Standard: TAPPI T 697

ACCELERATED TEST FOR VISCOSITY STABILITY OF CLAY SLURRIES

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Scope:

This method describes a procedure for predicting the relative storage life of aqueous kaolin clay dispersions by measuring viscosity increase during storage at an elevated temperature.

Viscosity is measured by a low-shear rotating spindle apparatus as described in Appendix A of TAPPI T 648 "Viscosity of Coating Clay Slurry."

This procedure does not describe methods for determining dispersant requirements of clays, nor does it describe dry clay slurrying procedures. It describes only the testing procedures for a given clay slurry.

This procedure does not describe a method for determining the viscosity stability of other pigment slurries or for coating colors; however, this method may be useful for such systems.

Organization: TAPPI
Document Number: tappi t 697
Publish Date: 2012-01-01
Page Count: 4
Change Type: COMPLETE REVISION
Available Languages: EN
DOD Adopted: NO
ANSI Approved: NO
Most Recent Revision: YES
Current Version: YES
Status: Active
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