IPC-TM-650 EN 2022 试验方法--.pdf - 第251页

IPC-TM-650 Figure 1 Keyhole T est Plate 8.5 cm ± 0.13 cm ‘‘A” ‘‘A” 3.8 cm ± 0.25 c m 2 cm ± 0.25 cm 13.5 cm ± 0.25 cm 8 cm ± 0.25 cm 1.9 cm Blend entry edge of hole into bevel of slot 0.4 cm ± 0.013 cm (Slot) R 0.3 cm th…

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Figure 1 Multiple Failure Modes
Peel Distance
Load
High Peel Strength
Failure Mode
Low Peel Strength
Failure Mode
IPC-TM-650
Number
Subject Date
Revision
Page 3 of 3
2.4.8
Peel
Strength
of
Metallic
Clad
Laminates
12/94
C
5.2.3.7
Rinse
in
hot
water
at
55
±
5
℃
[131
±
9°F]
for
5
±
1
minutes.
5.2.3.8
Dry
for
30
±
5
minutes
at
125
±
5
℃
[257
土
9°F]-
5.2.3.9
Immerse
in
a
hot
oil
bath
maintained
at
220
土
5
℃
[428
±
9°F]
for
40
±
5
seconds.
5.2.3.10
Immerse
in
degreaser
as
specified
in
4.4.4
at
23
±
2
℃
[73.4
±
3.6°F]
for
75
±
5
seconds
to
remove
hot
oil.
5.2.3.11
Air
dry
specimens
and
perform
steps
5.2.1
.2
through
5.2.1
.7.
5.2.4
Determination
of
Degradation
Examine
the
speci¬
mens
using
normal
or
corrected
20/20
vision.
Record
and
report
the
presence
of
any
base
laminate
degradation,
includ¬
ing
loss
of
surface
resin,
discoloration,
resin
softening,
delami¬
nation,
blistering,
propagation
of
imperfections,
measling,
crazing,
or
voids.
5.3
Calculation
and
Report
5.3.1
Calculate
the
peel
strength
as
per
the
formula:
..
.
Lm
M
m
=
画
where:
Lm
二
Minimum
Load
Ws=
Measured
width
of
peel
strip
5.3.2
Record
and
report
each
individual
peel
strength
value.
Average
the
individual
peel
strength
values
for
each
side
and
each
grain
direction
of
the
laminate
sampling.
For
example,
if
the
sampling
plan
calls
for
one
specimen
per
side
and
per
grain
direction,
there
will
be
at
least
two
values
to
be
averaged
from
four
different
specimens.
5.3.3
Report
any
presence
of
laminate
degradation
as
observed
in
5.2.4
6.0
Notes
6.1
Test
strip
breakage
may
be
caused
by
either
a
bond
greater
than
the
tensile
strength
of
the
foil,
or
foil
brittleness.
Where
superior
bond
is
shown
(value
at
break
above
specifi¬
cation)
the
value
at
break
may
be
used
instead
of
minimum
peel.
The
average
reported
shall
indicate
that
the
value
is
greater
than
average.
6.2
For
metallic
cladding
less
than
one
oz
thickness,
copper
plating
or
solder
coating
may
be
used
to
build
up
to
0.035
±
0.0035
mm
[0.0014
土
0.00014
in]
to
provide
strip
strength.
6.3
Environmental
aspects
of
chemicals
as
specified
in
4.4.1
and
4.4.4.
Based
on
industry
and
government
policies
toward
chemicals
which
are
hazardous
to
worker
health
or
of
concern
for
ozone
depletion,
previous
requirements
for
use
of
Methyl¬
ene
Chloride
and
1
,1
,1
Trichloroethane
have
been
replaced
with
equivalents.
IPC-TM-650
Figure 1 Keyhole Test Plate
8.5 cm
± 0.13 cm
‘‘A” ‘‘A”
3.8 cm ± 0.25 cm
2 cm
± 0.25 cm
13.5 cm
± 0.25 cm
8 cm ± 0.25 cm
1.9 cm
Blend entry edge of
hole into bevel of slot
0.4 cm ± 0.013 cm (Slot)
R
0.3 cm thick
AL Alloy
AA6061 T651
Pl
18 ± 2
0.41 cm Ref.
Section “A”-“A” Bevel detail 4x
+ 0.02 cm
- 0.013 cm
dia. hole
o
o
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.
Equipment referenced is for the convenience of the user and does not imply endorsement by the IPC.
Page 1 of 3
IPC-TM-650
TEST
METHODS
MANUAL
1
Scope
This
method
is
designed
to
determine
the
peel
strength
of
metal
foil
when
bonded
to
thin
laminates.
