IEC 62899-202-4:2021
(Main)Printed electronics - Part 202-4: Materials - Conductive ink - Measurement methods for properties of stretchable printed layers (conductive and insulating)
Printed electronics - Part 202-4: Materials - Conductive ink - Measurement methods for properties of stretchable printed layers (conductive and insulating)
IEC 62899-202-4:2021(E) defines the terminology and measurement methods for the properties of stretchable printed layers, such as conductive ink, for forming stretchable conductors by printing, stretchable conductive films obtained from conductive ink, and stretchable printed wiring consisted by conductive ink with insulator.
Stretchable printed layers (conductive and insulating) handled by this document apply to the stretchable electric wiring printed on stretchable substrates, for example fabric integrated wearable devices, skin patchable devices, and so on.
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Standards Content (Sample)
IEC 62899-202-4 ®
Edition 1.0 2021-10
INTERNATIONAL
STANDARD
colour
inside
Printed electronics –
Part 202-4: Materials – Conductive ink – Measurement methods for properties
of stretchable printed layers (conductive and insulating)
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IEC 62899-202-4 ®
Edition 1.0 2021-10
INTERNATIONAL
STANDARD
colour
inside
Printed electronics –
Part 202-4: Materials – Conductive ink – Measurement methods for properties
of stretchable printed layers (conductive and insulating)
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.180; 87.080 ISBN 978-2-8322-1040-3
– 2 – IEC 62899-202-4:2021 © IEC 2021
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Atmospheric conditions for measurement and conditioning . 8
5 Measurement methods of properties of stretchable conductive inks . 8
6 Measurement methods of properties of stretchable conductive layers . 9
6.1 Stretch dependence of the conductive layer's resistance . 9
6.1.1 General . 9
6.1.2 Test piece . 9
6.1.3 Equipment and tools . 10
6.1.4 Step-by-step stretch test (static) . 12
6.1.5 Cyclic stretch test (dynamic) . 13
6.2 Washing durability . 14
6.2.1 Test method and condition . 14
6.2.2 Test piece type A with cover insulator . 14
6.2.3 Test piece type B with cover insulator . 15
6.2.4 Reporting of the results . 15
6.3 Sweat durability . 16
6.3.1 Test method and condition . 16
6.3.2 Test piece . 16
6.3.3 Reporting of the results . 16
7 Measurement methods of insulation between conductive lines . 16
7.1 Insulation resistance between conductive lines . 16
7.1.1 Test piece . 16
7.1.2 Procedure . 16
7.1.3 Reporting of the results . 17
7.2 Electric strength between conductive lines . 17
7.2.1 Test piece . 17
7.2.2 Procedure . 17
7.2.3 Reporting of the results . 18
7.3 Insulation resistance of cover insulation layer side . 18
7.3.1 Test piece . 18
7.3.2 Procedure . 19
7.3.3 Reporting of the results . 21
7.4 Electric strength of cover insulation side . 21
7.4.1 Test piece . 21
7.4.2 Procedure . 21
7.4.3 Reporting of the results . 21
7.5 Insulation resistance of the substrate side . 21
7.5.1 Test piece . 21
7.5.2 Procedure . 21
7.5.3 Reporting of the results . 22
7.6 Electric strength of substrate side . 22
7.6.1 Test piece . 22
7.6.2 Procedure . 22
7.6.3 Reporting of the results . 22
Bibliography . 23
Figure 1 – Test piece type A (I-shape test piece) . 9
Figure 2 – Test piece type B (U-shape test piece) . 10
Figure 3 – Setting and circuit for the test piece type A . 11
Figure 4 – Setting and circuit for the test piece type B . 12
Figure 5 – Example of test piece being stretched (test piece type A) . 13
Figure 6 – Test piece type A with cover insulator . 15
Figure 7 – Test piece type B with cover insulator . 15
Figure 8 – Test piece for insulation resistance between conductive lines . 17
Figure 9 – Test piece for electric strength between conductive lines . 18
Figure 10 – Test piece for insulation resistance of insulating layer . 19
Figure 11 – Setting for the test piece . 20
Figure 12 – Setting and circuit for cover insulation layer . 20
Figure 13 – Setting and circuit for insulation resistance of substrate . 22
– 4 – IEC 62899-202-4:2021 © IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
PRINTED ELECTRONICS –
Part 202-4: Materials – Conductive ink – Measurement methods
for properties of stretchable printed layers (conductive and insulating)
FOREWORD
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International Standard IEC 62899-202-4 has been prepared by IEC technical committee 119:
Printed electronics.
This International Standard is to be used in conjunction with IEC 62899-202:2016.
The text of this International Standard is based on the following documents:
Draft Report on voting
119/370/FDIS 119/376/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this Internati
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