IPC-TM-650 EN 2022 试验方法.pdf - 第225页

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 gr…

1.0

SCOPE

1.1

This procedure describes three methods to determine

the level of treatment transfer for treated copper foil.

2.0

APPLICABLE DOCUMENTS

ANSI/IPC-MF-150

‘‘Metal

Foil for Printed Wiring Applica-

tions,’’ October 1991, current revision.

ANSI/IPC-CF-152

‘‘Composite

Foil Specification,’’ current

revision

3.0

DEFINITION

3.1 Treatment

electro-mechanical or chemical process

applied to one or both sides of copper foil to enhance the

adhesion of the foil to the base laminate.

3.2

Treatment Transfer

Any

visible bond enhancement

that has transferred from the surface of the copper foil to the

laminate substrate.

4.0

EQUIPMENT

4.1

For

the Tape Transfer method a sample of the foil to

tested 152 mm x 152 mm.

4.1.1

Scotch Brand #600 Tape 19 mm wide.

4.2

For

the Strip Transfer method a representative sample of

foil, pressed to four plies of 7628 FR-4 prepreg to produce a

0.028 ml laminate, or as agreed upon by user and supplier.

4.2.1

Etching

system capable of removing copper foil from

base laminate.

4.3

For

the Weight and Filter Paper method a sample of

treated foil at least 203 mm x 51 mm.

4.3.1

Filter Paper strips at least 76 mm x 25 mm.

4.3.2

standardized weight of 250 grams with a 3/4 inch

surface

4.4

Visual Acceptance Standards

4.5 White Background

5.0 TEST PROCEDURE

5.1 Tape Transfer Method

5.1.1

Each

copper sample being tested will have tape 19

mm x 102 mm applied to the treatment side in the machine

direction of the foil. The tape should be firmly applied by hand.

5.1.2

Remove

the tape by quickly pulling on one end at an

acute angle.

5.1.3

The

tape should then be reaffixed, adhesive side down

on standard white paper.

5.2

Strip Transfer Method.

5.2.1

Image

a line on the laminate to a minimum of 1/8 inch

wide.

5.2.2

Etch,

clean and process using standard industry prac-

tices and equipment. If preferred, a cut or sheared sample

may be used.

5.2.3

Pull

the strip of foil back 1 inch to expose the area

directly under the foil.

5.2.4

Visually

examine this area by placing the laminate strip

against a white background and comparing the amount of

transfer with the standard.

5.3

Weight

and Filter and Paper Method

5.3.1

Place

the copper foil sample on a firm, flat surface

with the treatment side up.

5.3.2

Place

the #2 filter paper on the copper foil sample with

the rougher side of the paper against the foil.

The

Institute for Interconnecting and Packaging Electronic Circuits

2215 Sanders Road • Northbrook, IL 60062-6135

IPC-TM-650

TEST

METHODS MANUAL

Number

2.4.1.5

Subject

Determination

of Treatment Transfer

Date

5/95

Revision

Originating Task Group

Treatment Transfer

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

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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