Peel
strength
is
determined
for
specimens
as
received
or
after
con¬
ditioning,
such
as
solder
immersion
or
elevated
temperature
exposure.
2
Applicable
Documents
Test
Methods
Manual
2
.4.8
Peel
Strength
of
Metallic
Clad
Laminates
3
Test
Specimen
Bonded
metal
foil
with
peel
strength
test
patterns
3
mm
wide
and
up
to
76
mm
long
(each
specimen
is
about
60
mm
to
76
mm
long)
4
Apparatus
4.1
Force
gage
or
testing
machine
capable
of
a
travel
speed
of
5
cm
per
minute
with
a
range
of
1
kg
to
1
.4
kg
and
4.5
g
minimum
scale
divisions
4.2
Keyhole
test
plate
per
Figure
1
,
or
equivalent
4.3
Keyhole
horizontal
base
fixture
per
Figure
2
4.4
Chain
61
cm
to
71
cm
4.5
Surgical
hemostat
4.6
Cylindrical
spring
paper
clips
(Boston
clip
No.
4,
Hunt
Mfg.
Co.)
4.7
Chain
to
hemostat
adapter,
per
Figure
3
(approximately
76
mm
long)
4.8
Scalpel
5
Procedure
5.1
Preparation
5.1.1
Cut
specimens
from
a
laminated
or
bonded
and
etched
panel
and
trim
to
the
edge
of
the
peel
tabs.
Number
2.4.8.1
Subject
Peel
Strength,
Metal
Foil
(Keyhole
Method
For
Thin
Laminates)
Date
Revision
1/86
Originating
Task
Group
N/A
5.1
.2
Make
a
cut
about
6.35
mm
to
9.5
mm
along
each
side
of
the
peel
tab,
bend
up
the
peel
tab
90°,
break
the
laminate,
and
pull
up
without
breaking
the
foil.
5
J
.3
Pull
up
the
foil
about
3
mm
to
6.35
mm
for
about
a
9.5
mm
to
13
mm
starting
length
(a
scalpel
can
be
used
to
start
the
foil
peel).
5.2
Conditioning
If
specimens
are
to
be
conditioned
,the
conditions
in
IPC-TM-650,
Method
2.4.8,
shall
be
used.
Other
conditions
of
specifications
working
this
method
as
applicable
may
be
used.
5.3
Test
5.3.1
Place
the
specimen
on
the
base
fixture,
metal
foil
side
up,
and
center
the
peel
strip
on
the
base.
Figure
2 Keyhold Horizontal Axis
10 cm ±
0.25 cm
(2) .138-32UN-2B
0.025 cm dia.
0.064 cm
± 0.05 cm
10 cm ± 0.25 cm
0.475 cm
± 0.025 cm
0.95 cm ±
0.025 cm
2
0.064 cm
AL Alloy
0.475 cm
± 0.05 cm
0.95 cm ± 0.075 cm
3
MS 16995
SCR CAP SOC HD
10.5 cm
± 0.075 cm
AA6061 T651
0.475 cm
± 0.025 cm
1.9 cm
± 0.025 cm
0.4 cm
+ 0.013 cm
- 0.0075 cm
dia.
2 holes
0.32 cm thick
AL Alloy
AA6061 T651
1
GI
IPC-TM-650
Number
Subject Date
Revision
Page 2 of 3
2.4.8.1
Peel
Strength,
Metal
Foil
(Keyhole
Method
For
Thin
Laminates)
1/86
I
PC-2-4-8-1
-2
5.3.2
Place
the
keyhole
plate
over
the
peel
strip
with
the
tab
in
the
large
hole
and
the
strip
centered
in
the
slot.
5.3.3
Clamp
the
keyhole
plate
to
the
base
with
the
paper¬
clips,
making
sure
the
alignment
is
not
disturbed.
5.3.4
Attach
the
hemostat
to
the
tab
so
the
peel
will
be
90°
to
the
strip
(the
hemostat
should
be
attached
to
the
chain
with
the
adapter
and
hanging
from
the
tester
jaws
or
force
gage
so
that
the
tab
can
be
clamped
without
excessive
bending
or
damage).
5.3.5
Start
the
vertical
pull
(5
cm
per
minute)
with
the
test
head
and
initiate
a
chart
recorder
or
visually
observe
the
mini¬
mum
and
pull
force.
5.3.6
Lower
the
head
or
force
gage
to
position
for
starting
the
next
peel
strip
and
repeat
starting
at
5.2.1.