IPC-TM-650 EN 2022 试验方法--.pdf - 第118页

shall shall † NOT E: shall shall IPC-TM-650 Page 3 of 3 Number 2.3.2 Subject Chemical Resistance of Flexible Printed Board Materials Date 12/07 Revision G continuously recorded, and the recorded load for the entire lengt…

100%1 / 824
shall
shall
Figure 2 Chemical Resistance Test Pattern with Halfway
Line Marking Example
Immersion Line
Tab end Immerse this end
IPC-TM-650
Page 2 of 3
Number
2.3.2
Subject
Chemical
Resistance
of
Flexible
Printed
Board
Materials
Date
12/07
Revision
G
be
rinsed
for
one
(1)
minute
minimum
to
five
(5)
minutes
maxi¬
mum
in
its
own
dedicated
deionized
(DI)
water
rinse
which
is
maintained
at
55
±
5
[131
°F
±
9
°F]-
a)
Etchant
Solution:
An
aqueous
solution
of
450
grams
土
4.5
grams
Cupric
Chloride
Dihydrate
[CuCI2-2H20]
(CAS
10125-13-0)
and
150
ml
±
2
ml
Reagent
Grade
(36.5-
38%)
Hydrochloric
Acid
[HCI]
(CAS
7647-01-0)
with
a
spe¬
cific
gravity
of
1.155
-
1.164
[19°
-
21°
Baum?]
diluted
in
one
liter
of
water,
55
±
5
[131
°F
±
9
°F].
b)
Stripper
Solution:
An
aqueous
solution
of
5.0%
Potassium
Hydroxide
[KOH]
(CAS
1310-58-3)
with
the
equivalent
of
0.5%
Monoethanolamine
[H0(0H2)2NH2]
(CAS
141-
43-5)
and
0.5%
Propylene
Glycol
Monobutyl
Ether
[0H3CH(0H)CH20(CH2)3CH3]
(CAS
5131-66-8),
55
土
5
[131
°F
±
9
°F]
or
an
equivalent
commercial
stripper
solution.
c)
Acid
Cleaner:
2N
Sulfuric
Acid
[H2SO4]
(CAS
7664-93-9),
23
±
2
[73.4
°F
±
3.6
°F]
d)
Organic
Cleaner:
70%
±
5%
Isopropanol
[(CH3)2CH0H]
(CAS
67-63-0),
23
±
2
[73.4
°F
±
3.6
°F]
4.7.1
Other
Chemicals
Other
specified
chemicals
may
be
added
where
the
customer/supplier
have
specific
process
requirements.
A
list
of
fluids
or
chemicals
may
be
specified
where
the
end
product
circuit
will
be
subjected
to
specific
environments,
such
as:
fuels,
cleaning
solvents,
etc.
5
Procedures
5.1
Method
A
-
Metal-Clad
Dielectric
5.1.1
Test
Specimen
Preparation
Prepare
a
minimum
of
six
(6)
test
specimens
[twice
as
many
minimum
as
required
for
one
set
of
tests,
allowing
for
at
least
one
repetition,
if
needed]
in
accordance
with
Figure
1
using
standard
commercial
prac¬
tices.
Do
not
remove
the
etch
resist.
Measure
the
conductor
width
of
the
test
specimen
to
ensure
compliance
with
width
requirements.
Mark
the
halfway
line
for
the
subsequent
dip¬
ping
tests
with
a
piece
of
platers
tape
or
similar
method
on
the
nonpatterned
side
(back
side)
of
each
test
specimen,
in
accordance
with
Figure
2.
5.1.2
Conditioning
Condition
each
test
specimen
for
24
hours
+1/-0
hours
at
23
±
2
[73.4
°F
±
93.6
°F]
and
50%
±
5%
relative
humidity
prior
to
testing.
5.1.3
Test
Procedure
1
1
1
1
1
1
1
1
1
1
IPC-232g-2
5.1.
3.1
Sequential
Chemical
Exposure
Test
Immerse
three
(3)
test
specimens
for
one
minute
[+10
seconds/-。
sec¬
onds]
halfway
into
each
of
the
specified
chemicals.
After
immersion
in
each
chemical,
rinse
each
test
specimen
in
the
appropriate
dedicated
immersion
DI
water
rinse
which
is
maintained
at
55
±
5
[131
°F
±
9
°F]
for
one
(1)
minute
minimum
and
five
(5)
minutes
maximum.
Use
the
sequence
as
follows:
1.
Etchant
Solution
2.
Dedicated
Etchant
DI
Immersion
Rinse
3.
Stripper
Solution
4.
Dedicated
Stripper
DI
Immersion
Rinse
5.
Acid
Cleaner
6.
Dedicated
Acid
Cleaner
DI
Immersion
Rinse
7.
