Standard Technical reports · SIS-ISO/TR 20659-2:2024

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

Status: Withdrawn

· Replaced by: SIS-CEN ISO/TR 20659-2:2024
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Standard Technical reports · SIS-ISO/TR 20659-2:2024

Rheological test methods — Fundamentals and interlaboratory comparisons — Part 2: Determination of the time-dependent structural change (thixotropy) (SIS-ISO/TR 20659-2:2024, IDT)
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Scope
This document gives information on an interlaboratory comparison for the determination of the timedependent
structural change (thixotropy) using rheological test methods. Thixotropy is the reversible, timedependent
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 Technical reports · SIS-ISO/TR 20659-2:2024

Rheological test methods — Fundamentals and interlaboratory comparisons — Part 2: Determination of the time-dependent structural change (thixotropy) (SIS-ISO/TR 20659-2:2024, IDT)
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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-82085696

Edition: 1

Approved: 3/18/2024

No of pages: 42

Replaced by: SIS-CEN ISO/TR 20659-2:2024