ISO 19095-6:2021

Plastics - Evaluation of the adhesion interface performance in plastic-metal assemblies - Part 6: Accelerated degradation test

This document specifies the environmental conditions to evaluate the accelerated degradation for the adhesion interface performance in plastic-metal assemblies.

Plastiques — Évaluation des performances de l'interface d'adhérence dans les assemblages plastique-métal — Partie 6: Essai de dégradation accéléré

General Information

• Status: Published
• Publication Date: 28-Jun-2021
• ICS: 83.180 - Adhesives
• Technical Committee: ISO/TC 61/SC 11 - Products
• Drafting Committee: ISO/TC 61/SC 11/WG 5 - Polymeric adhesives
• Current Stage: 6060 - International Standard published
• Start Date: 29-Jun-2021
• Due Date: 09-Aug-2021
• Completion Date: 29-Jun-2021

Overview

ISO 19095-6:2021 - Plastics - Evaluation of the adhesion interface performance in plastic‑metal assemblies - Part 6: Accelerated degradation test - defines environmental conditions and procedures to accelerate and evaluate long‑term degradation at the adhesion interface of plastic‑metal assemblies. The standard is intended to simulate severe heat and moisture exposure (e.g., high temperature and saturated water‑vapour pressure) to assess interface performance in a shortened timeframe while avoiding bulk plastic deformation.

Key topics and technical requirements

• Scope and principle

  • Specifies environmental conditions to evaluate accelerated degradation of adhesion interfaces in plastic‑metal assemblies.
  • Uses elevated temperature and humidity (for example, 120 °C and ~0.2 MPa saturated water vapour pressure) inside a sealed vessel to accelerate ageing.
  • Requires test temperatures to be at least 20 °C below the softening temperature of the plastic to prevent deformation (see Annex C).

• Apparatus

  • Oven with air circulation (±1 °C), sealed pressure vessels/autoclaves (up to ~2.0 MPa) with pressure gauge and purge lines, sterilizers (105–135 °C with saturated steam), vacuum ovens and a balance with 0.1 mg resolution.
  • Safety devices such as relief valves or bursting discs (operating example: 3.5 MPa) are specified.

• Procedure

  • Prepare specimens per ISO 19095‑2 and condition per ISO 19095‑1.
  • Place samples in a pressure vessel avoiding contact with liquid water; add controlled water volume (e.g., 10–20 ml in a 300 ml vessel).
  • Heat to target temperature, purge air at ~100 °C to establish steam atmosphere, maintain for the chosen test period (examples in Annex A: 120 °C for 96–288 h).
  • Cool, re‑condition and evaluate per ISO 19095‑3 (e.g., tensile testing).

• Reporting

  • Test reports must reference ISO 19095‑6:2021 and include specimen identification, heating temperature, duration and operation date.

Applications and who uses it

• Primary users: materials and adhesives engineers, test laboratories, quality assurance teams in automotive, aerospace, electronics and industrial manufacturing where plastic‑to‑metal joints are used.
• Practical uses:
  • Verify long‑term adhesion durability under combined heat and moisture.
  • Screen material systems (polymer + metal + adhesive/surface treatment) for harsh‑environment suitability.
  • Provide traceable, comparable degradation data to support design, qualification and failure‑analysis decisions.

Related standards

• ISO 19095‑1 (conditioning), ISO 19095‑2 (specimen preparation) and ISO 19095‑3 (evaluation methods) - used together to prepare, age and evaluate plastic‑metal adhesion performance.

Keywords: ISO 19095-6:2021, plastics adhesion interface, plastic-metal assemblies, accelerated degradation test, high temperature steam ageing, pressure vessel testing, adhesion durability.

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 19095-6
First edition
2021-06
Plastics — Evaluation of the adhesion
interface performance in plastic-metal
assemblies —
Part 6:
Accelerated degradation test
Plastiques — Évaluation des performances de l'interface d'adhérence
dans les assemblages plastique-métal —
Partie 6: Essai de dégradation accéléré
Reference number
©
ISO 2021
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Apparatus . 1
6 Procedure. 3
6.1 Test specimens of specimens plastic-metal assemblies . 3
6.2 Conditioning of specimens plastic-metal assemblies . 3
6.3 Weighing plastic-metal assemblies . 3
6.4 Plastic-metal assemblies subjected to severe conditions . 3
6.5 Evaluation of plastic-metal assemblies . 3
7 Test reports . 3
Annex A (informative) Example of severe condition tests of plastic-metal assemblies .4
Annex B (informative) Example of tests of plastic-metal assemblies in the pressure vessel .5
Annex C (informative) Example of effect of heating on ordinary plastics. 6
Bibliography .10
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 11,
Products.
A list of all parts in the ISO 19095 series can be found on the ISO website.
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 2021 – All rights reserved

Introduction
Structures of heterogeneous materials are being manufactured in the automotive and aerospace
industry sectors, where higher safety margins are required. The existing test methods are not
appropriate because the evaluation of the adhesive interface is difficult, as the polymer material has a
relatively low mechanical strength and therefore fractures outside the joints. Therefore, it is necessary
to develop a methodology for the evaluation of the adhesive interfaces. A test method to accurately
evaluate the adhesion interface performance or standardization of long-term evaluation under harsh
environments is also necessary. The method in ISO 19095 is intended to ensure that the integrity of the
joint is realized through the interface and that traceability of the value improves the data comparison.
This document defines the conditions to evaluate the long-term durability which cannot be evaluated
using ISO 19095-4.
INTERNATIONAL STANDARD ISO 19095-6:2021(E)
Plastics — Evaluation of the adhesion interface
performance in plastic-metal assemblies —
Part 6:
Accelerated degradation test
SAFETY STATEMENT — Persons using this document should be familiar with normal laboratory
practice, if applicable. 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. It is recognized that some of the materials permitted in this document
might have a negative environmental impact. As technological advances lead to more acceptable
alternatives for such materials, they will be eliminated to the greatest extent possible. At the
end of the test, care should be taken to dispose of all waste in an appropriate manner.
1 Scope
This document specifies the environmental conditions to evaluate the accelerated degradation for the
adhesion interface performance in plastic-metal assemblies.
2 Normative references
There are no normative references in this document.
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 https:// www .electropedia .org/
4 Principle
To evaluate the degradation of plastic-metal assemblies under severe conditions in a shorter period of
time, the assemblies are subjected to a higher temperature and a higher humidity conditions such as
120 °C and 0,2 MPa of saturated water vapour pressure without air (oxygen) gas (see Annex B).
This method should be used at temperature at least 20 °C lower than softening temperature in order to
avoid deformation (see Annex C).
5 Apparatus
5.1 Oven, capable of heating to 200 °C for test samples or sealed pressure vessels connected to
pressure gauge and purge lines settled outside oven, with temperature control system (±1 °C).
To control the temperature uniformly inside the oven, an air circulation heating system should be used.
If conditions of 120 °C and 0,2 MPa of saturated water vapor pressure is used, a sterilizer (see 5.5) can
be used instead of oven and sealed pressure vessels.
ISO 19095-6:202
...