Standard Svensk standard · SIS-CEN ISO/TR 20659-2:2024

Rheological test methods — Fundamentals and interlaboratory comparisons — Part 2: Determination of the time-dependent structural change (thixotropy) (ISO/TR 20659-2:2024, IDT)

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Standard Svensk standard · SIS-CEN ISO/TR 20659-2:2024

Rheological test methods — Fundamentals and interlaboratory comparisons — Part 2: Determination of the time-dependent structural change (thixotropy) (ISO/TR 20659-2:2024, IDT)
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Scope
This document gives information on an interlaboratory comparison for the determination of the time-dependent structural change (thixotropy) using rheological test methods. Thixotropy is the reversible, time-dependent decrease of shear viscosity η at a constant shear rate or shear stress τ.

This document provides examples of fields of application, in which important material properties can be characterized by the thixotropy. These fields of application include:

— effectiveness of rheological additives and thixotropic agents, respectively;
— stability of the structure at rest (e.g. behaviour when starting to pump);
— wet film thickness after processing;
— levelling and sagging behaviour (e.g. without brushmarks or sag formation);
— orientation of effect pigments.

Subjects

Paints and varnishes (87.040)


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Standard Svensk standard · SIS-CEN ISO/TR 20659-2:2024

Rheological test methods — Fundamentals and interlaboratory comparisons — Part 2: Determination of the time-dependent structural change (thixotropy) (ISO/TR 20659-2:2024, IDT)
Subscribe on standards - Read more Dölj
Price: 1 320 SEK
standard ikon pdf

PDF

Price: 1 320 SEK
standard ikon

Paper

Price: 2 112 SEK
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Product information

Language: English

Written by: Svenska institutet för standarder

International title:

Article no: STD-82090555

Edition: 1

Approved: 10/10/2024

No of pages: 44

Replaces: SIS-ISO/TR 20659-2:2024