Färgindustri. (Ordlistor)

Ämnesområden: Färgindustri. (Ordlistor)
Kommittébeteckning: SIS/TK 433 (Färg och lack)
Källa: CEN
Svarsdatum: den 24 sep 2019
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This document specifies a method for the dynamic measurement of the roll-off angle of a liquid drop on a solid surface. From the dynamic measurement, the advancing and receding angles of the drop rolling off can also be determined. The roll-off angle plays a role when evaluating, for example, easy-to-clean or anti-adherent surfaces.

Kommittébeteckning: SIS/TK 433 (Färg och lack)
Källa: CEN
Svarsdatum: den 24 sep 2019
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The ISO 19403 series specifies optical test methods

— for the measurement of the contact angle,

— for the determination of the free surface energy of a solid surface, including the polar and dispersive fractions,

— for the determination of the surface tension of liquids, including the polar and dispersive fractions, and

— for the checking of the measurement arrangement with reference materials.

It can be applied for the characterization of substrates, coatings and coating materials.

The applicability can be restricted for liquids with non-Newtonian rheology1).

This document specifies terms and definitions and defines the general principles.

Ämnesområden: Färgindustri. (Ordlistor)
Kommittébeteckning: SIS/TK 433 (Färg och lack)
Källa: CEN
Svarsdatum: den 24 sep 2019
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This document specifies a test method to measure the contact angle for the determination of the surface free energy of a solid surface. The method can be applied for the characterization of substrates and coatings.

NOTE 1 For the determination of the surface free energy of polymers and coatings, either the method in accordance with Owens, Wendt, Rabel and Kaelble or the method in accordance with Wu is used preferably.

NOTE 2 The morphological and chemical homogeneity have an influence on the measuring results.

NOTE 3 The procedures indicated in this document are based on the state-of-the-art employing the drop projection method in penumbral shadow. Other methods are not excluded.

NOTE 4 Measuring the contact angle on powders is not part of this document. For further information, see the bibliography.

Ämnesområden: Färgindustri. (Ordlistor)
Kommittébeteckning: SIS/TK 433 (Färg och lack)
Källa: CEN
Svarsdatum: den 24 sep 2019
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This document specifies a test method to measure the surface tension of liquids with an optical method using the pendant drop. The method can be applied for the characterization of liquid coating materials. The applicability can be restricted for liquids with non-Newtonian rheology1).

NOTE For other methods to determine the surface tension, see e.g. EN 14370 and ISO 1409.

Ämnesområden: Färgindustri. (Ordlistor)
Kommittébeteckning: SIS/TK 433 (Färg och lack)
Källa: CEN
Svarsdatum: den 24 sep 2019
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This document specifies a test method to determine the polar and dispersive fraction of the surface tension of liquids with optical methods. The method can be applied for the characterization of liquid coating materials, especially when drying effects occur during measurement. The applicability can be restricted for liquids with non-Newtonian rheology1).

This document assumes that the information of surface tension of the liquid to be tested, as well as at least one suitable reference liquid, is known.

Ämnesområden: Färgindustri. (Ordlistor)
Kommittébeteckning: SIS/TK 433 (Färg och lack)
Källa: CEN
Svarsdatum: den 24 sep 2019
Se merSe mindre
 

This document specifies a test method to determine the polar and dispersive fractions of the surface tension of liquids by optical methods. The method can be applied for the characterization of liquid coating materials.

The applicability can be restricted for liquids with non-Newtonian rheology1).

This document assumes that the information of surface tension of the liquid to be tested and the surface free energy of the dispersive reference solids is known.

Ämnesområden: Färgindustri. (Ordlistor)
Kommittébeteckning: SIS/TK 433 (Färg och lack)
Källa: CEN
Svarsdatum: den 24 sep 2019
Se merSe mindre
 

This document specifies a method to measure the dynamic contact angle with an optical method. The advancing and the receding angles are determined.

By means of this defined measurement, the wetting and dewetting properties can be characterized. It can also be concluded on the morphological and chemical homogeneity of interfaces.

.