CuO.
Defence Technology,
Journal Year:
2022,
Volume and Issue:
26, P. 111 - 122
Published: June 7, 2022
Aluminum
(Al)
particles
are
commonly
added
to
energetic
materials
including
propellants,
explosives
and
pyrotechnics
increase
the
overall
energy
density
of
composite,
but
aluminum
agglomeration
on
combustion
surface
may
lower
efficiency
resulting
in
a
loss
two-phase
flow.
Therefore,
it
is
necessary
understand
mechanism
surface.
In
this
paper,
high-pressure
sealed
chamber
constructed,
high-speed
camera
used
capture
whole
process
accumulation,
aggregation
surface,
secondary
near
The
microscopic
morphology
chemical
composition
condensed
products
(CCPs)
then
studied
by
using
scanning
electron
microscopy
coupled
with
dispersive
(SEM-EDS)
method.
Results
show
that
there
three
main
types
products:
small
smoke
oxide
oxidized
vapor,
usually
less
than
1
μm;
typical
agglomerates
formed
agglomerates;
carbonized
widely
distributed,
irregular
movements
agglomerates.
particle
size
measured
laser
meter.
As
pressure
increases
from
0.5
MPa
1.0
nitrogen,
mass
average
decreases
49.7%.
ambient
gas
changed
nitrogen
air,
67.3%.
as
increases,
higher
oxygen
content
can
improve
reduce
particles.
