CADCO
ACETAL
copolymer
(extruded)
Raw
material
group
:
Polyoxymethylene
DIN
abbreviation
:
POM
Colour
:
Natural
White
or
Black
Specimen
Condition
:
Dry
/
Moist
Cadco
Acetal copolymer
is a
melt
processable
thermoplastic
from
the
polymerization
of
trioxane
(the
trimer
of
formaldehyde)
with
a
small
amount
of
cyclic
ether
containing
a
(-CH2-CH2-O-)
group
and
end
capped
by
de-polymerizing
the
unstable
POM
end
groups
to
the
the
oxyethylene
unit.
Acetals
are typified
by
the repeating
unit
(-CH2-O-)
in
the
backbone
resulting
in
a
highly
crystalline
structure.
Advantages
Acetals
are
hard,
strong
and
stiff
with
toughness though
they
display
some
notch
sensitvity.
They
have
a
very
low
co-effiecent
of
friction
against
themselves
and
other
materials
such
as
other
plastics,
metals,
glass
and
ceramics,
are
creep
and
fatigue
resistant,
are
extremely
resistant
to
attack
or
dissolution
by
chemicals
and
exhibit
long
term
retention
of
properties.
Acetals
are
very
easily
machined.
Most
Acetals
are
suitable
for
applications
that
must
meet
FDA
requirements
for
food
contact
surfaces.
Applications
:
For
valves,
gears,
cams,
fuel
system
components,
electrical
switch
gear,
chain
links,
handles,
valve
seats
in
water
systems,
rollers
and
pulleys
in
marine
applications.
Shape
Available:
ROD
standard
length
3
in,
diameters
5
mm
to
250
mm,
also
ground
finish
up to
80
mm.
Chemical
Resistance
:
Resistant
-R
(swelling
<
3%
or
weight
loss
<
0
5%)
Limited
Resistance
-LR
(swelling
3-8%
or
weight
loss
0.5-5%
and/or
elongation
at
break
reduced
by
<
50%)
Not
Resistant
-NR
(swelling
>
8%
or
weight
loss
>
5%
and/or
elongation
at
break reduced by
>
50%)
CADCO
ACETAL
copolymer
(extruded)