Effect of AO 4426 on damping properties of PVA/CPE-AO 2246
Journal of Polymer Engineering,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 3, 2025
Abstract
To
investigate
the
influence
of
AO
2246
and
4426
on
damping
properties
polyvinyl
alcohol/chlorinated
polyethylene
(PVA/CPE)
composites,
a
series
composites
were
prepared
by
adding
into
PVA/CPE-AO
under
constant
mass
ratio
hindered
phenol
in
composites.
The
dynamic
mechanical
microstructure
materials
investigated
DMA,
DSC,
SEM,
FT-IR.
results
showed
that
new
peak
appeared
near
50
°C
4426,
which
indicated
phase
separation
between
matrix
occurred.
With
increase
peaks
low-temperature
section
improved.
value
low-lying
region
double
peaks,
when
coexisted
was
higher
than
containing
only
temperature
domain
effectively
broadened.
At
melting
microcrystalline
microcrystalline,
no
obvious
observed
simultaneously,
indicating
phenols
inhibited
crystallization
each
other.
Язык: Английский
Enhancement of toughness and ductility to 1,2,3-triazole Click-cured elastomers via regulation of molecular network and microphase separation
Shengda Zhang,
Ying He,
Shuiping Zhou
и другие.
European Polymer Journal,
Год журнала:
2025,
Номер
unknown, С. 113835 - 113835
Опубликована: Фев. 1, 2025
Язык: Английский
Hierarchical Assembly of Cellulose Fibrils and Tannin in Biocomposite Foam: Scalable Production via Oven Drying and Customizable Metal Ions Release for Antimicrobial Activity
Small,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 14, 2025
Abstract
Advanced
cellulose‐based
foams
are
urgently
needed
as
sustainable
packaging
materials
in
an
era
of
prioritizing
environmental
consciousness.
However,
transferring
the
mechanical
properties
cellulose
fibers
into
porous
structures
is
always
limited
by
gas
entrapment
during
foaming
and
irreversible
structural
collapse
upon
liquid
evaporation.
Herein,
a
hierarchical
assembly
strategy
combines
cationic
nanofibrils
(CCNF)
with
dynamic
covalent
tannin/borate
(T/B)
complex
to
fabricate
3D
continuous
distinct
lamellar
structure
via
oven
drying
proposed
for
scalable
production.
CCNF
assembles
T/B
onto
electrostatic
attraction
hydrogen
bonding,
while
reversible
bonds
among
impart
shear‐thinning
self‐healing
properties,
thereby
ensuring
foamability
(exceeding
300%)
stability.
Moreover,
foam
offers
versatile
platform
customization
metal
ions
(Fe
3+
,
Cu
2+
Ag
+
),
allowing
tailoring
physical
properties.
At
optimized
tannin
addition
10%,
10T/5B‐Fe
exhibits
highest
normalized
strength
above
410
Pa/density,
maintaining
ultralow
density
9.2
mg
cm
−
3
.
Additionally,
pH‐responsiveness
complexes
enables
release
long‐term
antimicrobial
activity.
This
study
demonstrates
green
functional
production,
offering
new
possibilities
next‐generation
materials.
Язык: Английский
Research on Natural Fiber Microstructure Detection Method Based on CA-DeepLabv3+
Materials,
Год журнала:
2024,
Номер
17(23), С. 5942 - 5942
Опубликована: Дек. 4, 2024
Natural
fibers
exhibit
noticeable
variations
in
their
cross-sections,
and
measurements
assuming
a
circular
cross-section
can
lead
to
errors
the
values
of
properties.
Providing
more
accurate
geometric
information
fiber
cross-sections
is
key
challenge.
Based
on
microscopic
images
natural
structures,
this
paper
proposes
microstructure
detection
method
based
CA-DeepLabv3+
network
model.
The
study
investigates
image
segmentation
algorithm
that
uses
MobileNetV2
as
feature
extraction
backbone
network,
optimizes
Atrous
Spatial
Pyramid
Pooling
(ASPP)
module
through
cascading,
embeds
an
Efficient
Multi-scale
Attention
(EMA)
mechanism.
results
show
proposed
accurately
segment
microstructures
multiple
types
fibers,
achieving
average
pixel
accuracy
(mPA)
95.2%
mean
Intersection
over
Union
(mIoU)
90.7%.
Язык: Английский