IPC-TM-650 EN 2022 试验方法.pdf - 第226页

1.0 Scope This test method establishes a procedure for determining whether the adhesion of a polymer coating to an inorganic or ceramic substrate is above an adequate level. The substrate may or may not have an oxide lay…

5.3.3

Place

the proper surface of the weight on the filter

paper.

5.3.4

Grasping one end of the filter paper, pull the paper

and the weight across the surface of the foil (going in the

transverse direction, across the grain) for a distance of 6″.

6.0

EVALUATION

6.1

The

specimen is evaluated for treatment transfer as fol-

lows:

1. No transfer

2. Very slight transfer

3. Slight transfer

4. Transfer

6.2

The

grading scheme listed above will be based on visual

comparison of an acceptance standard agreed upon by user

and supplier.

IPC-TM-650

Number

2.4.1.5

Subject

Determination

of Treatment Transfer

Date

5/95

Revision

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1.0

Scope

This

test method establishes a procedure for

determining whether the adhesion of a polymer coating to an

inorganic or ceramic substrate is above an adequate level.

The substrate may or may not have an oxide layer on the sur-

face. The test can be inverted and used for determining the

adhesion of a metal coating to a polymer film.

2.0

Applicable Documents

ASTM D 3330

Test

Method for Peel Adhesion of Pressure-

Sensitive Tape of 180° Angle

ASTM

D 3359

Standard

Test Methods for Measuring Adhe-

sion by Tape Test

3.0

Test Specimen

The

test specimen shall consist of the

coated substrate. A control should also be prepared using a

mutually agreed upon material whose results from this test are

known, preferably a material with an adhesion classification of

5. At least 3 test specimens should be prepared for each

material of interest.

4.0

Apparatus or Material

4.1

mm [1.0 in] wide semitransparent pressure sensitive

tape with an adhesion strength of 43 ± 6 g/mm [38 ± 5 oz/in].

The adhesion should not change more than 6.5% of its mean

value within 12 months. 3M Scotch brand #600 tape has

been found to be acceptable for this test.

4.2

Rubber

eraser on end of pencil.

4.3

light source is helpful in determining if the cut has

been made all the way through the polymer to the substrate.

4.4

closed boiling water bath.

5.0

Procedure

5.1

Preparation

of test specimen. Refer to ASTM D 3330

and ASTM D 3359.

5.1.1

Prepare

and clean the substrate according to the

manufacturer’s recommended procedure.

5.1.2 Prime

the surface with the manufacturer’s recom-

mended adhesion promoter, if required.

5.1.3

Apply

a 10 µmto25µm (measured after processing

is complete) coating onto the surface of the substrate using

the manufacturer’s recommended procedure.

5.2

Pattern Coating

The

coating should be patterned

according to the procedures outlined in section 4.2.5 of IPC-

DD-135. The pattern consists of a 10 x 10 grid of 1 mm x 1

mm squares separated by 100 µm wide lines or pattern fea-

tures, as illustrated in Figure 1. At least two complete grids

must be patterned on the specimen, one for the initial test and

one for the 3 hour test.

5.3

Test

5.3.1

Remove

two complete laps of tape and discard.

Remove an additional length at a steady (not jerked) rate and

cut a piece approximately 75 mm [3.0 in] long.

5.3.2

Place

the center of the tape over one of the grid pat-

terns and smooth into place by a finger. Rub the tape firmly

with the eraser on the end of the pencil to ensure good con-

tact between the tape and the film. The color under the tape

is a good indicator of contact between the tape and the film.

2.4.1.6-01

Figure

1 mm100

The

Institute for Interconnecting and Packaging Electronic Circuits

2215 Sanders Road • Northbrook, IL 60062-6135

IPC-TM-650

TEST

METHODS MANUAL

Number

2.4.1.6

Subject

Adhesion,

Polymer Coating

Date

7/95

Revision

Originating Task Group

Deposited Dielectric Task Group (C-13a)

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.

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5.3.3

Within

90 seconds of applying the tape, remove the

tape with a steady motion by pulling at a 180° angle.

5.3.4

Inspect the lattice pattern under illumination for

removal of coating from the substrate. Rate the adhesion in

accordance with the following scale illustrated in Figure 2:

•5 The edges of the line patterns are completely smooth;

none of the squares of the lattice are detached.

•4 Small flakes of the coating are detached at the intersection

of the lattice; less than 5% of the area is affected.

•3 Small flakes of the coating are detached along the edges

and at intersections of the lattice. The area affected is 5 to

15% of the lattice.

•2 The coating has flaked along the edges and on parts of

the squares. The area affected is 15 to 35% of the lattice.

•1 The coating has flaked along the edges of the line patterns

in long ribbons and whole squares have detached. The

area affected is 35 to 65% of the lattice.

•0 Greater than 65% of the lattice has detached.

5.3.5

Place

the test specimens in a boiling water bath and

stress the samples for 3 hours. The water in the boiling water

bath must completely cover the test specimens for the entire

3 hours. A closed system that returns the steam as conden-

sation is preferred.

5.3.6

Remove

the test specimens from the boiling water

bath or environmental chamber and allow to cool to room

temperature.

5.3.7

Wipe

sample dry. Repeat steps 5.3.1-5.3.4 on the

second (unused) grid pattern.

5.3.8

Report

adhesion results for both the initial and 3 hour

tests.

6.0 Notes

None

2.4.1.6-02

Figure

Classification

None

0 Greater than 65%

Surface of cross-cut area from

which flaking has occurred.

(Example for six paralleled cuts)

IPC-TM-650

Number

2.4.1.6

Subject

Adhesion,

Polymer Coating

Date

7/95

Revision

age2of2

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