IEC 62899-204:2019

IEC 62899-204 ®
Edition 1.0 2019-05
INTERNATIONAL
STANDARD
colour
inside
Printed electronics –
Part 204: Materials – Insulator ink – Measurement methods of properties of
insulator inks and printed insulating layers
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IEC 62899-204 ®
Edition 1.0 2019-05
INTERNATIONAL
STANDARD
colour
inside
Printed electronics –
Part 204: Materials – Insulator ink – Measurement methods of properties of

insulator inks and printed insulating layers

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.180; 87.080 ISBN 978-2-8322-6910-7

– 2 – IEC 62899-204:2019  IEC 2019
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Atmospheric conditions for evaluation and conditioning . 8
5 Measurement methods of properties of insulator ink . 8
5.1 General . 8
5.2 Physical properties . 9
5.2.1 Density . 9
5.2.2 Rheology . 9
5.2.3 Surface tension . 10
5.2.4 Flash point . 11
6 Measurement of properties of the insulating layer . 12
6.1 General . 12
6.1.1 Overview . 12
6.1.2 Test methods for insulating layer . 12
6.1.3 Test piece . 12
6.1.4 Substrate . 13
6.1.5 Insulator ink . 13
6.1.6 Dimensions of test piece . 13
6.1.7 Preparation of test piece . 13
6.2 Electrical properties . 13
6.2.1 Volume resistivity . 13
6.2.2 Dielectric constant . 15
6.2.3 Electric strength . 17
6.3 Optical properties . 18
6.3.1 Overview . 18
6.3.2 Luminous transmittance . 18
6.3.3 Chromaticity . 18
6.3.4 Uniformity of colour . 19
6.3.5 Haze . 20
6.3.6 Refractive index . 21
7 Storage . 21
7.1 Storage condition . 21
7.2 Method for measuring deterioration due to storage . 21
7.3 Report of the results . 21
Bibliography . 22

Figure 1 – Calculation of the surface tension of the droplet . 11
Figure 2 – Example of measuring electrodes. 14
Figure 3 – Calculation the dielectric constant . 16

Table 1 – Test methods for insulator ink . 9
Table 2 – Test methods for insulating layer . 12

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
PRINTED ELECTRONICS –
Part 204: Materials – Insulator ink –
Measurement methods of properties of
insulator inks and printed insulating layers

FOREWORD
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International Standard IEC 62899-204 has been prepared by IEC technical committee 119:
Printed Electronics.
The text of this standard is based on the following documents:
FDIS Report on voting
119/256/FDIS 119/268/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

– 4 – IEC 62899-204:2019  IEC 2019
A list of all parts in the IEC 62899 series, published under the general title Printed electronics,
can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
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INTRODUCTION
The IEC 62899 series deals mainly with evaluation methods for materials of printed
electronics. The series also includes storage methods, packaging and marking, and
transportation conditions.
The IEC 62899 series is divided into several parts according to each material. Each part is
prepared as a generic specification containing fundamental information for the area of printing
electronics.
The IEC 62899 series consists of the following parts:
Part 1: Terminology
Part 201: Materials – Substrates
Part 202: Materials – Conductive ink
Part 203: Materials – Semiconductor ink
Part 250: Material technologies required in printed electronics for wearable smart devices
Part 301-X: Equipment – Contact printing – Rigid master
Part 302-X: Equipment – Inkjet
Part 303-X: Equipment – Roll-to-roll printing
Part 401: Printability – Overview
Part 402-X: Printability – Measurement of qualities
Part 403-X: Printability – Requirements for reproducibility
Part 502-X: Quality assessment – Organic light emitting diode (OLED) elements
Furthermore, sectional specifications, blank detail specifications, and detail specifications for
each material will be based on these par
...