ASTM D6267-05
(Test Method)Test Method for Apparent Viscosity of Hydrocarbon Resins at Elevated Temperatures
Test Method for Apparent Viscosity of Hydrocarbon Resins at Elevated Temperatures
SIGNIFICANCE AND USE
This test method is used to measure the apparent viscosity of hydrocarbon resins at elevated temperatures. Elevated temperature viscosity values of a hydrocarbon resin may be related to the properties of coatings, adhesives and the like, containing such a resin.
For hydrocarbon resins, values of apparent viscosity will usually be a function of shear rate under the conditions of test. Although the viscometer described in this test method operates under conditions of relatively low shear rate, shear rate depends on the spindle and rotational speed selected for a determination; therefore, comparisons between apparent viscosity values should be made only for measurements made with similar viscometers under conditions of equivalent shear rate.
Approximate shear rates using various spindles are shown in Table A1.1 in Annex A1 to this procedure.
SCOPE
1.1 This test method covers the determination of the apparent viscosity of hydrocarbon resins having apparent viscosities up to 2 000 000 millipascal seconds (mPas) (Note 0) at temperatures up to 300C (572F).Note 0
The SI unit of (dynamic) viscosity is the pascal second. The centipoise (cP) is one millipascal second (mPas) and is frequently used as a viscosity unit.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
This standard does not purport to address all of 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.
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Designation:D6267–05
Standard Test Method for
Apparent Viscosity of Hydrocarbon Resins at Elevated
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Temperatures
This standard is issued under the fixed designation D 6267; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 4. Summary of Test Method
1.1 This test method covers the determination of the appar- 4.1 The viscometer described in this test method can be
ent viscosity of hydrocarbon resins having apparent viscosities used to determine the apparent viscosity of hydrocarbon resins
up to 2 000 000 millipascal seconds (mPa·s) (Note 1)at at elevated temperatures. Apparent viscosity is determined
temperatures up to 300°C (572°F). under temperature equilibrium conditions using a rotating
spindle type viscometer. The torque on a spindle rotating in a
NOTE 1—The SI unit of (dynamic) viscosity is the pascal second. The
thermostatted sample holder containing a small amount of
centipoise (cP) is one millipascal second (mPa·s) and is frequently used as
sample is used to measure the relative resistance to rotation.A
a viscosity unit.
factor is applied to the torque reading to yield the viscosity in
1.2 The values stated in SI units are to be regarded as the
mPa·s.
standard. The values given in parentheses are for information
only.
5. Significance and Use
1.3 This standard does not purport to address all of the
5.1 This test method is used to measure the apparent
safety concerns, if any, associated with its use. It is the
viscosity of hydrocarbon resins at elevated temperatures.
responsibility of the user of this standard to establish appro-
Elevated temperature viscosity values of a hydrocarbon resin
priate safety and health practices and determine the applica-
may be related to the properties of coatings, adhesives and the
bility of regulatory limitations prior to use.
like, containing such a resin.
5.2 For hydrocarbon resins, values of apparent viscosity
2. Referenced Documents
will usually be a function of shear rate under the conditions of
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2.1 ASTM Standards:
test. Although the viscometer described in this test method
D 6440 Terminology Relating to Hydrocarbon Resins
operates under conditions of relatively low shear rate, shear
E1 Specification forASTM Liquid-in-Glass Thermometers
rate depends on the spindle and rotational speed selected for a
E 691 Practice for Conducting an Interlaboratory Study to
determination; therefore, comparisons between apparent vis-
Determine the Precision of a Test Method
cosity values should be made only for measurements made
with similar viscometers under conditions of equivalent shear
3. Terminology
rate.
3.1 The definitions inTerminology D 6440 are applicable to
5.3 Approximate shear rates using various spindles are
this test method.
shown in Table A1.1 in Annex A1 to this procedure.
3.2 Definition Specific to This Standard:
3.3 apparent viscosity, n—of a hydrocarbon resin, the
6. Apparatus
viscosity determined by this test method, expressed in milli-
6.1 Rotational Viscometer—rotating-spindle type with lev-
pascal seconds.
eling stand.
3.3.1 Discussion—Its value may vary with the spindle and
6.2 Viscometer Spindles, stainless steel. (Warning—Care
rotational speed selected.
must be taken in the storage and handling of spindles and
assemblies. Protect them from scratches, dust, corrosion or
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deposits, and mechanical abuse. Replace the spindle extension
This test method is under the jurisdiction of ASTM Committee D01 on Paint
and Related Coatings, Materials , andApplications and is the direct responsibility of if it is bent.Avoid touching the calibrated section of the spindle
Subcommittee D01.38 on Hydrocarbon Resins.
with hands. Clean the spindle and sample chamber thoroughly
Current edition approved Jan. 1, 2005. Published February 2005. Originally
after each use.Arecommended cleaning procedure is included
approved in 1998. Last previous edition approved in 1998 as D 6267 – 98.
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in the procedure.)
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
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D6267–05
6.3 Temperature Controller, Thermocontainer (a heater for level required for proper immersion depth. Do not permit the
the sample chamber), and Sample Chamber, designed for use thermometer bulb to rest on the bottom of the sample con-
with the vis
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