Organic
Cleaner
8.
Dedicated
Organic
Cleaner
DI
Immersion
Rinse
Within
fifteen
(1
5)
to
thirty
(30)
minutes
after
completion
of
the
sequential
chemical
exposure,
observe
for
tackiness,
blister¬
ing,
bubbles,
delamination,
or
swelling
within
the
dielectric,
blistering
or
delamination
of
the
copper
and
dielectric,
or
change
in
color
of
dielectric.
After
sixteen
(16)
to
twenty-four
(24)
hours,
repeat
the
observations
and
peel
the
conductors
for
the
immersed
and
non-immersed
specimens,
using
the
following
procedure
[see
IPC-TM-650,
Method
2.4.9
(Method
A)].
Attach
the
test
specimen
to
the
free
wheeling
rotary
drum
test
fixture
with
double-sided
tape,
cement
and/or
mechanical
clamps.
The
referee
attachment
technique
will
be
double¬
sided
adhesive
tape.
Peel
the
conductor
at
a
rate
(crosshead
speed)
of
50.8
mm/m
inute
[2.0
in/minute].
The
peel
load
be
between
15-85
percent
of
the
range
of
the
scale
used
on
the
testing
machine.
5.1.4
Data
Evaluation
Record
and
report
all
discrepancies
noted
during
the
observation
periods
The
peel
load
be
shall
shall
†
NOTE:
shall
shall
IPC-TM-650
Page 3 of 3
Number
2.3.2
Subject
Chemical
Resistance
of
Flexible
Printed
Board
Materials
Date
12/07
Revision
G
continuously
recorded,
and
the
recorded
load
for
the
entire
length
of
peeled
conductor
be
evaluated
by
averaging
the
chart
recording
values
for
each
segment
(immersed
and
non-immersed)
of
each
test
specimen.
A
minimum
of
57.2
mm
[approximately
2.25
in]
be
peeled
for
each
seg¬
ment,
with
the
first
6.4
mm
[approximately
0.25
in]
to
be
dis¬
regarded.
Compare
the
average
peel
strengths
of
the
immersed
segments
of
the
three
(3)
test
traces
with
those
of
the
non-immersed
segments
of
the
same
three
(3)
test
traces,
in
accordance
with
the
following
formula:
[Average
Peel
Strengths
of
three
(3)
immersed
test
trace
segments]
x
1
00
=
%
of
Originalt
[Average
Peel
Strengths
of
three
(3)
non-immersed
test
trace
segments]
Values
may
be
higher
than
100%,
which
may
indicate
chemical
absorption.
5.2
Method
B
-
Bare
Dielectric
5.2.1
Test
Specimen
Preparation
Cut
twelve
(12)
test
specimens,
as
per
3.2.
This
allows
for
at
least
one
full
repeti¬
tion
of
tests,
if
needed.
5.2.2
Conditioning
Condition
each
specimen
for
24
hours
at
23
±
2
[73.4
°F
土
3.6
°F]
and
50%
土
5%
relative
humidity
prior
to
testing.
5.2.3
Test
Procedure
5.2.3.
1
Sequential
Chemical
Exposure
Test
Fully
immerse
three
(3)
test
specimens
for
one
minute
[+10
seconds/-。
seconds]
into
each
of
the
specified
chemicals
on
a
sequential
basis.
After
immersion
in
each
chemical,
rinse
the
specimen
in
the
appropriate
dedicated
immersion
DI
water
rinse
which
is
maintained
at
55
±
5
[131
°F
±
9
°F]
for
one
(1)
minute
minimum
and
five
(5)
minutes
maximum.
Use
the
sequence
as
follows:
1.
Etchant
Solution
2.
Dedicated
Etchant
DI
Immersion
Rinse
3.
Stripper
Solution
4.
Dedicated
Stripper
DI
Immersion
Rinse
5.
Acid
Cleaner
6.
Dedicated
Acid
Cleaner
DI
Immersion
Rinse
7.
Organic
Cleaner
8.
Dedicated
Organic
Cleaner
DI
Immersion
Rinse
Within
fifteen
(15)
to
thirty
(30)
minutes
after
completion
of
the
sequential
chemical
exposure,
observe
for
tackiness,
blister¬
ing,
bubbles,
delamination,
or
swelling
within
the
dielectric
or
change
in
color
of
dielectric.
After
sixteen
(16)
to
twenty-four
(24)
hours,
repeat
the
observations
and
determine
the
tensile
strength
and
elongation
using
the
procedure
as
described
in
IPC-TM-650,
Method
2.4.18.3.
5.2.4
Data
Evaluation
Record
and
report
all
discrepancies
noted
during
the
observation
periods.
The
evaluation
is
con¬
sidered
to
have
passed
when
the
immersed
specimens
meet
or
exceed
the
minimum
tensile
strength
and
elongation
requirements
for
the
material
under
test.
