About CEN
The European Committee for Standardization is one of three European Standardization Organizations (together with CENELEC and ETSI) that have been officially recognized by the European Union and by the European Free Trade Association (EFTA) as being responsible for developing and defining voluntary standards at European level.
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Project
| Reference | CEN ISO/TR 19402:2020 |
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| Title | Paints and varnishes - Adhesion of coatings (ISO/TR 19402:2018) |
| Work Item Number | 00139693 |
| Abstract/Scope | This document summarises the common methods for evaluating the adhesive strength of coatings on a substrate, which can be another coating beneath or the substrate itself. The test methods and evaluation methods are described in Clauses 4, 5, and 6. In the case of standardized test methods the respective standard is referenced in regard to procedure and evaluation. Annex A compares the methods in the synoptic Tables A.1, A.2, and A.3. Often the adhesive strength cannot be sufficiently evaluated by means of a single method. The purely physical methods for measuring the adhesive strength are such in which mechanical quantities (e.g. force or torsion moment) are measured directly. All other methods are based on the evaluation of behaviour under mechanic stress according to practical conditions. For these methods the viscoelastic properties have a wide influence on the evaluation of the adhesive strength, so that it can only be tested comparatively within one method. Each method has its specific application. An unsuitable method can lead to false information. All of the test methods for the evaluation of the adhesive strength require a certain routine of the test person, especially in regard to identifying the separation line. For most of the test methods the test results, among other things, depend on the film thickness of the coating to be tested. In addition, for several methods differences between tests on a test sheet and in practice can occur, due to different roughness of the substrate. Effects of delamination caused by weathering or corrosion influences are not subject of this document. In case cohesion failures predominantly occur during an adhesive strength test, this is no measure for the adhesive strength. However, information can be given on the protective effect of the coating against corrosion. |
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Published
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| Reference Document |
ISO/TR 19402:2018 (EQV)
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| date of Availability (DAV) | 2020-10-07 |
| ICS | 87.040 - Paints and varnishes |
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Legal
| Directive(s) | |
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| Mandate(s) | |
| Citation in OJEU |
Implementation Dates
| date of Ratification (DOR) (1) | 2020-10-04 |
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| date of Availability (DAV) (2) | 2020-10-07 |
| date of Announcement (DOA) (3) | |
| date of Publication (DOP) (4) | |
| date of Withdrawal (DOW) (5) |
Relations
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| Normative reference (6) | |
| Bibliographic references (7) |
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(1) Date of ratification (dor) date when the Technical Board notes the approval of an EN (and HD for CENELEC), from which time the standard may be said to be approved
(2) Date of availability (dav) date when the definitive text in the official language versions of an approved CEN/CENELEC publication is distributed by the Central Secretariat
(3) Date of announcement (doa) latest date by which the existence of an EN (and HD for CENELEC), a TS or a CWA has to be announced at national level
(4) Date of publication (dop) latest date by which an EN has to be implemented at national level by publication of an identical national standard or by endorsement
(5) Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn
(6) This list of normative references is purely indicative. The only official list of normative reference is the list of the published standard.
In the case of undated standard, a link to the last dated version is provided.
In the case of series, a link to each standard identified in the series is provided.
We also invite you to check (via the website) whether corrigenda and/or amendments shall be read in conjunction with the main standard.
(7) This list of bibliographic references, which is provided for homegrown standards only, is purely indicative and was retrieved automatically using available XML files. It is limited to publications that have been published in the XML format. For standards that are not homegrown, the corresponding international standard should be consulted.