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ASTM D5125-97(2005)

(Test Method)

Standard Test Method for Viscosity of Paints and Related Materials by ISO Flow Cups

Standard Test Method for Viscosity of Paints and Related Materials by ISO Flow Cups

SIGNIFICANCE AND USE
This test method is useful for the determination of package and application viscosities of paints and other coatings. It is limited to Newtonian or near-Newtonian liquids.
This test method may be used similarly to ISO 2431 in conjunction with flashpoint to determine the hazard grouping of viscous liquids in international regulations.
SCOPE
1.1 This test method covers the determination of the flow time (viscosity) of Newtonian and near-Newtonian paints, and related coatings and products using ISO capillary flow cups.
Note 1—If the liquid is non-Newtonian, that is shear-thinning or thixotropic, Test Methods D 2196 should be used.
1.2 The cup-orifice combination (ISO cup with orifice diameter of 3 mm, 4 mm, 5 mm, or 6 mm) is selected to provide an efflux time with the range of 20 to 100 s and viscosities up to 700 cSt (700 mm2/s). The most commonly used cup is the one with the 4-mm orifice.
1.3 This test method is limited to testing materials for which the breakpoint of the flow from the orifice of the flow cup can be determined with certainty. This point is difficult to determine and reproduce for materials with flow times in excess of 100 s due to slowing-down effects.
1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.5 This standard does not purport to address the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Note 2—The International Civil Aviation Organization (ICAO) and the International Maritime Organization (IMO) include in their regulations a similar test (ISO 2431) to determine the viscosity of hazardous viscous liquids. The viscosity is then used to place these liquids in a hazard packaging group depending on their viscosity/flashpoint relationship. The U. S. Department of Transportation permits the use of these regulations for transhipment of hazardous material within the U.S. when bound for foreign destinations.

General Information

Status
Historical
Publication Date
14-May-2005
ICS
87.040 - Paints and varnishes
Technical Committee
D01 - Paint and Related Coatings, Materials, and Applications
Drafting Committee
D01.24 - Physical Properties of Liquid Paints & Paint Materials
Current Stage
Ref Project

Relations

Replaces
ASTM D5125-97 - Standard Test Method for Viscosity of Paints and Related Materials by ISO Flow Cups
Effective Date
15-May-2005
Referred By
ASTM C1708/C1708M-19 - Standard Test Methods for Self-leveling Mortars Containing Hydraulic Cements
Effective Date
15-May-2005

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ASTM D5125-97(2005) - Standard Test Method for Viscosity of Paints and Related Materials by ISO Flow CupsASTM D5125-97(2005) - Standard Test Method for Viscosity of Paints and Related Materials by ISO Flow Cups
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ASTM D5125-97(2005) - Standard Test Method for Viscosity of Paints and Related Materials by ISO Flow Cups
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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:D5125–97(Reapproved2005)
Standard Test Method for
1
Viscosity of Paints and Related Materials by ISO Flow Cups
This standard is issued under the fixed designation D5125; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2. Referenced Documents
3
1.1 This test method covers the determination of the flow 2.1 ASTM Standards:
time (viscosity) of Newtonian and near-Newtonian paints, and D2196 Test Methods for Rheological Properties of Non-
related coatings and products using ISO capillary flow cups. Newtonian Materials by Rotational (Brookfield type) Vis-
cometer
NOTE 1—If the liquid is non-Newtonian, that is shear-thinning or
D3924 Specification for Environment for Conditioning and
thixotropic, Test Methods D2196 should be used.
Testing Paint, Varnish, Lacquer, and Related Materials
1.2 The cup-orifice combination (ISO cup with orifice
D3925 Practice for Sampling Liquid Paints and Related
2
diameter of 3 mm, 4 mm, 5 mm, or 6 mm) is selected to
Pigmented Coatings
provide an efflux time with the range of 20 to 100 s and
E1 Specification for ASTM Liquid-in-Glass Thermometers
2
viscosities up to 700 cSt (700 mm /s). The most commonly
2.2 ISO Documents:
used cup is the one with the 4-mm orifice.
ISO 2431 Paints and Varnishes: Determination of Flow
1.3 Thistestmethodislimitedtotestingmaterialsforwhich
4
Time by Use of a Flow Cup
the breakpoint of the flow from the orifice of the flow cup can
be determined with certainty. This point is difficult to deter-
3. Terminology
mine and reproduce for materials with flow times in excess of
3.1 Definitions:
100 s due to slowing-down effects.
3.1.1 dynamic viscosity, n—the ratio of the applied shear
1.4 The values stated in SI units are to be regarded as
stress to shear rate.
standard. The values given in parentheses are for information
3.1.1.1 Discussion—TheSIunitfordynamicviscosityisthe
only.
pascal second (Pas). The traditional unit is the centipoise (cP);
1.5 This standard does not purport to address the safety
1 cP = 1 mPas.
concerns, if any, associated with its use. It is the responsibility
3.1.2 flow time, n—the elapsed time from the moment when
of the user of this standard to establish appropriate safety and
the material under test starts to flow from the orifice of the
health practices and determine the applicability of regulatory
filled cup to the moment when the flow stream of material first
limitations prior to use.
breaks close to the orifice.
3.1.3 kinematic viscosity, n—the ratio of the dynamic vis-
NOTE 2—TheInternationalCivilAviationOrganization(ICAO)andthe
International Maritime Organization (IMO) include in their regulations a
cosity to the density of the liquid.
similar test (ISO 2431) to determine the viscosity of hazardous viscous
3.1.3.1 Discussion—The SI unit for kinematic viscosity is
liquids. The viscosity is then used to place these liquids in a hazard 2
the square metre per second (m /s). The traditional unit is the
packaging group depending on their viscosity/flashpoint relationship. The
2
centistokes (cSt); 1 cSt = 1 mm /s.
U.S.DepartmentofTransportationpermitstheuseoftheseregulationsfor
3.1.4 near-Newtonian liquid, n—a liquid in which the
transhipment of hazardous material within the U.S. when bound for
variation of viscosity with shear rate is small and the effect on
foreign destinations.
viscosity of mechanical disturbances such as stirring is negli-
gible.
1
This test method is under the jurisdiction of ASTM Committee D01 on Paint
and Related Coatings, Materials, andApplications and is the direct responsibility of
3
Subcommittee D01.24 on Physical Properties of Liquid Paints & Paint Materials. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved May 15, 2005. Published June 2005. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1991. Last previous edition approved in 1997 as D5125 – 97. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/D5125-97R05. the ASTM website.
2 4
An ISO-type cup with an orifice diameter of 8 mm is available, but it is not Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
listed in ISO 2431 and precision and accuracy are not known. 4th Floor, New York, NY 10036, http://www.ansi.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D5125–97 (2005)
3.1.5 Newtonian liquid, n—aliquidinwhichtheviscosityis 6.5 Flat Glass Plate or Straight-
...

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