If
the
immersed
test
specimens
do
not
pass,
then
the
non-immersed
specimens
be
tested
for
both
tensile
strength
and
elongation
to
verify
that
these
parameters
pass
the
requirements
for
the
material
under
test.
If
the
non-immersed
test
specimens
do
not
pass,
then
the
lot
of
bare
dielectric,
represented
by
the
test
specimens,
be
rejected.
The Institute for Interconnecting and Packaging Electronic Circuits
2215 Sanders Road • Northbrook, IL 60062-6135
Material in this Test Methods Manual was voluntarily established by Technical Committees of the IPC. This material is advisory only
and its use or adaptation is entirely voluntary. IPC disclaims all liability of any kind as to the use, application, or adaptation of this
material. Users are also wholly responsible for protecting themselves against all claims or liabilities for patent infringement.
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Page 1 of 1
IPC-TM-650
TEST
METHODS
MANUAL
1
.0
Scope
This
test
method
is
used
for
determining
that
marking
inks
and/or
color
coding
will
not
become
illegible
or
discolored
when
subjected
to
solutions
that
are
normally
used
as
cleaning
agents
for
printed
boards
or
printed
board
assem¬
blies.
2
.0
Applicable
Documents
None
3
.0
Test
Specimens
Test
specimens
may
consist
of
test
coupons
or
production
printed
boards
with
the
appropriate
markings.
The
amount
or
size
of
the
marking
on
the
test
specimen
shall
be
sufficient
enough
to
satisfactorily
perform
the
procedure
of
section
5.
4
.0
Apparatus
or
Material
4.1
Vessel
for
each
solution
used.
4.2
Toothbrush
or
suitable
applicator
for
each
solution
used.
4.3
Optical
Aid
capable
of
a
3X
magnification.
4.4
Solution
A:
Mixture
of
one
part
isopropyl
alcohol
and
three
parts
by
volume
of
mineral
spirits
at
25
±
5
℃.
4.5
Solution
B:
Terpene
defluxer
consisting
of
a
minimum
of
90%
d-limonene
and
1
0%
surfactant
at
25
±
5
℃.
4.6
Solution
C:
Mixture
of
42
parts
by
volume
of
water
(1
megohm
resistivity),
one
part
by
volume
of
propylene
glycol
monmethyl
ether,
and
one
part
by
volume
of
monoethanola¬
mine
at
63
to
70℃.
5
.0
Procedure
5.1
The
following
procedure
shall
be
using
solutions
A,
B,
and
C
individually.
Number
2.3.4
Subject
Chemical
Resistance,
Marking
Paints
and
Inks
Date
Revision
8/97
B
Originating
Task
Group
Rigid
Board
T.M.
Task
Group,
7-1
1d
5.1.2
The
test
specimens
shall
be
removed
from
the
vessel
and
with
a
toothbrush
(wetted
with
solution)
the
specimen
shall
be
brushed
for
a
minimum
of
10
strokes
on
the
area
where
the
marking
is
present.
5.1.3
Steps
5.1.1
and
5.1.2
shall
be
repeated
on
the
test
specimen
two
additional
times.
5.1.4
After
the
third
submersion
and
brushing,
the
test
specimens
shall
be
air
or
blown
dry.
5.1.5
The
test
specimens
shall
be
evaluated
in
accordance
with
5.2.
5.2
Evaluation
After
the
test
has
been
performed,
the
test
specimens
shall
be
examined
for
any
markings
that
are
miss¬
ing
in
whole
or
part,
faded,
smeared,
blurred
or
shifted
to
the
extent
that
they
cannot
be
identified
from
a
distance
of
150
mm
[6.0
in]
or
by
examining
with
a
optical
aid
using
a
magni¬
fication
of
no
more
than
3X
shall
constitute
a
failure.
6
.0
Notes
6.1
If
test
solutions
other
than
those
described
herein
are
to
be
used,
then
the
solutions
should
be
agreed
upon
between
the
vendor
and
customer
prior
to
testing.
6.2
The
three
solutions
being
used
to
perform
this
test
exhibit
some
potential
for
health
and
safety
hazards.
Safety
precautions
shall
be
observed.
6.3
It
is
the
intent
of
this
test
method
to
subject
a
different
set
of
test
samples
to
each
test
solutions.
It
is
at
the
option
of
the
tester
to
subject
the
samples
through
the
test
solutions
consecutively.
If
the
samples
fail
after
consecutive
solutions
the
test
should
be
performed
with
individual
test
solutions.
5.1.1
The
test
specimens
shall
be
submerged
for
a
mini¬
mum
of
3
minutes
(+
.5
minutes/
-
0.0
minutes)
in
a
vessel
containing
the
solution.