ISO 1419:2019

INTERNATIONAL ISO
STANDARD 1419
Fourth edition
2019-05
Rubber- or plastics-coated fabrics —
Accelerated-ageing tests
Supports textiles revêtus de caoutchouc ou de plastique — Essais de
vieillissement accéléré
Reference number
©
ISO 2019
© ISO 2019
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Published in Switzerland
ii © ISO 2019 – All rights reserved

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Method A: Loss of volatiles on heating of plasticized-PVC-coated fabrics .1
4.1 General . 1
4.2 Apparatus . 2
4.3 Preparation of test pieces . 2
4.4 Conditioning and determination of mass . 2
4.5 Procedure . 2
4.6 Expression of results . 3
4.7 Test report . 3
5 Method B: General method . 3
5.1 General . 3
5.2 Apparatus . 3
5.3 Test pieces . 3
5.4 Procedure . 4
5.5 Assessment . 4
5.6 Test report . 4
6 Method C: Tropical test . 4
6.1 General . 4
6.2 Apparatus . 4
6.3 Test pieces . 5
6.4 Procedure . 5
6.5 Assessment . 5
6.6 Test report . 5
7 Method D: Ageing test for nitrocellulose-type coatings . 5
7.1 General . 5
7.2 Apparatus . 5
7.3 Preparation test pieces . 6
7.4 Procedure . 6
7.5 Test report . 6
Foreword
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different types of ISO documents should be noted. This document was drafted in accordance with the
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www .iso .org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 45, Rubber and rubber products,
Subcommittee SC 4, Products other than hoses.
This fourth edition cancels and replaces the third edition (ISO 1419:2018), of which it constitutes a
minor revision.
The main changes compared to the previous edition are as follows:
— the sentence in 6.2.1 and 6.4 has been changed to ‘relative humidity of not less than 95 %’.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/members .html.
iv © ISO 2019 – All rights reserved

Introduction
The ageing of coated fabrics consists in subjecting test pieces, with previously determined properties,
to a controlled deteriorating influence for a known period. The selection of the most appropriate test
method(s), ageing time and temperature will depend on the purpose of the test and the type of coated
fabric. The properties used to measure the deterioration of coated fabrics may be strength properties,
flexing, blocking or any other desired physical or chemical property. By selection of appropriate
methods of test, the properties can be investigated.
INTERNATIONAL STANDARD ISO 1419:2019(E)
Rubber- or plastics-coated fabrics — Accelerated-ageing
tests
WARNING — Persons using this document should be familiar with normal laboratory practice.
This document does not purport to address all of the safety problems, if any, associated with its
use. It is the responsibility of the user to establish appropriate safety and health practices and to
ensure compliance with any national regulatory conditions.
1 Scope
This document describes four methods of assessing the resistance of coated fabrics to deterioration by
accelerated ageing.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 188, Rubber, vulcanized or thermoplastic — Accelerated ageing and heat resistance tests
ISO 2231, Rubber- or plastics-coated fabrics — Standard atmospheres for conditioning and testing
ISO 2286-1, Rubber- or plastics-coated fabrics — Determination of roll characteristics — Part 1: Methods
for determination of length, width and net mass
ISO 2286-2, Rubber- or plastics-coated fabrics — Determination of roll characteristics — Part 2: Methods
for determination of total mass per unit area, mass per unit area of coating and mass per unit area of
substrate
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https: //www .iso .org/obp
— IEC Electropedia: available at http: //www .electropedia .org/
4 Method A: Loss of volatiles on heating of plasticized-PVC-coated fabrics
4.1 General
As a result of natural ageing, PVC-coated fabrics may lose plasticizer by volatilization, and in time
this will have an adverse effect on the performance of the coating. The extent to which a particular
material will be so affected will depend on the formulation of the coating, so it is desirable to assess this
property. The method described is designed to accelerate the loss of volatiles by exposing test pieces to
an elevated temperature, followed by determination of the loss in mass of the coating. The procedure
shall be in accordance with ISO 188.
4.2 Apparatus
4.2.1 Air oven
It shall have slow circulation of air, providing not less than three and not more than ten air changes per
hour. It shall have provisions for controlling and measuring the rate of airflow and for maintaining and
measuring the desired temperature and relative humidity, if necessary.
There shall be provisions for suspending the test pieces vertically within the oven. During the ageing
process, in order to prevent individual test pieces touching each other or the inner walls of the oven and
being exposed to higher temperature, the test pieces shall not be within 10 mm of each other or within
50 mm of the inner surfaces of the oven, The incoming air shall be at the temperature specified before
coming into contact with the test pieces. Any electric elements used for heating the incoming air shall
be shielded to avoid direct radiation on to the test pieces. No copper or copper alloy shall be within the
ageing chamber of the oven. The oven shall be of such a size that the total volume of the test pieces does
not exceed 10 % of the free ai
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