Färgindustrin

Ämnesområden: Färg och lack
Kommittébeteckning: SIS/TK 433 (Färg och lack)
Källa: ISO
Svarsdatum: den 1 nov 2020
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This document specifies a method for determining the re-solving effect of electro-deposition coatings.

It applies to electro-deposition coatings for automotive industries and other general industrial applications, e.g. chiller units, consumer products, radiators, aerospace, agriculture, etc.

Ämnesområden: Färg och lack
Kommittébeteckning: SIS/TK 433 (Färg och lack)
Källa: CEN
Svarsdatum: den 1 dec 2020
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This document specifies a method for determining the mass portion in per cent (%) of a sprayed coating powder which is deposited on a test item under known spray gun and environmental conditions.

The method is applicable to powders applied by corona or tribo charging and may be used to compare the deposition efficiency of different powders with the same or different gun with the same powder.

This method should only be used for comparison when powders or guns are evaluated consecutively, as the influence of the environment and the equipment can vary significantly with time and location.

Ämnesområden: Färg och lack
Kommittébeteckning: SIS/TK 433 (Färg och lack)
Källa: CEN
Svarsdatum: den 1 dec 2020
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This document specifies a method for the determination of density for all types of coating powders using a gas comparison pycnometer.

Ämnesområden: Färg och lack
Kommittébeteckning: SIS/TK 433 (Färg och lack)
Källa: CEN
Svarsdatum: den 1 dec 2020
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This document specifies a liquid displacement pycnometer method for the determination of the density of coating powders. The method is based on a determination of the mass and the volume of a test portion.

Coating powders with density < 1 g/cm3, may be measured in accordance with ISO 1183-1 and the appropriate method, by agreement.

Ämnesområden: Färg och lack
Kommittébeteckning: SIS/TK 433 (Färg och lack)
Källa: CEN
Svarsdatum: den 1 dec 2020
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This document specifies a method for estimating the flow properties of a mixture of coating powder and air. The method reflects commercial practice in the application of coating powders.

The results obtained are influenced by the composition of the coating powder, its density, particle size distribution and particle shape, together with the tendency of the particles to agglomerate and to accept a charge.

Ämnesområden: Färg och lack
Kommittébeteckning: SIS/TK 433 (Färg och lack)
Källa: CEN
Svarsdatum: den 1 dec 2020
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This document specifies a method for determining the time for a thermosetting coating powder to gel at a specified temperature. A method is described for checking batch to batch variation and for the quality control of a given coating powder.

The gel time determined by this method is not directly related to the time for a coating powder to cure in practical applications.

The method is not applicable to coating powders with ultra-short gel times (less than 15 s).

Ämnesområden: Färg och lack
Kommittébeteckning: SIS/TK 433 (Färg och lack)
Källa: CEN
Svarsdatum: den 1 dec 2020
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This document establishes a method for the estimation of the storage stability of thermosetting coating powders. It provides the procedures for determining the changes both in the physical state of a thermosetting coating powder and in its chemical reactivity, together with its capacity to form a satisfactory final coating. A correlation between changes in different properties is not to be expected. Similarly, there may be no correlation between the results obtained under different storage conditions.

The results of the procedures in this document give an indication of the ability of the coating powder to withstand the effects of storage prior to application.