IPC-TM-650 EN 2022 试验方法.pdf - 第119页

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…

continuously recorded, and the recorded load for the entire

length of peeled conductor shall 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] shall 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]

x100=%ofOriginal

†

[Average Peel Strengths of three (3)

non-immersed test trace segments]

†

NOTE: 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

at23°C±2°C[73.4 °F ± 3.6 °F] and 50% ± 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 (1) minute [+10

seconds/-0 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 °C±5°C[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

shall 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, shall be rejected.

IPC-TM-650

Number

2.3.2

Subject

Chemical Resistance of Flexible Printed Board Materials

Date

12/07

Revision

Page3of3

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°C.

4.5

Solution

B: Terpene defluxer consisting of a minimum of

90% d-limonene and 10% surfactant at 25 ± 5°C.

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°C.

5.0

Procedure

5.1

The

following procedure shall be using solutions A, B,

and C individually.

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.

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

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

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.

The

Institute for Interconnecting and Packaging Electronic Circuits

2215 Sanders Road • Northbrook, IL 60062-6135

IPC-TM-650

TEST

METHODS MANUAL

Number

2.3.4

Subject

Chemical

Resistance, Marking Paints and Inks

Date

8/97

Revision

Originating Task Group

Rigid Board T.M. Task Group, 7-11d

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.

age1of1

电子技术应用　　　　　　　ｗｗｗ．ＣｈｉｎａＡＥＴ．ｃｏｍ

1.0

Scope

This

method is designed to evaluate the resis-

tance of dielectric materials to organic chemicals representa-

tive of those used in printed board fabrication and assembly.

It is intended to provide a distinction between materials of

varying chemical resistance and, when applicable, an indica-

tion of the degree of cure.

2.0

Applicable Documents

IPC-TM-650

Method

2.2.18, Determination of Thickness of Laminates by

Mechanical Measurement

Weast, R.C., CRC Handbook of Chemistry and Physics, 65th

Edition, E-37, 1984

3.0

Test Specimens

3.1 Number

Unless

otherwise specified, three specimens

shall be used.

3.2

Size

Unless

otherwise specified, specimen shall be

50.8 x 50.8 mm ± 0.5 mm [2.0 x 2.0 ± 0.02 in] by the thick-

ness of the material (see 5.1, Preparation). Edges shall be

smooth, whether by the cutting procedure, or by sanding, or

other means.

3.3

Location

Specimen

may be cut from anywhere in the

sheet of material, except no specimens shall be taken closer

than 25.4 mm [1.0 in] from any edge as laminated.

4.0

Apparatus or Material

4.1

Analytical

balance with a draft shield and .001 gram or

better resolution.

4.2

Air

circulating oven, capable of 105 ± 2°C [221 ± 3.6°F].

4.3

Desiccator

capable of maintaining an atmosphere of less

than 30% relative humidity at 23°C [73°F]. See 6.2.5

4.4

Cutting

apparatus such as diamond saw, shear paper

cutter or router.

4.5 Edge

smoothing apparatus such as 400 grit or finer

sandpaper.

4.6

One

liter battery jar, with cover.

4.7 Metal tongs or forceps.

4.8

Metal

rack (to support specimens vertically).

4.9

Metal

support (e.g., mounting clip used for microsec-

tioning).

4.10

Laminating

press capable of the specified temperature

and pressure.

4.11

Timer:

1 hour with 1 second resolution.

4.12

Timer:

60 seconds, 1 second resolution.

4.13

Solvent:

Methylene Chloride, Reagent Grade or HPLC

Grade. MC recovered by distillation back to reagent grade

may be used. HPLC Grade shall be used for referee pur-

poses.

4.14

Prepreg

(for single sided laminate and coated foil test

only).

4.15 Copper

foil, 1 oz./ft

treated

(for prepreg tests only).

4.16

Ventilation

hood

4.17 Micrometer,

capable of measuring to within 0.025 mm

[0.001 in]

4.18

Water

bath at 23 ± 0.5°C [73 ± 0.9°F].

4.19

Thermometer

capable of measuring to within 0.1°C

resolution.

4.20

Etching

system capable of metallic cladding removal.

5.0

Procedure

5.1 Sample Preparation

5.1.1 Single-sided Laminate

Single-sided

laminate less

than 0.5 mm [0.020 in] shall be laminated together with the

clad surfaces facing out. Two plies minimum of prepreg shall

be used. The prepreg shall be of the same basic resin type

The

Institute for Interconnecting and Packaging Electronic Circuits

2215 Sanders Road • Northbrook, IL 60062-6135

IPC-TM-650

TEST

METHODS MANUAL

Number

2.3.4.2

Subject

Chemical

Resistance of Laminates, Prepreg, and

Coated Foil Products, by Solvent Exposure

Date

12/94

Revision

Originating Task Group

MIL-P-13949 Test Methods Task Group (7-11b)

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.

age1of4

电子技术应用　　　　　　　ｗｗｗ．ＣｈｉｎａＡＥＴ．ｃｏｍ