3D Printing for Explosive and Propellant Applications
Deleted Journal,
Год журнала:
2024,
Номер
3(3), С. 200151 - 200151
Опубликована: Июль 1, 2024
3D
printing
technology
is
considered
the
perfect
modern
manufacturing
for
military/industrial
enterprises
worldwide.
Applying
in
explosives
and
propellants
fabrication
enables
precise
performance
control
accurate
structure
formation,
revolutionizing
traditional
concepts
improving
continuous,
automated,
integrated,
flexible
manufacturing.
As
key
components
of
propellants,
adhesives/binders
play
a
crucial
role
determining
formation
rate,
stability,
structural
integrity
explosive
formulations.
This
paper
provides
an
overview
four
major
technologies
suitable
manufacturing:
vat
photopolymerization,
binder
jetting,
fused
deposition
modeling,
direct
ink
writing,
with
their
typical
production
processes,
technical
characteristics,
principles,
limitations
discussed.
Specific
solutions
to
photopolymerization
(printing
speed),
jetting
(low
accuracy
limited
applicable
materials),
modeling
(poor
mechanical
properties
dimensional
stability),
writing
(product
defects)
are
presented.
Additionally,
future
development
directions
prospects
discussed,
thus
providing
valuable
insights
into
application
fields
propellants.
Язык: Английский
Precision Preparation of π-Conjugated-Polymer-Based Nanofibers with Shell Tailorability by Combining Living Crystallization-Driven Self-Assembly with Nitrile N-Oxide-Based Cycloaddition
Macromolecules,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 15, 2025
Язык: Английский
Design, synthesis and curing mechanism of two novel photothermal dual-curing adhesives for propellants and explosives
FirePhysChem,
Год журнала:
2023,
Номер
4(1), С. 63 - 71
Опубликована: Окт. 2, 2023
Photothermal
dual-curing
adhesive
is
not
only
required
to
realize
the
basic
curing
function,
but
also
has
characteristics
of
rapid
setting
and
strong
curing,
which
possesses
a
vital
role
in
molding
speed,
stability
structure
integrity
for
3D-printed
propellants
explosives.
Herein,
acrylate
hydroxyl
terminated
polybutadiene,
as
novel
photothermal
binders,
were
designed
synthesized
utilizing
cationic
ring
opening
polymerization
active
monomer
mechanism
strategy
reaction.
The
mechanical
properties
thermal
elastomers
systematically
investigated.
results
suggested
that
target
MAHTPB(Acrylate
hydroxy-terminated
polybutadiene)-based
adhesives
could
be
cured
rapidly
within
5
s
under
UV
light
irradiation
completely
1.5
h
heating
conditions.
Specifically,
elastomer
film
formed
by
MAHTPB-based
tensile
strength
4.63
MPa
an
elongation
386%,
exhibits
stronger
than
single
photo-
or
thermal-curing.
As
result,
photothermally
have
performed
3D
printing
experiments
achieved
relatively
satisfactory
effects.
Our
study
aims
solve
problems
short
photocuring
time,
slow
rate
incomplete
traditional
photocuring,
lays
solid
foundation
achieve
prototyping
precise
performance
control
Язык: Английский
Efficient metal-free crosslinking of common propellant binders using nitrile oxide–alkene click ligation
Polymer Chemistry,
Год журнала:
2023,
Номер
14(46), С. 5125 - 5132
Опубликована: Янв. 1, 2023
A
promising
tritopic
nitrile
oxide
with
high
stability
and
reactivity
was
synthesized
easily
applied
in
efficient
metal-free
crosslinking
of
alkenyl-terminated
binders
as
a
click
ligation
reagent.
Язык: Английский
Highly Flexible Polyether for Solid Propellants: Synthesis, Room Temperature Curing, Thermal Analysis, and Mechanical Properties
ACS Applied Polymer Materials,
Год журнала:
2024,
Номер
6(17), С. 10565 - 10573
Опубликована: Авг. 26, 2024
The
nitrile
oxide-alkene
curing
system
has
attracted
attention
in
the
solid
propellant
field
due
to
its
byproduct-free,
catalyst-free
ligation
and
room
temperature
curing.
For
field,
design
synthesis
of
alkenyl-terminated
adhesives
are
extremely
important,
where
controllable
distribution
quantity
alkene
groups
improve
integrity
cross-linked
network
cured
elastomers.
Compared
with
traditional
for
propellants
such
as
poly(ethylene
glycol)
(PEG)
polybutadiene
(PB),
poly(propylene
(PPG)
is
both
highly
flexible
polar
presence
ether
linkages
methyl
groups.
In
this
study,
PPGs
different
number-average
molecular
weights
were
used
raw
materials
further
modified
by
esterification
carbamate
reactions
successfully
obtain
two
types
polymers,
1-PPG
2-PPG.
Based
on
click
cycloaddition
reaction,
elastomers
then
obtained
at
temperature.
Strikingly,
interaction
rigid
structures,
all
exhibited
excellent
low-temperature
mechanical
properties
(at
−40
°C),
particularly
terms
elongation
break
(up
a
maximum
1126%).
This
research
introduced
kinds
providing
options
formulation
promoting
application
system.
Язык: Английский