ASTM D1824-95(2010)

Standard Test Method for Apparent Viscosity of Plastisols and Organosols at Low Shear Rates

SIGNIFICANCE AND USE
The suitability of a dispersion resin for any given application process is dependent upon its viscosity characteristics.
The viscosity defines the flow behavior of a plastisol or organosol under low shear. This viscosity relates to the conditions encountered in pouring, casting, molding, and dipping processes.
SCOPE
1.1 This test method covers the measurement of plastisol and organosol viscosity at low shear rates.
1.2 Apparent viscosity at high shear rates is covered in Test Method D1823.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.4 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.  
Note 1—This test method resembles ISO 3219-1977 in title only. The content is significantly different.

General Information

• Status: Historical
• Publication Date: 14-Dec-2010
• ICS: 83.080.01 - Plastics in general
• Technical Committee: D20 - Plastics
• Drafting Committee: D20.15 - Thermoplastic Materials

Relations

• Replaces: ASTM D1824-95(2002) - Standard Test Method for Apparent Viscosity of Plastisols and Organosols at Low Shear Rates
• Effective Date: 15-Dec-2010
• Replaced By: ASTM D1824-16 - Standard Test Method for Apparent Viscosity of Plastisols and Organosols at Low Shear Rates
• Effective Date: 01-Apr-2016
• Referred By: ASTM D1755-21 - Standard Specification for Poly(Vinyl Chloride) Resins
• Effective Date: 15-Dec-2010
• Referred By: ASTM D3794-22 - Standard Guide for Testing Coil Coatings
• Effective Date: 15-Dec-2010
• Referred By: ASTM D1823-16 - Standard Test Method for Apparent Viscosity of Plastisols and Organosols at High Shear Rates by Extrusion Viscometer
• Effective Date: 15-Dec-2010
• Referred By: ASTM D3468/D3468M-99(2020) - Standard Specification for Liquid-Applied Neoprene and Chlorosulfonated Polyethylene Used in Roofing and Waterproofing
• Effective Date: 15-Dec-2010
• Referred By: ASTM F942-18(2023)e1 - Standard Guide for Selection of Test Methods for Interlayer Materials for Aerospace Transparent Enclosures
• Effective Date: 15-Dec-2010
• Referred By: ASTM F3337-19 - Standard Guide for Taking Property and Behavior Measurements on Weathered Fractions of Oil
• Effective Date: 15-Dec-2010

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: D1824 − 95(Reapproved 2010)
Standard Test Method for
Apparent Viscosity of Plastisols and Organosols at Low
Shear Rates
This standard is issued under the fixed designation D1824; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 3. Summary of Test Method
1.1 This test method covers the measurement of plastisol 3.1 Thesampleisconditionedtothepropertemperatureand
and organosol viscosity at low shear rates. its viscosity is determined.
1.2 Apparent viscosity at high shear rates is covered inTest
4. Significance and Use
Method D1823.
4.1 The suitability of a dispersion resin for any given
1.3 The values stated in SI units are to be regarded as the
application process is dependent upon its viscosity character-
standard. The values given in parentheses are for information
istics.
only.
4.2 The viscosity defines the flow behavior of a plastisol or
1.4 This standard does not purport to address all of the
organosol under low shear. This viscosity relates to the
safety concerns, if any, associated with its use. It is the
conditions encountered in pouring, casting, molding, and
responsibility of the user of this standard to establish appro-
dipping processes.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
5. Apparatus
NOTE 1—This test method resembles ISO 3219-1977 in title only. The
5.1 Viscometer.
content is significantly different.
5.2 Sample Containers, Tin Cans, or Glass Jars, 1-pt
2. Referenced Documents
(500-mL) capacity. Minimum dimensions of containers should
be80-mm(3.15-in.)insidediameterby80mm(3.15in.)deep.
2.1 ASTM Standards:
D1755Specification for Poly(Vinyl Chloride) Resins
5.3 Thermometer, ASTM Solvents Distillation Thermom-
D1823Test Method forApparentViscosity of Plastisols and
eter having a range from−2 to+52°C (28 to 126°F) and
Organosols at High Shear Rates by Extrusion Viscometer
conforming to the requirements for Thermometer 37C as
E1Specification for ASTM Liquid-in-Glass Thermometers
prescribed in Specification E1.
E691Practice for Conducting an Interlaboratory Study to
5.4 Timer.
Determine the Precision of a Test Method
2.2 ISO Standard:
6. Conditioning
ISO 3219-1977:Polymers in the Liquid, Emulsified, or
6.1 Maintaintheplastisolororganosolsamplesat23 61°C
Dispersed State—Determination of Viscosity With a Ro-
3 (73 6 2°F) and 50 6 5% relative humidity at all times after
tational Viscometer Working at a Defined Shear Rate
mixing and throughout the period of viscosity determinations.
7. Procedure
ThistestmethodisunderthejurisdictionofASTMCommitteeD20onPlastics
and is the direct responsibility of Subcommittee D20.15 on Thermoplastic Materi- 7.1 Select a spindle that will read in the middle or upper
als.
portion of the viscometer dial at the highest rotational speed to
Current edition approved Dec. 15, 2010. Published March 2011. Originally
be used. Insert the spindle into the sample at approximately a
approved in 1961. Last previous edition approved in 2002 as D1824-95(2002).
45°angle.Withdrawthespindleandattachittotheviscometer.
DOI:10.1520/D1824-95R10.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Takingcarenottoentrapanairbubble,lowertheviscometerto
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
3 4
Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St., Brookfield model RVF or LVF, or equivalent has been found satisfactory for
4th Floor, New York, NY 10036, http://www.ansi.org. this purpose. Brookfield Engnrg. Labs, Inc., Stoughton, MA 02072.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D1824 − 95 (2010)
TABLE 2 Precision of Viscosity Data at 20 RPM
immerse the spindle near the edge of the sample. Move the
sample so as to center the spindle. Adjust its depth to the Average Values expressed as
Viscosity % of the Average
immersion mark.
A B C D
Resin (Poises) ν ν r R
r R
7.2 Start the viscometer at its lowest speed.Allow it to run
V 24.72 8.5 12.1 23.8 34.0
IV 38.36 3.9 12.8 10.9 35.8
2 min. Record the scale reading during the next rotation.
II 82.24 6.3 26.8 17.6 74.9
Without stopping the viscometer, switch to the next higher
I 92.52 6.9 14.5 19.3 40.6
speed. Record the scale readings after 2 min at each speed in
III 102.40 11.8 22.6 33.0 63.2
VI 226.05 11.6 27.1 32.5 75.9
order from the lowest to the highest speeds.
A
ν is the within-laboratory coefficient of variation of the average.
r
7.3 Record the sample temperature at the conclusion of
B
ν is the between-laboratories coefficient of variation of the average.
R
C
viscosity readings.
r is the within-laboratory Repeatabi
...