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  • BSI
    PD CEN ISO/TR 20659-2:2024 Rheological test methods. Fundamentals and interlaboratory comparisons - Determination of the time-dependent structural change (thixotropy)
    Edition: 2024
    $442.60
    / user per year

Description of PD CEN ISO/TR 20659-2:2024 2024

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.

Standard NumberPD CEN ISO/TR 20659-2:2024
TitleRheological test methods. Fundamentals and interlaboratory comparisons - Determination of the time-dependent structural change (thixotropy)
StatusDefinitive
Publication Date2024-10-11
Identical National Standard OfCEN/TR 20659-2, ISO/TR 20659-2:2024
CorrectsPD ISO/TR 20659-2:2024
DescriptorsYield-point determination, Rheological properties, Physics, Testing methods, Fluid mechanics, Mechanical properties of fluids
ICS87.040 Paints and varnishes
CommitteeSTI/28
ISBN978 0 539 32159 3
PublisherBSI
Pages44

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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