ISO/TS 19392-6:2023

TECHNICAL ISO/TS
SPECIFICATION 19392-6
First edition
2023-02
Paints and varnishes — Coating
systems for wind-turbine rotor
blades —
Part 6:
Determination and evaluation of ice
adhesion using centrifuge
Peintures et vernis — Matériaux de revêtement pour pales de turbines
éoliennes —
Partie 6: Détermination et évaluation de l'adhésion de la glace à
l'aide d'une centrifugeuse
Reference number
© ISO 2023
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ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Apparatus . 2
6 Sampling . 2
7 Test panels .3
7.1 Substrate . 3
7.2 Preparation . 3
7.3 Conditioning. 3
7.4 Coating thickness . 3
7.5 Roughness of coating . 4
8 Procedure .4
8.1 Number of determinations . 4
8.2 Examination before exposure . . 4
8.3 Sample preparation (ice formation) . 4
8.4 Ice adhesion testing . 5
8.5 Examination after testing . 5
9 Ev a luat ion . 5
10 Precision . 6
11 Test report . 6
Annex A (informative) Example of parameters for ice formation processes .7
Bibliography . 8
iii
Foreword
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electrotechnical standardization.
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This document was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee
SC 9, General test methods for paints and varnishes.
A list of all parts in the ISO 19392 series can be found on the ISO website.
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iv
Introduction
Ice accretion on rotor blade surfaces of wind turbines can decrease the efficiency and limit the
performance of wind turbines in cold, humid environments. Ice formation can also lead to damage of
the rotor blade and can be hazardous, if ice falls off the blade. Icephobic coatings (“icephobics”) can
be applied to rotor blade surfaces to reduce or prevent the adhesion of ice by removing ice prior to
reaching a critical ice mass for the rotor blades. They can also increase the efficiency of thermal ice
protection systems.
v
TECHNICAL SPECIFICATION ISO/TS 19392-6:2023(E)
Paints and varnishes — Coating systems for wind-turbine
rotor blades —
Part 6:
Determination and evaluation of ice adhesion using
centrifuge
1 Scope
This document describes a method to measure ice adhesion from artificial ice on test substrates by
using a centrifuge. Basic ice types are defined and test parameters for the ice removal are described
to achieve reproducibility of test results for ice adhesion measurements for rotor blade coatings. This
document does not intend to provide fixed test parameter to account for the diversity of relevant icing
scenarios in this field of application.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 1513, Paints and varnishes — Examination and preparation of test samples
ISO 4618, Paints and varnishes —Vocabulary
ISO 15528, Paints, varnishes and raw materials for paints and varnishes — Sampling
ISO 21920-2, Geometrical product specifications (GPS) — Surface texture: Profile — Part 2: Terms,
definitions and surface texture parameters
SAE ARP 5905, Calibration and Acceptance of Icing Wind Tunnels
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 4618 and the following apply.
ISO and IEC maintain terminology 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/
3.1
static ice
ice created at a surface from liquid water with no dynamic effects
3.2
impact ice
ice that forms on surfaces from impacting supercooled water droplets (velocity >40 m/s)
...